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Fabric dyeing machine - Winch

Fabric dyeing machine 

There are certain types of machines that are used for the fabric dyeing process.

1. Jigger dyeing machine
2. High-temperature jigger dyeing machine
3. HT vacuum jigger dyeing machine
4. Winch dyeing machine
5. High-temperature beam dyeing machine
6. Pad dyeing machine
7. Jet dyeing machine
8. Soft overflow jet dyeing machine
 

Winch Dyeing machine

Conventional winch dyeing machine construction

In terms of construction, the winch dyeing machine differs greatly from the jigger. 

Furthermore, it's run differently. it's made of a vat (vessel) with a curved back. 

A horizontal elliptical winch that extends the length of the vat is mounted over the highest and is sometimes rotated by a separate motor, but it's occasionally powered by a belt drive from a shaft next thereto. 

A perforated plate separates the narrow chamber along the front of the dyeing vat so the bulk of the dye liquor can tolerate the perforations and blend with the bulk of the dye liquor. 

This chamber also houses the inlets for chemicals and steam. Over the narrow chamber but closer to the winch and at roughly the identical height, a material guide roller of modest diameter spans the whole width of the vat. 

Typically, the winch is placed closer to the rear of the machine than the front. Typically, a winch machine is employed to dye textile materials within the shape of a rope. The figure below illustrates the key components of an easy winch. 

Winch dyeing machine Threading of the fabric
Winch dyeing machine Threading of the fabric

In terms of construction, the winch dyeing machine differs greatly from the jigger. Furthermore, it's run differently. it's made from a vat (vessel) with a curved back. 

A horizontal elliptical winch that extends the length of the vat is mounted over the highest and is typically rotated by a separate motor, but it's occasionally powered by a belt drive from a shaft next to that. 

A perforated plate separates the narrow chamber along the front of the dyeing vat so that the bulk of the dye liquor can meet up with the perforations and blend with the bulk of the dye liquor. This chamber also houses the inlets for chemicals and steam. 

Over the narrow chamber but closer to the winch and at roughly the identical height, a cloth guide roller of modest diameter spans the whole width of the vat. 

Typically, the winch is placed closer to the rear of the machine than the front. Typically, a winch machine is employed to dye textile materials within the shape of a rope. The figure below illustrates the key components of a simple winch. 


Dyeing : 

The necessary amount of water is poured into the winch to realize the proper material-to-liquor ratio, which is often between 1:20 and 1:40.

While the material is being dyed, a concentrated solution of the dyeing liquor is poured into the water at the front chamber. the method of dying the material begins when the dye liquor diffuses or passes through the perforations of the dividing plate. 

The open-ended pipe located within the front chamber is employed to heat the alcohol. so as for them to combine uniformly with the first dye liquor, additions of dye liquor and other helpers are occasionally made within the front chamber. 

The temperature of the liquor is usually heated to between 60 and 90 degrees Celsius, betting on the procedure being utilised and also the material being coloured.


(b) High-temperature winch:

The high tension, which causes yarn flattening, prevents dyeing on HT pressurised jiggers for fabrics made of texturized yarns. Winches with carrier dyeing experience significant coverage of barrenness issues. 
The warm-temperature winch has so taken the place of the quality winch. 
The material is kept taking possession of the dye bath struggling during this machine by the winch, guide roll, and bath being enclosed in an exceedingly pressurised vessel. 
The only difference between this and beam dyeing is that during this instance the material moves against the dye fluid. 

(c) High-temperature winch with circulating liquor:

This device is a completely enclosed rope-type winch dyeing machine. This machine encompasses a pump that circulates the dye liquor, enabling the dyeing system's constant dyeing temperature. 

As a result, the dye bath is heated and cooled at a faster pace than in systems where the dye liquor is at rest. 

When a carrier is used, it evaporates, condenses, and drops back onto the material, leaving stains in its wake. 

A little of the dye liquid is sprayed onto the machine's walls to redissolve the condensate to forestall this. The figure below depicts one such device. 

High-temperature winch beck with circulating liquor

High-temperature winch beck with circulating liquor

High-temperature winch beck with circulating liquor  

You can use any kind of auxiliaries and colours. Additionally, carriers are employed sparingly (1-2 g/l). If sufficient arrangements are made for heating, cooling, and correct circulation of dye fluid, a whole dyeing cycle takes around 4-6 hours. 

Rope markings may result from this procedure, but they can be prevented by jogging quickly, consuming more alcohol, precisely controlling the heating and cooling times, and applying minimal lengthwise tension. A jet dyeing machine substantially satisfies these requirements. 

Questions -

  1. What are the types of fabric dyeing machines?
  2. Explain the winch dyeing machine for the fabric.

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