Fabric fluid impregnation system - has a slitted tube through which fluid is applied under pressure to moving material

摘要

Fabrics are impregnated with a fluid, such as dyeing or other finishing fluids, using a hollow tube with a slit for the fluid to be sprayed through under pressure as the fabric is passed over the slit. The system allows fluids to be applied to fabrics at temps. above the boiling point of the fluids. The tube, of 50-100 mm.dia., is filled with the treatment fluid through a valve feed, and held under pressure. The fabric to be treated is passed over the surface of the tube for the fluid to be applied in a spray through the slit. The fabric is passed over the slit in an obtuse angle, at a suitable speed according to the absorbtion characteristic of the matl. The system can be extended by having a no. of tubes arranged on one or both sides of the fabric, or by having the tube replaced by a broad-surfaced hollow support with an application slit.