| 发明名称 |
REINFORCED WICKET HOLE DIRECTIONALLY TEAR PRONE |
| 摘要 |
<p>REINFORCED WICKET HOLE DIRECTIONALLY TEAR-PRONE A plastic film packaging bag is fabricated with directionally tear-prone wicket mounting holes having a hole edge reinforcing bead of plastic selectively thinner in the desired tearing direction formed by a hot gas stream directed through shaped templates holding the bag. S P E C I F I C A T I O N</p> |
| 申请公布号 |
CA1046726(A) |
申请公布日期 |
1979.01.23 |
| 申请号 |
CA19750219684 |
申请日期 |
1975.02.10 |
| 申请人 |
UNION CARBIDE CORPORATION |
发明人 |
ERICSON, ALVIN E. |
| 分类号 |
B29C67/00;B26F1/26;B29C45/00;B29C51/00;B29C61/00;B29D7/01;B29D99/00;B65B61/02;B65D33/14;(IPC1-7):29D7/00 |
主分类号 |
B29C67/00 |
| 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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