This invention relates to a process and apparatus for dyeing of textiles, to an immobilized enzyme comprised in said apparatus required for carrying out the process, and to a method to produce enzymatically indigo and derivatives thereof.

The invention relates to a multi-pipe quantitative medium filling system of a supercritical fluid waterless dyeing machine. The system comprises a supercritical fluid medium reservoir, a stop valve, and a medium filter sequentially connected by a high-pressure main pipe, and at least two filling branches independent of each other and connected to the medium filter. Each filling branch includes a booster pump, a supercritical fluid high-pressure mass flowmeter, a ball valve, and a dyeing unit sequentially connected along a medium forward direction by a high-pressure branch pipe. By using a mass-measurement filling system having multiple branches independent of each other, the invention can effectively realize simultaneous and accurate quantitative medium filling for separate dyeing units and differentiated filling for dyeing units with different medium masses, thus overcoming disadvantages such as unreliability, inaccuracy and low use efficiency of a conventional method, and also making a dyeing operation simple and scientifically feasible.

The invention discloses a mobile dyeing cup for supercritical fluid waterless dyeing and finishing. The dyeing cup achieves separate or simultaneous filling of the medium into multiple dyeing units, and simultaneous heating of the dyeing units for proofing processing. A medium outlet is provided at the lowest position of the bottom of the cup, and the inner surface of the dyeing cup is coated with polytetrafluoroethylene, to effectively reduce residual dye chemicals in the cup and improve the cleaning efficiency. The perforated baffle at the bottom of the cup effectively prevents a textile product from blocking the medium outlet during medium filling and outputting, so that the processing medium and residual dye chemicals can be smoothly discharged. Accordingly, defects of an existing fixed proofing device such as low utilization efficiency, complex cleaning and incapability of meeting the proofing requirements of commercial production are overcome.

Provided herein is a method of separating spandex from textile blends using biosolvents. The recovered material is of high purity while the chemical structure and molecular weight remain substantially unaffected by the treatment.

This invention relates to a process and apparatus for dyeing of textiles, to an immobilized enzyme comprised in said apparatus required for carrying out the process, and to a method to produce enzymatically indigo and derivatives thereof.

A method and an integrated system for dyeing synthetic, natural, and blended textiles in the form of fabrics, yarns, and garments are provided. The integrated system includes a first pressurizing pump for pressurizing liquefied CO.sub.2 to supercritical CO.sub.2 (ScCO.sub.2); a second pressurizing pump for pressurizing CO.sub.2 to liquefied CO.sub.2; a liquefied CO.sub.2 storage vessel for storing the liquefied CO.sub.2 and the separated liquefied CO.sub.2 from the one or more cyclone separators; a heater for heating the ScCO.sub.2; a dyestuff vessel for mixing a dyestuff and the ScCO.sub.2 to obtain ScCO.sub.2-mixed dyestuff; a dyeing vessel for dyeing the textile by circulating the ScCO.sub.2 and the ScCO.sub.2-mixed dyestuff between the dyeing vessel and the dyestuff vessel; and one or more cyclone separators for removing the dyestuff from the ScCO.sub.2-mixed dyestuff to obtain separated liquefied CO.sub.2.

A garment manufacturing system and methods, providing lower water consumption, energy consumption, and chemical consumption, that can include a washing machine, positioning a spray nozzle within the washing machine, and coupling a high pressure pump to the spray nozzle, the spray nozzle being configured to atomize within the washing machine which can include a catalyst, a humectant, and water.

A method and an integrated system for dyeing synthetic, natural, and blended textiles in the form of fabrics, yarns, and garments are provided. The integrated system includes a first pressurizing pump for pressurizing liquefied CO.sub.2 to supercritical CO.sub.2 (Sc-CO.sub.2); a second pressurizing pump for pressurizing CO.sub.2 to liquefied CO.sub.2; a liquefied CO.sub.2 storage vessel for storing the liquefied CO.sub.2 and the separated liquefied CO.sub.2 from the one or more cyclone separators; a heater for heating the Sc-CO.sub.2; a dyestuff vessel for mixing a dyestuff and the Sc-CO.sub.2 to obtain Sc-CO.sub.2-mixed dyestuff; a dyeing vessel for dyeing the textile by circulating the Sc-CO.sub.2 and the Sc-CO.sub.2-mixed dyestuff between the dyeing vessel and the dyestuff vessel; and one or more cyclone separators for removing the dyestuff from the Sc-CO.sub.2-mixed dyestuff to obtain separated liquefied CO.sub.2.

A waterless yarn dyeing system includes a piece of yarn separation equipment and a piece of dyeing equipment. The yarn separation equipment is adapted for separating a plurality of yarns. The dyeing equipment is adapted for outputting an ink to the yarns, and includes an ink supply device, an inkjet device, and at least two pump units. The ink supply device includes two ink containers that are adapted for holding the ink, at least two ink supply tubes that are respectively connected to the ink containers, and an ink tank that is connected to the at least two ink supply tubes. The at least two pump units are respectively disposed on the at least two ink supply tubes. Each of the at least two pump units includes an input pump and an output pump that are operable to adjust a flow rate of the ink, and a temporary storage box.