GATE (TF) Textile 2020 Question Paper Solution | GATE/2020/TF/31

Question 31 (Textile Engineering & Fibre Science)

Carding of polyester fibres requires that the values of wire-point density (points/inch2) of
(P) Licker-in (Q) Cylinder (R) Flat

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What is wire point density in carding?

Wire point density in carding refers to the number of wire points (or teeth) per unit area on the carding wire or card clothing used in the carding process. Carding is a mechanical process used in textile manufacturing to disentangle, clean, and align fibers to form a continuous web or sliver of fibers that can be further processed into yarn or fabric.
The carding wire or card clothing is typically made of a flexible material, such as wire or bristles, which are attached to a backing material. The wire points or teeth on the carding wire are used to catch and pull the fibers through the carding process. The wire point density refers to the number of wire points per unit area on the carding wire.
The wire point density can vary depending on the type of fiber being carded and the desired end product. Higher wire point densities are typically used for fine fibers or when a more uniform and consistent sliver is desired. Lower wire point densities are used for coarser fibers or when a more open and fluffy web or sliver is desired.
Overall, wire point density is an important factor in the carding process as it can affect the quality and characteristics of the final product.

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