Patent ID: 6030201
Filing Date: 2000-02-29
Classification: A61F,B29C,B29L

Abstract:
A device for producing a thin-walled prophylactic, which comprises(a) an endless conveyor belt having a length,(b) an immersion tool mounted on the belt consisting of(i) a cylindrical section and(ii) a shaped section, having an annular groove and a reservoir part;the immersion tool being closed at one end and having on its surface a certain contour with a deepening starting about 50 mm from the closed end and extending across about 30 mm;(c) three immersion tubs, in which a latex mixture substantially consisting of natural rubber is present, the first of the three immersion tubs being deeper relative to the endless conveyor belt than the other two immersion tubs;(d) a first drying furnace arranged between the first and the second immersion tubs, a second drying furnace arranged between the second and the third immersion tubs, the furnaces being operated with a defined temperature profile and temperature program in which the maximum temperature amounts to about 70 degrees C.;(e) a third drying furnace, a brush device and a fourth drying furnace following the third immersion tub;(f) a fifth furnace extending across the length of the endless conveyor belt, said fifth furnace being operated with a defined temperature profile and temperature program, whereby the maximum temperature does not exceed about 110 degrees C.;(g) a rail extending along the first immersion tub, said rail providing the longitudinal axis of the immersion tool with a certain slanted position and putting the immersion tool into rotation; and(h) a stripping device having brushes rotating in opposite directions, and a pressurized water jet acting on a front part of the immersion tool.