Puncture resistant high-barrier plastic composite film and packaging bag

A composite film, puncture-resistant technology, applied in high-barrier plastic composite film and packaging bags, puncture-resistant field, can solve the problem of puncture resistance, poor impact resistance, weak barrier performance, easy penetration, bag breakage, tearing and other problems, to achieve the effect of strong barrier performance and strong impact resistance

Active Publication Date: 2018-10-02
青岛方大包装股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Poor puncture resistance and impact resistance
This is the weakness of ordinary plastic bags. If they are used to package dry goods, fish and shrimp and other aquatic products, frozen products, etc., probl

Method used

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  • Puncture resistant high-barrier plastic composite film and packaging bag
  • Puncture resistant high-barrier plastic composite film and packaging bag
  • Puncture resistant high-barrier plastic composite film and packaging bag

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0040] Example 1

[0041] A reinforced puncture-resistant polyethylene, which uses the following raw materials through melt blending, extrusion and film blowing:

[0042]

[0043]

[0044] Among them, linear polyethylene is a conventional component; low-density polyethylene plays a role in regulating the heat-sealing temperature; metallocene polyethylene enhances firmness; elastomers improve puncture resistance and flexibility. The film has good heat-sealability with the help of polyethylene, and the special composition makes up for the lack of puncture resistance and serves as an inner layer. The elastomer uses any one or more of a styrene-based thermoplastic elastomer, a polyurethane-based thermoplastic elastomer, a polyolefin-based thermoplastic elastomer, and a polyamide-based thermoplastic elastomer. The low density polyethylene has a density of 0.910-0.925g / cm 3 , The density of the linear low-density polyethylene is 0.918~0.935g / cm3, and the density of the metallocene polye...

Example Embodiment

[0050] Example 2

[0051] A puncture-resistant, high-barrier plastic composite film, comprising a multi-layer film, the multi-layer film is a penetration-resistant layer, a stretched layer, a barrier layer, and a printing layer;

[0052] The puncture-resistant layer adopts the reinforced puncture-resistant polyethylene according to claim 1;

[0053] The stretching layer adopts a biaxially oriented nylon film; the biaxially oriented nylon (polyamide, NY) is strong and has good puncture resistance. Although the material has no heat sealability, it cannot be used as an inner layer, but it is compatible with reinforced Puncture PE compound, complementary advantages, further enhance puncture resistance.

[0054] The barrier layer adopts aluminum foil; the aluminum foil has high light and heat reflectance, heat insulation, moisture resistance, opacity, and can effectively block ultraviolet rays, greatly improving its barrier performance and oxidation resistance.

[0055] The printing layer i...

Example Embodiment

[0059] Example 3

[0060] A composite packaging bag is made of the puncture-resistant, high-barrier plastic composite packaging bag film described in Example 2. When making bags, the hot knife temperature of the bag making machine is 112 degrees, and the bag making speed is 40 lines / min.

[0061] In order to ensure that the puncture resistance and high barrier properties meet the standards, the relevant inspection standards for materials, semi-finished products and finished products are as follows:

[0062] 1. PET, NY, PE, AL corona test, the corona value should be 42, 42, and 38 dyne in order. Good corona treatment can ensure the quality of printing and composite.

[0063] 2. The tensile test of PET, NY, PE should be greater than 40 Newtons;

[0064] 3. The friction coefficient test of PET, NY, PE, 025-0.4, 0.1-0.28 respectively;

[0065] 4. NY and PE anti-pendulum puncture strength test should be greater than 0.8 Newton;

[0066] 5. Peel strength test after compounding, the three layer...

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Abstract

The invention discloses a puncture resistant high-barrier plastic composite film and a packaging bag manufactured through the film. The film is a polyethylene film with excellent performance, which ismainly composed of linear low density polyethylene, low density polyethylene, metallocene polyethylene and an elastomer to a certain degree, takes the polyethylene film as a puncture resistant layer,and moreover separately takes a biaxially oriented nylon film, aluminum foils and biaxially oriented phthalic glycolate as a stretching layer, a barrier layer and a printing layer. A multilayer composite film structure comprising the puncture resistant layer, the stretching layer, the barrier layer and the printing layer achieves the effects of sealing, puncture resistance and high resistance.

Description

technical field [0001] The invention relates to the technical field of packaging bag production, in particular to a puncture-resistant, high-barrier plastic composite film and a packaging bag. Background technique [0002] Packaging bags made of plastic are generally made of plastic film, which has good chemical resistance, excellent insulation, good acid resistance, alkali resistance, and various organic solvent resistance. It has the characteristics of no leakage and no oxidation for a long time. However, compared with some special needs, ordinary plastic packaging bags have the following shortcomings: [0003] 1. Poor puncture resistance and impact resistance. This is the weakness of ordinary plastic bags. If they are used to pack dry goods, fish and shrimp and other aquatic products, frozen products, etc., problems of penetration, bag breakage and tearing are prone to occur during packaging and transportation; [0004] 2. The barrier performance is not strong. Some pa...

Claims

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Application Information

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IPC IPC(8): B32B15/20B32B15/088B32B15/09B32B27/08B32B27/32B32B27/34C08L23/08C08L23/06C08J5/18B65D30/08
CPCB32B15/088B32B15/09B32B15/20B32B27/08B32B27/32B32B27/34B32B2307/304B32B2307/306B32B2307/558B32B2307/71B32B2307/7265B32B2439/70B65D31/04C08J5/18C08J2323/08C08J2423/06
Inventor 张秉玉
Owner 青岛方大包装股份有限公司
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