Composite plastics sheet having conductive surface
US4478903A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 18, 1982 |
| Grant date | Oct 23, 1984 |
| Priority date | — |
| Expiry date | May 18, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite plastics sheet made of a polystyrene base resin or an ABS base resin is provided. The composite plastics sheet has a conductive covering layer laminated by co-extrusion on the face of the substrate sheet. The material for the conductive covering layer is made of a polystyrene base resin or an ABS base resin and mixed with a conductive carbon black material, such as furnace black or channel black, in an amount such that the flow index at the extrusion step thereof at 200.degree. C. and under a loading of 5 kg is not lower than 0.1 g/10 min and such that the surface specific resistance of the resultant mixture is not more than 10.sup.10 ohms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.