7 Types Of Surface Treatment Processes For Plastics Parts

DALIAN, China - March 24, 2021 - PRLog -- The surface treatment of plastics is to form a surface layer with some or more special properties on the surface of the material through physical or chemical methods. It can improve product appearance, texture, function and other aspects of performance.

1. In-mold Decoration Technology (IMD)

In-Mold Decoration-IMD (In-Mold Decoration-IMD): Put the printed film into a metal mold, and inject the molding resin into the metal mold to join the film, so that the printed film and the film A molding method in which the resin is integrated and cured into a finished product.

IMD includes IML (no stretch, small curved surface), IMF (high stretch product, 3D), IMR (remove the surface film, leaving only the ink on the surface). At present, IML and IMF are collectively referred to as IML in the industry.

Technical features:

1. Exquisite decorative graphics and logos are hidden, and will not disappear due to friction or chemical corrosion
2. The graphic, logo and color design can be changed at any time without changing the mold
3. For products with three-dimensional shapes, the printing accuracy is accurate, with an error of ±0.05mm
4. Can provide graphics, logo back light transmittance and high light transmittance window effect
5. The function buttons have uniform convex bubbles, good hand feeling, and the service life can reach more than 1 million times
6. Three-dimensional changes can increase the designer's degree of freedom in product design
7. The composite molding process achieves a seamless effect.

2. Painting

A coating method in which the paint is atomized by spraying tools such as a spray gun and sprayed on the workpiece to be coated. Spray paint will cut off the air, can play a role in anti-aging plastic products, the most important thing is to get the appearance effect that plastic product itself do not have.

Advantage:

1. Rich colors
2. Processing in a liquid environment can achieve surface treatment of complex structures
3. Mature technology and mass production
4. It has unique transparency and high gloss.

Disadvantages:

1. The cost is too high, low-cost positioning products are not suitable for this process
2. The process is relatively complicated and the yield rate is low.

3. NCVM Non-conductive Vacuum Plating

NCVM, also known as discontinuous coating technology or non-conductive electroplating technology, uses thin films such as metal and insulating compounds to be plated. Using the characteristics of each discontinuity, the final appearance has a metallic texture and does not affect the effect of wireless communication transmission.

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