Form retention film and its production method, lamination film tape, adhesion film tape, anisotropic conduction of heat film, and form retention fiber

摘要

It designates that as for this invention, as it is superior in form retention characteristic, tensile modulus of elasticity is high, at the same time offers the resistance vertical ripping characteristic satisfactory form retention film as purpose. Density are above 900kg/m3, the weight average molecular weight (Mw)/the Kazuhei equal molecular weight (Mn) 5 - 20 is includes the ethylene polymer which at least more backing material layer and the high polymer materials it is included, at least more soft layer and, to have, as for the ethylene polymer, the ethylene independent polymer or carbon count content of olefin unit 3 - 6 2 weight % is under to be the ethylene olefin copolymer which, fusion point Tm2 of the high polymer materials to be lower than fusion point Tm1 of the ethylene polymer, tensile modulus of elasticity to be 10 - 50GPa, due to 180 bending test the return angleIt is below the 65 , it makes the form retention film.