Injection-molding method for manufacturing locked tubular hollow body i.e. furniture damper housing, involves removing supporting core from inner core to form gap, and injecting liquid plastic into cavity until gap is filled with plastic

摘要

The method involves retracting a supporting core (24) into a cavity (22) of an injection molding tool until a centering contour (27) of the supporting core engages with a centering contour (26) of a cylinder inner core (23). Liquid plastic is injected into the cavity. The supporting core is removed from the inner core to form a gap. Additional liquid plastic is injected into the cavity until the gap is filled with plastic, where removal of the support core from the inner core is performed after a partial plasticization of the inner core. INDEPENDENT CLAIM is also included for a housing for a furniture damper.