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V-process casting soaking film-forming method

A technology of film formation and casting shape, applied in the direction of casting molding equipment, casting mold components, casting molds, etc., can solve the problems of high labor intensity, film rupture, complex process, etc., and achieve wide applicability, easy operation, and simple working steps simple effect

Inactive Publication Date: 2014-12-17
黄开午
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a soaking film forming method to solve the problems of membrane rupture, bridging, poor sealing, complicated process and high labor intensity caused by coating on complex casting patterns.

Method used

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  • V-process casting soaking film-forming method
  • V-process casting soaking film-forming method
  • V-process casting soaking film-forming method

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Embodiment Construction

[0012] Further description will be made below in conjunction with accompanying drawings and specific implementation methods:

[0013] The immersion film-forming method of the present invention is: be made up of pattern frame (1), casting pattern (2), liquid EVA plastics (coating liquid) (3), liquid holding tank (4), the EVA plastics of solid state Liquid EVA plastics with different solubility are the coating liquid (3), put it into the liquid holding tank (4), and the casting pattern (2) is fastened on the pattern frame (1) for details. figure 1 ;Turn over the pattern frame (1) so that the casting pattern (2) is inserted into the liquid tank (4) and soaked in the coating liquid (3) for details. figure 2 ; When the surface of the casting pattern (2) is wet, extract, stand still, turn over and restore, volatilize the solvent in the coating solution (3), and a layer of solid EVA plastic film (5) is formed on the surface of the casting pattern (5). image 3 .

[0014] The immer...

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Abstract

The invention discloses a V-process casting soaking film-forming method, belongs to the field of V-process casting plastic covering, and aims to solve the problems of broken membrane, crosslinking, and tedious technology in the production of covering in complicate moulds. The provided soaking film-forming method comprises the following steps: making solid EVA plastic into liquid EVA plastic (namely the coating liquid) with different solubilities, soaking a casting model into the coating liquid, lifting out the casting model when the surface of the casting model is completely wetted, and volatilizing the solvent in the coating liquid so as to form a solid EVA plastic film on the casting model surface; and the method has the advantages of no phenomenon of broken membrane and crosslinking, and simple and reliable technology.

Description

technical field [0001] The invention relates to the field of V-method casting, in particular to a plastic film forming method. Background technique [0002] At present, there are several methods for V hair casting film forming, 1. Use EVA plastic film to cover the pattern, heating or not heating and forming by negative pressure; 2. Spray powder resin on the pattern and heat it to form a film; 3. Spray the cellulose solution onto the pattern, and the solvent volatilizes to form a film; when covering a complex pattern with a plastic film, if the above method (1) is used, the phenomenon of film rupture and bridging will occur. Use the above (2), (3) The method is not easy to form a uniform film, and it is easy to cause poor airtightness, and the process is complicated and labor-intensive. Contents of the invention [0003] The purpose of the present invention is to provide a soaking film-forming method to solve the problems of membrane rupture, bridging, poor sealing, compli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/03
Inventor 黄开午
Owner 黄开午