Patent ID: 7313935
Filing Date: 2008-01-01
Classification: D06B

Abstract:
1. Dying or bleaching apparatus for yarn wound on reels or similar packages, with a reduced soaking ratio, comprising a plurality of small treatment boilers ( 15 ) closed on a base ( 48 ) and equipped with removable closing covers ( 11 ), said small boilers ( 15 ) being equipped with entry and/or exit tubes ( 70 , 70 ′) for a treatment liquid connected to a circulation pump ( 16 ) and to a heat exchanger ( 17 ), in each of said small boilers ( 15 ) being arranged a removable support shaft ( 13 ) in a central position, upon which reels of yarn or similar packages ( 12 ) are slotted one on top of the other, characterized in that said small boilers ( 15 ) have circular sections, have a vertical axis, and the axes of said small boilers ( 15 ) are arranged on a single circumference, each of said support shafts ( 13 ) is in a vertical position, and is arranged between housings ( 29 , 25 ′) formed near to each cover ( 11 ) and to each base ( 48 ), respectively, in which the diameter of the small boilers ( 15 ) is larger than the maximum diameter of each of said reels or similar packages ( 12 ), said covers ( 11 ) are fixed to a covering annular structure ( 50 ), moved by an opening or closing device ( 51 , 20 , 21 , 43 ) of all the small boilers ( 15 ), said entry and/or exit tubes ( 70 , 70 ′) being intercepted by at least two valves ( 55 , 55 ′), said valves ( 55 , 55 ′) when in operation exclude one or more of the small boilers ( 15 ) from the dyeing process, while maintaining a constant soaking ratio.