Abstract: Bristles for applying media are produced in that a filament, which can be cut into bristles, is extruded with a core which also determines the mechanical properties of the bristle. Cavities are formed at a separation from the center of the core and open towards the circumference of the filament which can be filled with medium from the outside, wherein the circumferential openings of the cavities are formed such that the medium is discharged only when the bristle is appropriately used. The cavities may also have a larger opening width and be covered by a layer or jacket. A bristle and brushes having such bristles produced in accordance with this method are also described.

Abstract: A thermoplastic monofilament for bristles which are exposed to excessive moisture during use, consists of a polymer mixture of at least one polyamide (PA) and at least one thermoplastic polyester (PE) whose mixing ratio is selected according to the technical, functional properties decisive for the use of the bristle as well as in dependence on the ambient conditions at the location of use decisive for the function of the bristle.

Abstract: During processing of bristles, at least some bristles of a bristle stock are split, along at least part of their length, into several separate partial cross-sections or fingers under the action of mechanical forces. For simplified manufacture of bristles with defined fingers independent of their relative disposition, the mechanical forces are applied from different directions with respect to the longitudinal axis of the bristles preferably using a blunt, blade-free tool, e.g. a striking tool.

Abstract: Bristles for applying media are produced in that a filament, which can be cut into bristles, is extruded with a core which also determines the mechanical properties of the bristle. Cavities are formed at a separation from the center of the core and open towards the circumference of the filament which can be filled with medium from the outside, wherein the circumferential openings of the cavities are formed such that the medium is discharged only when the bristle is appropriately used. The cavities may also have a larger opening width and be covered by a layer or jacket. A bristle and brushes having such bristles produced in accordance with this method are also described.

Abstract: In a method for producing a monofilament with reduced secondary binding forces of at least two commonly extruded polymers for the production of bristles or interdental cleaners which are slittable substantially axially through the action of mechanical forces, the at least two polymers of the monofilament are disposed in a regular geometrical arrangement with substantially axially extending boundary layers in which the reduced secondary binding forces prevail for generation of defined slits of flags.

Abstract: A bristle comprises a core of a comparatively rigid, bending-elastic plastics material and at least one layer of a rubber-like plastics material, which is profiled by stamping or embossing against the core. To said layer can be applied a further film-like coating smoothing the profiling. Such a bristle is produced by the co-extrusion of the core and the rubber-like layer and the subsequent stamping thereof against the core. The film-like coating is applied following stamping.

Abstract: A method is described for producing a monofilament with reduced secondary binding forces of at least two commonly extruded polymers for the production of bristles or interdental cleaners which are slittable substantially axially through the action of mechanical forces, wherein for generation of defined slits of flags, the at least two polymers of the monofilament are disposed in a regular geometrical arrangement with substantially axially extending boundary layers in which the reduced secondary binding forces prevail.

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.

Abstract: For the manufacture of bristle material for brushes with different types of plastic bristles, which are produced as continuous monofilaments by extrusion, different types of continuous monofilaments are combined in the composition desired for the finished brushes into a mixed strand and wound up and subsequently from the mixed strand is cut the bristle material required for the brushes.

Abstract: Plastic bristles made of a thermoplastic or thermosetting plastic material are proposed, into which reinforcing fibers in the form of at least one endless fiber bundle are embedded to increase the bending strength, abrasion resistance, and breaking strength. The fibers preferably are composed of glass fibers, aramid fibers, carbon fibers, or high-strength polyethylene fibers. The plastic material of the bristles can be extruded together with the reinforcing fibers, but it is also possible to manufacture the plastic bristles in a pultrusion bed.

Abstract: In a process for producing bristle tuft material or separate bristles of plastic or synthetic resin for making sweeping brushes, brooms or housepainters' and artists' brushes, endless monofilaments are extruded and then directly wound on a bobbin or guided together in the form of tow, such tow then being twisted and cross wound onto a bobbin without end flanges so that, for a given diameter or size of bobbin, the material is less sharply bent, and will be less permanently curled when taken off the bobbin. Furthermore it is possible for a much greater length of endless monofilament material to be put in a single package so that less of the weight of such a package is made up by the weight of the bobbin. From the point of view of production engineering, there is the useful effect that the monofilaments or the twisted tow may be run off parallel to the axis of the cross wound package and the drawing off part of the brush making machine made of simpler design.