High-barrier paper-plastic composite packaging film

A paper-plastic composite and packaging film technology, applied in packaging, wrapping paper, transportation and packaging, etc., can solve the problems of moisture permeability and oxygen permeability parameters of paper-plastic composite packaging films, decrease in barrier properties and permeability of paper-plastic composite packaging films. The problems such as the increase of transient property can be minimized, and the tensile properties can be enhanced to avoid the reduction of barrier properties.

Active Publication Date: 2017-09-01
HUANGSHAN NOVEL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Paper-plastic composite packaging film is usually composed of plastic and paper. It is widely used in flexible packaging materials. However, due to the special surface of paper, it has a high friction coefficient on vertical packaging equipment, especially at the folded collar, resulting in paper The barrier property of the plastic composite packaging film is greatly reduced. Generally, the permeability of the paper plastic composite packaging film will increase by 3-5 times before and after packaging.
The existing paper-plastic composite packaging film

Method used

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  • High-barrier paper-plastic composite packaging film
  • High-barrier paper-plastic composite packaging film

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The layer thickness ratio of the corona layer, the intermediate layer and the heat-sealing layer is 3.2:20.5:6.3; the mass ratio of the terpolymerized polypropylene material one to the terpolymerized polypropylene material two is 0.9:1.1

Embodiment 2

[0031] The layer thickness ratio of the corona layer, the intermediate layer and the heat-sealing layer is 2.8:21.5:5.7; the mass ratio of the terpolymerized polypropylene material 1 to the terpolymerized polypropylene material 2 is 1.1:0.9.

Embodiment 3

[0033] The layer thickness ratio of the corona layer, the intermediate layer, and the heat-sealing layer is 3:21:6; the mass ratio of the ternary copolymerization polypropylene material 1 to the ternary copolymerization polypropylene material 2 is 1:1.

[0034] The following table 1 is the test comparison result of the performance of the high barrier paper-plastic composite packaging film obtained in the present invention and the performance of the traditional paper-plastic composite packaging film:

[0035]

[0036] From the results shown in the table above, it can be known that the paper-plastic composite packaging film of the present invention has significantly lower oxygen permeability and water permeability than the traditional paper-plastic composite packaging film, indicating that the barrier performance of the paper-plastic composite packaging film of the present invention has been greatly improved.

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Abstract

The invention relates to a high-barrier paper-plastic composite packaging film which comprises an aluminizing casting polypropylene film layer, wherein the aluminizing casting polypropylene film layer is compounded on a paper layer; the aluminizing casting polypropylene film layer comprises a corona layer, a middle layer and a thermal sealing layer which are compounded together; the surface of the corona layer is plated with an aluminum layer; the layer thickness ratio of the corona layer, the middle layer and the thermal sealing layer is (2.8-3.2):(20.5-21.5):(5.7-6.3); the corona layer comprises a cycloalkene copolymer; the middle layer comprises homo-polypropylene with a nucleating agent; the thermal sealing layer comprises a ternary polymerization co-polypropylene material I and a ternary polymerization co-polypropylene material II in a mass ratio of (0.9-1.1):(0.9-1.1). The high-barrier paper-plastic composite packaging film provided by the invention has high barrier performance, is capable of successfully solving the problem that the barrier property is degraded after a paper-plastic composite packaging film passes through packaging equipment, and is stable in barrier property and applicable to various filling packaging modes.

Description

technical field [0001] The invention belongs to the technical field of paper-plastic composite packaging film, and in particular relates to a high-barrier paper-plastic composite packaging film. Background technique [0002] Paper-plastic composite packaging film is usually composed of plastic and paper. It is widely used in flexible packaging materials. However, due to the special surface of paper, it has a high friction coefficient on vertical packaging equipment, especially at the folded collar, resulting in paper The barrier property of the plastic composite packaging film is greatly reduced. Generally, the permeability of the paper plastic composite packaging film will increase by 3-5 times before and after packaging. The existing paper-plastic composite packaging film mainly uses VMPET or aluminum foil as the barrier layer of the paper-plastic composite packaging film, but under the large friction of the packaging, the paper-plastic composite packaging film will appear...

Claims

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Application Information

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IPC IPC(8): B32B27/32B32B27/08B32B27/16B32B27/10B65D65/40B29D7/01B29C47/06B29C71/00
CPCB29C48/022B29C48/08B29C48/21B29C71/0081B29D7/01B29D2009/00B32B27/08B32B27/10B32B27/16B32B27/32B32B2307/54B32B2307/7244B32B2307/7246B65D65/40
Inventor 鲍祖本张和平吴旭峰汪学文王健
Owner HUANGSHAN NOVEL
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