China OPP Heat Seal Film Suppliers - High-Quality Polypropylene Packaging from Reliable Factory
Product Parameter
| ITEM | UNIT | TYPICAL VALUES |
|---|---|---|
| Width | mm | Custom |
| Thickness | micron | Custom |
| Shrinkage | ％ | TD: ≤2.5 | MD: ≤4.5 |
| Shrink Temperature | ℃ | 100 – 135 |
| Proportion | g/cm³ | OPP: 0.91 | CPP: 0.96 |
| Tear Strength | ％ | TD: ≤80 | MD: ≤200 |
| Transverse Elongation at Break | MPa | TD: ≤200 | MD: ≤120 |
Product Applications
OPP packaging is commonly used in food, stationery, toys and other daily necessities. Its appearance is transparent and features excellent waterproof, moisture resistance, air tightness, and oil prevention characteristics. It plays an important role in ensuring product quality, preventing product pollution, and improving product appearance.
Frequently Asked Questions
Q
What is OPP heat seal film used for?
OPP heat seal film is widely used for packaging food products, stationery, toys, and various daily necessities. Its transparent appearance and strong barrier properties make it ideal for protecting products from moisture, air, and contaminants while enhancing shelf presentation.
Q
Can the width and thickness of the film be customized?
Yes. Both the width (in mm) and the thickness (in microns) of the OPP heat seal film are fully customizable to meet specific packaging requirements and production line specifications.
Q
What is the recommended shrink temperature for this film?
The recommended shrink temperature range for this heat seal film is 100°C to 135°C. Operating within this range ensures optimal shrinkage performance and sealing quality without damaging the film or the packaged product.
Q
What is the difference between OPP and CPP film in terms of density?
OPP (Oriented Polypropylene) film has a density of 0.91 g/cm³, making it lighter, while CPP (Cast Polypropylene) film has a slightly higher density of 0.96 g/cm³. The choice between them depends on the application's flexibility, clarity, and heat resistance requirements.
Q
Is this film suitable for food-grade packaging?
Yes. The OPP heat seal film is suitable for food-grade packaging applications. Its excellent oil resistance, moisture barrier, and airtight properties help preserve food freshness and prevent contamination throughout the supply chain.
Q
What are the shrinkage rate specifications for this film?
The shrinkage rate of this film is controlled at TD (Transverse Direction) ≤2.5% and MD (Machine Direction) ≤4.5%. These low shrinkage values ensure dimensional stability during packaging processes and help maintain the integrity of the final packaged product.