A METHOD OF CONTINUOUS PRODUCTION OF LIGNOCELLULOSIC BOARDS

    公开(公告)号:CA2226508C

    公开(公告)日:2006-05-23

    申请号:CA2226508

    申请日:1996-07-25

    Abstract: 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 .degree.Celsius. In this way, the spring back characteristics of the fiber m at is reduced so that its resistance to compression is reduced and the thickness can be reduced more in the pre-compression while the temperature i s not so high to initiate a curing process.

    METODO PARA LA PRODUCCION CONTINUA DE TABLAS DE MATERIAL DE FIBRA LIGNOCELULOSICA.

    公开(公告)号:AR003012A1

    公开(公告)日:1998-05-27

    申请号:AR10371096

    申请日:1996-07-24

    Abstract: Un método para la producción contínua de tablas de material de fibra lignocelulósica caracterizado porque el material se deshace en partículas y/ofibras que se secan,encolan,y forman una estera que se prensa hasta formar una tabla terminada de modo que se introduce vapor. De acuerdo con la presenteinvención, el vapor se introduce en cantidad limitada en un primer paso de inyección. Esta cantidad se regula de forma que el vapor sólo penetra, calientay cura la capa superficial de la estera. Así, se obtiene una tabla que tenga una capa superficial con una mayor densidad que la capa central de forma que lasiguiente compresión de calibración provee un mayor espesor que permite que la capa central se expanda a la vez que se mantiene la densidad de las capassuperficiales.

    A method for producing lignocellulosic boards

    公开(公告)号:AU6539496A

    公开(公告)日:1997-02-26

    申请号:AU6539496

    申请日:1996-07-25

    Abstract: PCT No. PCT/SE96/00974 Sec. 371 Date Jan. 26, 1998 Sec. 102(e) Date Jan. 26, 1998 PCT Filed Jul. 25, 1996 PCT Pub. No. WO97/04932 PCT Pub. Date Feb. 13, 1997Methods for the continuous production of compressed board from lignocellulosic fibrous material are disclosed. The methods include providing the lignocellulosic fibrous material in the form of particles or fibers, drying, gluing and forming the lignocellulosic fibrous material into the form of a mat, and compressing the mat in the presence of steam in a single step which includes applying a compression roller to the mat and applying steam through the compression roller.

    A METHOD OF PRODUCING LIGNOCELLULOSIC BOARDS

    公开(公告)号:MY132237A

    公开(公告)日:2007-09-28

    申请号:MYPI9603004

    申请日:1996-07-22

    Abstract: A METHOD OF THE PRODUCTION OF BOARDS OF A LIGNOCELLULOSIC FIBROUS MATERIAL WHEREIN A MATERIAL IS BROKEN UP INTO PARTICLES AND/OR FIBERS THAT ARE DRIED, GLUED AND FORMED TO A MAT AND PRESSED TO A FINISHED BOARD SO THAT STEAM IS INTRODUCED TO BE MAT. ACCORDING TO THE PRESENT INVENTION, THE STEAM IS INTRODUCED IN A LIMITED AMOUNT IN A FIRST INJECTION STEP. THIS AMOUNT IS ADJUSTED SO THAT THE STEAM ONLY PENETRATES INTO, HEATS AND CURES THE SURFACE LAYER OF THE MAT. THUS, A BOARD HAVING A SURFACE LAYER WITH A HIGHER DENSITY THAN A MIDDLE LAYER IS OBTAINED SO THAT THE SUBSEQUENT CALIBRATION COMPRESSION PROVIDES A GREATER THICKNESS THAT PERMITS THE MIDDLE LAYER TO EXPAND WHILE THE DENSITY OF THE SURFACE LAYERS IS MAINTAINED.

    A METHOD FOR PRODUCING LIGNOCELLULOSIC BOARDS

    公开(公告)号:CA2226385C

    公开(公告)日:2006-12-12

    申请号:CA2226385

    申请日:1996-07-25

    Abstract: 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.

    A METHOD OF CONTINUOUS PRODUCTION OF LIGNOCELLULOSIC BOARDS

    公开(公告)号:MY132236A

    公开(公告)日:2007-09-28

    申请号:MYPI9603003

    申请日:1996-07-22

    Abstract: 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 TOA 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° CELCIUS. 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.

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