US 12,404,617 B2
Multi-section apparatus for dyeing, in an inert environment, of fabrics and yarns, with indigo and other reduction dyes
Francesco Ronchi, Sovico (IT)
Assigned to MASTER S.R.L., Macherio (IT)
Appl. No. 18/039,138
Filed by MASTER S.R.L., Macherio (IT)
PCT Filed Nov. 24, 2021, PCT No. PCT/IB2021/060919
§ 371(c)(1), (2) Date May 26, 2023,
PCT Pub. No. WO2022/118146, PCT Pub. Date Jun. 9, 2022.
Claims priority of application No. 102020000029285 (IT), filed on Dec. 1, 2020.
Prior Publication US 2023/0416984 A1, Dec. 28, 2023
Int. Cl. D06B 5/06 (2006.01); D06B 1/02 (2006.01); D06B 3/04 (2006.01); D06B 3/18 (2006.01); D06B 5/08 (2006.01); D06B 13/00 (2006.01); D06B 15/02 (2006.01); D06B 21/00 (2006.01); D06B 23/02 (2006.01); D06B 23/18 (2006.01); D06B 23/22 (2006.01); D06P 1/00 (2006.01); D06P 1/22 (2006.01); D06B 19/00 (2006.01); D06B 23/16 (2006.01)
CPC D06B 5/06 (2013.01) [D06B 1/02 (2013.01); D06B 3/04 (2013.01); D06B 3/18 (2013.01); D06B 5/08 (2013.01); D06B 13/00 (2013.01); D06B 15/02 (2013.01); D06B 21/00 (2013.01); D06B 23/023 (2013.01); D06B 23/18 (2013.01); D06B 23/22 (2013.01); D06P 1/0016 (2013.01); D06P 1/228 (2013.01); D06B 19/0005 (2013.01); D06B 19/0052 (2013.01); D06B 23/16 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An apparatus (10) for dyeing, with a dye bath (B), at least one continuous textile support (100) in the form of fabrics and/or yarns, the dyeing apparatus (10) comprising a parallelepiped-shaped single tank (12) within which said textile support (100) is moved, said tank (12) being internally provided, in sequence, with:
at least one first shaped cavity (14), which is obtained near a bottom wall (16) of said tank (12) and at a first head (22) of said tank (12), which is internally provided with at least one return roller (18) for said textile support (100) entering said tank (12) and is configured to be at least partially filled with a predefined quantity of dye bath (B) having a watertight function between a surrounding environment and said tank (12);
at least one first internal partition wall (20), which is positioned near said first head (22) of said tank (12), which is integral with side walls of said tank (12) and is configured to be immersed in a lower part in the dye bath (B) of said at least one first shaped cavity (14) for helping the watertight function;
one first dyeing compartment (24A) and at least one second dyeing compartment (24B, 24C) within which said textile support (100) is not immersed in said dye bath (B), wherein each dyeing compartment (24A, 24B, 24C) comprises:
at least one return roller (26A, 26B, 26C), arranged to guide the movement of said textile support (100) vertically or horizontally within the respective dyeing compartment (24A, 24B, 24C),
at least one dispensing device (28A, 28B, 28C), arranged to dispense the dye bath (B) on said textile support (100), and
at least one squeezing device (30A, 30B, 30C) with opposite idle rollers, placed at an exit of the respective dyeing compartment (24A, 24B, 24C) and configured to dehydrate at least partially said textile support (100) leaving the respective dyeing compartment (24A, 24B, 24C) and before entering the subsequent dyeing compartment (24A, 24B, 24C) or before leaving said tank (12);
at least one second shaped cavity (32), which is obtained near the bottom wall (16) of said tank (12) and at a second head (34) of said tank (12) opposite to said first head (22), which is internally provided with at least one return roller (36) for said textile support (100) leaving said tank (12) and which is configured to be at least partially filled with a predefined quantity of dye bath (B) having the watertight function between said tank (12) and the surrounding environment; and
at least one second internal partition wall (38), which is positioned near said second head (34) of said tank (12), which is integral with the side walls of said tank (12) and is configured to be immersed in the lower part in the dye bath (B) of said at least one second shaped cavity (32) for helping the watertight function;
the dyeing apparatus (10) further comprising:
at least one lid (40A, 40B, 40C), which engages in a watertight manner with said internal partition walls (20, 38) and said side walls to close said tank (12) at a top and insulate said dyeing compartments (24A, 24B, 24C) from the surrounding environment in a watertight manner;
at least one squeezing and pulling device (42) with opposite motorized rollers, which is placed downstream of said tank (12) and is configured to simultaneously pull said textile support (100) and extract excess liquids from said textile support (100) once it has left said tank (12); and
one hydraulic system (46), provided with at least one container (48), which is arranged to store, circulate and feed the dye bath (B) to said at least one dispensing device (28A, 28B, 28C) and inside said shaped cavities (14, 32), the dyeing apparatus (10) including one or more devices (44) for blowing air, which does or does not have oxygen added to it, provided downstream from said at least one squeezing and pulling device (42) with opposite motorised rollers, said one or more devices (44) for blowing air being designed to increase a level of oxidation of said textile support (100) once it has exited from said tank (12), in that at least one of said shaped cavities (14, 32) is provided with a respective ultrasound generator (56) which is designed to increase a bathing effect of said dye bath (B) contained in said shaped cavities (14, 32), and in that said container (48) is provided with at least one heating and cooling unit of said dye bath (B), such as to increase further a colour performance of said dye bath (B) contained in said container (48).