Linear Low-Density Polyethylene (LLDPE) is a thermoplastic polymer characterized by a linear backbone with short-chain branching, positioned between LDPE and HDPE in density and mechanical behavior. It is widely used in flexible films, tubing, and containers across packaging, agriculture, and consumer goods industries because its combination of toughness and elongation capability provides superior puncture resistance and flexibility compared to higher-density polyethylenes while maintaining good processability. Engineers select LLDPE when applications demand impact resistance, low-temperature flexibility, and stretch capability—making it the material of choice for stretch wrap films, agricultural mulch, squeezable bottles, and flexible tubing.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 238.3 | - | — | ||
Flexural Strength (MOR)(σf) | 38.65 | MPa | — | ||
Ultimate Tensile Strength(σUTS) | 20.03 | MPa | — | ||
Young's Modulus(E) | 179.6 | MPa | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Glass Transition Temperature(Tg) | 186.2 | K | — | ||
Melting Point / Solidus(Tm) | 396 | K | — | ||
Maximum Service Temperature(Tmax) | 708.1 | K | — | ||
Thermal Conductivity(k) | 0.8991 | W/(m·K) | — |
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Refractive Index(n) | 1.540 | - | — |