Zipper-like closure strip for a bag and bag including it

摘要

#CMT# #/CMT# The strip has two support films provided with a longitudinal sealing set (22) such as complementary sealing bands, hook and loop bands, and self-adhesive bands. Each film has a longitudinal lower part (212) extending in an underlying manner to a longitudinal upper part (211) of the film. Inner faces (211a, 212a) of the upper and lower parts are made of materials having different melting temperatures. The melting temperature of the constitutive material of the inner face of the upper part is lower than the melting temperature of the constitutive material of the inner face of the lower part. #CMT# : #/CMT# An independent claim is also included for a sachet comprising an opening. #CMT#USE : #/CMT# Sealing strip for a sachet (claimed). #CMT#ADVANTAGE : #/CMT# The melting temperature of the constitutive material of the inner face of the upper part is lower than the melting temperature of the constitutive material of the inner face of the lower part, thus improving the quality of joining the films on the opening of the sachet, and eliminating the need for placing complex devices so as to avoid the application of joining jaws on the entire surface of the support films. The upper parts of the support films are joined to stiffen an upper portion of the sealing strip so as to facilitate gripping of the upper portion of the sealing strip, thus allowing a user to easily open the sachet by holding the sachet with one hand and by pulling over the upper portion of the sealing strip with the other hand. The strip has aesthetic appearance. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a cross-sectional view of a sealing strip. 22 : Longitudinal sealing set 211 : Longitudinal upper part 211a : Inner face of longitudinal upper part 212 : Longitudinal lower part 212a : Inner face of longitudinal lower part.