Plastic Film

Plastic film is a thin, flexible engineering material used for insulation, protection, packaging, and precision fabrication. Common options include Mylar (PET) film, PVC film, and polypropylene, each selected based on stability, chemical resistance, and clarity.

Available in roll form or as Mylar sheets, these materials are widely used in electrical insulation, graphics, and industrial prototyping where consistent thickness and performance matter.

Types of Plastic Film

Different plastic films are engineered for specific mechanical, thermal, and chemical requirements.

• FEP (Fluorinated Ethylene Propylene): FEP film is a transparent material that is chemically resistant, non-stick, resistant to high temperatures, non-flammable, and offers excellent electrical insulation. This versatile film is used in a wide range of applications, including 3D printing and electrical wiring.
• Mica: Mica film is a thin, layered material that is soft and lightweight. It offers outstanding thermal, mechanical, electrical, and chemical properties. It is also moisture-proof, flexible and has high tensile strength. Mica film is typically used in electronic and electrical applications.
• Mylar: Mylar film is a transparent multi-purpose material with excellent resistance to moisture and most chemicals. It is flexible, strong, and durable, making it suitable for a wide range of industrial applications, including laminating, office supplies, and electrical insulation.
• PEEK: PEEK is a high-performance thermoplastic that is strong, highly heat-resistant, and chemically stable. PEEK film is typically used in electronics (PCB films) injection moulding, laminating, and 3D printing.
• PET: PET (polyethylene terephthalate) is a polyester plastic film with high tensile strength. It is UV-resistant and has excellent electrical properties. PET plastic film is suited to a wide range of applications including printing and laminating.
• Polypropylene: Polypropylene, or PP film is a thin, low-cost thermoplastic clear film that is clear, tough, and strong, with excellent dielectric strength. Typical applications include shrinking wrap, packaging, and food packaging.
• Kapton: Kapton is a polyimide film used in printed circuits and space blankets for spacecraft, satellites, and other space instruments. It offers excellent stability across both high and low temperatures and is highly resistant to humidity, although it is not completely waterproof.

PVC vs. Mylar: Which Plastic Film Do You Need?

Understanding the performance differences helps ensure the right material choice.

• PVC Film: PVC film is preferred where flexibility, stretch, and surface protection are required. It performs well in packaging and protective coverings but is less dimensionally stable under heat.
• Mylar Film: Mylar film remains rigid and flat, even at higher temperatures. With strong solvent resistance and optical clarity, Mylar is ideal for insulation, overlays, and precision templates.

Understanding Microns and Thickness of Plastic Films

Film thickness, measured in microns (µm), affects flexibility, strength, and suitability across different plastic film materials, including PVC, PET, and polypropylene.

• 12–50 microns: Lightweight films for packaging, laminating, and thin film applications, including Mylar used for overlays and insulation
• 75–125 microns: Medium-gauge films offering improved rigidity, commonly used as Mylar sheets for drafting, stencils, and industrial templates
• 175–350+ microns: Heavy-duty films and clear Mylar sheets suited for electrical spacers, machinery guards, and structural insulation

Technical Properties of Engineering-Grade Films

Material properties determine long-term reliability in industrial environments.

• Thermal stability: Mylar remains flexible from –70 °C to 150 °C
• Chemical resistance: PVC films perform well in acidic settings, while Mylar excels with solvents
• Transparency: Clear Mylar film offers high optical clarity for display and overlay use

Handling and Cutting Mylar Plastic

Mylar is tear-resistant yet easy to die-cut or laser-cut for custom components. When unwinding clear Mylar film at speed, static electricity may build up, so grounding and controlled handling are recommended.

Industrial Applications of Plastic Film and Sheets

Plastic films support precision work across multiple industries.

• Electrical Insulation: Mylar’s dielectric strength makes it suitable for motor windings, transformer insulation, and slot liners.
• Graphics and Printing: Clear Mylar sheets are widely used for overlays, stencils, drafting, and screen printing.
• Engineering Prototypes: Mylar film is used as thermal barriers, gaskets, and spacers in prototype assemblies due to its high melting point.

Buy Plastic Film Online from RS

RS Australia is a trusted supplier and distributor of plastic film, offering a wide selection of Mylar and PVC films from established brands such as RS PRO and GoodFellow. Our range supports applications across electrical insulation, engineering, graphics, and general industrial use.

Alongside plastic films, RS also supplies complementary materials including plastic sheets, tapes, and adhesives — making it easy to source related components in one place. Order online through our user-friendly platform and receive reliable nationwide delivery across Australia. For full details on ordering and shipping options, please visit our delivery information page.