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Injection molding technology of composite panel

An injection molding process and composite panel technology, applied in the direction of flat products, household appliances, and other household appliances, can solve the problems of less color, monotony, etc., and achieve the effects of improving quality, reducing production steps, and rapid production

Inactive Publication Date: 2010-11-10
ZHEJIANG DAAN MOLDING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The surface printing of ordinary plastic parts generally has fewer colors due to process limitations, and is monotonous and dull

Method used

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  • Injection molding technology of composite panel
  • Injection molding technology of composite panel
  • Injection molding technology of composite panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] As described in the accompanying drawings, the present invention adopts the injection molding process of the composite panel, which comprises the following steps:

[0033] ①Select the film;

[0034] ②Print patterns on the film; adopt color screen printing; the screen used can use a screen with a diameter of about 34μ to make the pattern more beautiful. Under the ink properties will not change. ;

[0035] ③ Printing adhesive ink on the film; the adhesive ink used, its composition includes at least the following: synthetic resin, 3-methoxy-3-methylbutyl acetate, aromatic hydrocarbons, 1, 3, 5 three Toluene, isophorone;

[0036] ④ Die-cut the film; directly die-cut the film to a size consistent with the size of the panel; for a panel with a curved surface, the film is also formed into a curved shape that is basically consistent with the curved panel during heating and forming; the heating forming mold , the upper mold is a metal mold, the lower mold for placing the fil...

Embodiment 2

[0041] The difference between this embodiment and Example 1 is that it adopts the way of horn diving into the glue, the plastic pouring channel is horn-shaped 401, and the thimble is 77. When the mold is released, the thimble 77 will cool the horn-shaped plastic material head 402 Eject forward, because horn becomes lever shape in mold, easily comes off with composite panel 22. In this way, processing efficiency is improved.

[0042] Since the injection molding temperature is as high as 200°C-300°C, the temperature resistance of the ink is required to be high. Conventional inks are prone to ink flushing, discoloration, and delamination after being subjected to high-temperature injection molding. We choose different inks to make a combination, reduce the cyclohexanone and ethylene glycol components, replace them with ester solvents, and add high temperature resistant additives to the inks to cure the ink layer to meet the high temperature impact of injection molding, greatly imp...

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Abstract

The invention relates to an injection molding technology of a composite panel, which comprises the following steps: selecting a film; printing patterns on the film; printing adhesion ink on the film; punching and heating to mold the film; punching the film until the size and the shape of the film are identical to those of the panel when the film is punched to be molded; arranging the film into an injection mould and positioning; and injecting to make resin base materials adhered with the film so as to process the composite panel. The lower die of a heating molding mould used for arranging the film is a silica gel mould. The silica gel mould can smooth the drawing process, and effectively protects the ink, and the molded film has small rebound and better shaping effect and is easier to operate.

Description

technical field [0001] The invention relates to a processing technology of a composite panel, in particular to a processing technology of an in-mold composite panel. Background technique [0002] The traditional veneer decoration is to paste the printed film on the surface of the decorated product with double-sided tape. Due to the use of double-sided tape, it will cause the harm of organic solvents, and it is prone to delamination and warping. The overall appearance is unsatisfactory. [0003] The surface printing of ordinary plastic parts generally has a small number of colors due to the limitation of the process, which is monotonous and dull. Contents of the invention [0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a processing technology for a composite panel with firm adhesion, convenient processing and beautiful appearance. [0005] In order to solve the problems of the technologies d...

Claims

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Application Information

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IPC IPC(8): B29C45/14B29C45/26B29C45/27B29L7/00
Inventor 王大安
Owner ZHEJIANG DAAN MOLDING TECH
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