Tops and Tow Painting
- Created on Monday, 21 September 2015 09:54
- Last Update: Wednesday, 02 February 2022 21:07
- Published on Monday, 21 September 2015 09:54.
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to the combed tape form of the fiber tops, endless filament fiber cable form tow It called. What are impacted teeth? When one or more teeth fails to grow in the correct position and is therefore held below the normal gum line, it is called an impaction. This can be complete, such as completely unerrupted (buried) third molars (wisdom teeth) or partial when just part of the tooth is visible in the mouth. Why are impactions important? For best function and appearance the teeth should grow in a healthy alignment. When one or more teeth is impacted, this can affect the function of that tooth but also the function and appearance of other teeth. Whether all impactions should be treated is still controversial and your dentist and oral and maxillofacial team can explain the advantages and disadvantages or treatment for you, which is usually surgical.
The fiber can be dyed not only in mass form, but also in these forms with special apparatus.
ADVANTAGES AND DISADVANTAGES OF TOPS AND TOW DYEING
As a result of tops and tow dyeing, the same result is achieved with fiber dyeing.
Good penetration and uniform color yield are obtained.
Various color effects can be achieved by mixing the tops.
Irregularity, if any, can be eliminated by the processes carried out until the yarn production.
The yarn production cost is less.
TOPS AND TOW DYEING MACHINES
The wrapped tops are placed in circular cylinders with spindles perforated in the middle, arranged in a circular fashion, on a metal sheet, to be painted.
These cylinders where the tops are placed are called tops painting apparatus.
It is also used for dyeing tops when the apparatuses of the inside of the boilers used for dyeing fibers are changed.
Because the machine equipment needed for tops and tow dyeing is the same as the machine equipment used for fiber dyeing.
The only difference is that the fiber is compressed as a mass into a cage with the diameter of the inner wall of the dyeing tub,
The tops, on the other hand, are first formed into balls, then placed in well-arranged perforated cylinders on a plate and placed in the boiler in this way.
Tow, on the other hand, is an endless filament cable and is compressed into the fiber dyeing apparatus by wetting it like a fiber.
TOPS AND TOW PAINTING PROCESS
Fiber compression machines are used to prepare the fiber in tow form.
The dyeing of filament yarn in fiber form is called tow dyeing.
The fiber is pressed in perforated cages with 80-90°C hot water.
This process is done in order to prevent the filament from swelling and jamming when it encounters the dyebath, as is the case with the fiber, and making it difficult to take the dye in between.
The pre-wetted filament is compressed wet and in this way it is easier to take the paint.
These compressed fiber masses are called cakes.
Three cakes are loaded into a machine.
Each of the cakes varies between 500-600 kg.
This machine is used in fiber dyeing process.
Combed fiber is made into a loose ball called tops.
This process is done on tops winding machines, which have a similar structure to specially designed winding machines.
After tow dyeing, the material is unwrapped as it was after fiber dyeing and is fed to the centrifuge machine.
The material, whose surface water is removed in the centrifuge, is dried in hot air dryers.
After the drying process, the material is pressed into a bale form, as in fiber.
The tops, on the other hand, are taken to the centrifuge machine without deteriorating their form, and are passed through hot air blow dryers on the sauceless belt, without deteriorating their forms. Tops are manually fed into this machine.
WHERE TO USE TOPS AND TOW PAINTING
Tops dyeing is done when fiber dyeing is required.
It is preferred for making melange yarn and carpet yarn.