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9 Questions

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Introduction to Carding Process

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Questions and Answers

What is the primary objective of the carding process?

Eliminating impurities from the cotton

Opening the cotton completely (correct)

Increasing the blending of fibers with each other

Making the cotton fibers almost straight

What is one of the objectives of cleaning the cotton completely in the carding process?

Increasing the blending of fibers with each other

Converting the cotton into (sliver) a regular, round strip

Making the cotton fibers almost straight

Getting rid of any impurities that may remain in it (correct)

What does converting cotton into a regular, round strip in the carding process aim to achieve?

(Sliver) a regular strip for weaving

Appropriate weight for the type of yarn (correct)

(Sliver) a round strip for knitting

(Sliver) an irregular strip for spinning

What is the purpose of eliminating a specific percentage of very short cotton fibers in the carding process?

To affect the regularity of the yarns Signup and view all the answers

What is the gauge of Raschel machines expressed by?

Number of needles per 2 inches Signup and view all the answers

How many warp groups and bar guides do Raschel machines typically have?

At least 4 warp groups and 4 bar guides Signup and view all the answers

What is the function of the sinker in Raschel stitch formation?

Press on the stitch and hold it Signup and view all the answers

What is the primary characteristic of fabric structures produced on Raschel machines?

They usually have holes Signup and view all the answers

What does the needle do during step 5 of Raschel stitch formation?

Descends to close an old stitch with a needle latch and feeds yarn inside the needle Signup and view all the answers

Study Notes

Carding Process

The primary objective of the carding process is to align and clean the cotton fibers.
One of the objectives of cleaning the cotton completely in the carding process is to remove impurities and dirt.
Converting cotton into a regular, round strip in the carding process aims to achieve uniformity and orientation of fibers.
The purpose of eliminating a specific percentage of very short cotton fibers in the carding process is to improve the strength and quality of the fibers.

Raschel Machines

The gauge of Raschel machines is expressed by the number of needles per inch.
Raschel machines typically have two warp groups and four bar guides.
The function of the sinker in Raschel stitch formation is to form loops and guide the yarn.
The primary characteristic of fabric structures produced on Raschel machines is their warp-knitted structure.
During step 5 of Raschel stitch formation, the needle inserts the yarn into the existing loops to form a new loop.

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Description

Learn about the carding process and its objectives including opening the cotton fibers, cleaning the cotton, increasing fiber blending, and eliminating impurities. Understand the significance of the carding process in textile manufacturing.