Fibres And Fabrics

Question 1

TWO TYPES OF FIBRES

Answer 1

Natural fibres: Come from nature.

Manufactured fibres: Man made using raw materials.

Question 2

NATURAL FIBRES

Answer 2

Plant: Cotton, linen.
Animal: Wool, silk.

Question 3

MANUFACTURED FIBRES

Answer 3

Regenerated fibres: Viscose and acetate.

Synthetic fibres: Nylon, polyester, acrylic.

Question 4

SYNTHETIC FIBRES

Answer 4

Made from crude oil.

Question 5

REGENERATED FIBRES

Answer 5

Made from a mix of natural substances,

Question 6

PRODUCTION OF COTTON

Answer 6

Cotton fibres come from the boll.
2-3cm long, white & fluffy.
Picked by hand or machine.
Fibres separated from seeds (GINNING).
Fibres pressed into bales.
Cotton graded according to length of fibres. 
Fibres combed and spun into yarn.

Question 7

DESIRABLE PROPERTIES OF COTTON

Answer 7

Absorbent
Strong
Cool

Question 8

UNDESIRABLE PROPERTIES OF COTTON

Answer 8

Creases
Shrinks
Doesn’t sretch

Question 9

PRODUCTION OF LINEN

Answer 9

Comes from flax plant in cool, damp climates eg: Ireland, Belgium, Russia.
Grows to a metre, stems pulled up by roots.
Stems left to soak for a few weeks to rot (RETTING)
Fibres separated from woody parts.
Fibres combed and spun into yarn.
Long fibres: Fine yarn.
Short fibres: Coarse yarn.

Question 10

SILK PRODUCTION

Answer 10

Produced since ancient times in China and Japan.
Produced by the silkworm.
Worms spin cocoons of silk.
Cocoon heated, soaked and threads removed.
Threads wound into reels and then spun into thicker yarn.

Question 11

WHAT ARE FIBRES?

Answer 11

Fine hair like structures used to make yarn. Yarn is then used to make fabric.

Question 12

PRODUCTION OF REGENERATED FIBRES

Answer 12

Cellulose from tree & cotton waste is pulped and mixed w/ chemicals.
It turns into a thick liquid.
Liquid is forced through tiny holes in a spinneret to make yarn.
Yarn is twisted and cut.