Bristles with surface structure, method for their manufacture and interdental cleaner or brush manufactured therefrom
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United States of America Patent
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Dec 26, 2000
Grant Date -
N/A
app pub date -
Jun 11, 1998
filing date -
Sep 15, 1995
priority date (Note) -
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Abstract
A method for the manufacture of surface-structured bristle material from plastic by extruding a monofilament. Before or during extrusion a granular material is admixed with a thermally melted first plastics material forming the main component of the monofilament. The granular material comprises a second plastics material, which has a higher thermal strength than the first plastics material. The particle size of the granular material is such that the monofilament, during a subsequent stretching, is subject to a greater transverse contraction in cross-sections where there is little or no granular material than in cross-sections containing granular material. A disclosed bristle included a surface structure from a first plastics material forming the main component of the bristle and in which is embedded in a substantially completely covered manner a granular material of a second plastics material, the granular material forming a structuring on the bristle surface. A brush, particularly a toothbrush or interdental cleaner, with a plurality of bristles, optionally combined into bundles and in which at least certain bristles have the aforementioned structure, is also disclosed.
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