Release paper and method of manufacture
US10731298B2 · kind B2 · utility
1Cited by
6References
13Claims
0Family size
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Inventors
Key dates
| Filing date | Jun 14, 2013 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Aug 21, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31993
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Release base papers with improved surface properties and more efficient manufacturing potential are made using cellulose nanofibrils (CNF) along with high freeness, less refined pulp. Release papers serve as the backing for common adhesive labels, for industrial film coatings, and also for certain food processing uses. The CNF may be added to the furnish and processed to paper, or the CNF may be added as a coating onto a partially dried web of paper. The CNF may optionally be combined with a starch and a starch crosslinker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.