Head Box

High-pressure (closed) headbox runs with an air cushion and with deflocculation rolls. It is used particularly on paper machines intended for a speed up to 600 m/min. with diverse substances, i.e. with different flow rates and consistencies. The headbox provides uniform distribution of paper stock on a PM longitudinal wire. 

The headbox is made of stainless steel. It comes in a shape of a box. Its inside surfaces, coming in contact with the stock, are electrochemically polished. The turbulent stock flow is enabled by a diffuser board and defloculating rolls with adjustable speed. There is a rotary antifoam and rinsing shower pipe installed inside the headbox. The headbox stock supply is provided through an inlet body or diffuser plate.

The headbox precise design and machining of the top lip enable its adjustability in two directions, i.e. upwards and downwards. The bottom output edge can be slipped out. The lip provides certain vertical flexibility which allows fine profile adjustment. The top parts of the top lip spindles are equipped with worm gears with micrometric indicators that can be preset with individual accuracy of 0,01 mm or with stepping motors connected to the control system of the machine.