Processing method of ultra-deep reactive dyeing of single-color fabric
Through liquid ammonia transformation of fiber structure and mercerated dry dyeing and color fixing process, combined with liquid ammonia finishing, the problems of low color volume and excessive dyeing additive emissions in textile printing and dyeing are solved, and the dual benefits of improving dyeing depth and environmental protection are achieved.
Patent Information
- Application Number
- CN202310175485.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-02-28
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2043-02-28
AI Technical Summary
In the existing textile printing and dyeing technology, continuous rolling and dyeing methods lead to low color yield, long production, and excessive emission of dyeing additives, which affects environmental protection.
The processing method of liquid ammonia → merceration → rolling and drying → continuous dyeing and solidifying → liquid ammonia finishing is adopted to improve the dyeing rate by transforming the fiber structure of liquid ammonia, and further improve the dyeing depth after liquid ammonia finishing.
It significantly improves the dyeing depth by more than 25%, the color fastness and stain resistance of water washing resistance reach 4-5, the color fastness of dry friction reaches 4-4 level, and the color fastness of wet friction reaches 3-4 level, and at the same time reduces dyeing additive emissions and water resource consumption, which is environmentally friendly and economical.