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Polypropylene Film/Sheet
Available Configurations
Properties common to all products in this list
| Thickness | Size | Structure |
|---|---|---|
| 0.004 mm (film) to 25 mm (sheet) | 10 x 10 mm to 1000 x 1000 mm | Biaxially oriented |
Need custom configurations? Please contact us.
Key Features
Polypropylene Film (PP) is a semi-crystalline polyolefin film produced by cast or biaxial orientation extrusion, combining very low density, good chemical resistance, and negligible moisture absorption:
Biaxial Orientation Dramatically Enhances Performance
Biaxially oriented BOPP variants achieve tensile strength of 130–300 MPa and tensile modulus of 2.2–4.2 GPa, dramatically exceeding standard cast PP film and significantly improving barrier performance and dimensional stability for demanding flexible packaging and capacitor dielectric applications.
Good Chemical Resistance and Negligible Moisture Absorption
Good resistance to most acids, bases, and solvents, combined with moisture absorption of only 0.03%, supports chemically resistant liner, barrier film, and battery separator applications where dimensional stability in the presence of moisture or chemical exposure is required.
Good Dielectric Properties
Dielectric constant of 2.2–2.6 and dielectric strength of 30–40 kV/mm, combined with low density and chemical resistance, qualify PP film as a standard capacitor dielectric material in energy storage applications.
Very Low Density
Density of 0.9 g/cm³ is among the lowest of any polymer film in this product family, making PP the preferred lightweight film for flexible packaging laminates and applications where mass is a design constraint.
Broad Service Temperature Range
Service range of approximately −50 °C to 90–120 °C covers most flexible packaging and industrial film applications, with medical sterilization pouch grades qualified for steam sterilization processes.
Industrial Applications
Polypropylene Film is used across food and pharmaceutical packaging, capacitor manufacturing, medical sterilization, and battery separator applications wherever low density, chemical resistance, and dielectric properties determine material selection:
- ✦ Flexible Food and Pharmaceutical Packaging Laminates
- Used as the primary structural and barrier layer in flexible food and pharmaceutical packaging laminates, where BOPP variants provide the tensile strength, stiffness, and barrier performance required for demanding packaging applications.
- ✦ Capacitor Dielectrics
- Applied as capacitor dielectric film in energy storage and power electronics applications where the dielectric constant of 2.2–2.6 and dielectric strength of 30–40 kV/mm provide reliable, low-loss electrical performance.
- ✦ Medical Sterilization Pouches
- Used for medical sterilization pouches where steam sterilization compatibility, chemical resistance, and heat-seal capability qualify polypropylene for sterile barrier packaging of medical devices.
- ✦ Battery Separators
- Applied as battery separator film in lithium-ion and other battery systems where chemical resistance to electrolyte, controlled porosity, and dimensional stability are required.
- ✦ Fiber-Reinforced Composite Prepreg Release Films
- Used as release films for fiber-reinforced composite prepreg manufacturing, where chemical resistance, non-stick surface properties, and process temperature compatibility support clean demolding.
- ✦ Crystallization Kinetics, Membrane Filtration and Coating Research
- Serves as a model semi-crystalline polymer for crystallization kinetics, surface energy, and barrier property studies, and as a low-cost substrate for functional coating development, membrane filtration research, and electrochemical cell separator optimization.
Material Properties
| Element | Value |
|---|---|
| Acids - concentrated | Good-Fair |
| Acids - dilute | Good-Fair |
| Alcohols | Good |
| Alkalis | Good |
| Aromatic hydrocarbons | Fair |
| Greases and Oils | Good-Fair |
| Halogenated Hydrocarbons | Good-Poor |
| Halogens | Poor |
| Ketones | Good |
| Element | Value |
|---|---|
| Coefficient of friction | 0.1-0.3 |
| Hardness - Rockwell | R80-100 |
| Elongation at break( % ) | 150-300, for biax film >50 |
| Tensile modulus( GPa ) | 0.9-1.5, for biax film 2.2-4.2 |
| Izod impact strength( J m⁻¹ ) | 20-100 |
| Abrasive resistance - ASTM D1044( mg/1000 cycles ) | 13-16 |
| Tensile strength( MPa ) | 25-40, for biax film 130-300, |
| Element | Value |
|---|---|
| Dielectric constant @1MHz | 2.2-2.6 |
| Dissipation factor @ 1MHz | 0.0003-0.0005 |
| Dielectric strength( kV mm⁻¹ ) | 30-40 |
| Surface resistivity( Ohm/sq ) | 10¹³ |
| Volume resistivity( Ohmcm ) | 10¹⁶-10¹⁸ |
| Element | Value |
|---|---|
| Flammability | HB |
| Radiation resistance | Fair |
| Refractive index | 1.49 |
| Resistance to Ultra-violet | Poor |
| Limiting oxygen index( % ) | 18 |
| Water absorption - equilibrium( % ) | 0.03 |
| Density( gcm⁻³ ) | 0.9 |
| Element | Value |
|---|---|
| Heat-deflection temperature - 0.45MPa( C ) | 100-105 |
| Heat-deflection temperature - 1.8MPa( C ) | 60-65 |
| Lower working temperature( C ) | 50 |
| Upper working temperature( C ) | 90-120 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 1700-1900 |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 0.1-0.22@23°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 100-180 |
Tolerances
| Thickness | ±20% | |
|---|---|---|
| Linear dimension | <100mm | ±1mm |
| Linear dimension | >=100mm | +2 / -1% |