Multi-component foam injection head for filling hollow chambers

摘要

A foam injector(2) for filling hollow chambers with a multi-component foam has separate lines(14,16) for each component. Flow of each component into the common mixing chamber(4) is governed by a valve (10,12) in each line (14,16), valve opening and closing being controlled by hydraulic lines (24,26) according to the pressure or a change in pressure in the hydraulic lines and/or feed lines.