Embossing roller and method for the manufacturing thereof
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United States of America Patent
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Mar 10, 2015
Grant Date -
May 7, 2009
app pub date -
Mar 12, 2007
filing date -
Mar 15, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method for obtaining an incision in an embossing roller using a hob to provide protuberances that are rounded on top and which improve the quality of the embossed material and reduce the wear of the mechanical components of the embossing units. The shape of the protuberances is obtained by machining the cylindrical surface of the roller placed between the tailstocks of the lathe using a hob that has teeth, the profile thereof being complementary to the cross-section of the protuberances. A portion of the hob with the teeth generates the grooves that define the side faces of the protuberances. The grooves between the teeth of the hob have a profile that is curvilinear in a cross-sectional view. With a double pass at two different inclinations of the surface of the roller, the protuberances of FIGS. 5 and 6 are generated.
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