Method for making a bag

Details Method for making a bag Method for making a bag

B - Operations, Transporting

31

B

B31B 19/90 (2006.01) B31B 19/36 (2006.01) B31B 23/00 (2006.01)

Patent

CA 2591749

A method for making bags from flexible plastic film comprises the steps of feeding a sheet of plastic film; making at least one indented pleated portion in the film and, in particular, a first and a second indented pleated portion (916, 918), and e forming the film into a tubular shape. According to the method of the invention, means are provided for sealing the respective end (916~, 918~) of the pleated portion, said means being in the form of a respective sealing band (942).

Cette invention concerne un procédé de fabrication de sacs à partir d'un film plastique souple comprenant les étapes consistant: à utiliser une feuille de film plastique; à réaliser au moins une partie plissée gaufrée dans le film et, en particulier, une première et une deuxième partie plissée gaufrée (916, 918); et à profiler le film de façon qu'il se présente sous une forme tubulaire. Selon le procédé de cette invention, un élément est utilisé pour sceller l'extrémité correspondante (916', 918') de la partie plissée, lequel élément se présente sous la forme d'une bande de scellage correspondante (942).

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