Introduction
POF heat shrink film is an eco-friendly packaging material widely used in foreign trade packaging. It is commonly applied for gift boxes, daily necessities, food, printed materials and small pallet goods. Many buyers confuse standard POF shrink film with low-temperature cross-linked POF shrink film. Both are based on POF raw material, but differ in cross-linking technology, applicable equipment, shrinking temperature and final packaging effect. Shenzhen World Packing gives you a detailed comparison.
1. Core Process Differences of POF Shrink Film
- Standard POF Shrink Film Produced by multi-layer co-extrusion non-crosslinking technology. Without cross-linking treatment on molecular structure, the film has regular toughness and requires higher temperature to complete shrinking.
- Low-Temperature Cross-linked POF Shrink Film Cross-linking process is added during co-extrusion production to form a network molecular structure. After cross-linking, the film toughness is greatly improved, and heat shrinkage can be finished at lower temperature, which gives this product its name.
2. Key Parameter Comparison for Two Types of POF Film
| Items | Standard POF Shrink Film | Low-Temperature Cross-linked POF Film |
|---|---|---|
| Shrinking Temperature | High: 120℃~160℃ | Low: 80℃~120℃ |
| Toughness / Tear Resistance | Normal, easy to break under high temperature | Excellent puncture & tear resistance, less cracking after shrinking |
| Applicable Products | High-temperature resistant goods: plastic parts, cartons, books | Heat-sensitive goods: color boxes, printed matters, cosmetic boxes, thin paper boxes |
| Price | Cost-effective, lower price | Higher production cost, more expensive |
3. Pros & Cons
Standard POF Shrink Film
✅ Advantages: High cost performance, suitable for mass packaging of heat-resistant goods, sufficient market supply.
❌ Disadvantages: Requires high temperature. Insufficient oven temperature leads to loose shrinkage. Thin gauge film tears easily at edges; heat-sensitive items may deform under high heat.
Low-Temperature Cross-linked POF Shrink Film
✅ Advantages: Low-temperature shrinking to protect heat-sensitive products. Strong tear & puncture resistance, less edge burst. Glossy finish for premium packaging. Stable performance even with fluctuating oven temperature, lower defect rate.
❌ Disadvantages: Higher unit price. It increases packaging cost for products that can withstand high temperature.
4. Selection Guide for Buyers
- Choose standard POF shrink film if your goods can resist high temperature and you want to cut packaging cost. Ideal for cartons and hard plastic products.
- Choose low-temperature cross-linked POF film for heat-sensitive, easily deformed goods or high-standard packaging with strict requirement on surface appearance and no edge cracking. Typical uses: color gift boxes, cosmetic boxes, paper cultural & creative products, thin cartons.
- Low-temperature cross-linked POF film is recommended for old shrink tunnels with unstable temperature, to reduce reject rate.
5. Summary
In short, both are eco-friendly POF heat shrink films. Low-temperature cross-linked POF is an upgraded version. Standard POF focuses on economy, while cross-linked POF features low shrink temperature, superior toughness and premium packaging appearance, at a higher price.
Shenzhen World Packing supplies various sizes of POF shrink film and low-temperature cross-linked POF film, customized widths available.
