Composite sheet material for magnetic and electronic shielding and product obtained therefrom
US4647714A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Dec 28, 1984 |
| Grant date | Mar 3, 1987 |
| Priority date | — |
| Expiry date | Dec 28, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12951
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Composite sheet material, used for shielding magnetism and electromagnetic waves, principally made of an electrodeposited iron foil, as the core, with a thickness of at least 10 .mu.m which is applied on either side surface thereof a plating layer with a respectively predetermined metal, and of, a covering layer which is formed of a suitable sheet-like material and which is to be laminated on at least one of the two plating layers through the medium of an adhesive layer. A variety of products utilizing this composite sheet material as an essential elements thereof which stretches over a wide field wherein magnetic and electronic shield is required, for example: magnetic-card holders; magnetic-card protection cases or boxes; envelopes and containers for keeping and transporting magnetic recording media; wallpapers for various special rooms, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.