FOERFARANDE OCH ANORDNING FOER REGLERING AV YTMASSAFOERDELNINGEN AV EN PAPPERSBANA.

摘要

A procedure for controlling the surface mass distribution of a paper web being formed on a dry paper machine, wherein the suction air recirculated to the former is utilized. In procedures of prior art, the surface mass distribution has not been uniform enough. With the aid of the present invention the problem has been solved in that the quantity of air blown to the former is adjusted in the cross-machine direction in order to obtain the desired surface mass distribution.