CPP Transparent Film (Cast Polypropylene Film) is a high-performance packaging film produced by the cast extrusion process using polypropylene as the raw material. It features excellent transparency, good heat sealing properties, and strong impact resistance. This film provides outstanding moisture barrier performance and maintains good flexibility at low temperatures.
Our CPP Transparent Film has high clarity and gloss, with a haze value below 3%, providing excellent product display effects. The film offers excellent heat sealing properties with a low heat sealing initiation temperature (as low as 105°C), wide sealing temperature range, and high sealing strength, making it suitable for high-speed packaging applications.
With a thickness range from 15μm to 80μm, our CPP Transparent Film is widely used in food, textile, stationery, and industrial packaging. The film provides excellent printability and laminating properties, with surface corona treatment (both sides) offering excellent ink adhesion. It is also available in various special types such as easy-open, anti-fog, and anti-static versions to meet diverse packaging requirements.
CPP Transparent Film Technical Specifications
Our CPP Transparent Film meets strict quality standards and provides the following performance specifications:
| Property | Unit | Test Method | Typical Value |
|---|---|---|---|
| Thickness | μm | ASTM D374 | 15-80 |
| Thickness Tolerance | % | ASTM D374 | ±5 |
| Density | g/cm³ | ASTM D1505 | 0.90-0.91 |
| Haze | % | ASTM D1003 | ≤3.0 |
| Gloss (45°) | % | ASTM D2457 | ≥85 |
| Tensile Strength (MD) | MPa | ASTM D882 | ≥25 |
| Tensile Strength (TD) | MPa | ASTM D882 | ≥25 |
| Elongation at Break (MD) | % | ASTM D882 | ≥500 |
| Elongation at Break (TD) | % | ASTM D882 | ≥550 |
| Heat Sealing Initiation Temperature | °C | Internal Method | 105-115 |
| Heat Sealing Strength | N/15mm | Internal Method | ≥3.0 |
| Surface Tension (Treated Side) | mN/m | ASTM D2578 | ≥38 |
| Water Vapor Transmission Rate (38°C, 90% RH) | g/m²·24h | ASTM F1249 | ≤7.0 |
| Oxygen Transmission Rate (23°C, 0% RH) | cm³/m²·24h·atm | ASTM D3985 | ≤2000 |
| Coefficient of Friction (Film to Film) | - | ASTM D1894 | 0.30-0.40 |
Note: The above values are typical and should not be considered as specifications. Custom specifications are available upon request.
Processing Information
Printing
CPP Transparent Film can be printed using various printing methods including flexographic, gravure, and offset printing. The corona-treated surface provides excellent ink adhesion for high-quality printing results.
Lamination
Our CPP Transparent Film can be laminated with various substrates such as BOPP, BOPET, BOPA, and aluminum foil using solvent-based, solvent-free, or water-based adhesives to enhance barrier properties and mechanical performance.
Heat Sealing
With excellent heat sealing properties, our CPP Transparent Film can be sealed using various heat sealing equipment such as flat sealers, impulse sealers, and rotary sealers. The recommended heat sealing conditions are: temperature 115-145°C, pressure 0.3-0.6 MPa, dwell time 0.5-1.5 seconds.
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 12 months when stored correctly. For optimum processing performance, it is recommended to bring the film to room temperature before use.
CPP Transparent Film Applications
Our CPP Transparent Film, with its excellent transparency, heat sealing properties, and moisture barrier performance, is widely used in the following areas:
Food Packaging
Widely used for packaging bread, biscuits, snacks, dried foods, and fresh produce due to its excellent transparency, moisture barrier, and heat sealing properties.
Textile Packaging
Used for packaging garments, textiles, and fabrics, providing excellent protection against moisture and dust while allowing product visibility.
Stationery Packaging
Ideal for packaging notebooks, pens, paper products, and office supplies, providing good protection and product display effects.
Composite Packaging
Used as a heat-sealable layer in composite packaging structures, providing excellent sealing performance for various packaging applications.
Industrial Packaging
Used for packaging hardware, electronics, and industrial components, providing good protection against moisture and dust while allowing product inspection.
Medical Packaging
Used for packaging medical supplies and devices, providing good barrier properties and allowing visual inspection of the contents.
Product Advantages
- Excellent Transparency - Haze ≤3.0%, providing outstanding product display effects
- Superior Heat Sealing - Low heat sealing initiation temperature and high sealing strength
- Good Moisture Barrier - Effectively protects products from moisture
- Strong Impact Resistance - Provides good protection against physical damage
- Low-Temperature Flexibility - Maintains good flexibility at low temperatures
- Excellent Printability - Corona-treated surface provides excellent ink adhesion
- Good Processability - Compatible with various processing equipment and methods
- Food Safety - Complies with FDA and EU food contact regulations
