PE wrapping film and preparation method thereof

A wrapping film, linear low-density technology, applied in the field of PE wrapping film and its preparation, can solve the problems of low tensile strength and tear strength of PE wrapping film, improve processing performance, improve mixing uniformity, and improve tensile strength. The effect of tensile strength

Inactive Publication Date: 2020-04-24
郑州市祥泰塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the first purpose of the present invention is to provide a PE stretch film to solve the problems of low tensile strength and tear resistance of the PE stretch film in the prior art

Method used

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  • PE wrapping film and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0041] The PE stretch film of this embodiment is made of the following raw materials: 60 kg of linear low density polyethylene, 5 kg of metallocene linear low density polyethylene, 0.3 kg of sodium methyl silanolate, 0.3 kg of sodium alkylbenzene sulfonate, and nanometer calcium carbonate 0.2kg, carboxymethyl cellulose 0.3kg, methyl cellulose 0.2kg, polystyrene caprolactam 0.3kg, polythiazole 0.3kg, nano titanium dioxide 0.4kg.

[0042] The preparation method of the PE stretch film of the present embodiment comprises the following steps:

[0043] a. Add the materials into the mixer according to the formula, and stir and mix for 50 minutes at a speed of 500r / min to obtain the mixture;

[0044] b. Put the mixture in step a into the extruder to heat, melt and extrude at high temperature. The temperature of the first section of the extruder is 150°C, the temperature of the second section is 160°C, and the temperature of the third section is 180°C to obtain a molten body;

[0045...

Embodiment 2

[0048] The PE stretch film of this embodiment is made of the following raw materials: 70 kg of linear low density polyethylene, 6 kg of metallocene linear low density polyethylene, 0.8 kg of sodium methyl silanolate, 0.8 kg of sodium alkylbenzene sulfonate, and nanometer calcium carbonate 0.4kg, phosphocellulose 0.8kg, carboxymethylcellulose 0.8kg, methylcellulose 0.4kg, polystyrene caprolactam 0.5kg, polythiazole 0.5kg, nano-titanium dioxide 0.5kg.

[0049] The preparation method of the PE stretch film of the present embodiment comprises the following steps:

[0050] a. Add the materials into the mixer according to the formula, and stir and mix for 20 minutes at a speed of 550r / min to obtain the mixture; b. Put the mixture in step a into the extruder to heat and melt and extrude at high temperature. The first step of the extruder The temperature of the first stage is 160°C, the temperature of the second stage is 170°C, and the temperature of the third stage is 180°C to obtain...

Embodiment 3

[0054] The PE stretch film of this embodiment is made of the following raw materials: 80 kg of linear low density polyethylene, 8 kg of metallocene linear low density polyethylene, 1 kg of sodium methyl siliconate, 1 kg of sodium alkylbenzene sulfonate, 1 kg of nanometer calcium carbonate, Phosphocellulose 1kg, carboxymethylcellulose 1kg, methylcellulose 1kg, polystyrene caprolactam 0.8kg, polythiazole 0.8kg, nano-titanium dioxide 0.4kg.

[0055] The preparation method of the PE stretch film of the present embodiment comprises the following steps:

[0056] a. Add the materials into the mixer according to the formula, and stir and mix at a speed of 600r / min for 10 minutes to obtain the mixture; b. Put the mixture in step a into the extruder to heat and melt and extrude at high temperature. The first step of the extruder The temperature of the first stage is 155°C, the temperature of the second stage is 165°C, and the temperature of the third stage is 170°C to obtain a melt;

...

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Abstract

The invention discloses a PE wrapping film and a preparation method thereof, which belong to the technical field of packaging materials. The PE wrapping film is mainly prepared from the following rawmaterials in parts by weight: 65-140 parts of low-density polyethylene, 0.8-7 parts of a toughening agent and 0.5-5 parts of cellulose; wherein the low-density polyethylene comprises linear low-density polyethylene and metallocene linear low-density polyethylene in a mass ratio of (60-120): (5-20); the toughening agent is one or more of sodium methylsilanolate, sodium alkyl benzene sulfonate and nano calcium carbonate; wherein the cellulose is one or more of cellulose phosphate, carboxymethyl cellulose and methyl cellulose. According to the PE wrapping film, the linear low-density polyethyleneand the metallocene linear low-density polyethylene are adopted as raw materials, and the flexibilizer and the cellulose are added, so that the tensile strength and the tearing strength of the PE wrapping film are improved.

Description

technical field [0001] The invention relates to the technical field of packaging materials, more specifically, it relates to a PE stretch film and a preparation method thereof. Background technique [0002] Stretch film, also known as stretch film and heat shrinkable film, has good tensile, puncture and tear resistance, good self-adhesiveness and high elongation, and is widely used in the packaging field. At present, stretch film is mainly used in the sales and transportation of various products. Its function is to stabilize, cover and protect products. Therefore, stretch film must have high puncture resistance, good shrinkage and shrinkage stress. [0003] Polyethylene stretch film is a kind of stretch film with good toughness. The material has good flexibility, strong tear resistance, is not easy to break, is not afraid of moisture, and has a large shrinkage rate. It is widely used in the overall packaging of various products. Most of the existing stretch films are made o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08L1/28C08L1/16C08L23/12C08L23/20C08L79/04C08L39/04C08K13/02C08K5/5419C08K5/42C08K3/26C08K3/22C08J5/18
CPCC08J5/18C08J2323/08C08J2423/08C08J2401/28C08J2401/16C08J2423/12C08J2423/20C08J2479/04C08J2439/04C08K13/02C08K5/5419C08K5/42C08K2003/265C08K2201/011C08K2003/2241
Inventor 雷彦民陶丽辉王旭坡
Owner 郑州市祥泰塑业有限公司
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