What is the purpose and principle of the coater?

The coating machine is mainly used for the surface coating process production of film, paper, etc. This machine is used to apply a layer of adhesive, paint or ink with specific functions to the rolled base material, and then dry it before winding; The surface coating equipment used for processing paper in paper machine usually has two types: single coating machine and paper machine coating machine. The separate coating machine is mainly composed of coating, leveling and drying parts.
Working principle and characteristics of coating machine:
The coating machine is used for the coating production of BOPP sealing adhesive tape. The rolled base material is coated with a layer of adhesive, paint or ink with specific functions, and then dried before winding. It uses a special high-speed coating head, which can effectively reduce the generation of bubbles. The winding and unwinding of the coating machine are equipped with a full-speed automatic film receiving mechanism, and the tension closed-loop automatic control.
The working process of the coater: apply a layer of adhesive, paint or ink with specific functions to the rolled base materials, such as paper, cloth, leather, aluminum foil, plastic film, etc., and dry them before winding.
Working principle of coating machine: The working principle of automatic coating machine for screen printing and plate making is the same, but its performance varies according to different models and different manufacturers. The screen coater is equipped with a device that can clamp the screen frame on the vertical frame. The front and rear of the screen area is a horizontal coating mechanism, which is composed of the coating tank and the mechanical or pneumatic components that control the angle and pressure of the coating tank.
The two ends of the coating mechanism are installed on the vertical support arm of the coating machine, and the coating mechanism moves up and down through the transmission of belt, chain or cable to coat along the surface of the screen. The transmission mechanism is connected to the servo or variable frequency motor to make its operation stable and accurately control the position of the coating mechanism.
Before coating, load the clean and tensioned screen from the front of the coating machine, and some models can also load the screen from the side. Among the models designed for large-format screen frame, side mounting is more common, because the screen frame is large and bulky, and side mounting can reduce the lifting and moving amount. When the automatic screen coater and other automatic screen processing equipment (such as cleaning equipment, regeneration equipment, drying device and developer) are running online, it is more convenient to mount plates from the side. No matter how the screen plate is installed, once the screen plate is in the correct position, the pneumatic clamping device or mechanical clamping device will close and lock the screen plate. In order to make operation more convenient, many models have pedals to control the action of the plate holder. The operator can free his hands to control the screen plate.