Yarns

Question 1

Name 5 different fancy yarns and describe what they are.

Answer 1

1. Slub - single or folded yarns having or thick places regularly or irregularly.
2. Knop - folded yarns containing short, often coloured bunches of fibres or yarn at regular or irregular intervals.
3. Bouclé - specialised folding process which result in looped yarns.
4. Chenille - cut pile yarn soft and voluminous.
5. Jaspé - two or more yarns made from different colours twisted together.
6. Mixture - yarn made by mixing fibres of different colours during spinning.

Question 2

What is textured yarns?

Answer 2

Yarns which are permanently bulky by various process.

Question 3

Name 2 different textured yarns.

Answer 3

1. False-twisting texturing
2. Air-jet texturing
3. Stuffer-box texturing
4. Knit-deknit texturing

Question 4

What is False-twisting texturing method?

Answer 4

Heated and twisted then cooled and untwisted.

Question 5

What is Air-jet texturing method?

Answer 5

Yarn is fed through a turbulent air stream causing entangled loops to be formed.

Question 6

What is knit-reknit texturing method?

Answer 6

The yarn is knitted int a tube on a circular knitting machine. Its then heat set and unravelled this creates a crinkled yarn.

Question 7

What are Slub yarns?

Answer 7

Single or folded yarns having or thick places regularly or irregularly.

Question 8

What are Knop yarns?

Answer 8

Folded yarns containing short, often coloured bunches of fibres or yarn at regular or irregular intervals.

Question 9

What are Bouclé yarns?

Answer 9

Specialised folding process which result in looped yarns.

Question 10

What are Chenille yarns?

Answer 10

Cut pile yarn which is soft and voluminous.

Question 11

What are Jaspé yarns?

Answer 11

Two or more yarns made from different colours twisted together.

Question 12

What are Mixture yarns?

Answer 12

Yarns made by mixing fibres of different colours during spinning.

Question 13

What type of cross section does Cotton have?

Answer 13

Flattened kidney bean-like cross section which has a lumen (absorbs water) which makes it absorbent.

Question 14

What type of cross section does Linen have?

Answer 14

Many sides to the cross section which makes it more likely to reflect surfaces which give lustre.

Question 15

What type of cross section does Silk have?

Answer 15

A triangular shaped cross section which gives silk the lustre and softness.

Question 16

What type of cross section does Wool have?

Answer 16

x

Question 17

What type of cross section does synthetic fibres have?

Answer 17

x