发明名称 METHOD OF MANUFACTURING BAGS
摘要 The present invention provides a method of manufacturing bags from a strip-like bag material of a thermoplastic synthetic resin and is characterized by having the heat-sealing of the bag material and the severing of the heat-sealed portions performed in two separate steps to thereby secure the smooth transfer of the bag material so that the bag manufacturing efficiency may be enhanced.
申请公布号 US3675542(A) 申请公布日期 1972.07.11
申请号 USD3675542 申请日期 1970.07.01
申请人 YASUHIRO TORIGOE;TAIYO SHOKAI CO. LTD. 发明人 YASUHIRO TORIGOE
分类号 B31B23/00;(IPC1-7):B31B49/04 主分类号 B31B23/00
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