发明名称 |
Multi-layer bag open at one side |
摘要 |
In a composite bag consisting of a paper or plastics outer envelope of one or more plies and a plastics inner envelope, the latter is closed at the base by a weld seam, the inner envelope material being incorporated in a welded or stitched base closure seam for the outer envelope. A line of weakness in the inner envelope material is disposed between the weld seam of the inner envelope and the base closure seam of the outer envelope.
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申请公布号 |
US4065049(A) |
申请公布日期 |
1977.12.27 |
申请号 |
US19750639710 |
申请日期 |
1975.12.11 |
申请人 |
WINDMOLLER & HOLSCHER |
发明人 |
ACHELPOHL, FRITZ;SCHMEDDING, HERBERT |
分类号 |
B65D33/00;B31B39/00;B65D30/08;(IPC1-7):B65D33/02 |
主分类号 |
B65D33/00 |
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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