Ultra-thin absorbing sheet body, disposable absorbent article provided with ultra-thin absorbing sheet body and production device for ultra-thin absorbing sheet body
US6972011B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2001 |
| Grant date | Dec 6, 2005 |
| Priority date | — |
| Expiry date | Apr 14, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/4708
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In an ultra-thin absorbent sheet member 1a in which an absorbent polymer powder 3 is adhered to one surface of a first nonwoven fabric 2 by a hotmelt adhesive such that absorbent polymer powder present areas 2c and absorbent polymer powder absent areas 2a, 2b exist; the absorbent polymer powder absent areas are present at opposite widthwise ends (2a) of the ultra-thin absorbent sheet member and at least one position (2b) between the opposite ends; the absorbent polymer powder 3 is bonded to the first nonwoven fabric 2 by first hotmelt adhesive layers S1 formed on an upper side of the first nonwoven fabric 2 and on a lower side of the absorbent polymer powder 3 and a second hotmelt adhesive layer S2 formed to cover upper sides of the absorbent polymer powder present areas 2c and the absorbent polymer powder absent areas 2a, 2b; and the first hotmelt adhesive layer S1 and the second hotmelt adhesive layer S2 are both made of an aggregate of linear hotmelt adhesive pieces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.