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Patent Searching and Data


Title:
WATERLESS DYEING METHOD AND SYSTEM FOR VISCOSE FIBER
Document Type and Number:
WIPO Patent Application WO/2022/088236
Kind Code:
A1
Abstract:
The present invention relates to the technical field of fiber dyeing, and in particular to an environmentally friendly waterless dyeing method and a fitting dyeing system, especially a waterless dyeing method and system for a viscose fiber. The method comprises the steps of: 1-1, loading a viscose fiber; 1-2, dyeing the viscose fiber; 1-3, performing primary dyeing and over dyeing; 1-4, adjusting the pressure and dyeing; 1-5, repeating the primary dyeing and over dyeing step to realize enhanced over dyeing to obtain a final solid dyeing viscose fiber; and 1-6, controlling the waterless dyeing system for the viscose fiber to unload the solid dyeing viscose fiber. According to the present invention, during waterless dyeing, a carbon dioxide fluid in a supercritical state cooperates with the dye for dyeing, which can effectively ensure that the dye is fully immersed into the fiber during dyeing, and improve the dyeing effect.

Inventors:
GAO CHAO (CN)
GAO WEI (CN)
WANG MEIYU (CN)
Application Number:
PCT/CN2020/127610
Publication Date:
May 05, 2022
Filing Date:
November 09, 2020
Export Citation:
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Assignee:
SHANDONG GAOMIAN INTELLIGENT FIBER DYEING TECH CO LTD (CN)
International Classes:
D06P1/94; D06P3/02; D06P3/60
Foreign References:
CN109355929A2019-02-19
CN110512377A2019-11-29
CN109137342A2019-01-04
CN102776738A2012-11-14
JP2005273098A2005-10-06
Attorney, Agent or Firm:
SHENZHEN YUANSHENGZHIHE INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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