Stretch-proof polyethylene plastic film for packaging and preparation method

A technology of plastic film and polyethylene, applied in the direction of conjugated synthetic polymer man-made filaments, etc., can solve the problems of difficult application of materials in various fields, poor impact resistance of polyethylene, easy aging, etc., and achieve increased rigidity and excellent toughness. , the effect of increasing the mechanical properties

Inactive Publication Date: 2021-01-15
崔伟荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyethylene has poor impact resistance and is easy to age, making it difficult for materials made of polyethylene to be used in various fields. Therefore, the development of stretch-resistant plastics has an important impact on the quality of product packaging

Method used

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  • Stretch-proof polyethylene plastic film for packaging and preparation method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0030] A stretch-resistant polyethylene plastic film for packaging, comprising the following raw materials in parts by weight: 35 parts of modified polyethylene, 15 parts of toughened filling fiber, 3 parts of calcium zinc heat stabilizer, 1 part of antioxidant 1010, 10 parts of polystyrene Dimethicone;

[0031] The stretch-resistant polyethylene plastic film for packaging is made by the following method:

[0032] The first step is to add modified polyethylene, toughened filler fiber, calcium zinc heat stabilizer, antioxidant 1010 and polydimethylsiloxane into a high-speed mixer, and stir at a constant speed of 800r / min for 30min to prepare got the mixture;

[0033] In the second step, the mixture prepared in the first step is added to the twin-screw extruder, cast at a T-shaped die head at 200 ° C, and quenched by a casting cooling roll with a temperature of 20 ° C to form a film, and then heat Heating to 90° C. in a stretching box, and stretching and molding at a stretchin...

Embodiment 2

[0043] A stretch-resistant polyethylene plastic film for packaging, comprising the following raw materials in parts by weight: 40 parts of modified polyethylene, 20 parts of toughened filling fiber, 5 parts of calcium zinc heat stabilizer, 2 parts of antioxidant 1010, 12 parts of polystyrene Dimethicone;

[0044] The stretch-resistant polyethylene plastic film for packaging is made by the following method:

[0045] The first step is to add modified polyethylene, toughened filler fiber, calcium zinc heat stabilizer, antioxidant 1010 and polydimethylsiloxane into a high-speed mixer, and stir at a constant speed of 800r / min for 30min to prepare got the mixture;

[0046] In the second step, the mixture prepared in the first step is added to the twin-screw extruder, cast at a T-shaped die head at 200 ° C, and quenched by a casting cooling roll with a temperature of 20 ° C to form a film, and then heat Heating to 90° C. in a stretching box, and stretching and molding at a stretchi...

Embodiment 3

[0056] A stretch-resistant polyethylene plastic film for packaging, comprising the following raw materials in parts by weight: 50 parts of modified polyethylene, 25 parts of toughened filling fiber, 6 parts of calcium zinc heat stabilizer, 2 parts of antioxidant 1010, 14 parts of polystyrene Dimethicone;

[0057] The stretch-resistant polyethylene plastic film for packaging is made by the following method:

[0058] The first step is to add modified polyethylene, toughened filler fiber, calcium zinc heat stabilizer, antioxidant 1010 and polydimethylsiloxane into a high-speed mixer, and stir at a constant speed of 800r / min for 30min to prepare got the mixture;

[0059] In the second step, the mixture prepared in the first step is added to the twin-screw extruder, cast at a T-shaped die head at 200 ° C, and quenched by a casting cooling roll with a temperature of 20 ° C to form a film, and then heat Heating to 90° C. in a stretching box, and stretching and molding at a stretchi...

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Abstract

The invention discloses a stretch-proof polyethylene plastic film for packaging and a preparation method. The stretch-proof polyethylene plastic film is prepared from the following raw materials in parts by weight: 35-55 parts of modified polyethylene, 15-30 parts of toughened filling fibers, 3-8 parts of a calcium-zinc heat stabilizer, 1-3 parts of an antioxidant and 10-15 parts of polydimethylsiloxane. The preparation method comprises the following steps of 1, adding modified polyethylene, toughened filling fibers, a calcium-zinc heat stabilizer, an antioxidant and polydimethylsiloxane intoa high-speed mixer, and stirring at a constant speed of 800-1000 r / min for 30min to obtain a mixture. A plurality of fillers in the modified polyethylene are synergistically dispersed in the polyethylene, and the first nano filler particles and the second filler particles can enhance the binding force with an organic phase interface, absorb tensile stress when the plastic is stretched, improve thetoughness of the plastic, and endow the finally prepared plastic with excellent tensile resistance.

Description

technical field [0001] The invention belongs to the technical field of plastic film preparation, in particular to a stretch-resistant polyethylene plastic film for packaging and a preparation method. Background technique [0002] Polyethylene film is a colorless, tasteless, odorless, translucent, non-toxic insulating material. It is widely used in packaging bags, food bags, and various containers. Polyethylene film has the characteristics of moisture resistance and low moisture permeability, but the existing polyethylene film for packaging needs to be improved in resilience and tensile strength. Polyethylene has poor impact resistance and is easy to age, making it difficult for materials made of polyethylene to be used in various fields. Therefore, the development of stretch-resistant plastics has an important impact on the quality of product packaging. [0003] Chinese invention patent CN110078960A discloses a stretch-resistant polyethylene plastic film for packaging and a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08J9/10C08L23/06C08L1/04C08L83/04C08L75/08C08L63/00C08L91/06C08K13/06C08K9/04C08K3/26C08K3/08C08K5/09C08K5/14D01F8/16
CPCC08J5/18C08J9/0061C08J9/008C08J9/0085C08J9/009C08J9/0095C08J9/103C08J2203/04C08J2323/06C08J2401/04C08J2463/00C08J2475/08C08J2483/04D01F8/16
Inventor 崔伟荣
Owner 崔伟荣
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