Plastic vacuum coating equipment vacuum evaporation Plating Technology

 

 Vacuum coating equipments plastic decorative film evaporation plating, general plastic vacuum evaporation coating machine has horizontal vertical double room (clam-shaped) two.
  Vacuum coating machine evaporation coating process is: cleaning degreasing - shelves - a cured primer - Evaporation a topcoat a cured - a stained shelves - Inspection.

The following detailed description coating processes.‍
​‍    (1) incoming inspection.
    (2) drying. When the member to be coated with more incoming water, shall be dried 3 ~ 5h, a temperature of 50 ~ 60 ℃.
    (3) shelves. Coating by vacuum coating machine basic requirements in general injection molding, and therefore to be plated surface is generally less oil, after the general can wipe the shelves, but the incoming oil for a long time need to be decontaminated. Method is to use commercially available detergent by piece brushing, rinsing and drying. Oil cleaning agent in serious cases required 50 ~ 60 ℃, soak 15 ~ 20min degreased.
    (4) removal. This process is to ensure that one of the key vacuum coating machine coating quality, there are two ways: one is to use a vacuum cleaner to be aligned Shang Hao rack plating carefully dust, can achieve better results; the other is to use high-pressure gas "dust" method, this method must be equipped with water separator, but in practice this method is not very satisfactory; Another method is to use electrostatic precipitation method, when using the higher quality requirements .
    (5) primer. Primer coating is to ensure the quality of the key of the two, primed aims to improve the plated surface finish and brightness; improve film adhesion.
    (6) drying. Need to be painted after leveling dryness treatment, infrared heating method, an electric heating method, and ultraviolet (UV) curing method and the like. The curing temperature is 60 ~ 70 ℃, the curing time is 1.5 ~ 2.5h.
    (7) Coating. Coating is the key to ensuring the quality of the coating.
    (8) topcoat. Protect the metal film, to prepare for the coloring process.
    (9) A colored. After the dyeing treatment can be completely cured topcoat. According to customer requirements, according to the different colors are formulated by a certain percentage, commonly available gluten preparation 24K gold, gold and Pink; preparation of black with black powder, pink and green, pink and blue. To enhance wetting plating can be added 1% glacial acetic acid, color temperature control at 60 ~ 70 ℃, not to exceed 80 ℃.