RESIN COMPOSITION AND STRETCHED FILM OBTAINED BY USING THE SAME

摘要

A film which is formed by stretching a polyethylene based resin, wherein (a-i) when Em and Et represent the values of Elmendorf tear strength in the MD and TD directions, respectively, as measured based on ASTM D1922, Em and Et satisfy the following formulae (1), (2) and (3): 20 <= Em[N/m] <= 3000 (1) 20 <= Et[N/m] <= 3000 (2) 0.1 <= (Em/Et) <= 3 (3), (a-ii) the tensile initial modulus of elasticity (TM) in the MD direction satisfies the following formula (4): 300 <= TM[Mpa] <= 10000 (4), (a-iii) the film has a thickness in the range of 5 to 150 mum, and the film is excellent in the uniformity with respect to stretching. The above polyethylene based film is excellent in the Elmendorf tear strength and can be uniformly stretched.