Absorbent article having liquid-permeable second sheet
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61F-013/15
A61F-013/539
A61F-013/511
A61F-013/49
A61F-013/514
A61F-013/531
출원번호
US-0597582
(2015-01-15)
등록번호
US-9925095
(2018-03-27)
발명자
/ 주소
Hishikawa, Takuya
출원인 / 주소
LIVEDO USA, INC.
대리인 / 주소
Westerman, Hattori, Daniels & Adrian, LLP
인용정보
피인용 횟수 :
0인용 특허 :
4
초록▼
An absorbent article has an absorbing core and a liquid-permeable second sheet disposed on the absorbing core. The absorbing core includes a liquid-holding material and a liquid-permeable core-wrapping sheet. The core-wrapping sheet covers the liquid-holding material, but a portion of a top-side sur
An absorbent article has an absorbing core and a liquid-permeable second sheet disposed on the absorbing core. The absorbing core includes a liquid-holding material and a liquid-permeable core-wrapping sheet. The core-wrapping sheet covers the liquid-holding material, but a portion of a top-side surface of the liquid-holding material is exposed. The second sheet contacts the liquid-holding material at the exposed portion. The second sheet is placed in direct contact with the cellulose fibers of the liquid-holding material, and liquid permeates from the second sheet into the liquid-holding material. Also, deformation of the liquid-holding material is prevented by the hydrophilic core-wrapping sheet covering the liquid-holding material.
대표청구항▼
1. An absorbent article, comprising: an absorbing core comprising a liquid-holding material and a liquid-permeable core-wrapping sheet; anda liquid-permeable second sheet disposed on the absorbing core,wherein the core-wrapping sheet covers the liquid-holding material at a bottom-side surface, side
1. An absorbent article, comprising: an absorbing core comprising a liquid-holding material and a liquid-permeable core-wrapping sheet; anda liquid-permeable second sheet disposed on the absorbing core,wherein the core-wrapping sheet covers the liquid-holding material at a bottom-side surface, side surfaces, and a portion of a top-side surface,the liquid-holding material of the absorbing core is exposed at an exposed portion on the top-side surface, andthe second sheet contacts the liquid-holding material at the exposed portion,wherein the liquid-permeable second sheet and the liquid-holding material are intermittently bonded to each other with a hot-melt adhesive, andwherein the liquid-permeable core-wrapping sheet is formed of long-fibered non-woven cloth, and a hydrophilic agent is applied to the liquid-permeable core-wrapping sheet, the hydrophilic agent being capable of being washed away by water when water flows through the core-wrapping sheet into the liquid-holding material. 2. The absorbent article according to claim 1, wherein the exposed portion is positioned in a central area with respect to the width direction. 3. The absorbent article according to claim 1, the core-wrapping sheet is formed of a single piece. 4. The absorbent article according to claim 1, wherein the liquid-permeable second sheet and the liquid-permeable core-wrapping sheet are intermittently bonded to each other with an adhesive. 5. The absorbent article according to claim 1, wherein the liquid-holding material has a hourglass shape. 6. The absorbent article according to claim 1, wherein the second sheet is disposed throughout the length of the absorbing core. 7. The absorbent article according to claim 1, wherein the width of the second-sheet is smaller than the central width of the absorbing core. 8. The absorbent article according to claim 1, wherein the second sheet is formed of air-through non-woven cloth. 9. The absorbent article according to claim 1, further comprising a liquid-permeable top sheet disposed on the liquid-permeable second sheet. 10. The absorbent article according to claim 9, wherein the liquid-permeable top sheet has extending portions extending beyond a width of the liquid-holding material, and the extending portions form flaps. 11. The absorbent article according to claim 9, wherein the absorbent article comprises no flap on either side with respect to the width direction of the liquid-permeable top sheet. 12. The absorbent article according to claim 9, further comprising flaps on both sides with respect to the width direction of the top sheet such that liquid leakage is prevented. 13. The absorbent article according to claim 12, wherein the flaps are not elasticized. 14. The absorbent article according to claim 12, wherein the flaps are elasticized. 15. The absorbent article according to claim 1, further comprising a liquid-impermeable back sheet disposed under the absorbing core. 16. The absorbent article according to claim 15, wherein the back sheet is folded back at extending positions beyond a width of the liquid-holding material on both sides with respect to the width direction, and wherein the back sheet beyond the width of the liquid-holding material forms flaps. 17. The absorbent article according to claim 16, further comprising a liquid-permeable top sheet disposed on the liquid-permeable second sheet, wherein the top sheet is extending to the extending positions, and wherein the top sheet beyond the width of the liquid-holding material also forms the flaps. 18. The absorbent article according to claim 15, wherein the back sheet is made of a vapor permeable material. 19. The absorbent article according to claim 1, wherein the liquid-holding material comprises cellulose fibers. 20. The absorbent article according to claim 1, wherein the liquid-holding material comprises liquid-absorbing polymer. 21. The absorbent article according to claim 20, wherein the liquid-absorbing polymer is mixed with cellulose fibers. 22. The absorbent article according to claim 1, wherein the liquid-holding material comprises adhesive. 23. The absorbent article according to claim 1, wherein the absorbent article is a diaper, wherein the absorbent article further comprises a pull-on-shaped exterior cover, and the absorbing core is placed inside of the diaper exterior cover.
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이 특허에 인용된 특허 (4)
Bogdanski Michael Scott ; Feist Barry Robert ; Litchholt John Joseph ; Sanchez Liza Marie ; Schmidt Mattias,DEX, Absorbent comprising upper and lower gel layers.
DiPalma Joseph (Neenah WI) Stilp Timothy Scot (Appleton WI) Birtwell R. John (Hillden Shaw GB3), Thin absorbent article having wicking and crush resistant properties.
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