Vacuum insulation panels with low edge thermal bridging

Abstract

The invention discloses a vacuum insulation panel with low edge thermal bridge effect and aims to reduce structure-caused thermal bridge effect and make the vacuum insulation panel lower in heat conductivity and more energy saving. The vacuum insulation panel comprises an aluminum foil bag made of an aluminum-plastic composite film; an insulation core is disposed in the aluminum foil bag; the aluminum foil bag is made into a sealed-periphery vacuum insulation panel body by packaging. The vacuum insulation panel is characterized in that overlap width of an aluminum foil or aluminized film in the aluminum-plastic composite film at the sealed edges is smaller than the width of the sealed edges, namely the aluminum foil or aluminized film in the aluminum-plastic composite film at the sealed edges retracts in. Overlap heat transmission area is reduced, so that thermal bridge effect caused by reduced insulation performance is reduced; meanwhile, the edges of the aluminum foil or aluminized film are covered with the plastic film, having poor heat conductivity, on the inner and outer surfaces of the aluminum foil or aluminized film and not exposed, direct heat exchange between the aluminum foil or aluminized film and the outside is prevented, and accordingly thermal insulation performance of the vacuum insulation panel is greatly improved and energy conservation effect is better.

Description

technical field [0001] The invention belongs to thermal insulation materials, in particular to a vacuum insulation panel with low edge heat bridge effect. Background technique [0002] Vacuum insulation panel (VIP board) is the abbreviation of Vacuum Insulation Panel in English. It is a kind of vacuum insulation material. It is composed of filling core material and vacuum protection surface layer. It can effectively avoid heat transfer caused by air convection, so The thermal conductivity can be greatly reduced, less than 0.003w / m.k, and it does not contain any ODS materials. It has the characteristics of environmental protection, high efficiency and energy saving, and is currently a relatively excellent high-efficiency thermal insulation material in the world. Vacuum insulation panels usually consist of an aluminum foil bag made of aluminum-plastic composite film and a heat insulation core material, wherein the heat insulation core material is placed in an aluminum foil bag...

AI Technical Summary

Problems solved by technology

In order to reduce this edge thermal bridge effect, many vacuum insulation panels use wrapping materials that do not contain aluminum foil, such as patent publication number: CN102720923A, a vacuum insulation panel and its preparation method, but for insulation panels that reflect heat radiation or have shielding requirements Generally speaking, the heat preservation and heat insulation performance of vacuum insulation panels without aluminum foil will be greatly reduced, and it will not be able to meet the shielding requirements.

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