Liquid-absorbent sheet and method for producing the same
US7717894B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 11, 2006 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Jan 15, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/530547
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A liquid-absorbent sheet containing: a liquid-absorbent surface material mainly containing a pulp; a liquid-absorbent nonwoven fabric; a liquid-absorbent rear material mainly containing a pulp; and a super absorbent polymer; wherein the super absorbent polymer is disposed at least between the liquid-absorbent surface material and the liquid-absorbent nonwoven fabric as an A layer and between the liquid-absorbent nonwoven fabric and the liquid-absorbent rear material as a B layer, the super absorbent polymer being contained in a total amount of 200 to 400 g/m2, which is allocated in the A layer at 30 to 50% by mass, the liquid-absorbent nonwoven fabric layer at 0 to 40% by mass, and the B layer at 30 to 70% by mass, and the content ratio of the super absorbent polymer in the A layer is less than or equal to the content ratio of the super absorbent polymer in the B layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.