It is worth mentioning that the silk screen coating machine was born in China. In the Western Han Dynasty, it had a history of coating fabrics and leather. The modern roller coater is based on the invention of Guttenberg and the gradual improvement of rotary printing machine.
Precision coating develops slowly with the rapid development of modern electronic industry. Precision coating technology was proposed by Roy downdown, the founder of ASI in 1970.
With the development of the United States, Japan and European countries, precision coating technology tends to be mature, but Taiwan still lacks in technology. The obstacle of restricting the import of air floating oven in our country lies in its high price. The representative manufacturers of imported air floating oven are ASI, MEGTEC, dawis standard, Hirano, Inoue, Toray and BMB of Switzerland.
Precision coater precision is defined as the required coating accuracy error is only ± 1 μ. Precision coater is relatively mature in Germany, the United States and Japan. The main features of the precision coater are: slit extrusion, precision leveling, air floating drying, coating head with anti body vibration, magnetic damping, air-liquid buffer bracket.
The main functions of modern precision coater are as follows:
The slot die extrusion coating head is developed to the multi-layer jet film wall attachment effect controlled by distributor, and multi-layer coating with different functions is coextruded at one time.
Laminar flow, air floating, dust-free drying. With solvent recovery system.
Vacuum suction roller traction.
For plastic film, soft X-ray coating thickness detection, closed-loop control servo motor precision feeding system.
CCD digital camera defect detection system.
The difference between precision coater and common coater is as follows:
Extrusion die and coating head
Isolation of fuselage vibration
Laminar air floating drying
Online coating thickness control
The error is ± 1 μ M
Can be ultra-thin coating up to 0.5-1 μ ultra-thin coating
Bar type troweling is accurate and easy to clean
Precise flange tension control
