Factory Direct Rdh2-03/500 immersion coil coater double comma drawdown blade three temperature zone drying

Rdh2-03/500

Soaking coil coater

The equipment adopts double comma drawdown blade Spreader head and bath design, Spreader wet thickness range of 0.1~ 3mm, drying temperature up to 250 ℃, integrated three independent temperature zone drying system, to achieve full automation process.

Product Introduction

RDH2-03/500 immersion bath coil coating machine is a multi-functional, high-precision coil coating machine for high-end experiments and low-volume production. The equipment adopts a modular design, integrating a double comma scraper coating head, a three-stage independent temperature zone drying system, a full servo tension control and an automatic correction system, which can realize the fully automated process from substrate unwinding, bottom pre-coating, precision baking, surface coating, final drying to accurate lamination and winding. The equipment is especially suitable for process development and performance verification of new materials such as adhesives (such as PSA), optical adhesives, and polymer functional coatings on flexible substrates (such as release paper, PET, PI, copper foil, etc.).

The plan is brief

Unwinding (with servo control) → comma scraper coating head (bottom roller with heating function - heating rod) → immersion tank (500x200x150 depth) + extrusion roller (extrusion roller bottom roller is stainless steel material, upper roller is rubber roller) extrusion bottom lamination layer 1 layer, release paper release reel installation tension controller) → oven (total 2 meters, 1 meter x 2 sections) temperature up to 250 °C, After coming out, the second stage of coating (the coating head is the same as the first section) enters the rear section of the 1-meter oven→ laminating (the laminating bottom roller is installed with a private service motor) → a set of laminating standard devices, correcting the edge - winding, (description: a set of tension control system for the whole line, temperature: 250°C adjustable, material width 500mm, infrared heating device, a 1-meter oven is installed in two sensors, a control sensor, and a temperature real-time display sensor

Detailed technical specifications of the unit module

3.1 Unwinding system

3.1.1 Main unwinding unit

Structure form: single station, passive unwinding, air expansion shaft clamping (Φ75mm or 3 inches).

Tension control:

Actuator: Equipped with a high-response servo motor and a precision reducer, forming an active unwinding mode.

Detection feedback: The pendulum roller or tension sensor is used for real-time tension detection, and the signal is fed back to the PLC.

Control mode: Constant tension unwinding or taper tension control can be realized, and the taper curve can be set.

Guiding System (EPC):

Type: Ultrasonic or CCD photoelectric automatic guidance system.

Accuracy: ±0.5 mm.

Mounting Position: Located after unwinding, in front of the coating head, ensuring that the substrate enters the coating unit with neat edges.

3.1.2 Release paper unwinding unit

Structure form: independent platform, passive unwinding, inflatable shaft clamping.

Tension control: Equipped with independent magnetic particle tension controller or small servo tensioner, the tension value is directly set and displayed on the panel, and linked with the tension system.

3.2 First Coating Unit (Bottom Coating)

3.2.1 Comma scraper coating head

Squeegee type: R-shaped comma scraper, all stainless steel.

Adjustment mechanism:

Fine-tuning method: The micrometer is used at both ends with an oblique block structure to achieve precise adjustment of the gap between the scraper and the back roller.

Adjustment range: 0 ~ 3 mm.

Parallelism: Parallelism error ≤ 0.005 mm over the entire length.

Back Roller:

Specification: Φ200mm active steel roller.

Surface treatment: Mirror hard chrome plated, hardness HRC≥62, roughness Ra≤0.2μm.

Heating function: Built-in high-density stainless steel electric heating rod, using rotary joint for power supply and temperature measurement.

Temperature control: Independent PID control, range: room temperature ~ 120°C, accuracy ±2°C.

3.2.2 Soaking coating tank

Material: SUS304 stainless steel, mirror polished inside and outside (Ra≤0.4μm).

Dimensions: 500mm (L) x 200mm (W) x 150mm (H).

Lifting mechanism: manual/pneumatic lifting, easy to clean and thread.

3.2.3 Squeeze roller device

Function: Preliminary leveling and compaction of the coated wet film to control the penetration and thickness of the coating.

Lower roller: SUS304 stainless steel mirror roller, active drive.

Upper roller: silicone roller, Shore hardness 60A±5°, smooth surface. Pneumatic pressurization, pressure gauge display, pressure adjustable (0 ~ 0.6 MPa).

Adjustment: Quick disengagement for easy operation.

3.3 Drying system

3.3.1 Structural layout:

One section of drying zone: 2 sections of 1 m each for pre-curing/drying after the bottom coat.

Second stage drying zone: 1 section of 1 meter each, for final curing/drying after surface coating.

3.3.2 Box structure:

Shell: High-quality cold-rolled plate with surface spraying.

Liner: SUS304 stainless steel plate.

Insulation layer: Made of high-temperature aluminum silicate fiber cotton, thickness ≥ 50mm, to ensure that the temperature of the shell rises ≤ the ambient temperature is +10°C.

3.3.3 Heating and Air Circulation System:

Heater: Built-in finned electric heating tube, made of high-temperature resistant stainless steel.

Fan: High-temperature resistant centrifugal circulation fan to ensure the uniformity of hot air in the box.

Air duct design: upper and lower convection or orifice plate type air supply to ensure that the uniformity of wind speed and air temperature within the effective width is ±5%.

3.3.4 Exhaust system:

Exhaust fan: Independent high-temperature resistant explosion-proof axial flow fan.

Air Volume Adjustment: Equipped with a manual air control valve, the exhaust air volume can be adjusted according to the volatilization of solvents.

Exhaust gas interface: DN150 flange interface, connected to the customer's on-site exhaust gas treatment system.

3.4 Second Coating Unit (Surface Coating)

The configuration is exactly the same as the first coating unit and is standard to ensure process repeatability and scalability.

3.5 Lamination and correction system

3.5.1 Laminating and unwinding:

Structure: Independent platform, inflatable shaft clamping.

Tension control: Magnetic powder brakes control the unwinding tension.

3.5.2 Laminating composite mechanism:

Bottom Roller: Active drive, equipped with servo motor, ensuring precise synchronization with the main line speed.

Gluing roller: silicone roller, pneumatically pressurized.

3.5.3 Laminated Guidance (EPC):

Type: Photoelectric automatic deviation correction.

Function: Real-time detection of the edge position of the laminate and the main substrate, driving the guiding slide to ensure the lamination alignment accuracy ± 0.3 mm.

3.6 Winding System

Structure form: single station, central winding.

Drive control: equipped with high-torque servo motor and precision reducer.

Tension control:

Mode: Floating roller feedback or tension sensor is used to achieve constant tension or taper tension winding.

Taper control: The taper coefficient (0%-100%) can be set on the HMI to achieve a roll shape with a tight gradient from the inside out.

Auxiliary device: Equipped with surface flattening rollers to prevent wrinkles during winding.

3.7 Transmission and control system

3.7.1 Transmission System:

Driving points: main unwinding, coating back roller, extrusion lower roller, transition roller of each section (active), laminated bottom roller, winding. A total of about 8 servo drive points.

Synchronous control: Realize the synchronization of electronic gears between each servo axis through PLC program, and the speed ratio can be flexibly set on the HMI.

3.7.2 Electrical Control System:

Core controller: Siemens/Mitsubishi/Omron series PLC.

HMI: 10.1 inch and above color touch screen, Chinese and English interface.

Main control functions

Whole line linkage control: one-click start-stop, slow rise and fall, emergency stop.

Multi-stage tension control: realize independent tension setting and closed-loop control of four stages of unwinding, coating section, drying section and winding.

Fully automatic temperature control: 5 independent temperature control zones (2 back rollers + 3 ovens).

Recipe management: No less than 100 sets of process recipes can be stored/recalled.

Data Logging and Alarm: Record key parameters (speed, tension, temperature) in real time and generate historical curves; Complete fault diagnosis and alarm history.

4. List of key components configuration    

Supporting measures

1. Public works: The supporting public works required for the following equipment must be prepared before our installers arrive at the site.

5.List of key components configuration  

1. Equipment body

Deliver the information

Spare Tools

Packing list：machine x1, manual x1, certificate x1, warranty card x1

[Note]Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.