发明名称 |
Perforating plastic film - by localised melting in the areas - of the required holes |
摘要 |
A fusing matrix is heated to the melting point temp. of the film and brought into contact with the film in the areas of the required holes whilst the rest of the film is cooled.
|
申请公布号 |
DE2027373(A1) |
申请公布日期 |
1971.12.16 |
申请号 |
DE19702027373 |
申请日期 |
1970.06.04 |
申请人 |
DOHMEIER & STROTHOTTE KG |
发明人 |
|
分类号 |
B26F1/24;(IPC1-7):29C17/10 |
主分类号 |
B26F1/24 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|