Method and machine for producing a hollow product
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United States of America Patent
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Sep 2, 2014
Grant Date -
May 7, 2009
app pub date -
Oct 3, 2006
filing date -
Oct 3, 2005
priority date (Note) -
In Force
status (Latency Note)
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Abstract
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 (20) 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 (13). The cavity has an annular enlarged portion (18) at the proximal portion of the cavity, arranged adjacent said inlet (24) and a groove (14) 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.
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