Integrated molding process of EPP product with plasticized dermatoglyph layer

A molding process and skin texture technology, which is applied in the field of foam plastic manufacturing, can solve the problems of complex operation processing costs and low rate of high-quality products, and achieve the effects of reducing the precision of the processing process, improving the rate of high-quality products, and simplifying the production process

Inactive Publication Date: 2019-02-22
四川诺阳汽车部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide an integral molding process of EPP products with a plasticized leather layer to solve the problem of forming a

Method used

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  • Integrated molding process of EPP product with plasticized dermatoglyph layer
  • Integrated molding process of EPP product with plasticized dermatoglyph layer

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Experimental program
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Embodiment

[0027] An EPP product integral molding process with a plasticized leather layer, comprising the following steps:

[0028] A: Raw material pretreatment, in the particle pre-pressing equipment, the EPP particles are expanded and foamed with segmented pressure; the segmented pressure is six-stage pressure, which are: pre-pressing process 1, the pressure is 0.27-0.34bar , pressing time is 28-36min; pre-pressing process 2, its pressure is 3.8-4.7bar, pressing time is 7.7-8.2h; pre-pressing process 3, its pressure is 3.8-4.7bar, pressing time is 27-38min; Pressing process 4, the pressure is 2.6-3.2bar, and the pressing time is 28-33min; pre-pressing process 5, the pressure is 1.8-2.2bar, and the pressing time is 28-32min; pre-pressing process 6, the pressure is 1.8-2.2 bar, the pressing time is 98.5-101h; six stages of pressure are set in the particle pre-pressing equipment, combined with the pressing time of each stage of pressure is to make the EPP particles fully expand and foam ...

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Abstract

The invention discloses an integrated molding process of an EPP product with a plasticized dermatoglyph layer. The integrated molding process comprises the following steps of raw material pre-treatment, feeding, preheating, primary forming, dermatoglyph layer plasticizing, cooling, demolding and the like. According to dermatoglyph layer plasticizing, 3D dermatoglyph laser processing is carried outon the inner wall of a cavity of a plasticized dermatoglyph forming mold, dermatoglyph is evenly distributed on the inner wall of the cavity of the plasticized dermatoglyph forming mold, and the interior of the cavity of the plasticized dermatoglyph forming mold is pressurized to 180 bar to 200 bar; and meanwhile, a female die and a male die are continuously subjected to many times of shock heating and shock cooling adjustment through temperature adjusting equipment, so that the molded EPP product is plasticized to form the plasticized dermatoglyph layer. Compared with the prior art, the required processing process precision of a product due to mold cooperation is reduced, the production process is simplified, production cost is reduced, and the high quality rate of the product is increased; and meanwhile, the surface harness and strength of the product are improved, the wear resisting and scratching performance of the product is improved, and the buffering resisting performance of the product is improved.

Description

technical field [0001] The invention relates to the technical field of foam plastic manufacturing, in particular to an integral molding process of an EPP product with a plasticized leather layer. Background technique [0002] EPP (polypropylene plastic foam material) is a high-performance high-crystalline polymer / gas composite material. With its unique and superior performance, it has become the fastest growing environmentally friendly new pressure-resistant cushioning insulation material; EPP products have Excellent shock resistance and energy absorption performance, high recovery rate after deformation, good heat resistance, chemical resistance, oil resistance and heat insulation. In addition, its light weight can greatly reduce the weight of items. [0003] Therefore, EPP is widely used in more and more fields, such as IT products, electronic communication equipment, liquid crystal displays, plasma color TVs, precision electronic components and precision instruments, etc....

Claims

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Application Information

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IPC IPC(8): B29C44/08B29C44/60
CPCB29C44/08B29C44/60
Inventor 程建军邓勇
Owner 四川诺阳汽车部件有限公司
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