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PE (Poly Ethylene) heat shrink film and preparation method thereof

A heat-shrinkable film and raw material technology, applied in the field of polymer materials, can solve the problems of thick thickness, high cost, and many raw materials, and achieve the effects of simple preparation process, high toughness, and good strength

Inactive Publication Date: 2016-10-12
桐城市华猫软膜有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in the patent of a heat-shrinkable packaging color film and its production method with the publication number CN103264553, it discloses a heat-shrinkable packaging film with the characteristics of impact resistance, tearing, and good heat sealing, which can meet the packaging requirements. Requirements, but its thickness is 0.07-0.075mm, the thickness is thicker, which greatly increases the overall weight and brings a lot of inconvenience to transportation. At the same time, the production of thicker materials uses more raw materials, and the cost is relatively high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A PE heat-shrinkable film, the chemical composition ratio of the PE heat-shrinkable film includes 5 parts of low-density polyethylene, 30 parts of high-density polyethylene, 40 parts of metallocene polyethylene, 20 parts of ultra-high molecular weight polyethylene, poly 5 parts vinyl wax.

[0016] A preparation method of PE heat shrinkable film, described preparation process is carried out according to the following steps,

[0017] (1) Weigh the raw materials according to the ratio;

[0018] (2) Put the above raw materials into a 140°C plastic refining machine and heat for 10 minutes to obtain a plasticized hot material;

[0019] (3) Send the plasticized hot material to the PE heat-shrinkable film blowing unit. Expansion molding, over-temperature automatic air cooling to obtain heat shrinkable film.

Embodiment 2

[0020] Example 2: The rest are the same as in Example 1, except that the PE heat-shrinkable film consists of the following raw materials in parts by weight: 6 parts of low-density polyethylene, 38 parts of high-density polyethylene, 32 parts of metallocene polyethylene, ultra-high molecular weight polyethylene 20 parts of polyethylene, 4 parts of polyethylene wax; in the step (2), the temperature of the plastic refining machine is controlled at 140-150 ° C; in the step (3), the temperature of the rotary die in the center of the extruder is 150 ℃.

Embodiment 3

[0021] Example 3: The rest are the same as in Example 1, except that the PE heat-shrinkable film consists of the following raw materials in parts by weight: 9 parts of low-density polyethylene, 30 parts of high-density polyethylene, 33 parts of metallocene polyethylene, ultra-high molecular weight 23 parts of polyethylene, 5 parts of polyethylene wax; in the step (2), the temperature of the plastic refining machine is controlled at 150-160 °C; in the step (3), the temperature of the rotary die in the center of the extruder is 140 ℃.

[0022] After the above process steps, the obtained PE heat shrinkable film has good strength and high toughness, and the preparation process is simple and easy to master.

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PUM

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Abstract

The invention relates to a PE (Poly Ethylene) heat shrink film, which relates to the technical field of high polymer materials. The PE heat shrink film is prepared from the following raw materials in parts by weight: 3-9 parts of low density polyethylene, 23-41 parts of high density polyethylene, 25-45 parts of metallocene polyethylene, 18-40 parts of ultra-high molecular weight polyethylene and 2-10 parts of polyethylene wax. The invention also discloses a preparation method of the PE heat shrink film. The PE heat shrink film prepared by the method has the advantages of good flexibility, impact resistance, high tearing resistance, small possibility of damaging, moisture prevention, big percentage of contraction, high intensity and high toughness.

Description

technical field [0001] The invention relates to a PE heat shrinkable film and a preparation method of the PE heat shrinkable film, belonging to the technical field of polymer materials. Background technique [0002] PE heat shrinkable film is widely used in the packaging of wine, cans and various beverages. The current PE heat shrinkable film has limitations in terms of strength and toughness. For example, in the patent of a heat-shrinkable packaging color film and its production method with the publication number CN103264553, it discloses a heat-shrinkable packaging film with the characteristics of impact resistance, tearing, and good heat sealing, which can meet the packaging requirements. Requirements, but its thickness is 0.07-0.075mm, thicker in thickness, which greatly increases the overall weight and brings a lot of inconvenience to transportation. At the same time, more raw materials are used for thicker production, and the cost is relatively high. Contents of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06B29C55/28B29C47/60B29C47/92B29C48/92
CPCB29C48/625B29C48/92B29C55/28B29C2948/92704B29C2948/92904C08J5/18C08J2323/06C08J2423/06C08L23/06C08L2203/16C08L2205/025C08L2205/035C08L2207/062C08L2207/066C08L2207/068
Inventor 方小梅吴金明张启红
Owner 桐城市华猫软膜有限公司
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