Introduction to the classification of coating machines

Introduction to the classification of coating machines

Introduction to the classification of coating machines

Aug 14,2021

The brush coater is the oldest coating equipment, originally used in the 1850s to produce coated wall paper using porcelain clay paint. There are 3 different types of brush coating heads: round brush coating head, blanket roll coating head and blanket coating head.

The advent of the air knife coater marked the birth of the modern paper coating industry. The air knife coater overcomes the above-mentioned shortcomings of the brush coater and is quickly promoted, resulting in a sharp increase in the output of coated paper.

The first patent for a knife coater appeared in the 1950s. Since then, the blade coater technology has developed rapidly. According to the different feeding equipment, blade type and blade installation position, the blade coating head is also divided into many types, such as hard blade blade coater, drag blade type blade coater, soft blade blade coater, fountain type upper Material knife coater, short residence knife coater, Bill knife coater, knife roll coater, etc.

Spray coating machine, spray coating technology is a non-contact coating method, using controllable high-pressure spray technology to coat paper or cardboard on one or both sides.

The multi-layer curtain coater only needs to go through a coating operation to give a three-layer structure (bottom layer, absorbent layer) to the inkjet printing paper surface.
And top layer), and can obtain uniform coating on uneven paper surface

The slit coating head includes a coating liquid storage tank; a pump, which is used to pressure the coating liquid in the coating liquid storage tank to the nozzle through a supply pipe; a control part, which is used to control the operation of the pump and the nozzle , The pressure detection part is used to detect the pipeline pressure. When the pressure reaches a predetermined pressure condition, the nozzle removes the coating liquid.