GLASS TUBE
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United States of America Patent
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Issued Date -
Aug 22, 2024
app pub date -
Apr 10, 2024
filing date -
May 6, 2020
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Abstract
A process for producing glass tubes includes: applying a glass melt onto an outer surface of a rotating conical mandrel by guiding the glass melt from a feed tank through an outlet; forming a hollow glass melt body on the conical mandrel; drawing the hollow glass melt body from the conical mandrel in a predetermined direction toward a front end for forming a glass tube, the outer surface having a wetting zone where the glass strand first contacts the conical mandrel, a spatial variation of the wetting zone of the applied glass melt being monitored by measuring a horizontal movement of an edge of the glass strand; reducing the spatial variation by adjusting one or more process parameters; cooling the hollow glass melt body; and cutting the cooled glass melt body into glass tubes.
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