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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., problems of penetration, bag breakage and tearing are prone to occur during packaging and transportation;
[0004] 2. The barrier performance is not strong
This is also difficult for ordinary plastic films with transparency

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

Embodiment 1

[0041] A reinforced puncture resistant polyethylene produced by melt blending extrusion blown film using the following raw materials:

[0042]

[0043]

[0044] Among them, linear polyethylene is the conventional component; low-density polyethylene plays the role of adjusting the heat sealing temperature; metallocene polyethylene enhances firmness; elastomer improves puncture resistance and flexibility. The film has good heat sealability with the help of polyethylene, and the special component makes up for the lack of puncture resistance, and is used as the inner layer. The elastomer is any one or more of styrene-based thermoplastic elastomers, polyurethane-based thermoplastic elastomers, polyolefin-based thermoplastic elastomers, and polyamide-based thermoplastic elastomers. Described low-density polyethylene density is 0.910-0.925g / cm 3 , the linear low density polyethylene density is 0.918~0.935g / cm3, the metallocene polyethylene density is 0.903~0.963g / cm3 3 .

[...

Embodiment 2

[0051] A puncture-resistant, high-barrier plastic composite film, including a multi-layer film, the multi-layer film is respectively a wear-resistant layer, a stretch layer, a barrier layer, and a printing layer;

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

[0053] The stretch layer adopts biaxially stretched nylon film; biaxially stretched nylon (polyamide, NY) is tough and has good puncture resistance. Puncture PE composite, complementary advantages, further enhance the puncture resistance.

[0054] The barrier layer is made of aluminum foil; the aluminum foil has high light and heat reflectivity, heat insulation, moisture-proof, light-proof, and can effectively block ultraviolet rays, greatly improving its barrier performance and oxidation resistance.

[0055] The printing layer adopts biaxially stretched ethanol phthalate, which has strong tensile strength, is not easy to displace during printing, compoundi...

Embodiment 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 temperature of the ironing knife of the bag making machine is 112 degrees, and the speed of bag making is 40 pieces / min.

[0061] In order to ensure that the puncture resistance and high barrier performance meet the standards, the relevant materials, semi-finished products and finished products shall be inspected according to the following standards:

[0062] 1. PET, NY, PE, AL corona test, the corona value should be 42, 42, 38 dynes in turn, good corona treatment can ensure the quality of printing and lamination

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

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

[0065] 4. Pendulum puncture resistance test of NY and PE should be greater than 0.8 Newton;

[0066] 5. Peel strength test after compounding, PET / AL...

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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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