Process for rounding the bristle tips of toothbrushes and toothbrushes prepared by this process
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United States of America Patent
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Aug 9, 1988
Grant Date -
N/A
app pub date -
Sep 5, 1986
filing date -
Sep 20, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The present invention relates to a method for rounding the bristle tips of toothbrushes by the action of laser radiation, characterized in that the rounding process is effected in an electrostatic field, thus avoiding the fusion of the individual bristles as well as the formation of a mushroom-like bristle tip.
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