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公开(公告)号：US6136239A
公开(公告)日：2000-10-24
申请号：US666442
申请日：1996-06-26
摘要： Continuous methods for manufacturing finished board are disclosed which include disintegrating lignocellulose material prior to drying, gluing, and forming into mats, and in which the pressing of the mat into a board includes a first step in which the mat is pressed in the presence of steam in a heating medium to produce a partially pressed board having a substantially uniform density, and a second compressing step in which the outer layers of the partially pressed board are increased in density as compared to the center of the board.
摘要翻译： PCT No.PCT / SE95 / 00043 Sec。 371日期1996年6月26日第 102（e）日期1996年6月26日PCT提交1995年1月19日PCT公布。 WO95 / 20473 PCT出版物 日期1995年8月3日公开了制造成品板的连续方法，其包括在干燥，胶合和成型为垫之前分解木素纤维素材料，并且将垫压入板中的步骤包括第一步骤，其中垫被按压 在加热介质中存在蒸汽以产生具有基本均匀密度的部分压制板，以及第二压缩步骤，其中部分压制板的外层的密度与板的中心相比增加。
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公开(公告)号：US4688301A
公开(公告)日：1987-08-25
申请号：US860130
申请日：1986-05-06
IPC分类号： A24C5/18 , A24C5/34 , B27N20060101 , B27N3/04 , B27N3/14 , D01G25/00 , D04H1/72 , D21F20060101 , D21F1/00 , D21F1/08 , D21H27/42
摘要： A method and apparatus for forming a web having a predetermined grammage profile in its transverse direction is provided. The method includes the steps of introducing a flow of particulate material into the distribution chamber of a forming head through an oscillating nozzle and depositing the material on an air permeable belt to form a web while changes in the upper surface of the web are detected downstream of the distribution chamber, signals are generated in response to any change which are compared with predetermined set points, and an output control signal is generated as a result of the comparison. The pattern of movement of the nozzle is controlled in response to the output control signal to provide the predetermined grammage profile for the web. In addition, the speed of the web may be measured and used to control the frequency of the nozzle so that a web having uniform grammage in the longitudinal direction is also provided. An apparatus for accomplishing each of the steps of the method is additionally provided.
摘要翻译： 提供了一种用于在其横向上形成具有预定克重曲线的幅材的方法和装置。 该方法包括以下步骤：通过振荡喷嘴将颗粒材料流引入成形头的分配室中，并将材料沉积在透气带上以形成纸幅，同时在纸幅的上表面上的变化被检测到 响应于与预定设定点进行比较的任何变化产生分配室，信号，并且作为比较的结果生成输出控制信号。 响应于输出控制信号控制喷嘴的运动模式，以提供纸幅的预定克重曲线。 此外，可以测量纤维网的速度并用于控制喷嘴的频率，从而也提供了在纵向具有均匀克重的幅材。 另外提供了用于完成该方法的每个步骤的装置。
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