Continuous foam dyeing apparatus and method

Details Continuous foam dyeing apparatus and method Continuous foam dyeing apparatus and method

D - Textiles, Paper

06

P

D06P 5/20 (2006.01) D06B 11/00 (2006.01) D06B 19/00 (2006.01)

Patent

CA 2129752

2129752 9413875 PCTABS00032 An apparatus and method are provided for generating a foam from a preheated dye solution and subsequently applying the foam to continuous strands of yarn wherein the foam is driven by a pressure differential. The apparatus (10) has a foaming pan (96) for producing the foam from the dye solution and a gas. The pan opens into a foam transmission chamber (100, 102) at or near ambient pressure which fluid communicates with an evacuated spent foam discharge chamber (104, 106) across an open interface. The yarn (16) is dyed by conveying it through the open interface and contacting it with the foam which is drawn across the open interface in a flow path perpendicular to the yarn by the pressure differential between the foam transmission (100, 102) and discharge chambers (104, 106).

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