| abstract |
The dyeing and welding process may consist of converting the substrate into a welded substrate having at least some of the color imparted thereto via a dye and / or a colorant by applying a process solvent having a dye and / or a colorant therein to the substrate , Wherein the process solvent destroys one or more intermolecular forces between one or more components of the substrate. The substrate can be composed of natural fibers such as cellulose, hemicellulose, and silk. The process solvent may comprise a binder, such as a dissolved biopolymer (e. G., Cellulose). After application of a process solvent consisting of a dye and / or a colorant, the substrate may be exposed to a secondary application of a process solvent consisting of a binder and the secondary application may be carried out in the process temperature / pressure zone, process solvent recovery zone, and / It can happen before or after. |