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Dryer cylinder coating establishing device and controlling method thereof

A control method and coating technology, applied in the field of papermaking, to achieve the best wrinkle effect

Active Publication Date: 2013-08-28
金红叶纸业(湖北)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, these factors are different for each paper machine. Even for the same paper machine, these factors will more or less vary depending on the specific paper type and the specific production environment, so there is no fixed one. The variable coating can be applied to any paper machine to achieve moderate hardness, good peeling and sticking performance, and durable performance

Method used

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  • Dryer cylinder coating establishing device and controlling method thereof
  • Dryer cylinder coating establishing device and controlling method thereof

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Experimental program
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Effect test

specific Embodiment 1

[0045] Please refer to figure 2 , the papermaking raw material slurry enters the paper machine head box 1 with a certain concentration, and the slurry forms paper 7 on the wire part 2, controls the dehydration amount of the paper machine wire part 2, felt part 3 and press part 4, and then transfers to the drying cylinder 5 to dry. Generally speaking, when the drying cylinder 5 is wrinkled after drying, the water content of the paper 7 is in the range of 1-20%. In this embodiment, the water content of the paper 7 is controlled at 3% when it is wrinkled.

[0046] Please also refer to figure 1 , the coating 17 is established on the surface of the drying cylinder 5 by means of the coating material supply device 171 and the spraying device 15 . In this embodiment, two kinds of cylinder sticking agents are selected, and the hardness of the two kinds of cylinder sticking agents is different, and one oily peeling agent is selected. In addition, MAP (Mono ammonia phosphate) is sele...

specific Embodiment 2

[0049] Please refer to figure 2 , the papermaking raw material slurry enters the paper machine head box 1 with a certain concentration, and the slurry forms paper 7 on the wire part 2, controls the dehydration amount of the paper machine wire part 2, felt part 3 and press part 4, and then transfers to the drying cylinder 5 to dry. In this embodiment, the moisture content of the paper 7 during creping is controlled at 10%.

[0050] Please also refer to figure 1, the coating 17 is established on the surface of the drying cylinder 5 by means of the coating material supply device 171 and the spraying device 15 . In this embodiment, two kinds of cylinder sticking agents are selected, and the hardness of the two kinds of cylinder sticking agents is different, and one plastic release agent is selected. In addition, DAP (di ammonia phosphate) is selected as the protective agent for the drying cylinder 5 to protect the drying cylinder 5 from corrosion caused by the wet end. Contro...

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Abstract

The invention provides a dryer cylinder coating establishing device and a controlling method of the dryer cylinder coating establishing device. A feedback device for operation states after paper wrinkles is arranged to provide an induction signal for regulating a ratio of raw material content of a coating, so that properties of the coating are regulated in a real-time and dynamic mode, the paper always has a good wrinkling effect, and the situation that fluctuation of various factors which affect the properties of the coating in the actual production process can affect the wrinkling effect is avoided.

Description

technical field [0001] The invention relates to the field of papermaking, in particular to a device for coating a coating on the surface of a drying cylinder when drying paper with a drying cylinder, and a method for controlling the coating on the drying cylinder. Background technique [0002] In the manufacturing process of creped paper, the softness, bulk, stretchability and absorbency of thin paper are generally achieved by Yankee drying and scraping. During the creping process, the quality of the coating on the drying cylinder affects the creping of the paper and determines the quality of the tissue paper to a large extent. The method of forming the coating in the prior art is usually to mix the cylinder sticking agent, stripping agent and modifier, etc., and then spray it onto the surface of the drying cylinder through several nozzles on the spraying pipe. [0003] Generally speaking, the durability and hardness of the coating are two important indicators that affect t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21F5/02
Inventor 黄锦华何林燕杨晓静
Owner 金红叶纸业(湖北)有限公司
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