What are natural fibres
either plant based such as cotton or linen or animal fibre such as wool
expand on natural fibres
-can be recyled
-will biodegrade and naturally reoccur
-eg a sheep will grow another wool coat as soon as the wool is sheared
Name 3 natural fibres
-Cotton
-Linen
-Wool
Properties of Cotton
-good absorption
-breathable
-low elasticity
-non allergenic
-tendency to crease
-no static cling
-holds up to 27 times its own weight in water
Uses of Cotton
coloured and non coloured clothing
breahtable property makes it good for clothing worn next to skin
denim jeans
bedding,socks,towels,natural nappies
Properties of Linen
Good absorbency
can hold up to 20x its own weight
breathable
high durability
lightweight
Uses of Linen
-Bedding
clothing such as suits,dresses, shorts and shirts
bags
homewares such as cushion covers and tableware
Properties of wool
-good thermal insulator
-high breathability
-good resistance to creasing
good absorption
some elasticity
good flame resistance
low durability
Uses of wool
Homewares such as rugs ,curtains,upholstery,carpets, clothing, sport and active wear
What are manmade fibres
do not occur naturally
they are synthetic and have been developed in a laboratory situation
-many are made from polymers
Name 3 manmade fibres
Nylon
Polypropylene
Polyester
Properties of Nylon
-does not absorb water
very durable
good elasticity
good tear resistance
does not crease
not very breathable
can create static electricity
Uses of Nylon
clothing
carpets
sails
parachute canopies
Properties of Polypropylene
does not absorb moisture
high durability
very lightweight
not very breathable
Uses of Polypropylene
-sporting and active wear
-fleece style garments
-ropes
-carpet and carpet backing
Properties of polyester
-good elasticity
-good crease resistace and shape retention
-very durable
-poor moisture absorption
-quick drying
-can produce static
often blended with other fibres such as cotton to enhance properties
Uses of polyester
-outwear such as jackets, trousers, shirts, childrens clothing, bedding
(often when blended with cotton)
upholstery,curtains
What are 2 common textile treatments
-Flame resistance
-Stain resistance
When is the flame resistance treatment used
-textiles can be treated by coating w a fire retardent which stiffins the texile
-method is often used in upholstery products such as sofa and chairs
texiles can be dipped in chemicals
the fibres absorb the chemical solution
creating a barrier between the fibre and the flame
How do the fire retardant chemicals work
-used for coating and dipping are activated by heat which triggers a chemical reaction to
-automatically extinguish the flame before fire damage can occur
How can stain resistance work
textiles can also be treated with polytetrafluoroethylene(PTFE)
to make them more resistant to liquid spills,soiling and grass stains
What happens when texiles are coated with PTFE (stain resistance)
when coated a v thin barrier is created which prevents liquids and dirt from penetrating the textile fibres
thus creating products which are easier to wipe clean, keepig their fresh look for longer