发明名称 Thermoplastic bag structure
摘要 A thermoplastic bag structure and method for making and packaging thermoplastic bags such that their tops are easily identified and the bags are easily opened. The method for producing these bags begins with cutting a flattened thermoplastic tube into two portions. At least one of the two portions is then collapsed to form a sheet of material having a pair of thermoplastic layers, a straight folded bottom edge and a pair of top edges, at least one of which has a skewed-cut. Bag side structures are formed in the sheet of material at about bag-width distances apart. The bags are then folded a predetermined number of times, in a direction transverse to the bag side structures, so that the skewed-cut top edge(s) of each of the bags remains exposed.
申请公布号 US5967663(A) 申请公布日期 1999.10.19
申请号 US19970918555 申请日期 1997.08.22
申请人 TENNECO PACKAGING INC. 发明人 VAQUERO, EDWARD A.;BELIAS, WILLIAM P.
分类号 B31B23/00;(IPC1-7):B65D30/20 主分类号 B31B23/00
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