发明名称 |
Apparatus for forming bridges in tamper indicating closures |
摘要 |
A tamper indicating closure comprising a base wall and a peripheral skirt having an internal thread adapted to engage the threads of a container wherein a tamper indicating band is provided on the skirt by a plurality of circumferentially spaced bridges. The band includes portions adapted to engage an annular bead on the container. The bridges are formed by using a primary knife having an interrupted cutting edge to produce a circumferential score in the side wall of the closure leaving spaced connectors or bridges followed by using a secondary knife having a continuous cutting edge to provide a continuous external score line and an accurately dimensional radial thickness of the bridges. In a preferred method and apparatus, the closures engage the successive primary and secondary knives and are moved such that the closures roll relative to the knives.
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申请公布号 |
US5564319(A) |
申请公布日期 |
1996.10.15 |
申请号 |
US19940367511 |
申请日期 |
1994.12.30 |
申请人 |
OWENS-ILLINOIS CLOSURE INC. |
发明人 |
KOWAL, TIMOTHY B. |
分类号 |
B26D9/00;B26F1/18;B26F1/20;B65D41/34;B65D55/02;(IPC1-7):B26F1/18 |
主分类号 |
B26D9/00 |
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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