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Blocking film with low heat bridge effect and vacuum heat insulation plate with blocking film

A technology of barrier film and barrier film, which is applied in the direction of coating, layered products, synthetic resin layered products, etc. It can solve the problems of low mechanical strength, easy transfer of aluminum plating, and affect the service life of vacuum insulation products, etc., to improve Thermal insulation performance, improve surface compactness, and avoid thermal bridge effect

Pending Publication Date: 2018-05-29
福建菲尔姆科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The starting point of this patent is to comprehensively apply aluminum foil and aluminized film to the barrier film of vacuum insulation panels, but this type of barrier film has disadvantages such as low mechanical strength, easy to tear and break, not only does not solve the problem of the adhesion of the aluminum film layer to the aluminized layer Poor, easy transfer of aluminum plating and other problems, but also introduce new problems, the thermal conductivity of aluminum foil is large, after the barrier film is heat-sealed, there are obvious problems of thermal bridge effect and metal boundary thermal effect, which makes the overall thermal conductivity of the vacuum insulation panel rise significantly. It affects the service life of vacuum thermal insulation products, so it does not fundamentally solve the shortcomings of aluminum foil and aluminized film

Method used

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  • Blocking film with low heat bridge effect and vacuum heat insulation plate with blocking film
  • Blocking film with low heat bridge effect and vacuum heat insulation plate with blocking film
  • Blocking film with low heat bridge effect and vacuum heat insulation plate with blocking film

Examples

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Embodiment 1

[0027] refer to figure 1 , a low thermal bridge effect barrier film made of Al-plated 2 o 3 A PET layer 1, a nylon layer 2, two layers of nano-barrier film layers 3, and a PE layer 4 are sequentially bonded by an adhesive.

[0028] The Al plating 2 o 3 PET layer 1 is the outermost waterproof layer, its oxygen permeability (23°C, 50% RH) ≤ 1cc / ㎡.day, water permeability (38°C, 90% RH) ≤ 1g / ㎡.day, has excellent Moisture barrier performance, and good chemical stability, has excellent cooking resistance, as the first line of barrier defense of the barrier film, at the same time, it plays a further protective role for the nano-barrier film layer 3 in the middle, so that the barrier film It can also maintain good barrier properties under high temperature and high humidity conditions.

[0029] In the Al-plated 2 o 3 Al plating of PET layer 1 2 o 3 The nylon layer 2 is compounded with an adhesive. The nylon layer 2 has good wear resistance and weather resistance, and plays a r...

Embodiment 2

[0038] refer to Figure 4 and Figure 5 , the difference between this embodiment and embodiment 1 is: a low thermal bridge effect barrier film, composed of F-containing modified PET layer 1', nylon layer 2, two layers of nano-barrier film layer 3', PE layer 4 through an adhesive Glue the composition in sequence.

[0039] The water permeability of 12μm PET (38°C, 90% RH) is about 30g / ㎡.day. If the PET is coated with fluorine-containing glue, the water permeability can be reduced to about 1g / ㎡.day. The F-containing modified PET layer 1' is used as the outermost waterproof layer, which reduces the overall water permeability of the composite membrane and at the same time ensures the service life of the barrier membrane in a humid environment. The thickness of the F-containing modified PET layer 1' is 10-20 μm.

[0040] The nano-barrier film layer 3' is successively an aluminum-plated base film 5, an undercoat layer 6, a barrier coating 7', and an aluminum-plated layer 8 from bo...

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Abstract

The invention discloses blocking film with a low heat bridge effect. The film is formed by bonding a waterproof layer, a protection layer and a blocking layer through an adhesive in sequence. The blocking layer is at least one layer of nano blocking thin film, and the nano blocking thin film is formed by laminating aluminizing base film, a bottom coating, a blocking coating and a nano plating layer in sequence. The invention provides a vacuum heat insulation plate which is formed in the mode that the blocking film with the low heat bridge effect wraps a cladding core material and a getter. Theprepared blocking film with the low heat bridge effect contains no aluminum foil, the edge heat bridge effect is low, the blocking performance is excellent, the durability under the warm and wet environment is good, the heat insulation and heat preservation performance and use durability of the vacuum heat insulation plate are greatly improved, and the vacuum heat insulation plate is effective under the high-temperate high-humidity environment for a long time.

Description

technical field [0001] The invention relates to a barrier film, in particular to a low thermal bridge effect barrier film and a vacuum heat insulation panel using the barrier film, belonging to the technical field of vacuum heat insulation panels. Background technique [0002] Vacuum insulation panel (referred to as VIP) is a new type of high-efficiency energy-saving heat insulation material that has developed rapidly in the world in recent years. It is mainly composed of barrier film, core material and getter. The core material is a low thermal conductivity insulation material, usually with flame Cotton, rock wool, glass fiber chopped strands, fumed silica, etc., the barrier film seals the core material and a small amount of getter in a vacuum and heat seals it to reduce heat conduction caused by air convection and moisture movement. The barrier film is used to ensure and maintain the internal vacuum, so that the entire insulation board is in a low thermal conductivity stat...

Claims

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Application Information

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IPC IPC(8): B32B27/02B32B27/12B32B27/36B32B27/34B32B27/08B32B27/32B32B27/06B32B7/12
CPCB32B5/02B32B7/12B32B27/08B32B27/12B32B27/32B32B27/34B32B27/36B32B2307/304B32B2262/0261B32B2255/10B32B2255/26B32B2307/73
Inventor 洪志发余锡友马向阳黄诚
Owner 福建菲尔姆科技有限公司
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