发明名称 Easy opening carton
摘要 An easy opening carton and blank for forming same made from a paperboard material comprising a laminate of a smooth cover sheet and an inner lining, or a unitary construction are provided. The generally rectangular carton has opposed front and back walls, opposed side walls and opposed top and bottom walls. A parallel array of perforation lines are disposed on one side wall adjacent the top wall in a configuration such as a V or a semi-circle to form an easy opening area. The parallel array of perforations includes a plurality of parallel lines of perforations having each perforation in alternating positions between adjacent lines of perforations. The parallel array of perforations defines a wide area of penetration which sufficiently weakens the inner paperboard lining to facilitate opening the carton. Inward pressure on the easy opening area will separate the area from the side walls and permit the top wall to be torn back to form a pour spout.
申请公布号 US4511043(A) 申请公布日期 1985.04.16
申请号 US19830533214 申请日期 1983.09.19
申请人 CHAMPION INTERNATIONAL CORPORATION 发明人 ROCCAFORTE, HARRY I.
分类号 B65D5/70;(IPC1-7):B65D5/72 主分类号 B65D5/70
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