CN102014831A - Disposable absorptive article - Google Patents

Disposable absorptive article Download PDF

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Publication number
CN102014831A
CN102014831A CN2009801151218A CN200980115121A CN102014831A CN 102014831 A CN102014831 A CN 102014831A CN 2009801151218 A CN2009801151218 A CN 2009801151218A CN 200980115121 A CN200980115121 A CN 200980115121A CN 102014831 A CN102014831 A CN 102014831A
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CN
China
Prior art keywords
variations
temperature material
temperature
absorber
heat bonding
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Granted
Application number
CN2009801151218A
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Chinese (zh)
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CN102014831B (en
Inventor
井畑健
浅野丽
堀江结城
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Daio Paper Corp
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Daio Paper Corp
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Priority claimed from JP2008119317A external-priority patent/JP5502287B2/en
Priority claimed from JP2008119316A external-priority patent/JP5305725B2/en
Priority claimed from JP2008143573A external-priority patent/JP4579313B2/en
Priority claimed from JP2008250839A external-priority patent/JP4528853B2/en
Application filed by Daio Paper Corp filed Critical Daio Paper Corp
Publication of CN102014831A publication Critical patent/CN102014831A/en
Application granted granted Critical
Publication of CN102014831B publication Critical patent/CN102014831B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/42—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators with wetness indicator or alarm

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

A disposable absorptive article having high temperature change efficiency and capable of more quickly achieving a greater temperature change. An absorbing body (56) has formed therein a pocket (57) penetrating in the front surface/rear surface direction through the absorbing body (56), extending from the center (CL) in the front-rear direction of an article to the front side of the article, and including that portion of the article which corresponds to 20% of the overall length (L5) of the article. A temperature changing substance (40) for cooling or heating urine by making contact with the urine is mounted in the pocket (57).

Description

Disposable absorbent article
Technical field
The present invention relates to a kind of disposable absorbent articles such as the disposable diaper of so-called toilet training (toilet-training), disposable absorption liner that are used for.
Background technology
In the past, the disposable diaper of using as toilet training, in order to make the wearer produce the consciousness of urinating, usually after making urine touch skin, work hard because of the moist aspect such as sense of discomfort of strengthening, but this may cause skin to soak and macule, can also make the wearer that the technology of the consciousness of urinating is arranged when making urine away from skin so developing.
This representational technology is, utilized the material (for example with reference to patent documentation 1,2) that brings variations in temperature as Sorbitol etc. by contacting with urine to urine.The technology that patent documentation 1 is put down in writing proposes, and will include the Sorbitol equitemperature and change the component configuration of material in a side of the close health of absorber element.In addition, the technology that patent documentation 2 is put down in writing proposes, and will clamping have the Sorbitol equitemperature to change the arrangements of components of material on absorbent core between impregnability layer and non-impregnability layer.
Patent documentation 1: No. 3922722 communiques of Japan's special permission
Patent documentation 2: No. 3830901 communiques of Japan's special permission
But existing problem is, although the use amount of variations in temperature material is bigger in the conventional disposable diaper, its variations in temperature is all insufficient aspect intensity of variation and pace of change.Therefore, when wearing conventional disposable diaper, even the wearer has the consciousness of urinating, but the ratio of informing is lower, for example, even current commercially available adding the toilet training disposable diaper of cooling material, it informs that ratio is higher, but also only is about 40%.
Summary of the invention
Therefore, major subjects of the present invention is, provides to make variations in temperature efficient more excellent and realize the disposable absorbent article of faster and bigger variations in temperature.
Present inventors further investigate the problems referred to above, and the result has obtained following opinion.Promptly, when in making absorber, only containing the variations in temperature material, the urine that does not contact with the variations in temperature material that remains in the absorber has not only hindered variations in temperature, and, even by the variations in temperature material variations in temperature effect has taken place in the absorber, its variations in temperature also can be obstructed under the heat insulating function that absorber had originally.In addition, for by variations in temperature material occurrence temperature variation efficiently effect, at first sight, should be preferably at the position configuration variations in temperature material of urinating, but the position of urinating is the most continuously for the position of urinating, therefore, the temperature of the urine of supplying with behind the variations in temperature meeting quilt that the urine of being supplied with by elder generation produces weakens or offsets.And these phenomenons are very big to the variations in temperature Effect on Performance.The present invention promptly makes according to above-mentioned opinion.
The invention that＜technical scheme 1 is put down in writing 〉
A kind of disposable absorbent article, this disposable absorbent article has: the front part of extending from article fore-and-aft direction mediad front side; With the rear section that extends from article fore-and-aft direction mediad rear side;
Also have the absorption portion that absorber is folded between liquid permeability surface patch and the back side lateral plate and forms, it is characterized in that,
Described absorber extends 30%～48% of article total length from article fore-and-aft direction mediad front side,
In described absorber, form marsupial portion, the thickness of described bag portion is 0%～50% of its peripheral region thickness, described bag portion comprises 20% the part that is equivalent to the article total length from article fore-and-aft direction central authorities to the front side, and the distance between the leading section of described bag portion and the leading section of described absorber is 5%～30% of an article total length
In described bag portion, dispose and be used for by contact the variations in temperature material that urine is cooled off or heats with urine.
(action effect)
In the present invention, make when urinating to see through surface patch and to be absorbed in urine in the absorber after fully moving to the front side, contact with variations in temperature material in the bag portion because of diffusion.Thus, make occurrence temperature variation in bag portion, this variations in temperature is not passed to wearer's veutro part via absorber.Like this, when forming urine after abundant diffusion is moved when helping the structure of variations in temperature, can avoid taking place as the existing variations in temperature that produces by the urine of supplying with earlier like that by after the temperature reduction of the urine supplied with or the phenomenon of offsetting, thereby take place and variations in temperature that the use amount of variations in temperature material adapts.And, because its sufficient variations in temperature betides a bag portion (table back of the body breakthrough part), so can transmit efficiently to health.Therefore, according to the present invention, can make the excellent disposable absorbent article that also can realize faster and bigger variations in temperature of variations in temperature efficient.
The invention that＜technical scheme 2 is put down in writing 〉
According to technical scheme 1 described disposable absorbent article, wherein, described variations in temperature material causes the endothermic reaction in the urine so that urine cooling by being dissolved in, and the dissolubility of described variations in temperature material in the 100ml water of 20 ℃ of temperature be more than the 30g,
Described variations in temperature material in the described bag portion quantitatively be 500～1000g/m 2,
The gross area of described bag portion is 2500～8000mm 2,
The thermal change total amount that described variations in temperature material can produce in described absorber is more than the 20cal,
The thermal change of unit are with part of described variations in temperature material is 1cal/cm 2More than.
(action effect)
In the bag portion of such size,, can make the action effect of the invention described above more obvious by using the variations in temperature material of such performance and quantity.Particularly passing through the variations in temperature substance dissolves in urine and under the situation of the material that occurrence temperature changes, following problem has obviously appearred, promptly, when the urine amount that is supplied to bag portion just makes the variations in temperature material of bag portion almost all dissolve, the urine that temperature has changed is by anything maintenance, thereby can spread towards periphery.But, because the urine occurrence temperature that helps after abundant diffusion is moved that is configured with of absorbent commodity of the present invention changes, thus the not dissolving as yet of the part of the variations in temperature material of bag portion, thus can keep the urine of occurrence temperature variation.And the urine that remains in the variations in temperature material is also carrying out the dissolving of variations in temperature material thereafter gradually, so variations in temperature can pass to the wearer more reliably.
The invention that＜technical scheme 3 is put down in writing 〉
According to technical scheme 2 described disposable absorbent articles, wherein, described absorber contains 120～200g/m 2Hydrophilic fibre and 170～220g/m 2The superabsorbent polymer particle, the content of described superabsorbent polymer is higher than the content of described hydrophilic fibre.
(action effect)
Because the absorbtivity of bag portion self is few or do not absorb fully, therefore when supplying with the urine amount for a long time, in the urine of occurrence temperature variation, that be not held in bag portion that part of meeting is spread towards periphery, causes variations in temperature to become insufficient to wearer's transmission.But, when the use amount of hydrophilic fibre is less than superabsorbent polymer, after superabsorbent polymer absorption moisture is expanded to gel, reduced and absorbed intravital liquid diffusibility, therefore, at least absorber near the position of urinating mouthful and at the boundary vicinity that has a common boundary with bag portion, the urine that is supplied to bag portion and variations in temperature taken place does not turn back to yet indiffusion in the absorber.
The invention that＜technical scheme 4 is put down in writing 〉
According to technical scheme 3 described disposable absorbent articles, wherein, emboliform variations in temperature material is used as described variations in temperature material and places in the described bag portion.
The invention that＜technical scheme 5 is put down in writing 〉
According to technical scheme 4 described disposable absorbent articles, wherein, compare with other zones of described absorber, near the leading section of the described at least bag portion around the described bag portion, dispose superabsorbent polymer the most to high-density.
(action effect)
Around bag portion, when near the leading section of the bag portion of aiming at wearer's abdominal part at least, disposing superabsorbent polymer to high-density, the urine that variations in temperature has taken place that described superabsorbent polymer absorbs and keeps spreading, thereby can rest on wearer's abdominal part periphery, therefore comparatively preferred.
The invention that＜technical scheme 6 is put down in writing 〉
According to technical scheme 5 described disposable absorbent articles, wherein, be set to described bag portion overlappingly by at least a portion that contacts the drainage indicator that change color takes place with moisture, and described variations in temperature material has hygroscopicity.
(action effect)
Toilet training with in the diaper also mostly and with draining indicator, transmitting the information of having urinated, but be set to the bag portion of absorber when overlapping, with a spot of urine also variable color well, so comparatively preferred when draining indicator to the wearer.At this, when the variations in temperature material has hygroscopicity, can be because of not contacting with airborne moisture (dampness) in the keeping, thereby perhaps because of contact drainage indicator generation variable color under not excretory situation with wearer's antiperspirant or from the moisture that health gives out in using.
The invention that＜technical scheme 7 is put down in writing 〉
According to technical scheme 5 described disposable absorbent articles, wherein, described bag portion is incorporated in from article fore-and-aft direction central authorities to front side and is equivalent in 0%～40% the scope of article total length, and fore-and-aft direction length is 10%～20% of article total length, and width is 25%～60% of an absorber overall with.
(action effect)
When such formation, fully the bag portion of size roughly is positioned at wearer's abdominal part or hypogastric region.And wearer's abdominal part or hypogastric region relatively bloat at body surface, thereby are easy near the variations in temperature position in the bag portion.Therefore, the variations in temperature in the bag portion passes to the wearer easily.
The invention that＜technical scheme 8 is put down in writing 〉
According to technical scheme 5 described disposable absorbent articles, wherein, described absorber extends 30%～48% of article total length from article fore-and-aft direction mediad front side, and to 25%～45% of rear side extension product total length,
25%～45% of article total length is extended by described bag portion from article fore-and-aft direction mediad front side, and to 20%～40% of rear side extension product total length, and extend along the width of article central authorities, and the width of described bag portion is 25%～60% of an absorber overall with.
(action effect)
Like this, when the bag portion that will accommodate the variations in temperature material is arranged on the position that also comprises the position of urinating, no matter be less or under many situations, sufficient variations in temperature can both take place in the urine amount, therefore comparatively preferred.
The invention that＜technical scheme 9 is put down in writing 〉
According to technical scheme 5 described disposable absorbent articles, wherein, described absorber extends 30%～48% of article total length from article fore-and-aft direction mediad front side, and to 25%～45% of rear side extension product total length,
Described bag portion forms ring-type in the mode of the middle section that surrounds described absorber, the live width of described bag portion is 5%～10% of an article total length, described middle section extends 15%～35% of article total length from article fore-and-aft direction mediad front side, and to 15%～35% of rear side extension product total length, and along the central extension of the width of article, and the width of described middle section is 40%～75% of an absorber overall with.
(action effect)
The urine that is absorbed in the absorber spreads to entire circumference from draining approximate equality ground, position, therefore, when the bag portion that accommodates the variations in temperature material is set to ring-type in the mode of surrounding described middle section, variations in temperature material in more urine and the bag portion is come in contact, even perhaps Niao dispersal direction is offset, also can be reliably with bag portion in the variations in temperature material come in contact, so comparatively preferred.
The invention that＜technical scheme 10 is put down in writing 〉
According to technical scheme 3 described disposable absorbent articles, wherein, described variations in temperature material is configured to, and do not contain or contain on a small quantity the particle shape composition that is at least the state that can move freely at in-plane, and the major part of described variations in temperature material is not moved.
(action effect)
As prior art, when the state on-fixed ground with powder body shape contains the variations in temperature material, in the process of circulation or use of product, the variations in temperature material moves from predetermined position, the urine deficiency and the variations in temperature that change material owing to supplying temperature can not pass to reasons such as health fully, and variations in temperature might be insufficient.To this, as mentioned above, in absorbent commodity inside the variations in temperature material is configured to not contain or contains solid, shaped on a small quantity and the particle shape part of the state that can move freely, most variations in temperature material can not moved.Therefore, desired variations in temperature can take place.
The invention that＜technical scheme 11 is put down in writing 〉
According to technical scheme 10 described disposable absorbent articles, wherein, packaged of whole described absorber is wrapped in, and described variations in temperature material is thermally bonded at least one side in described absorber and the described package panel.
(action effect)
The variations in temperature material is by bringing variations in temperature with contacting of moisture.Therefore, in order to improve the contacting efficiency with moisture, remain on the position of more close skin for the moisture of occurrence temperature variation, and for the variations in temperature material is not directly contacted with skin, the heat bonding position of variations in temperature material is preferably the sheet material that is disposed between surface patch and the package panel, perhaps is package panel.
The invention that＜technical scheme 12 is put down in writing 〉
According to technical scheme 11 described disposable absorbent articles, wherein, described variations in temperature material is got up by heat bonding, and the variations in temperature material of this heat bonding is broken into pieces.
(action effect)
By like this variations in temperature material being thermally bonded in the inside of absorbent commodity, the variations in temperature material can being held in a predetermined position reliably and being difficult to move.Therefore, desired variations in temperature can take place.In addition, by the variations in temperature material of heat bonding is broken into pieces, can reduce the hardization that the heat bonding by the variations in temperature material causes.This embodiment comprises that also the variations in temperature material of a part is got off from heat bonding object element falling by pulverizing.In addition, the implication of " heat bonding " speech is meant that the variations in temperature material is attached to object (absorber) with molten condition and upward solidifies afterwards, and firming body is fixed on the state on the object.
The invention that＜technical scheme 13 is put down in writing 〉
According to technical scheme 10 described disposable absorbent articles, wherein, described variations in temperature material is held between the face side parts and rear side parts that lay respectively at its face side and rear side, and the one portion of hot is adhered on described face side parts and the rear side parts, and its remainder not with described face side parts and rear side parts heat bonding
The heat bonding of described variations in temperature material partly forms the frame shape, and the variations in temperature material of non-heat bonding is enclosed in the part of partly being surrounded by its frame shape heat bonding.
(action effect)
In the prior art, state and on-fixed ground with powder body shape contain the variations in temperature material, so the variations in temperature material moves from predetermined position in the process of circulation of product or in using, because supplying temperature changes the water deficient of material, variations in temperature can not pass to health etc. fully, thereby variations in temperature might be insufficient.This problem can solve by heat bonding variations in temperature material on the suitable parts of absorbent commodity inside as described above, but heat bonding that might the variations in temperature material is partly understood hardening, thus the flexibility of infringement absorbent commodity.
To this, as mentioned above, the frame shape heat bonding part that is thermally bonded on face side parts and the rear side parts is surrounded by face side parts and rear side parts on table back of the body direction, and partly surrounded by frame shape heat bonding around it, at this moment, even be disposed at its inboard variations in temperature material, also can only in the scope of frame shape heat bonding part, move not by heat bonding.Therefore, can suppress moving of variations in temperature material, and desired variations in temperature takes place.And the heat bonding of variations in temperature material partly is the frame shape, thereby than integral body is much soft with the heat bonding part that planar heat bonding gets up, and also can suppress the hardization that the heat bonding because of the variations in temperature material causes.
In addition, the implication of " heat bonding " speech is meant that the variations in temperature material is attached on the object with molten condition and solidifies afterwards, and firming body is fixed on the state on the object.In addition, " frame shape " is meant, except the heat bonding part of variations in temperature material is continuous fully, is also contained in the embodiment that has partial discontinuous part in the mobile scope that is suppressed of variations in temperature material.
The invention that＜technical scheme 14 is put down in writing 〉
According to technical scheme 13 described disposable absorbent articles, wherein, a plurality of described frame shape heat bondings are partly lined up and are formed the clathrate pattern, and this clathrate pattern comprises the heat bonding portion of described variations in temperature material and the hot sticky wiring of the some wire that non-heat bonding portion alternately is arranged in, and is discontinuous in each crossover location at least one hot sticky wiring.
(action effect)
By the heat bonding part of variations in temperature material is set by such pattern, can makes the heat bonding of variations in temperature material partly become discontinuous shape, thereby can further reduce heat bonding part hardization.
The invention that＜technical scheme 15 is put down in writing 〉
According to technical scheme 13 described disposable absorbent articles, wherein, as described variations in temperature material, contain the high relatively high melting temperature of fusing point and change the relative low low melting point temperature variation of material material with fusing point, described frame shape heat bonding part hot stickyly fetches formation by what described low melting point temperature changed material, and enclose described high melting temperature in the part of partly surrounding and change material, with variations in temperature material as described non-heat bonding by described frame shape heat bonding.
(action effect)
Use the different variations in temperature material of fusing point, change material by low melting point temperature and form frame shape heat bonding part, dispose high melting temperature in the inboard of frame shape heat bonding part and change material, form frame shape heat bonding part thus easily during fabrication.
The invention that＜technical scheme 16 is put down in writing 〉
According to technical scheme 3 described disposable absorbent articles, wherein, will form fibrous variations in temperature material and place in the described bag portion as described variations in temperature material.
(action effect)
Like this, the variations in temperature material becomes fibrous placing in bag portion, thereby the variations in temperature material is held in a predetermined position reliably, and it is not moved.Therefore, desired variations in temperature can take place.In addition, the variations in temperature material is fibrous, and this layer is comparatively soft, also hardly hardization can take place even therefore have the part of variations in temperature material.
The invention that＜technical scheme 17 is put down in writing 〉
According to technical scheme 3 described disposable absorbent articles, wherein, the shaping piece that will obtain the compression molding of emboliform variations in temperature material places in the described bag portion as described variations in temperature material.
(action effect)
In the prior art, under the situation of the variations in temperature material that has used powder body shape, state and on-fixed ground with powder body shape contain the variations in temperature material, therefore in the process of circulation or use of product, the variations in temperature material moves via gap between parts or interfibrous gap from predetermined position, because supplying temperature changes the water deficient of material, variations in temperature can not fully pass to health etc., thereby variations in temperature might be insufficient.As the method that addresses this problem, consideration is adhered to the variations in temperature material in the suitable parts fusion of absorbent commodity inside, but in this case, might cause descending because of the long-pending decline of variations in temperature material surface, and make the variations in temperature decrease in efficiency with the contacting efficiency of moisture.
In contrast, compare with the material that is in emboliform state, the shaping piece that is obtained by aforesaid particle shape variations in temperature material compression molding is difficult to move via gap between parts or interfibrous gap.Therefore, built-in by the shaping piece of such variations in temperature material is carried out with the state between face side parts and the rear side parts of being held on, can suppress moving of variations in temperature material.In addition, because emboliform compression molding sheet is a porous structure, to compare so only become the melting and solidification thing with the variations in temperature material particle, its surface area also promptly becomes especially big with the contact area of moisture, thereby variations in temperature efficient can descend hardly, even or descend that also amplitude is very little.Therefore, the variations in temperature material is difficult to move, and can fully guarantee the contact area of variations in temperature material and moisture simultaneously, thereby desired variations in temperature can take place.
The invention that＜technical scheme 18 is put down in writing 〉
According to technical scheme 17 described disposable absorbent articles, wherein, described shaping piece is by being that 200～600 μ m and bulk density are 0.50～0.70g/cm with mean diameter 3The compression molding of sugar alcohol particle be that bulk density is 0.80～1.10g/cm 3And the porous matter sheet that obtains.
(action effect)
Using under the situation of cooling material as the variations in temperature material, viewpoint from safety, stability (fusing point etc.) and acquisition easiness, sugar alcohol is comparatively preferred, in this case, the average particle size before the compression molding and the bulk density of shaping piece are in above-mentioned scope, and be then preferred especially.
The invention that＜technical scheme 19 is put down in writing 〉
According to technical scheme 18 described disposable absorbent articles, wherein, described shaping piece is that thickness is that 0.5～2.0mm, area are 50～1000mm 2Flat piece, and some or a large amount of described flat piece are present in the described bag portion.
(action effect)
Improving under the quantitative situation of variations in temperature material like this, and as have now, contain particle sometimes with emboliform state and coincide with under the situation on the thickness direction, take place particle migration easily.Therefore, the variations in temperature material is set as shaping piece and is suitable for such situation.In addition, under quantitatively many situations of variations in temperature material, shaping piece is blocked up or area is excessive, and this will bring foreign body sensation to user, thereby the some or a large amount of flat piece in the scope of preferred above-mentioned thickness and area are built in the article.
The invention effect
As previously discussed, according to the present invention, advantage is can bring variations in temperature efficient excellence, can produce the disposable absorbent article of quicker and bigger variations in temperature etc.
Description of drawings
Fig. 1 is vertical view inner surface, the diaper deployed condition of expression Breeches type disposable diaper.
Fig. 2 is vertical view outer surface, the diaper deployed condition of expression Breeches type disposable diaper.
Fig. 3 is the cutaway view of the 6-6 line in Fig. 1.
Fig. 4 is the cutaway view of the 7-7 line in Fig. 1.
Fig. 5 is the cutaway view of the 8-8 line in Fig. 1.
Fig. 6 is major part and vertical view size, the diaper deployed condition thereof of only representing Breeches type disposable diaper.
Fig. 7 is a cutaway view of only representing the major part and the size thereof of Breeches type disposable diaper.
Fig. 8 is the front view of Product Status.
Fig. 9 is the rearview of Product Status.
Figure 10 is the vertical view of the example of another absorber.
Figure 11 is again the vertical view of the example of an absorber.
Figure 12 is the curve chart of experimental result.
Figure 13 is the cutaway view that is equivalent to the comparative example of part shown in Figure 3.
Figure 14 is the major part vertical view of other embodiments.
Figure 15 is the upward view of the major part of other embodiments.
Figure 16 is the skeleton diagram of expression heating unit.
Figure 17 is the skeleton diagram of expression heating unit.
Figure 18 is the skeleton diagram of expression heating unit.
Figure 19 is the skeleton diagram of expression heating unit.
Figure 20 is the major part cutaway view of other embodiments.
Figure 21 is the major part upward view of other embodiments.
Figure 22 is the major part vertical view of other embodiments.
Figure 23 is the major part cutaway view of other embodiments.
Figure 24 is the major part vertical view of various manufacturing embodiments.
Figure 25 is other major part vertical views of making embodiment.
Figure 26 is the major part cutaway view of other embodiments.
Figure 27 is the major part cutaway view of other embodiments.
(a) of Figure 28 is manufacturing process's skeleton diagram, and (b) of Figure 28 is the shaping piece approximate vertical view.
Symbol description
100: waistline portion; 11: non-liquid permeability sheet; 12F: the outer load of veutro; 12B: the outer load of dorsal part; 200: interior dress body; 30: surface patch; 40: the variations in temperature material; 50: absorber element; 52: fiber; 54: the superabsorbent polymer particle; 56: absorber; 57: bag portion; 58: package panel; 60: sidepiece stops the limit; 62: the barrier sheet; 70: the dorsal part stretchable sheet.
The specific embodiment
Below, enumerate Breeches type disposable diaper (toilet training medicated underpants) example one embodiment of the present invention is described, but the present invention ought to be applicable to the disposable diaper of belt or the absorbent commodity of insert type etc.
Fig. 1～Fig. 9 represents an example of Breeches type disposable diaper.In each figure, the implication of " fore-and-aft direction " is meant the direction that connects veutro (front side) and dorsal part (rear side); The implication of " width " is meant the direction (left and right directions) with the fore-and-aft direction orthogonal; The implication of " above-below direction (vertically) " is meant the state that wears at diaper, promptly in the mode that the predecessor both sides of diaper and body both sides, back are superimposed diaper is placed between crotch portion to overlap is under two states of rolling over, with the direction of waistline direction orthogonal, be meant the direction that connects portion's side between waist peristome WO side and crotch in other words.
This Breeches type disposable diaper constitutes, the outer load 12B of dorsal part that it has the outer load 12F of veutro of the veutro in the waistline that coats the wearer and coats dorsal part, by heated sealant or ultrasonic wave coating etc., make the width both side edges of the outer load 12F of veutro and the width both side edges of the outer load 12B of dorsal part spread all over whole above-below direction and deposited being joined together, to form the waistline portion 100 of tubular.Label 12A represents each melt-coating part, and the group of this melt-coating part 12A constitutes side seals.Embodiment is such as shown, load 12B extends to than melt-coating part 12A more by under the situation at downside place outside dorsal part, in comprising the above-below direction scope of this part, implement processing such as incorporate heated sealant, and can be provided with extension melt-coating part 12E by dorsal part extension 14.Extend melt-coating part 12E by being provided with, can prevent the retraction of the second elongate elastic telescopic parts 16 of aftermentioned dorsal part extension 14.In this case, consider the tearability of side of body portion, melt-coating part 12A is made of the set of little melt-coating part usually, is formed on the low joint pattern of deposited area ratio among the melt-coating part 12A; But, therefore also can be higher than the deposited area ratio of melt-coating part 12A, thereby the deposited reliably second elongate elastic telescopic parts 16 of fixing by the deposited area ratio that makes deposited pattern owing in extending melt-coating part 12E, do not need to consider tearability.In addition, melt-coating part 12E is deposited along the edge portion curve of buttocks cap 14C with extending, and also can prevent the retraction of the second elongate elastic telescopic parts 16 of buttocks cap 14C.
In addition, utilize hot-melt adhesive etc. that the leading section of interior dress body 200 is attached on the width central part inner surface of the outer load 12F of veutro in the waistline portion 100, and utilize hot-melt adhesive etc. that the rearward end of interior dress body 200 is attached on the width central part inner surface of the outer load 12B of dorsal part, outer load 12F of veutro and the outer load 12B side between crotch of dorsal part are separated and discontinuous.This separating distance Y can be located at about 150～250mm.Though do not illustrate, also can adopt to make the successive embodiment of outer load 12F of veutro and the outer load 12B portion between crotch of dorsal part, that is to say the embodiment that is coating the part from the veutro to the dorsal part by incorporate outer load continuously.
Also can distinguish according to Fig. 7 and Fig. 8, the upper opening of waistline portion 100 becomes can be by the waist peristome WO of wearer's waist, in the width both sides of interior dress body 200, the part of being surrounded respectively by waistline portion 100 lower edges and interior dress body 200 lateral margins becomes the thigh peristome LO that can pass through thigh.In that each melt-coating part 12A is peeled off under the unfolded state, form the device shape of using a sand filter for marking the hours as shown in Figure 1.In dress body 200 be with coat from dorsal part pass that portion between crotch extends to the mode of the part of veutro again, be used to accept Excreta and absorb the part that keeps liquid component, waistline portion 100 is used for interior dress body 200 is bearing in part on the wearer.
(outer load)
Also as Fig. 4 and shown in Figure 5, the outer load 12B of outer load 12F of veutro and dorsal part constitutes by two flaky material 12,12 is glued together, be positioned at the edge that inboard inboard flaky material 12 only extends to waist peristome WO, but the outside flaky material 12 that is positioned at the outside involves in the waist lateral edges of inboard flaky material 12 and turns back to its inboard, this part 12r that turns back extends in the mode on the waist side end of dress body 200 in covering, and is fixed on the opposed faces with hot-melt adhesive etc.As flaky material 12,, then be not particularly limited, but preferably use non-woven fabrics as long as can be joined together by deposited.Do not limit the raw fibre of non-woven fabrics especially.For example, olefin-based such as polyethylene or polypropylene, polyester system, synthetic fibers such as polyamide-based can example be shown, regenerated fiber such as viscose rayon or CUP, natural fibers such as silk floss etc. perhaps use the two or more fibers in above-mentioned and composite fibre of constituting, composite fibre etc.And then non-woven fabrics also can be made by any processing method.As processing method, can known method be shown example, water acupuncture manipulation (spunlace), spun-bond process (spunbond), hot rolling method (thermalbond), meltblown (meltblown), needle point method (needle-punched), hot blast method (air through) and the sticking method (pointbond) of point etc. are for example arranged.Under the situation of having used non-woven fabrics, preferably it quantitatively is 10～30g/m 2About.
And in order to improve the waistline fit, load 12B outside load 12F and the dorsal part outside veutro is provided with the elongate elastic telescopic parts 15～19 of rubber covered wire etc. by predetermined percentage elongation between two flaky materials 12,12.Be meant as elongate elastic telescopic parts 15～18,19T, 19U, promptly can use synthetic rubber, also can use natural rubber.Two flaky materials 12,12 of each outer load 12F, 12B bonding and be held on the fixing of elongate elastic telescopic parts 15～19 between the above-mentioned material 12,12 can adopt that hot melt adhesive, heated sealant or ultrasound wave are bonding to carry out.Outside firmly fixing, when whole of load 12F, 12B, can damage the feel of this sheet, thus not preferred.Be preferably these unit constructions, make elongate elastic telescopic parts 15～19 bonding securely, and part in addition is glued together not bonding or weakly.
Say that in more detail the outer load 12B of dorsal part has: the dorsal part main part 13 that has occupied the identical above-below direction scope of the side seals that constitutes with group by melt-coating part 12A; With the dorsal part extension 14 that extends to the downside of this dorsal part main part 13.Dorsal part extension 14 has: with interior dress body 200 eclipsed width central part 14M; With the buttocks cap 14C that extends to this width central part 14M both sides.
The shape of dorsal part extension 14 can suitably be determined, in illustrated example, extend with the downside of the width identical with dorsal part main part 13 to dorsal part main part 13 upper end of dorsal part extension 14, and the downside of this dorsal part extension 14 is along with near side between crotch and the stenosis gradually of its width.Also can save part with dorsal part main part 13 same widths.If when constituting like this, the edge 14e in the width of the buttocks cap 14C outside forms along with such linearity or the curve-like of dress body 200 sides in getting close to more the closer to side between crotch, and becomes the shape that is easy to coat buttocks.
The size of dorsal part extension 14 can suitably be determined, as shown in Figure 6, when the width length 14x of buttocks cap 14C (the width maximum separation distance between the edge 14e in the width outside of buttocks cap 14C and the lateral margin of interior dress body 200) is 80～160mm, and when the length 14y (development length) of the above-below direction of buttocks cap 14C is 30～80mm, then more preferably.In addition, if will be made as S by the determined tetragonal area in the wideest position of width and the wideest position of above-below direction of dorsal part extension 14, then ought make the area of dorsal part extension 14 be equivalent to about 20%～80% of S, particularly about 40%～60% o'clock, the outward appearance of buttocks and wearing feeling are comparatively excellent, and this is preferred.
Dorsal part main part 13 can be from the conceptive lower portion U that is divided into upper end (waist portion) W and leans on downside than the upper end on above-below direction, its scope is different with the size of product, usually the above-below direction length of upper end W can be made as 15～80mm, and the above-below direction length of lower portion U can be made as 35～220mm.
Between the lateral surface of the medial surface of the inboard flaky material 12 in the W of the upper end of dorsal part main part 13 (waist portion) and the part 12r that turns back of outside flaky material, a plurality of dorsal part waist portion elastic telescopic parts 17 to be spreading all over the successive mode of whole width devices spaced apart on above-below direction, and to fix along the state that width stretches by predetermined percentage elongation.In addition, about in the lower portion U adjacent areas with dorsal part main part 13 one or more of being equipped in a plurality of dorsal part waist portion elastic telescopic parts 17, it can be overlapping with interior dress body 200, also can be separately positioned on except that with interior dress body 200 eclipsed width central parts its width both sides.As these dorsal part waist elastic telescopic parts 17, preferably be about 155～1880dtex, be in particular about 470～1240dtex and (refer in elastomeric occasion with fineness degree.And in the occasion of natural rubber, sectional area is 0.05～1.5mm 2About, be in particular 0.1～1.0mm 2About) rubber covered wire with about 3～22 of the arranged spaced of 4～12mm, and respectively with percentage elongation about 150%～400%, particularly about 220%～320% fixing.In addition, dorsal part waist portion elastic telescopic parts 17 do not need all have identical fineness degree and percentage elongation, can for example make the top of dorsal part waist portion different with the fineness degree and the percentage elongation of the elastic telescopic parts of bottom yet.
In addition, between the lateral surface of the inboard flaky material 12 in the lower portion U of dorsal part main part 13 and the medial surface of outside flaky material 12, except with interior dress body 200 eclipsed width central parts, each position of side and width both sides thereon, with spread all over the successive mode of whole width with a plurality of first elongate elastic telescopic parts 15 in the above-below direction devices spaced apart, and fix with the state of upholding along width by predetermined percentage elongation.
As the first elongate elastic telescopic parts 15, being preferably fineness degree is about 155～1880dtex, is in particular about 470～1240dtex (to refer to elastomeric occasion.And in the occasion of natural rubber, sectional area is 0.05～1.5mm 2About, be in particular 0.1～1.0mm 2About) rubber covered wire with about 5～30 of the arranged spaced of 1～15mm, particularly 3～8mm, and respectively with about 200%～350% percentage elongation, special to be fixed up about about 240%～300% percentage elongation.
In addition, between the lateral surface of the inboard flaky material 12 in dorsal part extension 14 and the medial surface of outside flaky material 12, except with interior dress body 200 eclipsed width central parts, each position in its width both sides, to spread all over the successive mode of whole width (integral body that spreads all over buttocks cap 14C at least), a plurality of second elongate elastic telescopic parts 16 in the above-below direction devices spaced apart, and are fixed with the state that the predetermined elongation rate is upheld along width.
As the second elongate elastic telescopic parts 16, be preferably fineness degree is about 155～1880dtex, (refers to elastomeric occasion about special 470～1240dtex.And in the occasion of natural rubber, sectional area is 0.05～1.5mm 2About, be in particular 0.1～1.0mm 2About) rubber covered wire with about 2～10 of the arranged spaced of 5～40mm, particularly 5～20mm, and fix with 150%～300% percentage elongation, particularly 180%～260% percentage elongation respectively.
On the other hand, the outer load 12F of veutro only is made of the veutro main part same substantially with the dorsal part main part 13 of the outer load 12B of dorsal part (having occupied the part of the above-below direction scope identical with the side seals of the group of melt-coating part 12A), and form along the waistline direction extend rectangular-shaped, but do not have dorsal part extension 14 as the outer load 12B of dorsal part.
Promptly, among upper end (waist portion) W and lower portion U of load outside veutro (veutro main part) 12F, between the lateral surface of the part 12r that turns back of the medial surface of the inboard flaky material 12 among the W of upper end and outside flaky material 12, to spread all over the successive mode of whole width, with a plurality of veutro waist portion elastic telescopic parts 18 devices spaced apart on above-below direction, and fix with the state of upholding along width by predetermined percentage elongation.These veutro waist portion elastic telescopic parts 18 are disposed near bar number, fineness degree, percentage elongation, interval and the above-below direction of dorsal part waist portion elastic telescopic parts 17 as far as possible; But also can make both every data differences, under both different situations, the difference of bar number is below 10, is preferably below 5; The difference of fineness degree is below the 1880dtex, is preferably below the 470dtex, and the difference of percentage elongation is below 100%, is preferably below 40%; Difference at interval is below the 10mm, to be preferably below the 5mm.
In addition, between the lateral surface of the inboard flaky material 12 among the lower portion U of load 12F outside veutro (veutro main part) and the medial surface of outside flaky material 12, except with interior dress body 200 overlapping width central parts, each position in this upside and width both sides, to spread all over the successive mode of whole width, with a plurality of the 3rd elongate elastic telescopic parts 19 devices spaced apart on above-below direction, and to fix along the state of width extension by the predetermined elongation rate.The above-below direction of the 3rd elongate elastic telescopic parts 19 sets scope can be the part of lower portion, is whole lower portion (contractility acts on the scope of whole lower portion) but preferred in fact its sets scope.
As the 3rd elongate elastic telescopic parts 19, preferred dispose near bar number, fineness degree, percentage elongation, interval and the above-below direction of the first elongate elastic telescopic parts 15 as far as possible, but also can make both every data difference; Under both different situations, the difference of bar number is below 10, and is preferred below 5; The difference of fineness degree is below the 1880dtex, is preferably below the 470dtex; The difference of percentage elongation is below 100%, is preferably below 40%; Difference at interval is below the 10mm, to be preferably below the 5mm.
The veutro of illustrated embodiment outer load 12F only is made of the part of the above-below direction scope identical with having occupied melt-coating part 12A, but also can be same with dorsal part, constitutes to comprise: the veutro main part that has occupied the above-below direction scope identical with melt-coating part 12A; With the veutro extension that extends to the downside of this veutro main part.Thus, shape is formed along groin and identical shape.In this case, the area of veutro extension be preferably the dorsal part extension area 10%～80%, more preferably 20%～50%.If the veutro extension is excessive, diminish fit on the contrary, thereby not preferred.
On the other hand, as shown in the figure, when first, the second and the 3rd elongate elastic telescopic parts 15,16 and 19 be separately positioned on except with interior dress body 200 eclipsed width central parts the width both sides time, interior dress body 200 and outer load 12F, 12B is difficult to peel off, therefore comparatively preferred, but in this embodiment, except the elastic telescopic parts exist only in the embodiment of width both sides, also comprise following embodiment, promptly, constitute cross in dress body 200 and have the elastic telescopic parts from its width one side's side to opposite side, but cutting off the elastic telescopic parts with interior dress body 200 eclipsed width central parts, and be not subjected to the embodiment of contractility effect (not being provided with elastic telescopic parts etc. in fact).In addition, also part or all of first, second and the 3rd elongate elastic telescopic parts 15,16 and 19 can be arranged on dress body 200 in crossing and zone, have an effect so that its contractility spreads all over the whole width of dorsal part main part 13 and dorsal part extension 14 from its width one side to opposite side.
(interior dress body)
Interior dress body 200 can adopt shape arbitrarily, but it is a rectangle in the illustrated embodiment.As shown in Figure 3, interior dress body 200 has surface patch 30, opaque liquid sheet 11 and the absorber element 50 between above-mentioned two as bodyside.Also can be in the rear side of opaque liquid sheet 11, in the mode at the whole back side of dress body 200 in coating, perhaps be exposed to the outer load 12F of veutro and the dorsal part mode of the entire portion between the load 12B outward with coating, be fixed with between crotch load 12M outside the portion.In addition, also can be between surface patch 30 and absorber element 50, be provided with the intermediate (bluff bit (second sheet)) that is used to make the liquid that seen through surface patch 30 to move to absorber element 50 rapidly, but in order to hinder to the skin transferred heat, preferably between surface patch 30 and absorber element 50, at least with aftermentioned bag portion 57 eclipsed parts, preferably spreading all over whole between the two above-mentionedly, be not provided with miscellaneous part.And then, for prevent leakage of exudates arrive in two sides of body of dress body 200, can be provided with in the both sides of interior dress body 200 what bodyside was erect and stop limit 60,61.In addition, though do not illustrate, each component parts of interior dress body 200 can suitably be fixed up mutually by whole coating, slot scraping (bead) coating or the spiral coating etc. of hot-melt adhesive etc.In addition, interior dress body 200 also can use the loading and unloading of mechanical zipper or jointing material to be installed on freely on outer load 12F, the 12B.
(surface patch)
Surface patch 30 possesses the character through liquid, for example, the non-woven fabrics, porous plastic sheet etc. of porose or atresia can example be shown.In addition, wherein the raw fibre of non-woven fabrics can be kind arbitrarily, is not particularly limited.For example, olefin-based such as polyethylene or polypropylene, polyester system, synthetic fibers such as polyamide-based can example be shown, regenerated fiber such as viscose rayon or CUP, natural fibers such as silk floss etc., and use above-mentioned fiber more than two kinds and composite fibre of constituting, composite fibre etc.And then non-woven fabrics also can adopt any processing method to make.As processing method, known method, is for example arranged, can illustration water outlet acupuncture manipulation, spun-bond process, SMS method, hot rolling method, meltblown, needle point method, hot blast method, the sticking method of point etc.Particularly in order to be easy to the variations in temperature of perception from face side, comparatively excellent on the thinness of the non-woven fabrics that employing spun-bond process or SMS method process and the intensity balance, be suitable in this regard, even the non-woven fabrics that adopts the hot blast method to process is quantitatively low, also can absorb rapidly and dry feeling comparatively excellent, thereby comparatively suitable.
In addition, surface patch 30 can be made of 1 sheet, and also the lamination sheets that can be obtained by the applying of the sheet more than 2 constitutes.Equally, surface patch 30 can be made of 1 sheet on in-plane, also can and constitute by the applying of the sheet more than 2.
Under the situation that surface patch 30 is made of non-woven fabrics, its thickness is about 0.1～3mm, is in particular below the 0.5mm, and quantitatively is 10～40g/m 2About, particularly quantitatively be 25g/m 2When following, comparatively excellent from rear side to the conductivity of heat of skin, thereby comparatively preferred.
Be provided with under the situation that stops limit 60,61, the both sides of surface patch 30 are passed non-liquid permeability sheet 11 and are stopped between the limit 60,61, and rap around to the dorsal part of absorber element 50; In order to prevent soaking into of liquid, preferably utilize hot-melt adhesive etc. that the both sides of surface patch 30 are bonded in non-liquid permeability sheet 11 and stop on the limit 60,61.Thus, also can obtain to improve the inflexible effect of interior dress body 200 both sides.
(bluff bit)
As mentioned above, move to absorber rapidly, can be provided with the bluff bit 44 (with reference to Figure 20 (c)) of liquid penetration speed faster than the speed that sees through surface patch 30 in order to make the liquid that has seen through surface patch 30.This bluff bit 44 can not only make liquid move on to rapidly in the absorber and improve the absorbent properties of absorber, and can prevent the liquid that the absorbed phenomenon from absorber " refluence ", and can make and always be in dry status above the surface patch 30.Also can save bluff bit 44.
As bluff bit 44, can the material same with surface patch 30 be shown example, water thorn, spunbond, SMS and paper pulp non-woven fabrics and the mixing tab that constitutes by paper pulp and viscose rayon, put bonding die or crimped paper.Hot-wind nonwoven cloth loft height particularly, thus comparatively preferred.Hot-wind nonwoven cloth preferably uses the composite fibre of core sheath structure, and in this case, the resin that is used for core also can be polypropylene (PP), but is preferably the high polyester of rigidity (PET).Quantitatively be preferably 20～80g/m 2, 25～60g/m more preferably 2The fineness degree of the raw fibre of non-woven fabrics is preferably 2.2～10dtex.For the loft that makes non-woven fabrics becomes big, as all or part of the composite fibre in the raw fibre, the also preferred core that uses is at the core shift fiber or the doughnut of central authorities, or uses the fiber of core shift and hollow.
Bluff bit 44 is shorter than the width of absorber 56, and is disposed at centre, in addition, also can be arranged on the whole width that spreads all over absorber 56.The length direction length of bluff bit 44 also can be identical with the length of absorber 56, and its length will be also will bear in the short length range of region of fluid as the center.
(non-liquid permeability sheet)
The material of non-liquid permeability sheet 11 is not subjected to special qualification, for example can example illustrate: go up lamination (laminate) non-woven fabrics that forms by nonwoven layer being stacked in olefin-based resin, polythene strips etc. such as polyethylene or polypropylene; Substantially guarantee non-woven fabrics (in this case, constituting non-liquid permeability sheet) of non-liquid permeability etc. by waterproof membrane and non-woven fabrics with the moisture film of setting up defences by folder.Certainly, in addition,, also can example people be shown and like the material that uses with non-liquid permeability and poisture-penetrability in recent years for preventing sultry viewpoint.Has the thin slice of the material of non-liquid permeability and poisture-penetrability as this, for example can little porous sheet be shown example, this little porous sheet obtains as follows: mixing inorganic filler in olefin-based resins such as polyethylene or polypropylene, be configured as after the sheet, and it is stretched along single shaft or biaxially oriented.And then, adopt the non-woven fabrics of fento degree fiber and do not used the non-liquid permeability sheet of waterproof membrane also can be used as non-liquid permeability sheet 11, the above-mentioned non-liquid permeability sheet that does not use waterproof membrane adopts following method to obtain: by applying the space that heat or pressure dwindles fiber anti-leakage is strengthened, coating super absorbent resin or hydrophobic resin, or coating waterproofing agent.
In order to improve anti-leakage, preferred non-liquid permeability sheet 11 is involved in the both sides of absorber element 50 and extends to the surface patch 30 lateral both sides of absorber element 50.Thus, also can obtain to improve the rigidity effect of interior dress body 200 both sides.The width on this right side, extension left side suitably is respectively about 5～20mm.
In addition, also can implement the inner surface of non-liquid permeability sheet 11 or outer surface prints or painted design.And then, also can paste and implement printing or painted design sheet in the outside of non-liquid permeability sheet 11, this design sheet be with crotch between the different miscellaneous part of load 12M outside the portion.In addition, can be provided for the drainage indicator 80 that makes change color by contacting in the inboard of non-liquid permeability sheet 11 with moisture.Draining indicator 80 is preferably disposed between non-liquid permeability sheet 11 and the absorber 56, can be arranged in the zone more than 30% that spreads all over absorber 56 total lengths, especially preferably be arranged in the zone more than 60% that spreads all over its total length, preferred be provided with along the width central authorities of absorber 56 at least.Absorber 56 by aftermentioned package panel 58 cingens situations under, drain indicator 80 and also can be arranged at absorber 56 sides of package panel 58 and the either side in non-liquid permeability sheet 11 sides.In addition, being provided with the miscellaneous part of draining indicator 80 also can be disposed between non-liquid permeability sheet 11 and the absorber 56.Be set to the bag portion 57 of aftermentioned absorber 56 when overlapping when draining indicator 80, then with a spot of body fluid also variable color well, so comparatively preferred.In this case, preferably drain more than 30% of indicator 80, particularly overlapping with bag portion 57 more than 50%, preferred pouches portion 57 is set to make absorber 56 to connect (also can have package panel 58) along the vertical direction.
(stopping the limit)
Stop limit the 60, the 61st, extend to the strip-shaped parts that spreads all over whole fore-and-aft direction along the both sides of interior dress body 200, the purposes of its setting is to block the urine or the soft stool of transmitting and laterally moving on surface patch 30, prevent transverse leakage.
In the present embodiment, also as Fig. 3 and shown in Figure 4, each side is provided with doubly and stops limit 60,61 about interior dress body 200.As shown in the figure, under the state that launches diaper, the inboard stops that limit 61 tilts to erect to the width center side from the sidepiece of interior dress body 200, the outside stops that limit 60 is arranged at the width outside that the inboard stops limit 61 in the mode from interior dress body 200 sidepiece erect, the part of root side is erect obliquely to the width center side, more erects obliquely to the width outside by the part of end side than pars intermedia.
In more detail, stop in the limit 61 in the inboard, make to have and turn back and overlappingly be eighty percent discount to width with the banded barrier sheet 62 of the fore-and-aft direction equal in length length of interior dress body 200, and between near the sheet turn back part and this part of turning back, under the state that elongate elastic telescopic parts 63 are alongst upheld, on width, be fixed with to devices spaced apart many elongate elastic telescopic parts 63.The end, front and back of elongate elastic telescopic parts 63 is not fixed on the barrier sheet 62, stops the limit and be fixed with in the mode that can stretch forwards, backwards at the pars intermedia of elongate elastic telescopic parts 63.As barrier sheet 62, can be suitable for as required the hydrophobic treatment of softness such as spun-bonded non-woven fabrics (SS, SSS etc.), SMS non-woven fabrics (SMS, SSMMS etc.) and melt spraying non-woven fabrics and uniformity and disguised excellent non-woven fabrics having been implemented to utilize silicon etc., optimum fiber quantitatively be 10～30g/m 2About.Can use rubber covered wire etc. as elongate elastic telescopic parts 63.Under the situation of having used Spandex (spandex) rubber covered wire, preferred fineness degree is 420～1120dtex, and more preferably fineness degree is 620～940dtex.Gu periodic percentage elongation is preferably 150%～350%, more preferably 200%～300%.In addition, though do not illustrate, also can be provided with waterproof membrane for getting involved between the barrier sheet of eighty percent discount overlapping.
Stop in the inboard that preferably the terminal part on limit 61 disposes 1～2 elongate elastic telescopic parts 63, more preferably the pars intermedia between portion and the base end part also disposes 1～2 elongate elastic telescopic parts 63 endways.When having elongate elastic telescopic parts 63 at pars intermedia, be that fulcrum contacts with skin with face in the scope that spreads all over from pars intermedia to terminal part with these elongate elastic telescopic parts 63 easily.The allocation position of the elongate elastic telescopic parts 63 of pars intermedia is preferably in the inboard stops 30%～70% scope of height (the width length of protuberance) on limit 61.With in the diaper, the inboard stops that the height on limit 61 is preferably about 15～35mm at infant, and the configuration scope of elongate elastic telescopic parts 63 is preferably left the position of 5～25mm from end to base end side, and the position of 12～18mm more preferably.The terminal part and/or the pars intermedia that stop limit 61 in the inboard are provided with respectively under the situation of elongate elastic telescopic parts 63 abreast, and its configuration space 61d is preferably 2～10mm, more preferably 2～6mm.
And, stop in the limit 61 in the inboard, the end that is positioned at the opposition side of return portion branch on width forms the mounting portion (installed inside part) 65 at the back side of the side edge part that is fixed on dress body 200, part except that this mounting portion 65 forms the 65 outstanding ledge 66 (parts of the part of promptly turning back side from the mounting portion, be equivalent to inboard ledge), be fixed on the surface of surface patch 30 by the front and back fixed part 67 that has adopted hot-melt adhesive or heated sealant at the fore-and-aft direction both ends of this ledge 66, the fore-and-aft direction pars intermedia forms revocable free part (inboard free part), is fixed with elongate elastomeric element 63 along fore-and-aft direction with the state of upholding on this freedom part.
The outside stops that limit 60 also has with the inboard and stops limit 61 essentially identical structures, but has following difference: in its mounting portion (mounting portion, the outside) 68 is fixed on the rear side of dress body 200, more stop on the outer surface on limit 61 than the inboard mounting portion 65 on limit 61 that stops by the inboard of width central authorities one side; The fore-and-aft direction both ends of ledge (outside ledge) 69 comprise root side part and end side part, this root side part from the mounting portion 68 pass in the sidepiece of dress body 200, extend to the surface at fore-and-aft direction both ends that the inboard stops the inboard ledge 66 on limit 61, and be fixed on the surface at fore-and-aft direction both ends of inboard ledge 66, this end side part is turned back to the width outside from the end of this root side part, and is fixed on the root side part; The configuration of elongate elastic telescopic parts 63 and bar number etc.
But, stop limit 61 about the inboard, the terminal part of inboard ledge also can adopt the structure of turning back to the width outside, particularly be meant, if being the inboard, the height of this terminal part stops 61 below 1/2 of (the width length of protuberance) of height, limit, be preferably below 1/3, then end side part and the outside stop that limit 60 turns back equally to the width outside, and are fixed on the structure on the root portion side part.
Be arranged at the outside and stop that the bar number of the elongate elastic telescopic parts 63 on the free part (the free part in the outside) on limit 60 is preferably 2～6, more preferably 3～5.Configuration space 60d is that 3～10mm is comparatively suitable.When such formation, in the scope that disposes elongate elastic telescopic parts 63, contact with skin easily with face.Also can not only stop the end side on limit 60 but also dispose elongate elastic telescopic parts 63 in the root side in the outside.Be disposed at the outside and stop that the fineness degree of the elongate elastic telescopic parts 63 on the limit 60 and percentage elongation can stop the setting on limit 61 according to the inboard, but be preferably, its fineness degree and inboard stop that the fineness degree on limit 61 compares identically or thicker, and its percentage elongation and inboard stop that the percentage elongation on limit 61 compares identical or lower.
In addition, the fore-and-aft direction length L 6 of the front and back fixed part 67 of ledge 66,69 is preferably, and the inboard stops that the fore-and-aft direction length L 6 on the limit 61 forms with the outside and stops that this partial-length on the limit 60 compares identical or shorter; The fore-and-aft direction regular length that stops the elongate elastic telescopic parts 63 in the limit 60,61 is preferably, and the inboard stops that the fore-and-aft direction regular length on limit 61 forms with the outside and stops that limit 60 is identical or longer.Mounting portion 65 and border between the ledge 66 stop limit 60 and inboardly stop that limit 61 can be identical position in the outside, but the width center side is left more than the inboard border on limit 61 that stops in the border that stops limit 60 outside being preferably, and its distance of leaving is preferably in 10mm.
Be preferably the edge portion that stops ledge 66,69 sides in limit 60 and the inboard mounting portion 68,65 that stops limit 61 in the outside, be formed with the wire root fixed part that has adopted hot-melt adhesive or heated sealant.In addition, other fixed parts can use hot-melt adhesive etc. to be fixed up by suitable pattern.The root fixed position of preferred this wire is (specifically finger leaves the position of 0～5mm from lateral margin to width, is preferably the position of leaving 0～3mm) or rear side near the sidepiece of the face side of interior dress body 200.In this case, the limit that stops that is fixed on face side of turning back in fact only is the fore-and-aft direction both ends, therefore, do not giving full play to by front and back fixed part 67 between the crotch of the restriction of width center side in the portion, the outside stops that limit 60 and inboard stop limit 61 all to width outside erect, and the inboard stops that limit 61 formed bags broaden big.The root fixed part of wire is positioned at when the lateral margin broad ways is crossed the position of 5mm in face side, stops the limit in the portion also to width center side erect between crotch, and the inboard stops that limit 61 formed bags become narrow and small, thereby not preferred.Under the situation of the rear side of interior dress body 200, comparatively suitable at the root fixed position of wire in position apart from the lateral margin 0～20mm of interior dress body 200, but also can be positioned at the position of crossing 20mm.
Suitable parts such as the surface patch 30 in the outside and the inboard fixed object that stops the mounting portion 68,65 on limit 60,61 can be made as in the dress body 200, non-liquid permeability sheet 11, absorber element 50, and these parts also can be all via one stop the limit with another stop the limit be fixed on the dress body 200.
Stop in the limit 60,61 in the outside and the inboard that constitute like this, the contractility of elongate elastic telescopic parts 63 is brought into play the approaching effect in fore-and-aft direction both ends of sening as an envoy to, but with the fore-and-aft direction both ends that make ledge 66,69 with the fixed situation of mode of erect not relative be, make to form revocable free part between these both ends, thereby only free part erects in the mode of butt bodyside as illustrated in fig. 3.Special in the mounting portion 68,65 when being positioned at the rear side of adorning body 200, portion between crotch and near, the outside and the inboard mode erect of limit 60,61 that stop to open to the width outside, thereby the outside and inboard stop that limit 60,61 can be connecting around face and the thigh, thereby improved fit.On the other hand, between crotch the both sides, front and back of portion (abdominal part and back), stop that by the front and back fixed part 67 restriction outside and inboard limit 60,61 opens outside width, make the inboard stop that 61 highlands, limit erect thus, and the outside stops that the latter half on limit 60 erects too, therefore, can prevent from reliably to spill from 200 liang of sides of body of interior dress body at abdominal part and back.In addition, the inboard stops that the front and back fixed part 67 in the ledge 66 on limit 61 do not turn back, but stopping the front and back fixed part 67 in the protuberance part 68 on limit 60, the outside outwards turns back, therefore, can keep the released state between the outside and the inboard free part in the inboard and the outside that stops limit 60,61, the outside and inboard stop that 60,61 intervals with broad, limit erect reliably, can be fit to respectively with around the thigh, thereby it are also comparatively excellent to spill preventing property.
The size that stops limit 60,61 can suitably be determined, but in the occasion of infant with diaper, for example as shown in Figure 7, the inboard stops that setting height (the width length of the ledge 66 under the deployed condition) W5 on limit 61 is preferably 10～50mm, be preferably 15～35mm especially, the outside stops that setting height (the width length of the ledge 69 under the deployed condition) W6 on limit 60 is preferably 15～60mm, is preferably 20～40mm especially.In addition, be in the separating distance W4 that makes the inboard stop that limit 61 lodges between end under the surface patch 30 lip-deep states and be preferably 60～170mm, be preferably 70～120mm especially.In addition, make the outside stop limit 60 flatly folding and with the surperficial parallel state of surface patch 30 under, the separating distance W3 that is positioned between the most inboard crease is preferably 60～190mm, is preferably 70～140mm especially.
In addition, different with illustrated embodiment, also can only be provided with the outside and the inboard arbitrary limit that stops that stops in the limit 60,61.
(absorber element)
The absorber element 50 of this example has absorber 56 and coats the package panel 58 of whole this absorber 56, also can save package panel 58.
(absorber)
Absorber 56 can be formed by the aggregation of fiber.As this fiber assembly, preferred possess hydrophilic property, except assemble the fiber assembly form by short fibers such as Time of Fluff Slurry and synthetic fibers, also can use as required and the tow (fibre bundle) of synthetic fibers such as cellulose acetate opened fibre and the long filament aggregation that obtains.As fiber quantitatively, under the situation of assembling Time of Fluff Slurry and short fiber, for example can be made as 120～200g/m 2About, under the situation of long filament aggregation, for example can be made as 30～120g/m 2About.Fiber number during synthetic fibers is 1～16dtex for example, is preferably 1～10dtex, more preferably 1～5dtex.Under the situation of long filament aggregation, long filament also can be non-crinkled fibre, but is preferably crinkled fibre.The degree of crispaturaing of crinkled fibre, for example, per inch can be about 5～75, is preferably about 10～50, more preferably about 15～50.In addition, use the crinkled fibre of crispaturaing equably as a rule.
Absorber 56 from the CL of fore-and-aft direction central authorities respectively to 30%～48% of front side extension product total length L5, and to 25%～45% of rear side extension product total length L5.Absorber 56 also can be rectangular shape, but also as shown in Figure 6, have leading section 56F, rearward end 56B and between these ends and the using a sand filter for marking the hours during the device shape of the width contraction flow region 56N narrower when forming than leading section 56F and rearward end 56B, then can improve absorber 56 self and stop the fit of the coating thigh on limit 60,61, thereby comparatively be preferably.As concrete size, if the fore-and-aft direction length of absorber leading section 56F is made as L1, the fore-and-aft direction length of the lap of load 12F outside absorber 56 and the veutro is made as L2, the fore-and-aft direction length of absorber rearward end 56B is made as L3, the fore-and-aft direction length of the lap of load 12B outside absorber 56 and the dorsal part is made as L4, the minimum widith of contraction flow region 56N is made as W1, and when the width of the width of absorber leading section 56F and absorber rearward end 56B is made as W2, then preferably constitutes and satisfy following formula (1)～(4).
70mm≤W1＜W2≤190mm...(1)
0.5≤W1/W2≤0.85mm ......(2)
0mm≤L1-L2≤70mm ......(3)
0mm≤L3-L4≤50mm ......(4)
If W1 and W2 are narrow, then stop the setting instability on limit 60,61, and absorbtivity is insufficient; If W1 and W2 are wide, then can make the wearing feeling variation because of the decline of fit.
In addition, in the time of in being in described numerical range, do not have absorber 56 near the mounting portion 65 that stops limit 60,61 between crotch in the portion, therefore, can increase the freedom of movement that stops limit 60,61, stop that limit 60,61 is easy to open to the width outside, come in contact with face and skin easily, also can improve followability the active mating surface of thigh.In the both sides, front and back, the absorber 56 of interior dress body 200 sidepieces is present in the sufficient scope, thereby can make the setting that stops limit 60,61 become stable as basic point (fulcrum).Part from the both sides, front and back to portion between crotch is a displacement portion, in this displacement portion, width both side edges with interior dress body 200 is a benchmark, stop that limit 60,61 opens to the width outside from the posture that is erected in the width inboard, this stops that the posture change on limit 60,61 is subjected to the support until the existing absorber 56 of the sidepiece of interior dress body 200, thereby makes the whole setting dimensionally stable that stops limit 60,61.If exceed above-mentioned numerical range, when contraction flow region is excessive, portion between crotch then, the degree of freedom that stops limit 60,61 is too high, might form the gap easily around the thigh on the contrary, and because the both sides, front and back of portion do not have basic point (fulcrum) yet between crotch, thereby might make the setting that stops limit 60,61 become unstable.Otherwise, when too small, then reduced the degree of freedom that stops limit 60,61, so not preferred as if contraction flow region.
And then the whole fore-and-aft direction length L 7 of contraction flow region 56N is preferably more than the 80mm, particularly is preferably 120～260mm.If the fore-and-aft direction length L 7 of contraction flow region 56N is too short, then reduced the degree of freedom that stops limit 60,61, and the fit around 56 pairs of thighs of absorber is descended, hinder the activity of thigh; If it is long, stop that then the setting on limit 60,61 becomes unstable.
(superabsorbent polymer particle)
Be preferably spreading all over whole absorber 56 and internally disperse to maintain the superabsorbent polymer particle.The superabsorbent polymer particle is meant and also comprises " powder body " except that " particle ".The particle diameter of superabsorbent polymer particle can be identical with the particle diameter of the particle that is used for this absorbent commodity, is preferably below the 1000 μ m, is preferably 150～400 μ m especially.As the material of superabsorbent polymer particle, can use without particular limitation, but water absorption is that the above material of 40g/g is comparatively suitable.As the superabsorbent polymer particle, starch system, cellulose-based and synthesized polymer system etc. are arranged, can use the cross-linking agent of alkali compound, sodium carboxymethyl cellulose of starch-acrylic acid (salt) graft copolymer, starch-acrylonitrile copolymer and acrylic acid (salt) polymer etc.As the shape of superabsorbent polymer particle, normally used powder body shape thing is comparatively suitable, but also can adopt other shapes.
As superabsorbent polymer, can use polymer with being integral of antibiotic substance.Particularly suitable is antibacterial and deodorizing superabsorbent polymer particle, this antibacterial and deodorizing superabsorbent polymer grain contains in superabsorbent polymer with ionic part or all and the zeolite particles that forms that can carry out ion exchange in the silver ion displacement zeolite (below be referred to as the antibacterial and deodorizing zeolite), perhaps makes the antibacterial and deodorizing zeolite particles utilize static and be attached to the superabsorbent polymer particle surface.
As the superabsorbent polymer particle, suitable absorption speed is the polymer particle below 40 seconds.When if absorption speed surpasses 40 seconds, then be easy to be supplied to liquid in the absorber 56 and turn back to absorber 56 outer what is called and flow backwards.
In addition, as the superabsorbent polymer particle, suitable gel strength is the above polymer particle of 1000Pa.Thus, even under situation, also can suppress the adhesion sense after the Liquid Absorption effectively as fluffy absorber 56.Moreover as superabsorbent polymer, suitable absorption speed is the polymer below 50 seconds.
The content of superabsorbent polymer particle is preferably 100～400g/m 2About, particularly preferably in 170～220g/m 2Scope in, the content of superabsorbent polymer is more than the content of hydrophilic fibre, particularly, compares with weight, the ratio that is preferably superabsorbent polymer and fiber assembly is set at about 1.1～2.0: 1, be preferably about 1.4～1.6 especially: 1.At the content of polymer less than 170g/m 2Under, can only use as the toilet training purposes, but drain and repeatedly drain under the situation of (urinating) being unaware of sometimes with the person, can cause leakage of exudates to go out because of absorbtivity is not enough; When the content of polymer surpasses 220g/m 2The time, then grittiness is passing to the person of using easily, can strengthen in the toilet training use the consciousness of diaper with the person.
If needed, can on the in-plane of absorber 56, adjust the distribution density or the dispersion volume of superabsorbent polymer particle.For example, can make the dispersion volume of drain site of liquid more than other positions.Under the situation of considering difference between male, can improve the distribution density (amount) of the front side of men's diaper, can improve the distribution density (amount) of the central part of lady's diaper.In addition, also can be on the in-plane of absorber 56 partly (for example point-like) be provided with the part that does not have polymer.Perhaps, in absorber 56, be provided with under the situation of aftermentioned bag portion 57, compare, also can around bag portion 57, dispose superabsorbent polymer the most to high-density with other zones of described absorber.Particularly, compare with weight, the ratio that is preferably superabsorbent polymer and fiber assembly is about 1.4～2.2: 1.In addition, superabsorbent polymer also can only be disposed near the leading section of bag portion 57 to high-density.
(package panel)
Under the situation of having used package panel 58,, can use tissue paper, particularly crimped paper, non-woven fabrics, lamination that poly non-woven fabrics is arranged and offer foraminate sheet material etc. as its material.But, the tiny sheet material of hole order that the superabsorbent polymer particle can't be come off, in order to be easy to the variations in temperature of perception from face side, thereby thin low quantitative sheet material is comparatively suitable.At thickness is about 0.05～3mm, is in particular below the 0.2mm, and quantitatively is 5～25g/m 2About, be in particular 15g/m 2Situation under, therefore from the conductivity of heat excellence of rear side, be preferred to skin.Under the situation that adopts non-woven fabrics, adopt non-woven fabrics that spun-bond process or SMS method process, particularly adopt non-woven fabrics that the SMS method processes excellence comparatively on book degree and intensity balance, be preferred in this, its material can be used polypropylene, polyethylene/polypropylene etc.
In addition, embodiment is such as shown, have in the surface of absorber element 50 (wearer's face) side under the situation of seam of package panel 58, can make with the person and perceive variations in temperature effectively, thereby the overlapping width 58W of seam is narrower than the width 40W of the configuring area of variations in temperature material 40, and be preferably dimensioned to be below the 40mm, be preferably below the 20mm especially.Even narrow like this, because the phenomenon that the superabsorbent polymer particle is deviate from does not take place in above-mentioned reason yet.In addition, the seam of package panel 58 also is preferred embodiment nearby not comprise that the mode of width central authorities with mouthful butt of urinating is formed at by sidepiece.Particularly the overlapping quality award from the ministry of the seam sheet of the package panel 58 of bodyside is elected the part overlaid that has the variations in temperature material with aftermentioned as.
(between crotch outside the portion load)
Be provided with between the crotch that is exposed on the product external surfaces load 12M outside the portion in the rear side of interior dress body 200.Material as load 12M outside the portion between this crotch, can use and outer load 12F of veutro and the outer same material of load 12B of dorsal part, but also can use more high-intensity material, contain the material etc. and outer load 12F of veutro and the outer different material of load 12B of dorsal part of deodorant.Particularly, constitute, can use various non-woven fabrics such as spun-bonded non-woven fabrics, melt spraying non-woven fabrics, some bonded non-woven fabrics, hot-wind nonwoven cloth, gas point (air-point) non-woven fabrics, spun-laced nonwoven fabric and SMS non-woven fabrics by fibers such as PP, PP/PE, PP/PET; The non-woven fabrics that perhaps in above-mentioned non-woven fabrics, adds deodorant etc. and form etc.
When taking a seat, between crotch outside the portion load 12M can be subjected to high body and press.Therefore, the material that preferably has high (phozy) characteristic of friction solidness.
Between crotch outside the portion load 12M also can have as printing or the thin slice of painted design considerations.And situation with above-mentioned design sheet under, preferred disposition is that separately design is not overlapping.
Use flexible non-woven fabrics as crotch between the outer load 12M of portion and with its elongation when adorning in sticking on the length direction of body 200, can improve the fit of portion between crotch, thereby comparatively preferred.
Load 12M involves in to the health side from the width sidepiece outside portion between crotch, and when being adhesively fixed on the outer surface of barrier sheet 62 with hot-melt adhesive etc., the rigidity of dress body 200 both sides in improving.In such embodiment, be preferably between crotch that load 12M uses the high sheet material of rigidity (hardness) outside the portion.Particularly, the stiffness that has adopted Clarke's method (JISL1096C method) to measure is more than the 100mm, to be preferably more than the 150mm in the MD of sheet material direction (vertically) with CD direction (laterally) sum.
In illustrated example, load 12F, 12B and interior dress body 200 eclipsed parts outside veutro and dorsal part, adorn in load 12M is held in outside the portion between crotch between body 200 and veutro and dorsal part outer load 12F, the 12B, but also can stick on veutro and the dorsal part outside of load 12F, 12B outward.Between crotch outside the portion load 12M utilize hot-melt adhesive etc. stick in the back side of dress body 200 and inner surface or the outer surface of veutro and dorsal part outer load 12F, 12B.
(variations in temperature material)
In absorber 56, form bag portion 57, this bag portion 57 comprises 20% the position that is equivalent to article total length L6 from the CL of article fore-and-aft direction central authorities to the front side, and disposes in this bag portion 57 and be used for by contact the variations in temperature material 40 that urine is cooled off or heats with urine.Distance between the leading section of the leading section of bag portion 57 and absorber 56 is preferably 5%～30% of article total length L6, is preferably 10%～20% especially.The thickness of bag portion 57 is preferably 0%～50% of its peripheral region average thickness value, but more preferably absorber 56 forms along the mode that table back of the body direction runs through.When absorber 56 is run through along table back of the body direction in bag portion 57, can increase the volume of the bag that keeps variations in temperature material 40, and variations in temperature can be passed to efficiently health to the wearer.
In more detail, the bag portion 57 of illustrated example is set to, it is incorporated in 0%～40% the scope that is equivalent to article total length L6 from the CL of article fore-and-aft direction central authorities to the front side, and its fore-and-aft direction length 57L is 10%～20% of article total length L6, and its width 57W is 25%～60% of absorber 56 overall with W2.Variations in temperature material 40 example as shown only is arranged on like that in the bag portion 57 in the absorber 56, the diffusibility this point of infringement urine and comparatively preferred never to the effect this point of expense, but variations in temperature material 40 also can be arranged on bag portion 57 part in addition.In addition, the shape of bag portion 57 except as shown routine such rectangular-shaped, can also form suitable shapes such as triangle, circle shape, ellipticity.In addition, in Breeches type disposable diaper as the present embodiment, when the fore-and-aft direction scope that marsupial portion 57 will be set as shown in Figure 6 is configured to comprise the line that links the bottom of the side seals (melt-coating part 12A) of the left and right sides portion of load 12F outside the veutro, to bring efficient temperature to change to the zone on the veutro part of separating and be close to the wearer from mouthful appropriateness of urinating, thus comparatively preferred.But, going out in order to prevent the veutro end leakage of urinating from absorber 56, the distance between the front end of the front end of preferred pouches portion 57 and absorber 56 is more than the 20mm.
Preferred variations in temperature material 40 is arranged at the inside that spreads all over whole bag portion 57 equably, but its quantity also can be along with the difference at position difference.
Variations in temperature material 40 contacts with urine and utilizes heat of solution, hydration heat or reaction heat to wait to absorb or emit heat, thereby urine is cooled off or heats.As variations in temperature material 40 examples that absorb heat by the dissolving in urine, can enumerate moisture salt such as sodium acetate, sodium carbonate, sodium sulfate, sodium thiosulfate and sodium phosphate; Anhydrous salts such as ammonium nitrate, potassium nitrate, ammonium chloride, potassium chloride and Chile saltpeter; Carbamide; Sugar alcohol such as xylitol and Sorbitol etc.As coming exothermic variations in temperature material 40 examples, can enumerate aluminum chloride, aluminium sulfide and aluminium sulfide potassium etc. by the dissolving in urine.In the present invention, in these materials, the preferred organic compound such as sugar alcohol such as the Sorbitol of finding to have heat-absorbing action, xylitol or carbamide that use.Particularly the dissolubility of Sorbitol and xylitol is very excellent, and chemical stability is good, and human body is not caused harmful effect, thereby can be suitable for.Under the situation of having used the material that carries out neither endothermic nor exothermic by the dissolving in urine, if the dissolubility in urine is lower, then can not realize sufficient variations in temperature, thereby the dissolubility in the 100ml water of 20 ℃ of temperature is preferably more than the 30g, is preferably more than the 50g especially.In addition, be preferably the material that produces the above thermal change of 20cal/g, more preferably produce the material of the above thermal change of 35cal/g.In addition, the thermal change of unit are is preferably 1cal/cm 2More than.
As absorbing or exothermic examples of materials, can list ortho esters (ortho-ester) class or be that 1 to 8 alcohol or carbon number are such ketal class and constitutional isomer or the optical isomer of menthone ketal that 2 to 8 polyol reaction obtains by making menthone and carbon number by reaction with urine.In addition, swelling absorbs or exothermic variations in temperature material 40 examples as being undertaken by utilization urine, can list lightly crosslinked and the neutral polyacrylic acid of part.
The material of variations in temperature material 40 suitable particles shapes (containing powder shaped) also can use the fibrous material that waits other shapes.
In addition, sometimes under drainage indicator 80 as described above and bag portion 57 equitant embodiments, particularly drain indicator 80 and be set to connect along the vertical direction under the bag portion 57 equitant embodiments of absorber 56, by the contact of airborne moisture (dampness) in keeping or wearer's sweat or the contact that goes out moisture from the health bulk storage in use, can variable color and when draining, drain indicator yet.But, when variations in temperature material 40 when having hygroscopic material, for example be that the dissolubility in water is high and surface area is big as described above emboliform material is (as object lesson, emboliform Sorbitol or xylitol are comparatively suitable) time, the above-mentioned drainage indicator variable color of not expecting like that can be prevented.
In the diaper that constitutes like this, see through surface patch 30 when urinating and after being absorbed in urine in the absorber 56 and utilizing diffusion fully to move to the front side, come in contact with variations in temperature material 40 in the bag portion 57.Thus, occurrence temperature changes in bag portion 57, and its variations in temperature is not directly passed to wearer's veutro part via absorber 56.When making the urine that makes after abundant diffusion is moved like this and help the structure of variations in temperature, can suppress to be supplied with the temperature reduction of the urine that comes or the phenomenon of offsetting by the back by supplying with the variations in temperature that the urine that comes produces earlier, and the variations in temperature that adapts of the use amount of generation and variations in temperature material 40.And this sufficient variations in temperature takes place in bag portion (table the back of the body breakthrough part) 57, thereby is difficult to by heat insulation and can pass to health efficiently.And then, under the situation of illustrated embodiment, fully the bag portion 57 of size roughly is positioned at wearer's abdominal part or hypogastric region, bulging relatively on wearer's abdominal part or hypogastric region body surface, thereby be easy near the variations in temperature position in the bag portion 57, and the variations in temperature in the bag portion 57 is easy to pass to the wearer.
As shown in figure 10, following formation also is preferred embodiment, promptly, the bag portion 57 that comprises variations in temperature material 40 is in 25%～45% the position that is equivalent to article total length L6 from the CL of article fore-and-aft direction central authorities to the front side, 20%～40% the position that is equivalent to article total length L6 from the CL of article fore-and-aft direction central authorities to rear side, and along the width central authorities of article, the width of bag portion 57 is equivalent to 25%～60% of absorber 56 overall with W2.In this embodiment, because the bag portion 57 that includes variations in temperature material 40 extends in the mode that comprises the position of urinating, therefore has the advantage that under few situation of urine amount or the situation more than the urine amount, all can produce sufficient variations in temperature.In addition, the bag portion 57 of illustrated example is set to oblong-shaped, but also can be set to suitable shapes such as triangle in above-mentioned size range.Other formations are same with described embodiment basically, thereby specially omitted its explanation.
In addition, as shown in figure 11, the bag portion 57 that comprises variations in temperature material 40 forms ring-type in the mode of the middle section 55 that surrounds absorber 56, and also preferably making its live width 57B is about 5%～10% of article total length L6.In this case, be preferably, middle section 55 from the CL of article fore-and-aft direction central authorities respectively to 15%～35% of front side extension product total length L6, and to 15%～35% of rear side extension product total length L6, and extend along the width of article central authorities, and width be absorber 56 overall with W2 40%～75%.In this embodiment, be absorbed in urine in the absorber 56 no matter from draining the position to which direction diffusion, can both arrive the bag portion 57 that includes variations in temperature material 40 and coming in contact with variations in temperature material 40.Therefore, the variations in temperature material 40 in more urine and the bag portion 57 contact, even perhaps the skew of the dispersal direction of urine also can be reliably comes in contact with bag portion 57 interior variations in temperature material 40.Other formation is same with described embodiment basically, thereby has specially omitted its explanation.
Can suitably determine the use amount of variations in temperature material, still, use under the situation of sugar alcohol as the variations in temperature material that the total content in the article is about 4～20g; Use under the situation of diaper at toilet training especially, the total content in the article is preferably about 8～12g.In addition, quantitative (content of unit are) with the variations in temperature material in the part of variations in temperature material 40 is 200～1200g/m 2About, particularly be preferably 400～600g/m under the situation of toilet training with diaper 2About.
At this, for being felt significantly, the wearer urinates, and above, the above variations in temperature of 5 degree particularly of 4 degree takes place in the surface of preferred surface sheet 30.Particularly, in each above-mentioned embodiment, between surface patch 30 and absorbent portion element 50, be not provided with under the situation of miscellaneous part, in order to realize such variations in temperature, preferably constitute satisfying following condition.
The material of liquid permeability surface patch 30: non-woven fabrics;
The thickness of liquid permeability surface patch 30: 0.1～0.5mm;
Liquid permeability surface patch 30 quantitatively: 10～40g/m 2
The material of package panel 58: crimped paper or SMS non-woven fabrics;
The thickness of package panel 58: 0.05～0.2mm;
Package panel 58 quantitatively: 5～25g/m 2
The kind of variations in temperature material 40: the dissolving generation endothermic reaction that can be in urine also makes the refrigerative material of urine;
The dissolubility of variations in temperature material 40 (in the 100ml water of 20 ℃ of temperature): more than the 30g, particularly more than the 50g;
The gross area of bag portion 57: 2500～8000mm 2
The quantitative of variations in temperature material in the bag portion 57 (refers to remove the value that the total use amount of variations in temperature material is obtained with the bag portion gross area.Other occasions are same.)：500～1000g/m 2。
＜temperature experiment 〉
(example 1)
Make the Breeches type disposable diaper of the structure of Fig. 1～shown in Figure 10.The specification of thin portion as shown below.
Liquid permeability surface patch 30: thickness 2mm, quantitative 25g/m 2The hot-wind nonwoven cloth that constitutes by the PE/PP composite fibre;
Package panel 58: thickness 1mm, quantitative 15g/m 2Crimped paper;
The size of absorber 56: from the fore-and-aft direction guide center to the position of front side 205mm up to the position of fore-and-aft direction guide center to rear side 190mm; And from the width guide center to the position of left side 70mm up to the position of width guide center to right side 70mm; Area is 55,300mm 2
The kind of variations in temperature material 40: Sorbitol (heat of solution is-26cal/g " Sorbit " of DongHe HuaCheng Industry Co., Ltd's system);
The dissolubility of variations in temperature material 40 (in the 100ml water of 20 ℃ of temperature): 70g;
The size of bag portion 57: in the rectangular extent of total length 70mm, overall with 40mm, leading section is apart from the leading section 75mm of absorber 56; Area is 2800mm 2
Variations in temperature material 40 in the bag portion 57 quantitatively: 500g/m 2
The structure of absorber 56: paper pulp fiber and superabsorbent polymer particle (along the thickness direction of absorber 56 and therewith the orthogonal direction of direction disperse equably);
Paper pulp in the absorber 56 is quantitative: 110g/m 2
Superabsorbent polymer in the absorber 56 quantitatively: 160g/m 2
The infiltration rate of superabsorbent polymer: 35 seconds.
(example 2)
As shown in figure 13, made except making variations in temperature material 40 the preset range of absorber 56 upper surfaces scatters with scheduled volume the Breeches type disposable diaper that other structures and example 1 are same.The specification of thin portion is as follows.
Liquid permeability surface patch 30: thickness 2mm, quantitative 25g/m 2The hot-wind nonwoven cloth that constitutes by the PE/PP composite fibre;
Package panel 58: thickness 1mm, quantitative 15g/m 2Crimped paper;
The size of absorber 56: from the fore-and-aft direction guide center to the position of front side 205mm up to the position of fore-and-aft direction guide center to rear side 190mm; And from the width guide center to the position of left side 70mm up to the position of width guide center to right side 70mm; Area is 55,300mm 2
The kind of variations in temperature material 40: Sorbitol (heat of solution is-26cal/g " Sorbit " of DongHe HuaCheng Industry Co., Ltd's system);
The dissolubility of variations in temperature material 40 (in the 100ml water of 20 ℃ of temperature): 70g;
Size with part of variations in temperature material 40: from the fore-and-aft direction guide center to the position of front side 160mm up to the position of fore-and-aft direction guide center to rear side 40mm; And from the width guide center to the position of left side 50mm up to the position of width guide center to right side 50mm; Area is 20,000mm 2
Have variations in temperature material 40 in the part of variations in temperature material 40 quantitatively: 500g/m 2
The structure of absorber 56: paper pulp fiber and superabsorbent polymer particle (disperseing equably) along the thickness direction of absorber 56 and with the orthogonal direction of its thickness direction;
Paper pulp in the absorber 56 is quantitative: 110g/m 2
Superabsorbent polymer in the absorber 56 quantitatively: 160g/m 2
The infiltration rate of superabsorbent polymer: 35 seconds.
(example 3)
Make except marsupial portion 57 and variations in temperature material 40 this point are not set in absorber 56, have with the Breeches type disposable diaper of the same structure of example 1 with as example 3.
(experimental technique and experimental result)
The artificial urine of preparing 37 ℃ of temperature, 50cc amount is positioned in the beaker, with this artificial urine from about 15cm top with about 3 seconds after the surfaces supply of the fore-and-aft direction central authorities of diaper and width central authorities, diameter near the width middle position (leading section of bag portion 57) that leaves the 70mm of the whole length of article from the fore-and-aft direction mediad front side of diaper is in the scope of 5cm, uses the thermometer of non-contact type to measure every the scheduled time.
The curve chart of measurement result is shown among Figure 12.Can distinguish also that according to this curve chart example 1 of the present invention is compared with example 2, decrease of temperature speed is faster, and minimum temperature is lower, and its minimum temperature can be kept the sufficient time.
＜other preferred implementations 〉
Under the situation of having used emboliform variations in temperature material 40, also can constitute and variations in temperature material 40 is not fixed and can in bag portion 57, moves, but inside at diaper, the particle shape thing of variations in temperature material 40 can move freely, might make the variations in temperature when urinating insufficient, thereby can seek to be used to the unit that prevents that variations in temperature material 40 from moving.For example, also can variations in temperature material 40 be fixed on the sheet material (referring to package panel 58 under the situation of illustrated embodiment) of the formation bottom of bag portion 57 by fixed cells such as bonding agents.
In addition, by emboliform variations in temperature material 40 is carried out heating and melting, and make its curing and can dispose with solid state, make variations in temperature material 40 not have the particle shape composition of the state of moving freely like this, or only have the particle shape composition of the state of moving freely on a small quantity, and most of particle can not move.
When making the diaper of this embodiment, under the situation with the parts that heat with variations in temperature material 40, the fusing point that is preferably variations in temperature material 40 is lower than the fusing point of the parts that heat with variations in temperature material 40.That is, disposable diaper comprises thermoplastic resins such as common polyethylene, polypropylene, has fusing point smaller or equal to these resins so be preferably variations in temperature material 40.Particularly low-melting polyethylene in the common thermoplastic resin has the fusing point about 100～130 ℃ usually, thereby the fusing point of variations in temperature material is preferably below 130 ℃, more preferably below 100 ℃.In addition, when product is taken care of, can not melt, preferably have the fusing point more than 70 ℃ in order to make variations in temperature material 40.As such variations in temperature material 40, can list Sorbitol and xylitol that fusing point is about (fusing point is because of different some difference of purity) about 95～110 ℃ usually.
In addition, because variations in temperature material 40 is applied to the inside of diaper with the state of heating and melting or is applied on the parts that constitute diaper, therefore especially variations in temperature material 40 adjacent parts be non-woven fabrics or under the situation of the fiber assembly of absorber 56, if the viscosity of variations in temperature material 40 when fusion is lower, then might be difficult to be impregnated in the fibre gap and causes loss of adhesion.In addition, if the viscosity of variations in temperature material 40 when fusion is higher, then be difficult to be configured in the predetermined position.From this viewpoint, as variations in temperature material 40, preferably the viscosity under the temperature when fusion (for example 70～130 ℃) is 5～80 pools (poise).
Particularly, by variations in temperature material 40 heating and meltings and heat bonding are fixed on around it on the adjacent parts, variations in temperature material 40 can not moved, thereby can in heat bonding zone (for example portion between crotch), bring into play the variations in temperature function reliably.In addition, effect is brought into play as the bonding part of its parts up and down that are used to be adhesively fixed in the heat bonding position that also can expect variations in temperature material 40.
The heat bonding position of variations in temperature material 40 so long as adjacent to around parts, just be not particularly limited, under the situation of illustrated example, can be in absorber 56 and the package panel 58 at least one.Under the situation that makes variations in temperature material 40 heat bondings, its heat bonding position is preferably in the whole bag portion 57, also can be a part wherein; Outside bag portion 57, contain under the situation of variations in temperature material 40, its variations in temperature material also can heat bonding around on the adjacent parts.
As with the method for variations in temperature material 40 heat bondings on absorber 56 objects such as heat bonding such as grade, can use following method (first method): after suitably the variations in temperature material 40 of shape is positioned on the predetermined position of upper surface of heat bonding object parts with particle shape (containing powder shaped) or short fiber shape etc., after perhaps being comprised in the inside predetermined position (also containing situation about being held between a plurality of parts) of heat bonding object parts, variations in temperature material 40 is heated simultaneously together with heat bonding object parts, be attached on the fiber of heat bonding object parts only making variations in temperature material 40 form molten condition after, cool off so that variations in temperature material 40 solidifies.According to this first method, based on conditions such as the quantity of variations in temperature material 40 and heat time heating times, little emboliform variations in temperature material or the integrated block variations in temperature material 40 that forms of fused a plurality of variations in temperature material is attached on a plurality of positions of heat bonding object parts before the size ratio fusion; The variations in temperature material 40 of perhaps membranaceous or bone trellis etc. is attached on the heat bonding object parts continuously.
As other method, also can use following method (second method), promptly, imitateed the coating process of the hot-melt adhesive that is adopted on the technical field of absorbent commodity, use nozzles etc. are coated on the melt liquid of variations in temperature material 40 on the predetermined position of heat bonding object parts, and make its cooling curing.
In first method, variations in temperature material 40 is contained under the situation of heat bonding object components interior, except with the variations in temperature material 40 of particle shape etc. with the manufacturing raw material (fiber etc.) of heat bonding object parts mixes, as fiber assembly, have from outside to inner gap situation at heat bonding object parts, by emboliform variations in temperature material 40 being applied initial velocity its impetus is spread on the heat bonding object parts more suddenly than free-falling, also can make variations in temperature material 40 invade heat bonding object components interior.
Heating unit in first method is not particularly limited, but can adopt for example Figure 16～unit shown in Figure 19.Figure 16 and unit shown in Figure 17 used utilize high temperature air pass through to realize the hot-air drier that heats.Have in the unit shown in Figure 16, dispose the heat bonding object parts 300 of variations in temperature material 40 at predetermined portions by conveyer belt 301 conveyances, utilize simultaneously along the hot blast that passes through with the orthogonal direction of conveyance face 302 it is heated, similarly utilize thereafter along the wind 303 that passes through with the orthogonal direction of conveyance face and cool off.In addition, in the unit shown in the (a) and (b) of Figure 17, predetermined portions is disposed the heat bonding object parts 300 of variations in temperature material 40, be wound on to be arranged on the suction roll 311 that is used to supply with in the high temperature air heating clamber 310 and transfer, utilize the hot blast 312 that passes through to the inboard from the outside of suction roll 311 to heat simultaneously, by it be wound on the chill roll 313 that be arranged at heating clamber 310 outside on transfer cool off thereafter.
In addition, in the heating unit shown in Figure 180, be wound on the warm-up mill 320 by the heat bonding object parts 300 that predetermined portions disposed variations in temperature material 40 and transfer, and make the heat of warm-up mill 320 pass to the variations in temperature material, and it is heated from the single face side by contact.
And then, in the heating unit shown in Figure 19, pass between pair of rolls 330,331 or 340,341 by the heat bonding object parts 300 that make predetermined portions dispose variations in temperature material 40, at least one roller in this pair of rolls 330,331 or 340,341 is a warm-up mill, heat with warm-up mill passes to the variations in temperature material by contact thus, thereby it is heated.In this case, shown in Figure 19 (a), can make two rollers, 330,331 surfaces become level and smooth flat roll, and on heat bonding object parts 300, do not form jog, also can be shown in Figure 19 (b), make any roller 340 become the knurling rolls that are provided with the jog of predetermined pattern on the surface, thereby on a face of heat bonding object parts 300, form jog.Particularly in the latter case, also preferably constitute, the protuberance pattern that makes knurling rolls 340 only forms corresponding to the zone of the heat bonding part of variations in temperature material, thereby only to this zone heating.Because the heat bonding part is only forming with the corresponding zone of the protuberance pattern of knurling rolls 340, so variations in temperature material 40 also can be configured in than in the wideer scope of the protuberance pattern of knurling rolls 340.If used the method for heat hot adhering object parts 300 partly like this, only then need not presumptive area configuration variations in temperature material 40 at heat bonding object parts 300, and can be for example by whole configuration variations in temperature material 40 at heat bonding object parts 300, only predetermined zone is carried out local heat, thereby can form the heat bonding part partly.In addition, when the protuberance pattern that makes knurling rolls 340 has a plurality of differential height, can also make variations in temperature material 40 form the part of thicker heat bonding and the part of thin heat bonding respectively.
The heating and melting of the variations in temperature material 40 in first method not only can be implemented when making heat bonding object parts, can also be in the suitable stage of thereafter manufacture process, for example, in whole, adorn on body 200 or the whole diaper and implement finishing the back before form Product Status under the assembling done state of interior dress body 200 (before the assembling that forms Product Status finishes) or in assembling.As the heating means under this situation, can application examples such as above-mentioned Figure 16～unit shown in Figure 19.
In first method, owing to be thermally bonded in variations in temperature material 40 on the heat bonding object parts through once being cured after fusing and aqueousization, so surface area diminishes again.Therefore, the area that contacts with urine in the variations in temperature material 40 diminishes, thereby can suppress temperature changing speed, improves persistence.But if temperature changing speed is slack-off without exception, then the wearer might be difficult to feel variations in temperature.Therefore, following formation also is a preferred implementation: use the little particle shape thing of bulk density as variations in temperature material 40, do not make its whole fusions but partial melting, a part is melted and becomes the high solid of bulk density, the remaining little particle shape thing of bulk density (also not heat bonding) that still is left.If emboliform variations in temperature material 40 is the particle diameter with the degree size, the low more then surface area of bulk density is big more so, and is high more with the contacting efficiency of urine, thereby temperature changing speed is accelerated.Particularly be dissolved in the urine and produce under the situation that variations in temperature gives birth at variations in temperature material 40, this trend is comparatively obvious.Therefore, only make under the fused situation of a part of variations in temperature material 40 like that as mentioned above, be maintained emboliform variations in temperature material 40 and produced the variations in temperature effect soon, and the variations in temperature material 40 of melting and solidification has produced the variations in temperature effect a little later, therefore can obtain to have concurrently the variations in temperature of quick-acting and late effect property.For the quick-acting that obtains such variations in temperature and the balance between the late effect property, the remaining ratio of particle shape composition is comparatively suitable about 30 weight %～70 weight %.And then from the viewpoint that prevents that variations in temperature material 40 is moved, the remaining ratio of particle shape composition is comparatively suitable about 0～50 weight %.Therefore, the remaining ratio of particle shape composition is preferably 30 weight %～50 weight %.
As the low emboliform variations in temperature material 40 of bulk density, the particle of the shape that granule and concave-convex surface are many and surface or inner porous plasmid such as particle with minute aperture are comparatively suitable.The degree of bulk density is preferably suitably determined, is preferably below 50% of true density (space more than 50% (space) with apparent volume).For example, under the situation of Sorbitol, true density is 1.50g/cm 3, therefore, bulk density is preferably 0.75g/cm 3Below, 0.50～0.70g/cm more preferably 3, be preferably 0.55～0.65g/cm especially 3In addition, if particle diameter is bigger, then apparent bulk density diminishes, but surface area becomes big, and therefore, under the situation of having used emboliform variations in temperature material 40, its mean diameter (JIS K1474-2007 median diameter) is preferably 200～600 μ m.
Adopt aforesaid method, can variations in temperature material 40 heat bondings are inner or constitute on the parts of diaper at diaper, but only can make heat bonding part hardization like this, the adherent feeling variation also reduces the fit to health.Therefore, combination softnessization described later unit.That is, in first module, the part that comprises heat bonding part of variations in temperature material 40 is applied mechanical pressure, so that the variations in temperature material 40 of heat bonding is broken into pieces.Because heat bonding object parts are being located in when pressurizeing between roller and can handling continuously, therefore such processing is comparatively preferred.Also can when pressurization, be accompanied by heating, but because be difficult to crush the variations in temperature material, so preferably under situation about not heating, pressurize.
Except processing that whole object part is pressurizeed, also can process by point-like ground that looses such as for example so-called embossing processing locally.Figure 14 represents the latter's pressurization embodiment, label 45 expression pressurization part, the non-pressurised portion of label 46 expressions.Under the situation of the pressurization embodiment that is in the latter, the Center Gap 45d of pressurization part 45 all is preferably in the scope of 2～25mm on fore-and-aft direction and width.In addition, have pressurization part 45 and non-pressurised 's 46 part, non-pressurised 46 area ratio that is occupied in the per unit area is preferably about 20%～70%, is preferably about 30%～50% especially.If the interval of pressurization part 45 is wide, or non-pressurised 46 area is excessive, then is easy to make softnessization insufficient; If the interval of pressurization part 45 is narrow, or non-pressurised 46 area is too small, then almost breaks into pieces equally with the complete quilt of heat bonding part, has increased from the amount of heat bonding object parts from the variations in temperature material 40 that takes off when pulverizing.In addition, can suitably determine the arrangement of pressurization part 45, except forming the ranks shape shown in Figure 14 (a), also can form the zigzag shown in Figure 14 (b).By pressurization processing broken into pieces and the part of the variations in temperature material 40 of refinement be in from the parts of institute's heat bonding break away from and can the diaper internal freedom the state that moves.It is preferably less that this breaks away from thing (particle shape composition), particularly, is preferably about 0～30 weight % of whole variations in temperature material 40, is preferably 0～10 weight % especially.In addition, the described in the present invention particle shape composition that is in the state that can move freely in the diaper is not limited to granular or powdery, as long as it is not fixed on the parts that constitute diaper, and can move freely at in-plane at least and get final product, it comprises suitable shapes such as short fiber shape, bulk.But,, be meant that greatest length is below the 30mm when going up in any direction measured length, and maximum weight is below the 1g about each " particle ".Certainly, if " particle " is excessive, can produce sense of discomfort when then wearing, therefore in fact greatest length is below the 10mm, and maximum weight is the following degree of 0.2g.
As shown in figure 15, Unit second is so that form pattern (instant heating bonding portion and non-the heat bonding partly replace) setting that is interrupted shape and form on the heat bonding of variations in temperature material 40 part at least one direction in fore-and-aft direction and width.In more detail, in the example shown in Figure 15 (a), along the heat bonding of successive muscle shape of fore-and-aft direction or zonal variations in temperature material 40 multiple row is arranged partly, these multiple row heat bonding part devices spaced apart 47 ground are arranged on the width.In addition, in the example shown in Figure 15 (b), suitably the heat bonding of the variations in temperature material 40 of shape part is got up to form the arranged in patterns of being interrupted shape on the both direction of fore-and-aft direction and width.The heat bonding part of the variations in temperature material 40 of this moment forms rectangular-shaped in illustrated example, but also can be diamond shaped, triangle and toroidal.In addition, being arranged in of the heat bonding of variations in temperature material 40 part forms the ranks shape in the illustrated example, arranges arbitrarily but can form zigzag etc.The interval of the heat bonding part of variations in temperature material 40 can suitably be determined, but the interval on fore-and-aft direction and the width all is preferably about 3～15mm.In addition, the width 48 on the interruption direction of each variations in temperature material 40 is preferably about 3～40mm, is preferably about 5～10mm especially.If the interval 47 between the heat bonding of variations in temperature material 40 part is wide, or width 48 is narrow, then the maintenance dose of variations in temperature material 40 might be not enough; If 47 is narrow at interval, or width 48 is wide, then might the softnessization deficiency.
When so being interrupted the heat bonding part of configuration variations in temperature material 40, except variations in temperature material 40 is heated after on the heat bonding object parts with predetermined interruption pattern arrangement again, heating pattern can also be made as (part) of interruption, or the melt liquid of variations in temperature material 40 is coated with by predetermined interruption pattern, make thus.In Unit second, the non-heat bonding part (particle shape composition) of variations in temperature material 40 also is preferably about 0～30 weight %, is preferably 0～10 weight % especially.
Unit the 3rd forms following state, promptly, in the part of a plurality of variations in temperature materials 40 that contain particle shape etc., make the 30 weight %～90 weight % (being preferably 50 weight %～70 weight % especially) of variations in temperature material 40 carry out heat bonding, and the variations in temperature material 40 that makes remainder (70 weight %～10 weight %, particularly 50 weight %～30 weight %) does not carry out the state of heat bonding.By the heat bonding ratio of such inhibition variations in temperature material 40, also can reduce the hardization that the heat bonding because of variations in temperature material 40 produces.Such embodiment can not be made under the situation of having used the above-mentioned second heat bonding method, but in first method, in the preset range of heat bonding object parts, dispose under the state of variations in temperature material 40, can be by by the 10 weight % that make its variations in temperature material 40～90 weight % heat bondings, and make remainder not the degree of heat bonding heat, make thus.In addition, Unit first～the 3rd can with wherein arbitrarily the unit combination of two or three get up to use.
Utilize these methods can suitably adjust gentle remollescent degree, the part of the heat bonding part on diaper with variations in temperature material 40, its rigidity is preferably 15～50cN/50mm, is preferably 20～35cN/50mm especially.In addition, part in the heat bonding part that does not have variations in temperature material 40, its rigidity is preferably about 1～25cN/50mm, be preferably about 5～15cN/50mm especially, in normal circumstances, having the part of heat bonding part of variations in temperature material 40 and the poor rigidity that does not have a described heat bonding part partly is preferably about 5～20cN/50mm.
In addition, rigidity is meant the meaning of flexural rigidity (rigidity), according to JIS K7171 (test method of plastics-flexural rigidity), adopts following method to measure.In mensuration, use TENSILON testing machine (the radius of curvature R 2=5.0 of the radius of curvature R 1=5.0 of pressure head terminal part ± 0.1mm, support plate terminal part ± 0.2mm), adorn the flexural rigidity of the product fore-and-aft direction of body 200 in measuring.Removal is to measuring influential elastic telescopic parts from interior dress body 200, and the rectangle that intercepts diaper length direction 80mm and diaper width 50mm again from above-mentioned parts is made test film.50mm in the unit of bending rigid value is the length of the minor face of test film, also is that when test is by the width of the test film of pressure head deflection.Above-mentioned test film is positioned on a pair of support plate, make the length direction of test film towards setting up with the orthogonal direction of each plate, it is circular-arc terminal part that described a pair of support plate has the cross section respectively, and be configured to make the spaced apart and aligned in position of end (upper end) of two terminal parts, the terminal part of pressure head is configured on this test film in the mode of slight contact.At load cell (load cell) is that 5kg (scope is 196cN), speed are that pressure head is descended, and obtains load-deflection curve thus.With the maximum of the bending stress that obtained as bending rigid value (cN/50mm).In addition, under the situation of size less than described print size as the position of determination object, measure with the test film of small dimension, according to the size ratio, passing ratio calculates and converts.
Do not damage the additive method of flexibility as preventing variations in temperature material 40 from moving, proposed variations in temperature material 40 is arranged at method in bag portion (omitting diagram) as fibrous (or cotton shape) yet.Because the layer of fibrous variations in temperature material 40 is comparatively soft, even therefore have the part of variations in temperature material 40 hardization takes place hardly also.In addition, because surface area is big and have tiny space part at interlayer, therefore can quicken the dissolving of variations in temperature material 40 in water (urine).And then variations in temperature material 40 can not move freely in diaper.Certainly, residual hardly in diaper have a particle shape composition that can move.
For variations in temperature material 40 being become fibrous layer, can use the common fibre technology or the coating technique of hot-melt adhesive.As representational technology, can enumerate as the spun-bond process of fibre technology or meltblown, as curtain formula spraying (curtain Spray) method of hot-melt adhesive coating technique.In these methods, use the nozzle unit of different shape to obtain fibrous material respectively, but being that nozzle unit has, their common ground is used for a plurality of ejiction openings and the air ejiction opening of fused mass with thread ejection.The variations in temperature material 40 that is supplied to nozzle unit with molten condition sprays from ejiction opening.And, under the air effect of spraying, form fibrously by the air ejiction opening from the variations in temperature material 40 of ejiction opening ejection, be dispersed on the conveyer belt or constitute on the parts of diaper, and form long filament shape fiber (continuous fiber) aggregation layer.In addition, described air is preferably heated air.It is identical or exceed temperature more than 50 ℃ than this fusing point that the temperature of heated air is preferably fusing point with variations in temperature material 40, more preferably exceeds 50～120 ℃ temperature than this fusing point.In addition, the injection of air is pressed and is preferably 1.0～3.0kg/cm 3
In addition, also can imitate the manufacture method of cotton candy to form the deposit of the variations in temperature material 40 of continuous shape, with its suitable molding or cut off the back for use.Under variations in temperature material 40 situation for the sugar alcohol that shows the such character of gritty sugar, the manufacturing technology of having used such cotton candy is still preferable methods also.
Fibrous variations in temperature material 40 may not need heat bonding.Though a part of heat bonding of the fibrous material by the fused variations in temperature material 40 of institute can be fixed securely constituting on the parts of diaper, only is fibrous layer as mentioned above and just can prevents from fully to be moved in the diaper.But, also can be with this fibrous layer as layer for positive bonding usefulness.The fineness degree of the fiber of variations in temperature material 40 can suitably determine, but can be preferably about 1～1000dtex, is preferably about 1～4dtex especially.
Omitted the explanation of use amount about position, the variations in temperature material 40 of layer that fibrous variations in temperature material 40 is set, rigidity etc. at this because this with above-mentioned main embodiment in variations in temperature material 40 the heat bonding part equally.
On the other hand, moving of variations in temperature material 40 can be as mentioned above like that by solving variations in temperature material heat bonding on the suitable parts of absorbent commodity inside, but might make the partially hardened of 40 heat bondings of variations in temperature material, also can damage the flexibility of absorbent commodity.Therefore, following embodiment has also been proposed, promptly, as Figure 20 (a) and shown in Figure 21, variations in temperature material 40 in the bag portion 57 is held between its face side parts (part that is positioned at absorber 56 face side of package panel 58) and the rear side parts (part that is positioned at absorber 56 rear side of package panel 58), and only on face side parts and rear side parts, remainder 42 is closed with the state that can move in the part of partly being surrounded by frame shape heat bonding as non-heat bonding particle its part 41 with frame shape heat bonding.
Because the inboard of frame shape heat bonding part 41 surrounds along the package panel 58 that table back of the body direction is used as face side parts and rear side parts, and surrounded by frame shape heat bonding part 41 around it, the particle shape variations in temperature material 42 that therefore is disposed at the non-heat bonding of its inboard can only move in the scope of frame shape heat bonding part 41.Therefore, can suppress moving of variations in temperature material 40, thereby desired variations in temperature takes place.And, because the heat bonding part 41 of variations in temperature material 40 is the frame shape, thus its with integral body is partly compared soft more with the planar heat bonding that carries out heat bonding, also can suppress the hardization that the heat bonding because of the variations in temperature material causes.
Frame shape heat bonding part 41 can only be one also, is provided with a plurality of but be preferably it with less relatively size.In addition, in the latter case, also can be provided with a plurality of quadrangle or circular frame shape heat bonding parts of being, but be preferably the heat bonding part 41 that is provided with the clathrate pattern as shown in the figure.As the clathrate pattern, except by the pattern that constitutes along the hot sticky wiring of fore-and-aft direction with along the hot sticky wiring of width, as shown in figure 22, also can be the inclination grid pattern that only constitutes by hot sticky wiring along the incline direction that intersects with fore-and-aft direction and width.The clathrate pattern also can be shown in Figure 22 (a) each heat bonding is linear like that becomes continuous wire.Shown in Figure 22 (b), the M of heat bonding portion of variations in temperature material and the non-heat bonding N of portion are made of staggered some wire heat bonding line, and the gap that separated of the non-heat bonding N of portion that another hot sticky wiring is passed in arbitrary hot sticky wiring on each crossover location.Shown in Figure 22 (c), the M of heat bonding portion of variations in temperature material and the non-heat bonding N of portion are made of staggered some wire heat bonding line, and the non-heat bonding N of portion of two hot sticky wiring is positioned on each crossover location.At (b) of Figure 22 with under the situation of pattern (c), the heat bonding part 41 of variations in temperature material forms discontinuous shape, can further reduce the hardization that heat bonding part 41 is caused, and is therefore comparatively preferred.
Particularly, be preferably 15～50cN/50mm, be preferably 20～35cN/50mm especially in the rigidity of the part of the heat bonding part with variations in temperature material 40 of diaper.In addition, the rigidity that does not have the heat bonding part partly of variations in temperature material 40 is preferably about 1～25cN/50mm, be preferably about 5～15cN/50mm especially, in normal circumstances, having the part of heat bonding part of variations in temperature material 40 and the poor rigidity that does not have between the part of heat bonding part is preferably about 5～20cN/50mm.
In addition, rigidity is meant the meaning of flexural rigidity (rigidity), according to JIS K7171 (test method of plastics-flexural rigidity), adopts following method to measure.In mensuration, use TENSILON testing machine (the radius of curvature R 2=5.0 of the radius of curvature R 1=5.0 of pressure head terminal part ± 0.1mm, support plate terminal part ± 0.2mm), adorn the flexural rigidity of the product fore-and-aft direction of body 200 in measuring.Removal is to measuring influential elastic telescopic parts from interior dress body 200, and the rectangle that intercepts diaper length direction 80mm and diaper width 50mm again from above-mentioned parts is made test film.50mm in the unit of bending rigid value is the length of the minor face of test film, also is that when test is by the width of the test film of pressure head deflection.Above-mentioned test film is positioned on a pair of support plate, make the length direction of test film towards setting up with the orthogonal direction of each plate, it is circular-arc terminal part that described a pair of support plate has the cross section respectively, and be configured to make the spaced apart and aligned in position of end (upper end) of two terminal parts, the terminal part of pressure head is configured on this test film in the mode of slight contact.At load cell (load cell) is that 5kg (scope is 196cN), speed are that pressure head is descended, and obtains load-deflection curve thus.With the maximum of the bending stress that obtained as bending rigid value (cN/50mm).In addition, under the situation of size less than described print size as the position of determination object, measure with the test film of small dimension, according to the size ratio, passing ratio calculates and converts.
The size of frame shape heat bonding part 41 can suitably determine, but the width 41w of frame line is preferably about 1～5mm, and the area of framework inboard is preferably 100～1000mm 2About.Under the situation with clathrate heat bonding pattern, the length between crossover location (Center Gap) 41d is preferably about 10～40mm, and intersecting angle θ (angle of framework inboard) is preferably 60～120 degree.And then, under the situation of the clathrate pattern that has adopted the hot sticky wiring that constitutes above-mentioned some wire,, and when the gap is made as d, then preferably satisfy the relation of 0.1L≤d≤0.4L if the length of the M of heat bonding portion in each hot sticky wiring is made as L.In addition, the position of the N of heat bonding portion is not limited to each crossover location, as long as can satisfy described relation, the then non-heat bonding N of portion can be positioned at the position beyond each crossover location.
In addition, because variations in temperature material 40 carries out heat bonding by heating, therefore under the situation that the parts that heat with variations in temperature material 40 are arranged, same with above-mentioned embodiment, the fusing point that is preferably variations in temperature material 40 is lower than the fusing point of the parts that heat with variations in temperature material 40.
In addition, at the heat bonding object parts of variations in temperature material 40 is non-woven fabrics or under the situation of the fiber assembly of absorber 56, if the viscosity the during fusion of variations in temperature material 40 is too high, then might be difficult to be impregnated in the fibre gap and makes loss of adhesion; If viscosity is low excessively, then heat bonding partly is difficult to form with the successive pattern in frame shape ground.From this viewpoint, as variations in temperature material 40, preferably under the temperature when fusion (for example 70～130 ℃), its viscosity is 5～80 pools.
As the face side parts and the rear side parts of clamping variations in temperature material 40, be preferably the existing parts that utilize shown in Figure 20 (a), except package panel 58, can also use absorber 56.In addition, though it is not shown, but also can as the double-decker absorber, have face side absorber and being overlapped under the situation of the rear side absorber on its rear side, with the face side parts as the face side absorber, and with the rear side parts as the rear side absorber.
In addition, also can not utilize the common parts that have of diaper, and be provided with special-purpose parts (parts) with as at least one parts in face side parts and the rear side parts.Figure 20 (b) represents this example, is respectively arranged with first, second special-purpose liquid permeability sheet 45,46 with as face side parts and rear side parts.In this case, shown in Figure 23 (a), the face side parts also can be the face side layer 47a of layer in the works that is folded to form by a liquid permeability sheet 47, and the rear side parts also can be the rear side layer 47b with the rear side disposed adjacent of face side layer 47a.Folding times is not particularly limited, except the eighty percent discount shown in Figure 23 (a), and three foldings (cross section is the method for folding of Z word shape) that also can be shown in Figure 23 (b).In the latter case, the intermediate layer 47b of liquid permeability sheet 47 conduct is corresponding to the rear side parts of the variations in temperature material 40 of its upside, and conduct is corresponding to the face side parts of the variations in temperature material 40 of its downside.As liquid permeability sheet 45～47, can use the material same with above-mentioned surface patch 30 or bluff bit 44, or the material same with package panel 58.
Make variations in temperature material 40 be undertaken under the situation of heat bonding by the frame shape, its heat bonding position is preferably in the whole bag portion 57, but also can be the part in the bag portion 57, outside bag portion 57, contain under the situation of variations in temperature material 40, this variations in temperature material also can heat bonding around it on the adjacent parts.
If face side parts and rear side parts exceed the scope that is provided with this variations in temperature material 40, then its size is not particularly limited, if but its size is greater than the scope that is provided with variations in temperature material 40 (whole circumference exposes from the periphery of part with variations in temperature material 40), then the variations in temperature material is difficult to overflow between face side parts and rear side parts, thereby comparatively preferred.
Be bonded in method on face side parts and the rear side parts as variations in temperature material 40 being frame shape underground heat, following method (first method) has been proposed: shown in Figure 24 (a), according to embossed pattern with frame shape parts such as clathrates, with variations in temperature material 42 fusible temperature, there are the processing object parts 400 of state of the variations in temperature material 42 of particle shape (containing powder shaped) to implement heat embossings processing to being in clamping between face side parts 48 and the rear side parts 49, particularly, shown in figure, the surface of one or two roller 340 in office forms the jog of predetermined pattern, and only frame shape heat bonding is partly carried out pressurized, heated.Thus, the position that forms heat bonding part 41 only be the corresponding pressurized, heated of the protuberance pattern zone with knurling rolls 340, is not implemented pressurized, heated as the framework inside part of this exterior domain, and the heat bonding of occurrence temperature variation material 42 not.Because this first method only just can form frame shape heat bonding part 41 by the hot pressing processing of suitable pattern, and is therefore comparatively preferred.
As second method, following method has been proposed, promptly, shown in Figure 24 (b), imitate the coating of the hot-melt adhesive that technical field adopted of absorbent commodity, adopt processing such as nozzle or roller transfer, the melt liquid 41 of variations in temperature material is coated on the opposed faces in any parts in face side parts 48 and the rear side parts 49 by the frame shape, and dispose emboliform variations in temperature material 42 in the inboard of framework 41 at least at it, another parts in the overlapping thereon afterwards above-mentioned parts, with melt liquid 41 as bonding agent, by carrying out bonding to surperficial side component 48 and rear side parts 49 its cooling curing.This second method is combined in the production line of absorbent commodity easily, and it also is preferred embodiment.
In addition, as third party's method, the method that above-mentioned first method and above-mentioned second method are combined has been proposed also shown in Figure 24 (c).Promptly, on a plurality of positions of devices spaced apart on the first direction, with the melt liquid 41 of variations in temperature material along the second direction of intersecting with first direction, be coated on the opposed faces in arbitrary parts in face side parts 48 and the rear side parts 49 with wire, and disposing emboliform variations in temperature material 42 at least between its coating line 41, another parts in the overlapping thereon afterwards above-mentioned parts, melt liquid 41 is glued together face side parts 48 and rear side parts 49 as bonding agent, then, with variations in temperature material 42 fusible temperature, be implemented in of the heat embossing processing of the ground of devices spaced apart on the second direction along the wire of first direction.In that this third party's method is combined under the situation in the production line of absorbent commodity, be preferably the CD direction of first direction as production line, and with second direction as the MD direction.
And then, as design and the diverse cubic method of these first～third party methods, following method has also been proposed, promptly, shown in Figure 24 (d), between face side parts 48 and rear side parts 49, dispose the relative low emboliform low melting point temperature of fusing point with being the frame shape and change material 42b, and dispose the high relatively emboliform high melting temperature of fusing point in the inboard of its framework and change material 42a, under this state, heat, so that low melting point temperature changes material 42b fusion and make high melting temperature change not fusion of material 42a.According to this cubic method, do not need to carry out pattern heating and pattern application (but yet can carry out pattern heating etc.).
Heating unit in the cubic method is not subjected to special qualification, but can use for example above-mentioned hot-air drier shown in Figure 16, Figure 17 (a) and (b) shown in (a) of heating unit, heating unit shown in Figure 180 and Figure 19 shown in heating unit.
The heating and melting of the variations in temperature material 40 in the cubic method not only can be implemented in face side parts and rear side parts are installed on operation on the miscellaneous part, but also can in the suitable stage of thereafter manufacture process, implement, for example under the assembling done state (before the assembling that forms Product Status finishes) of interior dress body 200, perhaps finish the back before become Product Status, to dress body 200 or whole diaper enforcement in whole in assembling.As heating means in this case, can application examples such as above-mentioned Figure 16～heating unit shown in Figure 19.
In the heat bonding part that adopts the first～the above-mentioned cubic method to form, according to conditions such as the quantity of variations in temperature material 40 and heat time heating times, the integrated block or membranaceous variations in temperature material 40 of fusion is the frame shape and is attached to respectively on face side parts and the rear side parts.And,, therefore reduced surface area because the variations in temperature material 40 of heat bonding solidifies again after once fusing forms liquid state.Therefore, reduce the contact area that contacts with urine of variations in temperature material 40, thereby suppressed temperature changing speed, improved persistence.At this, using the low particle shape thing of bulk density is preferred embodiment as variations in temperature material 40.So, can make the different more obvious of quick-acting and late effect property effect.If emboliform variations in temperature material 40 has the particle diameter with degree, then bulk density is low more and surface area is big more, and is high more with the contacting efficiency of urine, therefore can improve temperature changing speed.Especially be dissolved in the urine and produce under the situation of variations in temperature at variations in temperature material 40, this trend is comparatively obvious.
The emboliform variations in temperature material 40 that bulk density is low can use the material same with above-mentioned embodiment, and the bulk density of heat bonding part preferably is higher than the bulk density of the low emboliform variations in temperature material 40 of these bulk densities.
On the other hand, under the situation of utilizing production line to make continuously, preferably, material is supplied with continuous band-shaped, after frame shape heat bonding partly carries out heat bonding, cuts into preliminary dimension along the MD direction with predetermined interval.But in this case, in the manufacturing process of product, in selling the process that destination carries and in the use of user etc., the variations in temperature material might be unrestrained from cutting off the end.Therefore, preferably, shown in Figure 25 (a), to form continuous band-shaped face side parts and rear side parts respectively to the predetermined direction conveyance, after implementing above-mentioned the first～the cubic method simultaneously, on the MD direction, separate face side parts 48 and rear side parts 49 that predetermined space ground cuts off the frame shape heat bonding part 41 that is formed with the variations in temperature material, meanwhile, it being cut off end (with respect to flow direction upstream side and these both sides, downstream of off-position) implements along the heat embossing processing of the wire of CD direction.Label 41E among the figure represents that this embossing adds the Ministry of worker.Because in this case, from off-position to the interval the heat bonding part 41 of adjacent wire variations in temperature material along the CD direction narrow down, therefore can reduce the amount of the particle shape variations in temperature material of being trickled down 42.Especially preferably utilize this heat embossing to add the 41E of the Ministry of worker and above-mentioned first method similarly forms along the heat bonding part of the wire variations in temperature material of CD direction, but face side parts 48 and rear side parts 49 also can carry out bonding with intensity to a certain degree.
In addition, by implementing above-mentioned the first～the cubic method, form under the situation of the heat bonding part 41 of the variations in temperature material of the wire of CD direction on MD direction devices spaced apart ground, shown in Figure 25 (b), preferred adjacent with MD direction one side of cutting off precalculated position CT respectively with opposite side, along the interval D o of the interval D c between the heat bonding part of the wire variations in temperature material of CD direction less than other parts.Because in this case, the interval the heat bonding part 41 from off-position to adjacent wire variations in temperature material along the CD direction narrows down, and therefore also can reduce the amount of the particle shape variations in temperature material of being trickled down 42.
Cut-out in these methods is handled and is carried out in advance prior to the installation on miscellaneous part, in addition, also can carry out cut-out to each product according to the kind of face side parts and rear side parts.
On the other hand, in order to prevent that variations in temperature material 40 is moved, in the time of on as described above with the suitable parts of variations in temperature material heat bonding in absorbent commodity inside, also might temperature descend, thereby make the variations in temperature decrease in efficiency because of the decline of the surface area that changes material makes the contacting efficiency with moisture.Therefore, the variations in temperature material as being arranged in bag portion 57 has also proposed shown in Figure 26 (a), uses the shaping piece 40T by emboliform variations in temperature material 40 compression moldings are obtained.Shaping piece 40T can be a slice, if but excessive then can bring foreign body sensation to the wearer, therefore be preferably as multi-disc or a large amount of small pieces and exist.The shaping piece 40T of these variations in temperature materials is attached on the adjacent component without means such as bonding, and enclosed with the state that can move, but because the size of the shaping piece 40T of these variations in temperature materials is greater than the fibre gap of package panel 58 and the fibre gap of absorber 56, therefore and be sandwiched between above-mentioned these two parts, can move to surfacewise direction and the either direction in the thickness direction hardly.And, because the shaping piece 40T of variations in temperature material is a porous structure, therefore compare with the pure melting and solidification thing of variations in temperature material particle, its surface area (i.e. the area that contacts with moisture) is very big, thereby variations in temperature efficient can descend hardly, even perhaps descend, its degree is also very little.Therefore, the mobile of variations in temperature material 40 is suppressed, and the contacting efficiency of variations in temperature material and moisture also is difficult to descend, so be easy to produce desired variations in temperature.
Face side parts and the rear side parts of the shaping piece 40T of variations in temperature material as clamping, preferably shown in Figure 26 (a), utilize existing parts, except package panel 58, also can use absorber 56.In addition, though do not illustrate, but the rear side absorber that as the double-decker absorber, has the face side absorber and be overlapped in its rear side with situation under, also can be with the face side parts as the face side absorber, and with the rear side parts as the rear side absorber.
In addition, also can not utilize the parts that had in the common diaper, and be provided with special-purpose parts with as at least one parts in face side parts and the rear side parts.Figure 26 (b) represents this example, is respectively arranged with first, second special-purpose liquid permeability sheet 45,46 as face side parts and rear side parts.In this case, shown in Figure 27 (a), the face side parts can be by with the face side layer 47a in the folding layer works that form of a liquid permeability sheet 47, and the rear side parts can be the rear side layer 47b with the rear side disposed adjacent of face side layer 47a.Folding times is not subjected to special qualification, except be folded into eighty percent discount shown in Figure 27 (a), can also be folded into three foldings (cross section is the method for folding of Z word shape) shown in Figure 27 (b).In the latter case, the intermediate layer 47b of liquid permeability sheet 47 becomes the rear side parts corresponding to the shaping piece 40T of the variations in temperature material of its upside, also can become the face side parts corresponding to the shaping piece 40T of the variations in temperature material of its downside.As liquid permeability sheet 45～47, can use the material same, perhaps same material with package panel 58 with above-mentioned surface patch 30 or bluff bit 44.In addition, when being turned back in the end of liquid permeability sheet 47, and when wrapping up, then can prevent from the variations in temperature material 40 of end unrestrained, thereby comparatively preferred in the mode that as above-mentioned package panel 58, has overlapping portion.
The shaping piece 40T of variations in temperature material can only be formed by above-mentioned variations in temperature material 40, is shaped but also can sneak into about other materials below 50%.For example, when sneaking into the superabsorbent polymer particle, absorbed at once by superabsorbent polymer by the urine of variations in temperature material 40 cooling or heating and be stranded in the article surface side, therefore variations in temperature can be passed to the wearer effectively.For the urine that keeps cooling off or heating, also can sneak into hydrophilic fibres such as paper pulp or hydrophilic synthetic fibers.
The scope (along the scope of diaper surface direction) that the shaping piece 40T of variations in temperature material is set is preferably in the whole bag portion 57, but also can be the part in bag portion 57, contain outside bag portion 57 under the situation of variations in temperature material 40, this variations in temperature material 40 also can be provided with the form of shaping piece 40T.
If face side parts and rear side parts exceed the scope of the shaping piece 40T that is provided with this variations in temperature material, then its size is not subjected to special qualification, but, when its size greater than the scope of the shaping piece 40T that is provided with the variations in temperature material when (whole circumference exposes from the periphery of the part of shaping piece 40T with variations in temperature material), the variations in temperature material is difficult to from unrestrained between face side parts and rear side parts, thereby comparatively preferred.
Usually, when filling up interparticle space when particle is compressed, increase compression stress, be supported in the bridge avalanche between the particle and filled up the space, and particle self is deformed, and then make the part of particle destroyed, the new micropartical that forms has been filled up the space, under the plastic deformation effect of particle, make between particle and be close to together powerfully, and contact place at particle, utilization is accompanied by interparticle sliding friction and the heating that produces makes melt surface, and makes and combine between particle and become block, also can not collapse even remove its shape of compression stress.The compression molding sheet 40T of variations in temperature material has utilized such principle to form.In addition, be under the situation of the material that is difficult to be shaped at particle, can use binding agent (bonding agent).The particle of sugar alcohol such as Sorbitol, xylitol is easy to be shaped, and in this regard, is preferred variations in temperature material.
The compression degree of shaping piece 40T can wait suitably according to particle diameter, the density of raw material particle to be determined.As the raw material particle, suitable is granule, be shaped as the many particles of concave-convex surface and surface or the inner low density porous plasmid of particle equal-volume with minute aperture.The degree of the bulk density of raw material particle is preferably suitably determined, but is preferably below 50% of true density (having the space more than 50% (space) with respect to apparent volume).For example, under the situation of Sorbitol, true density is 1.50g/cm 3, therefore, bulk density is preferably 0.75g/cm 3Below, 0.50～0.70g/cm more preferably 3, be preferably 0.55～0.65g/cm especially 3In addition, if particle diameter is very big, then apparent bulk density is less, but surface area is little, thereby under the situation of having used emboliform variations in temperature material 40, its mean diameter (JIS K1474-2007 median diameter) is preferably 200～600 μ m.The bulk density of shaping piece 40T preferably is higher than aforementioned bulk density, and particularly, its bulk density is preferably and is compressed to about 50%～80% of true density, is preferably especially to be compressed to about 55%～70%.Using mean diameter 200～600 μ m and bulk density 0.50～0.70g/cm 3About the situation of sugar alcohol particle under, the bulk density of shaping piece 40T is preferably compression molding to 0.75～1.10g/cm 3About, be preferably compression molding to 0.80～1.00g/cm especially 3About.
The size of shaping piece 40T can suitably be determined, still, if it is thin excessively, then is easy to move; If it is excessive, then can bring foreign body sensation, therefore, preferred thickness is that 0.5～2.0mm and area are 50～1000mm 2Flat piece.In addition, the weight of residual particle shape composition or formed shaping piece 40T are 50mm because of the area that the processing such as bending in the diaper manufacturing process are thereafter cut apart or refinement is present in the article in the process of compression molding 2The weight of tiny following part is preferably, and accounts for below 50% of whole use amounts of above-mentioned variations in temperature material, more preferably below 30%.(that is, thickness 0.5～2.0mm and area 50～1000mm 2The weight of shaping piece 40T be preferably more than 50% with whole weight ratios of the weight of variations in temperature materials, be preferably more than 70% especially.)
On the other hand, absorbent commodity with such shaping piece 40T is compressed into shape by for example tabletting (tableting) etc., and produce the shaping piece 40T of variations in temperature material in advance, also can be when the assembling of article, in the suitable stage this absorbent commodity is located between described parts, but as the manufacturing equipment of absorbent commodity, make the technology of sneaking into not general, therefore exist and to carry out new problems such as exploitation to manufacturing equipment as relatively large sheet.Therefore, in the present invention, also proposed by utilization or application, and the shaping piece of variations in temperature material is sneaked into to the technology between the predetermined components prior art.Promptly, this technology comprises following operation: as shown in figure 28, emboliform variations in temperature material 40p is being located under predetermined the face side parts 48 and the state between the rear side parts 49, by compressing by pair of rolls 340,341, part or all of emboliform variations in temperature material 40p compressed, and formed shaping piece 40T.Can distinguish according to these manufactures, the variations in temperature material that is contained in the product can all be shaping piece 40T, can also make a part of variations in temperature material 40p still keep original particle shape state, perhaps form particle shape 40p by its fragmentation is waited.
All can use the flat roll of surperficial no concave-convex as 340,341, two rollers 340,341 of the pair of rolls that is used for compression molding, but also can use the concavo-convex knurling rolls that on the surface of arbitrary roller or two rollers, have predetermined pattern.Because under the former situation, emboliform whole variations in temperature material 40p once is not compressed yet, and does not therefore wholely form a big shaping piece, shown in Figure 28 (b), many cracks occurs on the whole and forms a plurality of small pieces 40T.In the latter case, utilize embossed pattern can be formed with a plurality of small pieces 40T of regular shape.In addition, area is 50～1000mm 2The small pieces ratio be preferably more than 50%.
As Figure 10 (b) and shown in Figure 27, be under the situation of sheet material at face side parts and rear side parts, before being assembled into these sheet materials in the miscellaneous part, can easily produce product by implementing above-mentioned compression molding operation.In addition, be disposed under the situation about compressing between two sheet materials at particle shape thing with the variations in temperature material, sometimes configuration to compression handle during, particle shape thing moves between sheet spare and skew or spillover has taken place.Such problem is by making sheet surface fluffing or making it fluffy and can access to a certain degree solution, but fibrous materials such as paper pulp by sneaking into a certain amount of staple fibre in the particle shape thing of variations in temperature material or synthetic fibers, the particle shape thing before also can preventing to compress is moved.The blending ratio of fibrous material in this case is comparatively suitable below 50%, is preferably about 10%～30%.Because sugar alcohol such as Sorbitol or xylitol and particle be shaped easily, therefore be difficult to the compression molding material and also can be shaped even mixed, if the combined amount of variations in temperature material is more than 50%, then can sneak into superabsorbent polymer particle up to about 30%.
In addition, use absorber with situation as the arbitrary parts in face side parts and the rear side parts under, special is being that package panel 58 and rear side parts are under the situation of absorber 56 as figure example face side parts, between the surface of absorber 56 or the back side or double-deck absorber, scatter emboliform variations in temperature material, then described absorber 56 and variations in temperature material are wrapped up by package panel 58 and form the packing absorber, then, utilize pair of rolls that this packing absorber is compressed, can easily produce product thus.As mentioned above, in the common manufacture method of absorbent commodity, for fixed packet load 58, utilize pair of rolls to pressurizeing by the absorber 56 after package panel 58 packings, therefore, utilize this pressurization to carry out compression molding, only change pressurized conditions and just can adopt such manufacture method, thereby can very easily use existing equipment.In addition, the distributing method by adjusting emboliform variations in temperature material or the formation method of absorber 56 are also suitably sneaked into superabsorbent polymer or fibrous material easily in shaping piece 40T.
Utilizability on the industry
The present invention can be applied to the widely purposes such as absorbent commodity of pants type, belt or insert type. Particularly except the disposable diaper that toilet training is used, can also be applied to by excremental cooling to come the anti-bacteria breeding and suppress the purposes such as foul smell, resisting cold.

Claims (19)

1. disposable absorbent article, this disposable absorbent article has: the front part of extending from article fore-and-aft direction mediad front side; With the rear section that extends from article fore-and-aft direction mediad rear side;
Also have the absorption portion that absorber is folded between liquid permeability surface patch and the back side lateral plate and forms, it is characterized in that,
Described absorber extends 30%～48% of article total length from article fore-and-aft direction mediad front side,
In described absorber, form marsupial portion, the thickness of described bag portion is 0%～50% of its peripheral region thickness, described bag portion comprises 20% the part that is equivalent to the article total length from article fore-and-aft direction central authorities to the front side, and the distance between the leading section of described bag portion and the leading section of described absorber is 5%～30% of an article total length
In described bag portion, dispose and be used for by contact the variations in temperature material that urine is cooled off or heats with urine.
2. disposable absorbent article according to claim 1, wherein, described variations in temperature material causes the endothermic reaction in the urine so that urine cooling by being dissolved in, and the dissolubility of described variations in temperature material in the 100ml water of 20 ℃ of temperature be more than the 30g,
Described variations in temperature material in the described bag portion quantitatively be 500～1000g/m 2,
The gross area of described bag portion is 2500～8000mm 2,
The thermal change total amount that described variations in temperature material can produce in described absorber is more than the 20cal,
The thermal change of unit are with part of described variations in temperature material is 1cal/cm 2More than.
3. disposable absorbent article according to claim 2, wherein, described absorber contains 120～200g/m 2Hydrophilic fibre and 170～220g/m 2The superabsorbent polymer particle, the content of described superabsorbent polymer is higher than the content of described hydrophilic fibre.
4. disposable absorbent article according to claim 3, wherein, emboliform variations in temperature material is used as described variations in temperature material and places in the described bag portion.
5. disposable absorbent article according to claim 4 wherein, is compared with other zones of described absorber, disposes superabsorbent polymer the most to high-density near the leading section of the described at least bag portion around the described bag portion.
6. disposable absorbent article according to claim 5 wherein, is set to described bag portion overlappingly by at least a portion that contacts the drainage indicator that change color takes place with moisture, and described variations in temperature material has hygroscopicity.
7. disposable absorbent article according to claim 5, wherein, described bag portion is incorporated in article fore-and-aft direction central authorities to 0%～40% the scope that is equivalent to the article total length between the front side, and fore-and-aft direction length is 10%～20% of article total length, and width is 25%～60% of an absorber overall with.
8. disposable absorbent article according to claim 5, wherein, described absorber extends 30%～48% of article total length from article fore-and-aft direction mediad front side, and to 25%～45% of rear side extension product total length;
Described bag portion from article fore-and-aft direction central authorities respectively to 25%～45% of front side extension product total length, and to 20%～40% of rear side extension product total length, and extend along the width of article central authorities, and the width of described bag portion be absorber overall with 25%～60%.
9. disposable absorbent article according to claim 5, wherein, described absorber extends 30%～48% of article total length from article fore-and-aft direction mediad front side, and to 25%～45% of rear side extension product total length;
Described bag portion forms ring-type in the mode of the middle section that surrounds described absorber, the live width of described bag portion is 5%～10% of an article total length, described middle section extends 15%～35% of article total length from article fore-and-aft direction mediad front side, and to 15%～35% of rear side extension product total length, and along the central extension of the width of article, and the width of described middle section is 40%～75% of an absorber overall with.
10. disposable absorbent article according to claim 3, wherein, described variations in temperature material is configured to, and do not contain or contain on a small quantity the particle shape composition that is at least the state that can move freely at in-plane, and the major part of described variations in temperature material is not moved.
11. disposable absorbent article according to claim 10, wherein, packaged of whole described absorber is wrapped in, and described variations in temperature material is thermally bonded at least one side in described absorber and the described package panel.
12. disposable absorbent article according to claim 11, wherein, described variations in temperature material is got up by heat bonding, and the variations in temperature material of this heat bonding is broken into pieces.
13. disposable absorbent article according to claim 10, wherein, described variations in temperature material is held between the face side parts and rear side parts that lay respectively at face side and rear side, and the one portion of hot is adhered on described face side parts and the rear side parts, and its remainder not with described face side parts and rear side parts heat bonding
The heat bonding of described variations in temperature material partly forms the frame shape, and the variations in temperature material of non-heat bonding is enclosed in the part of partly being surrounded by its frame shape heat bonding.
14. disposable absorbent article according to claim 13, wherein, a plurality of described frame shape heat bondings are partly lined up and are formed the clathrate pattern, and this clathrate pattern comprises the heat bonding portion of described variations in temperature material and the hot sticky wiring of the some wire that non-heat bonding portion alternately is arranged in, and is discontinuous in each crossover location at least one hot sticky wiring.
15. disposable absorbent article according to claim 13, wherein, as described variations in temperature material, contain the high relatively high melting temperature of fusing point and change the relative low low melting point temperature variation of material material with fusing point, described frame shape heat bonding part hot stickyly fetches formation by what described low melting point temperature changed material, and enclose described high melting temperature in the part of partly surrounding and change material, with variations in temperature material as described non-heat bonding by described frame shape heat bonding.
16. disposable absorbent article according to claim 3 wherein, will form fibrous variations in temperature material and place in the described bag portion as described variations in temperature material.
17. disposable absorbent article according to claim 3, wherein, the shaping piece that will obtain the compression molding of emboliform variations in temperature material places in the described bag portion as described variations in temperature material.
18. disposable absorbent article according to claim 17, wherein, described shaping piece is by being that 200～600 μ m and bulk density are 0.50～0.70g/cm with mean diameter 3The compression molding of sugar alcohol particle be that bulk density is 0.80～1.10g/cm 3And the porous matter sheet that obtains.
19. disposable absorbent article according to claim 18, wherein, described shaping piece is that thickness is that 0.5～2.0mm, area are 50～1000mm 2Flat piece, and some or a large amount of described flat piece are present in the described bag portion.
CN200980115121.8A 2008-04-30 2009-03-31 Disposable absorptive article Active CN102014831B (en)

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JP2008143573A JP4579313B2 (en) 2008-05-30 2008-05-30 Disposable absorbent article
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JP2008250839A JP4528853B2 (en) 2008-09-29 2008-09-29 Disposable absorbent article
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CN104185463A (en) * 2012-04-25 2014-12-03 株式会社瑞光 Disposable worn article and method for producing same
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CN111343954A (en) * 2017-12-15 2020-06-26 王子控股株式会社 Disposable diaper and method for manufacturing disposable diaper

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