Characteristics and application of precision coater

　　 With the development of modern electronic industry, precision coating has been gradually developed. After the fine painting technology in the United States, the development of Japan and Europe has been quite mature, while the technology in Taiwan is relatively insufficient. The obstacle to the localization of imported air flotation furnace lies in the high price. The material basis of precision coating process is precision coating equipment. The main characteristics of precision coating are: slot extrusion, precision leveling rod, air drying, coating damping magnetoresistive head, and gas-liquid buffer support.

Precision coating refers to coating a layer of adhesive on the film surface and drying it with hot air through an oven to form a bonding film. According to the needs of the coating, a single coating and a bonded demoulding material are applied on the substrate to form a single coating protective film; It can also be coated on both sides to form a double coating protective film. Development process of precision coating control system. With the sustainable development of China's economy, the application of coating products has become more and more extensive, and the production capacity has also been continuously improved. The domestic equipment manufacturing industry has also ushered in a vigorous development.
Coating machine control system based on magnetic powder brake. In the early days, the control system of the coater was mainly realized by the peripheral controller. The traditional magnetic powder brake was used for discharge, without lead-in device. The glue and cooling were stepless speed regulation, and the materials were magnetic powder clutch. Under the given structure and dynamic mode, it is difficult to achieve high-speed and high-precision coating processing.
Control system of coating machine based on frequency conversion speed regulation. The traditional passive feeding mode is changed to the active feeding mode. The PLC calculates the measured speed value and hands the analog quantity to the frequency converter, so as to realize the accurate control of the variable frequency motor. The use of the simulation signal determines the attenuation and interference of the signal in the transmission process, which will affect the accuracy and tension of the control. Control system of coater based on sub servo drive; The so-called sub servo drive, in fact, simply uses the servo drive to replace the variable frequency drive of one or several systems. Its control idea is still in the way of variable frequency drive. Although it looks like servo on the surface, it is called secondary servo control because the application of servo communication and position control is not deep enough.
Control system of coating machine based on full servo drive. The system adopts perfect servo drive, makes full use of servo speed response characteristics and servo communication advantages, and combines positioning mode to effectively reduce signal attenuation and interference and improve control accuracy. This is a new control system based on servo performance.
Main functions of modern precision coating: SLOTDIE extrusion coating head is adopted and controlled by distributor. Due to the influence of multi-layer spray plate wall effect, multi-layer coatings with different functions are co extruded for the first time. Layered, air floated, dust-free and dry. Suction drum traction of auxiliary solvent recovery system. Plastic film, soft X-ray coating thickness detection, closed-loop control servo motor precision feed system.
The difference between the precision coater and the ordinary coater: the thickness control error of the extrusion die coating isolation machine body vibration laminar air flotation drying online coating is ± 1 μ Within 0.5-1 for ultra-thin coating μ The ultra-thin coating wire rod coating is accurate and easy to clean. Precision flange tension control. Precision coating application: precision coating application on lithium ion battery ---- thermal insulation film. Battery isolation membrane, porous PP membrane, single microporous membrane; Graphene is a single conductive nano material.