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Vacuum thermal baffle packaging film and preparation method thereof

A vacuum heat insulation board and packaging film technology, applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of affecting the heat insulation effect of finished VIP boards, affecting the appearance of VIP boards, and difficult production processes, etc., to achieve good physical Good mechanical properties, peel strength, and good aging resistance

Active Publication Date: 2010-09-29
HUANGSHAN NOVEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the high barrier property requirements of the VIP board, the packaging film itself is relatively thick, the production process is difficult, the material selection is not good, and the surface flatness is not high, wrinkles and other phenomena are prone to occur, which not only affects the appearance of the VIP board, but also affects the appearance of the VIP board. Affect the heat insulation effect of the finished VIP board

Method used

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  • Vacuum thermal baffle packaging film and preparation method thereof
  • Vacuum thermal baffle packaging film and preparation method thereof
  • Vacuum thermal baffle packaging film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Vacuum insulation panel packaging films such as figure 1 Shown: its production process is as follows:

[0038] a. Printing process: Printing on biaxially stretched nylon film at 20-30°C;

[0039] b. The preparation process of composite polyethylene: each layer of polyethylene resin is placed in its own barrel and extruded according to a specific addition ratio to form a composite polyethylene film; image 3 As shown: the composite polyethylene layer is sequentially composed of a composite outer layer 51, a core layer 52, and a heat-sealed inner layer 53 from outside to inside;

[0040] c. The first dry compounding process: compound the biaxially stretched nylon film and the polyethylene terephthalate film on which the pattern text has been printed through a dry compound machine, and then compound the biaxially stretched nylon film / Dry lamination of polyethylene terephthalate film and aluminum foil to form biaxially stretched nylon / polyethylene terephthalate / aluminum...

Embodiment 2

[0057] Except in b, the preparation process of composite polyethylene.

[0058] Composite outer layer: 45% m-LLDPE DOW5100 (manufactured by Dow Chemical Company);

[0059] 45% MDPE 2038.68G (manufactured by Dow Chemical Company);

[0060] 10% LDPE150BW (produced by Exxon Mobil);

[0061] Core layer: 60% HDPE HTA108 (produced by Exxon Mobil);

[0062] 40% m-LLDPE 1018FA (produced by Exxon Mobil);

[0063] Layer C: 30% LDPE 150BW (produced by Exxon Mobil);

[0064] 70% m-LLDPE PL1881G (manufactured by Dow Chemical Company);

[0065] The composite polyethylene made is the same as Example 1 except for ±5% limit deviation.

Embodiment 3

[0067] Except in b, the preparation process of composite polyethylene.

[0068] Composite outer layer: 30% m-LLDPE DOW5100 (manufactured by Dow Chemical Company);

[0069] 50% MDPE 2038.68G (manufactured by Dow Chemical Company);

[0070] 20% LDPE150BW (produced by Exxon Mobil);

[0071] Core layer: 50% HDPE HTA108 (produced by Exxon Mobil);

[0072] 50% m-LLDPE 1018FA (produced by Exxon Mobil);

[0073] Layer C: 40% LDPE 150BW (produced by Exxon Mobil);

[0074] 60% m-LLDPE PL1881G (manufactured by Dow Chemical Company);

[0075] Made composite polyethylene ± 5% limit deviation; the rest is the same as embodiment 1.

[0076] The main technical index of embodiment 1-3 is as follows:

[0077]

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Abstract

The invention discloses a vacuum thermal baffle packaging film and a preparation method thereof. The vacuum thermal baffle packaging film comprises a biaxially oriented nylon layer, a polyethylene glycol terephthalate layer, an aluminum foil layer, a biaxially oriented nylon layer and a composite polyethylene layer sequentially from inside to outside. Compared with the prior art, the vacuum thermal baffle packaging film has the characteristics of smooth appearance of bag bodies (+ / -5 percent of limit deviation), no phenomena of wrinkles, crystal points, PE coke buttons and the like, high barrier properties of packaging bags and good vacuumizing effect, peel strength, temperature tolerance and anti-aging effect.

Description

technical field [0001] The invention belongs to a packaging film and a preparation method thereof, in particular to a packaging film used for a vacuum heat insulation board and a preparation method thereof. Background technique [0002] Vacuum insulation panel (VIP panel) is a kind of vacuum insulation material. The VIP board is mainly composed of three parts: the heat insulation material of the core, the gas adsorption material and the closed air barrier film, that is, the vacuum insulation board packaging film. It can effectively avoid air convection heat transfer, so the thermal conductivity is greatly reduced, less than 0.005w / m·k (watts per meter Kelvin), and it is environmentally friendly and energy-efficient. It is currently the most advanced high-efficiency thermal insulation material in the world. Due to the high barrier property requirements of the VIP board, the packaging film itself is relatively thick, the production process is difficult, the material selection...

Claims

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Application Information

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IPC IPC(8): B65D65/40B32B15/08B32B27/08B32B37/02
Inventor 胡继超吴志刚潘健
Owner HUANGSHAN NOVEL
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