公开(公告)号：US4474830A

公开(公告)日：1984-10-02

申请号：US454159

申请日：1982-12-29

申请人： Carl R. Taylor

发明人： Carl R. Taylor

IPC分类号： C03C25/10 ,  B29C47/06 ,  C03C25/12 ,  C03C25/18 ,  G02B6/44 ,  B05D7/20 ,  B05D3/06 ,  G02B5/14 ,  G02B5/16

CPC分类号： C03C25/18 ,  B29C47/0014 ,  B29C47/128 ,  B29K2105/20 ,  B29L2031/3462

摘要： Fibers are coated with two (or more) layers. A first coating liquid is applied by an applicator having a die that provides for the formation of a gap between the die and the first coated layer. A second die is located at the exit of the first die, with the second coating liquid flowing onto the fiber through a relatively narrow clearance between the first and second dies. The clearance is formed by die surfaces perpendicular to the fiber axis. This second die also provides for a gap, so that the second layer is applied at a "free surface" at the point of contact with the first coated layer. This approach eliminates turbulence and coating nonuniformities associated with prior art multiple coating techniques.

摘要翻译： 纤维涂有两层（或更多层）。 通过具有模具的涂布器施加第一涂布液，所述模具提供在模头和第一涂层之间形成间隙。 第二模具位于第一模具的出口处，其中第二涂覆液体通过第一和第二模具之间相对较窄的间隙流动到纤维上。 间隙由垂直于纤维轴的模具表面形成。 该第二模具还提供间隙，使得第二层在与第一涂层的接触点处以“自由表面”施加。 该方法消除了与现有技术的多重涂覆技术相关的湍流和涂层不均匀性。

公开(公告)号：US4409263A

公开(公告)日：1983-10-11

申请号：US343134

申请日：1982-01-27

申请人： Charles J. Aloisio, Jr. ,  Terrence A. Lenahan ,  James V. Smith, Jr. ,  Carl R. Taylor

发明人： Charles J. Aloisio, Jr. ,  Terrence A. Lenahan ,  James V. Smith, Jr. ,  Carl R. Taylor

IPC分类号： B05C3/15 ,  B05D1/18 ,  B05D7/20 ,  C03C25/10 ,  C03C25/18 ,  G02B6/44 ,  G02B5/14 ,  B05C3/12 ,  G02B1/10

CPC分类号： B05C3/15 ,  C03C25/18

摘要： A coating material is applied to drawn lightguide fiber in a manner which substantially prevents the inclusion of bubbles and which causes the fiber to be disposed substantially concentrically within the coating layer. The lightguide fiber is advanced through a continuum of coating material, which extends from a free surface of a reservoir and through first and second dies that are arranged in tandem, at a velocity which causes air to be entrained in the coating material. A pressure gradient is established between portions of the first die adjacent to its exit orifice. The first die communicates with the reservoir and is spaced from the second die to provide a chamber which communicates with a pressurized supply of the coating material. The pressurized flow sufficiently enhances the pressure gradient in the first die and establishes sufficient volumetric flow of coating material upwardly through the first die to cause any bubbles in the coating material on the advancing fiber to be removed by recirculating streamlines and to be moved upwardly into the reservoir. Not only is the coating in the fiber substantially free of entrained air as it leaves the second die, but the fiber is disposed concentrically within the coating because of a precentering effect of the first die and enhanced self-centering caused by pressure in the chamber.

摘要翻译： 涂覆材料以基本上防止气泡包含的方式施加到拉制的光导纤维，并且使得纤维基本上同心地设置在涂层内。 光导纤维通过连续的涂层材料前进，涂层材料从储存器的自由表面延伸并且以以导致空气夹带在涂层材料中的速度串联布置的第一和第二模具延伸。 在与其出口孔相邻的第一模具的部分之间建立压力梯度。 第一模具与储存器连通并且与第二模具间隔开以提供与加压的涂料材料连通的室。 加压流动充分增强了第一模具中的压力梯度，并且通过第一模具向上建立足够的涂层材料体积流动，以使得前进纤维上的涂料中的任何气泡通过再循环流线被去除并向上移动到 水库 不仅纤维中的涂层在离开第二模具时基本上不含夹带的空气，而是由于第一模具的预中心效应和由腔室中的压力引起的增强的自定心，纤维同心地设置在涂层内。