Method to achieve easy-opening flexible packaging laminates...

B - Operations – Transporting – 32 – B

Patent

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B32B 3/26 (2006.01) B32B 7/12 (2006.01) B32B 27/06 (2006.01) B32B 27/08 (2006.01) B65D 65/40 (2006.01) B65D 75/58 (2006.01)

Patent

CA 2243979

A polymeric laminate for use in polymeric films, and packaging material and packages made therefrom, that is roughened or knurled to produce a series of nicks or cuts over substantially the entire surface area of the laminate, producing an easy-opening feature. The laminate may be a multilayer, polymeric structure that may comprise an oriented polypropylene, polyethylene terephthalate, or a biaxially oriented nylon. The packaging material of the invention may contain a sealant film, either a single layer or multilayer film, and may also comprise an intermediate layer of foil.

L'invention concerne un stratifié en polymère constituant à utiliser dans des films polymères, ainsi que des matériaux d'emballage et des articles d'emballage réalisés avec ces stratifiés. La surface de ce stratifié est rendue irrégulière ou cannelée, de sorte qu'une série d'encoches ou de coupures soient produites sur sensiblement toute la surface du stratifié, et qu'une ouverture facile soit assurée. Le stratifié peut être une structure polymère à couches multiples comprenant un polyéthylène téréphtalate ou un polypropylène orienté, ou encore un nylon orienté biaxialement. Le matériau d'emballage de l'invention peut comporter un film d'étanchéité, qui peut avoir une ou plusieurs couches, et une couche de feuille intermédiaire.

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