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Preparation method for environmental-friendly film

A kind of thin film, environmental protection technology, applied in the field of preparation of environmental protection film, can solve the problems such as whether the equipment technology can meet the requirements, the production conditions are not clear, the effect cannot be guaranteed, etc., and achieve low cost, enhanced heat resistance, wear resistance and toughness enhanced effect

Inactive Publication Date: 2018-07-06
TIANJIN KAIXUAN PLASTIC PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Plastic film is a common daily necessities for people nowadays. Plastic film has the advantages of good transparency, good moisture resistance, excellent heat resistance, convenient use, and low price. It is widely used in various industries, but the plastic film currently on the market is mainly based on Polyethylene plastic film is mainly used, which brings serious pollution to the environment. It is also called "white pollution" because of its refractory property, and it will release harmful gas itself, which poses a threat to people's health. The invention discloses a The production process of plastic film, which uses biodegradable resin as the main raw material, mixes processing aids, biodegradation aids, dispersion aids, and photosensitizers in a certain proportion, and processes them into plastic films under certain conditions. The film can be degraded by microorganisms, and the degradation speed is faster under the condition of light, which eliminates the environmental pollution caused by plastic film, but its production conditions are not clear, whether the equipment technology can meet the requirements is unclear, and whether the production can achieve the expected effect is uncertain ensure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of preparation method of environment-friendly thin film of the present embodiment is characterized in that, its process step is as follows:

[0020] (1) Raw material screening: plastic granules are screened through 80 mesh sieves, the plastic granules are polylactic acid granules, the size of polylactic acid plastic granules is moderate, and increasing the contact area is conducive to the melting of the granules in the next step, and the selection of polylactic acid materials, Can be 100% biodegradable and reduce environmental pollution;

[0021] (2) Melting: Add the target particles screened in step (1) into the reactor, the temperature is controlled at 170° C., and the target particles are melted into a molten state under stirring;

[0022] (3) Modification: Add the modified material to the molten liquid in step (2), and mix evenly under the condition of vacuum stirring. The modified material is a mixture of magnesium aluminum hydrotalcite, ammonium polyphospha...

Embodiment 2

[0028] A kind of preparation method of environment-friendly thin film of the present embodiment is characterized in that, its process step is as follows:

[0029] (1) Raw material screening: plastic particles are screened through a 150-mesh sieve, and the plastic particles are polylactic acid particles. The size of the polylactic acid plastic particles is moderate, and increasing the contact area is conducive to the melting of the particles in the next step, and the selection of polylactic acid materials, Can be 100% biodegradable and reduce environmental pollution;

[0030] (2) Melting: Add the target particles screened in step (1) into the reactor, the temperature is controlled at 170° C., and the target particles are melted into a molten state under stirring;

[0031] (3) Modification: Add the modified material to the molten liquid in step (2), and mix evenly under the condition of vacuum stirring. The modified material is a mixture of magnesium aluminum hydrotalcite, ammon...

Embodiment 3

[0037] A kind of preparation method of environment-friendly thin film of the present embodiment is characterized in that, its process step is as follows:

[0038] (1) Raw material screening: plastic particles are screened through a 200-mesh sieve, and the plastic particles are polylactic acid particles. The size of the polylactic acid plastic particles is moderate, and increasing the contact area is conducive to the melting of the particles in the next step, and the selection of the polylactic acid material, Can be 100% biodegradable and reduce environmental pollution;

[0039] (2) Melting: Add the target particles screened in step (1) into the reactor, the temperature is controlled at 170° C., and the target particles are melted into a molten state under stirring;

[0040] (3) Modification: Add the modified material to the molten liquid in step (2), and mix evenly under the condition of vacuum stirring. The modified material is a mixture of magnesium aluminum hydrotalcite, am...

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PUM

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Abstract

The invention relates to a production process for plastics and rubber, in particular to a preparation method for an environmental-friendly film. The preparation method is characterized by comprising the following processing steps of (1) screening raw materials, specifically, screening plastic particles through a 20-200 mesh target sieve, wherein the plastic particles are polylactic acid particles;(2) carrying out melting, specifically, adding the target particles screened in the step (1) into a reactor, controlling the temperature to be 170-190 DEG C and melting the target particles into a molten state under the condition of stirring; (3) carrying out modifying, , specifically, adding a modified material into molten liquid obtained in the step (2) and carrying out uniform mixing under thecondition of vacuum stirring, wherein the modified material is a mixture of magnesium-aluminum hydrotalcite, ammonium polyphosphate and cobalt powder, wherein the mixing ratio of magnesium-aluminum hydrotalcite to ammonium polyphosphate to the cobalt powder is 3:2:2; (4) carrying out extrusion casting, specifically, extruding mixed molten liquid obtained in the step (3) into a melt film through aT-shaped opening film casting machine; and (5) carrying out cooling, specifically, tightly attaching the melt film extruded in the step (4) to a cooling roller so as to cool the melt film.

Description

technical field [0001] The production process of plastic rubber involved in the present invention, in particular relates to a preparation method of an environmentally friendly film. Background technique [0002] Plastic film is a common daily necessities for people nowadays. Plastic film has the advantages of good transparency, good moisture resistance, excellent heat resistance, convenient use, and low price. It is widely used in various industries, but the plastic film currently on the market is mainly based on Polyethylene plastic film is mainly used, which brings serious pollution to the environment. It is also called "white pollution" because of its refractory property, and it will release harmful gas itself, which poses a threat to people's health. The invention discloses a The production process of plastic film, which uses biodegradable resin as the main raw material, mixes processing aids, biodegradation aids, dispersion aids, and photosensitizers in a certain propor...

Claims

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Application Information

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IPC IPC(8): B29C47/92B29C47/14B29C47/88B29L7/00B29C48/305B29C48/92
CPCB29C48/30B29C48/305B29C48/9135B29C48/92B29C2948/92152B29C2948/92704B29L2007/00
Inventor 郝永强
Owner TIANJIN KAIXUAN PLASTIC PROD