| 摘要 |
PROBLEM TO BE SOLVED: To obtain a packaging stretch film excellent in the balance of the uniformity of film elongation and film rigidity and heat resistance, especially, lateral tear properties and cutting properties in automatic packaging. SOLUTION: In a uniaxially stretched film constituted of both outer layers and an intermediate layer, the intermediate layer is a layer containing a crystalline propylene polymer as one component and both outer layers are composed of at least one ethylenic copolymer selected from an ethylene/vinyl acetate copolymer, an ethylene/acrylic ester copolymer and an ethylene/methacrylic ester copolymer. The crystal c-axis orientation function Fεof the ethylenic copolymer calculated from infrared dichroic ratio measurement is 2.0×10<-1> or less. |
