The coating machine is used for the coating production of BOPP sealing adhesive tape. The rolled substrate is coated with a layer of a specific function of glue, paint or ink, etc., and dried after winding. It adopts a special high-speed coating head, which can effectively reduce the generation of bubbles. The winding and winding of the coating machine are equipped with a full-speed automatic film connecting mechanism, and the tension is automatically controlled in a closed-loop.
The working process of the coating machine: the base material of the roll, such as: paper, cloth, leather, aluminum foil, plastic film, etc., is coated with a layer of glue, paint or ink with a specific function, and then the roll is dried.
The working principle of the automatic coater: The working principle of the automatic coater for screen printing is the same, but its performance varies according to different models and different manufacturers. The screen coating machine is provided with a device that can clamp the screen frame on the vertical frame. The front and back of the screen area are horizontal coating mechanisms, which are composed of coating slots and mechanical or pneumatic components that control the Angle and pressure of the coating slots.
Both 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 the belt, chain or cable, and is coated along the surface of the screen. The drive mechanism is connected to a servo or variable frequency motor, allowing smooth operation and precise control of the position of the coating mechanism.
Before coating, the clean, stretched screen plate from the front of the coater, some models can also be installed from the side of the screen plate. In models designed for large screen frames, side loading is more common, because the frame is large and bulky, and the side loading can make the lift and lift less. When the automatic screen coater is running in line with other automatic screen processing equipment, such as cleaning equipment, regeneration equipment, drying equipment and developers, it is more convenient to mount from the side. No matter how the plate is installed, once the plate is in the correct position, the pneumatic clamping device or mechanical clamping device is closed to lock the plate. In order to operate more easily, many models have a foot pedal control plate clamp action, the operator can free hands to control the screen plate. After installing the screen plate, the automatic coating machine is filled with the corresponding emulsion, and then coating can begin. Depending on the function of the control system and equipment, the equipment can simultaneously coat both sides of the screen. There are two coating methods, one is to coat the sensitive emulsion on the screen through multiple wet pressing wet operation; Or add a drying process after each coating. A machine for quantitative coating of liquid (or melt) polymer materials such as adhesives or coatings on a material surface.
