Abstract: An automated system for casting hollow fiber membranes into a variety of prescribed shapes, including spiral, linear, circular and rectangular. The system also has the capability to change the configuration during casting, which increases productivity. A co-extrusion die is rotated over a stationary coagulation bath A computer is used to control the motion of the die to make a membrane with the desired shape The nozzle is oriented in a manner that will compensate for distortions that occur in wall thickness in the area of a bend. In addition, the nozzle's annulus is offset to make the leading portion of the annulus slightly thicker and the trailing portion thinner at the point where the fluids exit the nozzle, which results in a uniformly symmetric wall thickness. A system embodying the invention includes X, Y and .theta.-directional servomotors 1A-1C (FIG. 1), each of which is coupled to an associated position encoder 2A-2C.

Abstract: A process and apparatus for an electrostatic spray coating operation wherein liquid overspray in the spray coating operation is collected and drained onto a workpiece support. The overspray is then removed from the workpiece support by a squeegee blade wherein the collected overspray is drained into a sump. From the sump, the spray, and optionally with makeup liquid, is recycled to the spray head.

Abstract: A method of producing printing plates having microdots in nonimaged areas is disclosed. The method includes placing a photocurable polymer composition with oxygen inhibitor characteristics on a backing sheet and spacing an image carrier with a microdot pattern from the polymer composition and applying actinic radiation. The image carrier may additionally contain the printing image.