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PE (polyethylene) shrink film with blocking layer and preparation method of PE shrink film

A technology of barrier layer and shrink film, applied in the field of PE shrink film and its preparation, can solve the problems of easy occurrence of adhesion, affecting the display of small packaged goods, and easily destroying the inner layer PE shrink film, etc., to achieve the effect of high production efficiency

Active Publication Date: 2015-05-06
ZHENGXIN PACKAGING CO LTD DONGGUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, after using the existing PE shrink film for two-layer packaging, the outer PE shrink film and the inner PE shrink film are prone to adhesion, resulting in easy damage to the inner PE shrink film when the outer PE shrink film is removed, affecting the small package. display of goods

Method used

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  • PE (polyethylene) shrink film with blocking layer and preparation method of PE shrink film
  • PE (polyethylene) shrink film with blocking layer and preparation method of PE shrink film

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 or figure 2 As shown, a PE shrink film with a barrier layer, it includes a PE shrink film body, the PE shrink film body includes an upper layer 1, a middle layer 2 and a lower layer 3 arranged in sequence from top to bottom, and also includes a barrier layer 4, the The barrier layer 4 is arranged on the surface of the PE shrink film body. The thickness ratio of the upper layer 1, the middle layer 2 and the lower layer 3 is 1:1.3~2:1.

[0030] A kind of PE shrink film with barrier layer of the present invention is provided with barrier layer 4 on the surface of PE shrink film main body; When packing, first adopt common PE shrink film as inner layer to pack commodity into several small packages in a conventional way, Then use the PE shrink film with barrier layer as the outer layer to pack some small packages into large packages. When packaging, the barrier layer 4 of the PE shrink film with barrier layer is in contact with the ordinary PE shrink film ...

Embodiment 2

[0040] Such as figure 1 or figure 2 As shown, a PE shrink film with a barrier layer, it includes a PE shrink film body, the PE shrink film body includes an upper layer 1, a middle layer 2 and a lower layer 3 arranged in sequence from top to bottom, and also includes a barrier layer 4, the The barrier layer 4 is arranged on the surface of the PE shrink film body. The thickness ratio of the upper layer 1, the middle layer 2 and the lower layer 3 is 1:1.3:1.

[0041]Wherein, the upper layer 1 is composed of 60% by weight of LDPE, 20% of HDPE, and 20% of LLDPE; the middle layer 2 is composed of 60% by weight of LDPE, 30% of HDPE, and 10% of LLDPE; The lower layer 3 is composed of 60% by weight of LDPE, 20% of HDPE, and 20% of LLDPE; the barrier layer 4 is composed of 20% by weight of polyamide resin, 2% of polyethylene wax, 3% of Composed of dammar resin, 75% isopropanol and ethyl acetate solvent.

[0042] A preparation method of a PE shrink film with a barrier layer, compris...

Embodiment 3

[0051] Such as figure 1 or figure 2 As shown, a PE shrink film with a barrier layer, it includes a PE shrink film body, the PE shrink film body includes an upper layer 1, a middle layer 2 and a lower layer 3 arranged in sequence from top to bottom, and also includes a barrier layer 4, the The barrier layer 4 is arranged on the surface of the PE shrink film body. The thickness ratio of the upper layer 1, the middle layer 2 and the lower layer 3 is 1:1.5:1.

[0052] The upper layer 1 is composed of 70% by weight of LDPE, 15% of HDPE, and 15% of LLDPE; the middle layer 2 is composed of 70% by weight of LDPE, 25% of HDPE, and 5% of LLDPE; The lower layer 3 is composed of 70% by weight of LDPE, 15% of HDPE, and 15% of LLDPE; the barrier layer 4 is composed of 25% by weight of polyamide resin, 3% of polyethylene wax, and 2% of dammar Resin, 70% isopropanol and ethyl acetate solvent.

[0053] A preparation method of a PE shrink film with a barrier layer, comprising the following...

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Abstract

The invention relates to the technical field of a package thin film, in particular to a PE (polyethylene) shrink film with a blocking layer and a preparation method of the PE shrink film. The PE shrink film with the blocking layer comprises a PE shrink film body, wherein the PE shrink film body comprises an upper layer, a middle layer and a lower layer in sequential arrangement from top to bottom, the PE shrink film also comprises the blocking layer, and the blocking layer is arranged on the surface of the PE shrink film body. Because of the addition of the blocking layer, two layers of PE shrink films with the blocking layer cannot generate adhesion. The raw material and the proportion of the blocking layer, the upper layer, the middle layer and the lower layer of the PE shrink film adopt the thin film framework effect, the vicat softening point is 100 DEG C to 110 DEG C, the shrink temperature can be lowered by 5 to 15 DEG C in a use process, the temperature required when the PE shrink film shrinks is lowered, and meanwhile, certain intensity is also provided for supporting packed objects. The preparation method of the PE shrink film with the blocking layer has the advantage that the production efficiency is high.

Description

technical field [0001] The invention relates to the technical field of packaging films, in particular to a PE shrink film with a barrier layer and a preparation method thereof. Background technique [0002] PE heat-shrinkable film is widely used in the packaging of wine, cans, mineral water, and various beverages. The product has good flexibility, strong impact resistance, tear resistance, and is not easy to break. The shrinkage rate is large. [0003] The existing PE shrink film generally adopts a three-layer structure, and each layer is prepared by mixing LDPE (low-density polyethylene), HDPE (high-density polyethylene) and LLDPE (linear low-density polyethylene). When PE shrink film is used for collective packaging, multiple products packaged with inner PE shrink film or multiple small packages packaged with inner PE shrink film (for example, 6 bottles of beverages are often packaged into 6 packs, Convenient for sale), and then packed into a large package by carton or ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/06B32B27/32C08L23/06C08L23/08C08L77/00C08L93/00B65D65/38B29C69/00B29C47/06B29C47/92B29C48/21B29C48/10B29C48/92
CPCB29C48/92B29C48/10B29C48/0017B29C48/21
Inventor 黄镇荣
Owner ZHENGXIN PACKAGING CO LTD DONGGUAN