POF heat shrink film is a multi-layer co-extruded polyolefin film known for its high transparency and high shrinkage ratio, which allows it to conform tightly to the contours of packaged items, forming a clear protective layer. Made from environmentally friendly and non-toxic polyolefin materials, it meets food contact safety standards and is suitable for packaging applications with strict hygiene requirements. The film exhibits good flexibility and puncture resistance, remaining intact during the shrinking process to effectively protect contents from impact and abrasion. With a broad shrinkage temperature range, it operates stably on various heat-sealing equipment and is widely used for external and multipack packaging, particularly for the precise protection and display of small or lightweight products.
Core Advantages
High Transparency & Gloss: Delivers near-invisible packaging that showcases product details.
High Shrinkage & Conformity: Shrinks evenly in both machine and transverse directions, tightly wrapping items with complex shapes.
Eco-Friendly & Safe: Chlorine-free (PVC-Free), emitting only water and carbon dioxide when incinerated. Complies with RoHS and FDA food-grade standards.
Durability & Strength: High tear resistance and retains flexibility in low-temperature environments.
Broad Processing Compatibility: Suitable for low-to-high-speed automatic packaging lines, with a wide heat-sealing window and stable performance.
Product Characteristics
Physical Properties: Thickness typically ranges from 12μm to 30μm (customizable). High tensile strength and puncture resistance.
Optical Properties: Light transmission up to 95% or higher, low haze, and excellent surface gloss.
Thermal Performance: Initial shrinkage temperature around 70°C, maximum shrinkage rate over 75%, with consistent seal strength.
Safety & Compliance: SGS-tested, free of phthalates and other harmful substances, suitable for direct food contact packaging.
Application Scenarios
Tableware & Daily Necessities Packaging: External packaging for disposable utensils, cleaning products, etc., providing dust protection and enhancing display.
Labels & Sleeves: Full-body shrink labels for bottles and cans, replacing adhesive labels.
Food Packaging: Multipack and fresh-keeping packaging for baked goods, biscuits, fruits, vegetables, and frozen foods.
Industrial Product Packaging: Multipack protection for small electronic components, toys, stationery, and gifts.
Printing Substrate: Suitable for surface printing, used in promotional or branded packaging.
Frequently Asked Questions & Solutions
Q: Why does the film appear cloudy or wrinkled after shrinking?
A: This is often due to excessive heat or uneven airflow. Adjust the temperature in the heat tunnel and ensure even heat distribution. Also, check whether the film tension during unwinding is appropriate.
Q: Why do corners tear easily when packaging heavier items?
A: Consider using a thicker gauge film (e.g., 25μm or above) and verify seal strength. Optimize the packaging angle and add edge cushioning if needed.
Q: Can it be used in freezing environments?
A: Yes. POF film remains flexible at low temperatures. However, it is recommended to complete the shrink-wrapping before freezing to avoid condensation affecting the fit.
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