Wall Cladding Interior Decoration Wood Grain Steel Coils Pre-Painted Galvanised Steel Coil Z180 PE 15 Years Warranty

Wall Cladding Interior Decoration Wood Grain Steel Coils Pre-Painted Galvanised Steel Coil Z180 PE 15 Years Warranty

Product Introduction Section

Printed color coated steel and aluminum coil

The printed color coated plate has decorative effects such as wood grain, brick grain, camouflage, marble, etc.

The printing color coated coils usually adopts the gravure printing process, which uses steel rollers for laser engraving of the required patterns to transfer the ink onto the surface of the steel plate.

1. Firstly, the substrate is subjected to pre-treatment such as degreasing, cleaning, and passivation. After the pre-treatment process is completed, a layer of matching color primer is applied to the surface of the steel plate. According to the application field of the printed color coated plate, the primer can be divided into polyester, polyurethane, and other coating types. After the primer is dried and bakeout, printing is carried out using ink. According to the complexity of the pattern, it can be divided into single color printing and multi color printing. After the ink printing is dried and baked, Re-coating the varnish, including polyester, High durable polyester (HDP), fluorocarbon PVDF and other paint coating types. After the primer is dried and solidified, the entire production process of printed color coated boards is completed through processes such as cooling, coiling, and shearing.
2. The above is a two-coating and two-baking production process, for the higher requirements of printing colour coated panels, such as fluorocarbon printing colour coated panels, you can use the three-coating and three-baking process, after the roller coating of polyurethane primer, then coated with a layer of fluorocarbon topcoat of the matching colours, and then ink printing, and then finally coated with a layer of fluorocarbon varnish.

Printed steel sheet can be used in household appliances, furniture, doors and windows, signs, outdoor decoration and so on. 

The substrate can be cold-rolled substrate, electro-galvanised substrate and hot-dip galvanised substrate, aluminium-zinc plated steel sheet, and materials with suitable mechanical properties should be selected according to the different uses.

• Hot-dip galvanised substrates : Hot-dip galvanised substrates can be selected according to the amount of galvanisation, zinc coating pattern and surface finishing. 
• Aluminium-zinc plated steel sheets : Since its introduction to the world market in the 1970s, aluminium-zinc plated steel sheet has become the most popular steel sheet for roofing and walling. The hot-dip alloy coating of aluminium-zinc-plated steel contains 55% aluminium, 43.5% zinc and 1.5% silicon, effectively combining the strength of steel, the corrosion resistance of aluminium and the sacrificial protection of zinc against cut-outs and intervals. In similar environments, galvanised steel sheet with the same coating thickness lasts about four times longer than galvanised steel sheet. Aluminium-zinc plated steel is a superior price/performance ratio product, costing far less than stainless steel or aluminium, and has a pleasing light silver-grey finish.

Second, the choice of paint base

Primer type and film thickness Primer has four types: epoxy resin, polyester resin, acrylic resin and polyurethane resin. Generally, the primer is selected according to the purpose of the product base, the occasion of use, the degree of processing, as well as the matching of the topcoat. The film thickness of primer is usually 5um. 

1,Epoxy primer

Good adhesion with the substrate, water resistance, alkali resistance, good chemical resistance, is the earliest coil with primer, flexibility is not as good as other primers.

2,Polyester primer

Good adhesion with the substrate, excellent flexibility, more sensitive to humid environments, less resistant to chemicals than epoxy primer.

3,Water-soluble acrylic primer

Good adhesion with the substrate, excellent flexibility, organic solvent content, low temperature curing, should not be stored in a humid environment, high pretreatment requirements.

4,Polyurethane primer

With chemical resistance, friction resistance, durability, good flexibility.

Topcoat types and film thicknesses

The most commonly used topcoats are polyester, silicone-modified polyester, polyvinyl chloride plastisol and polyvinylidene fluoride.

1,Polyester

Good adhesion, wide range of formability and outdoor durability, medium chemical resistance.

2,Silicon modified polyester

Good hardness, abrasion resistance and heat resistance of the coating film, as well as good outdoor durability and not chalking, gloss retention and flexibility is limited, the cost of medium to high.

3,Polyvinylidene chloride

Good formability and colour retention, excellent outdoor durability and resistance to chalking, solvent resistance, limited colours, expensive.

4,Polyvinyl chloride plastisol

Excellent external durability and chemical resistance, damage resistance, beautiful, need special primer matching. Surface can have a smooth type, for pressing or automatic shrinkage type to form patterns. Coating thickness is generally greater than 100um, in addition to plastic sol, in general, the primer plus topcoat coating thickness >= 20um, the product performance can achieve the intended purpose.

Third, the colour and gloss of the paint

Generally, the standard colour can be selected according to the production factory, which can shorten the workload in the pre-production stage. If you need special colours, because the coating first in the coating factory for small samples of configuration, and the performance of the requirements before production, so from the order to the colour plate production time will be longer. The surface gloss of the coating measured with a reflection angle of 60 degrees, the larger the value, the higher the gloss, the coatings used in the construction of medium-gloss and matt, between 30-55. This is because the high gloss coatings used on the building on the reflection of sunlight is strong, harsh; if indoors, at night in the light is easy to cause visual fatigue.

AVAILABLE WOOD GRAIN PATTERNS

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