What is jigger dyeing?
Jig Dyeing is an efficient method of dyeing fabric, the machine is also known by the name of “jigger”. A Jig Dyeing machine processes fabric by holding it on rollers in open width to avoid creasing. The Jig Dyeing machine operates by transferring the fabric back and forth through the dye bath between two reels.
What is jigger in textile?
Jigg or jigger dyeing machine is one of the oldest dyeing machines used for cloth dyeing operations. Jigger machine is suitable for dyeing of woven fabrics, up to boiling temperature without any creasing.
What is the correct process of dyeing technique?
A dyeing process is the interaction between a dye and a fibre, as well as the movement of dye into the internal part of the fibre. Generally, a dyeing process involves adsorption (transfer of dyes from the aqueous solution onto the fibre surface) and diffusion (dyes diffused into the fibre).
What is M L ratio in textile?
It is known as material liquor ratio MLR. When any wet processing is done in the textile industry fiber/yarn or fabric is worked/agitated in a volume of liquid. This has to be taken as a ratio; all additives (dyes/ auxiliaries /chemicals) that have to be added for the process will be based on the MLR.
How does a dyeing machine work?
In jet dyeing machines a strong jet of dye liquor is pumped out from an annular ring through which a rope of fabric passes in a tube called a venturi. This venturi tube has a constriction, so the force of the dye liquor passing through it pulls the fabric with it from the front to the back of the machine.
What is soft flow dyeing machine?
In the soft flow dyeing machine water is used for keeping the fabric in circulation. The conception difference of this equipment from a conventional jets that operates with a hydraulic system is that the fabric rope is kept circulating during the whole processing cycle (right from loading to unloading).
How do you make a dye solution?
For bright, strong colors, mix 4 to 6 teaspoons dye powder per cup of Urea water or plain water. For medium shades, mix 2 to 4 teaspoons dye powder per cup of Urea water or plain water. For light or pastel shades, mix ¼ to 2 teaspoons of dye powder per cup Urea water or plain water.
How is color added in solution dyeing?
The coloring agent is added to the liquid spinning solution before it is extruded through the spinnerette. The liquid spinning solution is sometimes called fiber dope. The color becomes part of the fiber itself and is permanent. A solution used as a binder in pigment dyeing.
What is the formula of dye?
Required Dye = (Shade percentage (%) x Weight of the fabric in gram (gm)/percentage (%) of Stock solution. Calculation of dyestuff will be, for, Rema Blue RR = (1.12 2x 5)/1=5.61 g/l.
What is overflow dyeing machine?
The overflow dyeing machine overflow dyeing machine is a special form of rope dyeing machine. The fabric is in a relaxed state during dyeing and is less subject to tension. The dyed fabric is soft to the touch and has a uniform color.
What is the function of caustic soda in dyeing?
(ii) Caustic Soda: – It is used to open up fabric for the absorption of dye. – It is a principal/major chemical that fixes the dye and hydrosulphite in fabric during dyeing.
How does solution dyeing work?
The Solution-Dye Process In simple terms, solution-dyeing is a technique that reduces the use of water and chemicals when dyeing fabrics compared to traditional wet processes. The solution-dye process involves mixing the colour pigments in with raw or recycled polyester, before they are made into filaments.
What is solution dyed?
As we mentioned above, in solution dyed fabrics the raw material itself is dyed rather than the finished yarn or garment. Solution dyeing is only applicable to man-made synthetic fabrics. This is how it works: In order to manufacture polyester fibers, colorless polymer chips are melted together with color pigments.
What is jigger dyeing machine?
It is one of the oldest dyeing machines for dyeing fabric. There are mainly two types of jigger dyeing m/c for dyeing woven fabrics with dyes. One is open jigger dyeing machine and other is closed jigger dyeing m/c. Normally after the process of dyeing machine dyed fabric is sent to stenter machine.
What is the use of a jigger machine?
Jigger machine is suitable for dyeing of woven fabrics, up to boiling temperature without any creasing. Jigs exert considerable lengthwise tension on the fabric and are more suitable for the dyeing of woven than knitted fabrics.
Can knitted fabrics be dyed in jigger dyeing M/C?
One is open jigger dyeing machine and other is closed jigger dyeing m/c. Normally after the process of dyeing machine dyed fabric is sent to stenter machine. It exerts lot of tension in the warp direction and because of this normally knitted fabrics, woolen, silk etc cannot dyed in jigger dyeing m/c because it is only for woven fabric.
What are the limitations of jigger dyeing?
There is little mechanical action in a jig machine and it is less suitable where vigorous scouring is required before dyeing. 5. Moiré effects or water marks may arise on some acetate and nylon fabrics because of pressure flattening the structure of the rolled fabric. Limitations of Jigger Dyeing 24.