Jet pattern dyeing of material, particularly carpet

摘要

High performance apparatus for pattern dyeing of textile material by means of a plurality of controlled liquid dye streams. The textile material is conveyed in web form beneath one or more applicators each including a plurality of closely spaced nozzle tubes extending across the textile web. A dye source supplies dye under pressure through flexible tube portions to the nozzle tubes, the flexible tube portions permitting pinching for selective control of dye flow. For rapid and precise control of liquid dye streams, pinch tube valve assemblies are provided for each flexible tube portion for which control of dye flow is desired. A superior and effective pinch tube valve assembly is of the type generally including a valve block portion with a bore in the valve block portion receiving the corresponding dye delivery tube flexible portion. A passageway in the valve block portion communicates with and is disposed generally transversely to the bore, and a tube pinch off member is selectively reciprocal within the passageway into the bore for forcing the corresponding dye delivery tube closed. An actuator is provided for selectively urging the tube pinch off member against the corresponding dye delivery tube. A suitable controller causes selective actuation of the pinch tube valve assemblies as the textile material moves relative to the dye delivery tube outlet ends to effect dyeing of the textile material in a desired pattern. A variety of nozzle tube arrangements may be employed for various control and pattern effects.