Surface finishing methods for plastic parts: polishing, spraying, silk screen printing, laser engraving, etc.

In the plastic manufacturing industry, not only do the parts need to be processed, but they also need to be surface finished when necessary to increase their aesthetics and market competitiveness. Commonly used surface finishing methods are polishing, spraying, silk screen printing and laser carving. These techniques are widely applied in the fields of consumer electronics, cars, medical care, household appliances, toys and so on.

• Polishing: Improve surface finish and texture

1. What is plastic polishing?

Plastic polishing is a process of mechanical, chemical or manual grinding of plastic surface to enhance its smoothness and reflection. The commonly used methods are cloth wheel polishing, diamond polishing and chemical polishing.

2. Application:

High Gloss Product Case: For Cell Phone Case, Cosmetic Container

Transparent components: for example, acrylic window, lampshade, optical component

The casing of medical equipment: needs to be smooth and burr-free, easy to disinfect

• Spraying: Custom color and protection function

1. What is Spraying?

Spraying is a process in which a coating is applied uniformly to the plastic surface. It is often used for coloring, reinforcing, and improving waterproof and scratch resistance. Widely used paints are PU, UV, rubber and metallic coatings.

2. Application:

Consumer electronics: remote controls, headphones, camera shells

Automotive interior parts: dashboard decoration, button panels

Home appliances: rice cookers, fans, air conditioning control panels

• Silk screen printing: the first choice for patterns, logos, and functional identification

1. What is silk screen printing?

Silk screen printing is a kind of printing technique in which the ink is transferred to the surface of the plastic. Suitable for large scale printing of graphic, text, logo, etc.

2. Application:

Electronics: Switch Keys, Product Model Recognition

Toys and presents: design, icon, cartoon

Medical and Laboratory Equipment: Function Description and Operating Instructions

• Laser engraving: high precision, high identification technology

1. What is laser engraving?

Laser carving uses a high energy laser beam to etch the plastic surface, creating a permanent engraving effect. Different from silk screen printing, laser engraving has better anti-counterfeit and durable properties.

2. Application:

Industrial Products: Serial Number, QR Code, Anti-Counterfeit Code

High Level Electronic Equipment: Mark, Function Recognition

Medical equipment: equipment number, specification identification

• How to select the proper finishing technology for the plastic surface?

Use and function requirements of the product (e.g. wear resistance or anti-forgery)

Requirements for the appearance of the design (for example, if it is required to have a mirror effect or brand colour)

Production lot (it is advisable to select laser engraving for small lots and silk screen for large batches)

Budget and Delivery Time (Medium Cost and Short Cycle for Painting and Silk Screen)

• Typical applications of plastic surface finishing technology in various industries

Choose the technology of polishing, painting, silk screen, laser carving and so on. Not only does it enhance the brand's reputation, it also extends the life of the product.

If you are looking for a reliable post-processing plant for plastic parts, or if you are choosing the correct process for your next project, please contact us for advice and customized solutions!