Yarns And Spinning

Question 1

What type of standard yarns can cotton be made into?

Answer 1

Ring-spun or open-end spun

Question 2

Why is combed ring-spun yarn better quality than normal ring-spun yarn?

Answer 2

Fibres are more aligned so it is stronger and smoother

Question 3

Why are open-end spun yarns cheaper than ring spun?

Answer 3

They are quicker to make

Question 4

Name 2 types of standard yarn the wool can be made into.

Answer 4

Worsted and woollen

Question 5

Which type of yarn made from wool is traditionally used in good quality suits?

Answer 5

Worsted

Question 6

Which type of yarn, traditionally made from wool, is used to knit warm jumpers?

Answer 6

Woollen spun

Question 7

Which type of yarn is smoothest and most slippery, ideal for linings?

Answer 7

Flat multi-filament yarn

Question 8

Increasing the twist in yarn increases its? (4)

Answer 8

Strength, density, hardness and fineness

Question 9

Increasing twist in a yarn decreases its? (3)

Answer 9

Warmth, softness, and possibly hairiness

Question 10

What impact does increasing fibre alignment have on a yarn’s physical properties?

Answer 10

It will be stronger and less warm

Question 11

what impact does increasing a yarn’s fibre alignment have on the yarn’s appearance?

Answer 11

Makes it finer and smoother

Question 12

What process increases the strength of man-made filament yarn?

Answer 12

Drawing

Question 13

What process increases the warmth, bulk, and ‘natural handle’ of filament yarns?

Answer 13

Texturising

Question 14

What optional process for filament yarns makes them easier to weave, knit and sew?

Answer 14

Texturising

Question 15

What type of yarn is ideal for use in lining materials?

Answer 15

Flat multi-filament yarns

Question 16

Which type of filament yarn is most commonly used in clothing?

Answer 16

Textured multi-filament yarns

Question 17

Which type of filament yarn is least commonly used in clothing?

Answer 17

Mono-filament yarn

Question 18

What is the name given to a yarn with loops along the surface?

Answer 18

Boucle yarn

Question 19

Name the type of yarn that has lumps of fibre along its length

Answer 19

Knop yarn, slub yarn or bourette yarn

Question 20

Lingerie, tights and active sportswear are most commonly made from what type of yarn?

Answer 20

Tectured multi-filament with elastane

Question 21

Name 4 types of ‘fancy’ yarn

Answer 21

Boucle, knop, chenille, and jaspe

Question 22

Name the yarn that looks like thin ribbons of velvet

Answer 22

Chenille

Question 23

Folding yarns increases their regularities and therefore?

Answer 23

Their strength, fabric uniformity and productivity

Question 24

What spinning process results in the finest, smoothest and strongest cotton yarns?

Answer 24

Combing with ring-spinning

Question 25

How is ‘tex’ defined?

Answer 25

The weight of 1000 meter yarn

Question 26

name the spinning process for wool length fibres resulting in hairy, warm yarns.

Answer 26

Woollen spinning

Question 27

How does worsted spinning effect wool-length fibres?

Answer 27

It combs and aligns the fibres to make stronger, leaner, finer and cooler yarns

Question 28

What are monofilament yarns?

Answer 28

Continuous filaments but with only one (mono) filaments, less common than multi filament yarns

Question 29

What is the most popular monofilament?

Answer 29

Elastane

Question 30

What are the features of flat c.f yarns?

Answer 30

• held together with minimum twist
• slippery and compact
• produce smooth, silk like fabrics