Importance

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Abstract

A leak resistant reclosable plastic closure structure with stable interlocking fastener strips particularly suited for resealable and reopenable plastic film pouches or other flexible containers. The closure comprises first and second extruded thermoplastic continuous fastener strips having longitudinally extending engagable profiles having flanges affixed along the opening walls of a pouch forming marginal portions thereon. The first strip profile having a resilient central arch sealing means flanked by outward locking shoulders and walls that join at right angles to flanges forming a gap spanned by said film completing the exterior of a cavity therein. The second strip profile comprising a base element having a flexible narrow section and an adjacent ridge cooperating sealing member flanked by right angle walls terminating with inward locking hooks, said section bends when said portions are pulled apart providing disengaging means that allows one wall to tilt outward spreading the hooks, thereby disengaging the hooks from the shoulders. Manually engaging the strips locks the hooks and shoulders together while the second strip ridge displaces the first strip central arch forming a preloaded sealing joint along the length of the closure, said joint and shoulders being in triangular relationship, said film spanning said gap restrains the first strip flanges from spreading apart.

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First Claim