Method for making a multilayer polyester film having a low...

Details Method for making a multilayer polyester film having a low... Method for making a multilayer polyester film having a low...

B - Operations, Transporting

29

C

B29C 71/02 (2006.01) B29C 47/06 (2006.01) B32B 27/36 (2006.01)

Patent

CA 2246447

A method for making a multilayer polyester film with a low coefficient of friction and slippery surface (comprising at least one terephthalic acid polyester layer) is provided. The film is heated until the terephthalic acid polyester has substantially crystallized and afterwards it can be stretched.

Cette invention concerne un procédé de fabrication d'un film polyester multicouche ayant un faible coefficient de frottement et une surface glissante (comportant au moins une couche de polyester d'acide téréphtalique). On chauffe ledit film jusqu'à ce que le polyester d'acide téréphtalique ait sensiblement cristallisé, après quoi il est possible de l'étirer.

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