| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminate for vacuum heat insulation material which has no defective quality such as defective appearance due to "heat shrinkage wrinkle" and "slack" and defective oxygen gas barrier property, and has a heat insulation performance being by no means inferior as compared to an ethylene-vinyl alcohol copolymer film layer, and to provide a vacuum heat insulation material using the laminate for vacuum heat insulation material at a low cost.SOLUTION: The laminate for vacuum heat insulation material which is used for vacuum heat insulation material made by enclosing heat insulation core material with jacketing wrapping material made of a laminated body and degassing an internal part enclosed by the jacketing wrapping material to make a vacuum state is produced by laminating a base layer, a water vapor gas barrier layer, an oxygen gas barrier layer and a heat adhesive resin layer in order. Therein, the oxygen gas barrier layer is made of a three-layer co-extrusion film (nylon/ethylene-vinyl alcohol copolymer/nylon) which is subjected to aluminum deposition on one-side surface thereof and is biaxially stretched. |
