发明名称 |
METHOD AND APPARATUS FOR MAKING SACKS WHICH ARE OPEN AT ONE END AND COMPRISE AN OUTER SACK OF WOVEN PLASTICS TAPE FABRIC |
摘要 |
Sacks are made from a web comprising a tube of stretched plastics tape fabric woven around a thermoplastic tubular film. The web is continuously fed to a storage device from which two-ply sack lengths are intermittently withdrawn and severed and provided with a stitched base seam. Each severing cut is made to extend through transverse strips of hot-melt adhesive which were applied to both sides of the fabric tube and cooled. After severing and prior to stitching through both plies, the inner ply is provided with a separate base seam by means of welding jaws. |
申请公布号 |
GB2033832(A) |
申请公布日期 |
1980.05.29 |
申请号 |
GB19790033809 |
申请日期 |
1979.09.28 |
申请人 |
WINDMOELLER & HOELSCHER |
发明人 |
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分类号 |
B31B39/60;B29C65/18;B29C65/52;B29C65/62;B29C65/74;B31B19/16;B31B23/00;B31B33/00;B31B39/00;B31B41/00;D06H5/00 |
主分类号 |
B31B39/60 |
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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