Absorbent article

Patent metadata

Field	Value
Publication number	US-2019125596-A1
Application number	US-201716088911-A
Country	US
Kind code	A1
Filing date	Feb 23, 2017
Priority date	Mar 30, 2016
Publication date	May 2, 2019
Grant date	—

Abstract

An absorbent article includes an absorber having a front surface side sheet, a back surface side sheet disposed on the back surface side of the front surface side sheet, cells each of which is surrounded by bonded portions of the front surface side sheet and the back surface side sheet and inside each of which the front surface side sheet and the back surface side sheet are not bonded, and particulate materials which include superabsorbent polymer particles and which are contained in each of the cells. The bonded portions are arranged in continuous line shapes or dotted line shapes so as to form same-sized regular hexagons, which connect each other as unit shapes to be a honeycomb shape. All the cells are the same-sized regular hexagonal cells each of which is surrounded by the bonded portions.

First claim

1 . An absorbent article comprising an absorber including:
a front surface side sheet; a back surface side sheet disposed on the back surface side of the front surface side sheet; a plurality of cells each of which is surrounded by bonded portions of the front surface side sheet and the back surface side sheet, and inside each of which the front surface side sheet and the back surface side sheet are not bonded; and particulate materials which include superabsorbent polymer particles and which are contained in the cells, wherein the bonded portions are provided in continuous line shapes or dotted line shapes so as to form a honeycomb shape having the same-sized regular hexagons as unit shapes, all the cells are the same-sized regular hexagonal cells each of which is surrounded by the bonded portions, and the bonded portions positioned on at least one side of each cell are weak bonded portions which can be peeled off due to a swelling force of the superabsorbent polymer particles in the cells adjacent to the bonded portions.

2 . The absorbent article according to claim 1 , comprising
a plurality of the maximum enlargement sections in each of which a portion composed of six or more cells aligned in two or more directions is surrounded by strong bonded portions which are not peeled off against the swelling force of the superabsorbent polymer particles in the adjacent cells, wherein the bonded portions positioned inside the strong bonded portions in the maximum enlargement sections, are the weak bonded portions, and peripheral edge shapes of the maximum enlargement sections are closed shapes formed by connecting two to four continuous sides per each cell in cells along the peripheral edges of the maximum enlargement sections.

3 . The absorbent article according to claim 1 ,
wherein longitudinal-strong-bond lines on which the strong bonded portions are continuously provided in the front-back direction along the maximum length of the absorber, are provided in the center portion and the both side portions in the width direction of the absorber, respectively a plurality of lateral-strong-bond lines on which the strong bonded portions are provided continuously in the width direction or the oblique direction from the longitudinal-strong-bond line in the center portion to each of the longitudinal-strong-bond lines in the both side portions is provided at intervals in the front-back direction, and sections, which are surrounded by the longitudinal-strong-bond lines and the lateral-strong-bond lines so as to be partitioned, are the maximum enlargement sections in which the bonded portions positioned between cells in the sections are only the weak bonded portions.

4 . The absorbent article according to claim 3 ,
wherein the lateral-strong-bond lines are formed in a zigzag shape extending in the front-back direction while repeatedly bending left and right between the longitudinal-strong-bond line in the center portion and each of the longitudinal-strong-bond lines in the both side portions.

5 . The absorbent article according to claim 1 ,
wherein the bonded portions are arranged such that the parallel opposite sides of the regular hexagons formed in the honeycomb-shaped bonded portions are along the width direction, at least one low-swelling-cell row in which all of the bonded portions on the both side edges thereof aligned linearly in the front-back direction are the strong bonded portions is provided in the center in the width direction of the absorber, and the both sides in the width direction of the low-swelling-cell row, have a higher swellable height than the low-swelling-cell row.

6 . The absorbent article according to claim 5 ,
wherein the low-swelling-cell row does not contain a superabsorbent polymer particle or contains a smaller amount of the superabsorbent polymer particles per unit area than the cells on the both sides in the width direction of the low-swelling-cell row.

7 . The absorbent article according to claim 2 ,
wherein the bonded portions are portions at which the front surface side sheet and the back surface side sheet are welded, the weak bonded portions and the strong bonded portions are provided in dotted line patterns, the line width of the weak bonded portions is narrower than the line width of the strong bonded portions, and the point interval of the weak bonded portions is wider than the point interval of the strong bonded portions.

8 . The absorbent article according to claim 1 ,
wherein the bonded portion is not provided at positions where the sides on which the weak bonded portions are positioned intersect with each other in the cells.

9 . The absorbent article according to claim 1 ,
wherein at least cells arranged at positions through which the front and back ends of the absorber pass and cells in the both side portions in an intermediate portion of the front-back direction of the absorber are empty cells which do not contain a superabsorbent polymer particle or which contains a smaller amount of the superabsorbent polymer particles per unit area than other cells.

10 . The absorbent article according to claim 2 ,
wherein longitudinal-strong-bond lines on which the strong bonded portions are continuously provided in the front-back direction along the maximum length of the absorber, are provided in the center portion and the both side portions in the width direction of the absorber, respectively a plurality of lateral-strong-bond lines on which the strong bonded portions are provided continuously in the width direction or the oblique direction from the longitudinal-strong-bond line in the center portion to each of the longitudinal-strong-bond lines in the both side portions is provided at intervals in the front-back direction, and sections, which are surrounded by the longitudinal-strong-bond lines and the lateral-strong-bond lines so as to be partitioned, are the maximum enlargement sections in which the bonded portions positioned between cells in the sections are only the weak bonded portions.

11 . The absorbent article according to claim 2 ,
wherein the bonded portions are arranged such that the parallel opposite sides of the regular hexagons formed in the honeycomb-shaped bonded portions are along the width direction, at least one low-swelling-cell row in which all of the bonded portions on the both side edges thereof aligned linearly in the front-back direction are the strong bonded portions is provided in the center in the width direction of the absorber, and the both sides in the width direction of the low-swelling-cell row, have a higher swellable height than the low-swelling-cell row.

12 . The absorbent article according to claim 3 ,
wherein the bonded portions are arranged such that the parallel opposite sides of the regular hexagons formed in the honeycomb-shaped bonded portions are along the width direction, at least one low-swelling-cell row in which all of the bonded portions on the both side edges thereof aligned linearly in the front-back direction are the strong bonded portions is provided in the center in the width direction of the absorber, and the both sides in the width direction of the low-swelling-cell row, have a higher swellable height than the low-swelling-cell row.

13 . The absorbent article according to claim 4 ,
wherein the bonded portions are arranged such that the parallel opposite sides of the regular hexagons formed in the honeycomb-shaped bonded portions are along the width direction, at least one low-swelling-cell row in which all of the bonded portions on the both side edges thereof aligned linearly in the front-back direction are the strong bonded port

Assignees

• Daio Seishi Kk

Inventors

• Manabe Sadanao
• Ochi Ryoichi
• Mori Yosuke
• Ono Yohei

Classifications

• A61F13/5323 Primary

  having absorbent material located in discrete regions, e.g. pockets · CPC title

• A61F13/533 Primary

  having discontinuous areas of compression · CPC title

• A61F2013/530489

  being randomly mixed in with other material · CPC title

• A61F2013/53051

  being only in particular parts or specially arranged · CPC title

• A61F2013/530591

  in granules or particles · CPC title