公开(公告)号：US5539958A

公开(公告)日：1996-07-30

申请号：US527721

申请日：1995-09-13

申请人： Serge Cadieux ,  Yvon L'Heureux ,  St ephane St-Cyr ,  Berthier Roy ,  Scott L. Gamble

发明人： Serge Cadieux ,  Yvon L'Heureux ,  St ephane St-Cyr ,  Berthier Roy ,  Scott L. Gamble

IPC分类号： D01G15/20 ,  D01G25/00 ,  B65G53/44 ,  D01G27/00

CPC分类号： D01G15/20 ,  D01G25/00

摘要： An aerodynamic forming hood is provided for supplying a substantially uniform distribution of fibers in a downward laminar airstream for the deposition of the fibers on one or more forming surfaces. The hood is formed by a rectangular housing having opposed elongated downwardly diverging side walls and short downwardly diverging end walls. The housing has a smaller rectangular open top end through which a supply of fibers is released in an airstream which enters into the housing. The forming surfaces are disposed at a larger bottom forming end of the housing. The side walls and end walls in the top part of the hood are provided with elongated horizontal apertures. Controllable suction boxes are connected to the apertures for the controlled evacuation of air and fibers through the slots to substantially eliminate the formation of air turbulence and hence boundary layer separation in the airstream inside the housing to obtain the said laminar airstream with a substantially uniform distribution of fibers therein.

摘要翻译： 提供了一种空气动力学形成罩，用于在向下的层流气流中提供基本上均匀的纤维分布，以将纤维沉积在一个或多个成形表面上。 罩由具有相对的细长的向下发散的侧壁和短的向下发散的端壁的矩形壳体形成。 壳体具有较小的矩形开放顶端，通过该较小的矩形开口顶端，在进入壳体的空气中释放纤维供应。 成形表面设置在壳体的较大底部形成端。 罩顶部的侧壁和端壁设有细长的水平孔。 可控抽吸箱连接到孔，用于通过狭槽控制抽空空气和纤维，以基本上消除空气湍流的形成，从而形成空气湍流，从而形成空气中的气流，从而获得所述层流气流， 纤维。