Preparation process of automotive interior decorative part EPP product surface epidermis grain

Abstract

The invention discloses a preparation process of automotive interior decorative part EPP product surface epidermis grain. The preparation process comprises mold forming and epidermis grain hot pressing. Epidermis grain hot pressing comprises the following steps that S1, the temperature is raised, heating temperature is preset at 130 DEG C in a control interface of a hot pressing epidermis grain machine, steam is introduced into an epidermis grain mold until the temperature in the epidermis grain mold is increased to 130 DEG C, and a cooled formed EPP board is placed in the epidermis grain mold; S2, epidermis grain hot pressing is carried out, wherein a hot-pressing machine drives an upper mold and a lower mold to carry out mold closing and hot pressing, the hot pressing time is 115-125s, the upper mold of the epidermis grain mold is pressed into the lower mold by 3 mm, and the surface of an EPP board is pressed to form an epidermis grain sample; and hot pressing is carried out for 115-125s under the environment with the temperature of 130 DEG C; and S3, cooling is carried out, wherein after epidermis grain forming, cooling water is injected into and enters the epidermis grain moldfor natural cooling, and the cooling time is 240-260s. The prepared board is fine and smooth in outer epidermis grain, relatively hard in epidermis and resistant to friction, and can be used for places with high apparent requirements.

Description

technical field [0001] The invention relates to a preparation process of surface grains, in particular to a preparation process of surface grains of EPP products for automotive interior decoration, and belongs to the application field of surface grain processing of EPP products. Background technique [0002] Skin texture preparation is a commonly used manufacturing process in the production process of EPP products. Using this manufacturing process, the required skin texture can be produced on the outside of the EPP product, making the outside more beautiful and adapting to different work needs. [0003] However, there are still some deficiencies in the preparation process of the existing surface striae. The existing surface texture preparation process has simple steps, and the texture is often set inside the forming mold, and the mold is set in advance according to the size of the product and the surface texture. Then put the pre-pressed EPP material into the mold, and inje...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation process for the surface texture of automobile interior EPP products, which can solve the problem that the existing surface texture is simple in steps, and the texture is often set inside the molding mold, and it is preliminarily determined according to the size and surface of the product. Texture setting mold

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