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公开(公告)号：EP0843615A1
公开(公告)日：1998-05-27
申请号：EP96925238.0
申请日：1996-07-25
IPC分类号： B27N3
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.
摘要翻译： 一种连续生产木质纤维素纤维材料板的方法，其中材料被破碎成颗粒和/或纤维。 这些被干燥，胶合并形成垫子。 在引入蒸汽时，垫子被压缩成完成的板子。 根据本发明，压缩作为单个步骤执行，并且蒸汽通过一个或多个压缩辊引入。 通过以这种方式注入蒸汽，获得足够的固化以承受纤维固有的回弹特性，从而可以通过单个压缩步骤获得板的最终厚度。
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公开(公告)号：EP0842022A1
公开(公告)日：1998-05-20
申请号：EP96925239.0
申请日：1996-07-25
IPC分类号： B27N3
摘要： 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 the 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.
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公开(公告)号：EP0842021A1
公开(公告)日：1998-05-20
申请号：EP96925237.0
申请日：1996-07-25
IPC分类号： B27N3
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.
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