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Method and apparatus for film coating a moving paper or board web supported by a belt to form a coating application zone with adjustable length
Method and apparatus for film coating a moving paper or board web supported by a belt to form a coating application zone with adjustable length
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机译:用于对由皮带支撑的活动纸或纸板的薄膜进行涂膜的方法和设备,以形成长度可调节的涂料涂覆区
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摘要
A method and apparatus for coating a paper or board web, wherein the web to be coated is brought to a film transfer coater and taken to a nip between the film transfer roll of the coater and its backing roll, and coating mix is applied onto the surface of the film transfer roll. The web is taken through the nip between the rolls and the rolls are turned, whereby the coating mix applied onto the applicator roll is at least partly transferred onto the surface of the web. The web is supported through the nip by means of a belt traveling at the same speed as the web, the belt having been arranged to travel on the backing roll. The web is taken onto the surface of the belt prior to the nip and separated from the belt after the nip, and it is pressed against the film transfer roll by means of the belt. The length of the path where the web and the film transfer roll are in contact with each other is controlled by varying the position of the web and the belt.
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