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Some important parameters to beconsidered in Exhaust dyeing:
Liquor Ratio (textile that is dyed/w ater used in
dyeing bath)
Dyeing Method (temperature/time curves;
Double bath or single bath process in case of
fiber mixtures)
Nature of Dyestuff, auxiliaries
Degree of exhaustion degree of dyestuff s
Number of rinsing bathes and nature of after
treatments required
Colour Index Dyes Pigments Applications Machinery Glossary FAQ's
Buyers Gui
What is Dye | Types of Dyes | Dye House | Dyeing Process |
Dyeing Machinery | FAQs on Dyes | Buyer's Guide to Dyes
Dyeing Process basically discusses w hat you do w ith the dyes.
There are today available latest and state-of -the-art dyeing
methods that
effectively colour the various substrates. This is a very
critical operation carried out in the Dye houses in a series of
steps. The pages here
gives precious information regarding the various dyeing
processes in different industries.
Dyeing ProcessBatch Dyeing ProcessBatch Dyeing
Process
Continuous Dyeing
Process
Semi-continuous Dyeing
Process
Pigment Dyeing
Process
atch Dyeing Process is the most popular and
ommon method used for dyeing of textile
materials. Batch dyeing is also sometimes
eferred to as Exhaust dyeing. This is because
this process, the dye gets slowly transferred
om a comparatively large volume dyebath to the
ubs trate or material that is to be dyed. The time
aken is also longer. The dye is meant to
xhaust' from dyebath to the substrate. In batch
rocesses, textile subs trates can be eas ily dyed
t any stage of their assembly into the desired
extile product. This includes fiber, yarn, fabric or
arment. Some type of batch dyeing machines
an function at temperatures only up to 1000oC.
orexample cotton, rayon, nylon, wool etc. can
e dyed at 1000oC or lower temperatures. While polyester and s
ome other synthetic fibers are dyed at
000 Centigrade or even higher temperatures. There are three
general types of batch dyeing machines.
he first type is the one where there is circulation of fabric.
Second type is the one where the dyebath
ets circulated while the material that is being dyed remains
stationary, and finally the third type where
oth the bath and material to be dyed gets circulated. Examples
of dyeing machines that utilizes batch
yeing process are Beck, Jet, Jigs, Beam Package dyeing machines
etc.
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8/12/2019 Batch Dyeing Process,Batch Dyeing Process for
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mage showing Popular machines utilizing the batch dyeing method
illustrated above.
Optimizing the Batch Dyeing Process
or any dyers the ultimate dream is to get the maximum out of the
process of dyeing, at minimal cost.
or a batch dyeing process the following techniques can prove to
be effective for optimum utilization.
Use machinery that are fitted with latest state-of-the-art
automatic controllers of fill volume,
temperature and other dyeing cycle parameters, indirect system
of cooling and heating,
innovative hoods and doors that lessens vapour losses .
Choosing the machinery that is exactly sized for the batch that
needs to be processed. Also
confirmation that it is operated exactly within the specified
range of nominal liquor ratios for
which it is designed. It has been seen that machines that are
operated with a consistent liquor
ratio while being loaded at 60 percent level of their nominal
capacity gives optimum results. With
yarn dyeing machines this level can stretch to even 30% of the
nominal capacity.
Opting new machineries that adheres to the following
requirements:
Liquor ratio that is low-or-ultra-low.
Complete in process separation of bath from substrate.
Mechanism that involves smooth internal separation of process
liquor from the washing
liquor.
![Batch Process Presentation]](https://img.dokumen.tips/doc/110x75/577d27051a28ab4e1ea2d751/batch-process-presentation.jpg)
