WO2019131007A1 - パンツ型吸収性物品 - Google Patents

パンツ型吸収性物品 Download PDF

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Publication number
WO2019131007A1
WO2019131007A1 PCT/JP2018/044489 JP2018044489W WO2019131007A1 WO 2019131007 A1 WO2019131007 A1 WO 2019131007A1 JP 2018044489 W JP2018044489 W JP 2018044489W WO 2019131007 A1 WO2019131007 A1 WO 2019131007A1
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WO
WIPO (PCT)
Prior art keywords
pants
absorbent article
joint
type absorbent
crotch
Prior art date
Application number
PCT/JP2018/044489
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
圭 村上
賢一 笹山
唯 永山
大貴 近藤
Original Assignee
ユニ・チャーム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ユニ・チャーム株式会社 filed Critical ユニ・チャーム株式会社
Priority to CN201880077450.7A priority Critical patent/CN111491596B/zh
Publication of WO2019131007A1 publication Critical patent/WO2019131007A1/ja

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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
    • 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
    • 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
    • A61F13/496—Absorbent articles specially adapted to be worn around the waist, e.g. diapers in the form of pants or briefs

Definitions

  • the present invention relates to a pant-type absorbent article.
  • the pant-type absorbent article has an absorbent main body provided with an absorbent core which absorbs excrement fluid such as urine. And the leak-proof wall part which prevents that the excretion absorbed by the absorptive core leaks to the outer side of a diaper is provided along the circumference of a wearer's leg on the both sides of the width direction of this absorptive body.
  • Patent Document 1 includes a pair of leak-barriers which are fixed inward at the outer side than the widthwise end of the absorbent core and which stands up on the skin of the wearer when the absorbent article is worn. An absorbent article is disclosed.
  • this leak-proof wall part is joined to the exterior member in the both ends of the longitudinal direction of an absorptive main body.
  • a leak-proof wall part is a wearer's crotch part (hip part, standing up on the skin side in a field between the both ends of a longitudinal direction based on elasticity of an elastic member which expresses elasticity in a longitudinal direction. Fit to).
  • the leak-proof wall standing up on the skin side may bite in or rub on the skin, which may cause discomfort to the wearer. .
  • the dorsal side of the wearer at the most protruding part of the buttocks, it is easy to cause discomfort due to the leak-proof wall hitting.
  • the present invention has been made in view of the above problems, and the object of the present invention is to provide a pants-type absorbent article having a leak-proof wall portion which is less likely to cause a wearer to feel discomfort in the buttocks. To provide.
  • the main invention for achieving the above object has an absorbent core which has vertical directions, horizontal directions and front-rear directions which cross each other, and is arranged along the vertical directions, and the horizontal direction of the absorbent core
  • the absorbent main body includes a pair of leak-proof wall portions that rise from the both sides to the skin side of the wearer, and is folded back and forth at the lower end in the vertical direction, and an exterior joined to the non-skin side of the absorbent main body
  • the front side portion has a front side joint portion joining the pair of leak preventing wall portions and the exterior member at an upper end portion of the
  • a pant-type absorbent article provided with a leak-proof wall portion which is less likely to cause a wearer to feel discomfort in the buttocks.
  • FIG. 1 is a perspective view of a shorts-type disposable diaper 1; It is the schematic plan view which looked at the diaper 1 of the expansion
  • FIG. FIG. 6 is a schematic cross-sectional view showing an AA cross section and an FF cross section of FIG. 5; FIG. 6 is a schematic cross-sectional view of the DD cross section of FIG. 5; FIG.
  • FIG. 6 is a schematic cross-sectional view showing a cross section taken along line CC of FIG. 5;
  • FIG. 6 is a schematic cross-sectional view showing an EE cross section of FIG. 5;
  • FIG. 10A is a schematic cross-sectional view in the left-right direction showing the wearing state of the diaper 100 having the conventional leak-proof wall portion 140 without the intermediate joint portion 73.
  • FIG. 10B is a schematic cross-sectional view in the left-right direction showing the wearing state of the diaper 1 of the present embodiment.
  • a pair of absorbent cores having vertical directions, lateral directions, and longitudinal directions which cross each other, and standing on the skin side of the wearer from both sides in the lateral direction of the absorbent core and absorbent cores arranged along the vertical directions
  • a pants-type absorbent article comprising: a leak-proof wall portion; and an absorbent main body bent back and forth at the lower end in the vertical direction, and an exterior member joined to the non-skin side of the absorbent main body.
  • the absorbent main body has a front side portion which is a portion bent to the front side in the front-rear direction, and a rear side portion which is a portion bent to the rear side in the front-rear direction,
  • the rear side portion is an end fixing portion that fixes the pair of leak preventing wall portions so as not to stand up in the upper end portion in the vertical direction and the region outside the absorbent core in the left and right direction.
  • the front side is the upper end of the front side And a front side joint portion joining the pair of leak-proof wall portions and the exterior member, and the rear side portion has the pair of leak-proof wall portions and the exterior member at an upper end portion of the rear side portion. It has a rear side joint portion to be joined, and an intermediate joint portion to join the pair of leakproof wall portions and the exterior member between the upper end portion and the lower end portion in the vertical direction.
  • Pants type absorbent article characterized by the above.
  • an intermediate joint is provided at a position where it comes into contact with the area with the largest protrusion in the buttocks of the wearer when worn, and the rising height of the leakproof wall at the intermediate joint As a result, it is less likely that the leak preventing wall bites into the skin and the like. This can make the wearer less likely to feel discomfort.
  • the front side has a joint that joins the leakproof wall and the exterior member between the front joint and the lower end in the vertical direction.
  • the rear side portion does not have a joint that joins the leakproof wall and the exterior member between the intermediate joint and the lower end in the vertical direction. desirable.
  • the leak-barrier portion comes to stand on the skin side of the wearer in a region located from the lower abdomen to the crotch of the wearer. Therefore, in the crotch region, the leakproof wall can be easily fitted to the buttocks of the wearer, and the leakproof wall can suppress leakage of excrement such as urine to the outside.
  • the rear side portion is a joint that joins the leakproof wall and the exterior member between the intermediate joint and the rear joint in the vertical direction. It is desirable not to have
  • the leak-barrier wall portion rises to the wearer's skin side in the region above the buttocks of the wearer. Therefore, it is easy for the leak-proof wall to fit along the roundness of the buttocks of the wearer, and even if the wearer sleeps on the back with the diaper worn, excrement is externally on the buttocks side It is possible to suppress leakage.
  • Such a pants-type absorbent article comprising: an interior-exterior junction joining the absorbent main body and the exterior member; and the interior-exterior junction inside the absorbent core at the lower end in the vertical direction. It is desirable that the part is formed.
  • the position where the width in the left-right direction of the absorbent core is the narrowest in the vertical direction is closer to the front joint than the intermediate joint.
  • the rising height of the leakproof wall increases as the width in the left-right direction of the absorbent core becomes narrower, the length in the left-right direction of the absorbent core is the narrowest
  • the rising height of the leakage preventing wall portion can be increased in the vicinity of the wearer's urination port by arranging the portion which is near the front joint near the wearer's urination port.
  • the length of the front joint in the vertical direction be longer than the length of the intermediate joint.
  • the front side joint portion by forming the front side joint portion long in the vertical direction, the front side joint portion easily fits flat along the wearer's abdomen.
  • the intermediate joint short in the vertical direction it is possible to make it difficult for the wearer to have a feeling of foreign matter while restricting the rising of the leakproof wall at the portion where the buttocks project.
  • the length of the intermediate joint in the vertical direction be longer than the length of the rear joint.
  • the length of the rear side joint portion disposed in the curved surface region having a large undulation above the buttocks of the wearer is shorter than that of the intermediate joint portion, whereby the rear side joint is formed.
  • the contact area between the part and the skin becomes smaller, and it becomes easy to fit without interfering with the roundness of the buttocks.
  • the lower end position of the intermediate joint in the vertical direction is on the upper side than the area where the width in the left-right direction of the absorbent core is narrower It is desirable that the pants-type absorbent article be characterized in that.
  • the lower side of the lower end of the intermediate joint in the rear side of the absorbent body is the riseable range of the leakproof wall.
  • the riseable range of the leakproof wall includes the constricted part.
  • the area in which the rising height of the leakage preventing wall portion is high can be made wide. Therefore, the leak-barrier portion rises high in a wide range of the wearer's crotch.
  • the width in the left-right direction of the intermediate joint portion is one end of the leak-proof wall portion when the leak-proof wall portion is extended in the left-right direction; It is desirable that it is 1/2 or less of the distance between one end of the absorbent body.
  • pant-type absorbent article it is possible to limit the rising height of the leak-barrier wall to half of the maximum at the intermediate joint. As a result, the skin contact of the wearer with the buttocks becomes soft, making it difficult to cause discomfort.
  • the intermediate joint portion be provided at an inner end portion of the leakproof wall portion in the left-right direction.
  • the rising starting point of the leak-proof wall portion is positioned inward in the left-right direction, and the width of the absorbent main body in the left-right direction is not too wide. It becomes easy to suppress that it protrudes outside from the rotation opening etc.
  • the pants-type absorbent article which is between the front bonding portion and the intermediate bonding portion in the longitudinal direction of the absorbent body, on the skin side of the end fixing portion in the thickness direction. It is desirable that a leak-barrier elastic member which is expanded and contracted in the longitudinal direction is provided.
  • the leak-proof wall can easily rise to the skin side in the crotch. Further, the rigidity of the end edge portion of the leakproof wall portion is increased, and the leakproof wall portion can be prevented from being bent or fallen halfway.
  • the exterior member includes a ventral-side belt portion, a back-side belt portion, and a crotch member connecting the ventral-side belt portion and the back-side belt portion, and the crotch portion
  • the member has a crotch elastic member extending and contracting along the leg opening, and a spring constant per unit area in a portion where the leak preventing wall elastic member is provided in the leak preventing wall portion is the crotch portion. It is desirable that the spring constant per unit area in a portion where the crotch elastic member is provided among members is larger than the spring constant.
  • the contraction force by the leak-barrier elastic member becomes larger than the contraction force by the crotch elastic member, and the adhesion of the leak-barrier in the buttocks of the wearer is improved. It becomes difficult to produce excretory leakage etc.
  • the crotch member has a crotch stretch region that extends and contracts along the vertical direction, and a unit area in a portion of the crotch member where the crotch elastic member is provided. It is desirable that the spring constant of the hit be greater than the spring constant per unit area of the crotch elastic region.
  • the contraction force by the crotch elastic member becomes larger than the contraction force by the crotch elastic region, and a gap is generated at the leg opening while bringing the crotch member into close contact with the crotch of the wearer. It can be difficult.
  • FIG. 1 is a schematic perspective view of the diaper 1.
  • FIG. 2 is a schematic plan view of the unfolded and stretched diaper 1 as viewed from the non-skin side.
  • FIG. 3 is a schematic cross-sectional view taken along line II of FIG.
  • the “extended state” of the diaper 1 refers to a state in which the diaper 1 is extended without wrinkles, and the dimensions of the members constituting the diaper 1 (for example, the exterior member 20 described later) match the dimensions of the single member Or, it is in a state of being stretched to a length close to that.
  • the diaper 1 has an up-down direction, a left-right direction, and a front-back direction intersecting with each other, and has a thickness direction in which the respective members are laminated as shown in FIG. 3.
  • the side of the wearer's waist is the upper side
  • the side of the wearer's crotch is the lower side.
  • the front side of the wearer is referred to as the front side
  • the back side of the wearer is referred to as the back side.
  • the side in contact with the body of the wearer is the skin side
  • the other side is the non-skin side.
  • the diaper 1 has the longitudinal direction and width direction which mutually cross
  • the longitudinal direction is a direction along the vertical direction
  • the width direction is the same as the lateral direction.
  • the diaper 1 has the absorptive main body 10 which is rectangular shape planar view, and the exterior member 20 located in the non-skin side of the absorptive main body 10.
  • the exterior member 20 includes a belly-side exterior member 21 (front belt portion 21) positioned on the front side in the front-rear direction in FIG. 1 and a back-side exterior member 22 (rear belt portion 22) positioned on the rear side in the front-rear direction. And a crotch exterior member 23 (crotch member 23) connecting them.
  • the above members adjacent in the thickness direction are joined by an adhesive or the like.
  • the front side belt portion 21 is positioned at one end side in the longitudinal direction of the absorbent main body 10, and the rear side belt portion 22 is positioned at the other end side in the longitudinal direction of the absorbent main body 10.
  • the side on which the front belt portion 21 is positioned is referred to as the front side
  • the side on which the rear belt portion 22 is positioned is referred to as the rear side. That is, the front side belt portion 21 is located at the front upper end portion of the absorbent main body 10, and the rear side belt portion 22 is located at the rear upper end portion of the absorbent main body 10.
  • the crotch member 23 is positioned closer to the skin than the front side belt portion 21 and the rear side belt portion 22.
  • the exterior member 20 is comprised by three members in the diapar 1 of this embodiment, it does not restrict to this.
  • the front belt portion 21, the rear belt portion 22, and the crotch member 23 may be one member.
  • a configuration without the crotch member 23 or a configuration in which a member different from the exterior member 20 is further laminated on the non-skin side of the exterior member 20 may be used.
  • the absorbent main body 10 is folded back and forth at a predetermined position CL in the longitudinal direction, and both sides in the lateral direction of the front belt portion 21 and both sides in the lateral direction of the rear belt portion 22
  • the parts are joined by welding or the like to form the pants-type shown in FIG. That is, the longitudinal direction of the absorbent main body 10 is along the vertical direction of the diaper 1, and the front belt portion 21 and the rear belt portion 22 are annularly connected to form the waist opening 1a and the pair of leg openings 1b.
  • an end joint region 24 a region where the front belt portion 21 and the rear belt portion 22 are joined.
  • the absorbent main body 10 (absorbent core 11) bent at the predetermined position CL a portion bent to the front side is referred to as “front side portion 10F”, and a portion bent to the rear side It is referred to as “the rear side 10R”. That is, in the longitudinal direction of FIG. 2, the area on the front side of the predetermined position CL of the absorbent main body 10 (the absorbent core 11) is called “front side 10 F”, and the area on the rear side of the predetermined position CL is “rear side It may be called "part 10R".
  • the absorbent main body 10 includes an absorbent core 11, a top sheet 12 positioned on the skin side of the absorbent core 11, and a back sheet 13 positioned on the non-skin side of the absorbent core 11.
  • FIG. 4 is a schematic plan view of the absorbent main body 10 in the unfolded and stretched state as viewed from the skin side.
  • the absorbent core 11 is a member that absorbs and holds excretory fluid such as urine, and is formed of, for example, a liquid absorbent fiber such as pulp fiber mixed with a superabsorbent polymer (SAP).
  • the absorbent core 11 of the present embodiment has a narrowed portion 11 c having a narrow width in the left-right direction between the front end and the rear end in the longitudinal direction, and the plan view as shown in FIG. 4 It has a substantially hourglass shape.
  • various low basis weight regions which are regions in which the basis weight is lower than that of the surrounding, are formed in the absorbent core 11. Details of the low basis weight region will be described later.
  • the outer peripheral surface of the absorbent core 11 may be covered by a liquid-permeable sheet such as tissue paper or non-woven fabric.
  • the top sheet 12 is a liquid-permeable sheet, and for example, a hydrophilic air through non-woven fabric or a spun-bonded non-woven fabric is used.
  • the back sheet 13 has a two-layer structure of a liquid impermeable sheet 13a and a hydrophobic sheet 13b disposed on the non-skin side.
  • the liquid impermeable sheet 13a for example, a resin film or the like is used
  • the hydrophobic sheet 13b for example, a hydrophobic non-woven fabric having flexibility is used.
  • the back sheet 13 may have a single layer structure of the liquid impermeable sheet 13a.
  • Side sheets 14 are provided on both sides of the back sheet 13 in the left-right direction.
  • the side sheet 14 extends outward in the left-right direction from both ends 11 es, 11 es in the left-right direction of the absorbent core 11, and with the both ends 10 es, 10 es in the left-right direction of the absorbent main body 10 folded back
  • a pair of leakproof walls 40 are formed by being folded back to the skin side in the longitudinal direction.
  • Leakproof wall elastic members 41 and 42 such as thread rubber are fixed to the leakproof wall portion 40 in a state of being extended along the longitudinal direction (vertical direction) of the absorbent main body 10.
  • the leakproof wall portion 40 may be formed by extending the back sheet 13 (liquid permeable sheet 13 b) to the outside in the left-right direction of the absorbent core 11 without providing the side sheet 14. .
  • the detailed structure of the leak preventing wall portion 40 will be described later.
  • the front side belt portion 21 and the rear side belt portion 22 are, as shown in FIG. 2, respectively, in a waistline area 211, 221 where the end joint area 24 is located in the vertical direction and a lower side than the waistline area 211, 221
  • the crotch region 212, 222 is provided.
  • the waistline regions 211 and 221 have a rectangular shape in plan view.
  • the crotch region 212, 222 has a substantially trapezoidal shape, and the outer edge portion has inclined portions 212s, 222s that are inclined inward in the left-right direction toward the lower side in the up-down direction. That is, the crotch region 212, 222 has a narrower width toward the lower side.
  • the crotch-side region 222 of the back side belt portion 22 is larger than the crotch-side region 212 of the front side belt portion 21 so that the buttocks of the wearer can be widely covered.
  • the front side belt portion 21 and the rear side belt portion 22 are, as shown in FIG. 3, respectively, skin side sheets 213 and 223 located on the skin side, and non-skin side sheets 214 and 224 located on the non-skin side. It has an elastic nonwoven fabric 215, 225 which is located between them and has elasticity at least in the left-right direction of the diaper 1.
  • the skin side sheets 213 and 223 and the non-skin side sheets 214 and 224 are preferably flexible sheets, and for example, a spunbond nonwoven fabric or an SMS nonwoven fabric is used.
  • the stretchable non-woven fabric 215, 225 has, for example, a polyurethane elastomer which is a thermoplastic elastomer fiber having elasticity, and a polypropylene (PP) of a polyolefin resin which is a thermoplastic resin fiber having non-elasticity. And non-woven fabric that has been subjected to an appropriate stretching process such as gear stretching. By this stretching process, the stretchable nonwoven fabrics 215, 225 have stretchability in a predetermined direction.
  • the stretching may be performed in directions orthogonal to each other, or may be performed only in a predetermined direction. When stretching is performed only in a predetermined direction, stretchability in a predetermined direction is expressed, but since all fibers are not necessarily oriented along the predetermined direction, stretchability in the direction orthogonal to the predetermined direction is also possible. Is expressed.
  • the skin side sheets 213 and 223, the non-skin side sheets 214 and 224, and the stretchable non-woven fabric 215 and 225 are joined by a plurality of scattered portions 25a and 25b (for example, a region to which ultrasonic welding is performed) For example, compared with the case where it joins by the adhesive which hardens
  • the elastic non-woven fabric 215, 225 shrinks between the welded portions 25a, 25b, causing the skin side sheets 213, 223 and the non-skin side sheets 214, 224 to curve and protrude outward in the thickness direction. Do. That is, since the skin side sheets 213 and 223 and the non-skin side sheets 214 and 224 swell between the welded portions 25a and 25b, the touch becomes softer and it is possible to give the user a visually soft impression.
  • the front belt portion 21 and the rear belt portion 22 have stretchability in the left-right direction (and the vertical direction) of the diaper 1 as a whole.
  • An area in the front belt portion 21 that exhibits elasticity in the left-right direction is referred to as a front elastic area 21s
  • an area in the rear belt unit 22 that expresses elasticity in the left-right direction is referred to as a rear elastic area 22s (see FIG. See the shaded area in 2).
  • welding part 25a, 25b is dotted at comparatively narrow intervals as shown in FIG. Therefore, in the diaper 1 of this embodiment, since it extends in many directions and fine swelling (wrinkle) occurs, and generation of one-way wrinkles (longitudinal wrinkle etc.) peculiar to the diaper can be prevented. Aesthetic is good.
  • the thickness of the stretchable film is substantially uniform, the swelling of the skin side sheets 213 and 223 and the non-skin side sheets 214 and 224 between the welded portions 25a and 25b is easily crushed.
  • the thickness of the stretchable non-woven fabric 215, 225 is increased between the welded portions 25a, 25b, the swelling of the skin side sheets 213, 223 and the non-skin side sheets 214, 224 is hardly crushed, and the softness and beauty of the touch You can keep the sex.
  • the welded portions 25a and 25b are formed in the first dotted area X overlapping in the thickness direction with the absorbent main body 10 and the second dotted area Y other than that.
  • the ratio of the welded portions 25a and 25b per unit area may be made different.
  • substantially rectangular welds 25a inclined 45 degrees or -45 degrees with respect to the left-right direction are alternately arranged.
  • circular welds 25b are arranged in a zigzag.
  • the area of the welded portion 25b per unit area is smaller in the second dotted area Y than in the first dotted area X. Therefore, in the waistline regions 211 and 221 where problems such as sweat and stuffy are likely to occur, it is possible to suppress the air permeability from being hindered by the welded portion 25 b, and it is possible to ensure appropriate air permeability.
  • the contraction of the front belt portion 21 and the rear belt portion 22 can be appropriately suppressed, and the contraction of the absorbent main body 10 in the left-right direction can be reduced.
  • a plurality of waist elastic members 26 such as thread rubber are disposed in a region along the waist opening 1a.
  • a plurality of leg elastics 27 such as thread rubber are disposed in a region along the leg openings 1b. That is, since the waist elastic members 26 and the leg elastic members 27 firmly adhere to the body of the wearer by the waist elastic members 26 and the leg elastics 27, the diaper 1 can be prevented from slipping off or leaking from the legs. On the other hand, since the other portions gently fit the wearer's body over the entire surface by the stretchable nonwoven fabric 215, 225, the feeling of tightening is reduced.
  • the crotch member 23 has a substantially hourglass shape in plan view curved inward in the left-right direction at a central portion in the longitudinal direction. Further, as shown in FIG. 3, the crotch member 23 is positioned between the skin side sheet 231 located on the skin side and the non-skin side sheet 232 located on the non-skin side, and the up-down direction of the diaper 1.
  • the stretchable non-woven fabric 233 which imparts stretchability to (the longitudinal direction of the absorbent main body 10) is provided. These sheets 231 to 233 are joined by a plurality of welds (for example, welds 25b similar to the second dotted area Y).
  • welds for example, welds 25b similar to the second dotted area Y.
  • a region in which elasticity in the vertical direction is developed is taken as a crotch elastic region 23s (see FIG. 2).
  • the absorbent core 11 can be in close contact with the crotch of the wearer, and the drooping of the diaper 1 can be suppressed even if the weight of the absorbent core 11 increases due to excretion.
  • a plurality of crotch elastic members 28 are disposed in a region along the leg opening 1b of the crotch member 23, and the crotch member 23 is in close contact with the wearer's leg.
  • FIG. 5 is a plan view showing a bonded state of the absorbent main body 10 (the leak preventing wall portion 40) and the exterior member 20.
  • FIG. 6 is a schematic cross-sectional view showing an AA cross section and an FF cross section of FIG.
  • FIG. 7 is a schematic cross-sectional view showing the DD cross section of FIG.
  • FIG. 8 is a schematic cross-sectional view showing the CC cross section of FIG.
  • FIG. 9 is a schematic cross-sectional view showing the EE cross section of FIG. 7 to 9, a cross-sectional view of the state before the leak-barrier portion 40 is erected is shown on the upper side, and a cross-sectional view of the state where the leak-barrier portion 40 is erected is shown on the lower side.
  • the leakage preventing walls 40 are provided at both ends in the left-right direction of the absorbent main body 10.
  • the side sheet 14 extending outside the both ends 11 es and 11 es of the absorbent core 11 in the left and right direction corresponds to the left and right direction of the absorbent main body 10. It is formed by being folded back inside in the left and right direction at both ends 10es and 10es of. And this leak-proof wall part 40 is joined to the skin side of exterior member 20 in a predetermined field.
  • the leakage preventing wall portion 40 is joined to the front side belt portion 21 by the front side joining portion 71 formed of an adhesive such as a hot melt adhesive at the upper end portion of the absorbent main body 10 (See the cross section AA in FIG. 6).
  • the leakage preventing wall portion 40 is joined to the rear side belt portion 22 by the rear side joining portion 72 formed of an adhesive such as a hot melt adhesive at the upper end portion of the absorbent main body 10 (See cross section F-F in FIG. 6).
  • the leakage preventing wall portion 40 is joined to the rear side belt portion 22 by the portion 73 (see a cross section DD in FIG. 7).
  • a front end fixing portion 81 is provided which joins and fixes the facing surfaces of the side sheets 14 stacked in the thickness direction.
  • a rear end fixing portion 82 is provided in the upper end portion in the vertical direction of the absorbent main body 10 and in the region outside the absorbent core 11 in the left-right direction.
  • the leakage preventing wall portion 40 is also worn when the diaper 1 is worn. Does not stand on the skin side.
  • the side sheet 14 is contracted in the vertical direction (longitudinal direction) by the stretchability of the leakproof wall elastic members 41 and 42 arranged along the vertical direction (longitudinal direction of the absorbent main body 10). As shown in FIG. 7 to FIG. 9, the leak-proof wall portion 40 rises on the skin side.
  • the leakage preventing wall 40 is not joined to the exterior member 20 in a region where the leakage preventing wall 40 is joined to the exterior member 20 by the front side joint 71, the rear side junction 72, and the intermediate joint 73.
  • the rising height of the leakproof wall portion 40 is different.
  • the rising start point of the leakproof wall portion 40 is the lateral end 73es of the middle joint portion 73 in the left-right direction, and the height when the leakproof wall portion 40 rises is hD.
  • the rising start point of the leakage preventing wall 40 is the absorbent core 11.
  • the height when the leak preventing wall portion 40 stands up is hE. Therefore, the rising height hD of the leakproof wall 40 in FIG. 7 is lower than the rising height hE of the leakproof wall 40 in FIG. 9 by the length of the front joint 71 in the left-right direction (hE > HD).
  • the intermediate joint 73 is provided between the front joint 71 and the rear joint 72 to limit the rising height of the leakproof wall 40 in the intermediate joint 73. It is possible to suppress the occurrence of discomfort due to the leakage preventing wall 40 biting in the buttocks of the wearer.
  • FIG. 10A is a schematic cross-sectional view in the left-right direction showing the wearing state of the diaper 100 having the conventional leak-proof wall portion 140 without the intermediate joint portion 73.
  • FIG. 10B is a schematic cross-sectional view in the left-right direction showing the wearing state of the diaper 1 of the present embodiment.
  • the leakproof wall 140 and the exterior member 120 are joined by the front joint 171 and the rear joint 172 provided at both ends of the absorbent main body 110 in the longitudinal direction. It is done.
  • the leakage preventing wall portion 140 rises up in the entire range between the front joint portion 171 and the rear joint portion 172 in the longitudinal direction and fits in the crotch portion of the wearer.
  • the raised leak-barrier wall portion 40 may hit the wearer's body strongly, causing discomfort.
  • an intermediate joint 73 is provided between the front joint 71 and the rear joint 72. And this intermediate
  • no joint for joining the leakproof wall 40 and the exterior member 20 is provided between the front joint 71 and the intermediate joint 73.
  • no joint portion for joining the leakproof wall portion 40 and the exterior member 20 is provided between the front side joint portion 71 and the lower end portion (CL) in the vertical direction.
  • no joint for joining the leakproof wall 40 and the exterior member 20 is provided between the middle joint 73 and the lower end (CL) in the vertical direction.
  • the leak preventing wall portion 40 stands up on the skin side of the wearer.
  • middle junction part 73 is an area
  • the leakproof wall 40 easily fits along the buttocks, and the leakproof wall 40 can suppress leakage of excrement such as urine to the outside.
  • no joint for joining the leakproof wall 40 and the exterior member 20 is provided between the intermediate joint 73 and the rear joint 72.
  • the rear side portion 10R no joint for joining the leakproof wall 40 and the exterior member 20 is provided between the middle joint 73 and the rear joint 72 in the vertical direction. Therefore, in the region between the front joint 71 and the intermediate joint 73, as shown in the EE cross sectional view of FIG.
  • the leak preventing wall portion 40 stands up on the skin side of the wearer.
  • middle junction part 73 and the back side junction part 72 is an area
  • the absorbent main body 10 is joined to the three exterior members 20 of the front side belt portion 21, the rear side belt portion 22, and the crotch portion 23 in the thickness direction. It is done. Specifically, the absorbent main body 10 is joined to the front belt part 21 and the rear belt part 22 via a belt part interior / exterior junction 61 formed of an adhesive such as a hot melt adhesive. Similarly, it is joined to the crotch member 23 through a crotch inner / outer junction 62 formed of an adhesive such as a hot melt adhesive.
  • the crotch interior / exterior junction 62 is at the center in the longitudinal direction of the absorbent main body 10, that is, at the predetermined position CL which is the lower end in the vertical direction of the pants-shaped diaper 1 It is located inside the Therefore, as shown in FIG. 8, in the left-right direction, both ends 11 es of the absorbent core 11 are located outside the both ends 62 es of the crotch inner / outdoor joint portion 62.
  • the leak preventing wall portion 40 rises with the both ends 11 es of the absorbent core 11 as the starting point and the rising height becomes hC. Since the rising height of the leakproof wall 40 is kept high in the crotch, even if the wearer takes a sleeping posture or sits down, it is suppressed that the excrement leaks out in the crotch. It will be easier.
  • a portion where the width in the left-right direction of the absorbent core 11 is the narrowest is located closer to the front bonding portion 71 than the intermediate bonding portion 73.
  • the leakproof wall portion 40 rises on the skin side with the both ends 11es in the left-right direction of the absorbent core 11 as a starting point.
  • the width in the left-right direction of the core 11 is narrower (the length in the left-right direction is shorter), the rising height (hC in FIG. 8) of the leakproof wall 40 is higher.
  • the leak-barrier wall near the urine outlet of the wearer It becomes possible to make the rising height of 40 the highest, and it becomes easy to control urine leakage.
  • the length L 71 of the front side joint portion 71 is longer than the length L 73 of the intermediate joint portion 73 in the vertical direction (longitudinal direction of the absorbent main body 10).
  • the front bonding portion 71 and the middle bonding portion 73 are portions where the rigidity is higher compared to the other regions of the leakproof wall portion 40 by bonding the folded side sheets 14 with an adhesive or the like. It is.
  • FIG. 10B shows, at the time of wear of the diapar 1, the front side junction part 71 is located in a wearer's abdomen, and the intermediate
  • the abdomen has a shape relatively close to a flat surface, so the front joint 71 having high rigidity in the abdomen region is vertically By forming it long, it is easy for the front joint 71 to fit flat along the wearer's abdomen.
  • the intermediate joint 73 is formed shorter in the vertical direction than the front joint 71, so that the rise of the leakproof wall 40 is limited in the region RB of the buttocks, and a sense of foreign matter is caused to the wearer. It can be difficult.
  • the length L 73 of the intermediate joint 73 in the vertical direction is longer than the length L 72 of the rear joint 72.
  • the rear side joint portion 72 is located in a curved region having a large undulation above the buttocks of the wearer. Therefore, by shortening the vertical length L72 of the highly rigid rear joint 72 as much as possible, the contact area between the rear joint 72 and the skin of the wearer is reduced, and interference with the roundness of the buttocks is prevented.
  • the rear joint 72 can be easily fitted.
  • the intermediate joint portion 73 is formed longer than the rear side joint portion 72.
  • the width of the absorbent core 11 in the left-right direction is narrower on the lower side than the lower end position of the intermediate bonding portion 73 in the up-down direction.
  • the start position of the constricted portion 11 c of the absorbent core 11 is below the lower end position of the intermediate bonding portion 73.
  • the rising height of the leakproof wall portion 40 can be increased in the narrow portion 11c of the absorbent core 11 (see FIG. 8).
  • the leakproof wall portion 40 rises in the region between the intermediate joint portion 73 and the front joint portion 71, leakage is prevented by including the constriction portion 11c of the absorbent core 11 in this region. It is possible to widen the region where the rising height of the wall 40 is high. As a result, the leak-barrier portion 40 rises up high in a wide range of the crotch of the wearer, and it becomes easy to suppress the side leakage of the excrement.
  • the length (width) in the left-right direction of the intermediate joint portion 73 is the left-right direction end 40 a of the leak-proof wall portion 40 and the left-right direction of the absorbent core 11 when the leak-proof wall portion 40 is extended in the left-right direction. It is 1/2 or less of the distance between the direction end 11es. If the intermediate joint portion 73 is not provided, the leak preventing wall portion 40 stands up with the end 11 es of the absorbent core 11 in the left and right direction rising up as a starting point, in the leak preventing wall portion 40 in the left and right direction. Since the region having a predetermined width is joined to the exterior member 20 by the intermediate joint portion 73, the rising height of the leakproof wall portion 40 can be limited.
  • the leakproof wall 40 is bent at the left and right ends 10es of the absorbent main body 10, but the length of the intermediate joint 73 in the left and right direction is the absorbability with the left and right ends 40a of the leakproof wall 40 If it is larger than 1/2 of the distance between the core 11 and the left and right ends 11es, the bending position of the leakproof wall 40 is formed outside the end 10es, and the absorbent main body 10 is open around the leg There is a possibility that it may protrude outside from 1b or the leak preventing wall part 40 may not stand up well. Therefore, in the present embodiment, the length in the left-right direction of the intermediate joint 73 is defined as described above.
  • the intermediate bonding portion 73 overlaps the absorbent core 11 in the left-right direction. That is, the intermediate joint portion 73 is provided at the inner end portion in the left-right direction of the leakproof wall portion 40. As a result, the rising start point of the leak-proof wall 40 (the end 73 es in the left-right direction of the intermediate joint 73) is positioned inward in the left-right direction, and the width of the absorbent main body 10 in the left-right direction is not too wide. It becomes easy to suppress that the absorptive main body 10 protrudes outside from the leg periphery opening 1b.
  • a leakproof wall elastic member 41 which is expanded and contracted in the longitudinal direction is provided between the intermediate joint portion 73 and the rear side joint portion 72.
  • the leakage preventing wall elastic member 41 is disposed on the skin side in the thickness direction of the end fixing parts 81 and 82 of the leakage preventing wall 40, and a region (edge part) near the end 40a of the leakage preventing wall 40 , The longitudinal contraction force is developed.
  • the leak-proof wall portion 40 can easily rise to the skin side.
  • the leak-barrier elastic member 41 by providing the leak-barrier elastic member 41, the rigidity of the end edge portion of the leak-barrier portion 40a can be increased, and the leak-barrier portion 40 can be prevented from being bent or fallen halfway.
  • the contraction force acting on the leakproof wall portion 40 by the leakproof wall elastic member 41 is larger than the contraction force acting on the crotchless member 23 by the crotch elastic member 28. That is, the spring constant per unit area in the portion where the leakage preventing wall elastic member 41 is provided in the leakage preventing wall portion 40 is the unit area per unit area in the portion where the crotch elastic member 28 is provided in the crotchless member 23. It is desirable to be larger than the spring constant.
  • the contraction force by the leakproof wall elastic member 41 contributes to bringing the leakproof wall portion 40 into close contact with the buttocks of the wearer, and the contraction force by the crotch elastic member 28 is around the wearer's leg It contributes to close contact of the outer edge portion of the crotch member 23. If the contraction force by the leakproof wall elastic member 41 is smaller than the contraction force by the crotch elastic member 28, the adhesion of the leakproof wall portion 40 is impaired, and the space between the leakproof wall portion 40 and the skin of the wearer is There is a risk of creating gaps and causing leakage of excrement and so on.
  • the contraction force by the leakproof wall elastic member 41 is made larger than the contraction force by the crotch elastic member 28.
  • the adhesion of the leak-proof wall 40 at the buttocks of the wearer is improved, and it becomes difficult to cause excretion leakage and the like.
  • the contraction force acting on the crotch member 23 by the crotch elastic member 28 be larger than the contraction force acting on the crotch member 23 by the crotch elastic region 23s. That is, the spring constant per unit area in the portion in which crotch elastic member 28 is provided in crotch member 23 is higher than the spring constant per unit area in the portion in which elastic nonwoven fabric 233 is provided in crotch member 23 It is desirable to be large. As described above, the contraction force by the crotch elastic member 28 contributes to bringing the outer edge portion of the crotch member 23 into close contact around the wearer's leg.
  • the crotch elastic region 23s contributes to bringing the crotch member 23 into close contact between the crotch of the wearer. Therefore, when the contraction force by the crotch elastic member 28 is weak, there is a possibility that a gap is likely to be generated between the crotch member 23 and the toe of the wearer (the leg opening 1b). Therefore, in the present embodiment, by making the contraction force by the crotch elastic member 28 be larger than the contraction force by the crotch elastic region 23s, the leg circumference opening 1b is brought into close contact with the crotch of the wearer. Can be made less likely to occur.
  • Pants-type disposable diaper (diaper, pants-type absorbent article), 1a waist opening, 1b leg opening, 10 Absorbent body, 10F front side, 10R rear side, 10es end, 11 Absorbent core, 11c neck, 11es end, 12 top sheets, 13 back sheets, 14 side sheets, 20 exterior members, 21 front belt portion (ventral side exterior member), 21s front elastic region, 211 waist area, 212 crotch area, 213 skin side sheet, 214 non-skin side sheet, 215 elastic nonwoven fabric, 22 back belt portion (back exterior member), 22s back stretchable area, 221 waist area, 222 crotch area, 223 skin sheet, 224 non-skin sheet, 225 elastic nonwoven fabric, 23 crotch member (crotch exterior member), 23s crotch stretch area, 231 skin sheet, 232 non-skin sheet, 233 elastic nonwoven fabric, 24 end junction area, 25a, 25b welds, 26 waist elastic members, 27 leg elastic members, 28 crotch

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
PCT/JP2018/044489 2017-12-28 2018-12-04 パンツ型吸収性物品 WO2019131007A1 (ja)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008245960A (ja) * 2007-03-30 2008-10-16 Livedo Corporation 吸収性物品の製造方法および吸収性物品
JP2008302138A (ja) * 2007-06-11 2008-12-18 Livedo Corporation 使い捨て吸収性物品
JP2010094334A (ja) * 2008-10-17 2010-04-30 Livedo Corporation 使い捨て吸収性物品
JP2011098052A (ja) * 2009-11-05 2011-05-19 Kao Corp パンツ型吸収性物品
JP2014180345A (ja) * 2013-03-18 2014-09-29 Livedo Corporation 吸収性物品
WO2017145394A1 (ja) * 2016-02-26 2017-08-31 ユニ・チャーム株式会社 使い捨ておむつ
WO2017213094A1 (ja) * 2016-06-06 2017-12-14 ユニ・チャーム株式会社 吸収性物品

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Publication number Priority date Publication date Assignee Title
JP5319263B2 (ja) * 2008-12-12 2013-10-16 花王株式会社 吸収性物品
JP2011125356A (ja) * 2009-12-15 2011-06-30 Kao Corp 生理用ナプキン
JP5749942B2 (ja) * 2011-03-08 2015-07-15 ユニ・チャーム株式会社 使い捨て着用物品
JP6037660B2 (ja) * 2012-05-28 2016-12-07 大王製紙株式会社 吸収性物品
JP5948516B1 (ja) * 2016-01-29 2016-07-06 ユニ・チャーム株式会社 吸収性物品

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008245960A (ja) * 2007-03-30 2008-10-16 Livedo Corporation 吸収性物品の製造方法および吸収性物品
JP2008302138A (ja) * 2007-06-11 2008-12-18 Livedo Corporation 使い捨て吸収性物品
JP2010094334A (ja) * 2008-10-17 2010-04-30 Livedo Corporation 使い捨て吸収性物品
JP2011098052A (ja) * 2009-11-05 2011-05-19 Kao Corp パンツ型吸収性物品
JP2014180345A (ja) * 2013-03-18 2014-09-29 Livedo Corporation 吸収性物品
WO2017145394A1 (ja) * 2016-02-26 2017-08-31 ユニ・チャーム株式会社 使い捨ておむつ
WO2017213094A1 (ja) * 2016-06-06 2017-12-14 ユニ・チャーム株式会社 吸収性物品

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