Brushes and the manufacture thereof

Details Brushes and the manufacture thereof Brushes and the manufacture thereof

1983-12-20

1986-06-03

Feldman, Peter

Brush, broom, and mop making

Processes

15159A, 15191R, 15167R, 219121LF, A46D 100, A46B 904

Patent

active

045925941

ABSTRACT:
The invention relates to a brush provided with bristles made of an organic thermoplastic synthetic material such as nylon, particularly a tooth-brush.
The free ends of the bristles which are sharp and therefore able to damage soft surfaces are made round by a heat treatment. The bristle ends are preferably submitted to a laser beam treatment, the source of laser beams being preferably placed below the bristle ends. Particularly, the brush and the heat source are submitted to a relative movement and the heat treatment takes place in an atmosphere of an inert gas.
The invention relates also to a brush, preferably a tooth brush, having a head carrying a plurality of monofilaments made of an organic thermoplastic synthetic material. The monofilaments are tangentially welded to each other in a hole provided in said head, so that a plurality of capillary channels is obtained, said channels being open, on the one hand, on the side where the filaments protrude from the brush head and, on the other hand, on the side of the brush head opposite to the side carrying the protruding monofilaments. Impurities may thus be removed through the open-ended capillary channels, when the brush is cleaned.

REFERENCES:
patent: 2244615 (1941-06-01), Garcin
patent: 2426328 (1947-08-01), Wandel et al.
patent: 2554777 (1951-05-01), Dangin
patent: 2587792 (1952-03-01), Von Sivers
patent: 2672640 (1954-03-01), Peterson et al.
patent: 2876477 (1959-03-01), Stewart
patent: 3711908 (1973-01-01), Broers
patent: 4256948 (1981-03-01), Wolf et al.

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