Unlock instant, AI-driven research and patent intelligence for your innovation.

Washing off dyed textile material

A textile and dyeing machine technology, applied in the field of reactive dye dyeing, can solve problems such as unsatisfactory requirements, and achieve the effects of less water and energy, less time, ecology and economy

Inactive Publication Date: 2011-06-29
DYSTAR COLOURS DISTRIBUTION GMBH
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method therefore has considerable water, energy and time requirements and does not meet today's ecological and economical requirements

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Use a conventional jet dyeing machine with air propulsion to transfer a piece of 180g / m 2 The circular knit fabrics of C.I. were dyed with 1.5% C.I. Reactive Red 198 (based on the weight of the fabric) for 60 minutes at a bath ratio of 8:1 through an isothermal process.

[0033] After dyeing, drain the dyeing solution and refill the machine with clean water to a bath ratio of 8:1. After circulating for 10 minutes at 80°C, the bath liquid is discharged again until the residual moisture content of the fabric is about 250%-300%.

[0034] In the process of discharging the bath liquid, the fabric rope is further driven by pure air to circulate the air preheated to 70°C for 15 minutes, and is further removed at a wipe-off device in the process Excessive rinse liquid.

[0035] Then, water was injected again to a bath ratio of 8:1 and circulated at 80°C for 10 minutes.

[0036] After draining the rinsing liquid and drying, the obtained material is comparable in its fastness level to t...

Embodiment 2

[0038] Using a conventional jet dyeing machine with air propulsion, a piece of 140g / m 2 The textile fabric was dyed with 2% C.I. Reactive Yellow 145 (based on the weight of the fabric) for 60 minutes at a bath ratio of 8:1 through an isothermal process.

[0039] After dyeing, drain the dyeing solution and refill the machine with clean water to a bath ratio of 8:1. The bath was circulated at 80°C for 10 minutes and then discharged again.

[0040] The fabric is removed from the machine, dewatered by passing it through a padding machine, and sent to a suspended circulating steaming machine for heat treatment.

[0041] After staying at 80°C for 10 minutes, the fabric was additionally passed through two consecutive washing chambers filled with 80°C water.

[0042] The fabric is then squeezed dry, plaited down and dried. Its fastness level is comparable to that of fabrics washed continuously by conventional methods.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention relates to a process for washing off reactive-dyed textile material, which comprises a first rinsing step, followed by a dwelling step, followed in turn by a second rinsing step.

Description

(1) Technical field [0001] The invention relates to the technical field of dyeing with reactive dyes. (2) Background technology [0002] Reactive dyes are widely used to dye cellulosic fiber products, that is, especially cotton products. In addition to chromophores, they also contain reactive groups (called reactive anchors), which combine with the hydroxyl groups of cellulose during the dyeing process from an aqueous liquid under alkaline conditions to form a co- Valence bond. Therefore, it is possible to obtain dyed products with particularly excellent washing fastness. [0003] However, in the dyeing process, in addition to the desired reaction of the reactive groups with cellulose, there is also a reaction with water, which causes the dye to become a hydrolyzed state. The hydrolyzed dye is no longer able to react with the cellulose and remains on the fiber in an unattached form. [0004] After the dyeing step, the hydrolyzed dye must be removed as completely as possible, beca...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D06P3/66D06P5/02D06B3/28
CPCD06P3/66D06P5/02
Inventor A·施莱尔L·威尔伯斯
Owner DYSTAR COLOURS DISTRIBUTION GMBH