High-light low-haze PE heat shrinkable film and preparation method thereof

A heat-shrinkable film, low haze technology, applied in the field of film materials, can solve the problems that the package contents and printed information cannot be well presented, the transparency and gloss of the shrink film color film are general, etc., so as to improve the packaging production efficiency, The effect of uniform distribution of shrinkage tension and high shrinkage rate

Active Publication Date: 2019-09-10
HUANGSHAN NOVEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the PE heat shrinkable film on the market reaches a certain thickness, the transparency and gloss of the shrink film color film after printing are average, and the packaging content and printing information cannot be well presented, which requires a certain thickness requirement (to meet physical and mechanical requirements). performance) at the same time, the optical performance (low haze, high gloss, high transparency) is also good PE heat shrinkable film, in order to achieve a clear and bright shelf display effect

Method used

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  • High-light low-haze PE heat shrinkable film and preparation method thereof
  • High-light low-haze PE heat shrinkable film and preparation method thereof
  • High-light low-haze PE heat shrinkable film and preparation method thereof

Examples

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Effect test

Embodiment 1

[0038] The preparation method of the high light and low haze PE heat shrinkable film of the present invention comprises the following steps:

[0039] Step 1, Extrusion: Add the corona layer, sub-outer layer 1, middle layer, sub-outer layer 2, and PE resin and additives of the heat-sealing layer into German WH5 layer co-extruded blown film respectively according to the above component ratio requirements In the hopper of the machine, the melt is formed by the heating device and the extruder, and the melt is extruded into a tube through the ring die;

[0040] The corona layer, the intermediate layer, and the heat-sealing layer all include metallocene polyethylene, linear low-density polyethylene, low-density polyethylene and processing aids with a mass ratio of 30:10:60:0.2;

[0041] Both the first outer layer and the second outer layer include metallocene polyethylene, high density polyethylene and low density polyethylene with a mass ratio of 30:30:40.

[0042] German WH5 layer ...

Embodiment 2

[0057] The preparation method is the same as in Example 1, only the formulation of each film layer is adjusted, specifically: the corona layer, the intermediate layer, and the heat-sealing layer all include metallocene polyethylene with a mass ratio of 28:8:58:0.1, Linear low-density polyethylene, low-density polyethylene and processing aids; the second outer layer one and the second outer layer both include metallocene polyethylene, high-density polyethylene and low-density polyethylene with a mass ratio of 28:28:38 vinyl.

Embodiment 3

[0059] The preparation method is the same as in Example 1, only the formulation of each film layer is adjusted, specifically: the corona layer, the intermediate layer, and the heat-sealing layer all include metallocene polyethylene, linear Low-density polyethylene, low-density polyethylene and processing aids; the second outer layer one and the second outer layer both include metallocene polyethylene, high-density polyethylene and low-density polyethylene with a mass ratio of 32:32:42 .

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Abstract

The invention relates to a high-light low-haze PE heat shrinkable film and a preparation method thereof. A film layer structure of the PE heat shrinkable film successively comprises a corona layer, afirst sub-outer layer, an intermediate layer, a second sub-outer layer and a heat sealing layer; the corona layer, the intermediate layer and the heat sealing layer separately comprise metallocene polyethylene, linear low-density polyethylene, low-density polyethylene and a processing aid in a mass ratio of (28-32):(8-12):(58-62):(0.1-0.3); and the first sub-outer layer and the second sub-outer layer separately comprise metallocene polyethylene, high-density polyethylene and low-density polyethylene in a mass ratio of (28-32):(28-32):(38-42). The PE heat shrinkable film has high shrinkage rate, powerful shrinkage memory function, large tensile strength, powerful puncture resistance and anisotropic tearing resistance, and has the characteristics of low haze, high transparency and high gloss, the friction coefficient is moderate and stable, thickness uniformity and flatness are good, and printing adaptability is good.

Description

technical field [0001] The invention belongs to the field of film materials, and in particular relates to a high-gloss and low-haze PE heat-shrinkable film and a preparation method thereof. Background technique [0002] At present, the plastic shrink film market is developing rapidly, and it is involved in food, medicine, electronic appliances, metal products and other fields. The common materials are PVC, POF, PE, OPS and PET, which have good flexibility and resistance. Impact, strong tear resistance, not easy to break, not afraid of moisture, large shrinkage, etc., its obvious advantages make it a development trend to replace traditional carton packaging. Compared with other plastic shrink films, PE heat shrinkable films are low in cost, environmentally friendly (recyclable), have excellent shelf effects, and have good protection. Cluster packaging for individual products is a hot choice, and major beverage companies are actively promoting the transformation of packaging ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/32B32B27/18B32B27/08B32B37/00
CPCB32B27/08B32B27/18B32B27/32B32B37/00
Inventor 查显宇汪学文
Owner HUANGSHAN NOVEL
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