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PE low-temperature packaging film, preparation method and applications thereof

A packaging film and low temperature technology, which is applied in the field of PE low temperature packaging film and its preparation, can solve the problems of low packaging production efficiency, reduced product strength, and high energy consumption of packaging equipment, and can be widely used in the market, reduce heat sealing temperature, and avoid disadvantages. effect of influence

Active Publication Date: 2020-04-17
福建富一锦科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the anti-opening agent makes the packaging film easy to tear, it will reduce the strength of the product, and because the melting temperature of the anti-opening agent is generally higher than that of the packaging film base material, the hot air temperature of the flexible packaging containing the anti-opening agent is relatively high, which makes the packaging production efficiency Low, low production capacity, high energy consumption of packaging equipment

Method used

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  • PE low-temperature packaging film, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Prepare as follows:

[0027] Step 1: Weigh each raw material according to Table 1, and mix each raw material according to the respective formulas of the inner layer, the middle layer and the outer layer to obtain the inner layer mixture, the middle layer mixture and the outer layer mixture respectively;

[0028] Step 2: Put the inner layer compound, the middle layer compound and the outer layer compound into the three hoppers of the extruder respectively, and perform three-layer co-extrusion blown film processing. The screw temperature of the blow molding machine is 165 ° C, and melt extrusion to Inflate the die at 190°C to obtain a film;

[0029] Step 3: Cool the film, pull it with wheels, corona, cut the edge, and wind it up to obtain the PE low-temperature packaging film with a thickness of 25 μm, and the ratio of the thickness of the inner layer, the middle layer and the outer layer is 3:2:1 .

[0030] Table 1 raw material consumption table

[0031]

Embodiment 2

[0033] Prepare as follows:

[0034] Step 1: Weigh each raw material according to Table 1, and mix each raw material according to the respective formulas of the inner layer, the middle layer and the outer layer to obtain the inner layer mixture, the middle layer mixture and the outer layer mixture respectively;

[0035] Step 2: Add the inner layer compound, the middle layer compound and the outer layer compound into the three hoppers of the extruder respectively, and perform three-layer co-extrusion blown film processing. The screw temperature of the blow molding machine is 195 ° C. Inflate the die at 185°C to obtain a film;

[0036] Step 3: Cool the film, pull the wheel, corona, cut the edge, and wind up to obtain the PE low-temperature packaging film with a thickness of 15 μm, and the ratio of the thickness of the inner layer, the middle layer and the outer layer is 2:2:1 .

Embodiment 3

[0038] Prepare as follows:

[0039] Step 1: Weigh each raw material according to Table 1, and mix each raw material according to the respective formulas of the inner layer, the middle layer and the outer layer to obtain the inner layer mixture, the middle layer mixture and the outer layer mixture respectively;

[0040] Step 2: Add the inner layer compound, the middle layer compound and the outer layer compound respectively into the three hoppers of the extruder for three-layer co-extrusion blown film processing. Inflate the die at 195°C to obtain a film;

[0041] Step 3: Cool the film, pull it with wheels, corona, cut the edge, and wind it up to obtain the PE low-temperature packaging film with a thickness of 30 μm, and the ratio of the thickness of the inner layer, the middle layer and the outer layer is 2:3:1 .

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Abstract

The invention relates to a PE low-temperature packaging film, a preparation method and applications thereof. The PE low-temperature packaging film comprises an inner layer, a middle layer and an outerlayer, wherein the inner layer, the middle layer and the outer layer are sequentially stacked, the inner layer is prepared from the following components by weight: 20-40 parts of metallocene polyethylene, 10-30 parts of low-density polyethylene and 40-60 parts of linear polyethylene, the middle layer is prepared from the following components in parts by weight: 10 to 30 parts of low-density polyethylene, 60 to 80 parts of linear polyethylene and 5 to 15 parts of metallocene polyethylene, and the outer layer comprises the following components in parts by weight: 5-30 parts of low-density polyethylene, 5-10 parts of polybutylene and 60-90 parts of linear polyethylene. The heat sealing temperature of the PE low-temperature packaging film is 70-80 DEG C, the tensile strength of the PE low-temperature packaging film is 40-50 N / mm, and the PE low-temperature packaging film has good opening performance.

Description

technical field [0001] The invention relates to the technical field of plastic flexible packaging, in particular to a PE low-temperature packaging film and its preparation method and application. Background technique [0002] In order to make the product packaging film easy to open, anti-blocking agents are usually introduced into the formula. Anti-blocking agents are divided into organic anti-blocking agents and inorganic anti-blocking agents. The organic anti-blocking agents are mainly oleic acid amide and erucamide, and the inorganic anti-blocking agents mainly include Talc powder, diatomaceous earth, silicon dioxide, etc., among which silicon dioxide is used in the largest amount. Although the anti-opening agent makes the packaging film easy to tear, it will reduce the strength of the product, and because the melting temperature of the anti-opening agent is generally higher than that of the packaging film base material, the hot air temperature of the flexible packaging c...

Claims

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Application Information

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IPC IPC(8): B32B27/08B32B27/06B32B27/32C08L23/06C08J5/18B29C48/08B29C48/21
CPCB32B27/08B32B27/327B32B27/32C08J5/18B29C48/08B29C48/21C08J2323/06C08J2423/06B32B2439/00B32B2307/31B32B2307/54
Inventor 黄作团黄家辉
Owner 福建富一锦科技有限公司