3.2.4 sources and origins Flashcards
(7 cards)
staple fibres
fluffier, harrier and must be spun
filament fibres
smoother and dont need to be spun, just twisted
silk
FILAMENT
-silkworm cocoon cleaned and softened to remove gum.
silk is unravelled into long threads
wool
STAPLE
sheep is shorn to remove fleece at once.
wool then washed and undergoes CARDING to straighten fibres
cotton
STAPLE
in warm climate, seedpods (bolls) open.
cotton is harvested, cleaned and separated from organic matter.
fibres then straightened
linen
STAPLE
from cellulose fibres that grown in stalks of flax plants.
stem is pulled and beaten and left to dry before fibres are separated from wooden stems
chemical fabrics
crude oil polymerised to create a long polymer chain created by chemical synthesis.
polyester
lycra
nylon