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Method for processing polyurethane mold surface through Teflon coating

A paint treatment and polyurethane technology, which is applied in the direction of pretreatment surface, special surface, surface coating liquid device, etc., can solve the problems of high cost of release agent, cumbersome process, not environmental protection, etc., and achieve wear resistance and durability Corrosion, reduce production costs, and simplify the production process

Inactive Publication Date: 2015-10-28
ZHEJIANG ZHENYANG COLD INSULATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to quickly and smoothly remove the product from the mold, a release agent must be used, and the release agent of the hydroxyl-coated type must be coated once before each molding. The process is cumbersome and consumes a lot of manpower and material resources. Harmful and not environmentally friendly, the cost of non-toxic and harmless release agents is relatively high, and there are still certain limitations in use

Method used

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Examples

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Embodiment Construction

[0021] The specific implementation of the present invention will be further described below in conjunction with the examples. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0022] Put the iron polyurethane mold into the oven. The temperature in the oven is 400°C. After baking for 4 hours, the grease can be completely removed, and then the emery with a mesh number of 80-120 is used for air pressure sandblasting under a pressure of 80pis. At a room temperature of 15 to 30°C, put the Teflon paint evenly stirred with a high-speed stirrer into the BINKS BULLOWS 630 spray gun, and spray evenly on the surface of the mold. After the first spray, the polyurethane mold is placed in an oven at a temperature of 150°C Heating within 1 hour for heat treatment, take out and cool the polyurethane mold and spray Teflon coating for the second time, spray evenly, af...

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Abstract

The invention discloses a method for processing a polyurethane mold surface through a Teflon coating. The method comprises the steps that the polyurethane mold surface is degreased; sand blasting is carried out on the degreased polyurethane mold surface, and then the Teflon coating is sprayed on the polyurethane mold surface; the Teflon coating sprayed on the polyurethane mold surface is heated; 5, the Teflon coating is sprayed on the polyurethane mold surface for the second time on which melting processing is carried out; and 6, the Teflon coating on the polyurethane mold surface processed in the step 5 is molten. The Teflon coating has the advantages of inadhesion, heat resistance, sliding performance, moisture resistance, abrasion resistance and corrosion resistance. The polyurethane mold surface coated with the Teflon coating which can be used repeatedly after coating is performed one time. The trouble that coating of a mold release agent needs to be carried out every time molds are released is saved; the production process is simplified, production efficiency is improved, production cost is reduced, and no harm is produced to the human body and environment.

Description

technical field [0001] The invention relates to a treatment process for a polyurethane mold, in particular to a method for treating the surface of a polyurethane mold with Teflon paint. Background technique [0002] Polyurethane materials have excellent bonding properties, which are disadvantageous in foam molding. In the production of molded polyurethane foam, cast polyurethane elastomer and other products, iron molds are used. In order to quickly and smoothly remove the product from the mold, a release agent must be used, and the release agent of the hydroxyl-coated type must be coated once before each molding. The process is cumbersome and consumes a lot of manpower and material resources. Harmful and not environmentally friendly, the cost of non-toxic and harmless release agents is relatively high, and there are still certain limitations in use. Contents of the invention [0003] Aiming at the problems in the prior art, the invention provides a method for treating th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/56B05D1/02B05D3/02B05D3/12B05D5/08B05D7/14
Inventor 李火松张平顾荣明李建强
Owner ZHEJIANG ZHENYANG COLD INSULATION TECH CO LTD
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