Multi-step process for dyeing textile materials with a concentrated dye system

A technology of textiles and dyes, which is applied in the direction of dyeing, textiles and papermaking, and textile material processing, which can solve the problems of low fastness, high cost, inconvenient measurement and control technology, etc., and achieve the increase and decrease of friction fastness The effect of textile waste

Inactive Publication Date: 2011-08-10
DYSTAR COLOURS DEUTSCHLAND GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Furthermore, the low fastness levels achieved by existing methods of dyeing denim with indigo are a nuisance for both industry and consumers, especially in relation to dry and wet rubbing fastness
[0007] Finally, the mentioned methods are technically demanding in that multiple interactively interacting parameters have to be captured and monitored at great cost and are inconvenient in terms of the required measurement and control technology

Method used

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  • Multi-step process for dyeing textile materials with a concentrated dye system

Examples

Experimental program
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Effect test

Embodiment Construction

[0069] Dyeing of Warp Yarn Sheets from Reduced Indigo Aerosol Media

[0070] Dyeing is done on a machine according to figure 1 is done on the device and is controlled as follows:

[0071]Before starting the dyeing, the aerosol chamber 5 is filled with nitrogen to remove the air (i.e. oxygen) present there. This is done by means of multiple dual material nozzles on the spray arm 6 . Simultaneously, a pre-circulation of dyeing liquid from a collecting container via the liquid feed line to the spray arm 6 and back to the collecting container via the liquid return line is initiated. During this pre-running phase, the desired amount of dye liquor added is set via flow meters and associated control valves. To maintain a constant inlet pressure at the dye liquor feed line, pressure transducers and control valves are used to set and maintain the desired line pressure throughout the dyeing stage. Once the presetting phase has ended, the squeeze roll 4 is closed and the process is s...

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PUM

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Abstract

The present invention relates to a process for dyeing sheetlike textile materials with a concentrated dye, which comprises a concentrated dye system being applied in a total amount of 1% to 25% by weight, based on the textile material, to the textile material in two or more sub-steps and the dye being fixed on the textile material after each and every sub-step.

Description

(1) Technical field [0001] The invention relates to the technical field of dyeing of textile materials. (2) Background technology [0002] A large part of the impact caused by the textile industry is attributable to today's dyeing and finishing processes, which consume large amounts of water and textile auxiliaries. All further optimizations of existing methods that can be hoped for appear to be, at best, marginal improvements relative to the minimization of environmental impact. [0003] The dyeing of denim items with indigo is of particular interest in this context, since this field usually employs large-scale industrial dyeing series, which have a large volume and therefore also a high water demand and wastewater impact. [0004] The prior art involves a continuous exhaust dyeing process to piece together pieces of (warp) threads (as required in weaving) or ropes (combining 300 to 400 pieces of warp in one rope) Yarn) individual threads are dyed. In this continuous exh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/00D06P1/22D06P1/30D06P1/96D06P3/00D06P3/60D06B19/00
CPCD06P1/30D06P1/228D06P3/6025D06P1/0016D06B3/04D06B5/06D06P3/003D06B1/02D06P1/002D06P1/965D06P1/0044D06P1/0096D06B19/0094Y10S8/917Y10S8/918
Inventor C·梅耶W·施罗特F·苏特施
Owner DYSTAR COLOURS DEUTSCHLAND GMBH
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