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CN-122028886-A - Absorbent article

CN122028886ACN 122028886 ACN122028886 ACN 122028886ACN-122028886-A

Abstract

The absorbent article is provided with a main body portion extending in the longitudinal direction and including a front surface sheet, a back surface sheet, and an absorber, the main body portion having a abdomen-side region covering the abdomen of a wearer and a back-side region covering the back of the wearer. The main body includes a pair of leakage preventing gathers disposed so as to be separated from each other in the lateral direction, each of the leakage preventing gathers including a standing portion capable of standing up with respect to the front sheet, and a1 st stretchable member provided in the standing portion and stretchable in the longitudinal direction, a pair of 2 nd stretchable members provided on both outer sides of the pair of standing portions in the lateral direction and stretchable in the longitudinal direction, and a liquid diffusion sheet provided so as to overlap the absorbent body when viewed from the skin side. A low expansion region in which a pair of 1 st expansion members is provided in the longitudinal direction and a pair of 2 nd expansion members is not provided is formed in the back side region. The liquid diffusion sheet includes an overlapping portion disposed in the low stretch region.

Inventors

  • Omori Preface
  • FUJIMOTO KAZUYA

Assignees

  • 尤妮佳股份有限公司

Dates

Publication Date
20260512
Application Date
20260114
Priority Date
20250919

Claims (16)

  1. 1. An absorbent article, wherein, The absorbent article comprises a main body portion extending in a longitudinal direction, the main body portion including a front sheet disposed on a skin side of a wearer, a back sheet disposed on a non-skin side opposite to the skin side, and an absorber disposed between the front sheet and the back sheet, the main body portion having a abdomen-side region located on an abdomen-side of the wearer when worn and a back-side region located on a back-side of the wearer when worn, The main body portion includes: A pair of leakage preventing gathers disposed so as to be separated from each other in a lateral direction perpendicular to the longitudinal direction, the pair of leakage preventing gathers each including a standing portion capable of standing up with respect to the top sheet, and a1 st stretchable member provided in the standing portion and stretchable in the longitudinal direction; a pair of 2 nd expansion and contraction members provided on both outer sides of the pair of rising portions in the lateral direction and capable of expanding and contracting in the longitudinal direction, and A liquid diffusion sheet that is provided so as to overlap the absorbent body when viewed from the skin surface side, In the back side region, a low expansion region in which the pair of 1 st expansion members are provided in the longitudinal direction and the pair of 2 nd expansion members are not provided is formed, The liquid diffusion sheet includes an overlapping portion disposed in the low stretch region.
  2. 2. The absorbent article of claim 1, wherein, The liquid diffusion sheet has a front side edge disposed on the back side with respect to a center line passing through a center of the main body portion in the longitudinal direction.
  3. 3. The absorbent article of claim 2, wherein, A portion of the liquid diffusion sheet that is closer to the back side than a center line passing through a center in the longitudinal direction of the liquid diffusion sheet is disposed in the back side region.
  4. 4. The absorbent article of claim 2, wherein, A pair of wing parts extending to both outer sides of the absorber in the transverse direction are provided in the main body part, The side edges of each of the pair of wing portions have a widened portion that is curved at the back side from a center line passing through a center in the longitudinal direction of the main body portion so as to spread outward in the lateral direction as going toward the back side, The liquid diffusion sheet is disposed on the back side at least partially with respect to a virtual line passing through a point on the widened portion at which an angle of a tangent line of the widened portion with respect to the longitudinal direction is switched from less than 45 degrees to 45 degrees or more when the tangent line is along each of the widened portions of the pair of the widened portions from the abdominal side to the back side.
  5. 5. The absorbent article of claim 1, wherein, The length in the longitudinal direction of the overlapping portion is more than half the length in the longitudinal direction of the low stretch region, The overlapping portion overlaps the absorber when viewed from the skin surface side.
  6. 6. The absorbent article of claim 1, wherein, The width of the overlapping portion in the lateral direction is larger than the distance in the lateral direction between the pair of rising portions in a non-rising state in which the pair of rising portions are inclined inward.
  7. 7. The absorbent article of claim 1, wherein, The pair of rising portions can rise along a pair of rising lines, respectively, which extend in the longitudinal direction, The liquid diffusion sheet is disposed inside the pair of rising lines.
  8. 8. The absorbent article of claim 1, wherein, The liquid diffusion sheet is a resin-made open film having a plurality of through holes, The width of the open end of each of the plurality of through holes on the non-skin surface side is narrower than the width of the open end of each of the plurality of through holes on the skin surface side.
  9. 9. The absorbent article of claim 1, wherein, The liquid diffusion sheet is fluffy than the surface sheet.
  10. 10. The absorbent article of claim 1, wherein, The liquid diffusion sheet has a ridge-groove structure in which ridge portions and groove portions extending in the longitudinal direction are alternately arranged in the lateral direction.
  11. 11. The absorbent article of claim 1, wherein, The absorbent article further includes a pair of fastening tabs that extend outward in the lateral direction from the back side region and are engaged with the abdominal side region from the non-skin side.
  12. 12. The absorbent article of claim 11, wherein, The liquid diffusion sheet overlaps the absorbent body between the pair of fastening tabs when viewed from the skin surface side.
  13. 13. The absorbent article of claim 11, wherein, The liquid diffusion sheet overlaps the absorbent body in a region of the back side region that is closer to the abdomen side than the pair of fastening tabs when viewed from the skin side.
  14. 14. The absorbent article of claim 1, wherein, A pair of wing parts extending to both outer sides of the absorber in the transverse direction are provided in the main body part, The side edges of each of the pair of wing portions have a widened portion that is bent at the back side from a center line passing through a center in the longitudinal direction of the main body portion so as to spread outward in the lateral direction as going toward the back side, and a straight portion that extends linearly from the widened portion toward the back side, At least part of the liquid diffusion sheet is disposed on the back side of a connection portion between the widened portion and the linear portion in the longitudinal direction.
  15. 15. The absorbent article of claim 1, wherein, The liquid diffusion sheet is provided with a guide mark for guiding the position of the buttocks of the wearer so as to be visible from the skin side view.
  16. 16. The absorbent article of claim 1, wherein, The absorbent body comprises an absorbent core having water absorbency, The absorbent core includes channel portions having a lower weight per unit area than other portions of the absorbent core, The liquid diffusion sheet is disposed on the back side with respect to the channel portion.

Description

Absorbent article Technical Field The present disclosure relates to an absorbent article. Background Patent document 1 describes an absorbent article having a liquid-permeable top sheet, a liquid-impermeable back sheet, an absorber disposed between the top sheet and the back sheet, and a diffusion sheet disposed between the top sheet and the absorber. Side panels provided with standing elastic members are joined to both side edges of the top sheet in the width direction. Patent document 2 describes an absorbent article provided with a leakage-proof cuff for preventing leakage of excreted urine to the outside. Prior art literature Patent literature Patent document 1 Japanese patent No. 6906922 Patent document 2 Japanese patent No. 5679777 Disclosure of Invention Problems to be solved by the invention In the absorbent articles described in patent document 1 and patent document 2, when the wearer is in a sleeping position, excrement such as urine flows along the skin of the wearer toward the back side of the wearer by gravity. It is desirable to effectively suppress leakage of excrement on the back side of the wearer. The present disclosure aims to effectively suppress leakage of excrement on the back side of a wearer. Solution for solving the problem An absorbent article according to one embodiment includes a main body portion extending in a longitudinal direction, the main body portion including a front sheet disposed on a skin side of a wearer, a back sheet disposed on a non-skin side opposite to the skin side, and an absorber disposed between the front sheet and the back sheet, the main body portion including a abdomen-side region located on an abdomen-side of the wearer when worn, and a back-side region located on a back-side of the wearer when worn. The main body includes a pair of leakage preventing gathers disposed so as to be separated from each other in a lateral direction perpendicular to the longitudinal direction, each of the leakage preventing gathers including a standing portion capable of standing with respect to the front sheet and a 1 st stretchable member provided in the standing portion and stretchable in the longitudinal direction, a pair of 2 nd stretchable members provided on both outer sides of the pair of standing portions in the lateral direction and stretchable in the longitudinal direction, and a liquid diffusion sheet provided so as to overlap the absorbent body when viewed from the skin side. A low expansion region in which a pair of 1 st expansion members is provided in the longitudinal direction and a pair of 2 nd expansion members is not provided is formed in the back side region. The liquid diffusion sheet includes an overlapping portion disposed in the low stretch region. In the absorbent article according to the present embodiment, the standing portion stands up with respect to the front sheet by the contraction of the 1 st stretchable member, whereby side leakage of excrement (for example, urine) can be suppressed. Further, since the absorbent article is attached to the leg hole of the wearer by contraction of the pair of 2 nd stretchable members, leakage of excrement from the absorbent article, which is not completely blocked by the pair of opposite sides, can be suppressed. In the absorbent article according to the present aspect, the low stretch region in which the 1 st stretch member is provided and the 2 nd stretch member is not provided in the longitudinal direction is formed in the back side region, and the liquid diffusion sheet includes an overlapping portion disposed in the low stretch region. According to this configuration, when the excrement flows to the back side and reaches the low expansion region when the wearer is in a sleeping position, the excrement is diffused by the overlapping portion of the liquid diffusion sheet. This allows the excrement reaching the low expansion region where the contraction force of the 2 nd expansion member does not act to be absorbed in a wide range of the absorber. Therefore, according to the absorbent article of the present embodiment, leakage of excrement on the back side of the wearer can be effectively suppressed. The front side edge of the liquid diffusion sheet may be disposed on the back side with respect to a center line passing through the center of the body portion in the longitudinal direction. According to this aspect, the liquid diffusion sheet can diffuse the excrement on the back side where the excrement flows by gravity in the sleeping position, and the excrement can be absorbed in a wider range of the absorber. On the other hand, on the abdomen side where the liquid diffusion sheet is not disposed (the region where the excrement needs to be absorbed in the direction not affected by the gravity in the sleeping position), the distance between the skin surface of the wearer and the absorber is kept relatively short in response to the absence of the liquid diffusion sheet, so that the excrement can be absorbed rap