What Is Polyester PET Film Material?

Polyester PET film (Polyethylene Terephthalate film) is a high-performance polymer material produced through biaxial stretching and heat-setting processes. PET film offers superior physical and chemical properties, making it a widely used industrial material across multiple sectors.

Key Characteristics of PET Film

• High tensile strength and tear resistance
• Excellent dimensional stability
• High temperature resistance
• Superior chemical and moisture resistance
• Outstanding optical clarity (in transparent grades)
• Low shrinkage and minimal deformation
• Excellent electrical insulation properties
• Easy to print, laminate, and metallize
• Food-safe grades available

DERFLEX offers PET film in various finishes including clear, matte, glossy, milky white, metallized, anti-static, UV-resistant, heat-sealable, and embossed types.

Features and Advantages of DERFLEX Polyester PET Film

1. Outstanding Mechanical Strength

Polyester PET film has significantly higher tensile strength than most plastic films. Its robust structure allows use in demanding environments such as electronics, battery insulation, and industrial lamination.

2. Excellent Optical Transparency

Clear PET film provides crystal clarity with light transmittance up to 90%, making it preferred for protective films, displays, printing, and packaging windows.

3. High Temperature Resistance

PET film maintains performance under temperatures from -70°C to +150°C, making it suitable for thermal lamination, electrical insulation, and automotive applications.

4. Superior Chemical Resistance

PET is naturally resistant to oils, solvents, mild acids, and bases—ideal for industrial and laboratory environments.

5. Dimensional Stability

Its biaxially oriented structure ensures minimal shrinkage and exceptional stability during processing and high-speed printing.

6. Electrical Insulation

PET film offers high dielectric strength, widely used in transformers, insulating tapes, motor insulation, and lithium battery packs.

7. Eco-Friendly and Recyclable

PET is fully recyclable and complies with global environmental standards like RoHS, REACH, and FDA for food-safe grades.

8. Highly Customizable

• Thickness: 6μm – 350μm
• Width: 250mm – 2500mm
• Surface finish: clear, matte, embossed, milky, metallized
• Treatments: anti-fog, anti-static, UV-blocking, heat-sealable

Polyester PET Film Material Specifications

Main Applications of Polyester PET Film

1. Packaging Industry

• Food-grade packaging
• Cosmetic packaging
• Vacuum packaging
• Blister packaging
• Flexible laminates

2. Electronics & Electrical Applications

• Insulation for motors and transformers
• Lithium battery insulation
• Electrical tape
• Printed electronics
• EMI shielding materials

3. Printing & Graphics

• Digital printing and UV printing substrates
• Labels and stickers
• Display films
• Overlays and ID card lamination

4. Industrial Applications

• Release liners
• Membrane switches
• Solar film
• Industrial laminations
• Protective films

5. Automotive Applications

• Dashboard overlays
• Head-up display protective layers
• Heat insulation film

DERFLEX – Professional PET Film Manufacturer & Global Supplier

DERFLEX has been producing high-performance PET films for more than 20 years. Our production facilities include advanced biaxial stretching lines, coating lines, and precision slitting systems.

As a global PET film supplier, we provide stable long-term supply capacity to customers in:

• USA and Canada
• Europe
• Middle East
• South America
• Asia-Pacific

Factory Strength

• 20+ years manufacturing experience
• Multiple PET film production lines
• Strict quality inspection systems
• OEM/ODM customization services
• High monthly output for stable supply

Certifications of DERFLEX PET Film

• ISO9001 Quality Management System
• RoHS Compliance
• REACH Certification
• FDA Food-Grade Certifications (optional)
• SGS Testing Reports

Why Choose DERFLEX Polyester PET Film?

1. High-Quality Raw Materials

All PET materials are sourced from reliable suppliers with stable quality assurance.

2. Advanced Manufacturing Technology

Our biaxial stretching and heat-set processes ensure dimensional stability and high mechanical strength.

3. Strict Quality Control

Each roll of PET film undergoes optical, mechanical, thermal, and thickness uniformity inspection.

4. Custom Specifications

Thickness, width, transparency, coatings, and performance can be fully customized.

5. Competitive Factory Price

Direct production ensures strong cost advantages for wholesalers and distributors.

Processing, Handling & Storage Guide

Cutting and Slitting

Precision slitting machines ensure tight roll tolerances and clean edges suitable for lamination or printing.

Printing Compatibility

• UV printing
• Offset printing
• Flexographic printing
• Screen printing

Lamination

PET film is widely used in thermal and cold lamination applications for cards, labels, packaging, and protective layers.

Storage Recommendations

• Store in dry, ventilated environments
• Avoid direct sunlight
• Temperature: 10–30°C
• Humidity: 40–70%

FAQ – Polyester PET Film Material

1. What thickness of PET film do you provide?

Our PET film ranges from 6μm to 350μm with full customization options.

2. Do you offer food-grade PET film?

Yes. FDA-compliant food-grade PET is available upon request.

3. Can PET film be used for electrical insulation?

Absolutely. PET film offers excellent dielectric strength and is widely used in transformers, motors, and batteries.

4. Do you provide free samples?

Yes, DERFLEX offers free samples for testing and evaluation.

5. Is PET film environmentally friendly?

PET film is recyclable and fully compliant with RoHS & REACH environmental standards.