| 摘要 |
The invention pertains to a process for producing surface-structured synthetic bristle material by extrusion of a monofilament. Before or during extrusion, granules are added to a first thermally melted synthetic material which constitutes the principal component of the monofilament. The granules consist of a second synthetic material with a higher thermal stability than the first. The grain size of the granules is such that the monofilament when subsequently stretched undergoes a more marked transverse contraction in cross-sections with few or no granules than in cross-sections which have granules. The invention also pertains to a surface-structured bristle made from the principal component first synthetic material in which granules of the second synthetic material are embedded so as to be more or less completely covered and form a structure at the bristle surface. The invention futher pertains to a brush, in particular a toothbrush or interdental cleaning device, with a plurality of bristles gathered as required into bundles, at least some of the bristles having the structure indicated above. |
