Process for impregnating
US4772493A · kind A · utility
6Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1987 |
| Grant date | Sep 20, 1988 |
| Priority date | — |
| Expiry date | Nov 27, 2007 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/52
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for impregnating a continuous sheet of glass fibre web, paper, carbon fibre, cloth etc., which comprises feeding the sheet continuously into a closed vessel filled to a suitable height with a polymer solution, immersing the sheet under the surface of polymer solution while causing solvent boiling to occur and solvent vapor bubbles to flow out of the sheet, whereby bubbles of gas, such as air held or absorbed in the sheet during the immersion, are automatically removed from the sheet and then withdrawing the sheet from the vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.