发明名称 |
Composite film bags for packaging |
摘要 |
A composite film bag 1 for packaging comprises a composite film of a water-insoluble film 2 and a water-soluble polyvinyl alcohol film 3 which are adhered to one another to such an extent that the former film 2 can easily be peeled off from the latter film 3 and which are formed into a bag so that the water-insoluble film 2 serves as an outer layer of the bag and the water-soluble polyvinyl alcohol film 3 serves as an internal layer thereof. A powdery or liquid agricultural chemical agent 6 is packed in the composite film bag 1 and the opening of the bag is sealed. Upon practical use, the outer water-insoluble film 2 is peeled off to expose the internal film 3 and the internal film 3 as such, while containing the agricultural chemical agent 6, is introduced into water. Thus, the internal film is dissolved in water and in turn the content 6 thereof is released and accordingly dissolved in water. The composite film bag 1 is not broken at all even when it is exposed to a low temperature condition.
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申请公布号 |
US5691015(A) |
申请公布日期 |
1997.11.25 |
申请号 |
US19950580199 |
申请日期 |
1995.12.28 |
申请人 |
AICELLO CHEMICAL CO., LTD. |
发明人 |
TSUKAMOTO, YOSHINORI;SHIMIZU, MICHIO |
分类号 |
B32B27/08;B65D65/46;(IPC1-7):B65D65/40;B65D30/02 |
主分类号 |
B32B27/08 |
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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