High-performance barrier environmental-friendly package material of inner bag of flexible freight bag and preparation method of package material

A packaging material and high-performance technology, applied in packaging, wrapping paper, transportation and packaging, etc., to achieve good heat sealing performance, good thickness deviation, and good film transparency

Active Publication Date: 2014-06-18
JRB PACKING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems existing in the existing high-barrier materials, thereby providing a high-performance barrier environm...

Method used

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  • High-performance barrier environmental-friendly package material of inner bag of flexible freight bag and preparation method of package material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, a high-performance barrier environmental protection packaging material for the inner bag of the container bag, its structure from top to bottom is the first surface layer 1, the first adhesive layer 2, the ethylene-vinyl alcohol layer 3, and the second adhesive layer 4 and the second skin 5;

[0023] Both the first surface layer 1 and the second surface layer 5 are low-density polyethylene (LDPE) or linear low-density polyethylene layer (LLDPE); or any layer of the first surface layer 1 and the second surface layer 5 is ethylene-ethylene Alcohol layer (EVOH), another layer is low density polyethylene (LDPE) or linear low density polyethylene (LLDPE) layer;

[0024] Both the first adhesive layer 2 and the second adhesive layer 4 are chitosan cellulose layers. The thickness of the ethylene-vinyl alcohol layer 3 is 12-16 μm.

[0025] The first and second low-density polyethylene (LDPE) or linear low-density polyethylene (LLDPE) layers make the...

Embodiment 2

[0029] The inner bag of the container bag uses a high-performance barrier environmental protection packaging material. Because the high-barrier multi-layer co-extrusion composite material has a multi-layer structure, it needs special multi-layer co-extrusion extrusion equipment to form, and the appropriate material is selected according to the material characteristics of each layer. screw type. The present invention adopts a special five-layer co-extrusion extruder produced in Taiwan. The diameters of three sets of extruder screw rods are: 45mm, 75mm, and 100mm respectively. Bit winder for winding. Other ancillary equipment includes: dryer, material conveying system, online scrap recycling system.

[0030] The specific steps are: the high-performance barrier environmental protection packaging material used for the inner bag of the container bag is divided into 5 layers from the inside to the outside, and the middle layer is ethylene-vinyl alcohol layer (3), which can be direc...

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Abstract

The invention relates to a high-performance barrier environmental-friendly package material of an inner bag of a flexible freight bag and a preparation method of the package material, which belong to the technical field of flexible package materials. The environmental-friendly package material structurally sequentially comprises a first polyethylene layer, a first adhesive layer, an ethylene-vinyl alcohol (EVOH) layer, a second adhesive layer and a second polyethylene layer from top to bottom; a composite thin film is prepared via a five-layer co-extrusion casting process. The package material of the inner bag of the flexible freight bag has good barrier performance, an environmental-friendly effect and an excellent appearance effect, saves resources and energy, enables packaged goods to not deteriorate easily, and is excellent in thin film transparency, thickness tolerance and heat sealing performance; the environmental-friendly package material prepared via the multiple-layer co-extrusion casting process has the advantages of being easy to recover, generating no harmful gas after burning, and the like, thereby having very high practical value and good market prospects.

Description

technical field [0001] The invention relates to a high-performance barrier environment-friendly packaging material for container bag inner bags and a preparation method thereof, belonging to the technical field of flexible packaging materials. Background technique [0002] With the improvement of people's living standards and the advancement of science and technology, consumers have put forward various new requirements for packaging materials, especially the high performance, multi-function and environmental protection performance of packaging materials have attracted more attention. In addition, the rapid development of container bag products in various commodity packaging makes the product's requirements for container bags not only limited to product protection, but more attention is paid to the functionality of container bag products. For example, in the field of food and pharmaceutical packaging, the packaging materials used are required to have relatively high barrier p...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B7/12B32B37/00B65D65/40
Inventor 孙昊张帆张新昌
Owner JRB PACKING CO LTD
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