Comparison
Bio-PET Film Grade Z vs PLA
A side-by-side comparison of Bio-based Polyethylene Terephthalate, Film Grade Z and Polylactic Acid.
Physical
Density
1.39 g/cm³
1.24 g/cm³
Water Absorption (24h)
0.3 %
0.5 %
Transparency
Excellent
Semi-transparent
Shrinkage
0.8 - 1.5 %
0.3 – 0.5 %
Mechanical
Young's Modulus
2.8 GPa
3.5 GPa
Tensile Strength
55 MPa
50 – 65 MPa
Elongation at Break
10 %
6 %
Impact Strength (Izod)
0.3 J/cm
16 J/m
Flexural Strength
—
80 MPa
Thermal
Glass Transition Temperature
75 °C
60 °C
Melting Point
250 °C
150 – 160 °C
Continuous Service Temperature
70 °C
45 °C
Heat Deflection Temperature
60 °C
55 °C
Electrical
Dielectric Constant
3.1
3.0
Volume Resistivity
10¹⁴ Ω·cm
10¹⁴ Ω·cm
Dielectric Strength
21 kV/mm
—
Chemical resistance
Acids
Good resistance
Fair
Bases
Poor resistance
Poor
Solvents
Resistant to oils and greases, but can be affected by strong bases and chlorinated solvents
—
UV Resistance
Moderate
Poor
Alcohols
—
Fair
Hydrolysis
—
Poor
Sustainability
Recyclability
Recyclable (same as fossil-based PET)
Industrially compostable
Recycling Code
1 (PET)
7
Carbon Footprint
Reduced compared to virgin fossil-based PET
~1.6 kg CO₂e / kg
Bio-based Content
—
100 %