发明名称 |
Wiederverschliessbare Druckverschlussbänder mit Originalitätsicherungselement |
摘要 |
A plastic bag (30) having a reclosable plastic zipper (42) is provided with a tamper-evident, non-reclosable peel seal (40) formed by applying an adhesive (38) to a treated strip adjacent to the interlocking zipper (42). The treatment is preferably by corona discharge, which causes the adhesive used to provide the peel seal to preferentially adhere to the treated strip when the peel seal is broken. A method for manufacturing the reclosable plastic zipper includes the steps of extruding a zipper profile, treating a portion of its surface, preferably by corona discharge, applying an adhesive to the treated portion, slitting the profile lengthwise, and folding over one of the resulting sides of the zipper to interlock them with one another. <IMAGE> |
申请公布号 |
DE69431139(T2) |
申请公布日期 |
2003.04.10 |
申请号 |
DE1994631139T |
申请日期 |
1994.04.21 |
申请人 |
ILLINOIS TOOL WORKS INC., GLENVIEW |
发明人 |
RASKO, GEORGE;SHARE, LAWRENCE |
分类号 |
A44B19/16;B29C59/08;B29C59/10;B29C65/00;B29C65/48;B29C65/54;B29D5/10;B65D33/25;B65D33/34;B65D75/32;B65D75/36;B65D77/20;(IPC1-7):B65D33/25 |
主分类号 |
A44B19/16 |
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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