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Surface coloring and in-mold lacquer spraying technique for polyurethane foaming product

A surface coloring and polyurethane technology, which is applied in the technical field of processing the surface color of polyurethane products, can solve the problems of difficult to control the degree of spraying, poor adhesion, overspray, etc., to shorten the production process, block yellowing, and improve performance. force effect

Inactive Publication Date: 2009-06-24
吴国明 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned polyurethane foam products need to be colored after being taken out of the mold. The traditional coloring process is to spray paint directly on the polyurethane foam products after taking out the mold. , requires post-processing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The following examples are applied to the production of simulated river stones or other cultural stones with polyurethane foam products.

[0017] 1) Clean the molds to be produced, such as exhaust ports, filling ports, etc., and check whether there are impurities and residues in the inner cavity. Spray the release agent evenly in the mold cavity, where the release agent is a general release agent for polyurethane foaming process;

[0018] 2) Spray the color paint of the desired simulated river stone or other cultural stones in the cavity of the mold, apply the first layer of paint, dry (or dry naturally) and then apply the second layer of paint, and then dry (or dry naturally) ), can be sprayed with multiple channels of different colors of paint according to the actual effect.

[0019] 3), white material (that is POLYOL, can be polyester polyol or polyether polyol) and black material {that is ISO, can be MDI (dibenzomethane diisocyanate) or TDI (toluene diisocyanate)} ...

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PUM

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Abstract

The invention provides a process for spray painting in a surface coloring film of a polyurethane foam product, which is characterized by comprising: 1) evenly spraying a mould release agent in a mould cavity of a mould; 2) spraying required color paint in the mould cavity of the mould, and drying or naturally drying; 3) pouring a polyurethane foam material in the mould; and 4) after the reaction, opening the mould, and taking out the polyurethane foam product. The invention adopts a process for spray painting in the mould and injection molding, ensures that a colored paint product and the polyurethane material are organically combined into a whole, effectively prevents the yellowing of a foaming material, improves the surface wearing resistance of the foaming material, reinforces the adhesive force of the colored paint on the surface of the material, and overcomes the surface defects caused by the foaming process. The process can ensure that the molded product truly represents the grain and color of the mould and improve the appearance representability of the product. The process for spray painting is adopted in the mould to overcome the defects of the excessive spray painting, post treatment, poor adhesive force and the like in the prior spray painting, greatly improve the quality of products, shorten the production process, improve the production efficiency and reduce the production cost.

Description

Technical field [0001] The invention relates to a process for treating the surface of polyurethane foam products, in particular to a process for treating the surface color of polyurethane products. Background technique [0002] Polyurethane foam products are mainly used in the automobile, building materials and furniture industries as seasonings for their products or for shock absorption, decoration and insulation. Depending on the product, polyurethane foam products can provide different properties in some special applications. The green polyurethane rigid foam used for building energy saving can be directly used in the foam spraying building material insulation system scheme of roofs of different shapes; polyurethane "honeycomb technology", through the ingenious combination of paper honeycomb and polyurethane, can produce high pressure resistance lightweight vehicle interior components; polyurethane car seat solutions that reduce environmental emissions, and steering whee...

Claims

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Application Information

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IPC IPC(8): B29C44/12B29K75/00
Inventor 吴国明
Owner 吴国明