LLDPE Formosa Plastics 3224
LLDPE Formosa Plastics 3224 Resin
Material Introduction: LLDPE Formosa Plastics 3224 is linear low‑density polyethylene. Favored for excellent heat‑sealing property, good extensibility and processability, it is mainly used for blown‑film products.
Main Applications
Various packaging bags: shopping bags, light‑medium‑duty packaging bags, ultra‑thin films, stretch wrap films.
Other film products: industrial packaging films requiring high toughness and tear resistance.
Performance Parameters
| Performance Category | Test Item | Test Method / Condition | Value & Unit | Remarks & Interpretation |
|---|---|---|---|---|
| Basic Properties | Density | ASTM D‑1505 | 0.920 g/cm³ | Typical density range for LLDPE. |
| Melt Flow Rate (MFR) | ASTM D‑1238 (190°C/2.16 kg) | 2.0 g/10min | Good melt flowability, suitable for film processing. | |
| Mechanical Properties | Dart Drop Impact Strength | ASTM D‑1709 | 120 g | Indicator of puncture‑resistance and impact‑resistance. |
| Tear Strength (MD) | ASTM D‑1922 | 40 g/25µm | Machine‑direction tear resistance of film. | |
| Tear Strength (TD) | ASTM D‑1922 | 430 g/25µm | Transverse‑direction tear resistance, much higher than MD direction. | |
| Tensile Strength at Break (MD) | ASTM D‑882B | 360 Kg/cm² | Machine‑direction tensile capacity of film. | |
| Tensile Strength at Break (TD) | ASTM D‑882B | 280 Kg/cm² | Transverse‑direction tensile capacity of film. | |
| Elongation at Break (MD) | ASTM D‑882B | 600 % | Machine‑direction ductility of film. | |
| Elongation at Break (TD) | ASTM D‑882B | 800 % | Transverse‑direction ductility, superior to MD direction. | |
| Thermal Properties | Brittleness Temperature | ASTM D‑746 | ＜‑70 °C | Retain toughness under ultra‑low temperature with excellent low‑temperature performance. |
| Melting Point | DSC | 122 °C | Complete melting temperature of material. | |
| Vicat Softening Point | ASTM D‑1525 | 93 °C | Heat‑resistance indicator. | |
| Optical Properties | Haze | ASTM D‑1003 | 22 % | Transparency indicator; lower value represents higher transparency. |
| Gloss (45°) | ASTM D‑2457 | 52 % | Surface‑gloss indicator of film. | |
| Other Features | Anti‑block Agent | ‑ | Medium | Facilitate separation between film layers. |
| Slip Agent | ‑ | Medium | Improve processability and surface slip property. |
Blown‑Film Processing
For mainstream blown‑film extrusion, temperature, pressure and other parameters shall be optimized according to equipment, film thickness and performance requirements.
‑ Processing Temperature: General LLDPE blown‑film temperature range 150‑210 ℃. Fine‑tune according to MFR (2.0 g/10min for this grade) and actual equipment. ‑ Screw Design: LLDPE features low shear sensitivity and maintains higher viscosity under shear, slightly harder to process than LDPE of identical MFR. Slightly higher melt temperature and pressure for extruder are required. ‑ Bubble Stability: LLDPE blown‑film bubble stability is inferior to LDPE. Dual‑lip air ring is recommended to improve cooling and bubble stability. ‑ Blending for better processability: Many film producers blend LLDPE with LDPE (e.g. 50 % each) to optimize processability and raise output capacity.
Disclaimer: All above data is for reference only.
