Comparison
PVDC Barrier Film vs PETG
A side-by-side comparison of Polyvinylidene Chloride for Barrier Films and Polyethylene Terephthalate Glycol.
Physical
Density
1.6-1.7 g/cm³
1.27 g/cm³
Water Absorption (24h)
<0.2 %
0.13 %
Transparency
Good
Transparent
Shrinkage
0.3-0.6 %
0.2 – 0.5 %
Mechanical
Young's Modulus
1.0-1.5 GPa
2.1 GPa
Tensile Strength
30-50 MPa
50 MPa
Elongation at Break
10-40 %
120 %
Impact Strength (Izod)
20-40 J/m
100 J/m
Flexural Strength
—
70 MPa
Thermal
Glass Transition Temperature
70-80 °C
80 °C
Melting Point
N/A (degrades)
—
Continuous Service Temperature
50-60 °C
65 °C
Heat Deflection Temperature
50-60 °C
70 °C
CTE
—
68 × 10⁻⁶ /K
Electrical
Dielectric Constant
3.5-4.5
3.3
Volume Resistivity
10¹⁰-10¹² Ω⋅cm
10¹⁴ Ω·cm
Dielectric Strength
10-20 kV/mm
—
Chemical resistance
Acids
Good resistance
Good
Bases
Good resistance
Fair
Solvents
Insoluble in most common solvents
—
UV Resistance
Fair (requires formulation)
Fair
Alcohols
—
Good
Oils
—
Good
Sustainability
Recyclability
Challenging due to multilayer structures
Recyclable
Recycling Code
3 (PVC) or depends on multilayer
1
Carbon Footprint
Moderate to High
~2.7 kg CO₂e / kg
Bio-based Content
—
0 %