公开(公告)号：EP4154854A1

公开(公告)日：2023-03-29

申请号：EP21834071.9

申请日：2021-06-22

申请人： Unicharm Corporation

发明人： ONISHI, Kazuaki

IPC分类号： A61F13/53 ,  A61F13/532 ,  A61F13/533 ,  A61F13/537

摘要： Provided is an absorbent article which can suppress an increase in thickness while maintaining absorption performance even if repeatedly absorbing liquids. An absorbent article 1 comprises an absorption core 9A containing highly-absorbent polymer particles the absorption core 9A being made of a skin-side layer 6A on the side of a skin-facing surface and a non-skin-side layer 8 on the side of a non-skin-facing surface. The skin-side layer 6A includes a plurality of trenches 18 extending along the longitudinal direction and penetrating in the thickness direction and a plurality of base portions 20A extending along the longitudinal direction. The trenches 18 include main trenches 19 extending in the longitudinal direction and sub trenches 21 that are present at predetermined intervals in a direction intersecting the main trenches 19 and communicate with the main trenches via base ends. The non-skin-side layer 8 includes trench-corresponding sections 22, 26 and base portion-corresponding sections 24 at locations overlapping with the trenches 18 and the base portions 20A in the thickness direction. A first average density of the highly-absorbent polymer particles contained in the trench-corresponding sections 22, 26 and the base portion-corresponding sections 24 is lower than a second average density of the highly-absorbent polymer particles contained in the base portions 20A.

公开(公告)号：EP3482731A1

公开(公告)日：2019-05-15

申请号：EP17823876.2

申请日：2017-05-22

申请人： Unicharm Corporation

发明人： ONISHI, Kazuaki

IPC分类号： A61F13/536 ,  A61F13/49 ,  A61F13/53 ,  A61F13/534 ,  A61F13/535

摘要： The present disclosure provides an absorbent article that has an excellent ability to diffuse bodily fluid, an excellent rate of absorption, and an excellent ability to prevent the fluid from returning even after repeatedly absorbing bodily fluid. This absorbent article is provided with an absorbent core (9) comprising superabsorbent polymer particles. The absorbent core (9) comprises a first layer (6) on the non-skin facing side and a second layer (8) on the skin facing side. The first layer (6) is provided with: groove parts (18) including a main groove part (19) that extends along the longitudinal direction L and passes therethrough in the thickness direction T; and base parts (20) extending along the longitudinal direction L. The main groove parts (19) and the base parts (20) alternately extend in the lateral direction W. The second layer (8) is provided with main groove part corresponding parts (22) and base part corresponding parts (24) at positions overlapping the main groove parts (19) and the base parts (20) in the thickness direction T. The superabsorbent polymer particles (32) in the base parts (20) and the main groove corresponding parts (22) have a smaller average density than the superabsorbent polymer particles (32) in the base part corresponding parts (24).

公开(公告)号：EP4014938A1

公开(公告)日：2022-06-22

申请号：EP20872101.9

申请日：2020-06-11

申请人： Unicharm Corporation

发明人： ONISHI, Kazuaki ,  TSUKUDA, Atsushi ,  TADA, Hiroaki

IPC分类号： A61F13/532 ,  A61F13/533

摘要： This absorbent article improves absorption speed and liquid return suppression in a case where a bodily fluid is repeated absorbed. The absorbent article (1) is provided with an absorbent core (9) that includes highly absorbent polymer particles. The absorbent core comprises a first layer (6) on a non-skin-facing side and a second layer (8) on a skin-facing side. The first layer is provided with: a plurality of groove sections (18) that include a plurality of main groove sections (19) that extend in a longitudinal direction and penetrate in a thickness direction; and a plurality of base sections (20) that extend in the longitudinal direction. The main groove sections and the base sections extend in alternation in a transverse direction. The base sections each comprise a base section inner section (36) that is adjacent to the non-skin-facing side of the second layer and a base section outer section (34) that is adjacent to the non-skin-facing side of the base section inner section. The mean density of the highly absorbent polymer particles contained in the base section outer section is lower than the mean density of the highly absorbent polymer particles contained in the base section inner section.

公开(公告)号：EP4223266A1

公开(公告)日：2023-08-09

申请号：EP21875726.8

申请日：2021-09-29

申请人： Unicharm Corporation

发明人： ONISHI, Kazuaki

IPC分类号： A61F13/15 ,  A61F13/53

摘要： The present invention provides an absorbent article which is capable of maintaining a higher level liquid absorbency even when repeatedly absorbing a bodily fluid such as urine and a method of manufacturing a core wrap sheet. An absorbent 7A which has a skin-facing surface 15 and a non-skin-facing surface 17 and which comprises an absorbent core 9A and a core wrap sheet 11A disposed on the skin-facing surface 15 side and/or on the non-skin-facing surface 17 side. The core wrap sheet 11A comprises an inner layer 16A and an outer layer 18A. The inner layer 16A contains 50 mass% or more of a cellulose fiber and comprises a core-facing surface 21 being in contact with the absorbent core 9A a non-core facing surface 23 and a plurality of open holes 27. The outer layer 18A contains 50 mass% or more of a thermoplastic synthetic fiber and comprises a first surface 29 being in contact with the non-core facing surface 23 a second surface 31 a plurality of first grooves 33 which are formed on the first surface 29 and recessed in the thickness direction and a plurality of second grooves 35 which are formed on the second surface 31 and recessed in the thickness direction.

公开(公告)号：EP3318237B1

公开(公告)日：2019-05-22

申请号：EP16817595.8

申请日：2016-05-23

申请人： Unicharm Corporation

发明人： ONISHI, Kazuaki

IPC分类号： A61F13/533 ,  A61F13/53 ,  A61F13/536 ,  A61F13/539 ,  A61F13/534

公开(公告)号：EP2525757A1

公开(公告)日：2012-11-28

申请号：EP12730353.5

申请日：2012-03-29

申请人： Unicharm Corporation

发明人： SASAYAMA, Kenichi ,  ICHIKAWA, Makoto ,  KATSURAGAWA, Kunihiko ,  ONISHI, Kazuaki ,  NAKASHITA, Masashi

IPC分类号： A61F13/49 ,  A61F13/53

CPC分类号： A61F13/5323 ,  A61F2013/530481 ,  A61F2013/530554 ,  A61L15/42 ,  A61L15/58 ,  A61L15/60

摘要： Water-absorbent articles improved to alleviate an uncomfortable feeling due to water-soluble matter contained in superabsorbent polymer particles are provided. In an absorbent article (1) adapted to be used, for example, as an absorbent structure in a disposable diaper, superabsorbent polymer particles (4) are interposed between opposed surfaces (2a, 3a) of a pair of sheet materials (2, 3) overlapping each other. The superabsorbent polymer particles (4) used in this invention has a water-soluble matter content percentage corresponding to 15% or less of a mass of the superabsorbent polymer particles (4) as measured by immersing them in 0.9% physiological saline.

公开(公告)号：EP3738563A1

公开(公告)日：2020-11-18

申请号：EP18899041.0

申请日：2018-12-20

申请人： Unicharm Corporation

发明人： ONISHI, Kazuaki

IPC分类号： A61F13/535 ,  A61F13/53 ,  A61F13/534 ,  A61F13/537

摘要： The purpose of the present disclosure is to provide an absorbent article in which bodily fluid easily flows in the longitudinal direction of an absorbent core and leakage at a crotch region is suppressed. An absorbent article according to the present disclosure has the following configuration. An absorbent article (1) is characterized in that: an absorbent core (9) includes a first layer (17) and a second layer (19) that are adjacent to each other in the thickness direction (T); the first layer (17) has, in a front-body part (FP), (i) a groove (25) extending in the longitudinal direction (L), penetrating in the thickness direction (T), and having a terminal end (27) at a rear (RD) position and (ii) a base (29) disposed adjacent to the rear (RD) position of the groove (25) with the terminal end (27) therebetween; the second layer (19) has a groove corresponding part (33) and a base corresponding part (35) at positions overlapping the groove (25) and the base (29) respectively in the thickness direction (T); and the average density of highly absorbent polymer particles (23) contained in the base (29) and the average density of the highly absorbent polymer particles (23) contained in the base corresponding part (35) are higher than the average density of the highly absorbent polymer particles (23) contained in the groove corresponding part (33).

公开(公告)号：EP3318237A1

公开(公告)日：2018-05-09

申请号：EP16817595.8

申请日：2016-05-23

申请人： Unicharm Corporation

发明人： ONISHI, Kazuaki

IPC分类号： A61F13/533 ,  A61F13/53

CPC分类号： A61F13/539 ,  A61F13/536 ,  A61F2013/5349

摘要： The present invention provides an absorbent article which can exhibit an excellent fit as well as excellent rewettability and an excellent sense of comfortable wear both before and after an excretory fluid such as urine is absorbed into the absorbent article. In the absorbent article (1) according to the present invention, an absorbent material (7) comprises an absorbent core (9) that has a first surface and a second surface and core wraps (11, 11') that covers the absorbent core (9), wherein the absorbent core (9) is provided with length-direction grooves (19), the length-direction grooves (19) are recessed below the second surface and extend in the length direction, each of the length-direction grooves (19) has a bottom part (20), the length-direction grooves (19) have a smaller basis weight than the average basis weight of the absorbent core (9), the length-direction grooves (19) contain multiple though-holes (24) which penetrate from the first surface through the second surface, and the core wrap (11') is bonded to the bottom parts (20) of the length-direction grooves (19).

摘要翻译： 本发明提供一种吸收性物品，其在排泄液如尿液吸收到吸收性物品中之前和之后都能表现出优异的贴合性以及优异的再润湿性和优异的舒适感。 在根据本发明的吸收性物品（1）中，吸收性材料（7）包括具有第一表面和第二表面的吸收芯（9）以及覆盖吸收芯（11,11'）的芯包层（11,11' 其特征在于，所述吸收性芯（9）具备长度方向槽（19），所述长度方向槽（19）在所述第二面的下方凹陷，并沿所述长度方向延伸，所述长度方向槽 （19）具有底部（20），长度方向槽（19）的单位面积重量小于吸收芯（9）的平均单位面积重量，长度方向槽（19）包含多个通孔 24），其从第一表面穿过第二表面，并且芯包裹体（11'）结合到长度方向凹槽（19）的底部部分（20）。