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专利名称：Method and apparatus for registration of a
seal and perforation on a plastic bag
发明人：Stephen A. Saindon,Peter J. Gietman,
Jr.,Nicholas J. Nagel,Kevin O. Heindel
申请号：US08/427843申请日：19950426公开号：US05660674A公开日：19970826
摘要：A method and apparatus for registration of a seal and perforation on a plasticbag include a drum for forming a seal on a continuous plastic film with respect to aregistration mark on the film and a perforator/cutting station for forming a perforationon the film with respect to the location of the seal. This method and apparatus is used ina plastic bag making machine to produce bags of different lengths. A detector locatesthe registration mark printed on the film and the drum diameter may be adjusted toform the seal at a desired location on the film with respect to the registration mark. Aseal detecting station locates the seal and a controller adjusts the speed of theperforator/cutting station to properly locate the perforation with respect to the sealand to maintain a desired skirt length.
申请人：CMD CORPORATION
代理人：George R. Corrigan
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