Water-dispersible sheet
US11052694B2 · kind B2 · utility
1Cited by
5References
15Claims
0Family size
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Inventors
Key dates
| Filing date | Oct 23, 2017 |
| Grant date | Jul 6, 2021 |
| Priority date | — |
| Expiry date | Oct 23, 2037 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H27/004
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A water-dispersible sheet is described having suppressed time degradation of the tacky adhesiveness of the tacky adhesive layer, while maintaining water dispersibility. The base paper of the water-dispersible sheet has a multilayer structure, including an inner layer which is not in contact with a tacky adhesive layer and a surface layer which is in contact with the tacky adhesive layer. The layers are independently mixtures of papermaking fibers and an alkalized fibrous carboxymethyl cellulose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.