发明名称 |
Overpressure relief valve for packaging container |
摘要 |
<p>A membrane type pressure relief valve for packaging containers. The valve comprises a plastic overlay (16, 32, 42) that is formed in a way that causes the center portion (24) of the valve to be pre-stressed when applied to a base sheet (12) or directly to a package wall. The forming of the overlay and its subsequent deformation after application to the base sheet or package wall causes the overlay to act as a mechanical assist to close the valve when valve oil does not fully force the valve closed. <IMAGE></p> |
申请公布号 |
EP1382545(A1) |
申请公布日期 |
2004.01.21 |
申请号 |
EP20030254385 |
申请日期 |
2003.07.10 |
申请人 |
SONOCO DEVELOPMENT, INC. |
发明人 |
CLOUGHERTY, KENAN J.;WESTPHAL, TEDDY M. |
分类号 |
B65D77/22;(IPC1-7):B65D77/22 |
主分类号 |
B65D77/22 |
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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