Fabric Dyeing Methods
2
Fabric Dyeing Methods Page 1 Commitment is included! Euro Air Industrivej Vest 21 DK-6600 Vejen Tel +45 74 84 28 80 Fax +45 74 84 28 81 [email protected] At Euro Air A/S we have a sub supplier Kemotextil a/s for dyeing our fabric. All chemicals and colors which are used in their dyeing processes are approved for Oeko‐Tex® 100. Our sub supplier mainly uses 2 different methods for dyeing our fabric depending on fabric type and permeability. The two methods are: 1. Jigger dyeing 2. Beam dyeing Which dyeing process is used? Dyeing process Fabric type DFC40 DFC325 Trevira 50 Polyester 50 Trevira 150 Polyester 150 Trevira 325 Polyester 325 Trevira 550 Polyester 550 Trevira 775 Polyester 775 Trevira 1240 Polyester 1240 Jigger √ √ √ X X X X X Beam XX X √ √ √ √ √ Jigger dyeing: • min. 300 m – max. 1500 m fabric Jigger dyeing process: In the dyeing on jigger machines the cloth revolves on two main rollers. The open‐width fabric passes from one roller through the dye bath at the bottom of the machine and then onto a driven take‐up roller on the other side. When all the fabric has passed through the bath, the direction is reversed. Each passage is called an end. Dyeing always involves an even number of ends. The dye bath has one or more guide rollers, around which the cloth travels, and during this immersion achieves the desired contact with the dye liquor. During this passage the fabric picks up adequate quantity of dye liquor, excess of which is drained out but still a good Feed roller Take up roller Dye bath Guide rollers Schematic diagram of a jigger dyeing machine
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At Euro Air A/S we have a sub supplier Kemotextil a/s for dyeing our fabric.
Transcript of Fabric Dyeing Methods
Fabric Dyeing Methods
Page 1
Commitment is included!
Euro Air Industrivej Vest 21 DK-6600 Vejen Tel +45 74 84 28 80 Fax +45 74 84 28 81 [email protected]
At Euro Air A/S we have a sub supplier Kemotextil a/s for dyeing our fabric. All chemicals and colors which are used in their dyeing processes are approved for Oeko‐Tex® 100. Our sub supplier mainly uses 2 different methods for dyeing our fabric depending on fabric type and permeability.
The two methods are:
1. Jigger dyeing 2. Beam dyeing
Which dyeing process is used?
Dyeing process Fa
bric type
DFC40
DFC325
Trevira 50
Polyester 50
Trevira 150
Polyester 150
Trevira 325
Polyester 325
Trevira 550
Polyester 550
Trevira 775
Polyester 775
Trevira 1240
Polyester 1240
Jigger √ √ √ X X X X X Beam X X X √ √ √ √ √
Jigger dyeing:
• min. 300 m – max. 1500 m fabric
Jigger dyeing process:
In the dyeing on jigger machines the cloth revolves on two main rollers. The open‐width fabric passes from one roller through the dye bath at the bottom of the machine and then onto a driven take‐up roller on the other side. When all the fabric has passed through the bath, the direction is reversed. Each passage is called an end. Dyeing always involves an even number of ends. The dye bath has one or more guide rollers, around which the cloth travels, and during this immersion achieves the desired contact with the dye liquor. During this passage the fabric picks up adequate quantity of dye liquor, excess of which is drained out but still a good
Feed roller Take up roller
Dye bath Guiderollers
Schematic diagram of a jigger dyeing machine
Fabric Dyeing Methods
Page 2
Commitment is included!
Euro Air Industrivej Vest 21 DK-6600 Vejen Tel +45 74 84 28 80 Fax +45 74 84 28 81 [email protected]
quantity is held in the fabric. During rotation of rollers the dye liquor penetrates and diffuses into the weave. The real dyeing takes place not in the dye liquor but when the cloth is on the rollers, since only a very small length of fabric is in the dye bath and major part is on the rollers. Therefore the speed of cloth during immersion in dye liquor has a very little effect on percentage of shade produced. Beam dyeing:
• min. 25 kg. – max. 100 kg. fabric Beam dyeing process:
The beam dyeing machine operates with the same principle as that of package dyeing and Hank dyeing machines. It can be effectively used to dye yarn or fabric. The process works like this, fabric or yarn in open width is rolled on to a perforated beam. The beam then subsequently slid into a vessel that is closed and pressurized. The color impregnates the fabric as the dye liquor is allowed to go on circulating through the perforations in the beam. Usually the beam machines are designed in such a manner so as to hold a single beam or multiple beams in a batch.
Beam of cloth Part of beam carriage
Air bleed system Breechlock closurehydraulically operated
Heat exchanger
Liquor flow shown in the in to out
direction
D/C or variable frequency A/C drive
Duct pump suction lines
Drain via pump discharge
High pressure add pumpAdd tanks
Lid trolley
Breechlock closure hydraulically operated
Schematic diagram of a beam dyeing machine
