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Surface treating method for foaming products

A surface treatment and product technology, which is applied in the field of treatment of residual release agent on the surface of polyurethane partial foaming products in automotive interiors, can solve the problems of residual release agent on the surface of foaming process, and achieve the effect of meeting the requirements of bond strength

Inactive Publication Date: 2009-12-16
YANFENG AUTOMOTIVE TRIM SYST CHONGQING
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a method for surface treatment of foamed products that is both environmentally friendly and uniform in surface treatment. Adhesion strength problem after skin vacuum lamination

Method used

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  • Surface treating method for foaming products
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Embodiment Construction

[0019] The following is based on Figure 1 to Figure 2 , give a preferred embodiment of the present invention, and give a detailed description, so that the functions and characteristics of the present invention can be better understood.

[0020] In an embodiment of the present invention, the foamed product 1, such as the upper decorative panel of a certain car model, is produced by a partial polyurethane foam method, and its structure is divided into three layers: ABS plastic skeleton 11, local foamed layer 12 , and PVC skin (not shown in the figure). refer to figure 1 , shows the structure of skeleton plus partial foaming layer, the outline on the right side of the skeleton 11 is a local foaming area, and the rest of the area is a hard plastic skeleton. The foam is a semi-rigid polyurethane foam formed by foaming isocyanate and polyol. After the foam layer 12 is surface-treated, it is bonded with the PVC skin by glue.

[0021] In order to prevent the foam from sticking to...

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Abstract

The invention relates to a method for treating the surface of a foamed product. The surface of a partially foamed polyurethane product for automotive interior with a residual release agent on the surface is subjected to flame treatment on the surface of the foamed product after demoulding. The flame treatment includes combusting combustible gas and air in a flame gun to generate a flame; adjusting the flow of air so that the outer flame of the flame is adjusted to be blue; the outer flame of the flame is in contact with the surface of the foamed product and moves at a constant speed. The method of flame treating the surface of the foamed product effectively solves the problem of the vacuum composite bond strength between the foamed surface and the PVC skin, and meets the bond strength requirements of the foamed product.

Description

technical field [0001] The invention relates to a method for treating the surface of a foamed product, in particular to a method for treating a mold release agent remaining on the surface of a partially foamed polyurethane product for automobile interior decoration. Background technique [0002] At present, the requirements for personalization and comfort of automobile interior design are increasing day by day, and the technology of automobile interior decoration is also becoming more and more diversified. The unique local foaming process (that is, foaming the plastic skeleton part) not only improves the comfort of the interior, but also enables greater flexibility and freedom in the design of automotive interior products, which is of groundbreaking significance . [0003] The entire process of the partially foamed product is specifically described as follows: the plastic skeleton is first injection molded, and then the plastic skeleton is put into a foaming mold for foamin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C71/02B29C44/56B29K75/00B29L31/58
Inventor 金淑亮陈虹宇蒋勇周瑶
Owner YANFENG AUTOMOTIVE TRIM SYST CHONGQING
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