发明名称 |
METHOD AND APPARATUS FOR MAKING SKIRTLESS SEALS |
摘要 |
A machine and method for making bags is described and includes a web traveling from an input section to a rotary drum, to an output section. The rotary drum includes at least one seal bar, having a single sealing zone, and a weakening zone disposed within the single sealing zone. The single sealing zone may be a heated perforator, and may include a heating wire. The heating wire may be an NiCr wire stitched into the heater, and be disposed on a cap or on the seal bar. The weakening zone may create a line of weakness that is uniform or varies in intensity. The sealing zone may include temperature zones, cartridge heaters, cooling air, or heated air, or a source of ultrasonic, microwave or radiative energy. |
申请公布号 |
WO2009061472(A1) |
申请公布日期 |
2009.05.14 |
申请号 |
WO2008US12573 |
申请日期 |
2008.11.07 |
申请人 |
CMD CORPORATION;SELLE, PAUL, A.;PELLWITZ, GREGORY, T. |
发明人 |
SELLE, PAUL, A.;PELLWITZ, GREGORY, T. |
分类号 |
B65B61/10;B31B1/16 |
主分类号 |
B65B61/10 |
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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