LAMINATED UNIAXIALLY STRETCHED FILM AND ITS PRODUCTION

摘要

PROBLEM TO BE SOLVED: To obtain a laminated uniaxially stretched film excellent in the tearing properties in the direction right-angled to a stretching direction and also excellent in tensile breaking strength or heat resistance. SOLUTION: In a uniaxially stretched film constituted of at least a layer comprising a crystalline olefinic polymer and a layer comprising an ethylenic polymer, the crystal c-axis orientation function Fεof the ethylenic polymer calculated by infrared dichoric ratio measurement is set to 2.0×10<-1> or less.