High-performance shrinkage film and preparation method thereof

A shrink film, high-performance technology, applied in the field of packaging film, can solve the problems of the shrinking furnace temperature is not too high, the shrinkage rate is not high, the shrinkage effect is not good, etc., to achieve the effect of fast shrinkage, high transparency and high sealing strength

Inactive Publication Date: 2019-05-21
深圳市致新包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-performance shrink film and its preparation method, which is integrated by biaxial stretching after five layers of co-extrusion, so as to solve the problems of low shrinkage rate, poor shrinkage effect and shrinkage in the background technology mentioned above. The problem that the furnace temperature is not easy to be too high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] In terms of parts by weight, the raw materials include: 30 parts of polypropylene, 30 parts of linear low-density polyethylene, 35 parts of ultra-low density polyethylene, 2 parts of slippery agent, and 3 parts of anti-blocking agent. Among them, 30 parts of polypropylene (PP) include 20 parts of FS6612 polypropylene and 10 parts of 3980FL polypropylene.

[0028] FS6612 polypropylene is produced by Singapore Polyolefin Company, the model is FS6612;

[0029] 3980FL polypropylene is produced by Exxon Mobil Corporation, the model is 3980FL.

[0030] Linear low-density polyethylene (LLDPE), produced by Dow Chemical, the model is 2045G;

[0031] Ultra-low density polyethylene (ULDPE), produced by Dow Chemical, the model is 4203.

[0032] The production process of the five-layer biaxially oriented polyolefin heat-shrinkable film is:

[0033] Step A: Weigh the materials required for the outer layer, the inner three layers, and the inner layer, premix them separately, and st...

Embodiment 2

[0041] In terms of parts by weight, the raw materials include: 30 parts of polypropylene, 35 parts of linear low-density polyethylene, 30 parts of ultra-low density polyethylene, 2 parts of slippery agent, and 3 parts of anti-blocking agent. Among them, 30 parts of polypropylene (PP) include 20 parts of FS6612 polypropylene and 10 parts of F5606 polypropylene.

[0042] FS6612 polypropylene is produced by Singapore Polyolefin Company, the model is FS6612;

[0043] F5606 polypropylene is produced by CNPC, the model is F5606;

[0044] Linear low-density polyethylene (LLDPE), produced by Dow Chemical, the model is 2045G;

[0045] Ultra-low density polyethylene (ULDPE), produced by Dow Chemical, the model is 4203.

[0046] The production process of the five-layer biaxially oriented polyolefin heat-shrinkable film is:

[0047] Step A: Weigh the materials required for the outer layer, the inner three layers, and the inner layer, premix them separately, and stir them evenly.

[00...

Embodiment 3

[0055] In terms of parts by weight, the raw materials include: 30 parts of polypropylene, 65 parts of linear low-density polyethylene, 3 parts of slippery agent, and 2 parts of anti-blocking agent. Among them, 30 parts of polypropylene (PP) include 25 parts of FS6612 polypropylene and 10 parts of 3980FL polypropylene.

[0056] FS6612 polypropylene is produced by Singapore Polyolefin Company, the model is FS6612;

[0057] 3980FL polypropylene is produced by Exxon Mobil, the model is 3980FL;

[0058] Linear low-density polyethylene (LLDPE), produced by Dow Chemical, the model is 2645;

[0059] The production process of the five-layer biaxially oriented polyolefin heat-shrinkable film is:

[0060] Step A: Weigh the materials required for the outer layer, the inner three layers, and the inner layer, premix them separately, and stir them evenly.

[0061] Step B: The uniformly stirred mixture is sent to the extruder for processing to obtain a plasticized and homogenized melt. The...

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Abstract

The invention discloses a high-performance shrinkage film and a preparation method thereof. The invention adopts the preparation method of biaxial stretching into a whole after five layers of co-extrusion. The prepared shrinkage film comprises a first layer, a second layer, a third layer, a fourth layer and a fifth layer which are sequentially arranged; the first layer is an outer surface layer; the second layer, the third layer and the fourth layer are three inner layers; the fifth layer is an inner surface layer; the weight ratio of the outer surface layer to the inner surface layer is 1:1;the outer surface layer and the inner surface layer totally comprise 30 parts by weight of polypropylene and 5 parts by weight of aid; the inner three layers comprise 30-65 parts by weight of linear low-density polyethylene and 0-35 parts by weight of ultralow-density polyethylene; the linear low-density polyethylene and the ultralow-density polyethylene totally are 65 parts by weight. The shrinkage film has good shrinkage rate and thermal slip performance and high transparency, can reach 70 percent of shrinkage ratio at a temperature of 130 DEG C, and is high in shrinkage speed, high in tearing strength and high in sealing strength.

Description

technical field [0001] The invention belongs to the technical field of packaging films, and in particular relates to a high-performance shrink film and a preparation method thereof. Background technique [0002] Polyolefin shrink film has good toughness, impact resistance, strong tear resistance, moisture resistance, and large shrinkage rate. It can not only meet the function of transparent display of goods, but also save costs, gradually replacing traditional carton packaging. It has been widely used in the packaging of various products such as food, medicine, disinfection tableware, stationery and sports supplies, craft gifts, printed matter, hardware and plastic products, telephones, electronic appliances, etc., especially in the packaging of irregular shapes. Be applicable. At present, similar products on the market require a shrinking furnace temperature of 150°C to shrink, and the shrinkage rate is 60%-65%, and the shrinkage speed is slow, the shrinkage time is long, ...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/06B32B27/32C08L23/06C08L23/12C08L23/08
Inventor 刘元发
Owner 深圳市致新包装有限公司
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