Air knife coater is mainly composed by the eagle beak knife, feeding roll, pressing roll, metering rod, backing roll, air separator, draft fan for separator, high-pressure fan and frame, etc.
This coating device is characterized by a short distance between the air knife backing roll and the feeding roll, and the coated paper is less water migrated and wrinkled after the metering rod. It has the advantages of a compact structure, wide application range, convenience to adjust the coating weight, and so on.
Air knife (eagle beak type)
Composed of the up and bottom lip plates, air knife body, air distribution tube. Up and bottom lips are made of 304 stainless steel, through multiple precision processing. The shape of the air knife blade can make high-speed airflow along the breast roll tangent direction, with the merit of good quality coating, less spray, and so on.
Air knife adjustment
The knife gap can be adjusted between 0.3-1.0mm. The air gap between the knife and the backing roll and angle can be adjusted by adjusting the frame, and air pressure can be adjusted to control the coating weight.
Air knife backing roll
During the coating process, the paper with excess coating color wraps around the backing roll, and the roll surface becomes the supporting surface for the paper to bear the airflow. The cooperation between the air flow and the air knife is used to meter the coating amount. Air knife backing roller Φ270mmx1400mm, roll body is seamless steel pipe, surface hard chrome plated.
The feeding roll
Φ216mmx1400, the roll made of seamless steel pipe, hard chrome plated treatment, with single drive of the three-phase asynchronous motor.
Metering rod
The metering rod device mainly plays the role of the pre-metering of coating amount, by scrap exceeding color on the paper to reduce the air knife metering burden and reduce the color splash. Metering rod diameter Φ50mm, chrome plated, with drive motor.
Color tray
The paint tray is made of stainless steel, there are two trays, a feeding roll tray, and a backing roll tray, respectively for storage and recovery of coating color.
Air separator device
Due to high speed and high wind pressure, in order to prevent the coating splash phenomenon, design the color splash recovery device. The power of the air-separating fan is 2.2Kw.
High-pressure fan
Select a special series of energy-saving coating fans, with a fan power 7.5Kw. The fan is characterized by high wind pressure, low noise, and wind pressure stable.
The frame
Box-type structure, welded, the coater is separated.
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