Water-degradable paper sheet, and tube for a paper roll consisting of such a sheet
US8758564B2 · kind B2 · utility
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10References
3Claims
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Key dates
| Filing date | Dec 16, 2009 |
| Grant date | Jun 24, 2014 |
| Priority date | — |
| Expiry date | Dec 16, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1307
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A water-degradable paper sheet has a basis weight of 80 to 400 g/m2 and is dry-formed from paper fibers bound together by a water-soluble binder including starch, the amount of binder in the sheet being 30 to 70%. Additionally, a tube is formed by a cylinder having a wall that includes at least one dry-formed paper sheet including paper fibers bound together by a water-soluble binder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.