Method of making a molded brush

Details Method of making a molded brush Method of making a molded brush

A - Human Necessities

46

D

300/10

A46D 3/00 (2006.01)

Patent

CA 1328295

Abstract of the Disclosure A brush adapted for selective application of a flowable fluid to a workpiece -- and which includes a hollow head section, a plurality of bristles depending from the head section, and a fluid distribution channel defined by a flexible membrane and extending substantially axially within the radial interior of the bristles from the head section of the brush toward the free ends of the bristles -- is formed in its entirety of a heat-fusible synthetic material. A tuft of synthetic material in filamentary form is inserted into a mold cavity and a heated die is moved into either direct contact with or closely proximate but predeterminately spaced apart relation with the mold for transferring sufficient heat to fuse the adjacent filament ends and form the brush head section. A heated pin is inserted into and retracted from the mold cavity through the brush head section to form the distribution channel membrane. In use, fluid fed to the brush head is delivered through the head section to the distribution channel and is discharged from the channel onto the bristles within the interior of the bristle tuft and proximate the bristle ends for facilitated distribution among the bristles and ready application to a workpiece by the user.

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