Method for producing a toothbrush and toothbrush
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United States of America Patent
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Sep 23, 2014
Grant Date -
Nov 15, 2012
app pub date -
Dec 20, 2010
filing date -
Jan 26, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
In the production of toothbrushes, the neck part and the head part are bent relative to each other from the original shape thereof by a predetermined angle (α) in the hot state of the toothbrush body. Thereafter, the force applied to the toothbrush body by the stretching device in order to bend the toothbrush body is removed so that the toothbrush body can bend back into the original shape thereof. The risk of fractures, in particular brittle fractures, can be greatly reduced by said action. The method is advantageous, in particular, if the toothbrush body was heated during processing by ultrasonic welding.
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