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Model: SL-TRSL
The single roller coater uses a single-application rubber roller and a doctor stainless steel roller that rotates counterclockwise to evenly apply liquid paint to the board. It features an auto-lifting function that prevents paint from piling up at both ends simultaneously. Coloring coating machines work well for thick coating on flat surfaces, especially on large boards.
Application Materials:
Application Coatings:
For thick-film color application on flat boards, coating pressure and roller timing need to work together. The SL-TRSL uses one polyurethane application roller with a doctor stainless steel roller rotating counterclockwise, bringing the coating into contact with the board only during the active coating cycle.
The operating sequence is controlled from the moment a board enters the conveyor. Photosensitive sensors and encoders detect the incoming panel, while the PLC calculates the signal and commands the lifting mechanism. Roller height is set according to board thickness; once the panel reaches the working position, the roller lowers to the coating surface and returns upward after the pass.
Consistent roller contact depends on the relationship between the polyurethane application roller and the doctor steel roller. A push-screw compensator sits beside the working rollers, allowing the gap to be balanced mechanically and helping correct deviation caused by vibration during operation. Stable adjustment limits uneven coating, paint leakage and unnecessary coating consumption.
The polyurethane roller is made from cast polyurethane elastomer for use with self-drying color coatings. Its surface is intended to maintain paint transfer without swelling or cracking under the stated application conditions, while routine cleaning can be carried out with paint thinner or alcohol.
Roller maintenance is handled through a quick-disassembly structure. NSK bearings with ceramic protective shields connect the roller to the motor; after the coupling and bearings are released, the rubber roller can slide out through the opening in the upper mounting plate for grinding or replacement.
Unused coating is collected through the return trough and sent back into the process after passing through the pump unit. The paint circulation assembly includes a stainless steel collection container, pump and connected hoses positioned beside the machine.
Keeping excess material in circulation reduces the amount of coating left around the application section and supports continuous coloring work without relying on one-way paint consumption.
Working width, working thickness and feeding direction can be customized to the product and production layout. Roller materials can be adapted to different base materials and paints, while rotation direction and conveyor construction can be selected according to the required coating effect and conveying conditions.
Custom single roller coaters of different sizes are available for various products, and the parameters will vary accordingly. Please contact us.
The single roller coater is equipped with a paint circulation system. Excess paint not absorbed by the substrates can be quickly recovered through the return trough and reintroduced into the coating process after being pressurized by the pump unit, significantly reducing the user’s consumable paint costs.
To achieve rich surface effects, the single roller coater can be combined with other coating machines, drying ovens, and surface treatment equipment to form flexible modular systems. For instance, when combined with an excimer UV curing machine, it can achieve a special coating with a baby-skin-like texture.
Electrically lift the height of the roller to a suitable level for the thickness of the board at first. The conveyor entry detects each board and converts the signal into the PLC for calculation. PLC controls the roller to lower immediately and to lift homing after coating, enabling the single roller coaters to achieve consistent coating effects.
The polyurethane rubber roller, fabricated from high-performance cast polyurethane elastomer, which has excellent compatibility with self-drying color coatings, ensures uniform paint transfer and produces brilliant coating effects without causing the roller material to swell or crack. The surface can be easily cleaned with paint thinner or alcohol.
Each roller is connected to the motor by an NSK bearing with a ceramic protective shield. The design incorporates a quick-disassembly structure, allowing for rapid, convenient grinding or replacement of the rubber roller by removing the coupling and bearings, then sliding the roller out through the notch in the upper mounting plate.
When adjusting the gap between the application rubber roller and the doctor steel roller, this screw compensator device can easily balance the setup to maintain a consistent gap, preventing gap deviation caused by vibration during operation. Stable gap control effectively avoids uneven coating thickness, paint leakage, or excessive paint consumption.
Through the coordinated control of photosensitive sensors, encoders, PLCs, and cylinders, the system accurately identifies incoming boards. Driven by a cylinder with a buffer unit, the roller group is instantly lowered to a position just touching the board surface, adapting to boards of different thicknesses and avoiding paint buildup at both ends during coloring coating.
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 single roller coaters to fit the dimensions of your products and spaces.
Customize single roller coaters to fit different base materials and paints.
Customize single roller coaters to achieve different coating effects and thickness.
Customize single roller coaters for different products and conveying requirements.
Customize single roller coaters to meet diverse functional and application needs.
Customize single roller coaters to optimize electricity consumption across different countries.
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