发明名称 |
Packaging bag with self-closeable outflow port, and method of manufacturing the packaging bag |
摘要 |
In the pouch of the present invention in which a pouring spout is formed by means of a heat-sealed part and a non-heat-sealed part by heat sealing plastic films, the inside surfaces of the films that form the portion of the boundary area between the heat-sealed part and non-heat-sealed part of the pouring spout passage on the side of the non-heat-sealed part contact each other so that no gaps are left in a closed state. Accordingly, even if the pouch is suspended with the pouring spout down following the opening of the pouring spout, the leakage of the contents such as a liquid or the like accommodated in the interior of the pouch from the pouring spout a small amount at a time can be securely prevented.
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申请公布号 |
US7866886(B2) |
申请公布日期 |
2011.01.11 |
申请号 |
US20050535814 |
申请日期 |
2005.05.20 |
申请人 |
TOYO SEIKAN KAISHA, LTD. |
发明人 |
KUROSAWA KAZUYUKI;MATSUDA NAOTO;KUNIHIRO ICHIRO |
分类号 |
B65D30/24;B29C65/00;B29C65/18;B31B19/26;B31B19/64;B31B19/84;B31B23/00;B31B37/00;B65D33/00;B65D33/36;B65D75/00;B65D75/56;B65D75/58 |
主分类号 |
B65D30/24 |
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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