Method and device for producing bristle products and bristle products
Brush ware comprising at least one carrier and bristles made from a moldable plastic material disposed thereon, is produced by providing the carrier with through holes acting like spinning nozzles, to which bristle-shaped molding channels join and a plastic melt for the bristles is injected from at least one side of the carrier—the feed side of the melt—through the holes into the channels thereby forming the bristles, wherein the through holes have a minimal width along at least a portion of their length which is ≦3 mm and the ratio between this width and the flow path of the melt resulting from the depth of the through holes plus the length of the channels is ≦1:5. A device for carrying out the method and brush ware produced in accordance with the method is also described.
1. A brush ware comprising:
a carrier having a plurality of through holes from which bristles extend;
wherein at least one of the through holes has a minimal width of ≦3 mm along at least a portion of its depth;
wherein each of said bristles are formed from a thermoplastic material and have a maximum width transverse to a longitudinal axis thereof of ≦3 mm;
wherein a ratio R between said transverse width and a bristle length is ≦1:5,
wherein said at least one of said through holes has an insertion funnel, a cylindrical hollow guiding path and a transition zone, all of which communicate with a plurality of cylindrical hollow smoothing paths extending down through said through hole, the number of smoothing paths corresponding to a number of bristles of a bundle of said bristles each of which extend out and down from said through hole and a respective smoothing path,
wherein the longitudinal length of each of the plurality of smoothing paths is parallel to the axis of the through hole, and wherein, the upper diameter of the guiding path, the transition zone, and each of the plurality of smoothing paths progressively decrease relative to that of the insertion funnel, and
wherein, the upper diameter of the guiding path, the transition zone and each of the plurality of smoothing paths progressively decrease relative to that of the insertion funnel.
2. The brush ware of claim 1 , wherein 1:250≦R≦1:10.
3. The brush ware of claim 1 , wherein a cross-section of said bristles is less than or substantially equal to a cross section of said through holes.
4. The brush ware of claim 1 , wherein at least some of said bristles are hollow.
5. The brush ware of claim 1 , wherein free ends of said hollow bristles are open.
6. The brush ware of claim 1 , wherein free ends of said hollow bristles are closed.
7. The brush ware of claim 1 , wherein said hollow bristles surround and are filled by core bristles.
8. The brush ware of claim 1 , wherein said hollow bristles surround and are filled by core bristles made from another plastic material.
9. The brush ware of claim 1 , wherein said hollow bristles have perforations and surround said core bristles, wherein said core bristles pass through said hollow bristle perforations to form protrusions on an outside of said bristles.
10. The brush ware of claim 1 , wherein at least some of said bristles have finger-like extensions.
11. The brush ware of claim 1 , wherein at least some of said bristles comprises a plastic material filled with at least one of particles and fibers.
12. The brush ware of claim 1 , wherein at least part of said bristles have structures which extend substantially parallel to a bristle axis to reduce secondary binding forces transverse to a molecular orientation of said bristles.
13. The brush ware of claim 12 , wherein said bristles can be detached along said structures into finger members.
14. The brush ware of claim 1 , wherein at least part of said bristles are made from an energy-conducting plastic material.
15. The brush ware of claim 14 , wherein at least a core region of said bristles is made from a transparent, light-guiding plastic material.
16. The brush ware of claim 1 , wherein said carrier has at least one depression and at least one through hole begins at each of said at least one depression, wherein said at least one depression is filled with a plastic material of said bristles.
17. The brush ware of claim 1 , wherein at least one of said carrier and said bristles are made from different plastic materials.
18. The brush ware of claim 1 , wherein at least a portion of said carrier has several layers.
19. The brush ware of claim 1 , wherein said carrier is at least partially made from a flexible rubber-elastic plastic material.
20. The brush ware of claim 1 , wherein said bristles are made from a plastic having antibacterial properties.
21. The brush ware of claim 1 , wherein said carrier has antibacterial properties.