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Introduction
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We are a UK based business exporting own brands of Shinex Acrylic and Polyurethane 'speciality coating' lacquers for various substrates and applications.
Lacquering is done on metal substrates such as copper, brass, silver, gold, nickel and zinc alloys. The coating can also be applied on real gold and silver plated components as well as silver-flashed and tin plated components and substrates such as wood, plastic, wax, ceramics, rubber etc .
Products are coated to give protective layer of film of exceptionally clear, glossy or dye colour at low or high film thickness for a degree of abrasion resistance. Type of lacquer is selected on shade/ clarity and acetone rubs required which is often based on end product application and customer requirement. Shinex range of lacquers could be used as dye mixed in-lacquer or as post dye system. We supply both types of dyes too.
The types of lacquers are either ’waterbase’ or ‘solventbase’ and curing is achieved by either ‘stoving’ or ‘air drying’. It depends on how the lacquer is manufactured and the recommended application process. There are two processes for lacquering metal products and the rest are applied through Dip / Spray.
Shinex lacquers are supplied for two types of lacquering process as:
1. Electrophoretic Lacquers
2. Dip, Brush or Spray Lacquers
1. Electrophoretic Lacquers for metal products deposited cathodically / anodically
Electrophoretic coating is also referred as electrocoating method which uses an electrical current to deposit lacquer on metal substrates such as Aluminium, Copper, Gold, Silver, Brass, Zinc Rich Metals, Zamac, Galvanized /Galvaneal. Stainless steel, CRS/HRS etc.
The electrocoat system applies a DC charge to a metal part immersed in a bath of oppositely charged lacquer particles. The paint particles are drawn to the metal part and lacquer is deposited on the part, forming an even, continuous film over the entire surface, until the coating reaches the desired thickness.
Electrophoretic lacquering is a 'Continuous process after plating' as it could be continuation of electroplating line followed with lacquering tank, which is also described as 'wet on wet' plating process. The Electrophoretic lacquering is an advanced form of lacquering with a simple process using waterbase solutions and with low risk of fire and safer environment. It has excellent throwing power to coat difficult shapes evenly. Metal products coated using this method are artificial jewellery, gift items, door handles, hardware products etc.
Brief information on equipment required for commercial electrophoretic lacquering
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2. Dip, Brush or Spray Lacquers for metal and other materials
The waterbase or Solventbase lacquers are applied by dipping or spraying and curing is achieved by either ‘stoving’ or ‘air drying’. It is simple form of coating. Precaution is required for solventbase dip and spray lacquers.
There are various characteristics found in Nitrocellulose, Epoxy, Acrylic, Polyurethane and other types of Lacquers and using technical expertise various resins, solvent, wetting additives and cross linking materials are mixed in specific ratios at the time of manufacturing to create suitable lacquer for a specific requirement. Lacquers have been used extensively as fast-drying, weather-resistant finishes which creates a clear film and if dyes are added gives variety of colours. Additives can be applied to achieve gloss, matt, pearl and other metallic finishes.
Type of lacquer is selected on shade/ clarity, coating thickness for durability, acetone rubs, UV resistance required, which is often based on coated product application and customer requirement.
Brief information on equipment required for commercial dip & spray lacquering..
For more information write to us on
info@shinextechnologies.co.uk
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