Pressure-sensitive adhesive and application thereof
US4433223A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1981 |
| Grant date | Feb 21, 1984 |
| Priority date | — |
| Expiry date | Aug 24, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/0278
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A conductive adhesive for use in membrane switch and printed circuit technologies consists essentially of a resin modified copolymer of butadiene and styrene and a conductive element. The conductive element is preferably a material such as acetylene black and is more than two percent and less than 40 percent by weight of the adhesive. The conductive adhesive may be used to secure the membrane and substrate of a membrane-type switch thereby providing a conductive path between the membrane and substrate. The adhesive may also be used to attach a membrane switch tail to an associated printed circuit board or the like, again with the conductive properties of the adhesive providing a current path as well as the conventional adhesion between the two parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.