Method and apparatus for dry forming a layer of fibers
    6.
    发明授权
    Method and apparatus for dry forming a layer of fibers 失效
    干法形成纤维层的方法和装置

    公开(公告)号:US4074393A

    公开(公告)日:1978-02-21

    申请号:US640219

    申请日:1975-12-12

    CPC分类号: D21H27/00

    摘要: In dry forming a layer of fibers, the fibers are conveyed by carrier air to a distributor housing having a perforated bottom wall through which the fibers pass downwards on to a foraminous forming surface connected on its underside to a suction box. The invention ensures that the fibers pass from the distributor to the forming surface under the influence of suction and gravity alone so as to provide a layer of more uniform depth than hitherto obtained by dry forming.

    摘要翻译: 在干燥形成纤维层时,纤维通过载体空气传送到具有穿孔底壁的分配器壳体,纤维通过该穿孔底壁向下通向其下侧连接到吸入箱的多孔成形表面。 本发明确保纤维在吸力和重力的影响下从分配器通过成形表面,从而提供比迄今为止通过干式成形获得的更均匀的深度的层。

    Apparatus for making fibrous sheet material
    7.
    发明授权
    Apparatus for making fibrous sheet material 失效
    用于制造纤维片材的装置

    公开(公告)号:US3976412A

    公开(公告)日:1976-08-24

    申请号:US584256

    申请日:1975-06-06

    CPC分类号: D04H1/732 D04H1/00 D04H1/736

    摘要: Apparatus for dry forming one or more fibrous layers on a forming surface to provide eventually fiberboard or paper in which the fibers are fed by carrier air to a distributor immediately above the forming surface. The rate of flow of the carrier air and its fiber concentration are adjusted to match the distributor requirements by removal of some of the carrier air in a cyclone separator upstream of the distributor. Any removed fibers are fed back into the remaining carrier air.

    摘要翻译: 用于在成形表面上干燥形成一个或多个纤维层的装置,以最终提供纤维板或纸,其中纤维通过载体空气供给到紧邻成形表面上方的分布器。 通过去除分配器上游的旋风分离器中的一些载气,调节载气的流动速率及其纤维浓度以匹配分配器的要求。 任何去除的纤维被反馈回剩余的载体空气中。

    Flowbox with convergent wall portions
    8.
    发明授权
    Flowbox with convergent wall portions 失效
    具有会聚壁部分的流动箱

    公开(公告)号:US4083750A

    公开(公告)日:1978-04-11

    申请号:US682594

    申请日:1976-05-03

    IPC分类号: D21F1/00 D21F1/02

    CPC分类号: D21F1/028 D21F1/02

    摘要: For a paper, board or similar fibrous web making machine, a flowbox comprising an enclosed explosion chamber having upstream and downstream walls converging from a top wall toward a bottom wall, the stock inlet being directed at the downstream wall adjacent the region of convergence. A stock outlet is provided by non-divergent upper and lower plates defining an exit slice, the lower plate being a continuation of the bottom wall and the lower plate being shorter than the upper plate.

    摘要翻译: 对于纸张,纸板或类似的纤维幅材生产机器,流动箱包括封闭的爆炸室,其具有从顶壁朝向底壁会聚的上游和下游壁,所述原料入口指向与所述会聚区域相邻的下游壁。 库存出口由限定出口切片的非发散的上板和下板提供,下板是底壁的延续部,下板比上板短。