LDPE LG Chem MB9500
LDPE LG Chem MB9500 Resin
Material Introduction: LDPE LG Chem MB9500 is low‑density polyethylene featuring high flowability, good softness, excellent transparency and outstanding low‑temperature resistance. It is mainly processed by injection molding, also applicable for blow molding and extrusion.
Main Applications
Household articles: plastic storage boxes, food packaging bags, sealing parts.
Coating application: especially for powder coating.
Artificial flowers & artificial turf.
Food containers: non‑toxic and eco‑friendly, compliant with FDA and EU food‑contact regulations, suitable for food‑contact containers and packaging.
Other applications: toys, home supplies, packaging for disposable medical articles.
Performance Parameters
| Performance Category | Test Item | Test Condition | Test Standard | Test Data | Unit | Remarks & Interpretation |
|---|---|---|---|---|---|---|
| Basic Properties | Density | 23°C | ASTM D‑1505 | 0.915‑0.916 | g/cm³ | Typical LDPE density range with light weight. |
| Melt Flow Rate (MFR) | 190°C/2.16 kg | ASTM D‑1238 | 48‑50 | g/10 min | Ultra‑high flowability, suitable for thin‑wall injection‑molded products. | |
| Mechanical Properties | Tensile Yield Strength | ‑ | ASTM D‑638 | 8.0 (80) | MPa (kg/cm²) | Yield strength of resin. |
| Tensile Breaking Strength | ‑ | ASTM D‑638 | 9.0 (90) | MPa (kg/cm²) | Breaking tensile strength. | |
| Elongation at Break | ‑ | ASTM D‑638 | ＞400‑450 | % | Good toughness and ductility. | |
| Shore Hardness (Shore D) | ‑ | ASTM D‑2240 | 42 | ‑ | Surface hardness index. | |
| Thermal Properties | Vicat Softening Temperature | ‑ | ASTM D‑1525 | 74‑77 | °C | Heat‑resistance reference index. |
| Brittle Temperature | ‑ | ASTM D‑746 | ＜‑45 | °C | Excellent low‑temperature toughness. | |
| Melting Temperature | DSC | ‑ | 104 | °C | Resin melting peak temperature. |
Injection‑Molding Process Parameters
Processing method: Injection molding(main), blow molding, extrusion.
- Melt temperature：＜220 ℃ / around 220 ℃. Relatively low processing temperature due to high MFR and LDPE material property.
- Mold temperature：20‑50 ℃. Lower mold temperature shortens molding cycle, adjust according to product structure and requirements.
- Injection pressure：Medium‑low pressure for its excellent flowability; actual value depends on part shape, wall thickness and mold design.
- Injection speed：Medium‑high speed for fast cavity filling.
- Back pressure：5‑10 bar for melt homogenization, excessive back pressure is not allowed.
- Screw speed：Moderate rotation speed, avoid material degradation caused by excessive shear heat.
- Drying treatment：Pre‑drying is normally unnecessary. Dry at 60‑70 ℃ for 1‑2 h under humid storage environment.
Disclaimer: All above data is for reference only.
