发明名称 |
Tamper-evident closure for bag |
摘要 |
A pouch comprises two opposed webs having respective side and bottom portions sealed together thereby leaving an unsealed end whereat one of the opposed webs extends beyond the free edge of the other of the opposed webs to form a flap. The flap is foldable onto over an edge portion of the other web. An area of pressure sensitive adhesive, which is disposed on the flap, extends through a position for normal folding of the flap, so that the flap is foldable within the area covered by the adhesive to bring that latter into direct sealing contact at the flap fold. The flap is foldable along a rupturable portion which extends across the width of the flap. The relatively readily rupturable portion, which defines a fold line, comprises a perforated line of weakness or a scored line of weakness.
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申请公布号 |
US4468811(A) |
申请公布日期 |
1984.08.28 |
申请号 |
US19830498215 |
申请日期 |
1983.05.25 |
申请人 |
SMITH BROTHERS (WHITEHAVEN) LIMITED |
发明人 |
SHAW, PETER M.;DAHL, FRIEDHELM |
分类号 |
A61B19/02;B65D33/20;B65D75/58;(IPC1-7):B65D33/20;B65D30/08 |
主分类号 |
A61B19/02 |
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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