Dai Nippon Printing Co., Ltd.

Taku Muneda

Masahiro Imai

Yuka Tachikawa

Makoto Mizoshiri

The present disclosure provides an outer packing material for vacuum insulation material comprising a thermally weldable film; a resin layer including at least one of an ethylene-vinyl alcohol copolymer and polyvinyl alcohol; and a gas barrier film including a resin base material, and an inorganic film placed on at least one main surface of the resin base material, wherein the resin layer is placed between the thermally weldable film and the gas barrier film, a water vapor permeability of the outer packing material for vacuum insulation material is 0.03 g/(m·day) or less, and a metal layer is not placed in the outer packing material for vacuum insulation material.

Outer packing material for vacuum insulation material, vacuum insulation material, and article provided with vacuum insulation material

An outer packing material for vacuum insulation material including a thermally weldable film and a gas barrier film; wherein the gas barrier film includes a base material and a metal aluminum film formed on one surface of the base material; and the metal aluminum film satisfies the below formula (1) and formula (2):1.0*10&#x2264;()/&#x2264;3.5*10&#x2003;&#x2003;(1)()/&#x2265;3.8*10&#x2003;&#x2003;(2).

An outer packing material for vacuum insulation material by having a thermally weldable film and a gas barrier film in this order; wherein the product of the tensile elasticity of the outer packing material for vacuum insulation material and the cube of a thickness of the outer packing material for vacuum insulation material is 3.0 MPa&#xb7;mmor less; and push-in elasticity of the thermally weldable film is 0.8 GPa or more.

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Tokyo-to, Japan

Taku Muneda