A method for reusing the leftover material of PVC slush plastic skin of automobile instrument panel
A technology for automobile instrument panels and leftover materials, applied in plastic recycling, recycling technology, mechanical material recycling, etc., can solve the problems of shortening damage, affecting the comprehensive performance of skin, molecular weight loss, etc., to reduce environmental pollution, improve The effect of utilizing value and reducing import demand
Inactive Publication Date: 2019-09-03
刘子睿
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Problems solved by technology
However, the difficulty in the field of slush molding is that the PVC raw material of the PVC slush molding skin is a very fine powder particle, and it is difficult to achieve a granular state by conventional crushing. The entanglement acts as a physical cross-linking point. During the pulverization process of PVC slush plastic skin scraps, the long polymer chains will be destroyed and shortened. It has been reported that the molecular weight of polymers will lose about 20% during the pulverization process. , which will affect the comprehensive properties of the epidermis
At present, in the field of slush molding of instrument panels, there are no relevant reports on the recycling of PVC slush plastic skin scraps
Method used
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[0032] The present invention is described in detail below in conjunction with accompanying drawing:
[0033] refer to figure 1 , a kind of automobile instrument panel PVC slush-plastic epidermis scrap recycling method, comprises the following steps:
[0034] Step 1: Clean up waste.
[0035] In order to avoid the influence of potential grease and impurities in the leftovers of the PVC slush-plastic skin to be crushed on the appearance of the reshaped PVC slush-plastic skin, first use industrial alcohol to wipe the leftovers of the PVC slush-plastic skin to be crushed to remove grease and impurities ;
[0036] Step 2: Shred the scrap.
[0037] Use a shredder to shred the scraps of PVC slush-plastic skin corners to be shredded at room temperature. In order to ensure the efficiency of subsequent refrigerated shredding, the shredded particle size is not greater than 20mm;
[0038] Step 3: Refrigerate at low temperature.
[0039] Put the shredded particles in step 2 into the re...
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Abstract
The invention belongs to the technical field of an automobile instrument panel, and relates to a reutilization method of automobile instrument panel PVC (polyvinyl chloride) slush molding skin, in particular to a reutilization processing method aiming at leftover materials generated in the slush molding forming process. The method comprises the following steps of 1, wiping away oil stains; 2, performing tearing at the normal temperature; 3, performing liquid nitrogen refrigeration and cold storage; 4, performing crushing; 5, performing filtering by a sieve screen to obtain the PVC slush molding reutilization raw materials; 6, proportionally mixing the crushed PVC slush molding reutilization raw materials with the slush molding raw materials to form mixed slush molding raw materials. Compared with the existing processing mode, the method provided by the invention has the advantages that on one hand, the environment pollution can be can be reduced; on the other hand, the utilization value of the skin leftover materials can be sufficiently improved; the import requirements of the slush molding raw materials in the field of automobile instrument panel are reduced.
Description
technical field [0001] The invention belongs to the technical field of automobile instrument panels, and relates to a method for reusing a PVC slush-molded skin, in particular to a processing method for re-utilizing leftovers produced in the slush-molding process. Background technique [0002] In recent years, with the rapid development of my country's automobile industry and the improvement of user requirements, the manufacturing process of automobile instrument panel products is also constantly improving and developing. As a relatively advanced process, powder slush molding process products are more and more favored by enterprises due to the characteristics of good pattern uniformity, no internal stress, and high design tolerance. Many auto parts manufacturers have adopted this process to produce automotive dashboard skins . However, during the manufacture and subsequent processing of automotive PVC slush-molded skins, there will be a lot of waste of scraps. The real util...
Claims
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IPC IPC(8): C08L27/06C08J7/04C08J11/06B29B17/04B29C41/02
CPCB29B17/0412B29B2017/0416B29B2017/044B29C41/003B29C41/02C08J7/0427C08J11/06C08J2327/06C08J2475/04C08L27/06C08L2205/025Y02W30/52Y02W30/62
Inventor 刘子睿
Owner 刘子睿