And a method of manufacturing the tubular biaxially stretched film of polyethylene-based

摘要

PROBLEM TO BE SOLVED: To obtain an ethylene-based resin tubular biaxially oriented film that has excellent transparency and see through feeling and prevents whitening.;SOLUTION: The polyethylene-based tubular biaxially oriented film comprises a polyethylene-based resin and an inorganic antiblocking agent master batch in which a resin for the master batch is an ethylene-α-olefin copolymer having 0.86-0.91 g/cm³ density. The polyethylene-based tubular biaxially oriented film has a three or more multilayer structure in which at least both surface layers are composed of a polyethylene-based resin and an inorganic anti-blocking agent master batch and the resin for the master batch is an ethylene-α-olefin copolymer having 0.86-0.91 g/cm³ density. The resin for the master batch is an ethylene-α-olefin copolymer having a melting calorie at ≤110°C of ≥90% total melting calorie in a melting curve by a differential scanning calorimeter.;COPYRIGHT: (C)2006,JPO&NCIPI