METHOD AND MACHINE FOR PRODUCING A HOLLOW PRODUCT
A method and injection machine for producing a hollow product, such as a urisheath, use of the method for producing a urisheath as well as the urisheath. The machine comprises an annular cavity for receiving a silicone material. The material is injected in a cold state via a coldrun nozzle and cured by heat in the cavity. The cavity has a narrow cross-sectional area over a substantial portion of the cavity and the cavity is connected to a venting area. The cavity has an annular enlarged portion at the proximal portion of the cavity, arranged adjacent said inlet and a groove at the distal portion of the cavity. The narrow cross-sectional area has a decreasing radial dimension towards the distal portion of the cavity. The surface of the cavity is grit blasted.
1 . An injection molded urisheath comprising a cylindrical portion having first and second ends, a tip portion disposed at the first end, and a push rim disposed to protrude radially outwardly from the tip portion.
2 . The urisheath according to claim 1 , having an outer roll rib disposed at about the second end of the cylindrical portion.
3 . The urisheath according to claim 2 , wherein the cylindrical portion has a reduced thickness as the second end is approached.
4 . The urisheath according to claim 3 , wherein the surface of the urisheath is roughened.
5 . The urisheath according to claim 2 , wherein the surface of the urisheath is roughened.
6 . The urisheath according to claim 1 , wherein the surface of the urisheath is roughened.
7 . An injection molded urisheath comprising a cylindrical portion having first and second ends, a tip portion disposed at the first end, and an outer roll rib disposed at about the second end of the cylindrical portion.
8 . The urisheath according to claim 7 , wherein the cylindrical portion has a reduced thickness as the second end is approached.
9 . An injection molded urisheath comprising a cylindrical portion having first and second ends, a tip portion disposed at the first end, and the cylindrical portion has a roughened surface.