Transparent fibrous sheets and process for making
US4271227A · kind A · utility
12Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1979 |
| Grant date | Jun 2, 1981 |
| Priority date | — |
| Expiry date | Apr 26, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2779
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A transparent, non-stratified, three dimensional resin reinforced fibrous sheet and the process for its preparation is disclosed. A fibrous sheet is impregnated or coated with one or more tri or higher functional monomers that can be polymerized in-situ to form three dimensional polymer resins, in close contact with the fibrous material of the sheet. A transparentized fibrous sheet results which is resistant to water and alcohols, highly and evenly translucent and useful as tracing media vellum as well as a translucent base for sensitizing with reprographic coatings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.