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Model: SL-TRD
The roller coating machine is widely used for coating flat products. A rubber roller and a doctor steel roller form a coating unit. The machine pumps the liquid paint, then recycles it, evenly coating the flat surface. All power parts are controlled by frequency conversion. The HMI touchscreen enables intuitive, efficient control of the entire roller coating machine.
Application Materials:
Application Coatings:
Liquid coating enters the working section and is transferred to the moving panel through a controlled roller assembly. Rubber and doctor steel rollers work together to meter the coating before it reaches the surface, while a dedicated return path sends unused material back into circulation. You can use the system for fiber cement board, magnesium oxide board, calcium silicate board, wood, veneer, glass, metal, plastic, PVC, marble and ceramics, with UV, PU, PE, NC, AC, water-based, fluorocarbon and adhesive coatings available for different finishing processes.
Coating quality starts at the contact point between the rollers. An EPDM application roller carries the liquid film toward the substrate, while a chrome-plated doctor steel roller controls the coating layer through its working gap. A separate steel scraper removes excess material from the roller surface before transfer.
EPDM rollers are produced through a controlled manufacturing process and ground through the central section for more even coating distribution. Chrome-plated steel rollers undergo precision machining, electrolytic polishing and hard chrome plating, with surface roughness maintained at Ra≤0.8 μm.
A micro-adjustable steel scraper sits along the roller surface. Small changes to the scraper gap control how much coating remains on the roller, helping form a more uniform film before material reaches the panel.
Visible adjustment points run along the scraper assembly, while the rigid metal structure holds the working position in place. Roller and scraper settings can be coordinated with the coating material and required surface finish.
Unused coating returns through the machine’s return groove and moves back toward the supply system through a high-flow pump. This circulation system keeps liquid material inside the coating process rather than sending excess paint into the surrounding workspace.
Paint utilization can reach 99%, while liquid coating avoids the airborne spray generated by atomized application.
Separate motors and precision reducers serve the core transmission components. Frequency-conversion control coordinates their operation, allowing roller movement and related mechanical functions to run through independent drive sections rather than one shared transmission path.
Continuous panel production can connect coating with upstream surface treatment and downstream drying or curing. You can place the machine within a UV roller coating line when UV primer or topcoat forms part of the finishing process.
A broader production route can also combine the coating section with panel cleaning equipment and paint drying equipment, keeping material movement continuous between processing stages.
Working width, working thickness and feeding direction can be adjusted around your production layout. Roller materials can be selected for different substrates and paints, while conveying arrangements and rotation direction can be configured according to the intended coating process.
Custom roller coating machines of different sizes are available for various products, and the parameters will vary accordingly. Please contact us.
The roller coating machine has a liquid coating circulation function, which increases the coating utilization rate to 99% through the body's return coating groove and high-flow pump. The use of liquid coating reduces the emission of volatile organic compounds and reduces air pollution.
The stable mechanical structure ensures the precise coating of various flat products. The main moving parts all use separate motors, reducers, and frequency-conversion control, providing the best accuracy and stability. Customized roller coating machines can achieve coating accuracy within 7.5%.
Equipped with an automatic control system, the roller coating machine reduces manual intervention, can be seamlessly connected to paint drying ovens and surface treatment equipment to achieve continuous production. Customized roller coating machines can reach production speeds of up to 60 m/min.
EPDM rubber rollers, due to their highly saturated molecular main chain structure, possess strong chemical stability and excellent resistance to solvents and corrosion, and are not easily swollen by solvents. Every rubber roller is made by a standard process and strict checks, grinding the middle to a higher precision to ensure the entire roller coating is evenly distributed.
Chrome-plated steel cylindrical rollers are manufactured through multiple precision machining processes. After electrolytic polishing and hard chrome plating, the roller's surface roughness is maintained at Ra≤0.8μm, featuring excellent wear resistance and surface flatness. By adjusting the gap between the roller and the application roller, the coating film thickness can be precisely controlled.
Equipped with a high-precision adjustable steel scraper, a micro-adjustment mechanism allows precise control of the gap between the scraper and the roller surface with minimal tolerance, efficiently removing excess coatings and forming a uniform, dense thin coating layer on the roller surface, preventing uneven coating or color differences caused by the roller coating machine.
Adopting a modular, independent transmission design, each core transmission component is equipped with an exclusive drive motor and precision reducer, ensuring one-to-one matching between the power source and the transmission link, avoiding power loss and interference caused by multi-component linkage, and achieving the continuous and stable coating process.
When your substrate, coating, or space is unusual, or when you have unique technical requirements, our custom services may be the best way to help you achieve your goals.
Customize roller coating machines to fit the dimensions of your products and spaces.
Customize roller coating machines to fit different base materials and paints.
Customize roller coating machines to achieve different coating effects and thickness.
Customize roller coating machines for different products and conveying requirements.
Customize roller coating machines to meet diverse functional and application needs.
Customize roller coating machines to optimize electricity consumption across different countries.
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