Method for dyeing a nonwoven fabric and apparel formed therefrom
US7537621B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 27, 2005 |
| Grant date | May 26, 2009 |
| Priority date | — |
| Expiry date | Jan 24, 2027 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P3/8228
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method is provided for dyeing a nonwoven fabric comprising a blend of fibers to a single color shade. The method includes selecting a nonwoven fabric formed of a blend of polyester and nylon fibers, where the polyester fibers comprise about X percent by weight of the fabric and the nylon fibers comprise about Y percent by weight of the fabric. A single bath is formulated having about X percent by weight disperse dye and about Y percent by weight acid dye, adjusted for the desired color shade/depth. The nonwoven fabric is then dyed to obtain a dyed fabric having a single color shade of at least Grade 4 when measured in accordance with AATCC Test Method 153 and a colorfastness of at least Grade 4 when measured in accordance with AATCC Test Method 61.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.