Process for fabricating a precursor sheet, particularly as book cover stock and product produced thereby
US5171627A · kind A · utility
6Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1990 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Sep 27, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31993
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a process for impregnating a sheet of wood-based unbleached virgin fibers comprised of 20 to 95 parts of hardwood fibers and 80 to 5 parts of softwood fibers with a saturant having a T.sub.G of from 5% to -50.degree. C. and comprising of from 5 to 50 percent by weight dry basis of a resulting dried sheet wherein the hardwood and softwood fibers are produced by chemical pulping of hardwoods and softwoods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.