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A self-supporting bag packaging material that can be opened by linear tearing and preparation method thereof

A packaging material, a straight-line tearing technology, applied in the field of stand-up pouches, can solve the problems of difficulty in balancing the depth of the laser easy-tear line, damage and air leakage of the stand-up pouch, and failure to achieve easy tearing effect, etc. The effect of low tear strength and easy longitudinal and transverse tearing

Active Publication Date: 2022-07-08
HUANGSHAN NOVEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this form still has obvious disadvantages: 1. It is still necessary to make easy-tear openings on both sides of the bag surface, which affects the appearance; 2. It is difficult to balance the depth of the laser easy-tear line. If it is damaged, it is easy to damage the self-supporting pouch and cause food safety problems.

Method used

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  • A self-supporting bag packaging material that can be opened by linear tearing and preparation method thereof
  • A self-supporting bag packaging material that can be opened by linear tearing and preparation method thereof
  • A self-supporting bag packaging material that can be opened by linear tearing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] S1. Printing process: print a layer of ink on the surface of the BOPP film, the printing speed is 150m / min, and the ink is dried and cured at 40°C to form the ink layer 2;

[0053] S2, film blowing process: add corona layer raw materials, intermediate layer raw materials and heat sealing layer raw materials to the three barrels of the co-extrusion machine respectively. The formulas are as follows:

[0054] Corona layer: 50wt% linear low density polyethylene, 49.8wt% low density polyethylene and 0.2wt% processing aid;

[0055] Intermediate layer: 35wt% linear low density polyethylene, 60wt% high density polyethylene and 5wt% polybutene;

[0056] Heat sealing layer: 40wt% metallocene linear low density polyethylene, 58wt% high density polyethylene, 1wt% open masterbatch and 1wt% slip agent.

[0057] Then adopt the three-layer co-extrusion blown film process to make the film to obtain the PE layer 4;

[0058] S3. One-time compounding: dry compounding the BOPP film layer ...

Embodiment 2

[0061] S1. Printing process: print a layer of ink on the surface of the BOPP film, the printing speed is 200m / min, and the ink is dried and cured at 50°C to form the ink layer 2;

[0062] S2, film blowing process: add corona layer raw materials, intermediate layer raw materials and heat sealing layer raw materials to the three barrels of the co-extrusion machine respectively. The formulas are as follows:

[0063] Corona layer: 66.3wt% linear low density polyethylene, 33.3wt% low density polyethylene and 0.4wt% processing aid;

[0064] Intermediate layer: 50.0wt% linear low density polyethylene, 40.0% high density polyethylene and 10.0% polybutene;

[0065] Heat sealing layer: 53.9wt% metallocene linear low density polyethylene, 43.0wt% high density polyethylene, 1.6wt% open masterbatch and 1.5wt% slip agent.

[0066] Then adopt the three-layer co-extrusion blown film process to make the film to obtain the PE layer 4;

[0067] S3. One-time compounding: dry compounding the BOP...

Embodiment 3

[0070] S1. Printing process: print a layer of ink on the surface of the BOPP film, the printing speed is 250m / min, and the ink is dried and cured at 60°C to form the ink layer 2;

[0071] S2, film blowing process: add corona layer raw materials, intermediate layer raw materials and heat sealing layer raw materials to the three barrels of the co-extrusion machine respectively. The formulas are as follows:

[0072] Corona layer: 75wt% linear low density polyethylene, 23wt% low density polyethylene and 2wt% processing aid;

[0073] Intermediate layer: 70wt% linear low density polyethylene, 30wt% high density polyethylene and 20wt% polybutene;

[0074] Heat sealing layer: 40wt% metallocene linear low density polyethylene, 50wt% high density polyethylene, 5wt% open masterbatch and 5wt% slip agent.

[0075] Then adopt the three-layer co-extrusion blown film process to make the film to obtain the PE layer 4;

[0076] S3. One-time compounding: dry compounding the BOPP film layer 1 w...

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Abstract

The invention relates to a self-supporting bag packaging material that can be opened in a straight line and a preparation method thereof, belonging to the technical field of self-supporting bags. The self-supporting bag packaging material is a composite film, and the composite film comprises a BOPP film layer, an ink layer, Aluminum foil layer and PE layer, PE layer includes corona layer, intermediate layer and heat sealing layer. The interlayer peeling force of the self-supporting bag composite film material prepared by the invention is 3-3.5N / 15mm, which is beneficial to the easy tearability of the composite film; and the Elmendorf tearing strength is small, so that the prepared self-supporting bag can be easily torn Open; it can be manually torn open without the need for easy tearing, and can be easily torn without laser tearing lines, and the tear opening is in a straight state; greatly improving the user experience.

Description

technical field [0001] The invention relates to the field of stand-up pouches, in particular to a straight-line tear open stand-up pouch packaging material and a preparation method thereof. Background technique [0002] At present, in order to facilitate the opening of the stand-up pouches on the market, U-shaped, V-shaped or flat-shaped easy-tear openings are basically used on both sides, which is convenient for users to tear open them by hand. However, since the plastic film of the stand-up pouch is composed of multiple layers, and the molecular orientation structure of each layer of film material is different, the degree of tearing is different, so the composite film is difficult to tear. When tearing the stand-up pouch, it often occurs that the tear opening of the bag surface is not neat, and the contents are spilled; The repeated sealing of the zipper is not strong and the air leaks, and the zipper self-supporting bag loses the function of repeated use. [0003] In or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B33/00B32B27/32B32B27/18B32B27/08B32B27/06B32B15/20B32B15/085B32B37/12C08L23/08C08L23/06C08L23/20C08J5/18C09J175/04B65D65/40B65D65/42
CPCB32B33/00B32B27/32B32B27/327B32B27/18B32B27/08B32B27/06B32B15/20B32B15/085B32B37/12C08J5/18C09J175/04B65D65/40B65D65/42C08J2323/08C08J2423/06C08J2423/20Y02W90/10
Inventor 胡凯方仕臣王卫民方坚
Owner HUANGSHAN NOVEL
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