| 发明名称 |
PROCEDIMENTO E DISPOSITIVO PER LA CHIUSURA DI SACCHI DI GRANDE FORMATO |
| 摘要 |
After filling, the open end of a thermoplastic sack is closed by gathering it into zig-zag folding (1) which is compressed between apertured jaws (3, 4). Heated needles (7) insertable through the jaw apertures (5) pierce the compressed zig-zag folding and cause the individual folds to be welded to each other adjacent the piercings to secure the closure against springing open after the jaws (3, 4) are removed. <IMAGE> |
| 申请公布号 |
IT1123438(B) |
申请公布日期 |
1986.04.30 |
| 申请号 |
IT19790026226 |
申请日期 |
1979.10.03 |
| 申请人 |
WINDMOLLER & HOLSCHER |
发明人 |
OELRICH HERMANN;TETENBORG KONRAD;SCHMIDT HORST;HUWELMANN HELMUT |
| 分类号 |
B31B29/60;B29C53/00;B29C53/02;B29C65/00;B29C65/02;B29C65/22;B29C65/74;B65B51/10;B65D33/16 |
主分类号 |
B31B29/60 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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