BRUSH (VERSIONS) AND BRUSH MANUFACTURE METHOD (VERSIONS) Russian patent published in 2002 - IPC

FIELD: brush production. SUBSTANCE: brush has whole plastic body manufactured by injection molding method. Brush body is composed of head with set of bristles and handle of constant shape. Handle section is greater than head section. Brush body is made from elastomer containing blowing agent. Brush handle part is subjected to foaming and head part having the least section is made continuous. Brush is manufactured by injection molding in injection mold composed of two parts. Head forming injection mold has smaller section than handle forming injection mold. Head forming injection mold section is selected so small, as compared to handle forming injection mold, that elastomer containing blowing agent is foamed only on handle part of brush body. EFFECT: simplified construction and convenient use. 22 cl, 5 dwg