发明名称 TAMPER-EVIDENT SEALING SYSTEM FOR ENVELOPE AND METHOD OF MAKING SAME
摘要 A tamper-evident seal for a plastic envelope with a pocket and closing flap having first adhesive sealing means for sealing the flap to the envelope and a second, tamper-evident sealing means adhering to the end of and extending beyond the end of the flap which also adheres to the envelope after the flap is closed and sealed.
申请公布号 CA1334955(C) 申请公布日期 1995.03.28
申请号 CA19890612729 申请日期 1989.09.25
申请人 MAKOWKA, KENNETH R. 发明人 MAKOWKA, KENNETH R.
分类号 B31B19/90;B65D27/30 主分类号 B31B19/90
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