Transfer coating process for manufacture of printing circuits
US3956041A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1974 |
| Grant date | May 11, 1976 |
| Priority date | — |
| Expiry date | Aug 23, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S428/901
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is provided a process for producing resin rich surfaces of desired and specified thickness and physical, chemical, electrical and/or optical properties involving the use of a transfer base material to move a viscous, liquid, hardenable composition after partial hardening into a non-tacky state into contact with the surface of a second, permanent base, completing the hardening of the composition into a resin-rich surface layer adhering to the second base and subsequently removing the transfer base therefrom. In specific embodiments, the permanent base itself can be hardenable and complete hardening is effected simultaneously; the surface layer can be an adhesive layer; and the surface layer can be catalytic throughout to electroless metal deposition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.