Apparatus and process for continuous dyeing of fiber
US5917118A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1997 |
| Grant date | Jun 29, 1999 |
| Priority date | — |
| Expiry date | Dec 19, 2017 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06B21/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An apparatus and method for the dyeing raw cotton fibers in a continuous wet process includes cleaning raw cotton fibers, aligning and forming a cotton batt, and then providing the cotton batt to a continuous wet process dye system. The continuous wet process system includes a dye applicator, a steamer, a first rinser, an oxidizing applicator, a second rinser, and a finish rinser. The batt is conveyed at ambient temperature and pressure along a series of conveyor belts through the system, first being immersed in the dye solution in the dye applicator. The dye solution is an aqueous solution of dye, alkali, penetrant, and a solubilizer. After a short immersion in the dye solution, the batt is conveyed to a set of squeeze rollers which squeeze excess dye solution from the cotton. The cotton is then moved through a steamer to fix the dye, through a first rinser, and then through a second set of squeeze rollers to remove water. The oxidation process which occurs in the oxidizing applicator further fixes the dye. The batt is then moved through a third set of squeeze rollers to remove remaining oxidizing chemicals and conveyed to the second rinser where it is subjected to a heated soap s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.