A kind of water-based organic porcelain pre-roller coated metal color plate and its manufacturing process
A metal substrate, water-based technology, applied in metal layered products, coatings, polyester coatings, etc., can solve the problems of unseen product sales, unseen pre-roller coating production processes and products, etc., to meet the color imagination Force and mechanical processing requirements, high coating utilization rate, and excellent function
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Embodiment 1
[0035] This implements a kind of manufacturing process of water-based organic porcelain pre-roller coated metal color plate, combined with figure 1 and figure 2 , select an aluminum coil with a thickness of 0.4 mm as the metal substrate 1, and form a pretreatment layer 1 and a pretreatment layer 2 3 after pretreatment with alkali washing, water washing, and passivation. The pretreatment layer 1 2 is located on the upper surface of the metal substrate 1, and the pretreatment Layer 2 3 is located on the lower surface of the metal substrate 1; the viscosity of the primer and top coat pre-roller coating is set to 40s according to the characteristics of the water-based paint; the upper surface of the pre-treatment layer 2 3 is coated with 6 μm water-based polyurethane white paint, and the pre-roller coating line speed Set at 20m / min, leveling after 20s, enter 260~220℃ step-down heating, bake and solidify for 60s, and cool to form water-based primer layer 4; the surface of water-ba...
Embodiment 2
[0041] This implements a kind of manufacturing process of water-based organic porcelain pre-roller coated metal color plate, combined with figure 1 and figure 2 , choose a 1.0mm thickness 3004H24 aluminum alloy coil as the metal substrate 1, the metal substrate 1 is pre-treated by alkali washing, water washing, and passivation to form a pre-treatment layer 1 2 and a pre-treatment layer 2 3, and the pre-treatment layer 1 2 is located on the metal substrate 1 On the surface, the pretreatment layer 23 is located on the bottom surface of the metal substrate 1; the primer and topcoat are pre-rolled and the construction viscosity is set to 38s according to the characteristics of the water-based paint; The roller coating line speed is set at 22m / min, after 20s of leveling, enter the 260~220°C stepwise cooling and heating, bake and solidify for 60s, and the water-based primer layer 4 is formed after cooling; the surface of the water-based primer layer 4 is then coated with 12µm Wate...
Embodiment 3
[0047] This implements a kind of manufacturing process of water-based organic porcelain pre-roller coated metal color plate, combined with figure 1 and figure 2 , choose a 0.45mm thick hot-dip galvanized steel plate as the metal substrate 1, and the metal substrate 1 is pre-treated by pickling, water washing, and passivation to form a pre-treatment layer 1 2 and a pre-treatment layer 2 3; The viscosity of the pre-roller coating is set to 40s; the surface of the pre-treatment layer 23 is coated with a 6µm water-based white primer, the coating line speed is set at 15m / min, after 60s of leveling, enter the 260~230℃ high-temperature drying room to separate The water-based primer layer 4 is formed after baking for 100 seconds in one section; the surface of the water-based primer layer 4 is coated with a 14µm water-based medium-gloss black organic porcelain topcoat, and the coating line speed is set at 15m / min. After leveling for 60s, enter Bake in a high-temperature oven at 270-2...
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