LLDPE Formosa Plastics 3470
LLDPE Formosa Plastics 3470 Resin
Material Introduction: LLDPE Formosa Plastics 3470 is linear low‑density polyethylene. Featured with high flowability, favorable processability and excellent low‑temperature resistance, it is widely used for injection‑molded articles.
Main Applications
Household utensils & food containers: household basins, food packaging boxes, flexible caps for various applications such as bottle stoppers and container lids.
Thin‑wall products: high flowability makes it especially suitable for thin‑wall containers.
Other applications: automotive parts, home‑appliance components, lighting fixtures and wire‑cable materials.
Performance Parameters
| Performance Category | Test Item | Test Method / Condition | Value & Unit | Remarks & Interpretation |
|---|---|---|---|---|
| Basic Properties | Density | ASTM D‑1505 | 0.918‑0.926 g/cm³ | Typical LLDPE density range; data varies among different sources. |
| Melt Flow Rate (MFR) | ASTM D‑1238 (190°C/2.16 kg) | 1.0‑25 g/10min | High flowability, outstanding advantage for injection molding. Significant deviation from different sources; refer to factory test report or latest TDS for official value. | |
| Mechanical Properties | Tensile Yield Strength | ASTM D‑638 | 11.8 MPa or 117 kg/cm² | Unit conversion; strength meets general LLDPE level. |
| Elongation at Break | ASTM D‑638 | 350‑850 % | Good toughness and ductility, resistant to fracture under large deformation; large data deviation among sources. | |
| Hardness (Shore D) | ASTM D‑2240 | 48‑50 | Provides certain surface scratch‑resistance; slight difference among sources. | |
| Thermal Properties | Brittleness Temperature | ASTM D‑746 | ≤‑70.0 °C | Maintain toughness under ultra‑low temperature with excellent low‑temperature performance. |
| Vicat Softening Temperature | ASTM D‑1525 | 93.0‑95.0 °C | Heat‑resistance indicator; slight difference among sources. | |
| Melting Point | DSC / FPC method | 121‑124 °C | Complete melting temperature; slight deviation caused by different test methods. |
Injection‑Molding Process Parameters
| Process Parameters | Recommended Range | Remarks & Interpretation |
|---|---|---|
| Drying Treatment | Normally not required | LLDPE features extremely low moisture absorption (<0.01%). No drying needed under good storage. Dry at 60‑70 °C for 1‑2 hours as precaution if package damaged or under high‑humidity environment. |
| Melt Temperature | 170‑190 °C | Specific recommended range; general LLDPE window 160‑220 °C is also available. Start from lower temperature to avoid thermal degradation for this high‑flow grade. |
| Mold Temperature | 30‑60 °C | Mold temperature greatly affects crystallization state. Higher mold temperature brings higher crystallinity and strength, yet may increase shrinkage rate. |
| Injection Pressure | Medium pressure | Medium‑to‑low pressure is allowed due to high flowability. Excessive pressure causes flash; fine‑tune according to product structure and dimension. |
| Injection Speed | Medium‑high speed | Fast injection takes advantage of high flowability and improves production efficiency. |
| Holding Pressure | 40%‑60% of injection pressure | Avoid excessive holding pressure and long holding time to reduce internal stress. |
| Back Pressure | 0.5‑1.5 MPa | Low back pressure for melt compaction; excessive back pressure generates extra shear heat. |
| Screw Speed | Medium speed | Prevent excessive shear heat build‑up. |
Disclaimer: All above data is for reference only。
