High-barrier semi-high temperature cooking liquid packaging material and packaging bag made of the same

A technology of high-temperature cooking and packaging materials, which is applied in the field of packaging materials, can solve the problems of not being resistant to drops, sealing anti-pollution, large space occupied by the bottle body, and high cost, and achieves excellent sealing, saving transportation space, and excellent barrier properties. Effect

Active Publication Date: 2013-07-17
浙江诚信包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Juice liquid packaging bags need to meet the above requirements. At present, the large-scale juice liquid packaging in the general market basically uses plastic bottles, which is expensive. The bottle body takes up a lot of space and is easily deformed, which is extremely inconvenient.
With the continuous development of packaging technology, juice packaging bags are more and more widely used, generally using polyester film/aluminum foil/nylon/cast polypro

Method used

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  • High-barrier semi-high temperature cooking liquid packaging material and packaging bag made of the same
  • High-barrier semi-high temperature cooking liquid packaging material and packaging bag made of the same
  • High-barrier semi-high temperature cooking liquid packaging material and packaging bag made of the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Preparation of PE layer: The PE layer is made by three-layer co-extrusion blow molding of the surface layer, the middle layer and the heat-sealing layer. The surface layer is made of metallocene PE and LDPE blended at a weight ratio of 3:1, and the middle layer is made of metallocene PE and LDPE. 1. The ethylene propylene copolymerized elastomer is blended at a weight ratio of 5:1:1, and the heat-sealing layer (inner layer) is blended with a metallocene PE and a zinc-neutral vinyl acid copolymer at a weight ratio of 4:1. The specific method is as follows:

[0033] 1) According to the above ratio, add the surface layer raw materials into the outer layer hopper, add the middle layer raw materials into the middle layer hopper, and add the heat-sealing layer raw materials into the inner layer hopper; the total thickness of the PE layer is 100%, and the thickness of the surface layer is controlled at 25± 2%, the thickness of the middle layer is 50±4%, and the thickness of...

Embodiment 2

[0039] The production of the liquid packaging bag is the same as in Example 1, the difference is: 1. Preparation of the PE layer: the PE layer is made by three-layer co-extrusion blow molding of the surface layer, the middle layer and the heat-sealing layer, and the surface layer is made of metallocene PE and LDPE. Blended at a weight ratio of 2:1, the middle layer is made of metallocene PE, LDPE, and ethylene propylene copolymerized elastomer at a weight ratio of 5:1:1, and the heat-sealing layer (inner layer) is made of metallocene PE and zinc neutral vinyl Acidic copolymers were blended in a weight ratio of 3:1.

Embodiment 3

[0041] The production of the liquid packaging bag is the same as in Example 1, the difference is: 1. Preparation of the PE layer: the PE layer is made by three-layer co-extrusion blow molding of the surface layer, the middle layer and the heat-sealing layer, and the surface layer is made of metallocene PE and LDPE. 4:1 weight ratio blending, the middle layer is made by blending metallocene PE and LDPE at a weight ratio of 3:1, and then adding ethylene-propylene copolymer elastomer accounting for 10% of the total weight of the middle layer. The heat-sealing layer (inner layer) is blended with metallocene PE and zinc-neutral vinyl acidic copolymer at a weight ratio of 5:1.

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Abstract

The invention relates to a high-barrier semi-high temperature cooking liquid packaging material and a packaging bag made of the same. The high-barrier semi-high temperature cooking liquid packaging material is a composite membrane prepared by stacking a polyester film (PET) layer, an aluminum foil (Al) layer, a nylon (PA) layer and a polyethylene film (PE) layer from top to bottom by a dry compound machine. The PE layer is prepared by coextrusion blow molding on a surface layer, a middle layer and a heat seal layer; the surface layer is prepared by blending metallocene PE and LDPE in a weight ratio of 2-4:1; the middle layer is prepared by blending metallocene PE and LDPE in a weight ratio of 3-5:1, and adding ethylene propylene copolymer elastomer accounting for 10%-15% of the total weight of the middle layer; and the heat seal layer is prepared by blending metallocene PE and zinc neutralized ethylene copolymer in a weight ratio of 3-5:1. The invention employs a high quality material containing metallocene PE, which is added with a proper amount of an ethylene propylene copolymer elastomer, and especially the heat seal layer is added with the zinc neutralized ethylene copolymer; and the PE layer prepared through blow molding by a three-layer co-extrusion film blowing machine.

Description

technical field [0001] The invention relates to a packaging material, in particular to a high-barrier semi-high temperature cooking liquid packaging material and a packaging bag made thereof. Background technique [0002] The high-temperature retort bag is a packaging composite film material successfully developed by the U.S. Navy Research Institute in the 1960s to solve astronaut food. However, high-temperature retort bags did not develop in the United States and European countries. Later, they were introduced to Japan, but they were rapidly developed and widely used in Japan with an annual growth rate of 15%. Foods packaged in high-temperature retort bags have developed from dozens of types in the 1960s to hundreds of foods in the 1970s, and more than 800 types of foods packaged in high-temperature retort bags in the 1990s, including solid, liquid, and slurry and other food. The weight of the packaging has developed from the original small package of 200g to 500g / piece t...

Claims

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Application Information

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IPC IPC(8): B32B15/088B32B15/09B32B15/20B32B27/08B32B27/32B65D65/40
Inventor 宗宇后周海平
Owner 浙江诚信包装有限公司
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