PLASTIC EXTRUSION MATERIALS

Material Type Density (gms/cm3) Temperature range for use. °C Characteristics Applications
UPVC
(Rigid PVC)
1.4 – 1.6

Low cost.
Self-extinguishing.
Wide range of colours and grades (including clear grades).
Indoor and outdoor use, good chemical resistance.

Windows frames, tubes, drainage pipe, trunking, fencing, trims, electrical trunking 
PVC
(flexible PVC)
1.2 – 1.6

Wide range of softness and colours available.
Both indoor and outdoor use.
Low cost.

Gaskets, seals, bumpers, sleeves, straps, trims, medical tubing
ABS

1.0 – 1.2 -20 to 80

Good impact resistance due to synthetic rubbers.
Good high and low temperature resistance.
Zero halogen grades available.
Good adhesive properties.
Mainly internal use.
Good rigidity and chemical resistance.
Fire resistant grades available.

Automotive trim and interior components, phones, golf club heads, water transfer tubing, freezer cabinets, toys
H.I.PS
(High Impact Polystyrene)

1.0 Mostly used indoors but outdoor grades are available.
Good adhesive properties.
Range of colours also clear grades available.
Medium cost.
Fire resistant grades available.
Light diffusers, point of sale displays, tubes

POLYETHYLENE

High Density (HDPE)

Low Density (LDPE)

0.91 -0.93 (LD)0.94 -0.97 (HD)

Good chemical resistance.
Good low temperature performance.
Tough.
Low smoke, zero halogen grades available.
Good impact resistance.
Low specific gravity.

LDPE

Squeeze bottles, water pipe, tubes, packaging, carrier bags

HDPE

Chemical drums, packaging, pipes and tubes

POLYPROPYLENE
0.90

Good resistance to chemicals .
Inernal hinge properties.
Good high temperature resistance.
Mainly indoor but some external use.

Non load bearing hinges,  tubes, pipe, electrical cable insulation
POLYCARBONATE 1.20 Good high temperature performance.
Extremely strong.
Wide range of grades available including U.V. stabilised and superior flame retardant grades.
Clear and opaque grades available.
Higher cost.
Limited chemical resistance.
Water bottles, light diffusers, optical reflectors, eye protection
TPE
0.9 – 1.2 Wide range of grades and hardness.
Replaces flexible PVC.
Medical uses.
Good recovery.
Medical tubing, straps, bushes,electrical cable insulation, door seals
NYLON 6
1.2

Expensive but cheapest of the nylon grades.
High tensile strength.
Tough.
Good resistance to abrasion with low friction properties.

Gears, Bearings, pneumatic airline tubing, rods