公开(公告)号：US5391071A

公开(公告)日：1995-02-21

申请号：US146263

申请日：1993-10-29

申请人： Roopnarine Hazarie ,  Edward S. Jones ,  Timothy R. Mahns ,  Vratislav M. Michal ,  Scott C. Ofslager

发明人： Roopnarine Hazarie ,  Edward S. Jones ,  Timothy R. Mahns ,  Vratislav M. Michal ,  Scott C. Ofslager

IPC分类号： B29C47/08 ,  B29C47/14 ,  B29C47/92

CPC分类号： B29C47/0877 ,  B29C47/0021 ,  B29C47/14

摘要： Apparatus is disclosed for producing thin polymeric film and includes a source (17) of a solution of polymer and solvent; a casting member (10) having an outer surface (12) for receiving a cast layer (18) of polymer and solvent, the layer having a transverse width; a casting die (16) for casting the layer of polymer and solvent onto the outer surface, the die including a transverse slot (20) with adjacent upstream and downstream lips (22, 24) between which the polymer and solvent flow during casting, the lips having lengths approximating the transverse width of the layer; and a device (11 ) for moving the outer surface past the casting die. Improved devices are provided for optically inspecting (26, 32) the lips to detect a presence of agglomerations of polymer on the lips; for directing a stream of solvent (28, 34) at the lip to wash away any detected agglomeration; for supporting (58, 116) the device for inspecting and the device for directing; and for traversing (44, 48, 52, 64; 90, 96, 106, 120) the device for supporting back and forth along the length of the lip to facilitate inspecting and washing of the lip.

摘要翻译： 公开了用于生产薄聚合物薄膜并包括聚合物和溶剂溶液的源（17）的装置; 具有用于接收聚合物和溶剂的流延层（18）的外表面（12）的铸造构件（10），所述层具有横向宽度; 一种用于将聚合物和溶剂层浇铸到外表面上的铸模（16），所述模具包括具有相邻上游和下游唇缘（22,24）的横向槽（20），在浇铸过程中聚合物和溶剂在其间流动， 嘴唇的长度近似于该层的横向宽度; 以及用于使外表面移动经过铸模的装置（11）。 提供改进的装置用于光学检查（26,32）唇缘以检测聚合物在嘴唇上的聚集的存在; 用于在嘴唇处引导溶剂流（28,34）以洗去任何检测到的附聚物; 用于支持（58,116）用于检查的装置和用于引导的装置; 并且用于横过（44,48,52,64; 90,96,106,120）用于沿唇缘的长度来回支撑的装置，以便于检查和洗涤唇缘。