发明名称 |
Laminator of thermo:welding coatings for plastic identification cards |
摘要 |
The process comprises internal coating with polyolefin of high molecular weight with adhesion through hot extrusion. To increase the effective weld surface, a corona electric discharge is applied to the contact surface produced by the extrusion operation. - This technique promotes microcratering of the polyolefin film.
|
申请公布号 |
ES8305633(A1) |
申请公布日期 |
1983.07.16 |
申请号 |
ES20030005093 |
申请日期 |
1982.02.03 |
申请人 |
COBIAN SCHROEDER FRANCISCO |
发明人 |
|
分类号 |
B32B;B42D;B42D15/02;(IPC1-7):42D15/02;32B31/00 |
主分类号 |
B32B |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|