全棉水刺非织造布超临界CO2流体静态膨胀漂白方法
The supercritical CO2 fluid static expansion bleaching method solves the problem of high water and electricity consumption during the debleaching process of cotton spunlace nonwoven fabrics, achieving efficient and environmentally friendly bleaching results, simplifying operation, and improving moisture absorption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN TEXTILE UNIV
- Filing Date
- 2023-10-25
- Publication Date
- 2026-07-17
AI Technical Summary
The current debleaching process for all-cotton spunlace nonwoven fabrics consumes a large amount of water and electricity and generates a large amount of wastewater.
A static expansion bleaching method using supercritical CO2 fluid is employed, which includes soaking, heat preservation and pressure holding, pressure release and cleaning steps. The method utilizes the physical and chemical properties of supercritical CO2 fluid for bleaching and cleaning, avoiding the use of large amounts of water resources and the generation of wastewater.
It achieves efficient bleaching of all-cotton spunlace nonwoven fabrics, reduces water and electricity consumption, improves bleaching effect and moisture absorption, simplifies the operation process, and eliminates wastewater discharge.