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What is Polyolefin (POF) shrink film and How It Work in Food Packaging?
Polyolefin (POF) Shrink film is a high-clarity, durable, and eco-friendly packaging material designed to shrink tightly around products when heated. It is widely used for food and retail products due to its, FDA-approved, non-toxic, and flexible nature. Common types include 5-layer and cross-linked, offering strong, puncture-resistant, and cost-effective, high-speed wrapping.
Key Characteristics and Benefits,Superior Clarity: Provides a glossy, transparent appearance for enhanced shelf appeal.
Durability: High puncture resistance ensures protection for irregularly shaped items.
Versatile Shrinking: Offers 80% or higher shrinkage in both directions, fitting tightly like a second skin.
Eco-Friendly: Recyclable and does not emit harmful odors (no Chloride) during heating, unlike PVC.
Common Applications
Food Packaging: Produce, bakery, meat, and candy items.
Consumer Goods: Toys, games, electronics, and cosmetics.
Industrial/Retail: Books, stationery, and bottled products.
Technical Specifications
Operating Temp: Best performance between 160–220°C (320–430°F).
Thickness: Available in various gauges, with thinner options often used for efficiency.
Compatibility: Suitable for manual, semi-automatic, and automatic machines.
Varieties: Centerfold, single-wound, and pre-perforated options are available.
POF is frequently used to replace PVC, offering a more versatile and environmentally responsible, cost-effective packaging solution.
thickness: 12micron, 15micron, 19micron, 25micron and 30 micron.
Polyolefin film has excellent shrink properties.
Tough centre fold film for use in most shrink machines.
User friendly recyclable product with a very low odour.
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| Model | Type | 10um | 12um | 15um | 19um | 25um | 30um |
| 40gauge | 50gauge | 60gauge | 75gauge | 100gauge | 120gauge | ||
| Tensile strength(MD) | N/mm² | 115 | 110 | 105 | 105 | 93 | 83 |
| Tensile strength(TD) | N/mm² | 110 | 105 | 100 | 100/td> | 90 | 78 |
| Elongation(MD) | mm | 115 | 110 | 115 | 115 | 125 | 125 |
| Elongation(TD) | mm | 110 | 105 | 110 | 110 | 120 | 120 |
| Tear MD | g | 10.5 | 10.5 | 14.5 | 17.5 | 23.5 | 25.5 |
| Tear TD | g | 10.0 | 10.0 | 13.5 | 16.0 | 23.0 | 24.0 |
| Seal strength(MD) | N/mm | 0.65 | 0.62 | 0.75 | 1.01 | 1.23 | 1.25 |
| Seal strength(TD) | N/mm | 0.68 | 0.65 | 0.75 | 1.04 | 1.28 | 1.35 |
| Film to Film(Dynamic) | N/mm | 0.23 | 0.23 | 0.22 | 0.22 | 0.25 | 0.25 |
| Film to Film(Static) | N/mm | 0.24 | 0.24 | 0.23 | 0.24 | 0.26 | 0.26 |
| Haze optics | % | 2.2 | 2.2 | 2.6 | 3.2 | 3.9 | 4.5 |
| Clarity | % | 98.5 | 95.5 | 95.5 | 95.5 | 93.5 | 90.0 |
| Gloss @ 45 Deg | % | 85.5 | 83.5 | 85.5 | 82.5 | 80.5 | 79.5 |
| Oxygen Transmission Rate | cc/m²/day | 11300 | 11100 | 10600 | 7000 | 5200 | 4300 |
| Water Vapor Transmission Rate | gm/m²/day | 45.5 | 45.5 | 38.5 | 26.5 | 22.5 | 20.5 |
| Free Shringage(100°C) | % | 22/25 | 21/24 | 30/33 | 19/21 | 27/31 | 31/34 |
| Free Shringage(110°C) | % | 38/41 | 37/50 | 44/47 | 33/35 | 44/47 | 53/56 |
| Free Shringage(120°C) | % | 54/57 | 55/58 | 56/59 | 58/60 | 58/61 | 59/62 |
| Free Shringage(130°C) | % | 65/68 | 64/67 | 65/68 | 63/65 | 64/67 | 65/68 |
| Shrink Tension(100°C) | Mpa | 1.80/2.55 | 1.80/2.55 | 1.80/2.55 | 1.70/2.45 | 1.70/2.45 | 1.70/2.45 |
| Shrink Tension(110°C) | Mpa | 2.70/3.40 | 2.70/3.40 | 2.70/3.40 | 2.60/3.55 | 2.60/3.55 | 2.60/3.55 |
| Shrink Tension(120°C) | Mpa | 2.80/3.60 | 2.80/3.60 | 2.80/3.60 | 2.80/3.50 | 2.80/3.50 | 2.80/3.50 |
| Shrink Tension(130°C) | Mpa | 2.60/3.10 | 2.60/3.10 | 2.60/3.01 | 2.60/2.98 | 2.60/2.98 | 2.60/2.98 |