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Packaging film for vacuum insulation panel and vacuum insulation panel

A technology of vacuum insulation panels and packaging films, which is applied in the direction of layered products, chemical instruments and methods, glass/slag layered products, etc., which can solve the problems of low thermal conductivity and increased thermal conductivity of aluminum-coated films that affect energy saving effects and product quality. Large and other problems, to achieve the effect of stable and controllable quality, long stretch life, and strong tear resistance

Active Publication Date: 2017-02-15
CHANGZHOU SANYOU DIOR INSULATION MATERIALS MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The deficiencies of the above-mentioned prior art are: the fibers are relatively thick and long in length (6-13 μm in diameter and 4-20 mm in length), and the fibers are relatively hard; In the actual production or use process, the fiber is easy to pierce the aluminized film; therefore, when producing VIP, the outsourcing sealing film generally does not use aluminized film; currently, aluminum foil composite film is used to produce VIP. To overcome the above problems; and this brings new problems, because the aluminum foil composite film contains pure aluminum layer (AL) and aluminum layer (VMPET), and the aluminum layer is relatively thick (generally about 7μm), resulting in VIP in In the actual application process, there will be a relatively serious thermal bridge effect, which will inevitably lead to an increase in the overall thermal conductivity of VIP, thereby affecting energy saving effects and product quality
[0010] The aluminized film contains an aluminized layer (VMPET) instead of a pure aluminum layer (AL), so the thermal conductivity of the aluminized film is much lower than that of the aluminum foil composite film

Method used

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  • Packaging film for vacuum insulation panel and vacuum insulation panel
  • Packaging film for vacuum insulation panel and vacuum insulation panel
  • Packaging film for vacuum insulation panel and vacuum insulation panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A packaging film for a vacuum heat insulation panel, which comprises: a protective layer, a gas barrier layer and a heat-welding layer, and the heat-sealing layer is an ETFE material layer with a thickness of 15-95 μm.

[0052] As the protective layer, a coextruded stretched film (hereinafter referred to as a coextruded stretched film) obtained by sequentially laminating a nylon-based resin, an ethylene-vinyl alcohol copolymer, and a nylon-based resin is used. This co-extruded stretched film does not use an adhesive, but by co-extruding, a flexible nylon-based resin is laminated on both sides of the gas-barrier ethylene-vinyl alcohol copolymer to give it flexibility. and gas barrier properties.

[0053] The thermally welded layer constituting the packaging film for vacuum heat insulating materials of the present invention has the highest air permeability in the packaging film for vacuum heat insulating materials, and the properties of the thermally welded layer have a g...

Embodiment 2

[0062] The vacuum insulation panel made of the film material of the above-mentioned embodiment 1, which includes a core material; as figure 2 , the core material includes an intermediate core material composed of 10 to 30 laminated glass fiber sheets 8 formed by a wet papermaking method (ie, a chopped strand core material); the upper and lower sides of the intermediate core material are completely covered with at least A layer of ultra-fine glass fiber cotton sheet 9; the fiber diameter in the ultra-fine glass fiber cotton sheet 9 is 1-4 μm and the length is 1-5 mm, and the thermal conductivity of the vacuum insulation panel made of the core material is ≤ 0.0025W / m.k.

[0063] As a variable embodiment, the intermediate core material is arranged in a bag made of the above-mentioned ultra-fine glass fiber cotton sheet, or the above-mentioned ultra-fine glass fiber cotton sheet 9 wraps the surrounding edges of the intermediate core material To avoid direct contact between the e...

Embodiment 3

[0079] On the basis of Example 2, the vacuum insulation panel core material of this example has the following modifications:

[0080] The intermediate core material is composed of a multi-layer glass fiber sheet formed by wet papermaking after uniform mixing of glass fiber chopped strands and glass fiber cotton, and at least one layer of single-layer glass fiber formed by dry-laid non-woven fabric technology. The mats are alternately stacked and formed, and then the superfine glass fiber cotton sheet is laid on the upper and lower sides of the middle core material. The thermal conductivity of the vacuum insulation panel made of the core material is ≤0.0025W / m.k.

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Abstract

The invention relates to a packaging membrane with large heatproof scope and flame retardation used for a vacuum insulation board and the vacuum insulation board by using the packaging membrane, and more specifically relates to the packaging membrane of a hot melt adhesive layer formed by employing ETFE. The packaging membrane comprises a protection layer, an air partition layer and the hot melt adhesive layer, the hot melt adhesive layer is an ETFE material layer, wherein the thickness is 15-95mum. The ETFE has little physical attribute influence to most chemical substances, has low permeability to common gas and steam, is in favor of increasing the isolation gas moisture performance of a membrane material, and is in favor of increasing comprehensive quality of VIP and prolonging its life span; ETFE flame retardation effect is better, and the flame resistance performance of the produced composite membrane is better.

Description

technical field [0001] The invention relates to a packaging film for a vacuum heat insulation panel and a vacuum heat insulation panel using the film, in particular to a packaging film using ETFE to form a thermal welding layer. The English name of ETFE is: ethylene-tetra-fluoro-ethylene, and the Chinese full name is: ethylene-tetrafluoroethylene copolymer, commonly known as: F-40. Background technique [0002] At present, vacuum insulation panels (VIP for short) have been widely used, for example, after being used for home appliance insulation, cold chain logistics, and building insulation, the available space of home appliances and buildings is reduced and the insulation life is short. [0003] At present, the packaging film used in the production of VIPs is generally a composite aluminum foil aluminized film or a high-barrier polyester aluminized film. [0004] Chinese patent application publication number CN102667298A discloses a packaging film for vacuum heat insulatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B17/02B32B17/10
Inventor 糜玥崎何晓茜
Owner CHANGZHOU SANYOU DIOR INSULATION MATERIALS MFG
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