Method of making a molded brush

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

1989-02-22

1990-03-13

Rosenbaum, Mark

Brush, broom, and mop making

Processes

A46D 300

Patent

active

049078410

ABSTRACT:
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 closely proximate but predeterminately spaced apart relation with the mold for transferring to the mold sufficient heat to fuse the adjacent filament ends and form the brush head section. A heated pin is then inserted into and retracted from the mold cavity through the brush head section to form the distribution channel membrane.

REFERENCES:
patent: 4795218 (1989-01-01), Seidler

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