Polyvinyl alcohol fibers, and nonwoven fabric comprising them
US7892992B2 · kind B2 · utility
69Cited by
6References
29Claims
0Family size
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Key dates
| Filing date | Mar 10, 2004 |
| Grant date | Feb 22, 2011 |
| Priority date | — |
| Expiry date | Nov 4, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/689
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Readily-fibrillable fibers of PVA polymer, having good chemical resistance, hydrophilicity, weather resistance and water resistance have a flattened cross-sectional profile and have a mean thickness D (μm) that satisfies the following formula (1):0.4≦D≦5 (1)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.