Moulding filter sheets

摘要

A layer 30 is shaped into the position shown in FIG. 1 and is attached to a plastic or steel plate 22 to fit the plate snugly. Pressure is applied to move the plate 20 and the plate 28 relative to each other towards each other to cause the water to be squeezed from a wet concrete mix 10 and to cause water to flow along the fabric sheet 26 and out through the fabric sheets 18 and 26.