A textile dyeing device includes a dyeing table and a dyeing vat. The dyeing vat is arranged inside the dyeing table. A movable cavity is defined in the dyeing table. A motor is installed in the movable cavity. The motor is fixedly connected with a first gear. The bottom wall of the movable cavity is rotatably connected with a second gear. The second gear is engaged with the first gear. A sidewall of the second gear away from the bottom wall of the movable cavity is fixedly connected with a first rotating rod. One end of the first rotating rod away from the second gear passes through and seals a bottom wall of the dyeing vat. A rotating block is arranged on the one end of the first rotating rod passing through the dyeing vat. Fan blades are fixedly connected with a sidewall of the rotating block.

A textile dyeing device includes a dyeing table and a dyeing vat. The dyeing vat is arranged inside the dyeing table. A movable cavity is defined in the dyeing table. A motor is installed in the movable cavity. The motor is fixedly connected with a first gear. The bottom wall of the movable cavity is rotatably connected with a second gear. The second gear is engaged with the first gear. A sidewall of the second gear away from the bottom wall of the movable cavity is fixedly connected with a first rotating rod. One end of the first rotating rod away from the second gear passes through and seals a bottom wall of the dyeing vat. A rotating block is arranged on the one end of the first rotating rod passing through the dyeing vat. Fan blades are fixedly connected with a sidewall of the rotating block.

The present invention relates to a process for the production of a dyed biopolymer comprising the steps of providing at least one biopolymer-producing microorganism, providing at least one dye-producing microorganism, culturing said at least one biopolymer-producing microorganism to produce at least a biopolymer, and culturing said dye-producing microorganism wherein said dye-producing microorganism produce at least a dye suitable to dye at least part of said biopolymer, whereby a dyed biopolymer is obtained. The present invention also relates to a dyed biopolymer, to process for the production of a dyed composite article comprising at least the dyed biopolymer and to articles comprising the dyed biopolymer.

A dyeing and welding process may be configured to convert a substrate into a welded substrate having at least some color imparted thereto via a dye and/or coloring agent by applying a process solvent having a dye and/or coloring agent therein to the substrate, wherein the process solvent interrupts one or more intermolecular force between one or more component in the substrate. The substrate may be configured as a natural fiber, such as cellulose, hemicelluloses, and silk. The process solvent may include a binder, such as dissolved biopolymer (e.g., cellulose). After application of a process solvent comprised of a dye and/or coloring agent, the substrate may be exposed to a second application of a process solvent comprised of a binder, which second application may occur before or after a process temperature/pressure zone, process solvent recovery zone, and/or drying zone.

A dyeing and welding process may be configured to convert a substrate into a welded substrate having at least some color imparted thereto via a dye and/or coloring agent by applying a process solvent having a dye and/or coloring agent therein to the substrate, wherein the process solvent interrupts one or more intermolecular force between one or more component in the substrate. The substrate may be configured as a natural fiber, such as cellulose, hemicelluloses, and silk. The process solvent may include a binder, such as dissolved biopolymer (e.g., cellulose). After application of a process solvent comprised of a dye and/or coloring agent, the substrate may be exposed to a second application of a process solvent comprised of a binder, which second application may occur before or after a process temperature/pressure zone, process solvent recovery zone, and/or drying zone.

Provided are novel compounds of indigo-derivatives as irreversible color changeable dyes. Also provided are methods for the use of various indigo-derivatives for irreversibly color changeable dyes for textile materials and to novel compounds. Also provided is a process for dyeing textile materials, especially denim, with indigo-irreversible color changeable dyes and for textiles and garment articles made by the dyeing process for textile materials.

Provided are novel compounds of indigo-derivatives as irreversible color changeable dyes. Also provided are methods for the use of various indigo-derivatives for irreversibly color changeable dyes for textile materials and to novel compounds. Also provided is a process for dyeing textile materials, especially denim, with indigo-irreversible color changeable dyes and for textiles and garment articles made by the dyeing process for textile materials.

The present invention relates to the use of indigo derivatives for dyeing synthetic textiles to a process for dyeing synthetic textiles and to dyed textiles and articles containing them. The invention also relates to novel indigo derivatives per se and to a process for the preparation thereof.

A fabric has enhanced response characteristics for laser finishing. The fabric can be denim for denim apparel such as jeans. Software and lasers are used to finish apparel made of the fabric to produce a desired wear or distressing pattern or other design. The fabric allows for relatively fast color change in response to the laser, color changes in hue from indigo blue to white, many grayscale levels, and maintains strength and stretch properties. A method used to make the fabric includes spinning, dyeing, and weaving yarns in such a way to obtain the desired enhanced response characteristics for laser finishing.

The present disclosure provides methods for digital printing using modified indigo dye compounds.