Bag and method of making the same

Details Bag and method of making the same Bag and method of making the same

B - Operations, Transporting

65

D

B65D 30/10 (2006.01) B31B 1/74 (2006.01) B65D 33/00 (2006.01) B65D 33/28 (2006.01) B65F 1/06 (2006.01)

Patent

CA 2741037

The plastic bag may include flexible thermoplastic sidewalls that have a pattern imparted onto them. The wrinkle pattern may be a plurality of linear ribs formed into the sidewall that may be arranged adjacent and parallel to one another. To impart the pattern to the sidewall, a thermoplastic web used to make the sidewall may be directed between a first cylindrical roller and a second cylindrical roller, each of which may have a plurality of spaced ridges extending about their peripheries. When the web is directed between the first and second rollers, the meshing of the ridges may form ribs into the web.

Linvention concerne un sac flexible pouvant comporter des parois latérales thermoplastiques flexibles présentant un motif appliqué sur lesdites parois. Le motif ridé peut être une pluralité de nervures linéaires formées à lintérieur de la paroi latérale et pouvant être disposées de manière adjacente et parallèle les unes aux autres. Pour appliquer le motif sur la paroi latérale, une bande thermoplastique utilisée pour fabriquer la paroi latérale peut être dirigée entre un premier rouleau cylindrique et un second rouleau cylindrique, dont chacun peut présenter une pluralité de nervures espacées sétendant autour de leurs périphéries. Lorsque la bande est dirigée entre les premier et second rouleaux, lengrènement des arêtes peut former des nervures à lintérieur de la bande.

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