PET Non-Corona Film is a specialized polyester film that has not undergone surface corona treatment, maintaining its natural surface characteristics. Unlike corona-treated films, our non-corona PET film preserves the inherent low surface energy of polyester, providing unique advantages for specific applications where controlled adhesion properties and specialized surface interactions are required.
This high-quality film features excellent dimensional stability, outstanding optical clarity, and superior mechanical properties characteristic of polyester films. The absence of corona treatment gives it a smoother surface with lower friction coefficient, making it particularly suitable for applications requiring controlled slip properties, release characteristics, and specialized converting processes.
Our PET Non-Corona Film is available in thicknesses ranging from 12μm to 125μm, with customizable properties to meet specific application requirements. The film can be produced with various additives and modifications to enhance specific performance characteristics while maintaining its non-corona surface properties. It is particularly valued in applications where consistent, low surface energy is critical to product performance.
PET Non-Corona Film Technical Specifications
Our PET Non-Corona Film is manufactured to meet stringent quality standards and offers the following technical specifications:
| Property | Unit | Test Method | Typical Value |
|---|---|---|---|
| Thickness | μm | ASTM D374 | 12-125 |
| Thickness Tolerance | % | ASTM D374 | ±2 |
| Density | g/cm³ | ASTM D1505 | 1.38-1.40 |
| Tensile Strength (MD) | MPa | ASTM D882 | ≥210 |
| Tensile Strength (TD) | MPa | ASTM D882 | ≥240 |
| Elongation at Break (MD) | % | ASTM D882 | ≥100 |
| Elongation at Break (TD) | % | ASTM D882 | ≥80 |
| Surface Tension | mN/m | ASTM D2578 | 30-34 |
| Haze | % | ASTM D1003 | ≤1.5 |
| Light Transmission | % | ASTM D1003 | ≥90 |
| Coefficient of Friction (Film to Film) | - | ASTM D1894 | 0.30-0.45 |
| Heat Shrinkage (150°C, 30min, MD) | % | ASTM D1204 | ≤1.5 |
| Heat Shrinkage (150°C, 30min, TD) | % | ASTM D1204 | ≤0.8 |
| Water Vapor Transmission Rate | g/m²·24h | ASTM F1249 | 15-20 |
| Oxygen Transmission Rate | cm³/m²·24h·atm | ASTM D3985 | 80-100 |
Note: The values listed above are typical and should not be considered as specifications. Custom specifications are available upon request.
Surface Characteristics
Surface Energy
The natural surface tension of non-corona treated PET film typically ranges from 30 to 34 mN/m, significantly lower than corona-treated films (typically 42-56 mN/m). This low surface energy provides controlled adhesion properties for specific applications.
Release Properties
The untreated surface provides natural release properties, making it suitable for applications where easy separation from adhesives and coatings is required. These properties can be further enhanced with specialized additives.
Processing Considerations
When using non-corona PET film in printing, coating, or laminating processes, specialized adhesion promoters or primers may be required if adhesion is desired. For release applications, the natural low surface energy is advantageous.
Storage and Handling
Store in a cool, dry place away from direct sunlight. Recommended conditions: temperature 15-25°C, relative humidity 45-65%. The shelf life is 24 months when stored correctly. Surface properties remain stable over time, unlike corona-treated films which may experience surface energy decay.
PET Non-Corona Film Applications
Our PET Non-Corona Film, with its controlled surface properties and excellent performance characteristics, is widely used in the following applications:
Release Liners
The natural low surface energy makes it ideal for release liner applications where controlled release from adhesives, silicones, and other sticky materials is required. Used in various label and adhesive tape manufacturing processes.
Specialized Packaging
Used in packaging applications where controlled slip properties are needed, such as high-speed packaging lines and automated handling systems. The low-friction surface helps prevent sticking and improves processing efficiency.
Electronic Applications
Used in various electronic components where controlled surface properties are critical. The absence of corona treatment reduces potential electrostatic issues in sensitive electronic applications.
Substrate for Specialized Coatings
Serves as an ideal substrate for specialty coatings where controlled adhesion is required. The untreated surface allows for precise control of coating adhesion in applications requiring specific surface interactions.
Thermal Transfer Printing
Used as a backing film for thermal transfer ribbons, where controlled release properties are essential for optimal ribbon performance and clean separation during the printing process.
Lamination Applications
Used in specialized lamination processes where controlled bond strength is required. The film can be selectively treated or coated to create areas with different adhesion properties.
Product Advantages
- Controlled Surface Energy - Natural low surface energy (30-34 mN/m) provides specific release and adhesion properties
- Stable Surface Properties - Unlike corona-treated films, surface characteristics remain stable over time
- Excellent Optical Properties - High clarity and low haze for applications requiring visual quality
- Superior Mechanical Strength - High tensile strength and durability characteristic of polyester films
- Chemical Resistance - Excellent resistance to many chemicals, solvents, and environmental factors
- Dimensional Stability - Excellent dimensional stability under various processing and use conditions
- Controlled Slip Properties - Lower coefficient of friction compared to corona-treated films
- Customizable Performance - Can be produced with various additives to enhance specific properties
