| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polyester resin molded material, stretched and molded material, film, etc., eliminating defects caused by using a polyester resin as a raw material, excellent in transparency, mechanical strength and heat resistance, having a good molding property and suitably utilized for a bottle, film, etc. SOLUTION: This resin molded material is obtained by mixing two kinds of the same or different kinds of polyester resins having >=0.2 and <=1.2 intrinsic viscosities, and >=0.1 and <=1.0 difference in the intrinsic viscosities, and melt- molding the mixture. It is desirable that at least one kind of the polyester resin is a polyethylene-2,6-naphthalate and to mix >=10 wt.% and <=70 wt.% polyester resin having a lower intrinsic viscosity between the above polyester resins. |
