| 摘要 |
PURPOSE:To obtain the subject film composed of a polyester and inert particles, excellent in abrasion resistance and useful as a tape, etc., by making to adhere a thermoplastic resin having a second order transition temperature lower than that of the above-mentioned polyester to the surface of the above-mentioned particles and blending the resultant particles with the polyester. CONSTITUTION:An objective film mainly composed of a polyester such as polyethylene terephthalate and inert particles (e.g. talc; Average particle size is preferably 0.1-2.5mum and amount of addition is 0.01-1.0wt.% based on polyester). The above-mentioned particles contain one or more kinds of particles in which a thermoplastic resin (preferably in an amount of 0.01-2 weight ratio based on inert particle) having a glass transition temperature (Tg) lower than Tg of the above mentioned polyester is made to adhere to the surface. |
