Abstract: In a method for the manufacture of brushware with plastic bristles, the bristles are extruded continuously as monofilaments, cut to the desired length and fixed to a bristle carrier as a bristle facing either individually or combined into groups. According to the invention, the monofilament after extrusion or the bristles produced therefrom are provided with at least one substantially linear boundary detectable on the bristle facing of the finished brushware as a color-contrasted marking at a distance from the use-side end of the bristles representing the use state. In brushware produced according to this method, at least part of the outer bristles in the bristle facing have a color-contrasted, substantially linear boundary at a distance from the use-side ends of the bristle representing the use state.

Abstract: A cleaning brush, particularly toothbrush, has a handle and an elongated brush head, which comprises a flexible bristle carrier tapering in longitudinal cross-section from the handle to the front end of the brush head and bristles fixed thereto. The bristle carrier is formed from two longitudinally, successively arranged portions interconnected in transitionless manner and made from materials having differing characteristics and at least the front portion is made from an elastomer. The materials, cross-sections and bending length of the portions are so chosen that the front portion is deflectable with a smaller radius of curvature than the other portion.

Abstract: In a plastic toothbrush in which the substantially rigid brush head is connected by means of a spring part to the substantially rigid handle and the spring part is embedded in the plastic, a construction advantageous from the manufacturing, use and environmental standpoints is obtained in that the spring part is made at least preponderantly from plastic with a higher modulus of elasticity than the plastic surrounding it.

Abstract: A toothbrush having a brush head made from plastic and vertical individual bristles made from plastic embedded into the brush head which are disposed at small separations with respect to each other, is distinguished in that, on the bristle head portion having bristles, approximately 400 to 800 individual bristles per cm2 are disposed and the overall height of the toothbrush comprising the free length of the individual bristles and the thickness of the brush head assumes a value between 6.5 and 11 mm.

Abstract: Brushes with a bristle carrier and a bristle facing of individual, vertical plastic bristles are manufactured in that the individual bristles with their fastening-side ends at the front are introduced into in each case one hole of a hole template, whose hole diameter is slightly larger than that of a single bristle and whose hole pattern corresponds to the positioning of the bristles within the bristle facing or part thereof, to such an extent that their fastening-side ends project roughly to the same extent at the opposite side of the hole template, the bristles are subsequently fixed against axial and radial displacement in the hole template, at least on the fastening-side surface of the bristle carrier is prepared a bed of liquid, curable material, the liquid material flows round the bristles with their fastening-side ends immersed in the bed and subsequently the bed is cured.

Abstract: The brushware comprises a bristle carrier and bristles fixed thereto, which are either arranged singly or in bundles and whose hardness is adjustable. A particularly simple, space-saving and hygienically satisfactory setting of the bristle hardness is obtained in that the bristles are elastically mounted on the bristle carrier and in the case of force action are deflectable at least tranversely to their axis and that the deflection angle of the bristles is adjustable.

Abstract: A toothbrush has a brush head and plastic bristles, optionally combined into bundles, fixed thereto and whereof at least some bristles have a profile on their circumferential surface. In order in the case of unchanged strength characteristics of the bristles to obtain an increased cleaning and massaging action, the bristles have a helix as the profile. The bristles can comprise a core and at least one helix running over the circumferential surface. For the manufacture of the toothbrush it is possible to extrude and then twist a profiled monofilament or a monofilament with axially parallel ribs and then fix the twist. It is also possible to co-extrude a monofilament made from one plastic with ribs made from a plastic having other characteristics running over its circumferential surface, followed by the twisting of the co-extruded composite and the fixing of the twist.

Abstract: In order to ensure a good cleaning of the interdental spaces, an interdental cleaner comprises an elongated, rod-like carrier of a first plastics material, which is covered in partial areas of its surface by at least one insert or support made from a second plastics material, which is softer than the first plastics material. The insert can be placed in a recess formed in the carrier and positively held therein. If the first plastics material of the carrier and/or the second plastics material of the insert or support contains one or more additives, the cleaning and care action can be varied and optimized. For the production of an interdental cleaner, the second plastics material of the insert or support is injection moulded onto the first plastics material of the carrier, the carrier and the insert or support being manufacturable in a two-component injection moulding process.

Abstract: In the case of a dental care device e.g. a toothbrush, having a handle, a head and a care part insertable in locking manner in a depression thereof, said care part can be ejected by means of a resilient pressure piece located on the back of the head and which acts when pressure is exerted on the back of the care part. In order to provide a sealed termination on the back and an e.g. handling, the head has on the back an opening closed by the pressure piece and in which engages the care part and said pressure piece is constructed as a resilient plastic disk and is sealingly fixed with its circumferential edge on the wall of the opening.

Abstract: A toothbrush comprises a handle, a head constructed as an at least one-sided open casing, a brush part insertable in its open side and having a support and a bristle facing, as well as locking means in the form of interengaging projections and recesses within the casing and on the support for fixing the brush part, the casing having a cheek supporting the support over its entire circumferential surface and on the head are provided means for the toolless pressing out of the brush part. In order to separate the functions "sealing" and "locking", on its inside the casing cheek and on its periphery the support are constructed as completely smooth-walled sealing surfaces and, outside the sealing surfaces, the locking means have inwardly displaced, resilient detents.

Abstract: A toothbrush in accordance with the invention includes a plastic brush body having a head, a neck and a handle, as well as bristle bundles fixed to the head, the free ends of the bristles of at least part of the bundles are located on an approximately conical envelope surface with a cone angle .alpha. of 30 to 90.degree. and the neck of the brush body in the case of an application force K between 500 to 1200 grams acting on the bristles resiliently to give way with the cone angle .alpha. and the application force K being approximately inversely proportional.

Abstract: In a method for the manufacture of brushware, particularly brushes, in a thermoplastic material bristle carrier are formed several blind holes, into each of which is inserted a thermoplastic material bristle coverage in the form of a single bristle or a bristle bundle, preferably accompanied by a close fit and until it rests on the bottom of the blind hole. The bristle carrier and bristle coverage are then welded together in the contact portion thereof, in that laser beams are transmitted through the bristle carrier or bristle coverage and directly applied to the contact portion and absorbed there, accompanied by the formation of heat.

Abstract: A method and an apparatus for the manufacture of brushes, and brushes manufactured according to such method. A bristle carrier of a elastic material is provided with at least one substantially cylindrically elongated recess. An elongated bristle bundle is inserted into the elongated recess. The bristle bundle has a thickened portion at its insertion end with a transverse cross-section larger than the narrowest transverse cross-section of the recess. The longitudinal axis of the bristle bundle is aligned with the longitudinal axis of the recess, and a force is applied longitudinally on the thickened portion to cause a wall of the recess to elastically spring out so as to permit passage of the thickened portion. After passage of the thickened portion, the wall springs back until engagement of the wall on the bristle bundle occurs to secure the bristle bundle in the recess.

Abstract: The invention relates to a method for the manufacture of screwlike bristles by extruding monofilaments. In order to provide a method with which screwlike bristles can be inexpensively manufactured in the same way as conventional bristles with an identical, predeterminable quality, a monofilament having a non-circular cross-section is extruded and is prestretched after drawing off, accompanied by a reduction in its cross-section, followed by further stretching, twisting to a screwlike bristle material over at least part of its length and then stabilization by shrinkage. It is possible to extrude a monofilament with an oval or polygonal cross-section or having a core and at least one axially parallel rib. According to a further method, at least two monofilaments are prestretched on drawing off, accompanied by a reduction of their cross-section, followed by further stretching, twisting together to give a screwlike bristle material and stabilization by heat shrinkage.

Abstract: Brushes, e.g. a brush, particularly a hygienic brush, or a paintbrush, which is exposed to moisture during use and which has a bristle carrier, preferably made from plastic, and a bristle facing. The entire bristle facing is formed from individual, closely standing, non-contacting bristles.

Abstract: A brush with a one-piece plastic brush body produced by injection moulding comprises a head covered with bristles and a dimensionally stable handle with a larger cross-section than the head, the brush body being made from an elastomer mixed with a foaming agent and the plastic is foamed in an area of the handle and is solid in the area of the head. The brush is produced by injection moulding in a two-part mould. An elastomer and a foaming agent are mixed during moulding. The mould cross-section for forming the head is smaller than the mould cross section for forming the handle with the elastomer being only foamed in the area of the handle.

Abstract: The invention is an apparatus for the detachable fastening of cleaning implements, such as brooms, scrubbing brushes or the like to a stick or handle. The stick is provided at its end with two fork-shaped, resilient arms, which can be fixed in bores of the cleaning implement with the aid of a fixing device. The fixing device comprises a handle, an operating element located between the arms and contact faces which engage the arms and spread the arms outwardly or draw the arms inwardly by rotation or displacement. The contact faces of the operating element are constructed on rotary bearing parts, preferably bearing rollers or rolls, which roll on the arms during the adjusting movement of the operating element.