EPP part surface machining flocking technical method

A technology of surface processing and process method, which is applied in the field of surface processing of EPP parts, can solve the problems affecting the application of EPP parts, the difficulty of fabric adhesion processing, and the inability to process, so as to expand the scope of use, reduce investment in molds and tooling, and reduce The effect of scrap

Inactive Publication Date: 2018-08-31
上海子元汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method of bonding fabrics on formed EPP parts, when encountering complex curved surfaces, the attachment processing of fabrics will be very difficult, and some even cannot be processed, which seriously affects the application of EPP parts in automotive exterior parts.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of process method of EPP part surface processing velvet feeling, comprises the following steps:

[0023] (1) Take the EPP parts and fix them, and sandblast the surface until the surface roughness Ra is about 2.0;

[0024] (2) Wash the EPP parts obtained in step (1), dry them, and spray EVA glue, the amount of spray glue is 7-8g / m 2 ;

[0025] (3) Use a flocking machine to spray negatively charged fluff (thickness of fluff 1.2D, length of fluff 1.0mm) onto the surface of the EPP part after glue spraying in step (2), and solidify, that is, the surface velvet processing of the EPP part is completed deal with.

[0026] The flocked EPP parts prepared in this example have high velvet sensitivity, and the surface is smooth to touch without unevenness. In addition, the velvet adheres firmly to the surface of the EPP part, and there is basically no problem of lint removal.

Embodiment 2

[0040] A kind of process method of EPP part surface processing velvet feeling, comprises the following steps:

[0041] (1) Take the EPP parts and fix them, and sandblast the surface until the surface roughness Ra is about 1.6;

[0042] (2) Wash the EPP parts obtained in step (1), dry them, and spray EVA glue, the amount of spray glue is 7-8g / m 2 ;

[0043] (3) Use a flocking machine to spray negatively charged fluff (thickness of fluff 1.0D, length of fluff 0.8mm) onto the surface of the EPP part after glue spraying in step (2), and solidify, that is, the surface velvet processing of the EPP part is completed deal with.

[0044] The flocked EPP parts prepared in this example have high velvet sensitivity, and the surface is smooth to touch without unevenness. In addition, the velvet adheres firmly to the surface of the EPP part, and there is basically no problem of lint removal.

Embodiment 3

[0046] A kind of process method of EPP part surface processing velvet feeling, comprises the following steps:

[0047] (1) Take the EPP parts and fix them, and sandblast the surface until the surface roughness Ra is about 2.5;

[0048] (2) Wash the EPP parts obtained in step (1), dry them, and spray EVA glue, the amount of spray glue is 7-8g / m 2 ;

[0049] (3) Use a flocking machine to spray negatively charged fluff (thickness of fluff 1.4D, fluff length 1.2mm) onto the surface of the EPP part after glue spraying in step (2), and solidify, that is, the surface velvet processing of the EPP part is completed deal with.

[0050] The flocked EPP parts prepared in this example have high velvet sensitivity, and the surface is smooth to touch without unevenness. In addition, the velvet adheres firmly to the surface of the EPP part, and there is basically no problem of lint removal.

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PUM

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Abstract

The invention relates to an EPP part surface machining flocking technical method. The method comprises the following steps that (1) an EPP part is fixed, and sand blasting is conducted on the surfaceof the EPP part until the surface is rough; (2) the EPP part obtained in the step (1) is cleaned, dried and subjected to glue spraying; and (3) flocks with negative charges are sprayed by a flocking machine to the surface of the EPP part subjected to glue spraying in the step (2) and solidified, and the EPP part surface flocking machining treatment is completed. Compared with the prior art, the flocks are used for replacing other base materials for surface beautification of EPP products, the part level is improved, higher design freedom is achieved, the EPP appearance smooth requirement is lowered, scraped products of the finished EPP products are effectively reduced, and the application range of EPP foaming parts on automobile parts is enlarged.

Description

technical field [0001] The invention belongs to the technical field of surface treatment of key parts of automobiles, and relates to a process method for processing the surface of EPP parts with a velvet feel. Background technique [0002] At present, EPP parts are applied to the preparation of automobile appearance parts, and in order to keep the matching with the seats and carpeted trunks inside the car, a layer of fabric is usually added on top of the EPP appearance parts, and thermal insulation is usually used between the fabric and EPP. Melt adhesive. This method of bonding fabrics on formed EPP parts, when encountering complex curved surfaces, the difficulty of fabric attachment processing is very high, and some even cannot be processed, which seriously affects the application of EPP parts in automotive exterior parts. Contents of the invention [0003] The purpose of the present invention is to provide a method for processing the surface of EPP parts with a velvet ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C65/52
CPCB29C65/522B29C65/4815
Inventor 徐瑞亮
Owner 上海子元汽车零部件有限公司
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