Double-surface die inner injection moulding product and production method thereof

A product manufacturing and internal injection molding technology, which is applied to double-sided in-mold injection molding products and its manufacturing field, can solve problems such as product deformation, uncomfortable eyes, and inability to meet spatial dynamic three-dimensional patterns, etc., to achieve yield improvement and low production difficulty. Effect

Active Publication Date: 2015-02-11
QUNDA PLASTIC ELECTRONICS SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that, for the existing grating film, there are difficulties in the application of the IML process in the product in-mold decoration process, the eyes will be uncomfortable when used at close range, and the product will be deformed in the production of the single-sided IML process. Seriously, it cannot meet the problem of spatial dynamic three-dimensional patterns

Method used

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  • Double-surface die inner injection moulding product and production method thereof
  • Double-surface die inner injection moulding product and production method thereof
  • Double-surface die inner injection moulding product and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] In step S12, the front film 2 and the back film 3 are respectively formed by a pneumatic forming machine, and the position marked with the first positioning hole 6 on the film is fixed corresponding to the positioning column of the forming mold. The film is heated for 3s and formed into the desired shape, the forming time is 2s

[0050] In the S2 film cutting step, the formed film produced in the previous step is cut, and the cutting time is set to 0.3s;

[0051] In the S3 injection molding step, the amount of melt injection used is increased by 8%, and the holding time is extended by 3s, and the cooling time is 15s to ensure that the melt can continue to be replenished after the product cools and shrinks.

[0052] During injection molding, the temperature of the mold at the position of the back film is set to 65°C; the temperature of the mold at the position of the front film is set at 50°C and controlled by a water temperature machine;

[0053] The other steps are th...

Embodiment 2

[0055] In step S12, the front film 2 and the back film 3 are respectively formed by a pneumatic forming machine, and the position marked with the first positioning hole 6 on the film is fixed corresponding to the positioning column of the forming mold, and then the film is started at a temperature of 500°C. The film is heated for 5s and formed into the desired shape, the forming time is 3s, and the formed film is taken out;

[0056] In the S2 film cutting step, the formed film produced in the previous step is cut, and the cutting time is 0.5s;

[0057] In the S3 injection molding step, the amount of molten material used in the injection molding process is increased by 10%, and the holding time is extended by 5s, and the cooling time is 18s to ensure that the melt can continue to be replenished after the product cools and shrinks;

[0058] During injection molding, the temperature of the mold at the position of the back film is set to 80°C; the temperature of the mold at the po...

Embodiment 3

[0061] In step S12, use a pneumatic molding machine to form the front film and the back film respectively, fix the position marked with the first positioning hole 6 on the film corresponding to the positioning column of the forming mold, and then start to heat the film at a temperature of 550°C 7s, and molded into the desired shape, the molding time is 5s, and the formed film is taken out;

[0062] In the S2 film cutting step, the formed film produced in the previous step is cut, and the cutting time is 0.7s;

[0063] In the S3 injection molding step, the amount of molten material used in the injection molding process is increased by 12%, and the holding time is extended by 7s, and the cooling time is 20s to ensure that the melt can continue to be replenished after the product cools and shrinks.

[0064] During injection molding, the temperature of the mold at the position of the back film is set to 85°C; the temperature of the mold at the position of the front film is set at ...

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Abstract

The invention relates to a double-surface die inner injection moulding product and a production method thereof. The production method comprises the following steps: employing four-color printing to obtain a right side film (2) and employing Keshi color printing to obtain a back side film (3), forming a required shape through film moulding and cutting, respectively placing the right side film (2) and the back side film (3) in an injection moulding transparent engineering material (1) corresponding to an injection mould, performing nozzle cutting on an injection member after moulding, examining and packaging to obtain the right side film (2) and the back side film (3), and the transparent engineering plastics product capable of performing injection moulding of the right side film (2) and the back side film (3). The production method has the beneficial effect that pattern three-dimensional layering is stronger, no warping is generated on the products, the adhesive force between the film and the transparent plastic is large; product yield rate is increased by 20%, product deformation degree is decreased by 50%; and the production efficiency is increased.

Description

technical field [0001] The invention relates to double-sided decoration of plastic parts, in particular to a double-sided in-mold injection molding product and a manufacturing method thereof. Background technique [0002] Existing mobile phones, laptops, digital photo frames and other product casings, in order to achieve a sense of space layering, the PC film is first subjected to surface embossing, photolithography, UV transfer and other processes to obtain grating pixel units on one side of the film, and then The other side of the film is printed by screen printing, four-color printing or concave-convex printing to obtain a planar pattern. There are many defects in the film prepared by this method for in-mold decoration: the grating film is too thick, which is not conducive to the film on the surface of the IML. The application of decoration technology; after the high temperature and high pressure injection molding of the grating film, the product deformation is large and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/78B29C45/72H04M1/02B41M1/14
Inventor 刘永福汪智勇尹高喜
Owner QUNDA PLASTIC ELECTRONICS SHENZHEN
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