Polyethylene terephthalate glycol also known as PETG is a thermoplastic polyester providing the characteristics of significant chemical resistance, excellent formability, and durability. The material can be easily vacuumed and bent due to its low forming temperatures.
PETG has a great thermoforming characteristic for applications that needs complex die-cuts and detailed molds without dismantling its original structures. The product is mostly used in fabricating face mask and burn management devices.
The polyester is cost-effective and strong when compared to acrylic or polycarbonate. Its unique characteristics makes it suitable material for high-strength display units. Alongside, PETG can be used as food plastic and are fully recyclable. It is both vacuum-formable and thermoformable and hence can tolerate tremendous amount of pressure.
Sheet
Dimensions:
12 in x 12 in – 60 in x 96 in
Thickness:
0.020 in – 0.787 in
Note: Length, width, diameter, thickness can vary by brand, manufacture and grade.
Properties |
Units |
ASTM test |
PETG |
||
Tensile strength |
Psi |
D638 |
7700 |
||
Water absorption |
% |
D570 |
0.20 |
||
Izod impact |
ft-lbs/in of notch |
D256 |
1.7 |
||
Flexural modulus |
Psi |
D790 |
3,10000 |
||
Maximum temperature |
°F |
– |
– |
||
Heat deflection temperature |
°F |
D648 |
157 |
||
Coefficient of linear thermal expansion |
in/in/°Fx10-5 |
|
3.8 |
General PETG Properties
Impact resistance – It is lower-cost alternative to polycarbonate and is less brittle than acrylic.
Thermoforming – It has a thickness up to 0.080 and does not require drying prior to forming. Hence it has a rapid thermoforming cycle.
Chemical resistance – It has superior chemical resistance compared to other transparent plastics.
PETG sheet – For interface evaluation, it is mostly used.