Method for welding polycarbonate by high frequency
US5435878A · kind A · utility
10Cited by
6References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1991 |
| Grant date | Jul 25, 1995 |
| Priority date | — |
| Expiry date | Apr 18, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2429/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for welding thermoweldable sheets of which at least one is made of polycarbonate. The method is characterized in that the sheets to be welded are separated from the metal electrodes (4,5) of the high frequency press by means of a glass plate (2,3). Application to the fabrication of high density magnetic cards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.