Process for applying a release coating to a wet nonwoven backing and article
US4973513A · kind A · utility
30Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 4, 1990 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Apr 4, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2754
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Release coated nonwoven sheet materials are provided through the process of (a) forming a web from fibers; (b) applying a water-based binder to the web; (c) applying a water-based release coating to one side of said web while the web is still wet from the application of the binder; and (d) drying said web. This process eliminates at least one heating step, with unexpected control of the migration of the release coating through the web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.