Tufted style brushes are herein disclosed which overcome many of the disadvantages associated with the use of stapleset brushes. The brushes of the instant invention include a plate of rigid or semi-rigid material, such as sheet metal or reinforced synthetic material, having a plurality of holes pierced therethrough, said plate being relatively smooth on the obverse side, and having flanged or raised areas circumferentially surrounding each hole on the reverse side. Tufts are secured in the holes of the plate by means of a ring which presses against the flanged area to create a positive locking effect. Finally, the structure can be provided with a securely fastened backing element.
The invention is directed to a toothbrush having a brush section 20 comprising a bristle carrier 22 and bristles 24 fixedly secured thereto, with the brush section 20 being provided with components made of silver. Separate structures 28 are provided for fixedly securing the bristles 24 in their proper location in the bristle carrier 22, which separate structures 28 are made of a material with oligodynamic action.
A process for manufacturing a brush having an integral bristle retention feature. One end of each bristle tuft to be inserted into a molded brush body is fused into a ball-shaped mass. The body is molded around the mass, thereby anchoring the tufts in the body.
The mechanical roughening of the surface of a printing plate substrate comprising aluminum or an aluminum alloy is carried out by wet brushing with the use of a cylinder brush 1 in which brush rows 2, 3 having bundles of organic fibers 22 and metal wires 33 are arranged side by side on the surface 7. The suspension used for the wet brushing contains from 5 to 80% by weight of abrasive particles in water.
An applicator for applying a product to hair may include a support not including a twisted wire and at least one through hole extending through the support. The at least one through hole may have a non-constant cross-section. The applicator may also include a tuft of bristles held in the at least one through hole. The tuft of bristles may be configured to apply the product to hair.
An improved method for fastening thermoplastic bristle tufts to a thermoplastic bristle carrier. The bristle carrier includes premolded holes with outwardly extending generally concentric collars to receive the bristle tufts. The bristles in each of the tufts to be secured to the carrier have their fastening ends melted and fused together to form a thickened fastening end portion. The thickened fastening end portion of each tuft has a cross-section which is no greater than the corresponding cross-section of the premolded hole and outwardly extending collar on the carrier. The premolded collars and the adjacent side wall portions of the premolded holes in the carrier are softened by non-contact heating means, the thickened fastening end portions of the bristle tufts are inserted into the premolded holes and their associated collars substantially without interference therebetween, and the softened collars are swaged about the thickened fastening end portions of the bristle tufts, thereby securing the bristle tufts to the carrier when the swaged collars cool and harden. Because the collars comprise only a small amount of thermoplastic material, heating and cooling requirements to effect joinder are minimized, thereby reducing the overall cycle time for the present process. In addition, the small amount of localized heating in the collars avoids unsightly damage to or distortion of the carrier.
