Reclosable package having internal seal made of double-sided adhesive tape

摘要

Reclosable packages having a slider-actuated string zipper and a tamper-evident feature. In one aspect, the reclosable package comprises: a receptacle having a mouth and an interior volume; a string zipper installed in the mouth; a slider mounted to the string zipper; and a tamper-evident feature that blocks access to all or a portion of the interior volume. The tamper-evident feature is in the form of a strip of double-sided adhesive tape adhered to opposing walls of the receptacle to form a hermetic seal that partitions the interior volume of the receptacle. During manufacture of one embodiment, the adhesive tape with a release paper on one side is unwound from a reciprocating spool; the exposed side is pressed against a web of film; the release paper is removed; the web of film is folded; and then the folded-over portion of the web is pressed against the other side of the adhesive tape. A pair of zipper strips are also joined to the web in parallel with the adhesive tape.