Screening / Fractionation

Screening systems are used in various phases of stock preparation and papermaking for all kinds of furnish. They remove unwanted material like shives and splinters, fiber bundles, sand, stickies and plastics. The production capacities is from 10 to >1000 tons/day. The tasks of the screening system can vary, with the focus on maximum stickies and trash removal, minimal fiber loss, system monitoring and protection, etc.

The purpose of fractionation is to separate the stock fibers according to various characteristics, such as long and short fibers and stiff and flexible fibers. Depending on requirements, each fraction is then used directly for papermaking or undergoes further treatment.