Reducing dye liquid volume for dyeing beams - using dummy cylinder closely surrounding beam

摘要

A dummy cylinder surrounds a wound perforate beam in a dyeing appts. The cylinder has an opening at the top so that dye liquid flows through the beam, fills the dummy cylinder and then overflows into the surrounding vessel to the outlet. The amount of dye liquid used per batch is reduced, with consequent savings on costs of dye liquid, processing plants and power. A vent ensures uniform pressure within the dyeing appts. cavities. The interior of the beam is filled with a second dummy cylinder with a conical end to assist dye liquid flow.