Method to attach brush bristle tufts onto carriers made of thermoplastic material
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United States of America Patent
Stats
-
Jun 18, 2002
Grant Date -
Sep 27, 2001
app pub date -
Dec 22, 2000
filing date -
Dec 22, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In order to attach brush bristle tufts onto carriers made of thermoplastic material, which are formed with multiple holes according to a desired tuft pattern, the bristle tufts are first inserted into the holes in such a way that the bristle tips that are to be used protrude from one side while the bristle ends protrude only slightly from the holes on the opposite side. A heated punch has a multiplicity of conical or pyramidal projections. The projections of this punch penetrate between the holes into the mass of the carrier so that this mass softens and is pushed laterally into the interstices of the bristle tufts. In this manner, a tight interlock is created between the material of the bristles and that of the carrier.
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