ORIENTED FILM THAT IS REDUCED IN REFLECTION AND CAN BE BONDED WITH SUITABILITY FOR ENVELOPE WINDOW FILM

摘要

PURPOSE: To obtain a transparent bondable stretched polypropylene film having one reflection-reduced surface pretreated with corona or a flame to be made easily bondable. CONSTITUTION: A reflection-reduced layer consists of 5-60 wt.% of rubber or a maleic anhydride modified low density straight chain ethylene polymer, 5-15 wt.% of a copolymer or terpolymer made of propylene/ethylene/butylene and based on propylene and 25-90 wt.% of at least one kind of a polypropylene/ polyethylene block copolymer. A stretched film has surface gloss of a 60 gloss unit (DIN 67 530) or less and haze (ASTM D 1003) of 40% or less.