GATE (TF) Textile 2013 Question Paper Solution | GATE/2013/TF/08

Question 8 (Textile Engineering & Fibre Science)

Fibre individualization in a card will increase by increasing

(A)Licker-in to cylinder setting
(B)Doffer speed
(C)Licker-in speed
(D)Cylinder speed
Answer / Solution
[Show Answer]

Option D

Frequently Asked Questions | FAQs

What does carding do to fibres?

Carding is a fiber preparation technique used in textile production to separate, clean, and align fibers in preparation for spinning yarn. It involves using carding tools, such as carding brushes or carding machines, to open up, separate, and comb the fibers to create a continuous web of fibers that can be spun into yarn. Carding has several effects on fibers, including:

Fiber Separation or Individualization: Carding helps to separate and open up clumps or locks of fiber, such as raw fleece, so that individual fibers are loosened and separated from each other. This process helps to remove dirt, grease, and other impurities that may be present in the fiber, making it cleaner and more suitable for spinning.
Fiber Alignment: Carding aligns the fibers in a parallel fashion, all facing in the same direction. This creates a continuous web or batt of fibers with the fibers lying parallel to each other. This alignment helps to improve the quality of the resulting yarn, as it ensures that the fibers are evenly distributed and parallel, resulting in a more consistent yarn with fewer irregularities.
Fiber Blending: Carding can also be used to blend different types or colors of fibers together. By feeding multiple types or colors of fibers through the carding process, they can be thoroughly mixed and blended, resulting in a homogenous blend of fibers in the batt. This allows for the creation of unique and custom yarns with desired color combinations or fiber characteristics.
Fiber Fluffing: Carding can fluff up the fibers, making them loftier and more airy. This can create a lofty, soft, and light yarn with good insulation properties, which is desirable in some types of yarns, such as those used for warmth in winter garments or for filling in quilts and pillows.
Fiber Preparation: Carding can also prepare the fibers for spinning by forming them into a roving, which is a long, narrow bundle of aligned fibers ready for spinning. The carded fiber can be rolled into a roving, which is then pulled and twisted to create yarn.
Overall, carding is an important step in fiber preparation for spinning yarn, as it helps to clean, separate, align, and blend fibers, ultimately resulting in a more consistent and desirable yarn for textile production.

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