B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 15/08 (2006.01) B29C 47/06 (2006.01) B29C 55/12 (2006.01) B32B 27/32 (2006.01)
Patent
CA 2256981
A biaxially oriented polypropylene film to be metallized, comprising a surface layer made of a polypropylene resin with the endothermic main peak by crystal fusion in a range of 155 to 163°C and with a heat of crystal fusion of 20 to 90 J/g, being laminated layer at least on one side of the base layer made of isotactic polypropylene; and the wetting tension of the surface layer, being 33 to 55 mN/m. A metallized biaxially oriented polypropylene film, comprising a thin metallic film, being laminated on the surface layer of said biaxially oriented polypropylene film to be metallized. A laminate obtained by using said metallized biaxially oriented polypropylene film. Said biaxially oriented polypropylene film to be metallized can provide a metallized film with excellent gloss while the adhesiveness between the metallic film and the base material of the film is improved. Said metallized biaxially oriented polypropylene film is excellent in gas barrier properties and also excellent in stiffness and heat resistance, hence excellent in the gas barrier properties after lamination, being also excellent in the adhesiveness and heat sealability of the back side, and yet free from the disadvantageous pick-off.
Nagai Itsuo
Tanaka Shigeru
Smart & Biggar
Toray Industries Inc.
Toray Industries Inc.
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