WO2015045145A1 - 吸収体物品及びその製造方法 - Google Patents
吸収体物品及びその製造方法 Download PDFInfo
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- WO2015045145A1 WO2015045145A1 PCT/JP2013/076513 JP2013076513W WO2015045145A1 WO 2015045145 A1 WO2015045145 A1 WO 2015045145A1 JP 2013076513 W JP2013076513 W JP 2013076513W WO 2015045145 A1 WO2015045145 A1 WO 2015045145A1
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- Prior art keywords
- canal
- sheet
- absorbent article
- absorber
- wearer
- Prior art date
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- 0 C*CCC1C(CCC2)C22[C@@]1C2 Chemical compound C*CCC1C(CCC2)C22[C@@]1C2 0.000 description 1
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Classifications
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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
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
- A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
- A61F13/49446—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an impermeable sheet or impermeable part of a sheet placed on or under the top sheet
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- A61F13/00—Bandages or dressings; Absorbent pads
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- A61F13/15577—Apparatus or processes for manufacturing
- A61F13/15585—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers
- A61F13/15593—Apparatus or processes for manufacturing of babies' napkins, e.g. diapers having elastic ribbons fixed thereto; Devices for applying the ribbons
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- A61F13/00—Bandages or dressings; Absorbent pads
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- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
- A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
- A61F13/49413—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
- A61F13/4942—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier the barrier not being integral with the top- or back-sheet
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- 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
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/495—Absorbent articles specially adapted to be worn around the waist, e.g. diapers with faecal cavity
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- 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
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs
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- 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
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/51104—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
- A61F13/51108—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections the top sheet having corrugations or embossments having one axis relatively longer than the other axis, e.g. forming channels or grooves in a longitudinal direction
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- 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
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/515—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers characterised by the interconnection of the topsheet and the backsheet
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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
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F2013/4587—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape with channels or deep spot depressions on the upper surface
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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
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F2013/49042—Form-fitting, self-adjusting disposable diapers with only stretchable part, i.e. part being not elastic but only extensible with not a full recovery of its original length
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- A—HUMAN NECESSITIES
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- 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
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
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- A—HUMAN NECESSITIES
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- 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
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/495—Absorbent articles specially adapted to be worn around the waist, e.g. diapers with faecal cavity
- A61F2013/4951—Absorbent articles specially adapted to be worn around the waist, e.g. diapers with faecal cavity with internal barriers
Definitions
- the present invention relates to an absorbent article and a method for manufacturing the same.
- Absorbent articles include diapers (diapers for children and adults), sanitary napkins, incontinence measures products, body fluids discharged from wearers such as training pants, and superabsorbent resin (hereinafter also referred to as “SAP”). It is an article that is absorbed and processed by an absorber using fluffed wood pulp or the like.
- body fluid is discharged directly from the wearer's discharger onto the surface of the absorber, and is absorbed into the absorber by diffusion on the surface of the absorber and migration from the surface of the absorber to the interior. And processed. Therefore, in order to prevent leakage of body fluid from the absorbent article to the outside thereof, the surface of the absorbent body and the skin of the wearer, so as not to cause a gap between the absorbent article and the wearer's body, In particular, it was necessary to bring the ejector into close contact.
- the wearer's skin is in close contact with the surface of the absorbent body wet with the body fluid. If the wearer's skin is in contact with body fluids for a long time, it not only is uncomfortable for the wearer, but also causes the skin to swell and cause bacterial growth, causing rashes and inflammation. There was a problem of becoming.
- the present inventor has applied body fluid to the absorbent body, in particular, to the crotch portion (the crotch part) that is a position corresponding to the excretor of the wearer.
- the body fluid that has been discharged and the wearer are newly introduced between the surface of the absorbent body and the wearer's skin by introducing a unit that enables the movement and distribution of body fluids before and after the absorbent body. Proposed a method to effectively avoid contact with the skin.
- the unit is proposed as a floating leg gather (FLG).
- Patent Document 2 the unit is proposed as a body fluid movement path.
- Patent Document 3 the unit is proposed as a body fluid receiving canal.
- Each of the units according to these proposals is coupled to a pair of left and right heads and a pair of left and right heads, and has a hanging part that hangs down, and only the pair of left and right heads contact the skin of the wearer. Is common.
- the inventor conducted research on the absorbent article having various units described in Patent Documents 1 to 3, and as a result, the three-dimensional structure of the unit was more stably present when worn, and thus the discharged body fluid I thought that contact with the wearer's skin could be more effectively avoided.
- the present inventor modularized the absorbent article into two main components, a “body contact part” that does not have an absorber and a “body non-contact part” that has an absorber.
- the present inventors have found that a three-dimensional structure can exist more stably and, as a result, contact between the discharged body fluid and the wearer's skin can be more effectively avoided, and the present invention has been completed.
- a canal seat that extends in the front-rear direction and has a pair of left and right heads having stretchability at least in part, and left and right edges joined to the pair of left and right heads, and the center part hangs down when worn.
- a passage for transferring body fluid from the upper side of the canal sheet to the surface of the absorber is provided, A part of the lower surface of the canal sheet and a part of the surface of the absorber are combined,
- the absorber is designed to keep a state separated from the skin of the wearer, When the wearer discharges bodily fluid, the discharged bodily fluid is received on the upper side of the canal sheet, and then transferred from the upper side of the canal sheet to the surface of the absorber through the passage while moving in the front-rear direction.
- Absorbent article (2) The absorbent article according to (1), wherein a part of a center part in the left-right direction on the lower surface of the canal sheet and a part of the surface of the absorber are bonded at a bottom surface coupling part. (3) The absorbent article according to (2), wherein the bottom surface coupling portion extends in the front-rear direction in a region including a crotch portion. (4) A part of the lower surface of the canal sheet near the left and right edges and a part of the surface of the absorber are bonded to each other at the right and left side coupling parts. Absorbent article.
- the fixing member includes a front covering portion that covers the front body and a rear covering portion that covers the back body.
- the absorbent article of the present invention can effectively avoid contact between the discharged body fluid and the skin of the wearer.
- the absorbent article of the present invention when the absorbent article of the present invention is actually worn, the side closer to the wearer's skin is referred to as “upper” and the far side is referred to as “lower”. Further, when the absorbent article of the present invention is actually worn, the side corresponding to the front side of the wearer's body is referred to as “front”, and the side corresponding to the rear side is referred to as “rear”. Moreover, in order to make an understanding easy in each figure, the member which is actually contacting may be shown spaced apart.
- the “absorbent article body” means a leak preventer that is a constituent member of the absorbent article, a top sheet that can be provided on the leak preventer, and other absorbent articles.
- the various members are collectively referred to. Accordingly, when the absorbent article is a diaper, the absorbent article body is referred to as a diaper body.
- the “surface of the absorber” means the surface when the absorber is exposed, and the absorber is a diffusion sheet, an acquisition sheet, a top sheet (surface sheet), a core. When covered with a wrap sheet or the like, it means the surface of the diffusion sheet, acquisition sheet, top sheet (surface sheet), core wrap sheet or the like that is covered.
- FIG. 1 is a schematic diagram illustrating an example of an embodiment of an absorbent article according to the present invention.
- FIG. 1 is also referred to as “Skin-contact Part” (hereinafter also referred to as “S Part”) and “Remote Non-Part” (hereinafter referred to as “R Part”).
- S Part skin-contact Part
- R Part Remote Non-Part
- the child's pants-type diaper is shown in which the S part and the R part are partially joined together.
- FIG. 1A shows an absorbent article that is an aspect of a pants-type diaper, which is cut at waist seal portions (Z and Z ′ in the drawing) on both the left and right sides of the fixing member to apply stress to the absorbent article.
- FIG. 1B is a lateral end view taken along the line IB-IB in FIG. 1A in a tension state.
- FIG. 1C is a lateral end view along the IC-IC line in FIG. 1A when stress is not applied to the absorbent article (in a relaxed state).
- the absorbent article 100 of the present invention shown in FIG. 1 is configured as a pants-type diaper, and basically extends in the front-rear direction and has a pair of left and right heads 10 having stretchability at least in part, The left and right edges of the pair of left and right heads 10 are combined, and the canal member 14 has a canal sheet 12 whose center part hangs downward when worn, and the head 10 of the canal member 14 is worn by the wearer's skin when worn.
- An S part having a fixing member that fixes the canal member 14 to the wearer's body so as to contact the body; a sheet-shaped leak preventer 22 that prevents leakage of bodily fluids, and an upper side of the leak preventer 22 R part which has the absorber 24 which can absorb the body fluid made.
- the pair of left and right heads 10 and the canal sheet 12 are joined at a joining part 78.
- the fixing member As the fixing member, a front covering portion 16 and a rear covering portion 18 located around the waist of the wearer are used when worn.
- the front covering portion 16 and the rear covering portion 18 each have a waist gather 20 extending in the left-right direction in the vicinity of the front end portion or the rear end portion.
- the fixing member has a front covering portion that covers the front body and a rear covering portion that covers the back body.
- the front covering portion 16 and the rear covering portion 18 are joined and integrated by the waist seal portions Z and the waist seal portions Z ′, and cover the periphery of the wearer's abdomen when worn.
- the front covering portion and the rear covering portion are integrated and covers the periphery of the wearer's abdomen when worn.
- the absorbent article of the present invention can be a pants-type diaper.
- the left and right sides of the lower surface of the canal sheet 12 are coupled to the front covering portion 16 and the rear covering portion 18 by a canal portion-front end coupling portion 80 and a canal portion-rear end coupling portion 82, respectively. These connections play a role of hermetically sealing so that a gap is not generated at the front end and the left and right edge portions of the canal portion, and body fluid does not leak.
- the upper surface of the absorber 24 is covered with a surface sheet 26.
- strip-shaped elastic members 28 extending in the front-rear direction are provided on the left and right edges of the leak preventer 22 .
- the outer surface of the elastic member 28 is coupled to the front covering portion 16 and the rear covering portion 18 at an R part-front end coupling portion 86 and an R part-rear end coupling portion 88, respectively. These connections are for integrating the R part and the S part, as long as they do not come off, and sealing is not necessary.
- the elastic member 28 has an effect of preventing the side edge portion of the absorber 24 from hanging down.
- the elastic member 28 does not need to be in direct contact with the wearer's skin.
- the absorbent article 100 is an aspect in which the R part has the elastic member 28, in the present invention, the absorbent article 100 may not have the elastic member.
- a fine opening is provided in the nonwoven fabric constituting the canal sheet 12 as a passage for transferring body fluid from the upper side of the canal sheet 12 to the surface of the absorbent body 24.
- a part of the lower surface of the canal sheet 12 (the lower surface of the bottom surface of the canal part constituted by the canal sheet 12) and a part of the surface of the absorber 24 (the surface of the surface sheet 26) are linear bottom surface coupling portions 84.
- the front part 16 and the rear part 18 of the S part are respectively joined to the front part and the rear part of the R part in a band shape and partially. As a result, the S part and the R part do not come off.
- the canal portion of the S part has a V-shaped or U-shaped shape in a relaxed state, and only a pair of left and right heads 10 having stretchability at least partially.
- the R part having the absorbent body 24 is surely separated from the wearer's skin.
- the S part and R part are each modularized, so that the bottom part of the canal part is pulled downward by the weight of the absorber contained in the R part, and there is little sag and deformation of the entire canal part.
- this is because it becomes easy to maintain a V-shaped or U-shaped three-dimensional structure in the crotch part C, and the three-dimensional structure of the unit exists stably.
- the distance between the surface of the absorber (or a surface sheet covering the same) and the skin of the wearer is 5 mm or more.
- the absorbent body and FLG are integrated, and there is a physical restriction mainly on the site of FLG or the like by the absorbent body.
- the absorbent article of the present invention for example, in the absorbent article 100, only the bottom surface coupling portion 84 is joined to the surface of the absorbent body 24 at the crotch part. Since the three-dimensional structure of the canal part in the S part is less affected by the R part, it can exist stably. For this reason, there is a gap between the side surface of the canal sheet 12 and the surface sheet 26 that covers the absorber 24.
- the body fluid discharged from the wearer is discharged from the opening between the pair of left and right heads 10 to the inside of the canal part and received on the upper side of the canal sheet 12, and then the front and rear direction in the canal part And is transferred from the upper side of the canal sheet 12 to the surface of the absorber 24 through a passage formed by a minute opening.
- the body fluid is received and moved very smoothly because the canal portion exists stably.
- the configuration, size, shape, and the like of the absorber can be designed relatively freely. This facilitates product diversification.
- the length and width of the absorbent body are within the range of the length of the absorbent article in the front-rear direction and the width in the left-right direction, particularly so as to fit the narrow part of the wearer's crotch. Needed to be designed to.
- the R part including the absorbent body is located at a position separated from the wearer's skin, it is not necessary to adapt it to a narrow part of the crotch. For example, the length can be increased in the left-right direction while having a short length corresponding to the crotch.
- the absorbent article is composed of two modules, the S part and the R part, so that the structure itself is simplified, the number and types of members can be reduced, and the weight can be reduced. Cost is low.
- FIG. 2 is a schematic diagram showing an example of the S part in the absorbent article of the present invention which is an aspect of a tape-type diaper.
- FIG. 2A is a developed plan view schematically showing a state (tensed state) in which a stress is applied to the S part and pulled in the front-rear direction and the left-right direction to develop a substantially flat shape.
- FIG. 2 (B) is a lateral end view taken along the line IIB-IIB in FIG. 2 (A) in a tension state.
- FIG. 2C is a lateral end view taken along the line IIC-IIC in FIG. 2A when stress is not applied to the S part (in a relaxed state).
- the S part SP shown in FIG. 2 extends in the front-rear direction and has a pair of left and right heads 10a having at least a part of elasticity, and a pair of left and right heads 10a.
- the canal member 14a having a canal sheet 12a that hangs downward when worn, and the canal member 14a positioned around the wearer's waist when worn so that the head 10a of the canal member 14a contacts the skin of the wearer It has the front coating
- the length of the S part in the front-rear direction is equal to the length (full length) L S of the absorbent article
- the width of the S part in the left-right direction is equal to the width (full width) W S of the absorbent article.
- the size of the absorbent article for example, S size (for a body weight of about 4 to 8 kg), M size (for a body weight of about 6 to 11 kg), L size (for a body weight of about 9 to 14 kg), Big size (weight) It can be set as appropriate according to the Super Big size (for a body weight of about 13 to 25 kg)).
- Detachable members 30 are provided on the left and right sides of the rear covering portion 18a.
- a detachable member (not shown) is provided on the lower surface of the front covering portion 16a so as to be detachable from the detachable member 30.
- These detachable members can be constituted by various surface fasteners, for example.
- adhesive tape, Velcro tape (male) as the detachable members 30 provided on the left and right sides of the rear covering portion 18a, adhesive tape, Velcro tape (male), and as the detachable members provided on the lower surface of the leak preventer 10 of the front covering portion 16a, TLZ (Tape Landing Zone (female) and ZLZ (Zipper Landing Zone) (female) can be used.
- the attachment / detachment member which couple
- the absorber article of the present invention can be made into a tape type diaper.
- the left and right sides of the lower surface of the canal seat 12a are coupled to the front covering portion 16a by the canal portion-front end coupling portion 80a.
- These connections play a role of hermetically sealing so that a gap is not generated at the front end and the left and right edge portions of the canal portion, and body fluid does not leak. Specifically, they are bonded with no gap by an adhesive such as a hot melt adhesive.
- the canal sheet 12a hangs down from the pair of left and right heads 10a.
- a canal bottom surface 32 formed by the vicinity of the center in the left-right direction of the canal seat 12a, a canal left side surface portion 34 formed by a portion hanging from the left head portion 10a of the canal seat 12a, and a right head portion 10a of the canal seat 12a.
- the canal part is formed by the canal right side surface part 36 constituted by the part hanging from the canal.
- the canal portion can be divided into three regions of a front body F, a crotch C, and a back body R in the front-rear direction.
- the canal portion is deepest in the crotch portion C and has a three-dimensional structure having a V-shaped or U-shaped cross section.
- FIG. 3 is a schematic lateral end view showing a canal member having various canal sheets.
- the canal member 14b shown in FIG. 3A has a canal sheet 12b such that the left and right edges of the canal sheet 12b are coupled to a pair of left and right heads 10b so that the cross section is V-shaped or U-shaped. The central part of hangs down.
- the left and right edges of the canal sheet 12b may cover a pair of left and right heads 10b.
- the canal member 14c shown in FIG. 3 (B) has a canal sheet 12c such that the left and right edges of the canal sheet 12c are coupled to a pair of left and right heads 10b so that the cross section is V-shaped or U-shaped.
- 3A is the same as the canal member 10b shown in FIG. 3A, but the left and right end portions of the canal sheet 12c extend further inward from the coupling portion with the head portion 10b. Then it hangs down.
- This extension is normally designed to be relatively short as shown in FIG.
- the extension portion functions as a guide sheet when body fluid is received in the canal portion, and also has a function of being temporarily accommodated to prevent the remaining body fluid from overflowing the canal portion.
- the left and right edge portions of the canal sheet 12c may cover the pair of left and right heads 10b.
- the canal member 14d shown in FIG. 3C has a canal sheet 12d such that the left and right edges of the canal sheet 12d are coupled to a pair of left and right heads 10b so that the cross section is V-shaped or U-shaped.
- 3A is the same as the canal member 10b shown in FIG. 3A, except that the left and right end portions of the canal seat 12d extend further outward from the joint portion with the head portion 10b. Then it hangs down.
- This extension can be designed to be relatively short as shown in FIG.
- This relatively short extension part functions as a liquid guide that collects body fluid on an absorbent body (not shown) when body fluid over the head 10b is generated.
- extension portion is designed to be relatively long, for example, as a portion that covers the side surface of the absorber when the absorber (not shown) is coupled to the canal member 14d, or It acts as a part to be combined with the left and right edges of the absorber.
- the left and right edges of the canal sheet 12d may cover the pair of left and right heads 10b.
- Nonwoven fabrics include, for example, non-woven fabrics made of synthetic fibers (for example, spunbonds such as spunbond (SB) and spunbond / meltblown laminates (SMS, SMMS) made of PE, PP, PET, or composite fibers thereof).
- Non-woven fabrics Spot-bonded non-woven fabrics combined with card webs, hydroentangled (also called spunlace) non-woven fabrics, and air-through non-woven fabrics) can be used alone or in combination.
- Nonwoven fabrics made from the synthetic fibers described above are usually hydrophobic, so that they are fully or partially hydrophilized by a method such as treatment with a surfactant to impart body fluid permeability. It is also possible to use a non-woven fabric.
- the inner surface side of the canal portion constituted by the upper surface of the canal sheet is hydrophilic
- the outer surface side of the canal portion constituted by the lower surface of the canal sheet is hydrophobic
- liquid impervious is suitably used as the canal sheet.
- this nonwoven fabric is used as a canal sheet, the body fluid is smoothly received and moved on the inner surface side of the canal portion. Thereby, it is possible to effectively prevent leakage of the body fluid from the portion other than the body fluid outlet to the outside of the canal portion.
- a laminate in which a hydrophilic nonwoven fabric (for example, rayon nonwoven fabric, cotton nonwoven fabric) or tissue paper is partially laminated on a hydrophobic nonwoven fabric (for example, SMS made of PP) can be mentioned.
- This laminated body is arrange
- a laminate in which a hydrophobic film (for example, a PE film) is laminated on a non-woven fabric that has been subjected to a hydrophilic treatment can be given. In this laminate, the surface of the nonwoven fabric subjected to the hydrophilization treatment is arranged on the inner surface of the canal portion, and the surface of the hydrophobic film is arranged on the outer surface of the canal portion.
- the canal sheet is liquid-impermeable. In this case, the body fluid is received and moved more smoothly.
- FIG. 4 is a schematic diagram showing canal members having various heads.
- 4 (A), 4 (C), 4 (E), 4 (G), and 4 (I) are respectively lateral end views in a relaxed state
- FIG. 4 (B), FIG. 4D, FIG. 4F, FIG. 4H, and FIG. 4J are plan views of the tensioned state.
- 4 (B) includes a canal sheet 12b (for example, PE / PP spunbonded nonwoven fabric, for example, a basis weight of 15 g / m 2 ) and 3 It has a pair of left and right heads 10c formed by arranging and covering filament-like elastic yarns (for example, polyurethane filaments, for example, 600 dtex) 11 in parallel.
- the elastic yarn 11 is disposed over the entire length excluding the vicinity of both front and rear ends from the front body F through the crotch C to the back body R.
- the elastic yarn 11 of the head portion 10c is covered and adhered to the canal sheet 12b in a state where the elastic yarn 11 is stretched by applying stress in the front-rear direction.
- the elastic yarn 11 When the elastic yarn 11 is relaxed by releasing the stress after bonding, the elastic yarn 11 contracts and shortens, whereby the left and right edge portions of the canal sheet 12b and the elastic yarn 11 are integrated to form the head 10c.
- the left and right edges of the canal sheet 12b are coupled to the pair of left and right heads 10c, and the vicinity of the center of the canal sheet 12b hangs down so that the cross section is V-shaped or U-shaped. .
- the canal member 14f shown in FIGS. 4C and 4D includes a canal sheet 12b (for example, PE / PP spunbonded nonwoven fabric, for example, a basis weight of 15 g / m 2 ) and a bulky foamed member 11a (for example, A soft foam sheet made of polyurethane (for example, polyether-based polyurethane) having a pair of left and right heads 10d made of, for example, a width of 15 mm, for example, a thickness of 4 mm, and a canal sheet 12b on the lower surface of the head 10d. The left and right edges are joined. As shown in FIG.
- a canal sheet 12b for example, PE / PP spunbonded nonwoven fabric, for example, a basis weight of 15 g / m 2
- a bulky foamed member 11a for example, A soft foam sheet made of polyurethane (for example, polyether-based polyurethane) having a pair of left and right heads 10d made of, for example, a
- the foamed member 11a is disposed over the entire length excluding the vicinity of both front and rear ends from the front body F through the crotch C to the back body R.
- the foam member 11a of the head portion 10d is covered and adhered to the canal sheet 12b in a state where the foam member 11a is stretched by applying stress in the front-rear direction.
- the foamed member 11a contracts and becomes shorter, and thus the head portion 10d has elasticity.
- the left and right edges of the canal sheet 12b are coupled to the pair of left and right heads 10d, and the vicinity of the center part of the canal sheet 12b hangs down so that the cross section is V-shaped or U-shaped. .
- the canal member 14g shown in FIG. 4A and FIG. 4B is added to the canal member 14e shown in FIG. 4A and FIG.
- a flexible foam sheet made of polyurethane for example, a combination of a width of 25 mm and a thickness of 3 mm, for example. That is, the head portion 10e is composed of a combination of two types of elastic members, the elastic yarn 11 and the foam member 11b. As shown in FIG. 4 (F), the elastic yarn 11 is disposed over the entire length excluding the vicinity of both front and rear ends from the front body F, the crotch C, and the back body R.
- the foam member 11b is disposed at a position including the crotch part C and a part of the front body F and the back body R.
- the foamed member may be disposed over almost the entire length in the same manner as the elastic yarn, but it is cheaper to arrange the foamed member only in a part as shown in FIG.
- the head portion 10e is extremely bulky (for example, 7 to 8 mm in thickness) in a relaxed state by the three elastic yarns 11 and the foamed member 11b covering the side surface to the upper portion. Can do. Thereby, the head 10e becomes bulky, has cushioning properties, and can obtain excellent adhesion between the head 10e and the skin of the wearer's crotch.
- the canal member 14h shown in FIG. 4 (G) and FIG. 4 (H) is the same as the canal member 14g shown in FIG. 4 (E) and FIG. 4 (F), but rubber instead of the foam member 11b.
- a sheet member 11c for example, a silicone rubber sheet, for example, a width of 20 mm, for example, a thickness of 2 mm
- the head portion 10f is composed of a combination of two types of elastic members, the elastic yarn 11 and the rubber sheet 11c.
- the function of the canal member 14h is substantially the same as that of the canal member 14g.
- the canal member 14i shown in FIG. 4 (I) and FIG. 4 (J) is the same as the canal member 14g shown in FIG. 4 (E) and FIG. 4 (F).
- a member 11d for example, a foam sheet made of polypropylene.
- the foaming member 11d covers the elastic yarn 11 to form the head portion 10g, and further covers the canal sheet 12b from the lower side (outside).
- the foam member 11d and the canal sheet 12b are bonded and integrated with an adhesive or the like. As shown in FIG.
- the elastic yarn 11 is disposed over the entire length excluding the vicinity of both front and rear ends from the front body F through the crotch C to the back body R.
- the foaming member 11d is arranged at a position including the crotch part C and a part of the front body F and the back body R.
- the foamed member may be disposed over almost the entire length in the same manner as the elastic yarn. However, it is cheaper to arrange the foamed member only in a part as shown in FIG.
- the head 10g is made of a combination of two types of elastic members, an elastic yarn 11 and a foamed member 11d. Thereby, the head 10g becomes bulky, has cushioning properties, and can obtain excellent adhesion between the head 10g and the skin of the wearer's crotch. Further, the canal sheet 12b is covered with a foam member 11d in the crotch part C. Thereby, in the crotch part C, the rigidity of the canal member 14i is increased, and the canal member 14i is prevented from sagging or deforming due to a load caused by a change in the position of the wearer at the time of wearing, as shown in FIG.
- the V-shaped or U-shaped three-dimensional structure can be easily maintained at all times, and as a result, the body fluid can be received and moved stably. Further, when a liquid-impermeable material (for example, the above-described polypropylene foam sheet) is used as the foaming member 11d, even when a hydrophilic nonwoven fabric is used for the canal sheet 12b, The body fluid movement to the outside can be prevented. As described above, in the canal member 14i, the degree of freedom in product design can be expanded by combining different functional materials.
- a liquid-impermeable material for example, the above-described polypropylene foam sheet
- the longitudinal length L C (full length) of the canal member is shorter than the full length L S of the absorbent article.
- Width (full width) W C in the lateral direction of the Canal member is shorter than the overall width W S of the absorbent article (see FIG. 4 (B)).
- FIG. 5 is a schematic diagram showing various canal members in which the three-dimensional structure of the canal portion is easily held.
- 5 (A), FIG. 5 (C), FIG. 5 (E), FIG. 5 (G) and FIG. 5 (I) are respectively lateral end views in a relaxed state
- FIG. 5 (B) and FIG. FIG. 5D, FIG. 5F, FIG. 5H, and FIG. 5J are plan views of the tensioned state.
- the canal member 14j shown in FIGS. 5A and 5B is the same as the canal member 14b shown in FIG.
- the canal sheet 12b for example, a hydrophilic non-woven fabric (for example, PET)
- a liquid-impermeable film 15 for example, a PE film (for example, a breathable film in which CaCO 3 coexists in an LLDPE resin). For example, a thickness of 20 ⁇ m) is provided on the lower side (outside) of the air-through nonwoven fabric)).
- the liquid-impermeable film 15 is provided so as to cover substantially the entire length of the canal member 14j in the front-rear direction and to cover the bottom surface portion of the canal portion, the left side surface portion, and a part of the right side surface portion in the left-right direction. .
- the canal sheet 12b and the liquid-impermeable film 15 are bonded with an adhesive such as a hot melt adhesive.
- an adhesive such as a hot melt adhesive.
- the canal sheet 12b is covered with the liquid impermeable film 15, the bottom surface portion, the left side surface portion, and a part of the right side surface portion of the canal portion are liquid impermeable (leakproof).
- the canal sheet 12b is reinforced to reduce the sag phenomenon of the canal portion, the deformation is reduced, and the V-shaped or U-shaped three-dimensional structure is easily maintained over almost the entire length.
- the canal member 14k shown in FIGS. 5C and 5D is the same as the canal member 14b shown in FIG. 3A, but the canal sheet 12b (for example, a hydrophilic non-woven fabric (for example, PET) On the lower side (outside) of the air-through nonwoven fabric), a liquid-impermeable foam member 15a (for example, a soft foam sheet made of polyurethane (for example, polyether-based polyurethane), for example, 2 mm in thickness) is provided.
- the canal sheet 12b for example, a hydrophilic non-woven fabric (for example, PET)
- a liquid-impermeable foam member 15a for example, a soft foam sheet made of polyurethane (for example, polyether-based polyurethane), for example, 2 mm in thickness) is provided.
- the liquid-impermeable foam member 15a covers the crotch portion C of the canal member 14k and the front and rear thereof in the front-rear direction, and covers the bottom surface portion, the left side surface portion, and a part of the right side surface portion in the left-right direction. Is provided.
- the canal sheet 12b and the liquid-impermeable foam member 15a are bonded by an adhesive such as a hot melt adhesive.
- the bottom surface portion of the canal portion, the left side surface portion, and a part of the right side surface portion are liquid impermeable (leakproof).
- the canal sheet 12b is reinforced, the canal phenomenon is reduced, deformation is reduced, and the V-shaped or U-shaped three-dimensional structure is easily maintained over the region centering on the crotch C. Deformation is also reduced in the areas before and after that.
- the canal member 141 shown in FIGS. 5E and 5F is the same as the canal member 14b shown in FIG. 3A, but the canal sheet 12b (for example, a hydrophilic non-woven fabric (for example, PET) On the lower side (outside) of the air-through non-woven fabric)), a liquid-impermeable foam member 15b (for example, foamed polystyrene (for example, used as a heat-insulating container used for transporting frozen foods, etc.), rigid urethane foam, for example, A thin part 5 mm and a thickest part 15 mm) are provided.
- the canal sheet 12b for example, a hydrophilic non-woven fabric (for example, PET)
- a liquid-impermeable foam member 15b for example, foamed polystyrene (for example, used as a heat-insulating container used for transporting frozen foods, etc.), rigid urethane foam, for example, A thin part 5 mm and a thickest part 15 mm
- the liquid-impermeable foam member 15b is provided on the crotch part C of the canal member 14k in the front-rear direction and so as to cover the bottom surface portion, the left side surface portion, and a part of the right side surface portion in the left-right direction. ing.
- the canal sheet 12b and the liquid-impermeable foam member 15b are bonded by an adhesive such as a hot melt adhesive.
- the lower flat portion of the liquid-impermeable foam member 15b is bonded in a wide range in the left-right direction with an absorbent body or a surface sheet (not shown) covering the absorbent body and an adhesive such as a hot melt adhesive. Yes.
- the canal sheet 12b is covered with the liquid-impermeable foam member 15b, the bottom surface portion of the canal portion, the left side surface portion, and a part of the right side surface portion are liquid impermeable (leakproof).
- the canal sheet 12b is effectively reinforced, the sag phenomenon of the canal portion is greatly reduced, the deformation is almost eliminated, and the V-shaped or U-shaped three-dimensional structure extends over the region centering on the crotch portion C. It becomes easy to be maintained, and deformations are reduced in the areas before and after.
- the canal member 14m shown in FIGS. 5 (G) and 5 (H) is similar to the canal member 14b shown in FIG. 3 (A), but canal sheet 12b (for example, a hydrophobic non-woven fabric (for example, PP)
- canal sheet 12b for example, a hydrophobic non-woven fabric (for example, PP)
- a liquid-absorbing foam member 15c (for example, a compression-pressed cellulose sponge sheet. For example, a thickness of 1 mm) is provided on the upper side (inside) of the SMSM nonwoven fabric manufactured).
- the liquid-absorbing foam member 15c is provided on the crotch portion C of the canal member 14k in the front-rear direction and so as to cover the bottom surface portion, the left side surface portion, and a part of the right side surface portion of the canal portion in the left-right direction. Yes.
- the canal sheet 12b and the liquid-absorbing foam member 15c are bonded by an adhesive such as a hot melt adhesive.
- an adhesive such as a hot melt adhesive.
- the canal sheet 12b is covered with the liquid-absorbing foam member 15c, the bottom surface portion, the left side surface portion, and a part of the right side surface portion are hydrophilic on the inner surface of the canal portion, and the wettability of body fluids
- the canal sheet 12b is effectively reinforced, the sag phenomenon of the canal part is greatly reduced, the deformation is almost eliminated, and the V-shaped or U-shaped
- the three-dimensional structure is easily maintained over the area centered on the crotch part C, and deformation in the areas before and after the area is reduced.
- the canal member 14n shown in FIG. 5 (I) and FIG. 5 (J) is similar to the canal member 14b shown in FIG. 3 (A), but the canal sheet 12b (for example, a hydrophobic nonwoven fabric (for example, PP)
- the hydrophilic bulky web 15d for example, surface hydrophilic PET fiber web (for example, hollow PET fiber (for example, 7 denier) card web (for example, basis weight 50 g / m 2 )
- the hydrophilic bulky web 15d is filled with about 1/3 of the internal volume of the canal part.
- the hydrophilic bulky web 15d extends across the crotch C of the canal member 14n and a part of the front body F and the back body R in the front-rear direction, and the bottom, left side, and right side of the canal part in the left-right direction. It is provided so that a part may be coat
- the canal sheet 12b and the hydrophilic bulky web 15d are bonded by an adhesive such as a hot melt adhesive. In the canal member 14n, since the canal sheet 12b is covered and filled with the hydrophilic bulky web 15d, the bottom surface portion, the left side surface portion, and a part of the right side surface portion become hydrophilic on the inner surface of the canal portion.
- the S part includes a canal member and a fixing member.
- a fixing member will not be specifically limited if it fixes a canal member to a wearer's body so that the head of a canal member may contact a wearer's skin at the time of wear.
- the material used for the fixing member include a multilayer sheet in which a nonwoven fabric, a nonwoven fabric, and a liquid-impermeable film (for example, a breathable PE film) are laminated.
- at least a part of the fixing member is preferably liquid-impermeable. In this case, even if the body fluid is transmitted to the end of the canal member, it is possible to prevent leakage from leaking to the outside.
- the configuration of the fixing member is not particularly limited, and the fixing member and the canal member, which are separate members, may be combined and integrated to form an S part (separately coupled type), and the fixing member and the canal member are continuous. It may be an S part as a single member (continuous integrated type).
- FIG. 6 is a schematic plan view showing various S parts.
- FIG. 6A and FIG. 6B each show a separately coupled S part.
- the S part shown in FIG. 6 (A) is the same as the S part shown in FIG. 2 (A).
- the S part shown in FIG. 6A is used for an absorbent article in the form of a tape-type diaper.
- the front part 16a and the rear part 18a that function as a fixing member and the canal member 14a are combined and integrated to form an S part.
- Detachable members 30 are provided on the left and right sides of the rear covering portion 18a.
- a detachable member (not shown) is provided on the lower surface of the front covering portion 16a so as to be detachable from the detachable member 30.
- the S part shown in FIG. 6 (B) is the same as the S part of the absorbent article 100 shown in FIG. 1 (however, FIG. 6 (B) is simplified). As described above, the S part shown in FIG. 6B is used for the absorbent article in the form of a pants-type diaper.
- the front part 16 and the rear part 18 that function as fixing members and the canal member 14 are combined and integrated to form an S part.
- the waist seal portions Z and the waist seal portions Z ′ at the left and right edges of the front cover portion 16a and the back cover portion 18a are coupled to each other. This coupling may be performed before or after integration with the canal member 14, or may be performed simultaneously.
- the front covering portion 16a and the rear covering portion 18a can be cut out from one raw material and manufactured.
- FIG. 6C and FIG. 6D each show a continuous and integral S part.
- the SP shown in FIG. 6C is used for an absorbent article in the form of a tape-type diaper.
- the canal member 14o has a head 10h and a canal sheet 12e.
- the canal sheet 12e is configured by a single member (for example, a nonwoven fabric) that is continuous with the front covering portion 16b and the rear covering portion 18b.
- the head portion 10h is provided by coupling a stretchable body to the left and right edge portions of this member.
- Detachable members 30 are provided on the left and right sides of the rear covering portion 18b.
- a detachable member (not shown) is provided on the lower surface of the front covering portion 16b so as to be detachable from the detachable member 30.
- the SP shown in FIG. 6 (D) is used for the absorbent article in the form of a pants-type diaper.
- the canal member 14p has a head 10i and a canal sheet 12f.
- the canal sheet 12f is configured by a single member (for example, non-woven fabric) that is continuous with the front covering portion 16c and the rear covering portion 18c.
- the head portion 10i is provided by connecting a stretchable body to the left and right edge portions of this member.
- the waist seal portions Z and the waist seal portions Z ′ at the left and right edges of the front covering portion 16b and the rear covering portion 18b are coupled to each other.
- FIG. 6E shows a separate-part S-part.
- FIG. 6 (F) shows a plurality of members constituting the S part shown in FIG. 6 (E).
- SP shown in FIG. 6 (E) is used for an absorbent article in the form of a tape-type diaper.
- the SP shown in FIG. 6 (E) includes a canal member 14q having a pair of left and right heads 10j and a canal seat 12g shown in FIG. 6 (F), a left covering portion 38 and a right side functioning as a fixing member. It is comprised by the coating
- the left covering portion 38 is joined to the left side of the canal member 14q
- the right covering portion 40 is joined to the right side of the canal member 14q at the joining portion 90 to be integrated.
- the front body F portion of the left covering portion 38 and the right covering portion 40 can be regarded as a front covering portion
- the rear body R portion can be regarded as a rear covering portion.
- a detachable member 30 is provided on each of the left rear side of the left covering part 38 and the right rear side of the right covering part 40.
- An detachable member (not shown) is provided on the lower surfaces of the left covering portion 38 and the right covering portion 40 so as to be detachable from the detachable member 30.
- the left covering portion 38 and the right covering portion 40 can be manufactured by cutting out from one raw material.
- FIGS. 7 and 8 are schematic diagrams showing various R parts, respectively.
- FIG. 7A is a plan view of the R part.
- FIG. 7B is a lateral end view along the line VIIB-VIIB in FIG.
- the R part shown in FIGS. 7A and 7B includes a sheet-like leak preventer 22a, an absorber 24a, and a surface sheet 26a.
- the absorber 24a is continuously arranged on the liquid impervious leak preventer 22a from the front body F through the crotch C to the rear body R, and the entire upper surface thereof is a liquid permeable surface sheet 26a. Is covered.
- the leak preventer 22a and the surface sheet 26a are coupled at the front, rear, left and right ends so that the absorber 24a does not leak out or protrude.
- the size of the R part shown in FIG. 7A is not particularly limited. Longitudinal length of the R part (total length) L R is larger choice as compared to the total length L S of the S part.
- the total length of the R part L R may be shorter or longer than the total length L S of the S part, also may be shorter or longer than the total length L C of the Canal member.
- Lateral width of the R part (full width) W R is larger choice as compared to the total width W S of the S part.
- Total width of the R part W R may be shorter or longer than the overall width W S of the S part, also may be shorter or longer than the overall width W C of the Canal member.
- the full width W S of the S part may be longer than the full width W C of the canal member, and the full width WR of the R part may be longer than the full width W S of the S part.
- the leak preventer is not particularly limited as long as the leak preventer is a sheet-like leak preventer that prevents body fluid from leaking.
- the material of the leak preventer one that is generally used as a back sheet can be used.
- a resin film such as PE, PP, PET, and EVA
- a body fluid impermeable sheet such as a foamed sheet of the resin
- the body fluid impermeable sheet a material having air permeability such as an air permeable film is also preferably used.
- it can also be used as a multilayer sheet
- a thermal bond nonwoven fabric for example, an air-through type
- a multilayer sheet of the resin film and a sheet-like absorber described later can be used.
- a highly water-resistant nonwoven fabric can also be used. Examples of the highly water-resistant nonwoven fabric include SMS having a water resistance of 100 mmH 2 O or more, and SMS imparted with water resistance by filling the pores of the nonwoven web with microfibrillated cellulose (MFC) or wax. Can be mentioned. In this case, you may use independently and can also be used as a multilayer sheet
- the leak preventer may be composed of a plurality of members.
- the leak preventer has a sheet shape, and the shape is not particularly limited as long as the absorber can be accommodated in the upper part.
- the absorber used in the present invention is not particularly limited as long as it can absorb body fluid, and an absorber used in a conventionally known absorbent article can be used.
- pulverized wood pulp an absorber formed by mixing pulverized wood pulp and granular or powdery SAP, and formed into a mat shape, or a sheet-shaped absorber mainly composed of SAP formed into a thin sheet Etc.
- These absorbers are generally covered with a core wrapping material made of tissue paper, non-woven fabric, perforated film, etc. in order to maintain their shape and at the same time prevent the generation and removal of fine powders generated from pulp and SAP. Is.
- the core wrapping material is also referred to as an “absorber”.
- the sheet-like absorbent body is excellent in form stability, SAP drop-off prevention performance, and the like.
- a super absorbent sheet containing SAP of 50% by mass or more, preferably 60% by mass or more, more preferably 70% by mass or more is preferable.
- the SAP content in the superabsorbent sheet is preferably 95% by mass or less from the viewpoint of the stability of the superabsorbent sheet.
- the highly water-absorbent sheet is an ultrathin sheet-like absorbent body mainly composed of SAP.
- the superabsorbent sheet has a very small thickness because the SAP content is extremely high.
- the thickness of the superabsorbent sheet is preferably 1.5 mm or less, and more preferably 1 mm or less.
- the configuration and the production method are not particularly limited.
- a super absorbent sheet obtained by the Air Laid method can be mentioned.
- the Air Laid method is a method in which pulverized wood pulp and SAP are mixed, a binder is added, and the resultant is formed into a sheet shape to obtain a highly water-absorbent sheet.
- the highly water-absorbent sheet obtained by this method for example, NOVATHIN (registered trademark) manufactured by Rayonier, USA, B-SAP manufactured by Oji Kinocross, etc. are known.
- distribution slurry on body fluid permeable sheets, such as a nonwoven fabric is also mentioned.
- the SAP dispersion slurry is obtained by dispersing SAP and microfibrillated cellulose (MFC) in a mixed solvent of water and ethanol.
- MFC microfibrillated cellulose
- MegaThin registered trademark manufactured by Japan Absorbent Technology Laboratory is known, for example.
- the fibrous SAP is a PET (polyethylene terephthalate) fiber.
- examples thereof include a superabsorbent sheet obtained by a method of mixing and forming a web, and an SAP sheet in which the upper and lower sides of the SAP layer are sandwiched between tissues.
- At least one layer of the absorber is disposed on the top of the leak preventer. That is, the absorber may be a single layer or two or more layers (multiple layers). The absorber can also be arranged in a folded state.
- the R part may further have a surface sheet.
- a surface sheet those used as the top sheet of conventional absorbent products can be used, but skin care performance such as antibacterial properties may be imparted.
- a special skin contact sheet as proposed by the present inventors in the pamphlet of International Publication No. 02/00154 can also be used.
- FIG. 7C is a plan view of an R part according to another aspect.
- FIG. 7D is a vertical end view taken along the VIID-VIID line in FIG.
- the R part shown in FIGS. 7C and 7D is the same as the R part shown in FIGS. 7A and 7B, but instead of the absorber 24a, the front part and It differs in having two absorbers 24b present at the rear.
- the leak preventer 22a and the surface sheet 26a are coupled to each other at the portion where the absorber 24b is not present at the center in the front-rear direction.
- the R part of this aspect has an advantage that it can be easily folded back and forth with the central part without the absorber as a fold line.
- FIG. 7E is a plan view of the R part of still another embodiment.
- FIG. 7F is a lateral end view taken along line VIIF-VIIF in FIG.
- the R part shown in FIGS. 7 (E) and 7 (F) is the same as the R part shown in FIGS. 7 (A) and 7 (B), but on the left and right sides instead of the absorber 24a. It differs in having two elongated absorbers 24c present.
- the leak preventer 22a and the surface sheet 26a are joined to each other in the portion where the absorber 24c at the center in the left-right direction does not exist.
- the R part of this aspect has an advantage that it is easy to fold right and left with a central part without an absorber as a fold line.
- FIG. 7G is a plan view of the R part of still another aspect.
- FIG. 7H is a lateral end view taken along line VIIH-VIIH in FIG.
- the R part shown in FIG. 7 (G) and FIG. 7 (H) is the same as the R part shown in FIG. 7 (A) and FIG. 7 (B). It is different in that it has an absorbent body 24d in which the part is folded upward, the central part is one layer, and the left and right sides are two layers.
- the R part of this aspect has an advantage that it is easy to fold right and left with the central portion where the absorber is one layer as a fold line.
- FIG. 7I is a plan view of the R part of still another embodiment.
- FIG. 7 (J) is a lateral end view along the line VIIJ-VIIJ in FIG. 7 (I).
- the R part shown in FIG. 7 (I) and FIG. 7 (J) has a sheet-like leak preventer 22b, two absorbers 24e, and a surface sheet 26b.
- the sheet-like leak preventer 22b has a relatively short length in the front-rear direction (for example, 100 to 150 mm), and exists only in the crotch part C.
- the sheet-shaped leak preventer 22b has a relatively long width in the left-right direction (for example, about 200 mm), and extends in a wing shape on the left and right.
- Each of the two absorbers 24e is, for example, rectangular (for example, 100 mm in length and 50 mm in width), and is disposed on both the left and right sides of the leak preventer 22b.
- the entire upper surface of the absorber 24e is a liquid-permeable surface.
- the sheet 26b is covered, and further, the leak preventer 22b whose left and right edges are folded upward is covered on the upper side. There is no absorber at the center of the leak preventer 22b in the width direction. Leak preventer 22b and surface sheet 26b are joined at the front and rear ends.
- the leak preventer 22b covers the lower surface, the left surface, and the upper surface of the left absorbent body 24e, and the folded portions are joined to each other on the front side and the rear side of the left absorbent body 24e at the edge without the absorbent body 24e.
- a bag-like capsule in which the absorber 24e is disposed is formed.
- the leak preventer 22b covers the three surfaces of the lower surface, the right surface, and the upper surface of the right absorbent body 24e, and is a folded portion at the front and rear sides of the right absorbent body 24e at the edge without the absorbent body 24e. They are joined together to form a bag-like capsule in which the absorber 24e is disposed.
- the left and right capsules have opposing openings. This opening serves as an inlet for body fluid transferred from the canal.
- FIG. 8A is a developed plan view of a state (tensed state) in which a stress is applied to the R part of still another aspect and pulled in the front-rear direction and the left-right direction so as to be substantially flat.
- FIG. 8B is a lateral end view taken along line VIIIB-VIIIB in FIG.
- the R part shown in FIGS. 8A and 8B includes a sheet-like leak preventer 22a, an absorber 24f, and a surface sheet 26a.
- the absorbent body 24f has a shape in which the central part in the front-rear direction is recessed, and is continuously arranged on the liquid-impervious leak preventer 22a from the front body F through the crotch C to the back body R.
- the entire upper surface is covered with a liquid-permeable surface sheet 26a.
- the R part of this aspect has an advantage that it can be easily folded back and forth with the central portion where the width in the left-right direction of the absorber is narrowed as a fold line.
- the leak preventer 22a and the surface sheet 26a are coupled at the front, rear, left and right ends so that the absorber 24a does not leak out or protrude.
- two filamentary expansion / contraction members 28a are connected to the leak preventer 22a.
- the elastic member 28a is not for the purpose of preventing the side leakage of bodily fluids in close contact with the wearer's body, like the inner leg gather (ILG) and the outer leg gather (OLG) in the conventional absorbent article.
- the absorbent article of this invention By acting to shorten the length in the front-rear direction, it deforms into a convex shape (C-shape) on the lower side, making it easier to stand up, and the contact between the surface of the R part and the curved surface of the bottom part of the canal part This is to increase the area.
- the expansion-contraction member which has the effect
- the leak preventer has a convex shape in the lower side at least in the crotch portion when worn.
- FIG. 8C is a developed plan view of a state (tensed state) in which a stress is applied to the R part of still another aspect and pulled in the front-rear direction and the left-right direction so as to be substantially flat.
- FIG. 8D is a lateral end view along the line VIIID-VIIID in FIG.
- the R part shown in FIG. 8C and FIG. 8D is the same as the R part shown in FIG. 8A and FIG. 8B, but at the front and rear ends of the surface sheet 26a.
- Each has a detachable member 30a for detachably coupling an S part (not shown) and an R part, and extends in the front-rear direction at the center of the crotch part C of the surface sheet 26a in the front-rear direction.
- the detachable member 30a can be the same as the detachable member 30.
- it can be composed of various surface fasteners.
- TLZ female
- ZLZ male
- the adhesive member 42 is preferably covered with a release paper before use.
- the R part shown in FIG. 8C and FIG. 8D can be attached to and detached from the S part by the action of the attaching / detaching member 30a and the adhesive member 42.
- the S part and the R part are detachable.
- FIG. 8E is a development plan view of a state (tensed state) in which a stress is applied to the R part of another aspect and pulled in the front-rear direction and the left-right direction so as to be substantially flat.
- FIG. 8F is a vertical end view taken along line VIIIF-VIIIF in FIG.
- the R part shown in FIG. 8 (E) and FIG. 8 (F) is the same as the R part shown in FIG. 8 (A) and FIG. 8 (B), but the leak preventer 22c is on the upper side at the front and rear ends.
- the left and right edges of the folded portion are combined with the surface sheet 26a to form the front pocket portion 44 and the rear pocket portion 46.
- the front pocket portion 44 and the rear pocket portion 46 can more effectively suppress the occurrence of front-rear leakage.
- FIGS. 7 (A) and 7 (B) are schematic lateral end views of the crotch portion C showing various absorbent articles of the present invention.
- Absorbent article 100a shown in FIG. 9 (A) has an S part having canal member 14b shown in FIG. 3 (A) and an R part shown in FIGS. 7 (A) and 7 (B). .
- the lower surface of the S-part canal sheet 12b and the surface of the surface sheet 26a covering the R-part absorber 24a are joined at the center in the left-right direction by a bottom face joining portion 84a extending in the front-rear direction.
- the bottom surface coupling portion 84a has a linear shape with a short width in the left-right direction, but may have a strip shape with a large width in the left-right direction.
- the bottom surface coupling portion 84a may exist only in the crotch part C, or may extend from the crotch part C to the front body F and / or the back body R. It is one of the preferable embodiments of the absorbent article of the present invention that the bottom surface coupling portion extends in the front-rear direction in the region including the crotch portion C.
- Absorbent article 100b shown in FIG. 9 (B) has an S part having canal member 14b shown in FIG. 3 (A) and an R part shown in FIGS. 7 (E) and 7 (F). .
- the lower surface of the S-part canal sheet 12b and the surface of the surface sheet 26a covering the R-part absorber 24c extend linearly in the front-rear direction at the center in the left-right direction (where the absorber 24c does not exist).
- the bottom surface coupling portion 84b is coupled.
- the bottom surface coupling portion 84b has a linear shape with a short width in the left-right direction, but may have a strip shape with a large width in the left-right direction.
- the bottom surface coupling portion 84b may exist only in the crotch portion C, or may extend from the crotch portion C to the front body F and / or the back body R.
- the absorbent article 100c shown in FIG. 9 (C) is the same as the absorbent article 100b shown in FIG. 9 (B), but the surface sheet 26c is folded downward at the left and right edges, and the elastic member 28b is attached. It is covered. Since the expansion / contraction member 28b has the same function as the expansion / contraction member 28a described above, the bottom surface coupling portion 84c can be easily formed into a strip shape having a long width in the left-right direction.
- the bottom surface coupling portion 84c has a strip shape with a long width in the left-right direction, but may be a line shape with a short width in the left-right direction.
- the bottom surface coupling portion 84c may exist only in the crotch portion C, or may extend from the crotch portion C to the front body F and / or the back body R.
- the absorbent article 100d shown in FIG. 10 (A) has an S part having the canal member 14b shown in FIG. 3 (A) and an R part shown in FIGS. 8 (A) and 8 (B). .
- the bottom surface of the canal sheet 12b of the S part and the surface of the surface sheet 26a covering the absorber 24a of the R part are a bottom surface coupling portion 84d extending in the front-rear direction and a side surface coupling at the center portion in the left-right direction and the left and right sides thereof.
- the two parts 92 are connected.
- the R part is deformed and raised to a convex shape (C shape) on the lower side so as to fit the V shape or U shape of the canal portion.
- C shape convex shape
- the left and right side coupling portions are coupled.
- the side coupling portion 92 may exist only in the crotch portion C, or may extend from the crotch portion C to the front body F and / or the back body R. It is one of the preferable embodiments of the absorbent article of the present invention that the side surface coupling portion extends in the front-rear direction in the region including the crotch portion C.
- the lower surface of the S-part canal sheet 12b and the surface of the surface sheet 26a covering the R-part absorber 24a are joined at three locations. It may be bonded continuously over
- the absorbent article having such a side surface coupling portion is likely to form a convex shape on the lower side when worn, and in particular, the convex shape on the lower side becomes large at the crotch part.
- the absorbent article 100e shown in FIG. 10B is the same as the absorbent article 100c shown in FIG. 9C, but covers the lower surface of the S-part canal sheet 12b and the R-part absorbent 24c.
- the surface sheet 26c is different from the surface sheet 26c in that it is coupled at three locations of a bottom surface coupling portion 84e and a side surface coupling portion 92a extending in the front-rear direction at the central portion in the left-right direction and both left and right sides thereof.
- the effect of combining at three positions is the same as that of the absorbent article 100d shown in FIG. In the absorbent article 100e shown in FIG.
- FIG. 10 (B) since there is no absorber in the central part in the left-right direction, it is easy to bend right and left, so the cross-sectional shape of the canal part is shown in FIG. 10 (A).
- the absorbent article 100d shown is closer to a V-shape as compared to a shape close to a U-shape.
- the lower surface of the S-part canal sheet 12b and the surface of the surface sheet 26c covering the R-part absorber 24c are bonded at three locations. It may be bonded continuously over
- the absorbent article 100f shown in FIG. 10C has an S part having the canal member 14b shown in FIG. 3A and an R part having capsules on the left and right sides.
- the leak preventer 22d there is an absorber 24g extending over almost the entire region in the left-right direction, a diffusion sheet 48 covering the absorber 24g, and on both the left and right sides of the diffusion sheet 48.
- Two absorbers 24h are provided.
- the sheet-like leak preventer 22d has a relatively short length in the front-rear direction (for example, about 120 mm), and is present only in the crotch part C.
- the sheet-shaped leak preventer 22d has a relatively long width in the left-right direction (for example, about 300 mm) and extends in a wing shape on the left and right.
- As the two absorbers 24h for example, rectangular ones (for example, a length of 100 mm and a width of 50 mm) are used.
- the leak preventer 22d is folded upward at the left and right edges, and the folded portions are joined at the front end and the rear end (both not shown) to form a bag-like capsule.
- the left and right capsules have opposing openings. This opening serves as an inlet for body fluid transferred from the canal.
- the diffusion sheet 48 is not particularly limited as long as it has a flow path that allows urine to move, but it is preferable that the diffusion sheet 48 does not have body fluid absorbability or body fluid retention because the urine moves quickly.
- seat member open hole uneven
- the lower surface of the S-part canal sheet 12b and the surface of the diffusion sheet 48 that covers the R-part absorber 24g are coupled to each other by a bottom surface coupling portion 84f extending in the front-rear direction at the center in the left-right direction.
- the lower surface of the S-part canal sheet 12b and the end of the folded portion of the R-part leakage preventer 22d are coupled to each other by a S-part-R-part side edge coupling portion 94 extending in the front-rear direction on both the left and right sides. ing.
- the S part and the R part are combined and integrated at three places in FIG.
- the front and rear ends of the R part are partially bonded to the lower surface (outer surface) of the canal sheet 12b with an adhesive such as a hot melt adhesive.
- the capsule-type absorbent article shown in FIG. 10 (C) can be accommodated in the crotch part C so as to completely cover the excretion part of the wearer. Therefore, for example, it is suitably used for incontinence products for women and sanitary napkins for night.
- the fixing member e.g., the front cover portion and / or rear S Part It can be bonded to the covering portion with an adhesive. If the total length L R of the R part is less than the total length L S of the S part, bonding the front and / or rear end of the R part, the fixing member of the S part (e.g., the front cover portion and / or the rear cover section) It can be bound by an agent.
- the mode of coupling is not particularly limited, and may be three locations, the left and right edges and the center, or may be spot-coupled at regular intervals, or the entire surface may be coupled in a strip shape. . In this case, there is no need for liquid-tight bonding. Above all, if the total length L R of the R part is less than the total length L C of the Canal member, for example, if only the crotch portion C, such as R-part is present, the front and rear ends of the R part, Canal sheet, They can be combined partially in the left-right direction or over the entire area.
- a passage for transferring body fluid from the upper side of the canal sheet to the surface of the absorber is provided.
- the passage is, for example, a minute opening of the canal sheet itself (for example, when the canal sheet is made of a liquid-permeable nonwoven fabric, pores of the liquid-permeable nonwoven fabric), a slit provided in the canal sheet, the canal sheet The notch provided in is mentioned.
- Manufacturing method of absorbent article of the present invention is not particularly limited, but a step of forming an S part and an R part respectively, and then a step of combining the S part and the R part It can manufacture by performing. As described above, by modularizing the S part and the R part, the manufacturing process is simplified. Therefore, the investment cost can be suppressed and the productivity is excellent.
- FIG. 11 is a schematic diagram showing another example of the embodiment of the absorbent article according to the present invention.
- FIG. 11A shows an absorbent article that is an aspect of a pants-type diaper, by cutting waist absorbent portions (Z and Z ′ in the figure) on the left and right sides of the waist gather to apply stress to the absorbent article. It is the plane development view which showed typically the state which pulled and developed in the front-back direction and the left-right direction, and made it almost flat.
- FIG. 11B is a lateral end view taken along line XIB-XIB in FIG. 11A in the above state.
- FIG. 11C is a lateral end view taken along the line XIC-XIC in FIG. 11A when stress is not applied to the absorbent article (in a relaxed state).
- the absorbent article 101 shown in FIG. 11 is the same as the absorbent article 100 of the present invention shown in FIG. 1, but various slits are provided as passages for transferring body fluid from the upper side of the canal sheet to the surface of the absorbent body. It differs in that it is provided.
- the absorbent article 100 of the present invention shown in FIG. 1 will be described in detail including the omitted parts.
- the material of each member is an example.
- the absorbent article 101 shown in FIG. 11 is configured as a children's pants-type diaper (super big size (for a body weight of about 13 to 25 kg)).
- the size of each member of the absorbent article 101 described below is an example in the case of the Super Big size, and can be changed as appropriate. Of course, if the size of the absorbent article is different, The size of the member also changes.
- item 101 demonstrated below is a thing of a tension
- the S part SP has a total length of 690 mm and a total width of 360 mm (200 mm in the relaxed state).
- the canal sheet member has a total length of 550 mm and a total width of 140 mm.
- the width of the folded part of the canal sheet 12 is 220 mm.
- the width of the pair of left and right heads 10 is 20 mm.
- the front covering portion 16 has a total length of 130 mm.
- the rear covering portion 18 has a total length of 160 mm.
- the R part RP has a total length of 550 mm and a total width of 190 mm.
- the absorber 24 has an hourglass shape with a narrow width at the crotch part C, and has a total length of 490 mm, a total width of 180 mm at maximum and 90 mm at minimum.
- the S part is a separate binding type shown in FIG.
- the lower surface of the front and rear end portions of the canal member 14 and the upper surfaces of the front covering portion 16 and the rear covering portion 18 are banded with hot melt adhesive at the canal portion-front end coupling portion 80 and the canal portion-rear end coupling portion 82, respectively. They are continuously connected and integrated so as to have a leak-proof property.
- the canal member 14 is composed of a pair of left and right heads 10 (two polyurethane filaments are stretched and their upper and lower surfaces are bonded to a nonwoven fabric as a support by an adhesive) and a pair of left and right heads. And a hydrophobic canal sheet 12 (SMMS nonwoven fabric having a basis weight of 15 g / m 2 ) that connects the ten pieces. Since the canal sheet 12 is hydrophobic, the pores do not function as a passage for transferring body fluid to the surface of the absorber.
- SMMS nonwoven fabric having a basis weight of 15 g / m 2
- the front body F of the canal seat 12 is provided with a C-shaped front slit 50 that traverses from side to side, and a fine linear front slit group 52 that extends in the front-rear direction and exists behind it. .
- the front slit 50 and the front slit group 52 serve as a passage (front outlet) for transferring body fluid from the canal part of the S part to the absorber 24 of the R part.
- a C-shaped rear slit 54 that crosses right and left, and a group of fine linear rear slits that extend in the front-rear direction that exist in front of the C-shaped rear slit 54 56 are provided.
- the rear slit 54 and the rear slit group 56 serve as a passage (rear outlet) for transferring body fluid from the canal part of the S part to the absorber 24 of the R part.
- the front covering portion 16 and the rear covering portion 18 are each composed of two non-woven fabrics (a PP SMMS non-woven fabric having a basis weight of 13 g / m 2 ). Near the front end of the front covering portion 16 and near the rear end of the rear covering portion 18, waist gathers 20 (three rubber threads having a thickness of 0.35 mm and a width of 1 mm are disposed at 12 mm intervals over the entire width, respectively. It is configured by being sandwiched between two non-woven fabrics constituting the portion 16 and the rear covering portion 18).
- Shearing gathers 21 (three 400 dtex polyurethane filaments are arranged at intervals of 20 mm on the rear side of the waist gathers 20 of the front covering part 16 and on the front side of the waist gathers 20 of the rear covering part 18, respectively. It is configured by being sandwiched between two non-woven fabrics constituting the covering portion 18).
- Lumbar seal portions Z and Z ′ are provided at the left and right edge portions of the front cover portion 16 and the back cover portion 18, and the waist seal portions Z and the waist seal portions Z ′ are joined together to form a pants-type diaper. Form.
- the front end of the canal member 14 is disposed at a position 70 mm rearward from the front end of the front covering portion 16, and the front end of the canal member 14 and its peripheral left and right edges and the lower surface of the front covering portion 16 are hot-melted. It is spot-bonded with an adhesive, and is arranged such that the rear end of the canal member 14 is positioned 70 mm forward from the rear end of the rear covering portion 18. The edge and the lower surface of the rear covering portion 16 are spot-bonded with a hot melt adhesive.
- the absorber 24 is disposed on the upper side of the sheet-like leak preventer 22 and the upper surface thereof is covered with a liquid-permeable surface sheet 26.
- the leak preventer 22 and the surface sheet 26 are bonded by a hot melt adhesive at both left and right edges so that the absorber 24 does not leak.
- the leak preventer 22 is a laminate of a PE breathable film having a thickness of 18 ⁇ m and a PP / PE spunbonded nonwoven fabric having a basis weight of 12 g / m 2 .
- the surface sheet 26 is a PE / PET air-through nonwoven fabric having a basis weight of 20 g / m 2 .
- the left and right edges of the leak preventer 22 are provided with elastic members 28 (four polyurethane filaments arranged in parallel (width 30 mm) and covered with a nonwoven fabric).
- the lower end on the inner side in the left-right direction of the elastic member 28 is coupled to the lower surface of the leak preventer 22 and is arranged in a folded state on the upper surface of the surface sheet 26.
- the elastic member 28 is for preventing the side edge portion of the absorbent body 24 from hanging down, and the elastic member 28 itself does not need to be in direct contact with the wearer's skin.
- a part of the lower surface of the canal sheet 12 (the lower surface of the bottom surface of the canal part constituted by the canal sheet 12) and the absorber 24.
- a part of the surface (surface of the surface sheet 26) is bonded by a hot melt adhesive at a linear bottom surface connecting portion 84 (length: 230 mm, width: 5 mm) extending from the crotch C to the front body F. Yes.
- the lower surfaces of the front covering portion 16 and the rear covering portion 18 of the S part and the expanded and contracting member 28 of the R part are respectively an R part-front end coupling portion 86 and an R part-rear end coupling portion 88.
- the front and rear coupling between the S part and the R part also serves to reinforce the coupling at the bottom surface coupling portion 84.
- the canal member 14 of the S part has a narrower gap between the pair of left and right heads 10, and the canal formed by the canal sheet 12 becomes deeper and V-shaped. It exhibits a shape of a mold or U shape.
- FIG. 12 is a schematic view showing still another example of the embodiment of the absorbent article according to the present invention.
- FIG. 12 (A) is a plan development view schematically showing a state in which the absorbent article, which is an aspect of a tape-type diaper, is stressed and pulled in the front-rear direction and the left-right direction to be substantially flat.
- FIG. 12B is a lateral end view along the line XIIB-XIIB in FIG. 12A in the above state.
- FIG. 12 (C) is a lateral end view taken along line XIIC-XIIC in FIG. 12 (A) when stress is not applied to the absorbent article (relaxed state).
- the material of each member is an example.
- the absorbent article 102 shown in FIG. 12 is configured as a children's tape-type diaper (M size (for a weight of about 6 to 11 kg)).
- M size for a weight of about 6 to 11 kg
- the size of each member of the absorbent article 102 described below is an example in the case of an M size, and can be changed as appropriate. If the size of the absorbent article is different, naturally each member The size of will also change.
- item 102 demonstrated below is a thing of a tension
- Absorbent article 102 extends in the front-rear direction and has a pair of left and right heads 10k having stretchability at least in part, and a pair of left and right heads 10k with left and right edges coupled to each other so that the center part is the lower side when worn.
- a fixing member for fixing the canal member 14r to the wearer's body so that the head 10k of the canal member 14r contacts the wearer's skin at the time of wearing
- a body contact part SP having a functioning front covering portion 16b and rear covering portion 18b; a sheet-like leak preventer 22e that prevents leakage of bodily fluids, and a body fluid disposed above the leak preventer 22e
- a body non-contact part RP having an absorber 24i.
- the S part SP has a total length of 450 mm and a total width of 340 mm.
- the canal sheet member has a total length of 370 mm and a total width of 120 mm.
- the width of the pair of left and right heads 10k is 15 mm.
- the front covering portion 16b has a total length of 70 mm.
- the rear covering portion 18b has a total length of 90 mm.
- the R part RP has a total length of 370 mm and a total width of 140 mm.
- the absorber 24i has a rectangular shape with a total length of 340 mm and a total width of 110 mm.
- the lower surface of the distal end portion of the inner extension portion 58 (length 40 mm in the left-right direction) where the polyurethane filaments of the pair of left and right head portions 10k do not exist and the canal sheet 12h are joined at the joining portion 78a.
- the S part is a separate binding type shown in FIG.
- the lower surface of the front and rear end portions of the canal member 14r (more specifically, the lower surface of the portion outside the coupling portion 78a of the inner extension portion 58 of the pair of left and right heads 10k) and the upper surfaces of the front covering portion 16b and the rear covering portion 18b.
- a hot melt adhesive so as to have a leak-proof property.
- the canal member 14r is composed of a pair of left and right heads 10k (three polyurethane filaments are stretched and their upper and lower surfaces are bonded to a nonwoven fabric as a support by an adhesive) and a pair of left and right heads.
- Liquid-permeable canal sheet 12h PE / PP spunbonded nonwoven fabric subjected to hydrophilization with a basis weight of 15 g / m 2 ) that connects 10k.
- the pores of the liquid permeable canal sheet 12h function as a passage for transferring body fluid from the upper side of the canal sheet 12h to the surface of the absorber 24i.
- Each of the front covering portion 16b and the rear covering portion 18b is composed of one non-woven fabric (SMSM non-woven fabric made of PP having a basis weight of 15 g / m 2 ).
- Detachable members 30b (Velcro tape (male)) are provided on the left and right sides of the rear covering portion 18b.
- a detachable member (not shown) is provided on the lower surface of the front covering portion 16b so as to be detachable from the detachable member 30b.
- the absorbent article 102 is a tape-type diaper.
- the front end of the canal member 14r is disposed at a position 30 mm rearward from the front end of the front covering portion 16b, and the front end of the canal member 14r and its peripheral left and right edges and the lower surface of the front covering portion 16b are hot-melted.
- the rear end of the canal member 14r is located at a position 50 mm in front of the rear end of the rear covering portion 18b, and is joined with an adhesive.
- the lower surface of the covering portion 16b is bonded with a hot melt adhesive.
- the absorber 24i is disposed on the upper side of the sheet-like leak preventer 22e, and the upper surface thereof is covered with a liquid-permeable core wrap sheet 27.
- the leak preventer 22 and the core wrap sheet 27 are joined to each other by hot melt adhesive at both the left and right edges so that the absorber 24 i does not leak.
- the leak preventer 22e is a laminate of a PE breathable film having a thickness of 18 ⁇ m and a PP / PE spunbonded nonwoven fabric having a basis weight of 12 g / m 2 .
- the core wrap sheet 27 is a PP spunbonded nonwoven fabric subjected to surface hydrophilization treatment with a basis weight of 13 g / m 2 .
- a part of the lower surface of the canal sheet 12h (the lower surface of the bottom surface of the canal part constituted by the canal sheet 12h) and the surface of the absorber 24i (the surface of the core wrap sheet 27) A part thereof is bonded by a hot melt adhesive at a linear bottom surface connecting portion 84g (length 120 mm, width 5 mm) extending from the crotch C to the front body F.
- the lower surfaces of the front covering portion 16b and the rear covering portion 18b of the S part and the left and right edge portions (portions where the absorber 24i and the core wrap sheet 27 do not exist) folded on the upper side of the leak preventer 22e are respectively The R part-front end coupling portion 86a and the R part-rear end coupling portion 88a are coupled.
- the lower surface of the inner extension 58 of the pair of left and right heads 10k of the S part and the left and right edges (portions where the absorber 24i and the core wrap sheet 27 do not exist) folded over the leak preventer 22e are: In the crotch C, they are joined at the S part-R part side edge joint 94a. Thereby, the S part and the R part are integrated.
- the front and rear connection between the S part and the R part and the connection at the left and right edges also serve to reinforce the connection at the bottom surface connection part 84g.
- the canal member 14r of the S part is formed by the canal sheet 12h in the relaxed state where the distance between the pair of left and right heads 10k is narrow (about 40 mm at the crotch C).
- the canal portion becomes deep (the deepest at the crotch portion C) and has a V-shaped or U-shaped shape.
- the discharged bodily fluid is received on the upper side of the canal sheet 12h, and then transferred to the surface of the absorber 24i from the upper side of the canal sheet 12h through the passage while moving in the front-rear direction.
- FIG. 13 is a schematic view showing still another example of the embodiment of the absorbent article according to the present invention.
- FIG. 13 (A) is a plan development view schematically showing a state where stress is applied to the absorbent article which is an aspect of a tape-type diaper and pulled in the front-rear direction and the left-right direction so as to be substantially flat.
- FIG. 13B is a lateral end view taken along line XIIIB-XIIIB in FIG. 13A in the above state.
- FIG. 13C is a lateral end view taken along line XIIIC-XIIIC in FIG. 13A when stress is not applied to the absorbent article (in a relaxed state).
- the absorbent article 103 shown in FIG. 13 is the same as the absorbent article 102 of the present invention shown in FIG. 12, except that a pair of left and right heads 101 has an outer extension 60 (length in the left and right direction is 30 mm). It differs in that it is.
- the outer extension 60 is connected to each of the front covering portion 16b and the rear covering portion 18b by a canal portion-front end coupling portion 80c and a canal portion-rear end coupling portion 82c.
- the outer extension 60 is different in that it is connected to the leak preventer 22e at the S part-R part side edge connecting part 94b.
- the absorbent article 103 shown in FIG. 13 has a greater degree of freedom in moving the pair of left and right heads 101 in the left-right direction as compared to the absorbent article 102 of the present invention shown in FIG.
- FIG. 14 is a schematic view showing still another example of the embodiment of the absorbent article according to the present invention.
- FIG. 14A shows an absorbent article, which is an aspect of a pant-type diaper, cut by waist seal portions (Z and Z ′ in the figure) on both the left and right sides of the waist gather to apply stress to the absorbent article. It is a longitudinal end view in the central part in the left-right direction in a state where it is pulled and developed in the front-rear direction and the left-right direction to form a substantially flat shape.
- FIG. 14B is a plan view of the S part in the above state.
- FIG. 14C is a plan view of the R part in the above state.
- the absorbent article 104 shown in FIG. 14 is the same as the absorbent article 101 of the present invention shown in FIG. 11 except that the S part and the R part are detachable and the size of each member. It is different in point.
- the material of each member is an example.
- the absorbent article 104 shown in FIG. 14 is configured as a children's pants-type diaper (super big size (for a body weight of about 13 to 25 kg)).
- the size of each member of the absorbent article 104 described below is an example in the case of the Super Big size, and can be changed as appropriate. Of course, if the size of the absorbent article is different, The size of the member also changes.
- item 104 demonstrated below is a thing of a tension
- the S part SP has a total length of 690 mm and a total width of 360 mm (200 mm in the relaxed state).
- the canal sheet member has a total length of 570 mm and a total width of 140 mm.
- the width of the folded part of the canal sheet 12 is 220 mm.
- the width of the pair of left and right heads 10 is 20 mm.
- the front covering portion 16 has a total length of 130 mm.
- the rear covering portion 18 has a total length of 160 mm.
- the R part RP has a total length of 500 mm and a total width of 210 mm.
- the absorber 24 has an hourglass shape with a narrow width at the crotch part C, and has a total length of 430 mm, a total width of 170 mm at maximum and 90 mm at minimum.
- detachable members 30c Velcro tape (male)
- TEZ male
- TEZ female
- the positions at which the detachable member 30c of the R part is detachably coupled are about 35 mm from the front end of the front covering portion 16 of the S part and about 35 mm from the rear end of the rear covering portion 18.
- an adhesive member 42a extending in the front-rear direction at the crotch part C (120 mm in the front-rear direction and 5 mm in the left-right direction) is provided at the center in the left-right direction of the surface sheet 26 covering the R-part absorber 24. ) And is attachable to and detachable from the lower surface of the S-part canal sheet 12 (the bottom surface portion of the canal portion).
- the S part and the R part are detachable by the action of the detachable member 30c, the detachable member detachable from the detachable member 30 and the adhesive member 42a.
- the absorber article of the present invention was explained based on each embodiment of illustration, the present invention is not limited to these, for example, the composition of each part is arbitrary which can exhibit the same function Can be replaced with configuration. Moreover, it can also be set as another embodiment by combining arbitrarily the structure of each part in each embodiment.
- the absorbent article of the present invention is suitably used for disposable diapers (for children and adults), incontinence products, training pants, feminine sanitary products, and the like.
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Abstract
Description
したがって、吸収体物品からその外部への体液のリーク(漏れ)を防ぐためには、吸収体物品と着用者の身体との間に間隙が生じないように、吸収体の表面と着用者の肌、特に、排出器とを密着させることが必要であった。
しかしながら、このような状態で吸収体物品を使用すると、体液の排出後には、着用者の肌が体液で濡れている吸収体の表面に密着した状態となる。着用者の肌が体液に接触している状態が長時間続くと、着用者にとって不快であるだけでなく、皮膚を膨化させ、細菌増殖の原因となり、かぶれや炎症を引き起こす事態を招くことにもなるという問題点があった。
特許文献1においては、前記ユニットは、フローティングレッグギャザー(FLG)として提案されている。特許文献2においては、前記ユニットは、体液の移動通路として提案されている。特許文献3においては、前記ユニットは、体液の受容キャナルとして提案されている。これらの提案に係るユニットは、いずれも、左右一対の頭部と左右一対の頭部に結合されて、垂下する垂下部とを持ち、左右一対の頭部のみが着用者の肌に接触する点で共通するものである。
(1)前後方向に延在し、少なくとも一部に伸縮性を有する左右一対の頭部と、前記左右一対の頭部に左右両縁が結合し、中央部が着用時に下側に垂れ下がるキャナルシートとを有する、キャナル部材と、
着用時に、前記キャナル部材の前記頭部が着用者の肌に接触するように、前記キャナル部材を着用者の身体に固定する、固定部材と
を有する、身体接触パートと;
体液の漏れを防ぐシート状の防漏体と、
前記防漏体の上側に配置された体液を吸収しうる吸収体と
を有する、身体非接触パートと
を具備し、
前記キャナルシートの上側から前記吸収体の表面に体液を移送する通路が設けられており、
前記キャナルシートの下面の一部と前記吸収体の表面の一部とが結合しており、
着用時に、前記吸収体が着用者の肌と離間した状態を保つようにされており、
着用者が体液を排出した場合、排出された体液が、前記キャナルシートの上側に受容され、その後、前後方向に移動しつつ、前記キャナルシートの上側から前記通路を通じて前記吸収体の表面に移送される、吸収体物品。
(2)前記キャナルシートの下面の左右方向の中央部の一部と、前記吸収体の表面の一部とが、底面結合部において結合している、上記(1)に記載の吸収体物品。
(3)前記底面結合部が、股下部を含む領域で、前後方向に延在する、上記(2)に記載の吸収体物品。
(4)前記キャナルシートの下面の左右縁部付近の一部と、前記吸収体の表面の一部とが、左右の側面結合部において結合している、上記(2)又は(3)に記載の吸収体物品。
(5)前記左右の側面結合部が、股下部を含む領域で、前後方向に延在する、上記(4)に記載の吸収体物品。
(6)前記固定部材が、前身頃を被覆する前方被覆部と、後身頃を被覆する後方被覆部とを有する、上記(1)~(5)のいずれかに記載の吸収体物品。
(7)前記前方被覆部と前記後方被覆部とを着脱可能に結合させる着脱部材を有する、上記(6)に記載の吸収体物品。
(8)前記前方被覆部と前記後方被覆部とが一体化し、着用時に、着用者の腹部の周囲を被覆する、上記(6)に記載の吸収体物品。
(9)前記キャナルシートの少なくとも一部が液不透過性である、上記(1)~(8)のいずれかに記載の吸収体物品。
(10)前記固定部材の少なくとも一部が液不透過性である、上記(1)~(9)のいずれかに記載の吸収体物品。
(11)前記防漏体の左右縁部に、その前後方向の長さを縮める作用を奏する伸縮体を有する、上記(1)~(10)のいずれかに記載の吸収体物品。
(12)前記防漏体が、着用時に、少なくとも股下部において、下側に凸状の形状となる、上記(1)~(11)のいずれかに記載の吸収体物品。
(13)着用時に、前記吸収体の表面と着用者の肌との距離が5mm以上となる、上記(1)~(12)のいずれかに記載の吸収体物品。
(14)前記身体接触パートと前記身体非接触パートとが着脱可能である、上記(1)~(13)のいずれかに記載の吸収体物品。
(15)上記(1)~(14)のいずれかに記載の吸収体物品を製造する、吸収体物品の製造方法であって、
前記身体接触パート及び前記身体非接触パートをそれぞれ形成する工程と、
その後、前記身体接触パートと前記身体非接触パートとを結合させる工程と
を有する、吸収体物品の製造方法。
また、本明細書においては、「吸収体物品本体」とは、吸収体物品の構成部材である防漏体、防漏体上に設けることができるトップシート、その他吸収体物品に設けることができる各種部材を総称していうものである。これに従い、吸収体物品がおむつである場合は、吸収体物品本体をおむつ本体と呼ぶ。
さらに、本明細書においては、「吸収体の表面」とは、吸収体が露出している場合は、その表面を意味し、吸収体が拡散シート、アクイジションシート、トップシート(サーフェスシート)、コアラップシート等で被覆されている場合は、被覆している拡散シート、アクイジションシート、トップシート(サーフェスシート)、コアラップシート等の表面を意味する。
図1(A)は、パンツ型おむつの態様である吸収体物品をその固定部材の左右両側の腰部シール部(図中のZ及びZ’)で切断して、吸収体物品に応力を加えて前後方向及び左右方向に引っ張って展開し、ほぼ平面状にした状態(緊張状態)を模式的に示した展開平面図である。図1(B)は、緊張状態の図1(A)中のIB-IB線に沿った横端面図である。図1(C)は、吸収体物品に応力を加えない場合の(弛緩状態の)図1(A)中のIC-IC線に沿った横端面図である。
このように、固定部材が、前身頃を被覆する前方被覆部と、後身頃を被覆する後方被覆部とを有するのは、本発明の好ましい態様の一つである。
このように、前方被覆部と後方被覆部とが一体化し、着用時に、着用者の腹部の周囲を被覆するのは、本発明の吸収体物品の好ましい態様の一つである。これにより、本発明の吸収体物品をパンツ型おむつとすることができる。
吸収体物品100は、Rパートが伸縮部材28を有する態様であるが、本発明においては、伸縮部材を有していなくてもよい。
Sパートの前方被覆部16及び後方被覆部18には、それぞれ、Rパートの前端部周辺及び後端部周辺が、帯状に、かつ、部分的に結合されている。
これにより、SパートとRパートとが外れないようになっている。
吸収体24を有するRパートは、着用者の肌とは確実に離間するようにされている。これは、SパートとRパートとをそれぞれモジュール化することにより、Rパートに含まれる吸収体の重さによって、キャナル部の底面部が下に引っ張られ、キャナル部全体のへたりや変形が少なくなり、特に、股下部CにおいてV字型又はU字型の立体構造を保ちやすくなり、ユニットの立体構造が安定的に存在するためである。
具体的には、着用時に、吸収体(又はそれを被覆するサーフェスシート等)の表面と着用者の肌との距離が5mm以上となるのが好ましい。
このような理由から、キャナルシート12の側面と吸収体24を被覆するサーフェスシート26との間には、間隙が存在するようになる。
この体液の受容及び移動は、キャナル部が安定的に存在するため、極めて円滑に行われる。
従来の吸収体物品においては、吸収体の長さや幅は、吸収体物品の前後方向の長さ及び左右方向の幅の範囲内で、特に、着用者の股下部の狭窄な部位に適合するように設計される必要があった。
本発明においては、吸収体を含むRパートが、着用者の肌から離間した位置にあるから、股下部の狭窄な部位に適合させる必要はない。例えば、股下部に相当する短い長さにする一方で、左右方向に幅広にすることができる。
図2は、テープ型おむつの態様である本発明の吸収体物品におけるSパートの例を示す模式図である。図2(A)は、Sパートに応力を加えて前後方向及び左右方向に引っ張って展開し、ほぼ平面状にした状態(緊張状態)を模式的に示した展開平面図である。図2(B)は、緊張状態の図2(A)中のIIB-IIB線に沿った横端面図である。図2(C)は、Sパートに応力を加えない場合の(弛緩状態の)図2(A)中のIIC-IIC線に沿った横端面図である。
このように、前方被覆部と後方被覆部とを着脱可能に結合させる着脱部材を有するのは、本発明の好ましい態様の一つである。これにより、本発明の吸収体物品をテープ型おむつとすることができる。
キャナルシート12aは、図2(B)の前方被覆部の横断面図に示されるように、その下面の左右両側が、前方被覆部16aと、キャナル部-前端結合部80aで結合している。これらの結合は、キャナル部の前端及び左右縁部に隙間が生じて体液の漏れが発生しないように、密閉シールする役割を果たす。具体的には、ホットメルト接着剤等の接着剤により、隙間なく結合させる。
キャナルシート12aの左右方向の中央付近により構成されるキャナル底面32と、キャナルシート12aの左側の頭部10aから垂れ下がった部分により構成されるキャナル左側面部34と、キャナルシート12aの右側の頭部10aから垂れ下がった部分により構成されるキャナル右側面部36とにより、キャナル部が形成されている。
キャナル部は、前後方向において、前身頃F、股下部C、後身頃Rの三つの領域に区分することができる。
キャナル部は、股下部Cにおいて、最も深くなり、断面がV字型又はU字型となる立体構造を呈する。
(1)キャナルシート
図3は、種々のキャナルシートを有するキャナル部材を示す模式的な横端面図である。
図3(A)に示されるキャナル部材14bは、左右一対の頭部10bに、キャナルシート12bの左右縁部が結合して、断面がV字型又はU字型となるように、キャナルシート12bの中央部付近が垂れ下がっている。キャナルシート12bの左右縁部は、左右一対の頭部10bを被覆していてもよい。
この延在部は、通常は、図3(B)に示されるように比較的短く設計される。延在部は、体液をキャナル部に受容する場合には、ガイドシートとして働き、また一時的に収容されて、留まっている体液がキャナル部の外にオーバーフローするのを防止する機能も奏する。
キャナルシート12cの左右縁部は、左右一対の頭部10bを被覆していてもよい。
この延在部は、図3(C)に示されるように比較的短く設計することができる。この比較的短い延在部は、頭部10bを越える体液が生じた場合に、その体液を吸収体(図示せず)上に回収する液ガイドの機能を奏する。
延在部が、比較的長く設計される場合には、例えば、キャナル部材14dに吸収体(図示せず)が結合されて配置される際に、その吸収体の側面を被覆する部分として、又はその吸収体の左右縁部と結合される部分として働く。
キャナルシート12dの左右縁部は、左右一対の頭部10bを被覆していてもよい。
不織布としては、例えば、合成繊維を原料とする不織布(例えば、PE、PP、PET又はこれらの複合繊維を原料とするスパンボンド(SB)、スパンボンド・メルトブローン積層体(SMS、SMMS)等のスパンメルト不織布;カードウェブを結合したスポットボンド不織布、水流絡合(スパンレースともいう。)不織布、エアスルー不織布)を、単独で又は複合させて使用することができる。
上述した合成繊維を原料とする不織布は、通常、疎水性であるので、体液の浸透性を賦与するため界面活性剤で処理するなどの方法により、全面的に又は部分的に親水化加工を施した不織布を用いることもできる。
この不織布をキャナルシートとして用いると、キャナル部の内面側においては、体液の受容と移動が円滑に行われる。これにより、体液の出口以外の部分からの体液のキャナル部の外への漏れを効果的に防止することができる。
具体的には、例えば、疎水性の不織布(例えば、PP製SMS)に、親水性の不織布(例えば、レーヨン不織布、コットン不織布)又はティッシュペーパーを部分的に積層した積層体が挙げられる。この積層体は、親水性の不織布又はティッシュペーパーの面がキャナル部の内面に、疎水性の不織布の面がキャナル部の外面になるよう配置される。
また、例えば、親水化処理を施された不織布に、疎水性のフィルム(例えば、PEフィルム)を積層した積層体が挙げられる。この積層体は、親水化処理を施された不織布の面がキャナル部の内面に、疎水性のフィルムの面がキャナル部の外面になるよう配置される。
図4は、種々の頭部を有するキャナル部材を示す模式図である。図4(A)、図4(C)、図4(E)、図4(G)及び図4(I)は、それぞれ弛緩状態の横端面図であり、図4(B)、図4(D)、図4(F)、図4(H)及び図4(J)は、それぞれ緊張状態の平面図である。
図4(A)及び図4(B)に示されるキャナル部材14eは、キャナルシート12b(例えば、PE/PPスパンボンド不織布。例えば、目付量15g/m2)と、その左右縁部に、3本のフィラメント状の弾性糸(例えば、ポリウレタンフィラメント。例えば、600dtex)11を並列に配置して被覆させてなる左右一対の頭部10cとを有する。
弾性糸11は、図4(B)に示されるように、前身頃Fから、股下部Cを経て、後身頃Rにわたって、前後の両端部付近を除く全長に配置されている。
頭部10cの弾性糸11は、前後方向に応力を掛けて伸長された状態でキャナルシート12bに被覆され、接着される。接着後、応力を解放して弾性糸11を弛緩状態とすると、弾性糸11は、収縮して短くなり、これによりキャナルシート12bの左右縁部と弾性糸11とが一体となって頭部10cが伸縮性を有するようになる。
キャナル部材14eは、左右一対の頭部10cに、キャナルシート12bの左右縁部が結合して、断面がV字型又はU字型となるように、キャナルシート12bの中央部付近が垂れ下がっている。
発泡部材11aは、図4(D)に示されるように、前身頃Fから、股下部Cを経て、後身頃Rにわたって、前後の両端部付近を除く全長に配置されている。
頭部10dの発泡部材11aは、前後方向に応力を掛けて伸長された状態でキャナルシート12bに被覆され、接着される。接着後、応力を解放して発泡部材11aを弛緩状態とすると、発泡部材11aは、収縮して短くなり、これにより頭部10dが伸縮性を有するようになる。
キャナル部材14fは、左右一対の頭部10dに、キャナルシート12bの左右縁部が結合して、断面がV字型又はU字型となるように、キャナルシート12bの中央部付近が垂れ下がっている。
弾性糸11は、図4(F)に示されるように、前身頃Fから、股下部Cを経て、後身頃Rにわたって、前後の両端部付近を除く全長に配置されている。他方、発泡部材11bは、股下部Cと前身頃F及び後身頃Rの一部とを含む位置に配置されている。発泡部材は、弾性糸と同様にほぼ全長にわたって配置してもよいが、図4(F)に示されるように一部のみに配置した方が安価となる。
頭部10eは、股下部Cにおいては、3本の弾性糸11とその側面から上部にかけてを被覆する発泡部材11bとにより、弛緩状態で、極めて嵩高(例えば、厚さ7~8mm)とすることができる。これにより、頭部10eは、嵩高となり、クッション性を有し、頭部10eと着用者の股下部の肌との優れた密着性を得ることができる。
キャナル部材14hの機能は、キャナル部材14gとほぼ同様である。
弾性糸11は、図4(J)に示されるように、前身頃Fから、股下部Cを経て、後身頃Rにわたって、前後の両端部付近を除く全長に配置されている。他方、発泡部材11dは、股下部Cと前身頃F及び後身頃Rの一部とを含む位置に配置されている。発泡部材は、弾性糸と同様にほぼ全長にわたって配置してもよいが、図4(J)に示されるように一部のみに配置した方が安価となる。
また、キャナルシート12bは、股下部Cにおいて、発泡部材11dにより被覆されている。これにより、股下部Cにおいて、キャナル部材14iの剛性が高くなり、着用時の着用者の***の変化等によって生じる加重によるキャナル部材14iのへたりや変形を少なくし、図4(I)に示されるV字型又はU字型の立体構造を常時保ちやすくなり、ひいては、体液の受容と移動を安定に行うことができる。
さらに、発泡部材11dとして、液不透過性の材料(例えば、上述したポリプロピレン製発泡体シート)を用いた場合、キャナルシート12bに親水性の不織布を使用した場合でも、股下部Cにおけるキャナル部からその外側への体液移動を防止することができる。
以上述べたように、キャナル部材14iにおいては、異なる機能材料の組合せにより製品設計の自由度を広げることができる。
体液の受容と移動に関わるキャナル部が安定してその機能を発揮するためには、着用時に、V字型又はU字型の断面を有する立体構造が保持されることが必要である。
そのためには、着用時に、着用者の身体の動きや***変化による加重や隙間状態の違いにより、キャナル部が押し潰されたり、大きくゆがみ変形したりすることが起こらないようにしておくのが好ましい。特に、キャナル部が深くなる股下部C及びその前後の領域においては、立体構造をしっかりと保持するのが好ましい。
図5(A)及び図5(B)に示されるキャナル部材14jは、図3(A)に示されるキャナル部材14bと同様であるが、キャナルシート12b(例えば、親水性の不織布(例えば、PETエアスルー不織布))の下側(外側)に、液不透過性フィルム15(例えば、PEフィルム(例えば、LLDPE樹脂にCaCO3を共存させた通気性フィルム)。例えば、厚さ20μm))が設けられている。
液不透過性フィルム15は、前後方向においては、キャナル部材14jのほぼ全長にわたって、左右方向においては、キャナル部の底面部と左側面部及び右側面部の一部とを被覆するように設けられている。キャナルシート12bと液不透過性フィルム15とは、ホットメルト接着剤等の接着剤により接着されている。
キャナル部材14jにおいては、キャナルシート12bが液不透過性フィルム15により被覆されているため、キャナル部の底面部と左側面部及び右側面部の一部とが液不透過性(防漏性)となるともに、キャナルシート12bが補強され、キャナル部のへたり現象が軽減され、変形が少なくなり、V字型又はU字型の立体構造がほぼ全長にわたって保たれやすくなる。
液不透過性発泡部材15aは、前後方向においては、キャナル部材14kの股下部C及びその前後にわたって、左右方向においては、キャナル部の底面部と左側面部及び右側面部の一部とを被覆するように設けられている。キャナルシート12bと液不透過性発泡部材15aとは、ホットメルト接着剤等の接着剤により接着されている。
キャナル部材14kにおいては、キャナルシート12bが液不透過性発泡部材15aにより被覆されているため、キャナル部の底面部と左側面部及び右側面部の一部とが液不透過性(防漏性)となるともに、キャナルシート12bが補強され、キャナル部のへたり現象が軽減され、変形が少なくなり、V字型又はU字型の立体構造が股下部Cを中心とする領域にわたって保たれやすくなり、その前後の領域も変形が軽減される。
液不透過性発泡部材15bは、前後方向においては、キャナル部材14kの股下部Cに、左右方向においては、キャナル部の底面部と左側面部及び右側面部の一部とを被覆するように設けられている。キャナルシート12bと液不透過性発泡部材15bとは、ホットメルト接着剤等の接着剤により接着されている。
液不透過性発泡部材15bの下側の平面部は、吸収体又はそれを被覆するサーフェスシート(いずれも図示せず)とホットメルト接着剤等の接着剤により左右方向の幅広い範囲で結合している。
キャナル部材14lにおいては、キャナルシート12bが液不透過性発泡部材15bにより被覆されているため、キャナル部の底面部と左側面部及び右側面部の一部とが液不透過性(防漏性)となるともに、キャナルシート12bが効果的に補強され、キャナル部のへたり現象が大幅に軽減され、変形がほとんどなくなり、V字型又はU字型の立体構造が股下部Cを中心とする領域にわたって保たれやすくなり、その前後の領域も変形が軽減される。
吸液性発泡部材15cは、前後方向においては、キャナル部材14kの股下部Cに、左右方向においては、キャナル部の底面部と左側面部及び右側面部の一部とを被覆するように設けられている。キャナルシート12bと吸液性発泡部材15cとは、ホットメルト接着剤等の接着剤により接着されている。
キャナル部材14mにおいては、キャナルシート12bが吸液性発泡部材15cにより被覆されているため、キャナル部の内面において、底面部と左側面部及び右側面部の一部とが親水性となり、体液の濡れ性が優れたものとなり、体液の移動が円滑になるとともに、キャナルシート12bが効果的に補強され、キャナル部のへたり現象が大幅に軽減され、変形がほとんどなくなり、V字型又はU字型の立体構造が股下部Cを中心とする領域にわたって保たれやすくなり、その前後の領域も変形が軽減される。
親水性嵩高ウェブ15dは、前後方向においては、キャナル部材14nの股下部Cと前身頃F及び後身頃Rの一部とにわたって、左右方向においては、キャナル部の底面部と左側面部及び右側面部の一部とを被覆するように設けられている。キャナルシート12bと親水性嵩高ウェブ15dとは、ホットメルト接着剤等の接着剤により接着されている。
キャナル部材14nにおいては、キャナルシート12bが親水性嵩高ウェブ15dにより被覆され、充填されているため、キャナル部の内面において、底面部と左側面部及び右側面部の一部とが親水性となり、体液の濡れ性が優れたものとなり、体液の移動が円滑になるとともに、キャナルシート12bが効果的に補強され、キャナル部のへたり現象が大幅に軽減され、変形がほとんどなくなり、V字型又はU字型の立体構造が股下部Cを中心とする領域にわたって保たれやすくなり、その前後の領域も変形が軽減される。
Sパートは、キャナル部材と、固定部材とを有する。
固定部材は、着用時に、キャナル部材の頭部が着用者の肌に接触するように、キャナル部材を着用者の身体に固定するものであれば、特に限定されない。
固定部材に用いられる材料は、例えば、不織布、不織布と液不透過性フィルム(例えば、通気性PEフィルム)とを積層させた複層シートが挙げられる。
中でも、固定部材の少なくとも一部が液不透過性であるのが好ましい。この場合、たとえキャナル部材の端部まで体液が伝わってきても、そこから外部への滲み出し漏れを防ぐことができる。
図6(A)及び図6(B)には、それぞれ、別体結合型のSパートが示されている。
図6(A)に示されるSパートは、図2(A)に示されるSパートと同じものである。図6(A)に示されるSパートは、上述したとおり、テープ型おむつの態様の吸収体物品に用いられるものである。
固定部材として機能する前方被覆部16a及び後方被覆部18aと、キャナル部材14aとを結合させて一体化してSパートが構成される。
後方被覆部18aの左右両側には、着脱部材30が設けられている。前方被覆部16aの下面には、着脱部材30と互いに着脱自在となるように、着脱部材(図示せず)が設けられている。
固定部材として機能する前方被覆部16及び後方被覆部18と、キャナル部材14とを結合させて一体化してSパートが構成される。
前方被覆部16a及び後方被覆部18aの左右縁部の腰部シール部Z同士、腰部シール部Z’同士は、互いに結合している。この結合は、キャナル部材14との一体化の前に行ってもよく、後に行ってもよく、同時に行ってもよい。
前方被覆部16aと後方被覆部18aとは、一つの原材料から切り出して製造することもできる。
図6(C)に示されるSPは、テープ型おむつの態様の吸収体物品に用いられるものである。
図6(C)に示されるSPにおいては、キャナル部材14oは、頭部10hとキャナルシート12eとを有する。キャナルシート12eは、前方被覆部16b及び後方被覆部18bと連続した一部材(例えば、不織布)により構成されている。頭部10hは、この部材の左右縁部に、伸縮体を結合して設けられる。
後方被覆部18bの左右両側には、着脱部材30が設けられている。前方被覆部16bの下面には、着脱部材30と互いに着脱自在となるように、着脱部材(図示せず)が設けられている。
図6(D)に示されるSPにおいては、キャナル部材14pは、頭部10iとキャナルシート12fとを有する。キャナルシート12fは、前方被覆部16c及び後方被覆部18cと連続した一部材(例えば、不織布)により構成されている。頭部10iは、この部材の左右縁部に、伸縮体を結合して設けられる。
前方被覆部16b及び後方被覆部18bの左右縁部の腰部シール部Z同士、腰部シール部Z’同士は、互いに結合している。
図6(E)に示されるSPは、テープ型おむつの態様の吸収体物品に用いられるものである。
図6(E)に示されるSPは、図6(F)に示される、左右一対の頭部10jとキャナルシート12gとを有するキャナル部材14qと、固定部材として機能する、左側被覆部38及び右側被覆部40とにより構成される。
図6(E)に示されるように、キャナル部材14qの左側に左側被覆部38、キャナル部材14qの右側に右側被覆部40をそれぞれ結合部90において結合させて一体化する。左側被覆部38及び右側被覆部40の前身頃F部分を前方被覆部、後身頃R部分を後方被覆部と捉えることもできる。
左側被覆部38の後方左側及び右側被覆部40の後方右側には、それぞれ、着脱部材30が設けられている。左側被覆部38及び右側被覆部40の下面には、それぞれ、着脱部材30と互いに着脱自在となるように、着脱部材(図示せず)が設けられている。
左側被覆部38と右側被覆部40とは、一つの原材料から切り出して製造することもできる。
図7及び図8は、それぞれ、種々のRパートを示す模式図である。
図7(A)は、Rパートの平面図である。図7(B)は、図7(A)中のVIIB-VIIB線に沿った横端面図である。
図7(A)及び図7(B)に示されるRパートは、シート状の防漏体22aと、吸収体24aと、サーフェスシート26aとを有する。
吸収体24aは、液不透過性の防漏体22a上に、前身頃Fから股下部Cを経て後身頃Rに至るまで連続して配置され、その上面の全体を液透過性のサーフェスシート26aが被覆している。
防漏体22aとサーフェスシート26aとは、前後左右の端部で結合し、吸収体24aが外に漏れたり、はみ出したりしないようにしている。
Rパートの前後方向の長さ(全長)LRは、Sパートの全長LSと比べて選択の余地が大きい。
Rパートの全長LRは、Sパートの全長LSより短くても長くてもよいし、また、キャナル部材の全長LCより短くても長くてもよい。
Rパートの左右方向の幅(全幅)WRは、Sパートの全幅WSと比べて選択の余地が大きい。
Rパートの全幅WRは、Sパートの全幅WSより短くても長くてもよいし、また、キャナル部材の全幅WCより短くても長くてもよい。例えば、Sパートの全幅WSがキャナル部材の全幅WCより長く、かつ、Rパートの全幅WRがSパートの全幅WSより長くしてもよい。
後述する図7(I)及び図7(J)に示されるRパートは、LRが比較的短く、WRが比較的長い例である。
防漏体の材質は、一般に、バックシートとして用いられているものを用いることができる。具体的には、例えば、PE、PP、PET、EVA等の樹脂のフィルム;前記樹脂の発泡シート等の体液不透過性シートを用いることができる。体液不透過性シートは、通気性フィルム等の通気性を有するものも好適に用いられる。
また、前記樹脂のフィルムを用いる場合には、感触や外観を向上させるために、フィルムと不織布との複層シートとして用いることもできる。この場合、不織布としては、比較的低目付のSB、サーマルボンド不織布(例えば、エアスルータイプ)等が好適に用いられる。
また、前記樹脂のフィルムと後述するシート状吸収体との複層シートを用いることもできる。
また、高耐水性不織布を用いることもできる。高耐水性不織布としては、例えば、耐水度100mmH2O以上の耐水性を有するSMS、不織布ウェブの細孔をミクロフィブリル化セルロース(MFC)やワックスで充填することにより耐水性を付与されたSMSが挙げられる。この場合、単独で用いてもよく、フィルムと高耐水性不織布との複層シートとして用いることもできる。
シート状吸収体の中でも、SAPを50質量%以上、好ましくは60質量%以上、より好ましくは70質量%以上含有する高吸水性シートであるのが好ましい。また、高吸水性シートにおけるSAPの含有量は、高吸水性シートの安定性等の点で、95質量%以下であるのが好ましい。
高吸水性シートは、SAPを主成分とする極薄のシート状吸収体であれば、構成や製造方法を特に限定されない。
例えば、Air Laid法で得られる高吸水性シートが挙げられる。Air Laid法は、粉砕した木材パルプとSAPとを混合し、結合剤を添加してシート状に成形して高吸水性シートを得る方法である。この方法で得られる高吸水性シートとしては、例えば、米国レオニヤ(Rayonier)社製のNOVATHIN(米国登録商標)、王子キノクロス社製のB-SAP等が知られている。
また、SAPの分散スラリーを不織布等の体液透過性シートの上にコーティングする方法で得られる高吸水性シートも挙げられる。ここで、SAPの分散スラリーは、SAPとミクロフィブリル化セルロース(MFC)とを、水とエタノールとの混合溶媒に分散させたものであるのが好ましい。この方法で得られる高吸水性シートとしては、例えば、(株)日本吸収体技術研究所製のMegaThin(登録商標)が知られている。
そのほかに、例えば、起毛状不織布にSAPを大量に担持させ、ホットメルト接着剤、エマルションバインダー、水性繊維等で固定する方法で得られる高吸水性シート、繊維状SAPをPET(ポリエチレンテレフタレート)繊維と混合してウェブ状に成形する方法で得られる高吸水性シート、SAP層の上下をティッシュで挟んだSAPシートが挙げられる。
また、吸収体は、折りたたんだ状態で配置することもできる。
図7(C)及び図7(D)に示されるRパートは、図7(A)及び図7(B)に示されるRパートと同様であるが、吸収体24aの代わりに、前部及び後部に存在する二つの吸収体24bを有する点で異なる。
前後方向の中央部の吸収体24bが存在しない部分においては、防漏体22aとサーフェスシート26aとが結合されている。
この態様のRパートは、吸収体のない中央部を折り曲げ線として前後に折り畳みやすいという利点がある。
図7(E)及び図7(F)に示されるRパートは、図7(A)及び図7(B)に示されるRパートと同様であるが、吸収体24aの代わりに、左右両側に存在する二つの細長い吸収体24cを有する点で異なる。
左右方向の中央部の吸収体24cが存在しない部分においては、防漏体22aとサーフェスシート26aとが結合されている。
この態様のRパートは、吸収体のない中央部を折り曲げ線として左右に折り畳みやすいという利点がある。
図7(G)及び図7(H)に示されるRパートは、図7(A)及び図7(B)に示されるRパートと同様であるが、吸収体24aの代わりに、左右両縁部を上側に折り返し、中央部が1層、その左右両側が2層となっている吸収体24dを有する点で異なる。
この態様のRパートは、吸収体が1層である中央部を折り曲げ線として左右に折り畳みやすいという利点がある。
図7(I)及び図7(J)に示されるRパートは、シート状の防漏体22bと、2個の吸収体24eと、サーフェスシート26bとを有する。
シート状の防漏体22bは、前後方向の長さが比較的短く(例えば、100~150mm)、ほぼ股下部Cのみに存在する。
シート状の防漏体22bは、左右方向の幅が比較的長く(例えば、200mm程度)、左右にウイング状に延在している。
2個の吸収体24eは、それぞれ、例えば、長方形のもの(例えば、長さ100mm、幅50mm)が用いられ、防漏体22bの左右両側に配置され、その上面の全体を液透過性のサーフェスシート26bが被覆し、更に、その上側を左右縁部が上側に折り返された防漏体22bが被覆している。防漏体22bの幅方向の中央部には、吸収体が存在していない。
防漏体22bとサーフェスシート26bとは、前後の端部で結合している。
防漏体22bは、左側の吸収体24eの下面、左側面及び上面の3面を被覆し、左側の吸収体24eの前側及び後側において、吸収体24eのない縁部で折り返し部分同士が結合され、吸収体24eが内部に配置された袋状のカプセルを形成している。同様に、防漏体22bは、右側の吸収体24eの下面、右側面及び上面の3面を被覆し、右側の吸収体24eの前側及び後側において、吸収体24eのない縁部で折り返し部分同士が結合され、吸収体24eが内部に配置された袋状のカプセルを形成している。
左右両側のカプセルは、対向する開口部を有する。この開口部は、キャナル部から移送された体液の入口となる。
図8(A)及び図8(B)に示されるRパートは、シート状の防漏体22aと、吸収体24fと、サーフェスシート26aとを有する。
吸収体24fは、前後方向の中央部が凹んだ形状をしており、液不透過性の防漏体22a上に、前身頃Fから股下部Cを経て後身頃Rに至るまで連続して配置され、その上面の全体を液透過性のサーフェスシート26aが被覆している。
この態様のRパートは、吸収体の左右方向の幅が狭くなっている中央部分を折り曲げ線として前後に折り畳みやすいという利点がある。
防漏体22aの左右の縁部、より具体的には、防漏体22aとサーフェスシート26aとの左右の端部の結合部には、フィラメント状の2本の伸縮部材28aが防漏体22aとサーフェスシート26aとに挟まれて設けられている。
伸縮部材28aは、従来の吸収体物品におけるインナーレッグギャザー(ILG)やアウターレッグギャザー(OLG)のように、着用者の身体に密着して体液の横漏れを防止する目的のものではなく、その前後方向の長さを縮める作用を奏することにより、下側に凸状の形状(C字型)に変形して起立しやすくして、Rパートの表面とキャナル部の底面部の曲面との接触面積を大きくするためのものである。
このように、防漏体の左右縁部に、その前後方向の長さを縮める作用を奏する伸縮部材を有するのは、本発明の吸収体物品の好ましい態様の一つである。
また、このように、防漏体が、着用時に、少なくとも股下部において、下側に凸状の形状となるのは、本発明の吸収体物品の好ましい態様の一つである。
図8(C)及び図8(D)に示されるRパートは、図8(A)及び図8(B)に示されるRパートと同様であるが、更に、サーフェスシート26aの前後端部にそれぞれSパート(図示せず)とRパートとを着脱自在に結合させる着脱部材30aを有し、また、サーフェスシート26aの股下部Cの左右方向の中央部に、前後方向に延在し、キャナル部の底面部に着脱自在に結合させる粘着部材42を有する点で異なる。
着脱部材30aは、着脱部材30と同様のものを用いることができる。例えば、各種面ファスナーにより構成することができる。具体的には、着脱部材30aとして、粘着テープ、ベルクロテープ(雄)、Sパートに設けられる着脱部材として、TLZ(雌)、ZLZ(雌)を用いることができる。
粘着部材42は、使用前には、はく離紙で被覆しておくのが好ましい。
図8(C)及び図8(D)に示されるRパートは、着脱部材30a及び粘着部材42の作用により、Sパートと着脱可能となっている。
このように、SパートとRパートとが着脱可能であるのは、本発明の吸収体物品の好ましい態様の一つである。
図8(E)及び図8(F)に示されるRパートは、図8(A)及び図8(B)に示されるRパートと同様であるが、防漏体22cが前後端部で上側に折り返され、折り返し部分の左右縁部がサーフェスシート26aと結合して、前方ポケット部44及び後方ポケット部46を形成している点で異なる。
この態様のRパートは、前方ポケット部44及び後方ポケット部46により、前後漏れの発生をより効果的に抑制することができる。
本発明の吸収体物品においては、SパートとRパートとは、少なくともSパートのキャナルシートの下面の一部とRパートの吸収体(又は吸収体を被覆するサーフェスシート若しくは拡散シート)の表面の一部とが結合している。これにより、キャナル部に受容された体液を、通路を経由して吸収体の表面に円滑に移送することが可能になる。
図9(A)に示される吸収体物品100aは、図3(A)に示されるキャナル部材14bを有するSパートと、図7(A)及び図7(B)に示されるRパートとを有する。
Sパートのキャナルシート12bの下面とRパートの吸収体24aを被覆するサーフェスシート26aの表面とは、左右方向の中央部において、前後方向に延在する底面結合部84aで、結合している。
このように、キャナルシートの下面の左右方向の中央部の一部と、吸収体又はそれを被覆するサーフェスシート等の表面の一部とが、底面結合部において結合しているのは、本発明の吸収体物品の好ましい態様の一つである。
底面結合部84aは、左右方向の幅が短い線状のものであるが、左右方向の幅が長い帯状のものとしてもよい。
底面結合部84aは、股下部Cのみに存在していてもよく、股下部Cから前身頃F及び/又は後身頃Rに延在していてもよい。底面結合部が、股下部Cを含む領域で、前後方向に延在するのは、本発明の吸収体物品の好ましい態様の一つである。
Sパートのキャナルシート12bの下面とRパートの吸収体24cを被覆するサーフェスシート26aの表面とは、左右方向の中央部(吸収体24cの存在しない箇所)において、前後方向に線状に延在する底面結合部84bで、結合している。
底面結合部84bは、左右方向の幅が短い線状のものであるが、左右方向の幅が長い帯状のものとしてもよい。
底面結合部84bは、股下部Cのみに存在していてもよく、股下部Cから前身頃F及び/又は後身頃Rに延在していてもよい。
底面結合部84cは、左右方向の幅が長い帯状のものであるが、左右方向の幅が短い線状のものとしてもよい。
底面結合部84cは、股下部Cのみに存在していてもよく、股下部Cから前身頃F及び/又は後身頃Rに延在していてもよい。
Sパートのキャナルシート12bの下面とRパートの吸収体24aを被覆するサーフェスシート26aの表面とは、左右方向の中央部及びその左右両側において、前後方向に延在する底面結合部84d及び側面結合部92の3箇所で結合している。
この態様の吸収体物品においては、キャナル部のV字型又はU字型にフィットするように、Rパートが下側に凸状の形状(C字型)に変形して起立し、キャナル部の底面から側面にかけての部分と結合して補強するため、キャナル部の立体構造が保たれやすくなり、着用者の***に変化や動作によってキャナル部がつぶれたり、変形したりすることが大幅に抑制される。
このように、キャナルシートの下面の左右方向の中央部の一部に加え、キャナルシートの下面の左右縁部付近の一部と、吸収体又はそれを被覆するサーフェスシート等の表面の一部とが、左右の側面結合部において結合しているのは、本発明の吸収体物品の好ましい態様の一つである。
側面結合部92は、股下部Cのみに存在していてもよく、股下部Cから前身頃F及び/又は後身頃Rに延在していてもよい。側面結合部が、股下部Cを含む領域で、前後方向に延在するのは、本発明の吸収体物品の好ましい態様の一つである。
このような側面結合部を持つ吸収体物品は、着用時に下側に凸の形状を形成しやすくなり、特に、股下部においては下側に凸の形状が大きくなる。
3箇所で結合することの効果は、図10(A)に示される吸収体物品100dと同様である。
図10(B)に示される吸収体物品100eにおいては、左右方向の中央部に吸収体が存在しないため、左右に折れ曲がりやすくなっているので、キャナル部の断面形状が、図10(A)に示される吸収体物品100dがU字型に近い形状を呈するのと比べて、V字型に近くなる。
この態様の吸収体物品においては、Sパートのキャナルシート12bの下面とRパートの吸収体24cを被覆するサーフェスシート26cの表面とは、3箇所で結合しているが、キャナル部の底面から側面にかけて連続的に結合していてもよい。
Rパートにおいては、防漏体22dの上に、左右方向のほぼ全域にわたって延在する吸収体24gと、吸収体24gの上を被覆する拡散シート48と、拡散シート48の左右両側の上に存在する2個の吸収体24hが設けられている。
シート状の防漏体22dは、前後方向の長さが比較的短く(例えば、120mm程度)、ほぼ股下部Cのみに存在する。
シート状の防漏体22dは、左右方向の幅が比較的長く(例えば、300mm程度)、左右にウイング状に延在している。
2個の吸収体24hは、それぞれ、例えば、長方形のもの(例えば、長さ100mm、幅50mm)が用いられる。
防漏体22dは、左右の縁部で上側に折り返され、前端及び後端(いずれも図示せず)において、折り返し部分同士が結合され、袋状のカプセルを形成している。
左右両側のカプセルは、対向する開口部を有する。この開口部は、キャナル部から移送された体液の入口となる。
また、図示しないが、Rパートの前後端は、キャナルシート12bの下面(外面)にホットメルト接着剤等の接着剤により部分的に結合されている。
本発明の吸収体物品においては、機能上は、上述したように、Sパートのキャナルシートの下面の一部とRパートの吸収体(又は吸収体を被覆するサーフェスシート若しくは拡散シート)の表面の一部とが結合していればよく、その他の箇所では、SパートとRパートとは結合していなくてよいが、結合していた方が、外観が優れたものとなる。
Rパートの全長LRがSパートの全長LSより長い場合は、Rパートの前端及び/又は後端付近の左右両側縁部を、Sパートの固定部材(例えば、前方被覆部及び/又は後方被覆部)に接着剤により結合させることができる。
Rパートの全長LRがSパートの全長LS以下である場合は、Rパートの前端及び/又は後端を、Sパートの固定部材(例えば、前方被覆部及び/又は後方被覆部)に接着剤により結合させることができる。その場合、結合の態様は、特に限定されず、左右両縁部及び中央部の3箇所としてもよいし、一定間隔でスポット的に結合してもよいし、全面を帯状に結合してもよい。この場合、液密に結合させる必要はない。
中でも、Rパートの全長LRがキャナル部材の全長LC以下である場合、例えば、股下部CのみにRパートが存在するような場合は、Rパートの前端及び後端が、キャナルシートに、左右方向に部分的に又は全域に結合させることができる。
本発明の吸収体物品においては、キャナルシートの上側から吸収体の表面に体液を移送する通路が設けられている。
通路は、例えば、キャナルシート自体が有する微小開口(例えば、キャナルシートが液透過性の不織布で構成されている場合、液透過性の不織布の細孔)、キャナルシートに設けられたスリット、キャナルシートに設けられた切欠きが挙げられる。
本発明の吸収体物品を着用している着用者が体液を排出した場合、排出された体液が、キャナルシートの上側に受容され、その後、前後方向に移動しつつ、キャナルシートの上側から上述した通路を通じて吸収体の表面に移送される。
本発明の吸収体物品は、その製造方法を特に限定されないが、Sパート及びRパートをそれぞれ形成する工程と、その後、SパートとRパートとを結合させる工程とを行うことにより、製造することができる。
このように、Sパート及びRパートをそれぞれモジュール化することにより、製造工程が簡易になり、したがって、投資コストを抑制することができるとともに、生産性も優れたものとなる。
以下に説明する吸収体物品101の各部材の大きさは、スーパーBigサイズである場合の一例であり、適宜変更することができるものであり、また、吸収体物品のサイズが異なれば、当然各部材の大きさも変わってくる。また、以下に説明する吸収体物品101の各部材の大きさは、特に記載のない限り、緊張状態のものである。
キャナルシート部材は、全長が550mm、全幅が140mmである。キャナルシート12の折り畳み部分を拡げた幅は、220mmである。左右一対の頭部10の幅は、20mmである。
前方被覆部16は、全長が130mmである。後方被覆部18は、全長が160mmである。
吸収体24は、股下部Cにおいて幅が狭くなっている砂時計状であり、全長が490mm、全幅が最大180mm、最小90mmである。
キャナル部材14の前後端部の下面と前方被覆部16及び後方被覆部18の上面とは、それぞれ、キャナル部-前端結合部80及びキャナル部-後端結合部82でホットメルト接着剤により帯状に連続的に結合し、防漏性を有するように一体化されている。
キャナルシート12は、疎水性であるため、その細孔は、体液を吸収体の表面に移送する通路としての機能は奏しない。
また、キャナルシート12の後身頃Rから股下部Cにかけての領域には、左右に横切るC字型の後部スリット54と、それより前側に存在する前後方向に延在する細かい線状の後方スリット群56とが設けられている。後部スリット54及び後方スリット群56は、Sパートのキャナル部からRパートの吸収体24へ体液を移送する通路(後方出口)となる。
前方被覆部16の前端付近及び後方被覆部18の後端付近には、それぞれ、全幅にわたって、ウエストギャザー20(厚さ0.35mm、幅1mmのゴム糸3本が12mm間隔で配置され、前方被覆部16及び後方被覆部18を構成する2枚の不織布に挟まれることにより構成されている。)が設けられている。
前方被覆部16のウエストギャザー20より後側及び後方被覆部18のウエストギャザー20より前側には、それぞれ、シャーリングギャザー21(400dtexのポリウレタンフィラメント3本が20mm間隔で配置され、前方被覆部16及び後方被覆部18を構成する2枚の不織布に挟まれることにより構成されている。)が設けられている。
前方被覆部16及び後方被覆部18の左右縁部には、腰部シール部Z、Z’が設けられており、腰部シール部Z同士、腰部シール部Z’同士が結合して、パンツ型おむつを形成する。
防漏体22は、厚さ18μmのPE通気性フィルムと目付量12g/m2のPP/PEスパンボンド不織布との積層体である。
吸収体24は、SAPとパルプとの混合物(SAP/パルプ=60/40(質量比))を圧縮して厚さ1.5mmとし、目付量20g/m2のティッシュで被覆したものである。
サーフェスシート26は、目付量20g/m2のPE/PET製エアスルー不織布である。
伸縮部材28は、吸収体24の側縁部が下に垂れ下がるのを防ぐためのものであって、伸縮部材28自体が着用者の肌に直接接触する必要はない。
また、Sパートの前方被覆部16及び後方被覆部18の下面と、Rパートの折り畳まれた伸縮部材28とが、それぞれ、Rパート-前端結合部86及びRパート-後端結合部88で、結合されている。
これにより、SパートとRパートとは、一体化している。SパートとRパートとの前方及び後方の結合は、底面結合部84での結合を補強する役割も果たしている。
吸収体物品101の着用時には、少なくとも一部に伸縮性を有する左右一対の頭部10のみが着用者の肌に接触することになり、吸収体24を含むRパートは着用者の肌とは確実に離間する。
以下に説明する吸収体物品102の各部材の大きさは、Mサイズである場合の一例であり、適宜変更することができるものであり、また、吸収体物品のサイズが異なれば、当然各部材の大きさも変わってくる。また、以下に説明する吸収体物品102の各部材の大きさは、特に記載のない限り、緊張状態のものである。
キャナルシート部材は、全長が370mm、全幅が120mmである。左右一対の頭部10kの幅は、15mmである。
前方被覆部16bは、全長が70mmである。後方被覆部18bは、全長が90mmである。
吸収体24iは、長方形状であり、全長が340mm、全幅が110mmである。
キャナル部材14rの前後端部の下面(より具体的には、左右一対の頭部10kの内側延長部58の結合部78aより外側の部分の下面)と前方被覆部16b及び後方被覆部18bの上面とは、それぞれ、キャナル部-前端結合部80b及びキャナル部-後端結合部82bでホットメルト接着剤により帯状に連続的に結合し、防漏性を有するように一体化されている。
液透過性のキャナルシート12hが有する細孔は、キャナルシート12hの上側から吸収体24iの表面に体液を移送する通路として機能する。
後方被覆部18bの左右両側には、着脱部材30b(ベルクロテープ(雄))が設けられている。前方被覆部16bの下面には、着脱部材30bと互いに着脱自在となるように、着脱部材(図示せず)が設けられている。これにより、吸収体物品102は、テープ型おむつとなっている。
防漏体22eは、厚さ18μmのPE通気性フィルムと目付量12g/m2のPP/PEスパンボンド不織布との積層体である。
吸収体24iは、SAPとパルプとの混合物(SAP/パルプ=60/40(質量比))を圧縮して厚さ1.5mmとし、目付量20g/m2のティッシュで被覆したものである。
コアラップシート27は、目付量13g/m2の表面親水化処理を施したPP製のスパンボンド不織布である。
また、Sパートの前方被覆部16b及び後方被覆部18bの下面と、防漏体22eの上側に折り畳まれた左右縁部(吸収体24i及びコアラップシート27の存在しない部分)とは、それぞれ、Rパート-前端結合部86a及びRパート-後端結合部88aで、結合されている。
さらに、Sパートの左右一対の頭部10kの内側延長部58の下面と、防漏体22eの上側に折り畳まれた左右縁部(吸収体24i及びコアラップシート27の存在しない部分)とは、股下部Cにおいて、Sパート-Rパート側縁結合部94aで、結合されている。
これにより、SパートとRパートとは、一体化している。SパートとRパートとの前方及び後方の結合並びに左右縁部での結合は、底面結合部84gでの結合を補強する役割も果たしている。
吸収体物品102の着用時には、少なくとも一部に伸縮性を有する左右一対の頭部10kのみが着用者の肌に接触することになり、吸収体24iを含むRパートは着用者の肌とは確実に離間する。
外側延長部60は、前方被覆部16b及び後方被覆部18bのそれぞれと、キャナル部-前端結合部80c及びキャナル部-後端結合部82cで結合している。
外側延長部60は、防漏体22eと、Sパート-Rパート側縁結合部94bで結合している点で異なる。
図13に示される吸収体物品103は、図12に示される本発明の吸収体物品102と比べて、左右一対の頭部10lの左右方向への移動の自由度が大きい。
以下に説明する吸収体物品104の各部材の大きさは、スーパーBigサイズである場合の一例であり、適宜変更することができるものであり、また、吸収体物品のサイズが異なれば、当然各部材の大きさも変わってくる。また、以下に説明する吸収体物品104の各部材の大きさは、特に記載のない限り、緊張状態のものである。
キャナルシート部材は、全長が570mm、全幅が140mmである。キャナルシート12の折り畳み部分を拡げた幅は、220mmである。左右一対の頭部10の幅は、20mmである。
前方被覆部16は、全長が130mmである。後方被覆部18は、全長が160mmである。
吸収体24は、股下部Cにおいて幅が狭くなっている砂時計状であり、全長が430mm、全幅が最大170mm、最小90mmである。
Rパートのサーフェスシート26の前端及び後端においては、それぞれ、左右方向の3箇所に、着脱部材30c(ベルクロテープ(雄))が設けられている。
Sパートの前方被覆部16及び後方被覆部18においては、図示しないが、それぞれ、下面に、着脱部材30cと着脱自在である着脱部材(TLZ(雌))が設けられている。
Rパートの着脱部材30cが着脱自在に結合する位置は、Sパートの前方被覆部16の前端から35mm程度後側、及び、後方被覆部18の後端から35mm程度前側である。
また、各実施形態における各部の構成を任意に組み合わせて、別の実施形態とすることもできる。
11 弾性糸
11a、11b、11d 発泡部材
11c ゴムシート
12、12a、12b、12c、12d、12e、12f、12g、12h キャナルシート
14、14a、14b、14c、14d、14e、14f、14g、14h、14i、14j、14k、14l、14m、14n、14o、14p、14q、14r キャナル部材
15 液不透過性フィルム
15a、15b 液不透過性発泡部材
15c 吸液性発泡部材
15d 親水性嵩高ウェブ
16、16a、16b 前方被覆部
18、18a、18b 後方被覆部
21 シャーリングギャザー
22、22a、22b、22c、22d、22e 防漏体
24、24a、24b、24c、24d、24e、24f、24g、24h、24i 吸収体
26、26a、26b、26c サーフェスシート
27 コアラップシート
28、28a、28b 伸縮部材
30、30a、30b、30c 着脱部材
32 キャナル底面部
34 キャナル左側面部
36 キャナル右側面部
38 左側被覆部
42、42a 粘着部材
44 前方ポケット部
46 後方ポケット部
48 拡散シート
50 前方スリット
52 前部スリット群
54 後方スリット
56 後部スリット群
58 内側延長部
60 外側延長部
80、80a、80b、80c キャナル部-前端結合部
82、82a、82b、82c キャナル部-後端結合部
84、84a、84b、84c、84d、84e、84f、84g 底面結合部
86、86a Rパート-前端結合部
88、88a Rパート-後端結合部
92、92a 側面結合部
94、94a、94b Sパート-Rパート側縁結合部
100、100a、100b、100c、100d、100e、100f、101、102、103、104 吸収体物品
C 股下部
F 前身頃
R 後身頃
RP 身体非接触パート
SP 身体接触パート
Z、Z’ 腰部シール部
Claims (15)
- 前後方向に延在し、少なくとも一部に伸縮性を有する左右一対の頭部と、前記左右一対の頭部に左右両縁が結合し、中央部が着用時に下側に垂れ下がるキャナルシートとを有する、キャナル部材と、
着用時に、前記キャナル部材の前記頭部が着用者の肌に接触するように、前記キャナル部材を着用者の身体に固定する、固定部材と
を有する、身体接触パートと;
体液の漏れを防ぐシート状の防漏体と、
前記防漏体の上側に配置された体液を吸収しうる吸収体と
を有する、身体非接触パートと
を具備し、
前記キャナルシートの上側から前記吸収体の表面に体液を移送する通路が設けられており、
前記キャナルシートの下面の一部と前記吸収体の表面の一部とが結合しており、
着用時に、前記吸収体が着用者の肌と離間した状態を保つようにされており、
着用者が体液を排出した場合、排出された体液が、前記キャナルシートの上側に受容され、その後、前後方向に移動しつつ、前記キャナルシートの上側から前記通路を通じて前記吸収体の表面に移送される、吸収体物品。 - 前記キャナルシートの下面の左右方向の中央部の一部と、前記吸収体の表面の一部とが、底面結合部において結合している、請求項1に記載の吸収体物品。
- 前記底面結合部が、股下部を含む領域で、前後方向に延在する、請求項2に記載の吸収体物品。
- 前記キャナルシートの下面の左右縁部付近の一部と、前記吸収体の表面の一部とが、左右の側面結合部において結合している、請求項2又は3に記載の吸収体物品。
- 前記左右の側面結合部が、股下部を含む領域で、前後方向に延在する、請求項4に記載の吸収体物品。
- 前記固定部材が、前身頃を被覆する前方被覆部と、後身頃を被覆する後方被覆部とを有する、請求項1~5のいずれかに記載の吸収体物品。
- 前記前方被覆部と前記後方被覆部とを着脱可能に結合させる着脱部材を有する、請求項6に記載の吸収体物品。
- 前記前方被覆部と前記後方被覆部とが一体化し、着用時に、着用者の腹部の周囲を被覆する、請求項6に記載の吸収体物品。
- 前記キャナルシートの少なくとも一部が液不透過性である、請求項1~8のいずれかに記載の吸収体物品。
- 前記固定部材の少なくとも一部が液不透過性である、請求項1~9のいずれかに記載の吸収体物品。
- 前記防漏体の左右縁部に、その前後方向の長さを縮める作用を奏する伸縮体を有する、請求項1~10のいずれかに記載の吸収体物品。
- 前記防漏体が、着用時に、少なくとも股下部において、下側に凸状の形状となる、請求項1~11のいずれかに記載の吸収体物品。
- 着用時に、前記吸収体の表面と着用者の肌との距離が5mm以上となる、請求項1~12のいずれかに記載の吸収体物品。
- 前記身体接触パートと前記身体非接触パートとが着脱可能である、請求項1~13のいずれかに記載の吸収体物品。
- 請求項1~14のいずれかに記載の吸収体物品を製造する、吸収体物品の製造方法であって、
前記身体接触パート及び前記身体非接触パートをそれぞれ形成する工程と、
その後、前記身体接触パートと前記身体非接触パートとを結合させる工程と
を有する、吸収体物品の製造方法。
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KR1020167007785A KR101773355B1 (ko) | 2013-09-30 | 2013-09-30 | 흡수체 물품 및 그 제조 방법 |
EP13894573.8A EP3053556A4 (en) | 2013-09-30 | 2013-09-30 | Absorber article and method for manufacturing same |
PCT/JP2013/076513 WO2015045145A1 (ja) | 2013-09-30 | 2013-09-30 | 吸収体物品及びその製造方法 |
US15/023,274 US10470942B2 (en) | 2013-09-30 | 2013-09-30 | Absorbent article and production method thereof |
JP2013544935A JP5828907B2 (ja) | 2013-09-30 | 2013-09-30 | 吸収体物品及びその製造方法 |
CN201380079838.8A CN105579004B (zh) | 2013-09-30 | 2013-09-30 | 吸收体物品及其制造方法 |
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PCT/JP2013/076513 WO2015045145A1 (ja) | 2013-09-30 | 2013-09-30 | 吸収体物品及びその製造方法 |
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US (1) | US10470942B2 (ja) |
EP (1) | EP3053556A4 (ja) |
JP (1) | JP5828907B2 (ja) |
KR (1) | KR101773355B1 (ja) |
CN (1) | CN105579004B (ja) |
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Cited By (1)
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CN108883007A (zh) * | 2016-03-31 | 2018-11-23 | 株式会社光洋 | 一次性内裤及一次性内裤的制造方法 |
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ES2819181T3 (es) | 2014-02-28 | 2021-04-15 | Attends Healthcare Products Inc | Artículo absorbente con núcleo absorbente plegado de capa múltiple |
MX2020012801A (es) | 2018-05-28 | 2021-03-25 | Attends Healthcare Products Inc | Laminado con capa de sequedad para articulos absorbentes. |
EP3890672A1 (en) * | 2018-12-05 | 2021-10-13 | Attends Healthcare Products, Inc. | Absorbent articles having absorbent leg cuffs |
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JP5828907B2 (ja) | 2015-12-09 |
US20160235600A1 (en) | 2016-08-18 |
US10470942B2 (en) | 2019-11-12 |
CN105579004B (zh) | 2019-04-30 |
CN105579004A (zh) | 2016-05-11 |
JPWO2015045145A1 (ja) | 2017-03-02 |
KR20160047528A (ko) | 2016-05-02 |
EP3053556A4 (en) | 2017-05-31 |
EP3053556A1 (en) | 2016-08-10 |
KR101773355B1 (ko) | 2017-08-31 |
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