发明名称 Flexible package, and method and apparatus for manufacturing same
摘要 An easy-open pack is formed by (a) pre-cutting a corner of a film panel which, in the finished pack, forms one panel to be sealed against another panel around the periphery of a product article to close the pack, and (b) carrying out the sealing operation while holding the tab formed by said pre-cut corner displaced away from contact with the other film panel, preferably by folding the tab back on itself, more preferably while tack sealing it in said folded configuration.
申请公布号 US4410089(A) 申请公布日期 1983.10.18
申请号 US19810313511 申请日期 1981.10.21
申请人 W. R. GRACE & CO., CRYOVAC DIVISION 发明人 BORTOLANI, ERMANNO
分类号 B65D77/30;B65B31/02;B65B61/02;B65B61/18;B65D75/30;B65D75/58;B65D75/64;(IPC1-7):B65B61/18;B65D73/00 主分类号 B65D77/30
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