FORMING SECTION

摘要

A forming section comprises a lower wire loop (11), which constitutes a single- wire section (T) following a breast roll (12). The beginning of the single-wire section comprises a first dewatering zone (Zl) which consists of at least one stationary, first forming shoe (40) and a pulsating strip cover (50) following it. In the first forming shoe, there are a leading edge and a trailing edge as well as a cover provided with through holes and underpressure affecting through the holes of the cover. The holes are constituted of openings or slots substantially in the longitudinal direction of the machine, whereby non-pulsating dewatering is applied on the stock travelling on top of the lower wire. The forming section further comprises a headbox (30) by means of which a pulp suspension jet is fed at an impact point after the leading edge of the first forming shoe. The cover of the first forming shoe is straight at least in the area between the impact point of the pulp suspension jet and the trailing edge of the first forming shoe. With such an arrangement, the impact of the pulp suspension jet on the forming wire is controlled in a better way, whereby the production speed of the forming section can be increased.