FILM FOR TIRE INNER-LINER AND PREPARATION METHOD THEREOF

摘要

PURPOSE: A film for tire innerliner is provided to obtain excellent sealability only by a thin thickness film, reduce the weight of a tire, improve the fuel efficiency of a vehicle, and have excellent moldability and mechanical properties. CONSTITUTION: A film for tire innerliner comprises a substrate film layer and an adhesive layer. The substrate film layer includes a polyamide-based resin with a relative viscosity of 3.0-3.5(sulfuric acid 96%); and a copolymer containing a polyamide-based segment and polyether-based segment. The adhesive layer includes a resorcinol-formalin-latex-based adhesive. The content of the polyether-based segment in the copolymer is 15-50wt% based on the total weight of the substrate film layer. The melt viscosity of the copolymer with regard to the melt viscosity of the polyamide-based resin at 260>= and a shearing rate of 1000s^-1 is 0.65-1.2. [Reference numerals] (1) Tread; (2) Shoulder; (3) Sidewall; (4) Cap ply; (5) Belt; (6) Body ply; (7) Innerliner; (8) Apex; (9) Bead;