One, what is curtain coating?
The paint flows out from the paint storehouse above the Dongguan curtain coater through the curtain knife to form a continuous and complete paint curtain. The workpiece is fed by the conveyor belt and passes through the paint curtain below the curtain knife. Uniform coating. The paint that has not been sprayed on the workpiece flows back to the paint hopper through the recirculation tank, and then is transported to the paint warehouse by the transfer pump for recycling.
Second, what are the drying methods for curtain coating?
There are four methods for curtain coating: room temperature drying, drying, microwave drying, and UV drying.3. What kinds of lacquers are available for curtain coating?
The spray coating can be used to spray PU paint, PE paint, NC paint, UV paint, water-based paint
Four. What is the composition of the curtain coating system?
Intermittent PU coating line design: self-conveying double-sided vacuum dust collector, 100,000-level dust-free coating room 7 meters, 100,000-level coating surface drying room, dust-free dry room (can also be designed as: hard work Microwave drying tunnel 15 meters).
The second type of assembly line fast drying PU coating design: self-conveying double-sided vacuum dust collector, 100,000-class dust-free coating room 7 meters, defoaming leveling tunnel 45 meters, solvent volatilization dry weak microwave tunnel 45 meters , The hard-dry and strong microwave drying tunnel is 15 meters, and the cold-air cooling and packaging section is 5 meters.
The third type of assembly line for rapid drying water-based paint spraying design: self-conveying double-sided vacuum dust collector, 100,000-class dust-free spraying room 7 meters, moisture volatilization dry weak microwave tunnel 45 meters, hard dry strong microwave drying tunnel 15 5 meters, cold wind cooling packaging section.
The fourth type of assembly line fast drying UV paint spray coating design: self-conveying double-sided vacuum dust collector, 100,000-class dust-free spray room 7 meters, weak microwave defoaming leveling tunnel 45 meters, UV dryer 3 meters, Packing section.
The 100,000-level spray coating room is equipped with a volatile solvent suction tower, positive pressure air supply, spray coating machine, and paint mixing area. Requires air dust particle standard below 10 microns
Fifth, where can curtain coating be applied?
Senren curtain coater is used for painting flat workpieces below 10CM height. Spray coating is widely used in the door industry, panel furniture, kitchen cabinets, floors, lines, decorative glass, new environmentally friendly building materials, printing, shutters, inkjet, handicrafts, calcium silicate boards, ecological wood panels, integration of exterior wall insulation and decoration, etc. Decorative painting.
Six. What are the benefits of curtain coating?
The coating methods of coatings are divided into: curtain coating, spray coating, brush coating, roller coating, and dip coating. Flow coating is an environmentally friendly, labor-saving, paint-saving, fast, good mirror effect, and good hole-opening effect. Flow coating can only spray flat workpieces, which is its shortcoming. The development of curtain coating is very fast.
The comparison table of the advantages and disadvantages of PU shower coating and PU spraying
Features: PU shower coating PU spraying mirror effect is good and general, with spraying orange peel, opening effect is good, even and easy to pile holes, operator porter, labor saving 3 times professional oil sprayer
The amount of paint consumed is less paint, and there is no loss and loss of about 50%. The speed is 5 times slower. The space saves space and consumes electricity. Power consumption is 10 times. Waste water. No water curtain cabinet. Sewage. Waste paint mist. No PM2.5. Highly toxic working environment, no waste paint residue
Exhaust gas is doubled and invested 280,000 yuan (dust removal machine + spray room + spray machine) 450,000 (one spray room = 9 oil booths) spray gun + water curtain cabinet + dry room + air pump is a good recruit It’s hard for workers and oilers to find out whether they can construct special-shaped parts or not.
Seven. Which factors do the surface effects of curtain coating depend on?
a. The quality of curtain coating;
b. Accuracy of curtain knife of curtain coating machine;
c. Operational control of the process parameters of coating viscosity, conveyor belt speed, and bottom seam width of the discharge port of the curtain coating machine during curtain coating.
d. Dust-free level of shower room
e. Dust removal effect of double-sided vacuum dust collector
8. What are the conditions for the construction of a spray coating line? What kinds of paints can be sprayed?
1. The furniture must be flat panel type
2. The coating capacity is very large. A 6-person coating team can spray more than 1,000 square meters, and the monthly primer and top coat need to be coated with more than 10,000 square meters
3. The Senren shower coater can spray PU primer, PU topcoat, PE white primer, PE transparent primer, NC primer, NC topcoat, base color repair, UV paint, and water-based paint. Can be used for open matt effect, fully enclosed matt effect, bright mirror effect
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