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High-extensibility packaging film, production method and external package

A production method and packaging film technology, applied in the field of packaging materials, can solve the problems of low tensile resistance, poor ductility, inedibility, etc., achieve the effects of reducing oxygen and moisture, improving ductility, and saving production costs

Pending Publication Date: 2019-02-22
FOSHAN NANHAI LIDA PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing pre-packaged foods are generally packaged with multi-layer adhesive film outer packaging with polyester film, nylon film and polyethylene film as the base layer. In order to prolong the shelf life of food, pre-packaged food manufacturers will use Inject an inert protective gas to reduce the oxygen content in the outer packaging and inhibit the growth of bacteria on the food, but the outer packaging of the above-mentioned multi-layer composite film has poor ductility and low tensile resistance. After being stretched, micropores will appear on the surface, so that the outer packaging cannot isolate the entry of external gas and liquid, and it is impossible to avoid the outflow of the protective gas in the outer packaging. As time goes by, the food in the outer packaging will be damaged due to oxidation, microorganisms Pollution, moisture absorption, mildew and other factors make it inedible. Therefore, how to provide a multi-layer composite film outer packaging with good ductility has become a technical problem that pre-packaged food manufacturers need to solve urgently

Method used

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  • High-extensibility packaging film, production method and external package
  • High-extensibility packaging film, production method and external package
  • High-extensibility packaging film, production method and external package

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] see Figure 1 to Figure 2 , the present embodiment provides the production method of high-stretch packaging film 1, comprises the following steps:

[0044] (1) Preparation materials: including the upper surface film material, the middle layer coil material and the heat seal layer film material; the upper surface film material is nylon or modified nylon film, and the thickness of the upper surface film material is 1-30 μm; heat sealing The film material of the layer is polypropylene or modified polypropylene film, and the thickness of the film material of the heat-sealing layer is 50-120 μm; 1-30μm;

[0045] (2) Pretreatment of the upper surface film material: corona treatment is carried out on the outer surface of the upper surface film 40, and the roll is harvested as an upper surface coil material for subsequent use;

[0046] (3) Pretreatment of the heat-sealing layer film material: corona treatment is performed on the outer surface of the heat-sealing layer film 20...

Embodiment 2

[0053] This embodiment serves as an improvement of the embodiment, and this embodiment provides a production method for a high-stretch packaging film 1, including the following steps:

[0054] (1) Preparation materials: including the upper surface film material, the middle layer coil material and the heat seal layer film material; the upper surface film material is nylon or modified nylon film, and the thickness of the upper surface film material is 1-30 μm; heat sealing The film material of the layer is polypropylene or modified polypropylene film, and the thickness of the film material of the heat-sealing layer is 50-120 μm; 1-30μm;

[0055] (2) Pretreatment of the upper surface film material: corona treatment is carried out on the outer surface of the upper surface film 40, and the roll is harvested as an upper surface coil material for subsequent use;

[0056] (3) Pretreatment of the heat-sealing layer film material: corona treatment is performed on the outer surface of t...

Embodiment 3

[0062] This embodiment serves as an improvement of the embodiment, and this embodiment provides a production method for a high-stretch packaging film 1, including the following steps:

[0063] (1) Preparation materials: including the upper surface film material, the middle layer coil material and the heat seal layer film material; the upper surface film material is nylon or modified nylon film, and the thickness of the upper surface film material is 1-30 μm; heat sealing The film material of the layer is polypropylene or modified polypropylene film, and the thickness of the film material of the heat-sealing layer is 50-120 μm; 1-30μm;

[0064] (2) Pretreatment of the upper surface film material: corona treatment is carried out on the outer surface of the upper surface film 40, and the roll is harvested as an upper surface coil material for subsequent use;

[0065] (3) Pretreatment of the heat-sealing layer film material: corona treatment is performed on the outer surface of t...

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Abstract

The invention provides a high-extensibility packaging film. The high-extensibility packaging film comprises a film body, wherein the film body comprises an upper surface layer, a middle layer and a heat-seal layer, the upper surface layer, the middle layer and the heat-seal layer are sequentially stacked and bonded from top to bottom, the thickness of the middle layer is 1-30 microns, and the middle layer is made of aluminum alloy. The invention also provides a production method for producing the high-extensibility packaging film and an external package applying the high-extensibility packaging film. The high-extensibility packaging film has good ductility, and no micro-hole is formed in the rear surface after stretching and extension. By adopting the production method, the bonding of themiddle layer and the upper surface layer and the heat-seal layer is tighter, and thus the bonding strength after bonding of the upper surface layer, the middle layer and the heat-seal layer is improved. The external package can effectively isolate outside air and liquid and thus prevent contained articles in the external package from going bad.

Description

technical field [0001] The invention relates to the field of packaging materials, in particular to a high-stretch packaging film, its production method and outer packaging. Background technique [0002] Existing pre-packaged foods are generally packaged with multi-layer adhesive film outer packaging with polyester film, nylon film and polyethylene film as the base layer. In order to prolong the shelf life of food, pre-packaged food manufacturers will use Inject an inert protective gas to reduce the oxygen content in the outer packaging and inhibit the growth of bacteria on the food, but the outer packaging of the above-mentioned multi-layer composite film has poor ductility and low tensile resistance. After being stretched, micropores will appear on the surface, so that the outer packaging cannot isolate the entry of external gas and liquid, and it is impossible to avoid the outflow of the protective gas in the outer packaging. As time goes by, the food in the outer packagin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/20B32B15/14B32B15/085B32B27/02B32B27/34B32B27/32B32B37/12B32B37/10B32B37/06B32B38/00B65D65/40
CPCB65D65/40B32B5/02B32B15/085B32B15/14B32B15/20B32B27/32B32B37/06B32B37/10B32B37/1284B32B38/0008B32B2262/0261B32B2307/54B32B2307/724B32B2307/7246B32B2553/00
Inventor 张逢辉
Owner FOSHAN NANHAI LIDA PACKAGING
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