Winch dyeing machine:

A dyeing machine consisting essentially of a dye vessel fitted with a driven winch (usually above the liquor level) which rotates and draws a length of fabric normally joined end to end, through the liquor. Winch dyeing machines are a low cost design that is simple to operate and maintain, yet versatile in application proving invaluable for preparation, washing or after treatments as well as the dyeing stage itself. In all winch dyeing machines a series of fabric ropes of equal length are immersed in the dye bath but part of each rope is taken over two reels or the winch itself. The rope of fabric is circulated through the dye bath being hauled up and over the winch throughout the course of the dyeing operation. Dyestuff and auxiliaries may be dosed manually or automatically in accordance with the recipe method.

Study Of Winch Dyeing Machine|
Textile Dyeing Machineries

Main Parts of Dyeing Machine:

Home ship or bedroom
Drum winch or reel
Heat exchanger
Buzzard
Tank reserve
Chemical dosing tank
Utility lines, water line, line of immigration, steam inlet, etc.
The controller or processor
Weaving PLAITER

Study Of Winch Dyeing Machine
Textile Dyeing Machineries

Advantages of Winch Dyeing:

Ø Construction and operation of winch are very simple;

Ø The winch dyeing machines are suitable for types of wet processing operations from desizing to softening;

Ø The winch dyeing machine is suitable for practically all types of fabrics, which can withstand creasing in rope form processing;

Ø The tension exerted on winch is less than jigger; the material thus dyed is with fuller hand;

Ø The appearance of the dyed goods is clean and smooth on winch dyeing machines;

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Limitations of Winch Dyeing:

Ø Batch dyeing operations needs trimming, sewing, and opening out the rope, loading and unloading for individual lots separately;

Ø Since several lengths of fabric are run over the winch reel into the liquor and sewn end to end, Continuous length processing is not possible in a single batch;

Ø Fabric is processed in rope form which may lead to crease marks, particularly in heavy, woven, thin and light synthetics;

Ø Most of the machine works under atmospheric conditions. More Information on Winch Dyeing.

Features and Parameters:

Ø The machine operates at a maximum temperature 95-98°C;

Ø The liquor ratio is generally quite high (1:20-1:40);

Ø This is a dyeing machine for fabrics in rope form with stationary liquor and moving material;

Ø In winch machines, a number (1-40) of endless ropes or loops of fabrics of equal length (about 50-100m) are loaded with much of their length immersed in folded form inside the dye bath;

Ø As for all forms of rope dyeing, the fabric must be fairly resistant to length ways creasing;

Ø A perforated separating compartment, positioned at a distance of 15-30 cm from its vertical side creates an inter space for heating and for adding reagents;

Ø Heating can be supplied by means of direct or indirect stem heating;

Ø The rope passes from the dye bath over two elevated reels. The first roller is free-running (jockey or fly roller) and the second is winch reel;

Ø The winch reel not only controls the rate of movement of the fabric rope, but also the configuration of the rope in the dye bath;

Ø The winch reel does not grip the fabric positively, but by the weight of the wet fabric and the friction between the reel and fabric;

Ø Now-a-days stainless reels with corrugated and broken surface for increase frictional forces are used;

Ø The maximum motion speed of the fabric must be approximately 40m/min;

Ø The winch dyeing method is suitable for all fabrics, expects those which tend to originate permanent creases or which could easily distort under the winch stretching action.

Lab Winch Dyeing M/C

Dyeing Method on Winch Dyeing Machine:

Winch Dyeing Machine

The basic principle of all winch dyeing machines is to have a number of loops or ropes of the fabric in the dye bath, these ropes are of equal length , which are mostly immersed in the liquor in the bath. The upper part of each rope runs over two reels which are mounted over dyebath. At the front of the machine , above the top of the dye liquor , is a smaller reel, which is called jockey or fly roller. The fly roller remain free wheeling along with fabric rope. At the back of winch tank is the winch wheel, which pulls the fabric rope from the dye bath over the jockey reel for dropping in the dye bath for immersion. From the dropped location , the fabric rope travels back . to be lifted and fed to winch wheel. The dyeing process on winch dyeing machines is based on higher M:L as compared with other dyeing machines. The process is conducted with very little tension .The total dyeing time is lengthier as compared to other machines.

➤ Interview questions for Wet processing - (Part 1)

➤ Interview questions for Wet processing - (Part 2)

➤ Interview questions for Wet processing - (Part 3)

Finally,
Winch dyeing machine comes with a choice of cost-effective design low cost and simplicity of operation and maintenance characteristics after relentless when it hits versatility. From this experience, we know about the crane and the principle of its dyeing machine. They are very useful in our life mission

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