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 hi

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

Example Embodiment

[0036] Example 1:

[0037] Vacuum insulation board packaging film, such as figure 1 Shown: Its production process is as follows:

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

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

[0040] c. The first dry laminating process: the biaxially oriented nylon film and polyethylene terephthalate film that have been printed with patterns are combined by a dry laminating machine, and then the composite biaxially oriented nylon film / Polyethylene terephthalate film and aluminum foil are dry composited to form a biaxially stretched nylon / polyethylene tereph...

Example Embodiment

[0056] Example 2:

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

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

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

[0060] 10% LDPE150BW (produced by ExxonMobil);

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

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

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

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

[0065] Except for the ±5% limit deviation of the produced composite polyethylene, the rest is the same as in Example 1.

Example Embodiment

[0066] Example 3:

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

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

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

[0070] 20% LDPE150BW (produced by ExxonMobil);

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

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

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

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

[0075] The made composite polyethylene has a ±5% limit deviation; the rest is the same as in Example 1.

[0076] The main technical indicators of Examples 1-3 are as follows:

[0077]

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PUM

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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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