Unveiling the Impact of Different ingredient Ratios on Packaging Performance and Compliance Requirements
Comparative Analysis of Mainstream Transparent Stretch Film Materials
The material composition of transparent stretch film directly determines its elasticity, puncture resistance, and environmental properties. Below is a comparison of common material compositions in the U.S. market:
| Material Type | Main Composition | LDPE Content | LLDPE Content | Additives | Elasticity | Eco-Level |
|---|---|---|---|---|---|---|
| Standard Grade | LDPE+LLDPE | 60-70% | 30-40% | 0.5% Slip Agent | 250-350% | ★★★☆☆ |
| High Performance | LLDPE+mPE | 20-30% | 60-70% | 1% Anti-block | 400-500% | ★★★★☆ |
| Eco Grade | Bio-LLDPE+Recycled | 10-20% | 70-80% | Vitamin E Antioxidant | 300-400% | ★★★★★ |
| Nano-enhanced | LLDPE+Nano-CaCO3 | 15-25% | 65-75% | 3-5% Nanoparticles | 600-700% | ★★★★☆ |
Correlation Between Composition and Performance
LLDPE (Linear Low-Density Polyethylene) content directly affects the film’s elasticity and toughness. When LLDPE content increases from 40% to 70%, the film’s elongation at break improves by 150%-200%. Metallocene catalysts create more uniform molecular weight distribution, enhancing puncture resistance by 25%-30%.
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