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Anticorrosive gas penetration composite packaging material and preparation method thereof

A composite packaging material and gas penetration technology, applied in the field of anti-corrosive gas penetration composite packaging materials and their preparation, can solve the problems of unstable product quality, delamination of composite materials, affecting the normal use of products, etc. The effect of beautiful patterns, improved stability, good tolerance

Pending Publication Date: 2019-11-26
河北永新包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the research on the resistance to corrosive gases in the field of research on the special functions of plastic flexible packaging is still in its infancy. At present, an American company is conducting research, but the quality of its products is not very stable, and the phenomenon of composite material delamination often occurs, which affects the product. normal use

Method used

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  • Anticorrosive gas penetration composite packaging material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The total thickness of the corrosion-resistant gas penetration composite packaging material is 92 μm, and the thickness of the polyamide polyethylene co-extrusion film is 80 μm. The weight ratio of metallocene polyethylene and low-density polyethylene in the heat-sealing layer is 35:65; the corona layer is 100% polyamide resin; the weight ratio of the heat-sealing layer and the corona layer is 72:28.

[0030] Preparation:

[0031] (1) Add the metallocene polyethylene and low-density polyethylene for the heat-sealing layer, and the polyamide resin for the corona layer, and add them to a multi-layer extruder for co-extrusion to form a polyamide-polyethylene co-extrusion film ;The processing temperature of the resin during extrusion molding is 210°C, the production speed is 41m / min, and the inflation ratio is 2.2;

[0032] (2) The extruded polyamide polyethylene co-extruded film is cooled and shaped and cut into the required width; the cooling and shaping method is air co...

Embodiment 2

[0037] The total thickness of the corrosion-resistant gas penetration composite packaging material is 85 μm, and the thickness of the polyamide polyethylene co-extrusion film is 73 μm. The weight ratio of metallocene polyethylene and low-density polyethylene in the heat-sealing layer is 40:60; the corona layer is 100% polyamide resin; the weight ratio of the heat-sealing layer and the corona layer is 75:25.

[0038] Preparation:

[0039](1) Add the metallocene polyethylene and low-density polyethylene for the heat-sealing layer, and the polyamide resin for the corona layer, and add them to a multi-layer extruder for co-extrusion to form a polyamide-polyethylene co-extrusion film ;The processing temperature of the resin during extrusion molding is 200°C, the production speed is 42m / min, and the inflation ratio is 2.1;

[0040] (2) The extruded polyamide polyethylene co-extruded film is cooled and shaped and cut into the required width; the cooling and shaping method is air coo...

Embodiment 3

[0045] The total thickness of the corrosion-resistant gas penetration composite packaging material is 82 μm, and the thickness of the polyamide polyethylene co-extrusion film is 70 μm. The weight ratio of metallocene polyethylene and low-density polyethylene in the heat-sealing layer is 45:55; the corona layer is 100% polyamide resin; the weight ratio of the heat-sealing layer and the corona layer is 75:25.

[0046] Preparation:

[0047] (1) Add the metallocene polyethylene and low-density polyethylene for the heat-sealing layer, and the polyamide resin for the corona layer, and add them to a multi-layer extruder for co-extrusion to form a polyamide-polyethylene co-extrusion film ;The processing temperature of the resin during extrusion molding is 170°C, the production speed is 40.5m / min, and the inflation ratio is 2.3;

[0048] (2) The extruded polyamide polyethylene co-extrusion film is cooled and shaped and cut into the required width; the cooling and shaping method is air...

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Abstract

The invention discloses an anticorrosive gas penetration composite packaging material and a preparation method thereof. The composite packaging material is formed by compounding a polyamide polyethylene coextruded film and a biaxially-oriented polyethylene glycol terephthalate film, and the polyamide polyethylene coextruded film is formed by coextruding a heat sealing layer and a corona layer; theheat sealing layer is composed of metallocene polyethylene and low-density polyethylene, and the corona layer is made of a polyamide resin; and an adhesive is applied between the polyamide polyethylene coextruded film and the biaxially-oriented polyethylene glycol terephthalate film in a coating manner. The preparation method comprises the following steps: (1) preparing the polyamide polyethylenecoextruded film; and (2) carrying out intaglio printing on the biaxially-oriented polyethylene glycol terephthalate film, and carrying out dry compounding on the printed biaxially-oriented polyethylene glycol terephthalate film and the polyamide polyethylene coextruded film by using the adhesive. The composite strength, the heat sealing strength and other indexes of the composite packaging material all meet the requirements of product design, and the composite packaging material has good tolerance to corrosive gas, and is suitable for packaging products containing essence and the like.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to a composite packaging material resistant to corrosive gas penetration and a preparation method thereof. Background technique [0002] With the improvement of people's living standards, the demand for clothing flavoring agents is increasing day by day, and the demand for its packaging is also seeking new changes. Based on the shortcomings of bottled packaging, such as large space occupation, high packaging material costs, and high storage and transportation costs, it is gradually shifting to composite flexible packaging. Transformation to reduce packaging costs, save resources, and reduce pollution. However, when the composite flexible packaging contains clothing flavoring agents containing a large amount of fragrance ingredients, due to its super gas permeability and solubility to resins, it is prone to delamination between composite film layers, local foa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B7/12B32B27/36B32B27/32B32B27/34B32B37/12B65D65/40C08L23/06C08L77/00C08J5/18
CPCB32B7/12B32B27/32B32B27/34B32B27/36B32B37/12B65D65/40C08J5/18C08J2323/06C08J2377/00C08J2423/06
Inventor 姜志绘陈宝生郭群良杨沙解晓霞
Owner 河北永新包装有限公司
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