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Production process of high-extensibility plastic packaging film

A technology with high extensibility and production process, applied in the field of packaging film, it can solve the problems of unguaranteed mechanical properties, uncontrollable degradation and high cost of the film, to enhance mechanical properties and chemical stability, improve anti-ultraviolet aging ability, and improve resistance to aging. The effect of thermal properties

Active Publication Date: 2021-08-17
ANHUI SHUNTONG PACKAGING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In the prior art, bio-based materials are directly blended with plastics to prepare films, which has high cost, incomplete degradation, and uncontrollable degradation; adding a large amount of biomass materials to achieve a high degradation rate, but the mechanical properties of the film cannot be guaranteed , the remaining plastics are difficult to continue to degrade, and the undegraded fragments will still cause environmental pollution

Method used

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  • Production process of high-extensibility plastic packaging film
  • Production process of high-extensibility plastic packaging film
  • Production process of high-extensibility plastic packaging film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Prepare the modifier:

[0036] Step S21, mix cyanuric chloride and acetone, then add ethanolamine solution dropwise at a temperature of 0°C, control the dropping rate to 1 drop / second, keep the temperature constant after the dropping, continue stirring for 2 hours, and finish stirring Afterwards, aqueous sodium hydroxide solution was added dropwise, and post-treatment was carried out. The process of post-treatment was as follows: the obtained reaction solution was suction-filtered and washed to obtain intermediate 1;

[0037] Step S22, at a temperature of 50°C, add a mixed reagent to the intermediate 1, react at this temperature for 4 hours, and perform post-treatment after the reaction. The post-treatment process is: suction filter and wash the obtained reaction solution After obtaining intermediate 2;

[0038] Step S23, mixing chlorinated trimellitic anhydride and pyridine, when a white precipitate is produced, adding intermediate 2 and tetrahydrofuran, stirring and ...

Embodiment 2

[0041] Prepare the modifier:

[0042] Step S21, mix cyanuric chloride and acetone, then add ethanolamine solution dropwise at a temperature of 10°C, control the dropping rate to 2 drops / second, keep the temperature constant after the dropping, continue stirring for 3 hours, and finish stirring Afterwards, aqueous sodium hydroxide solution was added dropwise, and post-treatment was carried out. The process of post-treatment was as follows: the obtained reaction solution was suction-filtered and washed to obtain intermediate 1;

[0043] Step S22, at a temperature of 50°C, add a mixed reagent to the intermediate 1, react at this temperature for 4 hours, and perform post-treatment after the reaction. The post-treatment process is: suction filter and wash the obtained reaction solution After obtaining intermediate 2;

[0044]Step S23, mixing chlorinated trimellitic anhydride and pyridine, when a white precipitate is produced, adding intermediate 2 and tetrahydrofuran, stirring and...

Embodiment 3

[0047] Preparation of auxiliary components:

[0048] Step S31, mixing phenol, phosphorus oxychloride and anhydrous magnesium chloride, then reacting at 75°C for 2h, then raising the temperature to 100°C, and reacting for 20h, after the reaction, stop heating and cool to room temperature to obtain solution a;

[0049] Step S32, at a temperature of 8°C, mix methanol and triethylamine, then dropwise add solution a, after the dropwise addition, raise the temperature to 50°C, react for 10 hours, and after the reaction, lower the temperature to room temperature, Carry out post-processing, the process of post-processing is: extracting with deionized water and ethyl acetate, drying the organic phase with anhydrous magnesium sulfate, concentrating under reduced pressure after drying, removing the solvent to obtain auxiliary components.

[0050] Wherein, the mass ratio of phenol, phosphorus oxychloride and anhydrous magnesium chloride in step S31 is 9.4:7.21:0.1; the mass ratio of metha...

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Abstract

The invention discloses a production process of a high-extensibility plastic packaging film, and belongs to the technical field of packaging films, and the production process comprises the following steps: 1, weighing raw materials in parts by weight; 2, drying the raw materials in a vacuum oven at 45 DEG C, then mixing, carrying out extrusion granulation in a twin-screw extruder at the temperature of 160 DEG C, blowing into cylindrical film bubbles by air compression, carrying out blow molding film forming in a film blowing auxiliary machine to form a film product, and finally cutting, separately rolling and packaging to obtain the high-extensibility plastic packaging film. The modified polypropylene carbonate is added, the modified polypropylene carbonate is obtained by mixing and extruding polypropylene carbonate, a modifier and auxiliary components, and the modifier plays a coupling role in a reaction process, so that a three-dimensional network structure is formed, and the mechanical property and chemical stability of the film are enhanced.

Description

technical field [0001] The invention belongs to the technical field of packaging films, and in particular relates to a production process of highly extensible plastic packaging films. Background technique [0002] Plastic packaging and plastic packaging products have the advantages of a wide variety, light weight and beauty, and are not easy to break. The development speed far exceeds that of traditional paper, metal, glass and other packaging materials, and their market share is increasing. Composite plastic flexible packaging has been widely used in daily life, food, medicine, chemical industry and other fields, and has been developed rapidly and widely used. But while this brings convenience to people, it has also brought increasingly serious environmental pollution problems. A large number of waste plastic films are not easily degraded in nature, causing great harm to the ecological environment. Among them, biodegradable plastic film refers to a polymer material that c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L69/00C08K5/3492C08K5/52
CPCC08J5/18C08J2369/00C08K5/3492C08K5/52
Inventor 李东霖李泽芬张腾
Owner ANHUI SHUNTONG PACKAGING MATERIAL
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