A New Screening Concept and the Latest Mill Application in Thick Stock Screening

The main demands for paper and board production are the cleanliness of the end product and run ability of the machine. Therefore the stock fed into the machine is cleaned in several position before it enters the headbox. The expectations for the stock cleanliness are putting the equipment manufacturers to face a very demanding and challenging task. A new method to increase the cleanliness of the stock is the socalled thick stock screening, where the stock is screened with narrow slots before it enters the short circulation.