Method of providing shaped polymeric articles with improved receptivity to organic coatings
US4828871A · kind A · utility
6Cited by
15References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1987 |
| Grant date | May 9, 1989 |
| Priority date | — |
| Expiry date | Nov 23, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05D3/0486
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The receptivity of shaped polymer articles (e.g., self-supporting films of polypropylene) to subsequently applied organic coatings is enhanced by exposure to an electrical discharge in the presence of a chlorocarbon or chlorofluorocarbon gas, thereby providing an extremely thin chlorine-containing surface layer in which the Cl:C ratio is inversely related to the distance from the face of the layer. Preferred embodiments of the invention include tape products in which the primed surface of the backing is coated with a pressure-sensitive adhesive or a low adhesion backsize.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.