Analysis on the Causes of Black Patch in Paper Made by Fourdrinierand Its Solutions
Ding Xue-fen · Paper and Paper Making · 2013
This paper expounds the influence of black patch(bright patch) in Fourdrinier to the printing account for the causes of black patch, including equipments and technology etc. Finally, we adjust to the production system and process control,including rate of water loss、jet net point、the steady box、the proportations of pulp、beat ability.Then paper machine system was more stable,the problem had been solved primarily.