公开(公告)号：EP0819043B1

公开(公告)日：2002-02-06

申请号：EP96909415.0

申请日：1996-03-11

申请人： Valmet Fibertech AB

发明人： LUNDGREN, Göran ,  SCHEDIN, Kurt ,  SISLEGARD, Lars-Otto ,  THORBJÖRNSSON, Sven-Ingvar

IPC分类号： B27N3/00

CPC分类号： B27N3/24

摘要： A method for the continuous manufacture of board from lignocellulosic material, where the material is disintegrated to particles and/or fibers, dried, glue-coated and formed to a mat and pressed to a finished board. The formed mat is heated with steam and thereafter compressed to near final thickness, whereafter it is pressed to a manageable board in a calibration section.

公开(公告)号：EP0843615B1

公开(公告)日：2003-04-16

申请号：EP96925238.6

申请日：1996-07-25

申请人： Valmet Fibertech AB

发明人： ERIKSSON, N., Lennart ,  LUNDGREN, Göran ,  SCHEDIN, Kurt ,  SJÖDIN, Kjell

IPC分类号： B27N3/18

CPC分类号： B27N3/24 ,  B27N3/08

摘要： A method for the continuous production of boards of a ligno-cellulosic fiber material wherein the material is broken up into particles and/or fibers. These are dried, glued and formed to a mat. The mat is compressed to a finished board while steam is introduced. According to the present invention, the compression is performed as a single step and the steam is introduced through one or many compression rollers. By injecting steam in this way a sufficient cure is obtained to withstand the spring back characteristics inherent of the fibers so that it is possible to obtain a finished thickness of the board with one single compression step.

公开(公告)号：EP0842021B1

公开(公告)日：2003-04-16

申请号：EP96925237.8

申请日：1996-07-25

申请人： Valmet Fibertech AB

发明人： LUNDGREN, Göran ,  SCHEDIN, Kurt ,  SISLEGÄRD, Lars-Otto ,  SJÖDIN, Kjell

IPC分类号： B27N3/18

CPC分类号： B27N3/24 ,  B27N3/08

摘要： A method for the continuous production of boards having a lignocellulosic fiber material wherein the material is broken up into particles and/or fibers that are dried, glued and formed and pressed to a finished board. The mat is pre-compressed while steam is introduced in such a limited amount during the pre-compression that the temperature of the fibrous mat increases to a value within an interval of 60-95 °Celsius. In this way, the spring back characteristics of the fiber mat is reduced so that its resistance to compression is reduced and the thickness can be reduced more in the pre-compression while the temperature is not so high to initiate a curing process.