Leakproof zipper with slider

A - Human Necessities – 44 – B

Patent

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Details

A44B 19/16 (2006.01) A44B 19/32 (2006.01) B65D 33/25 (2006.01)

Patent

CA 2076635

A leakproof plastic reclosable fastener or zipper with slider (11) particularly suited for thermoplastic bags. The zipper is formed by reclosable interlocking rib and groove profile elements (17, 18) on respective strips and the strips each include profiled track structure (19, 20) extending along the length thereof parallel to the rib and groove elements (17, 18). A straddling slider (11) is positioned on the strips for closing or opening the reclosable fastener elements (17, 18). The slider (11) includes depending side walls (11b, 11c) for maintaining the track structure (19, 20) and the rib and groove elements (17, 18) therebetween. The slider (11) also includes separator structure inserted between the track structure (19, 20) but not the rib and groove elements (17, 18) to open the rib and groove elements (17, l8). The zipper structure is slit or notched locally at the end where the slider (11) goes when the zipper is closed, to allow the rib and groove elements (17, 18) to interlock fully making a leakproof closure.

Attache ou fermeture éclair anti-fuites en plastique refermable comportant une coulisse (11) particulièrement adaptée pour des sacs thermoplastiques. La fermeture éclair se compose d'éléments profilés à nervure et à rainure refermables s'interpénétrant (17, 18) situés sur des bandes respectives, lesdites bandes comprenant chacune une structure de voies profilées (19, 20) s'étendant sur sa longueur, parallèlement aux éléments de nervures et de rainures (17, 18). Une coulisse à chevauchement (11) est positionnée sur les bandes afin de fermer ou d'ouvrir les éléments d'attache refermables (17, 18). La coulisse (11) comprend des parois latérales pendantes (11b, 11c) destinées à maintenir la structure de voies (19, 20) et les éléments de nervures et de rainures (17, 18) entre elles. La coulisse (11) comprend également une structure de séparation insérée entre la structure de voies (19, 20) mais pas entre les éléments de nervures et de rainures (17, 18), afin d'ouvrir ces dernières (17, 18). La structure de fermeture éclair est fendue ou encochée localement au niveau de l'extrémité où va ladite coulisse (11) lorsque la fermeture éclair est fermée, afin de permettre aux éléments de nervures et de rainures (17, 18) de s'interpénétrer entièrement formant une fermeture antifuites.

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