Method of and apparatus for forming sheets of fibrous material between
converging sieves
    3.
    发明授权
    Method of and apparatus for forming sheets of fibrous material between converging sieves 失效
    在收敛筛之间形成纤维材料片的方法和装置

    公开(公告)号:US4048008A

    公开(公告)日:1977-09-13

    申请号:US658079

    申请日:1976-02-13

    CPC分类号: D21F9/003 D21F11/04 D21F9/006

    摘要: A technique for forming single or multi-layer sheets of fibrous material having a controllable fiber distribution is described. A pair of spraying rollers each having a system of circumferentially spaced radial vanes on its surface are supported within the upper portion of a working zone defined between a pair of continually advancing, downwardly converging sieves that are disposed symmetrical to a longitudinal axis. The rollers are rotated in respectively opposite directions to intercept at least one fibrous suspension downwardly directed into the working zone, and to thereafter propel the intercepted liquid outwardly and downwardly toward the sides of the working zone in symmetrical fashion. The fibrous layers thus built up on the advancing sieves converge into the final sheet in the lower portion of the working zone. Separate facilities are associated with the upper and lower portions of the working zone for drawing liquid from the formed layers outwardly through the sieves.

    摘要翻译: 描述了一种用于形成具有可控纤维分布的单层或多层纤维材料片的技术。 一对喷涂辊各自具有在其表面上具有周向间隔开的径向叶片的系统,其被支撑在工作区域的上部内,该工作区域被限定在与纵向轴线对称设置的一对连续前进的向下收敛的筛子之间。 辊分别沿相反的方向旋转以拦截至少一个向下引导到工作区域中的纤维悬浮液,然后以对称的方式将被截留的液体向着和向下朝向工作区的侧面推进。 由此构建在前进筛上的纤维层在工作区的下部会聚到最终的片材中。 单独的设施与工作区的上部和下部相关联,用于将液体从成形层向外抽出通过筛子。