CN203126053U

CN203126053U - Vacuum thermal insulating plate

Info

Publication number: CN203126053U
Application number: CN201320118290.0U
Authority: CN
Inventors: 中原文武; 宋渊; 河合宏; 羽田泰彦
Original assignee: Kuraray Co Ltd
Current assignee: Kuraray Co Ltd
Priority date: 2013-03-15
Filing date: 2013-03-15
Publication date: 2013-08-14
Anticipated expiration: 2023-03-15

Abstract

The utility model provides a vacuum thermal insulating plate, and in particular relates to a vacuum thermal insulating plate with excellent thermal insulating performance and high mechanical strength. The vacuum thermal insulating plate comprises a sealing layer and a core material, wherein the core material is a plate formed by glass fiber, pulverized silica or foam polyurethane and keeps vacuum inside; the sealing layer seals the core material; the sealing layer is a multilayer structural body; and an ethylene-vinyl alcohol copolymer layer is formed in the innermost layer of the multilayer structural body. The vacuum thermal insulating plate is excellent in vacuum thermal insulating performance and high in mechanical strength.

Description

Vacuum insulation panel

Technical field

The utility model relates to a kind of vacuum insulation panel, relates in particular to a kind of heat-proof quality excellence, the vacuum insulation panel that mechanical strength is high.

Background technology

Vacuum insulation panel is used in the refrigerator usually, increases effect of heat insulation between the outer surface by being arranged on refrigerator case chamber and the inner surface to improve refrigerating efficiency.

Particularly, vacuum insulation panel comprises core, sealant and getter, and wherein core has the plate that is formed by glass fibre, powder silica or polyurathamc, its inner vacuum that keeps; Sealant is used for sealing and covers core to keep the vacuum of core; Thereby getter by remove pass sealant flow into condition of high vacuum degree that gas in the sealant makes vacuum insulation panel just heat-proof quality keep the sufficiently long time.

Sealant is generally sandwich construction.Sealant in the past is made of the hot sealing layer that contacts with core, aluminium foil layer and the protective layer etc. that LLDPE of innermost layer etc. forms usually.

Cover core with two-layer sealant from both sides under vacuum condition, the hot sealing layer thawing with two-layer sealant combines then, thus core is isolated from the outside.

Yet, often because the barrier properties for gases of sealant is bad, the deterioration of thermal insulation performance of vacuum insulation panel As time goes on.

The utility model content

The purpose of this utility model is to provide a kind of heat-proof quality excellence, the vacuum insulation panel that mechanical strength is high.

For realizing this purpose, vacuum insulation panel of the present utility model, comprise sealant 13 and core 12, described core 12 is the plate that is formed by glass fibre, powder silica or polyurathamc, its inner vacuum that keeps, institute's sealant 13 is with described core 12 sealings, and wherein said sealant 13 is multilayer structure making, and the innermost layer of described multilayer structure making is evoh layer (evoh layer).

Further, described evoh layer is the evoh layer 4 that do not stretch.

Further, described multilayer structure making constitutes by four layers, comprises one deck do not stretch evoh layer 4, one deck aluminium foil 3, one deck aluminize PETG layer (aluminum plated PET layer) 2 and one deck aramid layer (ONY layer) 1.

Further, described one deck ONY layer 1 is the outermost layer of described multilayer structure making, and described one deck aluminum plated PET layer 2 is positioned at the outside of described one deck aluminium foil 3.

Wherein, the thickness of the described evoh layer 4 that do not stretch is 15-30 μ m, and the thickness of described aluminium foil 3 is 6-10 μ m, and the thickness of described aluminum plated PET layer 2 is 12 μ m, and the thickness of described ONY layer 1 is 10-30 μ m.

Wherein, the thickness of the described evoh layer 4 that do not stretch is 15 or 20 or 30 μ m, and the thickness of described aluminium foil 3 is 6.5 or 7 μ m, and the thickness of described aluminum plated PET layer 2 is 12 μ m, and the thickness of described ONY layer 1 is 15 or 25 μ m.

The sealant of vacuum insulation panel of the present utility model is the vacuum insulation panel with sandwich construction, and the sealant of this vacuum insulation panel can make its sandwich layer that wraps up keep sufficiently high vacuum, thus the heat transmission of avoiding cross-ventilation to cause effectively; Evoh layer in the sealant, aluminum plated PET layer and aluminium foil can both completely cut off gas effectively and make the heat-proof quality of vacuum insulation panel keep the sufficiently long time.And be used for the evoh layer of innermost layer, and not only can satisfy certain heat seal strength, to compare with PO simultaneously, the interior gas content of layer is little, the vacuum after can keeping effectively sealing.

Description of drawings

Fig. 1 is the structural representation of the utility model vacuum insulation panel.

Fig. 2 is the cross-sectional view of the vacuum insulation panel of an embodiment of the utility model.

Among the figure, 1 is the ONY layer, and 2 is the aluminum plated PET layer, and 3 is aluminium foil, and 4 are the evoh layer that do not stretch, and 11 is the part of sealant, and 12 is the core of vacuum insulation panel, and 13 is the sealant of vacuum insulation panel.

The specific embodiment

Followingly will describe vacuum insulation panel of the present utility model in detail.

As the polyamide that uses in the utility model (ONY), can exemplify polycaprolactam (nylon 6), nylon 11 (nylon 11), poly-lauramide (nylon 12) etc.Characteristics such as that polyamide has is tough and tensile, flexibility, adhesion are strong, wear-resisting, oil resistant, water-fast, antienzyme bacterium.

As the PETG of aluminizing (aluminum plated PET) that uses in the utility model, be to place vacuum to make aluminum evaporation or distillation the stretching pet layer, and separate out formation layer of aluminum film and obtain composite bed at stretching pet layer substrate surface.Aluminum plated PET has beautiful metal luster, good toughness and good folding resistance, and with respect to the preceding barrier raising to gas, steam, smell and light etc. of aluminizing.

Ethylene-vinyl alcohol copolymer (EVOH) has fabulous barrier and fabulous processability to gas, and the transparency, glossiness, mechanical strength, retractility, wearability, cold resistance and surface strength are all very excellent in addition.

As the evoh layer that uses in the utility model, normally the EVOH film that obtains by curtain coating extrusion moulding or downward-blowing water-cooling extrusion moulding can not carry out stretch processing.

In vacuum insulation panel of the present utility model, aluminum plated PET is preferably the biaxial tension PET that aluminizes.

In vacuum insulation panel of the present utility model, the coating of aluminum plated PET can outwardly also can be inwardly.

Vacuum insulation panel of the present utility model, its sealant are multilayer structure making, and the innermost layer of described multilayer structure making is evoh layer.Here, so-called intermediate layer refers to except the outermost layer of multilayer structure making and the layer the innermost layer.

Further, described evoh layer is the evoh layer that do not stretch.

Further, described multilayer structure making constitutes by four layers, comprises one deck aluminium foil, one deck do not stretch evoh layer, one deck aluminum plated PET layer and one deck ONY layer.

Further, described one deck ONY layer 1 is the outermost layer of described multilayer structure making, and described one deck aluminum plated PET layer is positioned at the outside of described one deck aluminium foil.

Wherein, the thickness of the described evoh layer that do not stretch is 15-30 μ m, and the thickness of described aluminium foil is 6-10 μ m, and the thickness of described aluminum plated PET layer is 12 μ m, and the thickness of described ONY layer is 10-30 μ m.Preferably, the thickness of the described evoh layer that do not stretch is 15 or 20 or 30 μ m, and the thickness of described aluminium foil is 6.5 or 7 μ m, and the thickness of described aluminum plated PET layer is 12 μ m, and the thickness of described ONY layer is 15 or 25 μ m.

Specify the example of vacuum insulation panel of the present utility model below in conjunction with accompanying drawing.

Fig. 1-2 illustrates the vacuum insulation panel of one of the utility model.

Among Fig. 1, the structural representation of vacuum insulation panel of the present utility model.Fig. 2 is the cross-sectional view of a part 11 of the sealant 13 of vacuum insulation panel shown in Figure 1, and among Fig. 2, sealant 13 is multilayer structure making, and this multilayer structure making comprises one deck aluminium foil, one deck do not stretch evoh layer, one deck aluminum plated PET layer and one deck ONY layer.Outermost layer to innermost layer by multilayer structure making is followed successively by ONY layer 1, aluminum plated PET layer 2, aluminium foil 3 and the evoh layer 4 that do not stretch.Wherein, the thickness of the evoh layer 4 that do not stretch is 15-30 μ m, and the thickness of aluminum plated PET layer 2 is 12 μ m, and the thickness of ONY layer 1 is 10-30 μ m, and the thickness of aluminium foil 3 is 6-10 μ m.

More than explanation is just illustrative for the utility model; and it is nonrestrictive; those of ordinary skills understand; under the situation that does not break away from the spirit and scope that claims limit; can make corresponding modification, variation or equivalent process, but all will fall in the protection domain of the present utility model.

Claims

1. A vacuum heat insulation panel, comprising a sealing layer (13) and a core material (12), the core material (12) is a plate formed by glass fiber, powdered silica or foamed polyurethane, and its interior is kept vacuum, so The sealing layer (13) seals the core material (12), characterized in that the sealing layer (13) is a multilayer structure, and the innermost layer is an ethylene-vinyl alcohol copolymer layer.

2. The vacuum insulation panel according to claim 1, characterized in that the ethylene-vinyl alcohol copolymer layer is an unstretched ethylene-vinyl alcohol copolymer layer (4).

3. The vacuum insulation panel according to claim 2, characterized in that the multilayer structure consists of four layers, including the layer of unstretched ethylene-vinyl alcohol copolymer (4), a layer of aluminum foil (3), a layer of aluminized polyethylene terephthalate (2) and a layer of polyamide (1).

4. The vacuum insulation panel according to claim 3, characterized in that, the polyamide layer (1) is the outermost layer of the multilayer structure, and the layer of aluminized polytene The ethylene glycol formate layer (2) is located outside the layer of aluminum foil (3).

5. The vacuum insulation panel according to claim 4, characterized in that, the thickness of the unstretched ethylene-vinyl alcohol copolymer layer (4) is 15-30 μm, and the thickness of the aluminum foil (3) is 6 -10 μm, the thickness of the aluminized polyethylene terephthalate layer (2) is 12 μm, and the thickness of the polyamide layer (1) is 10-30 μm.

6. The vacuum insulation panel according to claim 4, characterized in that, the thickness of the unstretched ethylene-vinyl alcohol copolymer layer (4) is 15 or 20 or 30 μm, and the thickness of the aluminum foil (3) is 6.5 or 7 μm, the thickness of the aluminized polyethylene terephthalate layer (2) is 12 μm, and the thickness of the polyamide layer (1) is 15 or 25 μm.