Plastics

Thermoplastic

Soften when heated which means they can be formed into different shapes easily.

Suitable for Injection moulding, Vacuum forming, Blow moulding.

 

 

Material Description Uses
Polystyrene

Cheap

Light weight

Blister package

Blister package

Food containers

Model kits

Blister packaging

Cheap toys

Polystyrene (expanded)

Very light,

Very good insulation

Fast food containers

Fast food containers

Protection for electrical equipment, e.g. Televisions

 

Polypropylene and ABS 

Very Strong

Scratch Resistant

Expensive

(ABS Stronger)

Polypropylene chair

Nintendo  GBA (the old one)

Chair seats,

Mobile phones

Walkmans

Toys

Polyvinyl Chloride (PVC) Strong, good scratch resistance

(Rigid) Pipes,(Flexible) Packaging, Textiles

LDPE

Low Density Polyethylene

Flexible

Strong

This is used for washing up...you probably don't know what that is!

carrier bag

Squeezy bottles

Carrier bags

 

HDPE

High Density Polyethylene

Strong

Lower quality than polystyrene and polypropylene

HDPE Bucket

Buckets

Bowls

Nylon Can be rigid or flexible

Clothes (flexible)

Gear wheels for clocks, DVD player and walkmans

PET  

(polyethylene- terephthalate)

Strong enough to stop fizzy bottles exploding

Flexible

Bottles for food and drink (up to 2 litres)
Polycarbonate Rigid, Strong
Cool !!!

Riot shields

Safety spectacles

Acrylic Hard and Rigid, good surface finish,

liable to crack not bend

Display signs

Clock faces

Fake finger nails

 

PLASTICS SOFTEN THEY DO NOT MELT.

Thermosetting Plastics

· Does not go soft when heated.

· Ideal for sauce pan handles, kettle handles, plugs -why?

 

Plastic Properties Uses
Phenolic Resin  (Bakelite) Strength, Hardness, rigidity, very low cost Pan handles, knobs, electrical switches
Melamine Resists scratching Table tops, kitchen surfaces