Laminated polyolefin films and methods of production thereof...

Details Laminated polyolefin films and methods of production thereof... Laminated polyolefin films and methods of production thereof...

B - Operations, Transporting

32

B

B32B 27/32 (2006.01) B32B 27/18 (2006.01) C08K 5/103 (2006.01) C08K 5/42 (2006.01) C08L 23/02 (2006.01)

Patent

CA 2431436

A laminated polyolefin film with two or more layers is produced by coextrusion. An outer-layer forming material is prepared by with olefin resin containing specified kinds of non-ionic surfactant and salt of organic sulfonic acid in a specified amount and at a specified ratio. In the production of the laminated polyolefin film by coextrusion, this outer-layer forming material is used to form either one or both of the outer layers if the laminated film is to have three or more layers and to form only one of the outer layers if the laminated film is to have only two layers.

Divulgation d'un film de polyoléfine stratifié constitué de plusieurs couches, produit par coextrusion. Un matériau pour la formation de la couche extérieure est préparé à partir d'une résine oléfinique contenant des types spécifiques d'agent tensio-actif non ioniques et un sel d'acide sulfonique organique en quantité et en proportion spécifiées. Lors de la production par coextrusion du film de polyoléfine stratifié, ledit matériau de formation de la couche extérieure est utilisé pour former l'une ou les deux couches extérieures si le film stratifié doit avoir trois ou plus de trois couches, et est utilisé une seule des couches extérieures si le film stratifié doit avoir seulement deux couches.

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