发明名称 |
Method and apparatus for pre-tearing strings of air-filled packing materials and the like |
摘要 |
Method and apparatus which facilitate the tearing of packing materials and the like into desired lengths by pre-tearing them along the rows of perforations which are provided for that purpose. In the disclosed embodiments, a packing material having inflated chambers separated by rows of perforations is fed at a predetermined speed in a direction generally perpendicular to the rows and periodically pulled upon rather abruptly to produce a partial tearing of the material along the rows of perforations.
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申请公布号 |
US7343723(B2) |
申请公布日期 |
2008.03.18 |
申请号 |
US20040766754 |
申请日期 |
2004.01.27 |
申请人 |
FREE-FLOW PACKAGING INTERNATIONAL, INC. |
发明人 |
PERKINS ANDREW |
分类号 |
B65B31/00;B31D5/00 |
主分类号 |
B65B31/00 |
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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