CN110740718A - Urine absorption pad - Google Patents

Urine absorption pad Download PDF

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Publication number
CN110740718A
CN110740718A CN201780091872.5A CN201780091872A CN110740718A CN 110740718 A CN110740718 A CN 110740718A CN 201780091872 A CN201780091872 A CN 201780091872A CN 110740718 A CN110740718 A CN 110740718A
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CN
China
Prior art keywords
region
longitudinal direction
width direction
absorbent
length
Prior art date
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Granted
Application number
CN201780091872.5A
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Chinese (zh)
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CN110740718B (en
Inventor
河村浩治
森和隆
木下晃吉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eunija Co Ltd
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Eunija Co Ltd
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Publication date
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Publication of CN110740718A publication Critical patent/CN110740718A/en
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Publication of CN110740718B publication Critical patent/CN110740718B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • 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
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • 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
    • A61F13/47—Sanitary towels, incontinence pads or napkins
    • A61F13/475—Sanitary towels, incontinence pads or napkins 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
    • A61F13/53—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 absorbing medium
    • 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
    • A61F13/53—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 absorbing medium
    • A61F13/531—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 absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—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 absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • 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
    • A61F13/53—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 absorbing medium
    • A61F13/531—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 absorbing medium having a homogeneous composition through the thickness of the pad
    • A61F13/532—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 absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
    • A61F13/533—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 absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having discontinuous areas of compression

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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)

Abstract

The urine absorption pad (1) comprises an absorption main body part (2) having an absorption body (21), a pair of leakage prevention wall parts (40, 40), wherein the absorption main body part (2) and the pair of leakage prevention wall parts () are provided, the absorption main body part has a base part (41) fixed on the absorption main body part, a 1 st wall part (42) connected with the base part and erected, and a 1 st wall part connected with the 1 st wall part and erected2 wall part (43), the 1 st joint portion (44) of joining basal portion and the 1 st wall part, join the 2 nd joint portion (45) of the 1 st wall part and the 2 nd wall part, a plurality of elastic component (EL). The 2 nd engaging part includes an engaging main body part (45)i) And a joint extension part (45) extending from the joint main body part along the length directionO). The 2 nd wall part has an expansion region (S) in which the elastic member extends in the longitudinal directionE) And non-stretching regions (S) on both outer sides of the stretching regionU). The joint extension portion is extended to a predetermined longitudinal direction length toward the inside in the longitudinal direction in the expansion/contraction region.

Description

Urine absorption pad
Technical Field
The present invention relates to a urine absorption pad.
Background
absorbent articles are known, which are provided with an absorbent main body having an absorbent body, and pairs of leakage preventing walls, in order to suppress side leakage, which is leakage of excreta liquid such as urine from widthwise ends of the absorbent article, the leakage preventing walls are formed so as to be positioned at both widthwise ends of the absorbent main body, extend continuously over both lengthwise ends, and rise toward the skin surface of the wearer, and as an absorbent article having such leakage preventing walls, an absorbent article disclosed in patent document 1 (jp 2010-a-094321) is cited, for example.
The absorbent article of patent document 1 has a substantially sheet-like main body portion in which an absorbent core is disposed between a back sheet and a top sheet, and pairs of side sheets provided on both side portions of the main body portion over substantially the entire length in the longitudinal direction of the main body portion, the pairs of side sheets each have a strip-like joining portion joined to the main body portion and being a portion on the side of a fold line provided over substantially the entire length in the longitudinal direction, and a side wall portion partially rising from the main body portion and being a portion on the other side of the fold line, the side wall portion being folded back toward the outside in the width direction at an inner edge in the width direction perpendicular to the longitudinal direction of the joining portion, which is the fold line, and further folded back toward the inside in the width direction, the side wall portion having 2 side wall end portions which are fixed to the joining portion at both ends in the longitudinal direction, a rising portion which is continuous with the 2 side wall end portions and which is rising from the joining portion, and an elastic member which is disposed over substantially the entire length in the rising portion in the longitudinal direction of the main body portion, and which is less shrinkable portions than the rising portion, the absorbent article being disposed from the half-rising portion, and the joining portion, the absorbent article having a lower extent of the absorbent core than the absorbent article, and the absorbent article, and.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2010-094321
Disclosure of Invention
In the absorbent article, as a method of making the leakage preventing walls more appropriately erected in order to suppress the leakage at steps, for example, there are kinds of urine absorbing pads which are not fixed to the outer cover, but are placed on the outer cover repeatedly used, and are worn in an unfixed manner, unlike sanitary napkins, belt-fixed diapers, pants-type diapers, and the like.
Here, the present inventors have studied a structure in which the leakage preventing walls are more appropriately erected without excessively contracting the elastic member by adopting methods which may possibly be considered disadvantageous for preventing side leakage at first glance and which narrow the range in which the elastic member can expand and contract in the leakage preventing walls.
However, if the range in which the elastic member can expand and contract in the leakage preventing wall is narrowed in this way, the width in the longitudinal direction of the region of the absorbent main body portion that supports the expansion and contraction of the elastic member in the vicinity of both ends of the elastic member is narrowed. The region of the absorbent main body that supports the elastic member in the expansion and contraction direction is a boundary portion of the absorbent main body that corresponds to the following boundary region: the boundary region is a boundary region between a range in which the elastic member can expand and contract and a range in which the elastic member does not exist or the elastic member does not expand and contract. As a result, a relatively large force is applied to the boundary portion of the absorbent main body, and deformation that bends from the upper side to the lower side in the thickness direction, that is, deformation that dents from the skin-facing surface side to the non-skin-facing surface side may occur in the boundary portion of the absorbent main body. Then, the deformation of the boundary portion of the absorption body portion may cause deformation in the boundary region of the leakage preventing wall, which may weaken the force with which the leakage preventing wall contacts the skin surface or may cause a gap between the leakage preventing wall and the skin surface. Further, since the boundary region of the leakage preventing wall is a region where the leakage preventing wall starts to rise, the degree of rising is small. As a result of these circumstances, even if the leakage preventing walls rise toward the skin surface of the wearer during wearing, a state may occur in which the leakage preventing walls are hard to adhere to the skin surface in the boundary region.
Accordingly, an object of the present invention is to provide kinds of urine absorption pads capable of narrowing a range in which an elastic member is stretchable in a longitudinal direction and suppressing side leakage at a boundary region between the range in which the elastic member is stretchable and the range in which the elastic member is not present or the elastic member is not stretchable.
The aspects (aspect 1) of the present invention are a urine absorbent pad kinds having a longitudinal direction, a width direction and a thickness direction, the urine absorbent pad including an absorbent main body having an absorbent body, the absorbent main body having an abdominal region, a crotch region and a back region in the longitudinal direction, pairs of leakage preventing walls, the pairs of leakage preventing walls being located at both ends of the absorbent main body in the width direction and extending continuously over both ends in the longitudinal direction, the pairs of leakage preventing walls each having a base portion facing the absorbent main body and having at least an outer end edge of the base portion in the width direction fixed to the absorbent main body, a 1 st wall portion connected to an inner end edge of the base portion in the width direction and rising toward a skin facing surface when worn, a 2 nd wall portion connected to an outer end edge of the 1 st wall portion in the width direction and rising toward the skin facing surface when worn, a 1 st joining portion connecting the base portion to the 1 st wall portion in the width direction and having a predetermined length, the elastic members extending from the second end edge portion in the longitudinal direction toward the inner end edge of the skin facing surface when worn, and the elastic joining region when the absorbent main body, the elastic members are arranged in the abdominal region, the elastic joining region, the elastic members are arranged in the longitudinal direction, the elastic members arranged from the second joining region and the elastic joining region, the elastic joining region 2 joining region, the second joining region, the elastic joining portion 2 joining portion arranged in the longitudinal direction, the longitudinal direction of the elastic joining region, the elastic joining region and the elastic joining region arranged in the longitudinal direction, the longitudinal direction of the extensible portions arranged from the abdominal region, the longitudinal direction, the elastic joining region, the longitudinal direction of the elastic joining region and the elastic joining region, the elastic joining region arranged in the longitudinal direction of the extensible portions arranged in the first joining region and the.
The absorbent pad of the present embodiment 1 has a structure in which a plurality of elastic members are arranged in a width direction so as to extend in a longitudinal direction in an expansion region of a second wall portion 2, and a joint extension portion of a second joint portion 2 fixes or semi-fixes a width-direction outer portion of the expansion region to a predetermined length direction, and therefore, in the expansion region, the width-direction outer portion is substantially shorter in length than the width-direction inner portion, and therefore, in the expansion region of the second wall portion, the width-direction outer portion is expanded in a relatively shorter range in the longitudinal direction, and the inner portion is expanded in a relatively longer range in the longitudinal direction, and therefore, the second wall portion is more appropriately erected in the thickness direction, and further, the joint extension portion of the second joint portion is provided to the expansion region so as to extend straight from the non-expansion region to the expansion region, and in the structure, the transition region of the second wall portion from the non-expansion region to the expansion region, i.e., the boundary region, the first wall portion is capable of being relatively erected from the non-expansion region to the skin-contact region, and the second wall portion 2 is capable of being relatively erected from the skin-contact region, and the first wall portion 2 is capable of being relatively more easily deformed, and thus, the skin-contact region, the skin-leakage-prevention region is capable of being able to be more easily caused by the skin-contact region, and thus, and the leakage-prevention region of the skin-leakage-prevention region, and the leakage-prevention region of the first wall portion 2, and the leakage-prevention region of the leakage-prevention region, and the leakage-prevention region of the first wall portion 2, and the skin-prevention region, and the leakage-prevention wall portion 2, and the leakage-prevention region of the skin-prevention wall portion 2, and the skin-prevention wall portion, and the leakage-.
Another mode (mode 2) of the present invention is the urine absorbent pad according to mode 1, wherein the absorbent body has a constricted portion in the crotch portion region when viewed in plan, the constricted portion being formed by narrowing both end edges of the absorbent body in the width direction inward in the width direction, and a position of the end portion of the constricted portion on the abdomen region side in the longitudinal direction is located in a region overlapping with a range of the joining extension portion in the longitudinal direction.
In the urine absorbent pad of embodiment 2, the end portion of the constricted portion having low rigidity in the absorbent body is disposed in a region overlapping with the longitudinal range of the joint extending portion in the longitudinal direction. That is, the end portion of the narrowed portion that is easily deformed in the thickness direction is provided at a position corresponding to the engagement extending portion. Here, the rigidity of the portion of the 2 nd wall portion that is joined by the joining extension portion becomes relatively high. Therefore, even if the end portion of the narrowing portion is deformed, the 2 nd wall portion can be suppressed from being deformed, and the gap can be suppressed from being generated between the skin surface and the surface on the skin-facing surface side of the 2 nd wall portion, and the surface on the skin-facing surface side of the 2 nd wall portion can be gently deformed along the curved surface of the skin surface.
A further mode (mode 3) of the present invention is the urine absorbent pad according to the above mode 1 or 2, wherein an end portion of the elastic member of the plurality of elastic members located on the 2 nd wall portion on the abdomen area side is located in a region overlapping with a range of the joining extension portion in the longitudinal direction.
In the urine absorption pad of embodiment 3, the position of the end portion on the abdominal region side of the elastic member located in the 2 nd wall portion in the longitudinal direction is located in the region overlapping the range in the longitudinal direction of the joining extension portion, and therefore, the degree of bending when the absorption body portion is bent from the upper side to the lower side in the thickness direction can be made relatively gentle as compared with the case where the end portion of the elastic member is located on the outer side in the longitudinal direction than the joining extension portion, and thereby, in the portion of the absorption body portion that can be bent in the thickness direction, it is possible to further suppress the occurrence of a gap between the surface on the skin opposing surface side of the leakage preventing wall (the 2 nd wall portion) and the skin surface due to the deformation of the 2 nd wall portion, and it is possible to more gently deform the surface on the skin opposing surface side of the 2 nd wall portion along the.
A further mode (mode 4) of the present invention is the urine absorbent pad according to any mode of the above modes 1 to 3, wherein the absorbent body has an opening that extends from the surface of the absorbent body toward the inside in the thickness direction and extends in the longitudinal direction, and at least portion of the opening is located in a region that overlaps with the longitudinal range of the joining extension portion in the longitudinal direction.
In the urine absorbent pad of embodiment 4, the absorbent body has the opening (in the case where the through hole is included), and at least part of the opening is located at a position in the longitudinal direction in a region overlapping with the longitudinal direction range of the joining extension portion, that is, at least part of the portion including the opening in the absorbent body, which has low rigidity and is easily deformed, is provided at a position corresponding to the joining extension portion.
A further mode (mode 5) of the present invention is the urine absorbent pad according to any of the modes 1 to , wherein the absorbent body includes pairs of embossed portions, the pairs of embossed portions are respectively disposed in a 1 st region in the width direction and a 2 nd region in the width direction, which are defined by a central axis in the width direction extending in the longitudinal direction, and are recessed in the thickness direction from the skin-facing surface, and a position in the longitudinal direction of an end portion on the abdomen region side in the longitudinal direction of the embossed portion is located in a region overlapping with a range in the longitudinal direction of the joint extension portion.
In the urine absorbent pad of embodiment 5, the absorbent body includes pairs of embossed portions, and the positions of the longitudinal ends of the embossed portions on the abdominal region side in the longitudinal direction are located in the region overlapping the longitudinal range of the joining extension portion, that is, the outer portions of the longitudinal ends of the embossed portions, which are less rigid and more deformable than the embossed portions, are located at the positions corresponding to the joining extension portions.
A further mode (mode 6) of the present invention is the urine absorbent pad according to any mode of the above modes 1 to 5, wherein an inner part in the width direction of the stretchable region is more likely to contract than an outer part in the width direction of the stretchable region.
In the urine absorbent pad of embodiment 6, the inner portion in the width direction of the stretchable region is more likely to contract than the outer portion in the width direction of the stretchable region. This makes it easy to raise the inner portion of the 2 nd wall portion in the width direction with respect to the outer portion in the width direction. Therefore, the 2 nd wall portion can be easily erected, and the erected structure can be easily maintained.
A further mode (mode 7) of the present invention is the urine absorbent pad of any mode among the modes 1 to 6, wherein the pair of leakage preventing wall portions each have a fixed end portion fixedly joined to the absorbent main body portion in the longitudinal direction and a free end portion located opposite to the fixed end portion in the width direction, and a longitudinal length of the elastic member on the fixed end portion side is longer than a longitudinal length of the elastic member on the free end portion side.
In the urine absorption pad of embodiment 7, the length of the plurality of elastic members in the longitudinal direction on the fixed end portion side is longer than the length of the elastic members in the longitudinal direction on the free end portion side. Therefore, the rising structure formed by the 1 st wall portion and the 2 nd wall portion is easily maintained at the outer portion in the width direction of the leakage preventing wall portion, and durability against the drain liquid toward the outer side in the width direction can be further ensured. Further, the inner portion of the leakage preventing wall portion in the width direction has a high degree of freedom in deformation and movement, and the leakage preventing wall portion can be easily attached to the wearer's body shape (the shape of the crotch portion). Thus, the urine absorbent pad can satisfactorily exhibit the leakage preventing function of the leakage preventing wall portion.
A further mode (mode 8) of the present invention is the urine absorbent pad of any mode among the modes 1 to 7, wherein the pairs of leakage preventing wall portions further include a 3 rd joined portion that joins the base portion to the 1 st wall portion in the back portion region and has a predetermined length in the width direction, the 3 rd joined portion extending inward from an end edge of the leakage preventing wall portion in the length direction and opposing the 1 st joined portion in the length direction, and a 4 th joined portion that joins the 1 st wall portion to the 2 nd wall portion in the back portion region and has a predetermined length in the width direction, the 4 th joined portion extending inward from an end edge of the leakage preventing wall portion in the length direction and opposing the 2 nd joined portion in the length direction, the 4 th joined portion includes a back joined main portion located on the side of the end edge of the leakage preventing wall portion in the length direction, and a back joined extended main portion extending inward in the length direction from an outer side of the main portion in the width direction of the back joined portion in the length direction, the back joined portion is provided on the inner side of the elastic joined portion in the back joined portion extending inward in the length direction, and the back joined portion extends inward in the predetermined length direction or the back joined portion in the predetermined length direction when viewed from the back portion.
The urine absorbent pad of embodiment 8, by having the above-described structure, can expand and contract the outer portion in the width direction within a short range along the longitudinal direction and expand and contract the inner portion within a long range along the longitudinal direction in the expansion and contraction region of the 2 nd wall portion on the back region side, whereby the 2 nd wall portion can be more appropriately raised in the thickness direction, and can relatively increase the rigidity of the boundary region on the back region side, whereby even if deformation occurs in the boundary portion of the absorption body portion corresponding to the boundary region, the absorption body portion being bent from the upper side to the lower side, deformation of the boundary region of the 2 nd wall portion can be suppressed, and therefore, the force with which the skin-facing surface of the leakage prevention wall portion comes into contact with the skin surface becomes weak, or a gap is generated between the skin-facing surface side surface of the 2 nd wall portion of the leakage prevention wall portion and the skin surface, and therefore, leakage of the drainage liquid at the boundary region can be suppressed, moreover, in the back region, structurally, in the boundary region, even if the 2 nd wall portion with increased rigidity is deformed so that the gap comes into contact with the skin surface and the gap between the skin surface becomes weak, it can be more easily caused to leak through the skin-facing surface, and it can be more easily prevented, and the leakage of the leakage prevention of the leakage prevention wall portion, and the leakage prevention of the leakage prevention wall portion, and the leakage prevention of the leakage prevention of the leakage prevention wall portion, and of the leakage prevention of the.
A further mode (mode 9) of the present invention is the urine absorbent pad according to the above mode 8, wherein a longitudinal length of the stretchable region is smaller than a total length of a longitudinal length of the 2 nd bond part in the abdomen region and a longitudinal length of the 4 th bond part in the back region.
In the urine absorbent pad of embodiment 9, the longitudinal length of the stretchable region is smaller than the total length of the longitudinal length of the 2 nd joining part and the longitudinal length of the 4 th joining part. Therefore, the urine absorption pad can be prevented from being excessively contracted when worn. Further, when the wearer sleeps on his side, the region other than the expansion/contraction region of the 2 nd wall portion supports the expansion/contraction region of the 2 nd wall portion, and the expansion/contraction region maintains its upright shape, so that it is possible to make it difficult for the excretory fluid to pass over the 2 nd wall portion.
A further mode (mode 10) of the present invention is the urine absorbent pad of any mode among the modes 1 to 8, wherein the urine absorbent pad is folded along a folding line extending in the width direction at a plurality of folding positions in the longitudinal direction when packaged, and a folding position on the side closest to the abdomen area among the plurality of folding positions is located inward of an inner end edge in the longitudinal direction of the joint extension portion of the 2 nd joint part.
In the present urine absorbent pad, the folded position on the side closest to the abdominal region is located inward of the inner end edge in the longitudinal direction of the joining extension of the 2 nd joining part. That is, the folded position does not overlap with the 1 st joint and the 2 nd joint. Therefore, when the folded urine absorption pad is opened, the 1 st wall portion and the 2 nd wall portion do not have a fold line which is likely to cause side leakage, and the side leakage prevention function by the 2 nd joining portion (joining extension portion) can be effectively exhibited.
Effects of the invention
According to the present invention, a urine absorption pad can be provided as follows: the elastic member can be made narrower in the range in which it can expand and contract in the longitudinal direction, and side leakage at the boundary region between the range in which it can expand and contract and the range in which it does not exist or does not expand and contract can be suppressed.
Drawings
Fig. 1 is a plan view of an embodiment urine absorption pad 1 in a developed state.
Fig. 2 is an end view of the urine absorption pad 1 in a natural state taken along the line II-II in fig. 1.
Fig. 3 is an end view of the urine absorption pad 1 in a natural state taken along the line III-III in fig. 1.
Fig. 4 is an end view of the urine absorption pad 1 in a natural state taken along the line IV-IV of fig. 1.
Fig. 5 is an end view of the urine absorption pad 1 in a natural state taken along the line V-V in fig. 1.
Fig. 6 is an end view of the urine absorption pad 1 in a natural state taken along the line VI-VI in fig. 1.
Fig. 7 is a perspective view of the urine absorption pad 1.
Detailed Description
In the present specification, unless otherwise specified, "when an object placed on a horizontal surface in an unfolded state (for example, an absorbent article, an absorbent body, an absorber, and the like, the same applies hereinafter)" is viewed from the upper side in the vertical direction (the topsheet side in the case where the object is an absorbent article or an absorbent body) in the thickness direction of the object, "in plan view," in the unfolded state "refers to a state in which the object placed on the horizontal surface is elongated so as to be along the horizontal surface, and a state in which the elongation is released from the elongated state (for example, a state in which the object is contracted to a certain extent by an elastic member or the like) is referred to as a" natural state ".
The various directions and the like used in the present specification are as follows without specific description.
The "longitudinal direction" refers to a "direction in which the length of a vertically long object is long in a plan view," the "width direction" refers to a "direction in which the length of the vertically long object is short in a plan view (short-side direction)," and the "thickness direction" refers to a "direction perpendicular to an object placed on a horizontal plane in an expanded state. The longitudinal direction, the width direction and the thickness direction are orthogonal to each other. The longitudinal direction, the width direction, and the thickness direction of the absorbent article correspond to the longitudinal direction, the width direction, and the thickness direction of the absorbent main body and the absorbent body constituting the absorbent article, respectively.
The "virtual line located at the center in the longitudinal direction of the object and extending in the width direction" is referred to as "longitudinal central axis CW". Will be away from the central axis C in the length directionWThe relatively close side is called the "longitudinal inner side", and is separated from the longitudinal central axis CWThe relatively distant side is referred to as the "outer side in the longitudinal direction", and similarly, the "imaginary line located at the center in the width direction of the object and extending in the longitudinal direction" is referred to as the "central axis C in the width directionL". Will be away from the width direction central axis CLThe relatively close side is called "inner side in width direction", and will be "away from the center axis C in width directionLThe relatively distant side is referred to as "the outer side in the width direction".
Further, "a region corresponding to the abdomen of the wearer when the absorbent article is worn in the longitudinal direction of the absorbent article, the absorbent body, or the absorber" is referred to as "an abdominal region". The "region corresponding to the wearer's back to buttocks in the longitudinal direction of the absorbent article, the absorbent body or the absorber" is referred to as a "back region". The "region corresponding to the crotch of the wearer when the absorbent article is worn" as a region located between the abdominal region and the back region in the longitudinal direction of the absorbent article or the absorbent main body portion is referred to as a "crotch region". Here, the term "wearing time" refers to a period (wearing period) from the time when the absorbent article is worn by the wearer (i.e., the time when the usable state is established) until the absorbent article is maintained in the usable state.
In addition, in the thickness direction of the absorbent article, the absorbent body or the absorber, " side relatively close to the skin surface of the wearer when wearing the absorbent article" is referred to as "skin-facing surface side," and " side relatively far from the skin surface of the wearer when wearing the absorbent article" is referred to as "non-skin-facing surface side.
Fig. 1 is a plan view of an absorbent pad 1 according to an embodiment of the present invention in a developed state, fig. 2 to 6 are end views of the absorbent pad 1 in a natural state taken along the line II-II to VI-VI in fig. 1, respectively, and fig. 7 is a perspective view of the absorbent pad 1.
As shown in fig. 1, the absorbent pad 1 according to the embodiments of the present invention has a vertically long outer shape having a longitudinal direction L and a width direction W in a plan view, and specifically, has a substantially central portion in the longitudinal direction L (i.e., an crotch region a)CCorresponding portion) is narrowed toward the inside in the width direction W, and has a substantially hourglass outer shape. In the present invention, the outer shape of the absorbent article is not limited to this form, and any longitudinal shape (for example, a rectangle, an ellipse, an oval, a gourd-shaped shape, etc.) according to various applications can be adopted as long as the longitudinal dimension in the longitudinal direction L is larger than the width dimension in the width direction W. In addition, the respective directions of the longitudinal direction L, the width direction W, and the thickness direction T of the urine absorption pad 1 are also used similarly for the respective members constituting the urine absorption pad 1.
As shown in FIG. 1, the urine absorbent pad 1 of the present embodiment is composed of the absorbent main body 2 and and the side sheets 4 and 4 (leakage preventing wall parts), and the absorbent main body 2 has an abdominal region A in the longitudinal direction LFCrotch region ACAnd a back region ABThe absorbent body 21, has the pair of side sheets 4, 4 respectively positioned at both ends in the width direction W of the absorbent body 2 and at both ends in the longitudinal direction LThe portions extend continuously. In this case, the crotch region ACIs set as an abdominal region A at both edges in the longitudinal direction L of the abdominal regionFAnd a back region ABThe absorbent body 2 starts to narrow in the width direction W. Abdominal region AFCrotch region ACAnd a back region ABThe ratio of the length in the longitudinal direction of (A) may be varied in various ways depending on the age and/or sex of the wearer, and examples thereof include 25 to 35: 30 to 40: 35 to 45.
As shown in fig. 1 to 6, the absorbent body 2 includes in the thickness direction T: a liquid-permeable front sheet 22 positioned on the skin-facing surface side; a liquid-impermeable back sheet 23 positioned on the non-skin-facing surface side; and an absorber 21 which is positioned between the front sheet 22 and the back sheet 23 and can absorb and hold excretory fluid such as urine. In the present embodiment, the absorber 21 includes: a 1 st absorption layer 21A on the skin-facing side; and a 2 nd absorption layer 21B on the non-skin-facing side. The absorbent body 2 is configured to: excretory fluid such as urine excreted by the wearer is allowed to penetrate in the thickness direction T, and is absorbed and held by the absorber 21.
As shown in fig. 1 to 6, pair of side sheets 4, 4 (leakage preventing wall portions) are disposed so as to face the absorbent body 2 on the skin-facing surface side of (the front sheet 22 of) the absorbent body 2, so as to be positioned at both ends in the width direction W of the absorbent body 2 and extend continuously over both ends in the longitudinal direction L (i.e., the abdominal region side end and the back region side end in the longitudinal direction L), pair of side sheets 4, 4 each have a free end portion positioned inside the width direction W of the absorbent body 2 and not joined to the surface on the skin-facing surface side of the absorbent body 2, and a fixed end portion positioned outside the width direction W of the absorbent body 2 and joined to the surface on the skin-facing surface side of the absorbent body 2, and such a pair of side sheets 4, 4 that the free end portion, that is, stands up toward the skin-facing surface side (i.e., the inner end edge in the width direction W) when the urine absorption pad 1 is worn, pair of leakage preventing wall portions 40, functions as a leakage preventing wall portion 40, which prevents the wearer from leaking urine.
As shown in FIG. 1, pairs of side sheets 4, 4 are each provided with a plurality of elastic members EL in the longitudinal direction L in the vicinity of the inner end edge in the width direction W, and pairs of side sheets 4, 4 and even the urine absorbent pad 1 are contracted in the longitudinal direction L, thereby facilitating the rising of pairs of inner end edges in the width direction W of the side sheets 4, 4. in the present embodiment, the plurality of elastic members EL are arranged so as to extend in the longitudinal direction L in pairs of leakage preventing wall portions 40, respectively, and are arranged between the free end portions and the fixed end portions in the width direction W, and the plurality of elastic members EL are arranged in the longitudinal direction substantially in the central portions of pairs of leakage preventing wall portions 40, specifically, substantially from the abdominal region AFIncludes an crotch region A from the inner endCIn the inner to back region ABThe elastic member EL is a portion having an elastic force among the elastic members, and a portion having no elastic force is not included in the elastic member EL, but is continuous with the portion having an elastic force, and the portion having no elastic force is, for example, a portion which is fixed to the sheet by an adhesive or the like and is in a state of being unable to expand and contract, in the present embodiment, 2 elastic members EL1 and EL1 are disposed on the inner side in the width direction W of pairs of leakage preventing wall portions 40 and 40, respectively, 1 elastic member EL3 is disposed on the outer side in the width direction W of pairs of leakage preventing wall portions 40 and 40, respectively, and two elastic members EL2 and EL2 are disposed between the outer side and the inner side, respectively.
As shown in fig. 2 to 6, in the urine absorbent pad 1 of the present embodiment, pairs of leakage preventing wall portions 40, 40 formed by pairs of side sheets 4, 4 have a base portion 41, a 1 st wall portion 42 and a 2 nd wall portion 43, respectively, the base portion 41 faces the absorbent main body portion 2, and at least the outer end edge in the width direction W is fixed to the absorbent main body portion 2, the 1 st wall portion 42 is connected to the inner end edge in the width direction W of the base portion 41 on the skin facing surface side of the base portion 41, and rises toward the skin facing surface side in wearing (specifically, the inner portion in the length direction L rises toward the skin facing surface side), the 2 nd wall portion 43 is connected to the outer end edge in the width direction W of the 1 st wall portion 42 on the skin facing surface side of the 1 st wall portion 42, and rises toward the skin facing surface side in wearing (specifically, the inner portion in the length.
As shown in FIGS. 1 and 5, correspond to the leakage preventing wall parts 40, 40 at least in the abdominal region AF(preferably also in the back region A)B) Including the 1 st engagement portion 44 and the 2 nd engagement portion 45. In the present embodiment, the 1 st joining portion 44 joins the base portion 41 and the 1 st wall portion 42 (specifically, joins outer portions of the base portion 41 and the 1 st wall portion 42 in the longitudinal direction L) and has a predetermined width direction length, and is provided so as to extend inward from an end edge of the leakage preventing wall portion 40 in the longitudinal direction L. The 2 nd joining portion 45 joins the 1 st wall portion 42 and the 2 nd wall portion 43 (specifically, joins outer portions of the 1 st wall portion 42 and the 2 nd wall portion 43 in the longitudinal direction L) and has a predetermined width direction length, and is provided to extend inward from an end edge of the leakage preventing wall portion 40 in the longitudinal direction L. In the present embodiment, the outer end edges in the longitudinal direction L of each of the 1 st joining portion 44 and the 2 nd joining portion 45, i.e., the end edges in the longitudinal direction L of the leakage preventing wall portions 40 are the end edges in the longitudinal direction L of the side sheets 4.
The 2 nd engaging part 45 includes an engaging main body part 45iAnd engaging extension 45O. Joint body 45iIs a portion closer to the end edge of the leakage preventing wall 40 in the longitudinal direction L. Engaging extension 45OIs abutted against the engaging body portion 45iIs connected to the main body 45 from the outer side in the width direction WiIs extended to an crotch region A inside in the longitudinal direction L by a predetermined longitudinal length from an inner end edge in the longitudinal direction LCAt a halfway position of (3). Engaging extension 45OAnd the joint main body portion 45 (i.e., the widthwise length of the 2 nd joint portion 45 inward in the longitudinal direction L)iThe ratio of the width-direction length of (2 nd joint part 45) (i.e., the width-direction length outside the length direction L) is, for example, 30% to 70%. By setting in this range, the joint extension 45 can be sufficiently exhibitedOThe rigidity of the 2 nd wall portion 43 is improved. Further, the width-directional length of the 2 nd joint part 45 (i.e., the joint main body part 45)iThe width direction length of) and the width direction length of the 2 nd wall part 43, for example, 30% to 80%.By setting in this range, the function of the 2 nd joint part 45 can be sufficiently exhibited. In this case, the extension 45 is engagedO Inner end edge 45E in the longitudinal direction L ofOTo the main body portion 45i Inner end edge 45E in the longitudinal direction L ofiOn the inner side in the longitudinal direction L.
In a plan view, ends of the plurality of elastic members EL in the longitudinal direction L are located in the abdomen area a in the longitudinal direction LFJoint main body portion 45 ofi Inner end edge 45E ofiPosition or edge 45E ofiAnd the other end of the length direction L is located in the back area aBAt a predetermined position therein.
The 2 nd wall portion 43 has: stretchable region S extending in the longitudinal direction L and capable of stretchingE(ii) a And in the telescopic region SEOn both outer sides in the longitudinal direction L of the non-stretchable region SU. Expansion region SEAnd a non-stretching region SUThe 2 nd engaging portions 45 and the elastic members EL1, EL2 located at the 2 nd wall portion 43 among the plurality of elastic members EL are formed in the length direction L. I.e. the expansion region SEIs a region which can be expanded and contracted in the longitudinal direction by disposing an elastic member EL in the longitudinal direction L, and is a non-expansion region SUThe elastic member EL is not disposed in the longitudinal direction L and/or the elastic member EL is not fixed by a joint portion such as an adhesive and is not stretchable although the elastic member EL is disposed in the longitudinal direction L. The non-stretchable region is: the region having a lower degree of expansion and contraction for the same load is preferably an area that expands and contracts by only 5% or less of the original length, as compared with the region capable of expansion and contraction.
In the 2 nd wall part 43 and even the leakage preventing wall part 40, the non-expansion region SUTransition to telescopic region SEThe region (B) is a boundary region where the degree of expansion and contraction changes rapidly, and therefore can be called a boundary region BA. Here, the boundary region BAIs a non-expansion area SUAnd a telescopic region SEThe boundary of (A) is a reference for expanding the expansion region S to the inner side and the outer side of the longitudinal direction LEA predetermined ratio of the longitudinal length of (a).In the present embodiment, the boundary region BARefers to the expansion region SEIn the range of 5% to 20% of the length in the longitudinal direction. In other words, the boundary region BAIs from the non-telescopic region SUAnd a telescopic region SETo the non-stretching region SULaterally extended by 5-20% and extended toward the expansion region SEThe side extension is in the range of 5% to 20% of the length. The boundary region B of the absorbent main body 2AThe corresponding portions, i.e., the boundary portions, are portions that support the expansion and contraction of the elastic member EL in the vicinity of both end portions of the elastic member EL. Therefore, the elastic member EL expands and contracts, i.e., the expansion and contraction region SEA large force is applied to the boundary portion of the absorbent body 2.
In the present embodiment, the engaging extension 45OExtending from the outer part of the 2 nd joint part 45 in the width direction W toward the inner side in the longitudinal direction L, i.e., from the non-stretchable region SU(the joint main body part 45i) is extended and arranged to the telescopic area SE. In other words, the engaging extension 45OTo cross the boundary region BAIs arranged in an extended manner. In the present embodiment, the engaging extension 45OIn the telescopic region SEThe outer side in the width direction W in the middle is extended toward the inner side in the longitudinal direction L to form a predetermined longitudinal length. Wherein the predetermined longitudinal length is from the joint main body portion 45i Inner end edge 45E ofiTo the telescopic region SEInner boundary region BAThe length in the longitudinal direction of (2) preferably exceeds the expansion/contraction region S inwardEInner boundary region BAThe length of the end edge of (a). In the present embodiment, the expansion/contraction region S in the longitudinal length is definedEThe inner length being a telescopic region SEThe length of (b) is in the range of 5% to 20%, preferably in the range of 10% to 15%. If the predetermined longitudinal length is within this range, the joint extension 45 can be sufficiently exhibitedOThe rigidity of the 2 nd wall portion 43 is improved. In the present embodiment, the elastic member EL2 of the 2 nd wall portion 43 among the plurality of elastic members EL and the joining extension portion 45 extending in the longitudinal direction LOAnd (4) overlapping. However, the engagement extension 45OThe elastic member EL does not need to be completely fixed and is in a state of being completely inextensible, and may be, for example, a half-fixed state in which a certain degree of expansion and contraction of is possibleEIn the above description, the length direction of the inner portion in the width direction W is longer than the length direction of the outer portion in the width direction W.
As shown in fig. 1, the absorber 21 is disposed in the absorbent body 2 in a plan view. Specifically, the abdomen area side end edge 21E in the longitudinal direction L of the absorber 212(preferably, the back region side edge 21E1Also) the joint main body portion 45 of the 2 nd joint portion 45i Inner end edge 45E positioned innermost in the longitudinal direction LiFurther, both end edges in the width direction W of the absorbent body 21 (i.e., the -side end edges 21E in the width direction W)3And another side edges 21E4) In the abdominal region AF(preferably also in the back region A)B) The inner end edge of the base portion 41 in the width direction W is located outward in the width direction W.
Next, the operation of the urine absorption pad 1 will be described with reference to fig. 1 to 7. Fig. 7 is a perspective view of the urine absorption pad 1. In the urine absorption pad 1, the expansion region S of the 2 nd wall part 43 is formedEIn the second embodiment, a plurality of elastic members EL1, EL2 are arranged so as to extend in the longitudinal direction L and be aligned in the width direction W, and the joining extension 45 of the 2 nd wall portion 43OWill expand and contract the area SEThe outer portion in the width direction W of (b) is fixed or semi-fixed to a predetermined longitudinal length. Therefore, in the expansion region SEIn the third aspect, the length in the longitudinal direction of the outer portion in the width direction W is substantially shorter than the length in the longitudinal direction of the inner portion in the width direction W. With such a structure, the expansion region S of the 2 nd wall part 43 is formedEIn the above configuration, the outer portion in the width direction W can be expanded and contracted in a short range in the longitudinal direction L, and the inner portion can be expanded and contracted in a long range in the longitudinal direction L. This makes it easier to raise the 2 nd wall portion 43 in the thickness direction T.
Further, the engaging extension 45 of the 2 nd engaging part 45OFrom the abdominal regionDomain AFLateral non-stretching region SUThe crotch region A is provided with a riser extending straightCLateral expansion zone SE. With such a structure, the engaging extension 45 in the 2 nd wall portion 43OIn a region, i.e. from the non-stretching region SUTransition to telescopic region SEI.e. boundary region BAIn (3), the rigidity can be relatively improved. Thus, as shown in fig. 7, the absorbent body 2 is located in the boundary region BAThe deformation of the corresponding boundary portion to absorb the bending of the main body 2 from the upper side to the lower side in the thickness direction T can be suppressed, and the boundary region B of the 2 nd wall portion 43 can be suppressedADeformation of (2). Therefore, it is possible to suppress the force with which the skin-facing surface of the leakage preventing wall 40 contacts the skin surface from becoming weak or a gap from being generated between the skin-facing surface side surface of the 2 nd wall 43 of the leakage preventing wall 40 and the skin surface, and therefore it is possible to suppress the excretory fluid P from being present in the boundary region BASide leakage occurs.
Further, the engaging extension 45 of the 2 nd engaging part 45０From the abdominal region AFLateral non-stretching region SUThe crotch region A is provided with a riser extending straightCLateral expansion zone SEAnd the 2 nd wall portion 43 is joined to the 1 st wall portion 42. With such a structure, as shown in FIG. 3, the boundary region B at the 2 nd wall part 43AIn the above configuration, the surface of the 2 nd wall portion 43 on the skin-facing surface side can be maintained in a planar shape substantially parallel to the surface of the absorbent main body portion 2 on the skin-facing surface side. Therefore, the probability of contact between the surface of the 2 nd wall portion 43 on the skin-facing surface side and the skin surface can be increased. Thereby, the boundary region B with a small rising degree is structurally arrangedAIn this case, even if the force with which the leakage preventing wall portion 40 comes into contact with the skin surface is weakened or a gap is locally generated between the skin surface and the 2 nd wall portion 43 having increased rigidity is deformed, the surface of the 2 nd wall portion 43 on the skin-facing surface side comes into substantial surface-to-surface contact with the skin surface, and therefore, as shown in fig. 7, the movement of the excretory fluid P can be prevented at any portion of the surface while the excretory fluid P is crossing the surface. Thus, the discharged liquid can be suppressed from flowing into the boundary region BASide leakage occurs.
In this manner, in the leakage preventing wall portion 40, it is easy to more appropriately raise the 2 nd wall portion 43 to suppress side leakage, and it is easy to make the 2 nd wall portion 43 follow the skin surface by suppressing the generation of a gap in the 2 nd wall portion 43, and it is possible to further suppress side leakage by increasing the contact probability by making the 2 nd wall portion 43 contact the skin surface in a planar manner .
In the urine absorption pad 1 of the present embodiment, pairs of leakage preventing wall portions 40, 40 are preferably provided in the back region aBHas a region A in contact with the abdomenFThe same structure as that of the 1 st joint 44 and the 2 nd joint 45 in (1), that is, pairs of leakage preventing wall portions 40, 40 are also present in the abdominal region AFComprising: a 3 rd engaging part (hereinafter referred to as "the 3 rd engaging part 44") similar to the 1 st engaging part 44; and a 4 th joint portion (hereinafter referred to as "4 th joint portion 45") similar to the 2 nd joint portion 45. In the back area ABThe 3 rd joining part 44 joins the base part 41 and the 1 st wall part 42, has a predetermined width direction length, extends inward from the end edge of the leakage preventing wall part 40 in the longitudinal direction L, and joins the abdomen area aFThe 1 st joint part of (2) is opposed in the longitudinal direction L. In the back area ABThe 4 th joint portion 45 joins the 1 st wall portion 42 and the 2 nd wall portion 43, has a predetermined width-direction length, extends inward from the end edge of the leakage preventing wall portion 40 in the longitudinal direction L, and joins the abdominal region aFThe 2 nd engaging portion 45 of (b) is opposed in the longitudinal direction L. The 4 th engaging part 45 includes: a back-joining main body 45 located on the end edge side of the leakage preventing wall 40 in the longitudinal direction Li(ii) a And engaging the body portion 45 from the backiThe outer part in the width direction W of the back joint extension part 45 extending to the inner side in the length direction LO. The plurality of elastic members EL are arranged from the back area A in the longitudinal direction L in a plan viewBMiddle back engaging body portion 45iInner end edge 45E ofiOr its inner side toward the abdominal region AFAnd (4) extending. Also, the back engagement extension 45OIn the back area ABLateral expansion zone SEThe outer side in the width direction W of the base member extends toward the inner side in the longitudinal direction L to form a predetermined longitudinal length.
By having the above-described structure, the present urine absorbent pad 1 is not only in the abdominal region AFLaterally and in the back area ABThe sides are also as follows: in the expansion region S of the 2 nd wall part 43EIn the above configuration, the outer portion in the width direction W can be expanded and contracted in a short range in the longitudinal direction L, and the inner portion can be expanded and contracted in a long range in the longitudinal direction L. This makes it easy to raise the 2 nd wall portion 43 more appropriately in the thickness direction T. And, in the back area ABSide, the boundary region B can be relatively raisedAThereby, even in the boundary region B with the absorbent main body 2AThe deformation of the absorbing body 2 from the upper side to the lower side in the thickness direction T occurs at the corresponding boundary portion, and the boundary region B of the 2 nd wall part 43 can be suppressedADeformation of (2). This can prevent the skin-facing surface of the leakage preventing wall 40 from being weakened in force to contact the skin surface or a gap from being formed between the skin-facing surface side surface of the 2 nd wall 43 of the leakage preventing wall 40 and the skin surface, and thus can prevent the excreted liquid from flowing into the boundary region BASide leakage is generated. In addition, in the back region ABIn the structure, a smaller boundary region B is erectedAEven if the force with which the leakage preventing wall portion 40 comes into contact with the skin surface is weakened or a gap is locally generated between the leakage preventing wall portion 40 and the skin surface due to the deformation of the 2 nd wall portion 43 having increased rigidity, the surface of the 2 nd wall portion 43 on the skin-facing surface side comes into substantial surface-to-surface contact with the skin surface, and therefore, movement of the excretory fluid can be prevented at any portion of the surface while the excretory fluid is going to traverse the surface. Thus, the discharged liquid can be suppressed from flowing into the boundary region BASide leakage occurs. In this manner, the leakage preventing wall 40 is not only in the abdominal region aFThe side is also in the back area ABFurther, it is possible to suppress the side leakage by easily raising the 2 nd wall portion 43 more appropriately, and to suppress the generation of a gap in the 2 nd wall portion 43 to easily bring the 2 nd wall portion 43 along the skin surface, and to increase the contact probability by bringing the 2 nd wall portion 43 into surface contact with the skin surface, thereby further suppressing the side leakage .
Hereinafter, various members constituting the absorbent article of the present invention will be described in more detail with reference to the urine absorption pad 1 of the above embodiment.
< absorbent body section >
In the absorbent pad 1 according to the embodiments of the present invention, as shown in fig. 1, the absorbent main body 2 has a vertically long outer shape (i.e., the crotch region a in the longitudinal direction L) which is the shape of the absorbent pad 1 as viewed in planCA substantially hourglass shape in which the corresponding portion narrows toward the inside in the width direction W). In the present invention, the external shape of the absorption body is not limited to the embodiment described in the present embodiment, and any longitudinal shape (for example, a rectangle, an ellipse, a gourd-shaped shape, etc.) according to various applications can be adopted as long as the longitudinal dimension in the longitudinal direction is larger than the width dimension in the width direction. In the present invention, the dimensions of the absorbent main body such as the longitudinal length, the width length, and the thickness length (thickness) are not particularly limited as long as the absorbent main body has predetermined absorbency, flexibility, and suitability for the body shape of the wearer, and any dimensions can be adopted depending on the size, sex, absorbent article, use, and the like of the wearer.
As shown in fig. 1 to 6, the absorbent main body 2 includes, as main components in the thickness direction T: a liquid-permeable front sheet 22 positioned on the skin-facing surface side; a liquid-impermeable back sheet 23 positioned on the non-skin-facing surface side; and an absorber 21 which is positioned between the front sheet 22 and the back sheet 23 and includes 2-layer absorbent layers (a 1 st absorbent layer 21A and a 2 nd absorbent layer 21B) capable of absorbing and retaining excreta liquid such as urine. In the present embodiment, the absorbent body 2 further has a liquid-impermeable back film 24 on the skin-facing surface side of the back sheet 23 (between the absorbent body 21 and the back sheet 23).
Hereinafter, various structural members that can be used in the absorbent body section 2 of the urine absorption pad 1 according to the present invention will be described in more detail with reference to the above-described embodiments.
[ front sheet ]
In the above embodiment, as shown in fig. 1 to 6, the topsheet 22 disposed on the skin-facing surface side of the absorbent body 2 is positioned on the abdomen side in the longitudinal direction L of the absorbent body 2 in plan view extends from the side end of the region to the side end of the back region, and is located at the side end edge 21E in the width direction W of the absorbent body 21 in the absorbent body 23The vicinity extends to the other side end edge 21E4The vicinity of the outer edge has a substantially rectangular outer shape elongated in the longitudinal direction L as a whole. The size and shape of the topsheet are not particularly limited as long as they cover a large part of the surface of the absorbent body on the skin-facing surface side (for example, a part exceeding 50% of the surface area of the absorbent body on the skin-facing surface side), and any size and shape can be adopted according to various applications and the like. In the above embodiment, as shown in fig. 1 to 6, the topsheet 22 is disposed on the skin-facing surface side which can be brought into direct contact with the skin surface of the wearer in the thickness direction T of the absorbent body 2, and is composed of a liquid-permeable sheet which can rapidly transfer excretory fluid such as urine excreted by the wearer to the absorbent body 21, and the absorbent body 21 is disposed on the non-skin-facing surface side of the topsheet 22.
In the present invention, the liquid-permeable sheet usable as the topsheet is not particularly limited as long as it has various characteristics (for example, liquid permeability, skin touch, flexibility, strength, etc.) usable as the topsheet of the absorbent article, and for example, a fibrous sheet such as a nonwoven fabric or a woven fabric such as a hot-air nonwoven fabric, a spunbonded nonwoven fabric, a point-bonded nonwoven fabric, etc., an apertured film formed by applying a plurality of apertures to a resin film, etc. may be preferably used, and further, a hydrophilic treatment may be applied to the fibrous sheet by a surfactant, and in the case of using the fibrous sheet as the topsheet, it is preferable to use a fibrous sheet, and more preferably, a nonwoven fabric such as a hot-air nonwoven fabric or a spunbonded nonwoven fabric, etc., from the viewpoint of excellent liquid permeability, flexibility, strength, etc., and, for example, it is possible to use a resin fiber composed of an olefin resin (polyethylene, polypropylene, etc.), a thermoplastic resin (a polyester resin such as polyethylene terephthalate, polylactic acid, etc.), and for example, it is possible to use resins alone, or two or more than one kind of resin fibers, and, such as a surface-treated, a surface-treated with a surfactant, and, or a composite fiber, and further, a surface-treated with a surfactant, such as a surfactant, and further, a surfactant, and further, and a surfactant, and so on the like, and so forth.
In the present invention, the liquid-permeable sheet usable as the top sheet is not particularly limited as long as it has predetermined liquid permeability, flexibility and strength, and the weight per unit area is, for example, 5g/m2～100g/m2In the range of (1), preferably 10g/m2～50g/m2Within the range of (1). The thickness of the liquid-permeable sheet is not particularly limited as long as the liquid-permeable sheet can function as a topsheet of an absorbent article, and any thickness can be used depending on the desired liquid permeability, flexibility, strength, and the like. The structure of the liquid-permeable sheet that can be used as the topsheet is not particularly limited as long as it has predetermined liquid permeability, flexibility, and strength, and for example, a liquid-permeable sheet having a substantially flat structure or a surface having an uneven structure on the skin-facing surface side can be preferably used.
[ Back sheet ]
In the above embodiment, as shown in fig. 1 to 6, the back sheet 23 disposed on the non-skin-facing surface side of the absorbent main body 2 extends from the abdomen-side end in the longitudinal direction L of the absorbent main body 2 to the back-side end, and extends from the -side end in the width direction W of the absorbent main body 2 to the other -side end in a plan view, and the back sheet 23 has the same longitudinal outer shape as the absorbent main body 2 as a whole (that is, has the same longitudinal outer shape as the crotch region a in the longitudinal direction L)CA substantially hourglass shape in which the corresponding portion narrows toward the inside in the width direction W). In the absorbent article of the present invention, the size and shape of the back sheet are not particularly limited as long as they can cover at least the entire surface of the non-skin-facing side of the absorbent body, and any size and shape can be adopted depending on various uses and the like. And the number of the first and second electrodes,in the above embodiment, as shown in fig. 1 to 6, the back sheet 23 is disposed on the non-skin-facing surface side in the thickness direction T of the absorbent main body 2, and is composed of a liquid-impermeable sheet that functions so as not to leak an excretion liquid such as urine excreted by the wearer to the outside.
In the present invention, the liquid-impermeable sheet usable as the back sheet is not particularly limited as long as it has various characteristics (for example, liquid impermeability, flexibility, strength, and preferably air permeability) usable as the back sheet of the absorbent article, and for example, a resin film such as polyethylene or polypropylene, a laminate in which a nonwoven fabric is bonded to a resin film, a nonwoven fabric such as a hydrophobic nonwoven fabric or a laminate nonwoven fabric (for example, SMS nonwoven fabric) and the like can be preferably used.
In the present invention, the liquid-impermeable sheet (for example, nonwoven fabric or the like) which can be used as the back sheet is not particularly limited as long as it has a predetermined liquid-impermeability (leak-proof property) and strength, and the weight per unit area is, for example, 5g/m2～100g/m2In the range of (1), preferably 10g/m2～50g/m2Within the range of (1). The thickness of the liquid-impermeable sheet is not particularly limited as long as the liquid-impermeable sheet can function as a back sheet of an absorbent article, and any thickness can be used depending on the desired liquid-impermeability, flexibility, strength, air permeability, and the like.
In the above embodiment, as shown in fig. 2 to 6, a liquid-impermeable back sheet 24 having substantially the same size and shape as the back sheet 23 is disposed on the skin-facing surface side of the back sheet 23 (between the absorbent body 21 and the back sheet 23). The back sheet 23 is made of a thermoplastic resin film such as polyethylene, and functions as follows: the leakage of excretory fluid such as urine discharged by a wearer is prevented so that the excretory fluid does not leak out to the clothing of the wearer. Further, if the absorbent article has such a back film, leakage of excretory fluid such as urine can be more effectively suppressed, but the back film is not an essential component of the absorbent article of the present invention, and therefore the absorbent article of the present invention may not have such a back film.
[ absorbent body ]
In the above embodiment, as shown in fig. 1, the absorbent body 21 is seen from the abdominal region a in the longitudinal direction L of the absorbent main body 2 in a plan viewF(specifically, the vicinity of the abdominal region side end in the longitudinal direction L) extends up to the back region aB(specifically, the vicinity of the back region side end in the longitudinal direction L). Further, the absorber 21 is formed from the 1 st region A in the width direction W of the absorbent body 2W1(specifically, in the vicinity of the -side end in the width direction W) extends to the 2 nd region A in the width directionW2(more specifically, near the end on the other side in the width direction W.) the absorber 21 is long in the longitudinal direction L as a whole, and has an inter-crotch region A in the longitudinal direction LCThe corresponding portion is narrowed inward in the width direction W, and has a substantially hourglass shape. In the absorbent article of the present invention, the size and shape of the absorbent body are not limited to those of the present embodiment, and at least the longitudinal length is long as it is as long as it is from the abdomen region to the back region in the longitudinal direction of the absorbent main body, and any longitudinal shape (for example, a rectangle, an ellipse, a gourd-shaped shape, etc.) can be adopted according to various uses and the like. In the above-described embodiment, as shown in fig. 1 to 6, the absorbent body 21 is disposed between the front sheet 22 and the back sheet 23 (specifically, between the front sheet 22 and the back film 24) in the thickness direction T of the absorbent main body 2, and is composed of 2-layer absorbent layers that function to absorb and retain excretory fluid of the wearer, such as urine, that has passed through the front sheet 22(i.e., the 1 st absorption layer 21A and the 2 nd absorption layer 21B).
In the absorbent body 2, the 1 st absorbent layer 21A of the 2-layer absorbent layer disposed on the skin-facing surface side and the 2 nd absorbent layer 21B disposed on the non-skin-facing surface side are bonded by an arbitrary bonding means (not shown) such as a hot melt adhesive, and the absorbent body 21 is constituted as an body, and in the 2-layer absorbent layer constituting the absorbent body 21, the 1 st absorbent layer 21A is formed from the abdominal region A in the longitudinal direction L of the absorbent body 2 in a plan viewF(specifically, the vicinity of the abdominal side end in the longitudinal direction L) extends up to the back region aB(specifically, the vicinity of the back side end in the longitudinal direction L). In addition, the 1 st absorbent layer 21A is formed in the 1 st region A in the width direction W of the absorbent main body 2W1(specifically, in the vicinity of the -side end in the width direction W) extends to the 2 nd region A in the width directionW2(more specifically, in the vicinity of the end on the other side in the width direction W.) the 1 st absorbent layer 21A as a whole is constituted by an absorbent member having an crotch region A which is long in the longitudinal direction L and which is in the longitudinal direction LCThe corresponding portion is narrowed inward in the width direction W, and has a substantially hourglass shape. In the present embodiment, the 1 st absorption layer 21A forms the outer shape of the absorber 21 in a plan view.
, the 2 nd absorbent layer 21B is located in the abdomen area A in the longitudinal direction L of the absorbent main body 2 in plan viewF(specifically, the vicinity of the abdominal side end in the longitudinal direction L) extends up to the back region aB(specifically, the vicinity of the back-side end in the longitudinal direction L.) however, both ends in the width direction W are respectively located at a position closer to both ends in the width direction W than both ends in the width direction W of the 1 st absorbent layer 21A (the -side end 21E in the width direction W)3And another side edges 21E4) Extends inward in the width direction W. The 2 nd absorption layer 21B is constituted by an absorbent member having a substantially rectangular outer shape elongated in the longitudinal direction L as a whole. By forming the 2 nd absorbent layer 21B so as to be disposed on the non-skin-facing surface side in this manner, the wearer can not easily perceive the 1 st absorptionA step difference at the end edge portions in the width direction W of the layer 21A and the 2 nd absorption layer 21B.
In the present invention, any absorbent member known in the art can be used as the absorbent members that can absorb and hold excretory fluid such as urine as the first absorbent layer and the second absorbent layer constituting the absorbent body, and any absorbent member can be used, and as such an absorbent member, for example, an absorbent member in which an absorbent core made of any absorbent material is covered with a core wrap sheet such as a tissue having hydrophilicity, or the like can be used.
In the above embodiment, as shown in fig. 1 to 3, the 1 st absorbent layer 21A is located at least in the crotch region a in a plan viewCIs measured (i.e., is aligned with a width-direction central axis C extending in the longitudinal direction L)LOverlapping portion) has a through-hole 21A penetrating the 1 st absorption layer 21A in the thickness direction TS. Further, as shown in fig. 1 to 2, the 2 nd absorbent layer 21B is also in the crotch region aCAnd the through hole 21A of the 1 st absorption layer 21A at the center in the width direction WsHas a through hole 21B at a position overlapping in the thickness direction TSThe through hole 21BSHas a through hole 21A in plan viewsA small size shape, and penetrates the 2 nd absorption layer 21B in the thickness direction T. The through hole 21AsAnd a through hole 21BSThrough holes are formed so as to communicate in the thickness direction T, and the entire body penetrates the absorbent body 21 in the thickness direction T, and the opening area is different stepwise in the thickness direction T. When the absorbent body hasIn the case of the through-hole, absorption of the excretory fluid in the thickness direction T can be promoted, and therefore, more excellent absorption performance (particularly absorption rate) can be exhibited.
In the urine absorption pad 1 of the present embodiment, the absorbent body 21 does not have to be constituted by 2 absorbent layers as in the above-described embodiment, and the absorbent body 21 may be constituted by an absorbent member having a single-layer structure, or may be constituted by an absorbent member having a multi-layer structure of 3 or more layers. The weight per unit area, thickness, and the like of the absorbent member usable as the absorbent layer constituting the absorbent body 21 are not particularly limited as long as the absorbent member has various characteristics (for example, absorbency, flexibility, and the like) that can function as the absorbent body 21 of the urine absorbent pad 1, and any weight per unit area, thickness, and the like can be adopted.
In the above embodiment, the absorber 21 is disposed in the abdominal region aFAnd a back region ABIs arranged to have a portion where both end edges in the width direction W of the absorber 21 (i.e., the -side end edge 21E in the width direction W3And another side edges 21E4) When the absorber 21 is disposed in this manner, even when the wearer sleeps on his side (i.e., when the excreta discharged by the wearer easily flows in the direction of gravity (specifically, in the direction outward in the width direction W of the absorbent main body portion 2)), the absorber 21 can reliably absorb the excreta flowing outward in the width direction W, and side leakage of the excreta can be more reliably prevented.
[ embossed portion ]
In the above embodiment, the absorber 21 has pairs of embossed portions 3, and pairs of embossed portions 3, 3 are respectively arranged on the center axis C in the width directionLA 1 st region A in the width direction (extending in the longitudinal direction L)W1And the 2 nd area A in the width directionW2And is recessed in the thickness direction T from the skin-facing surface As shown in FIG. 1, the pair of embossed portions 3, 3 are formed in the crotch region ACHas a linear planar shape extending in the longitudinal direction L and is provided inThe absorbent body 21 is recessed from the skin-facing surface side in the thickness direction T, and the 2-layer absorbent layers (the 1 st absorbent layer 21A and the 2 nd absorbent layer 21B) of the absorbent body 21 are made into a body by pressing, and the embossed portion 3 can be formed by pressing the 1 st absorbent layer 21A and the 2 nd absorbent layer 21B from the skin-facing surface in the thickness direction T by any embossing means, which may be heated or not.
In the present embodiment, the pairs of embossed portions 3, 3 are arranged such that the total length of the width direction length from the embossed portion 3 to the inner end edge in the width direction W of the base 41, the width direction length of the 1 st wall portion 42, and the width direction length of the 2 nd wall portion 43 is greater than the total length from the width direction central axis CLWhen the embossed portions 3, 3 are arranged in such a manner as , becomes bending starting points for the embossed portions 3, and the absorbent body 21 is likely to have the widthwise central axis C of the absorbent body 21 along which the absorbent body 21 is disposedLThe extending width direction central part protrudes toward the skin-facing surface side (i.e. along the length direction central axis C)WThe cross-sectional shape of (1) the absorbent article is formed into a substantially W-shape), and the is likely to have a higher standing height with respect to the leakage preventing wall portions 40, 40 than the projecting height of the widthwise central portion projecting toward the skin-facing surface side, so that the skin-facing surface at the widthwise central portion of the absorbent body 21 can be brought into close contact with or close to the crotch portion of the wearer to facilitate absorption of the excretory fluid discharged by the wearer, and side leakage of the excretory fluid can be more reliably prevented.
In the present invention, the shape of the embossed portion 3 in a plan view is not particularly limited, and any shape such as a wavy shape, a curved shape, and a zigzag shape may be adopted in addition to the straight shape as in the above-described embodiment. In the present embodiment, the embossed portion 3 may not be provided.
< leakage preventing wall >
In the urine absorption pad 1 of the above embodiment, the pair of leakage preventing wall portions 40, 40 are formed by pair of side sheets 4, the pair of side sheets 4, 4 are respectively positioned at both ends in the width direction W of the absorbent main body portion 2 and continuously extend over both ends in the longitudinal direction L, and 5 elastic members EL capable of contracting the pair of side sheets 4, 4 in the longitudinal direction L are arranged in the vicinity of the inner end portions in the width direction W of the pair of side sheets 4, 4.
Hereinafter, various structural members which can form the pair of leakage preventing wall portions 40, 40 of in the urine absorption pad 1 of the present invention will be described in more detail.
[ side sheet ]
In the above embodiment, the pair of side sheets 4, 4 are formed of band-shaped liquid-impermeable sheets that are long in the longitudinal direction L, and the band-shaped liquid-impermeable sheets are disposed at both ends in the width direction W of the absorbent main body 2 on the skin-facing surface side of the absorbent main body 2 (more specifically, the skin-facing surface side of the topsheet 22), and can function as a leakage preventing wall by rising up at the inner end edge in the width direction W when the urine absorbent pad 1 is worn.
In the present invention, the belt-shaped liquid-impermeable sheet that can be used as the side sheet is not particularly limited as long as it has various properties (for example, liquid-impermeability, skin touch, flexibility, strength (particularly, strength when wet), and the like) that can be used as the side sheet of the absorbent article, and for example, the following materials can be used: hydrophobic nonwoven fabrics (for example, spunbond nonwoven fabrics, point-bond nonwoven fabrics, SMS nonwoven fabrics, etc.) having hydrophobicity or imparted thereto; a synthetic resin film having liquid impermeability; or a laminate of a hydrophobic nonwoven fabric and a synthetic resin film.
The outer shape, weight per unit area, thickness, and the like of the belt-shaped liquid-impermeable sheet usable as the side sheet are not particularly limited as long as the effects of the present invention are not impaired, and any outer shape, weight per unit area, thickness, and the like can be adopted according to desired liquid impermeability, skin touch, flexibility, and the like.
In the present invention, the joining means that can be used to form the joined portions (the 1 st joined portion and the 2 nd joined portion described above) is not particularly limited as long as the effect of the present invention is not impaired, and any joining means such as an adhesive means such as a hot melt adhesive, a welding means such as ultrasonic welding, or the like can be used.
In the above embodiment, the inner end edge of the 1 st joint portion 44 in the longitudinal direction L linearly extends in the width direction W. As described above, when the inner end edge in the longitudinal direction L of the 1 st joint portion 44 linearly extends in the width direction W, the standing structure of the 1 st wall portion 42 and the 2 nd wall portion 43, which stands up with the inner end edge in the longitudinal direction L of the 1 st joint portion 44 as a starting point, is easily stabilized, and the function of the 2 nd wall portion 43 can be more reliably exhibited.
[ elastic Member ]
In the above embodiment, as shown in fig. 1, 5 (a plurality of) elastic members EL for contracting the pair of side sheets 4, 4 in the longitudinal direction L to promote the raising of the inner end edges in the width direction W are arranged in the longitudinal direction L in the vicinity of the inner end edges in the width direction W of the pair of side sheets 4, respectively.
In the present invention, the plurality of elastic members EL arranged in the pair of side sheets 4, 4 are not particularly limited as long as they can apply a contraction force in the longitudinal direction L to the absorbent main body 2 in the unfolded state (specifically, the side sheets 4, 4 pair of absorbent main body 2 via ), and any elastic member can be used, for example, a linear rubber or a flat rubber made of natural rubber, or an elastic member formed by molding a thermoplastic elastic material such as polyurethane or ethylene-vinyl acetate copolymer (EVA) into a linear or belt shape.
The dimension and shape of the elastic member EL usable for the urine absorption pad 1 of the present invention are not particularly limited as long as the absorbent main body 2 in the developed state can be contracted in the longitudinal direction L by the side sheet 4, and any dimension and shape according to the application, the size and the like of the urine absorption pad 1 can be adopted, and as such dimension and shape, for example, the length in the longitudinal direction of the elastic member EL is 1/4 or more, preferably 1/3 or more, and the fineness is in the range of 200dtex to 800dtex, preferably 300dtex to 700dtex, of the entire length of the urine absorption pad 1, and as long as the absorbent main body in the developed state can be contracted in the longitudinal direction by the side sheet, the number of the elastic members EL is not particularly limited, and any number of the elastic members such as 1, 2, 3 or more can be arranged for the leakage preventing wall portions at .
In the urine absorption pad 1 of the present embodiment, as a preferable aspect, the absorber 21 is in the crotch region a in a plan viewCHas both end edges in the width direction W of the absorber 21 (i.e., -side end edges 21E in the width direction W)3And another side edges 21E4) And a narrowed portion 25 narrowed inward in the width direction W. The abdominal region A of the constriction 25FThe side end portion is located at the position in the longitudinal direction L in engagement with the extended portion 45OThe longitudinal direction L of the substrate. In the case of the present embodiment, the narrowing portion 25 and the crotch region aCApproximately so that the abdominal region A of the constriction 25FThe side end part is an crotch region ACAbdominal region A ofFThe end of the side.
By having the above-described structure, in the present urine absorbent pad 1, the end portion of the narrowed portion 25 which is easily deformed in the thickness direction T is provided in the engagement extending portion 45０The corresponding position. Here, the engaged extension 45 in the 2 nd wall portion 43OThe rigidity of the joined portions becomes relatively high. Therefore, even if the end portion of the constricted portion 25 is deformed, the 2 nd wall portion 43 can be suppressed from being deformed, and a gap can be suppressed from being generated between the skin surface and the surface of the 2 nd wall portion 43 on the skin-facing surface side. This allows the surface of the 2 nd wall portion 43 on the skin-facing surface side to be gently deformed along the curved surface of the skin surface. When the absorber 21 has a shape having the narrowing portion 25, it is in the crotch region aCIn the absorbent pad 1, since the influence of the absorber 21 on the rigidity is small and the degree of freedom of deformation and movement of the with respect to the leakage preventing wall portions 40 and 40 is high, the can be made to closely adhere to the leakage preventing wall portions 40 and 40 so as to follow the body shape (the shape of the crotch portion) of the wearer when the absorbent pad 1 is worn by the wearerThe urine absorption pad 1 of the absorbent body 21 is less likely to form a gap between the body (crotch portion) of the wearer and the pair of leakage preventing walls 40, 40 of , and therefore, side leakage of the excretory fluid can be more reliably prevented.
In the urine absorption pad 1 of the present embodiment, the abdomen area a of the elastic members EL1 and EL2 positioned in the 2 nd wall part 43 among the plurality of elastic members EL is preferably set as the one in which the elastic members EL are arrangedFThe side end portion is located at the position in the longitudinal direction L in engagement with the extended portion 45OThe longitudinal direction L of the substrate.
With the above configuration, the present urine absorbent pad 1 and the end portions of the elastic members EL1 and EL2 are joined to the extension portion 45 in the longitudinal direction LOIn comparison with the case of being located on the outer side, the degree of curvature of the absorbent body 2 or the absorbent body 21 when it is bent from the upper side to the lower side in the thickness direction T can be made relatively gentle, and therefore, the portion of the absorbent body 2 that can be bent in the thickness direction can be further suppressed from being formed with a gap between the skin surface and the surface on the skin-facing surface side of the 2 nd wall portion 43 of the leakage preventing wall portion 40 due to the deformation of the 2 nd wall portion 43, and the surface on the skin-facing surface side of the 2 nd wall portion 43 can be made to deform more gently along the curved surface of the skin surface.
In the urine absorption pad 1 of the present embodiment, the absorbent body 21 preferably has an opening (through-hole 21A) extending from the surface of the absorbent body 21 to the inside in the thickness direction T and extending in the longitudinal direction LsAnd a through hole 21BSAt least of these openings) and the position in the longitudinal direction L of at least portion of these openings is located in engagement with the extension 45OThe longitudinal direction L of the substrate.
With the above-described structure, the urine absorbent pad 1 of the present invention has the opening (through-hole 21A) in the absorbent body 21, which is low in rigidity and easily deformableSAnd a through hole 21BSAt least ) of the portions are provided at least portion of the engaging extension 45０The corresponding position. Here, the joined extending portion 45 of the 2 nd wall portion 43OThe rigidity of the joined portions becomes relatively high. Therefore, even if the portion of the absorber 21 including the openings is deformed, the deformation can be suppressedThe 2 nd wall portion 43 is deformed, and a gap can be suppressed from being generated between the surface of the 2 nd wall portion 43 on the skin-facing surface side and the skin surface. Therefore, the surface of the 2 nd wall portion 43 on the skin-facing surface side can be gently deformed along the curved surface of the skin surface.
In the urine absorption pad 1 of the present embodiment, the abdomen area a in the longitudinal direction L of the embossed portion 3 is preferably definedFThe side end portion of the joint extending portion 45 is located at the position in the longitudinal direction LOThe longitudinal direction L of the substrate. With the above-described structure, in the urine absorbent pad 1, the outer portion of the end portion in the longitudinal direction L of the embossed portion 3, which is less rigid and more deformable than the embossed portion 3, is provided on the joining extension 45OThe corresponding position. Here, the engaged extension 45 in the 2 nd wall portion 32OThe rigidity of the joined portions becomes relatively high. Therefore, even if the outer portion of the end portion of the embossed portion 3 in the longitudinal direction L is deformed, the 2 nd wall portion 43 can be suppressed from being deformed, and the gap between the surface of the 2 nd wall portion 43 on the skin-facing surface side and the skin surface can be suppressed from being generated. This allows the surface of the 2 nd wall portion 43 on the skin-facing surface side to be gently deformed along the curved surface of the skin surface.
In the urine absorption pad 1 of the present embodiment, the stretchable region S is preferably formed as a single layerEThe inner portion in the width direction W is more likely to contract than the outer portion in the width direction W. For example, the expansion region SEThe elastic member EL of (2) is formed as: the elastic member EL1 on the inner side in the width direction W is more likely to contract than the elastic member EL2 on the outer side in the width direction W. With the above configuration, in the urine absorption pad 1, the inner portion in the width direction W of the 2 nd wall portion 43 can be easily raised with respect to the outer portion in the width direction. Therefore, the 2 nd wall portion 43 can be easily erected, and the erected structure can be easily maintained.
In the urine absorption pad 1 of the present embodiment, preferably has a fixed end portion joined to the absorbent body 2 in the longitudinal direction L and a free end portion located opposite to the fixed end portion in the width direction W and not joined to the absorbent body 2 for each of the leakage preventing wall portions 40, 40. by having the above-described structure, the length in the longitudinal direction of the elastic member EL3 on the fixed end side is longer than the length in the longitudinal direction of the elastic member EL1 on the free end side, in the plurality of elastic members EL, the urine absorption pad 1 can easily maintain the standing structure formed by the 1 st wall portion 42 and the 2 nd wall portion 43 in the outer portion in the width direction W of the leakage preventing wall portion 40, and can further secure durability against the excretion liquid directed outward in the width direction W, and the inner portion in the width direction W of the leakage preventing wall portion 40 has a high degree of freedom of deformation and movement, and the leakage preventing wall portion 40 can easily follow the body shape of the wearer (shape of the crotch portion) to be closely attached, whereby the urine absorption pad 1 can satisfactorily exert the function of the leakage preventing wall portion 40.
In the urine absorption pad 1 of the present embodiment, the stretchable region S is preferably formed as a single layerEIs shorter in the longitudinal direction than the abdominal region AFThe length of the No. 2 joining part 45 in the longitudinal direction and the back region ABThe total length of the longitudinal length of the 4 th joint part 45 in (1). With the above configuration, the present urine absorbent pad 1 can be prevented from excessively contracting during wearing. Further, when the wearer sleeps on his side, the expansion region S of the 2 nd wall part 43EThe region S of the second wall 43 other than the regionESupporting to maintain the expansion region SEThe second wall portion 43 is formed in a shape of a raised portion, so that the discharged liquid is less likely to pass over the second wall portion 43.
In the urine absorbent pad 1 of the present embodiment, as a preferable mode, the urine absorbent pad 1 is folded at a plurality of folding positions in the longitudinal direction L along a folding line extending in the width direction W at the time of packaging. Furthermore, the most abdominal region A of the plurality of folded positionsFThe folding position of the side is more than the joining extension 45 of the 2 nd joining part 45OThe inner end edge in the longitudinal direction L of (a) is located inward. That is, the folded position does not overlap with the 1 st joint part 44 and the 2 nd joint part 45. With the above-described structure, when the folded urine absorption pad 1 is unfolded, the 1 st wall portion 42 and the 2 nd wall portion 43 do not have creases that easily cause side leakage, and the 2 nd joining portion 45 (the joining extension portion 45) can be effectively utilizedO) The side leakage prevention function of (1).
In the urine absorption pad 1 of the above embodiment, as shown in fig. 1, the 5 (or a plurality of) elastic members EL arranged respectively at pairs of the leakage preventing wall portions (side pieces) are formed such that the length in the longitudinal direction of the elastic member EL positioned on the outer side in the width direction W is larger than the length in the longitudinal direction of the elastic member EL positioned on the inner side in the width direction W as a whole, and when the length in the longitudinal direction of the elastic member EL positioned on the outer side in the width direction W is formed larger than the length in the longitudinal direction of the elastic member EL positioned on the inner side in the width direction W in this way, the standing structure formed by the 1 st wall portion 42 and the 2 nd wall portion 43 is easily maintained at the outer side portions in the width direction W of the leakage preventing wall portions 40, 40 in the width direction W at , and durability against the discharged liquid toward the outer side in the width direction W can be further ensured at step, and particularly, the standing structure formed by the 1 st wall portion 42 and the 2 nd wall portion 43 is more easily maintained at the outer side portions in the width direction W of the elastic member EL3 of the leakage preventing wall portions.
In the above embodiment, as shown in fig. 1, the absorbent body 21 is in the abdominal region aFHas a wide part 21M, the wide part 21M being a part of the absorbent body 21 having the largest length in the width direction W, and being in the abdomen area AFAnd the crotch region ACHas a narrow width portion 21N at a boundary portion thereof, the narrow width portion 21N having a length in the width direction W of the absorber 21 larger than that of the wide width portion 21M (i.e., the abdomen area a)FThe maximum length of the absorber 21 in the width direction W) is small, and the narrow portion 21N overlaps with the above-described constricted region in a plan view. When in the abdominal region A like thisFAnd the crotch region ACHas a narrow width part 21N (the length of the absorber 21 in the width direction W in the narrow width part 21N is larger than that of the abdomen area A)FThe maximum length in the width direction W of the absorbent body 21 in (b) is small), the rigidity of the portion of the urine absorption pad 1 having the narrow width portion 21N is relatively low, and therefore, when the urine absorption pad 1 is worn, the urine absorption pad 1 is easily bent so that the surface on the skin-facing surface side is recessed from the portion having the narrow width portion 21N. In addition, in a plan view, the narrow width portion 21N of the urine absorption pad 1 overlaps the contraction region,therefore, when the urine absorption pad 1 is worn, the abdomen area A having a large curvature is formedFAnd the crotch region ACThe boundary portion (i.e., the portion overlapping the narrow portion 21N in the thickness direction T) of the leakage preventing wall portion is likely to rise toward the skin-facing surface side in a state where the surface of the 2 nd wall portion 43 of the leakage preventing wall portion on the skin-facing surface side is maintained in a planar form substantially parallel to the surface of the absorption body portion 2 on the skin-facing surface side, as shown in fig. 7. Thus, the urine absorption pad 1 can secure a portion (i.e., the abdominal region A) where the curvature becomes large when wornFAnd the crotch region ACThe boundary portion of (b) has a larger contact area with the skin surface of the wearer (in other words, a gap can be made less likely to form between the leakage preventing wall portion and the skin surface of the wearer), so that side leakage of the excretory fluid can be more reliably prevented.
The urine absorption pad 1 of the present invention is not limited to the above-described embodiments, and can be appropriately combined, substituted, modified, and the like without departing from the object and the gist of the present invention. In the present specification, the numbers such as "1 st" and "2 nd" are for the purpose of distinguishing between items to which numbers are added, and do not indicate the order, priority, importance, and the like of the items.
Description of the reference numerals
1 urine absorption pad
2 absorbent body part
21 absorbent body
40 leakage preventing wall part
41 base part
42 st wall part
43 No. 2 wall part
44 st joint part
45 nd 2 nd joint
45iJoint main body part
45OJoint extension
SEExpansion zone
SUNon-stretch area
An EL elastic member.

Claims (10)

  1. A urine absorption pad of the type 1 to , having a longitudinal direction, a width direction and a thickness direction, comprising an absorbent main body having an absorber, the absorbent main body having an abdomen region, a crotch region and a back region in the longitudinal direction, and pairs of leakage preventing walls, the pairs of leakage preventing walls being located at both ends of the absorbent main body in the width direction and continuously extending over both ends in the longitudinal direction,
    the pair of leakage preventing wall portions each have:
    a base portion that faces the absorbent main body portion, and at least an outer end edge in the width direction of the base portion is fixed to the absorbent main body portion;
    a 1 st wall portion connected to an inner end edge of the base portion in the width direction and rising toward a skin-facing surface side during wearing;
    a 2 nd wall portion connected to an outer end edge of the 1 st wall portion in the width direction and rising toward a skin-facing surface side when worn;
    a 1 st joining portion that joins the base portion and the 1 st wall portion at least in the abdomen area, has a predetermined length in the width direction, and extends inward from an end edge of the leakage preventing wall portion in the length direction;
    a 2 nd joining portion that joins the 1 st wall portion and the 2 nd wall portion at least in the abdomen region, and that has a predetermined length in the width direction and extends inward from an end edge of the leakage preventing wall portion in the length direction, the 2 nd joining portion including a joining main body portion that is located on an end edge side of the leakage preventing wall portion in the length direction and a joining extension portion that extends inward in the length direction from an outer portion in the width direction of the joining main body portion; and
    a plurality of elastic members arranged in a plan view such that: the plurality of elastic members extend in the longitudinal direction from an inner end edge of the joint main body portion in the abdomen region or a position inside thereof toward the back region, and are arranged in the width direction,
    the 2 nd wall portion has a stretchable region extending in the longitudinal direction of the elastic member located in the 2 nd wall portion among the plurality of elastic members, and non-stretchable regions located on both outer sides in the longitudinal direction of the stretchable region,
    the joint extension portion extends a predetermined longitudinal length from the widthwise outer side of the stretchable region to the lengthwise inner side.
  2. 2. The urine absorption pad as set forth in claim 1,
    the absorber has a narrowing portion in the crotch region in a plan view, the narrowing portion being formed by narrowing both end edges of the absorber in the width direction inward in the width direction,
    the position of the abdomen region-side end portion of the narrowing portion in the longitudinal direction is located in a region overlapping with the longitudinal-direction range of the engaging extension portion.
  3. 3. The urine absorption pad as claimed in claim 1 or 2,
    the position in the longitudinal direction of the end portion on the abdomen area side of the elastic member located in the 2 nd wall portion among the plurality of elastic members is located in a region overlapping with the longitudinal direction range of the joining extension portion.
  4. 4. The urine absorption pad as claimed in any of claims 1 to 3, wherein,
    the absorbent body has an opening extending from the surface of the absorbent body to the inside in the thickness direction and extending in the longitudinal direction,
    at least parts of the opening are located in a region overlapping with the longitudinal range of the engagement extension in the longitudinal direction.
  5. 5. The urine absorption pad as claimed in any of claims 1 to 4,
    the absorbent body includes pairs of embossed portions, the pairs of embossed portions being respectively arranged in a widthwise 1 st region and a widthwise 2 nd region partitioned by a widthwise central axis extending in the longitudinal direction and being recessed in the thickness direction from a skin-facing surface,
    the position in the longitudinal direction of the end portion on the abdomen region side in the longitudinal direction of the embossed portion is located in a region overlapping with the longitudinal direction range of the joining extension portion.
  6. 6. The urine absorption pad as claimed in any of claims 1 to 5, wherein,
    the inner portion in the width direction of the stretchable region is more easily stretchable than the outer portion in the width direction of the stretchable region.
  7. 7. The urine absorption pad as claimed in any of claims 1 to 6,
    the pairs of leakage preventing wall portions each have a fixed end portion joined to the absorbent main body portion in the longitudinal direction and a free end portion not joined to the absorbent main body portion, the free end portion being located opposite to the fixed end portion in the width direction,
    among the plurality of elastic members, the length of the elastic member on the fixed end side in the longitudinal direction is longer than the length of the elastic member on the free end side in the longitudinal direction.
  8. 8. The urine absorption pad as claimed in any of claims 1 to 7, wherein,
    the pair of leakage preventing wall portions each further includes:
    a 3 rd joint portion that joins the base portion and the 1 st wall portion in the back region and has a predetermined length in the width direction, the 3 rd joint portion extending inward from an end edge of the leakage preventing wall portion in the length direction and facing the 1 st joint portion in the length direction; and
    a 4 th joint portion that joins the 1 st wall portion and the 2 nd wall portion in the back portion region, has a predetermined width direction length, extends inward from an end edge of the leakage preventing wall portion in the length direction, and is opposed to the 2 nd joint portion in the length direction, the 4 th joint portion including a back joint main body portion that is located on an end edge side of the leakage preventing wall portion in the length direction, and a back joint extension portion that extends inward in the length direction from an outer portion of the back joint main body portion in the width direction,
    the plurality of elastic members extend in the longitudinal direction from an inner end edge of the back section joining main body section or a position inside the back section joining main body section toward the abdomen section in a plan view,
    the back joint extension portion extends a predetermined longitudinal length from the outer side in the width direction of the stretchable region to the inner side in the longitudinal direction.
  9. 9. The urine absorption pad as set forth in claim 8,
    the length of the stretchable region in the longitudinal direction is smaller than the total length of the 2 nd joint in the abdominal region and the length of the 4 th joint in the back region in the longitudinal direction.
  10. 10. The urine absorption pad as claimed in any of claims 1 to 9, wherein,
    the urine absorption pad is folded along a folding line extending in the width direction at a plurality of folding positions in the length direction when packaged,
    the folded position closest to the abdomen area side among the plurality of folded positions is located inward of an inner end edge in the longitudinal direction of the joining extension portion of the 2 nd joining portion.
CN201780091872.5A 2017-06-30 2017-09-08 Urine absorption pad Active CN110740718B (en)

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JP2017129856A JP6253836B1 (en) 2017-06-30 2017-06-30 Urine pad
JP2017-129856 2017-06-30
PCT/JP2017/032557 WO2019003462A1 (en) 2017-06-30 2017-09-08 Urine-receiving pad

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CN110740718A true CN110740718A (en) 2020-01-31
CN110740718B CN110740718B (en) 2021-08-20

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JP6956776B2 (en) * 2019-12-26 2021-11-02 ユニ・チャーム株式会社 How to make a urine absorbing pad

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WO2012133331A1 (en) * 2011-03-31 2012-10-04 ユニ・チャーム株式会社 Disposable diaper
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WO2019003462A1 (en) 2019-01-03

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