Types of Coating Machines and Advantages and Disadvantages

      Coating machine we then the last article have understood, then we this article will follow the SuZhou YiWeiGao Machine Manufacturing Co., Ltd. to talk about the types of coating machine and its characteristics!

      First of all, the classification, what are the classifications of the coating machine? Coating operations according to the coating machine and paper machine connection is divided into in-machine and out-of-machine type, according to the number of coating is divided into single-layer coating and double-layer coating and printing. In-machine coating is equipped with a coating machine on the paper machine, so that papermaking and coating continuously; off-machine coating is a coating machine and paper machine are separate, for coating operations precision coating machine mainly roller coating machine, air knife coating machine and scraper coating machine three.

      At the same time with the advantages and disadvantages of the coating machine, such as roll-type coating machine is a coating roller to the paper surface with coating, in-machine coating to such coating machine. The advantages of the roll-type double-sided coating machine is a simple structure, can be coated on both sides together, as an in-machine coating machine and has a more suitable coating speed, and is not easy to generate coating streaks. Defect is not easy to get the air knife coating machine coating thickness, also can not get the scraper coating machine as smoothness and gloss; air knife coating the advantages of a thicker coating, coating layer is more uniform, coating is not easy to break the paper, especially suitable for pressure-sensitive coating coating, defects can not be coated with a high solids content, and the air knife is easy to be partially blocked by the dry coating, resulting in coating traces; scraper Coater's advantage is that the coating surface is very flat, not affected by the appearance of the original paper; does not require the coating soft and fluidity, can be coated with high solid content coating and high-speed coating, defects are when debris mixed into the coating, easy to get stuck in the mouth of the knife, leaving long stripes on the paper surface, and other squeegee blade is easy to wear and tear, it is necessary to often replace; coating can not be too thick in general, the thickness of the original paper is also more stringent requirements of uniformity.