发明名称 Thermoplastic bag, bag pack and method of making the same
摘要 A method for forming a thermoplastic film handled bag comprising: forming a continuous collapsed thermoplastic tube having heat seal lines across the width of said tube at bag length intervals, longitudinally folding opposite sides of the heat sealed tube equally towards each other until they meet at a common center line, folding the structure once again in the same direction along said center line and removing eight film layers in one of the corner regions defined by a heat seal line and the spine of the common center line fold, the film removal yielding a bag mouth opening and single loop handles at near the opposite ends of said bag mouth opening. Interconnected bags can be formed into a roll pack or individually severed bags can be unitized into a bag pack.
申请公布号 US4840610(A) 申请公布日期 1989.06.20
申请号 US19880243968 申请日期 1988.09.14
申请人 MOBIL OIL CORPORATION 发明人 PISTNER, TIMOTHY W.
分类号 B65D33/00 主分类号 B65D33/00
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