EXTERIOR MATERIAL FOR A VACUUM HEAT INSULATING MATERIAL

• Main Authors: SATO TOMOKO, OGAWARA KENJI
• Format: Patent
• Language: English; Japanese
• Published: 27.10.2014
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

PROBLEM TO BE SOLVED: To provide an exterior material for a vacuum heat insulating material having a high flexural resistance so as to be able to sustain, even if the vacuum heat insulating material is used over an extended period, a high vacuum state.SOLUTION: In an exterior material 1 for a vacuum heat insulating material consisting of a substrate layer 10, a barrier layer 20, and a sealant layer 30 in proper order from the outer side thereof, a laminate of a stretched polypropylene film 11 and a stretched nylon film 12 is used as the substrate layer, whereas a deposition film of a metal or metal oxide is used as the barrier layer. A laminate of an aluminum-deposited polyethylene terephthalate film 21 and an aluminum-deposited ethylene-vinyl alcohol copolymer film 22, in particular, is used as the barrier layer. 【課題】真空断熱材が長期間に渡って使用されも、高い真空状態を保持することのできるように、耐屈曲性の高い真空断熱材の外装材を提供する。【解決手段】外側から順に、基材層１０、バリヤ層２０、シーラント層３０からなる真空断熱材の外装材１であって、基材層に、延伸ポリプロピレンフィルム１１と延伸ナイロンフィルム１２を積層して用い、バリヤ層に、金属または金属酸化物の蒸着フィルムを用いた。特に、バリヤ層には、アルミ蒸着ポリエチレンテレフタレートフィルム２１とアルミ蒸着エチレン−ビニルアルコール共重合体フィルム２２を積層して用いた。【選択図】図１