Polyethylene Terephthalate - PET Amorphous

Sep 4 2001

Polymer Type

Thermoplastic

Advantages

Superior clarity. Excellent barrier properties. Suitable for food packaging applications. Recyclable.

Disadvantages

Very susceptible to heat degradation. Excessive shear heat should be avoided - therefore low screw speed and back pressure required. For optimum clarity, mould temperature should be kept between 10°-50°C ( 50°-120°F ).

Typical Properties

Property

Value

Density (g/cm3)

1.33

Surface Hardness

RM30

Tensile Strength (MPa)

55

Flexural Modulus (GPa)

2.3

Notched Izod (kJ/m)

0.02

Linear Expansion  (/°C x 10-5)

8

Elongation at Break (%)

300

Strain at Yield (%)

3.5

Max. Operating Temp. (°C)

60

Water Absorption (%)

0.16

Oxygen Index (%)

20

Flammability UL94

HB

Volume Resistivity (log ohm.cm)

16

Dielectric Strength (MV/m)

40

Dissipation Factor 1kHz

0.01

Dielectric Constant  1kHz

3.5

HDT @ 0.45 MPa (°C)

72

HDT @ 1.80 MPa (°C)

70

Material. Drying  hrs @ (°C)

2 @130

Melting Temp. Range (°C)

260 - 280

Mould Shrinkage (%)

0.4

Mould Temp. Range (°C)

20 -  30

Applications

Transparent films. Crystal clear bottles for soft drinks.

 

Source : Abstracted from Plascams

For more information on Plascams please visit RAPRA Technology Ltd.

 

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