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Machining process of polypropylene

A processing technology and polypropylene technology, applied in the field of polypropylene processing, can solve the problems of non-compliance with energy saving and emission reduction, scientific and environmental protection, raw materials producing polluting gases, affecting the quality of polypropylene, etc., saving manpower and material resources, reducing production costs, The effect of improving utilization

Pending Publication Date: 2020-10-13
黄纯干
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the processing technology of recycled polypropylene, when the recycled material and the new material are mixed, the quality of the final polypropylene is affected due to the difference in melting temperature and molecular mass difference between the two.
Moreover, in the process of processing, especially in the process of heating, high-temperature melting will cause the raw materials to produce polluting gases, which is not in line with the purpose of energy saving, emission reduction, scientific environmental protection
[0005] In the polypropylene processing technology of the traditional technology, such as the Chinese patent application document (publication number CN1935889A) discloses the special material for drawing polypropylene woven bag and its preparation method, after mixing the polypropylene raw materials, heating, melting and kneading in the extruder Extrusion granulation, because the melting point of the material in the raw material is high, the combustion temperature is high, the time is long, and the energy consumption is high when the patent is heated, melted and kneaded, which will lead to a series of environmental pollution problems

Method used

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  • Machining process of polypropylene
  • Machining process of polypropylene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of polypropylene processing technology, comprises the steps:

[0027] The polypropylene plastic is crushed into a coarse powder with a particle size of 5-10 cm, and then coarsely crushed into a fine powder with a particle size of 0.5-1.0 cm.

[0028] The fine powder was extruded into a plastic mass at 120°C.

[0029] At room temperature, cut the plastic ball into powder particles with a particle size of 0.3-0.5cm in a cutting machine, blow and spray water at the same time, and cool the powder particles to 65-75°C; then send the powder particles to the air-drying tank for drying Cool down to 20-30°C.

[0030] Finally, the air-dried particles are subjected to wire drawing.

Embodiment 2

[0032] A kind of polypropylene processing technology, comprises the steps:

[0033] Crushing the recycled polypropylene product after impurity removal into a coarse powder with a particle size of 5-10 cm, and then coarsely crushing it into a fine powder with a particle size of 0.5-1.0 cm.

[0034] The fine powder was extruded into a plastic mass at 120°C.

[0035] At room temperature, cut the plastic ball into powder particles with a particle size of 0.3-0.5cm in a cutting machine, blow and spray water at the same time, and cool the powder particles to 65-75°C; then send the powder particles to the air-drying tank for drying Cool down to 20-30°C.

[0036] Finally, the air-dried particles are subjected to wire drawing.

Embodiment 3

[0038] Mix the recycled polypropylene products and polypropylene plastics after removal of impurities at a mass ratio of 0.3:1, crush them into coarse powders with a particle size of 5-10 cm, and then coarsely crush them into fine powders with a particle size of 0.5-1.0 cm.

[0039] The fine powder was extruded into a plastic mass at 120°C.

[0040] At room temperature, cut the plastic ball into powder particles with a particle size of 0.3-0.5cm in a cutting machine, blow and spray water at the same time, and cool the powder particles to 65-75°C; then send the powder particles to the air-drying tank for drying Cool down to 20-30°C.

[0041] Finally, the air-dried particles are subjected to wire drawing.

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Abstract

The invention relates to a machining process of polypropylene, and belongs to the field of polypropylene machining. Polypropylene raw materials are secondarily crushed, the grain size of the crushed polypropylene is small, the polypropylene can be clustered only at a low heating temperature, the energy consumption is controlled in the extrusion process, the volatility of the raw materials in the production process is guaranteed, meanwhile, smoke and abnormal smells are avoided, energy saving and emission reduction are achieved, and the environmental protection level is greatly improved. Meanwhile, the machining process is easy to operate, the utilization rate of waste polypropylene products is increased, manpower and material resources are saved, and the production cost is reduced.

Description

[0001] field of invention [0002] The invention relates to a polypropylene processing technology, which belongs to the field of polypropylene processing. Background technique [0003] As the awareness of environmental protection is deeply rooted in the hearts of the people, garbage classification is becoming more and more perfect, and the recycling and utilization of plastic bags are also on the agenda. We generate plastic waste all the time in our daily life, and all kinds of environmental pollution caused by this plastic waste should be paid more attention to. [0004] Polypropylene accounts for a large proportion in the application of plastic bags. The recycling of polypropylene plastic bags can not only protect the environment but also reduce production costs. The main source of recycled polypropylene is the waste and secondary recycled polypropylene products in the production process of polypropylene plastic bags. However, in the processing technology of recycled polyp...

Claims

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Application Information

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IPC IPC(8): B29B9/06B29B9/16B29B17/00B29B17/04B29K23/00
CPCB29B9/06B29B9/16B29B17/00B29B17/0412B29K2023/12Y02W30/52Y02W30/62
Inventor 黄纯干
Owner 黄纯干