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    Application of vacuum coating plastics
    Hits:   Date:2020-05-20  
    Plastic has the characteristics of light weight, excellent performance, easy molding, easy processing, etc. It has a wide range of applications and is an indispensable material in daily life and various sectors of the national economy. Plastic surface coating will improve the surface properties of plastics, so that it has a certain unique function. Vacuum coating technology is one of the main technologies for modern plastics to improve surface properties. Here are some common applications of vacuum-coated plastics.

    1. Application of decoration function

    The typical application of decorative film is gold and silver wire. The gold and silver wire processed by aluminizing polyester film has become an indispensable decorative material for textiles. It is very popular in daily life, handicrafts, stage art supplies and other aspects. In addition, decorative plastic coatings are also widely used in the fields of instruments, machinery, automobiles, toys, lamps and household appliances, and have high economic value and practicality.
     
    For example, in the production of signage panels, Japan uses magnetron sputtering nickel plating, chromium instead of wet plating, and plated text and graphics on convex plastic signs with good appearance and decoration effects; Straumal and others have also used vacuum arc deposition The large-area plastic surface is coated with titanium, titanium nitride, titanium monoxide and titanium nitride / titania decorative coatings.
     
    2. Application of barrier function

    In order to improve the circulation cycle and shelf life of commodities, the role of product packaging is increasingly important. Especially for products with high quality requirements such as food, medicine, cosmetics, and washing products, packaging with high barrier performance packaging materials is often the most effective means. Commonly used high-barrier packaging films usually use vacuum evaporation or vacuum sputtering to coat a layer of aluminum on the plastic film.
     
    In order to improve the circulation cycle and shelf life of commodities, the role of product packaging is increasingly important. Especially for products with high quality requirements such as food, medicine, cosmetics, and washing products, packaging with high barrier performance packaging materials is often the most effective means. Commonly used high-barrier packaging films usually use vacuum evaporation or vacuum sputtering to coat a layer of aluminum on the plastic film.

    3. Application of electromagnetic function

    Now, electronic instruments are developing towards "light, thin, short, small" and multi-functional, high-performance and low-cost. Plastic chassis, plastic parts or panels are widely used in electronic instruments. External electromagnetic waves can easily penetrate the casing or panel, causing harmful interference to the normal operation of the instrument; The electromagnetic waves generated by the instrument are also very easy to radiate to the surrounding space, affecting the normal work of other electronic instruments.
     
    In order to make this electronic instrument meet the requirements of electromagnetic compatibility, people vacuum-plated a metal film on the plastic surface. After surface metallization treatment, the completely insulated plastic surface has the characteristics of reflecting, absorbing, conducting and attenuating electromagnetic waves like metal, and can play a role in shielding electromagnetic wave interference.