A method and a multi-platen press for the practice of the process for the
manufacture of wood material boards, especially OSB boards, in which an
endless mat is formed from a wood chip and binding agent mixture. The mat
is introduced between the heated press platens of a multi-platen press,
the press platens have steam openings directed at the mat and by steam
and contact heat from press platens they are heated, pressed and cured
into wood material boards. The mat, formed from a wood chip and phenolic
resin mixture, is introduced into the level(s) of a single-stage or
multi-stage press and deposited therein. After a light precompression,
the introduction of a small amount of steam with a low steam temperature
takes place through the press platens only in the cover layers of the
mat. The mat is quickly compressed and cured to the end thickness of the
board.