| 摘要 |
PROBLEM TO BE SOLVED: To obtain a resin film excellent in transparency and sparkling by a method wherein a propylene-ethylene random copolymer, the ethylene content of which is specified and the melt flow rate of which is specified, is extruded from a T-die, the cylinder temperature of which is specified, and then cooled down with a cooling roll, the surface temperature of which is specified. SOLUTION: A propylene-ethylene random copolymer, the ethylene content of which is 3-4 wt.% and the melt flow rate of which is 0.5-5 g/10 min, is extruded from a T-die, the cylinder temperature of which is 190-230 deg.C and then cooled down with a cooling roll, the surface temperature of which is 40 deg.C or lower. Since this propylene-ethylene random copolymer is extruded from the T-die and the quenched with the cooling roll, the obtained propylene resin film has the haze value of at most 3% in terms of 40μm, gloss value of 80% or more and, in addition, is excellent in transparency and lustering properties and has a favorable sparkling feeling. |
