Bales of dry pulp are normally used. The bales are slushed in heated tap water to a concentration of approximately 4%. Ready-made stock can also be transported in tank trucks from mills to the FEX system.

 

The stock preparation can be done in either the low consistency refining laboratory or in the fractionation system. It can be prepared in a batch or a continuous process. If a batch process is used the refined stock is mixed in storage tanks before being pumped the paper machine. This procedure guarantees stable stock properties during a complete run. A continuous process prevents the stock from possible ageing phenomena.

 

After addition of two large tanks, the stock storage system includes seven tanks, with a total capacity of 540 m³, allowing a maximum of 20 tons of stock. This makes it possible to perform a full day's trial with e.g. liner at high production rates, without the need of recirculating pulp. Stock in the storage tanks can be heated by direct addition of steam.

 

Paper produced at the FEX paper machine, with the exception of paper samples for testing and analysis, ends up in the press broke chest where it is diluted and pumped to screw presses and finally collected in a container. A waste-paper company delivers all paper from FEX to a paper mill for recycling.