Method of forming side seams for zippered bags or packages

Details Method of forming side seams for zippered bags or packages Method of forming side seams for zippered bags or packages

B - Operations, Transporting

29

C

B29C 65/02 (2006.01) B29C 65/00 (2006.01) B31B 1/64 (2006.01) B31B 19/90 (2006.01) B65B 61/18 (2006.01) B65B 9/20 (2006.01)

Patent

CA 2119541

A method for manufacturing reclosable plastic bags or packages, wherein sections of zipper profiles are pre-softened at intervals equal in length to the width of the bags or packages to be manufactured. The pre-softening enables the zipper profiles to be fused together and completely flattened when a seal bar clamps thereacross to form a side seal area transverse to the zipper.

Cette invention concerne une méthode de fabrication de sacs ou emballages refermables en plastique dont les parties de fermeture profilées sont pré-amollies à intervalles égaux à la largeur des sacs ou emballages à fabriquer. Ce pré-amollissement permet de souder ensemble les profils de fermeture à glissière et de les aplatir complètement lorsque la barre de scellement s'abat en travers pour former un joint étanche latéral perpendiculaire au profil de fermeture à glissière.

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