Linear Low-Density Polyethylene (LLDPE) is a polyethylene variant produced by copolymerizing ethylene with alpha-olefins such as butene, hexene, or octene. Unlike LDPE, LLDPE has a linear structure with short chain branches, offering improved tensile strength and higher impact resistance. It maintains good flexibility and clarity, making it suitable for film applications. LLDPE softens at elevated temperatures and should not be exposed to temperatures above 85–95°C during end use.
Technical Characteristics
| Molecular formula | (C₂H₄)ₙ |
| Density (gr/cm3) | 0.915 – 0.925 |
| Melting point | 120°C |
| Melt flow index at 190°C and 2.16 kg load | 0.5 – 20 (gr/10min) depending on grade |
| Tensile strength | 10 – 25 (MPa) |
| Vicat softening temperature | ~95°C |
| Appearance | Translucent, flexible, with good clarity |
Applications
- Stretch and shrink films
- Agricultural and greenhouse films
- Food and industrial packaging
- Liners and bags
- Cable coverings
- Injection molding products
- Flexible tubing
Environmental Impact of LLDPE
LLDPE, like other polyethylenes, is not biodegradable and contributes to plastic pollution if not managed properly. While it is recyclable (category #4), thin film applications often complicate collection and recycling. Efforts to improve recycling infrastructure and promote the use of eco-friendly alternatives are key to reducing LLDPE’s environmental impact.
Safety Measures and Regulations for Handling LLDPE
LLDPE is considered safe for contact with food and general consumer use. During thermal processing, adequate ventilation is necessary to prevent exposure to fumes. Use of PPE and adherence to safety standards (OSHA, EPA, FDA) ensures safe operation and handling throughout production and application.
Packing
25 kg bags
| LLDPE | |
| LL 235 F6 | FILM |
| LL 0209 AA/KJ | |
| LL 22B01 AA | |
| LL 22B02 AA | |
| LL 22B03 AA | |
| LL 18B03 | |
| LL 0220 AA/KJ | |