B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 27/32 (2006.01) B29C 47/06 (2006.01) B29C 47/88 (2006.01)
Patent
CA 2405173
A method of making a high gloss multilayered polyolefin film (12), characterized by the absence of polyvinyl chloride, by coextruding the layers onto a polished casting roll (112) having a mirror finish. The multilayered polyolefin film (12) produced by this method has a high gloss finish and a distinctness of image in the cross direction in the range of 1.3:1 to 1.0:1, and has a 20 degree gloss in the machine direction and the cross direction of at least 40.
Cette invention a trait à la fabrication d'un film polyoléfinique multicouche à forte brillance (12) se caractérisant par l'absence de polychlorure de vinyle. Dans le cadre de ce procédé, on co-extrude les couches sur un rouleau enducteur poli (112) ayant un poli optique. Le film polyoléfinique multicouche (12) produit grâce à ce procédé a un fini lustré élevé et fait montre d'une haute netteté d'image dans le sens travers comprise entre 1.3:1 et 1.0:1 ainsi que d'une valeur de brillance de vingt degrés dans le sens machine et d'au moins quarante degrés dans le sens travers.
Dicarlo Luigi V.
Hannington Michael
Mientus Bernard S.
Avery Dennison Corporation
Gowling Lafleur Henderson Llp
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