Method of making a molded brush back

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

1975-10-23

1976-12-07

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

264243, 425245R, 425805, B29C 500, B29F 105

Patent

active

039963306

ABSTRACT:
A finished plastic-handled brush is prepared by a single molding step involving gateless molding of the brush back by a tunnel-gating and novel punch-pin finishing apparatus and process which eliminates the usual gate stud, and removing the finished brush back and securing tufts of bristles in the face of the brush back to complete the brush construction.

REFERENCES:
patent: 2651810 (1953-09-01), Snyder
patent: 2770011 (1956-11-01), Kelley
patent: 3371384 (1968-03-01), Nouel
patent: 3590114 (1971-06-01), Uhlig
patent: 3847525 (1974-11-01), Bielfeldt et al.

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