D - Textiles – Paper – 06 – B
Patent
D - Textiles, Paper
06
B
68/3
D06B 1/02 (2006.01) D06B 9/02 (2006.01) D06B 9/06 (2006.01)
Patent
CA 1091945
A CLOSED CYCLE APPARATUS FOR THE RAPID, CONTINUOUS AND WATERLESS DYEING OF TEXTILE AND PLASTIC MATERIALS Abstract of the Disclosure The present invention relates to a closed cycle apparatus for the rapid, continuous and waterless dyeing of a textile or plastic material with a dyestuff dissolved or suspended or dispersed in a high boiling solvent (such as glycol or glycol ether or other members of the alcohol family) for carrying out the dyeing step, after which the dyed textile or plastic material subsequent to cooling is washed with a low boiling liquid (such as methanol or ethanol) and then dried. The apparatus is constructed so as to operate under non-aqueous or substantially non-aqueous conditions with the complete or substantially complete recovery and recycling of the used dye- stuff, the used high boiling solvent and the used low boiling wash liquid. In this way, the apparatus can be operated at a relatively low cost and in a completely or substantially com- pletely closed cyclic system with essentially complete recovery and reuse of the treating fluids so as to greatly reduce the cost of operating the dyeing apparatus and also without any pollution of our natural water resources.
280411
Gowling Lafleur Henderson Llp
Martin Processing Inc.
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