Steam box of a paper machine

摘要

A steam box in a paper machine, the steam box comprising a main steam zone (6) and at least one side steam zone (7) through which steam is blown to a paper web (5). The side steam zone (7) is placed in a side section of the steam box and arranged to form a curtain in order to prevent air from entering between the steam box (1) and the paper web (5) from outside the steam box and/or to prevent steam from exiting between the steam box (1) and the paper web (5). Steam is supplied to the side steam zone from a steam chamber (8) through a side steam zone valve (15) arranged inside the steam box (1). <IMAGE>