HDPE SECCO HD5502FA
HDPE SECCO HD5502FA
HDPE SECCO HD5502FA is a high‑density polyethylene mainly for blow molding. It is widely used for manufacturing small hollow containers due to good processability, excellent surface finish and balanced mechanical properties.
Main Applications
Small Hollow Containers: Developed for blow‑molded articles below 5 L, such as containers for food, oil and general‑purpose chemicals. Other Applications: Refrigerator compartments, storage containers, household kitchenware, sealing caps, etc.
Property Data
| Property Category | Test Item | Test Method / Condition | Value / Unit | Remarks & Interpretation |
|---|---|---|---|---|
| Basic Properties | Density | ISO 1183 | 0.953 or 0.955 g/cm³ | HDPE grade with high hardness and good rigidity. Data may vary among sources; refer to the latest TDS. |
| Melt Flow Rate (MFR) | ISO 1133 (190 °C / 10 kg) | 5.0 or 10.0 g/10min | High‑load MFR shows good melt flow, well‑suited for blow molding. Data may vary among sources; refer to the latest TDS. | |
| Mechanical Properties | Tensile Yield Strength | ISO 527‑2 | 26 MPa | Resistance to tensile deformation. |
| Elongation at Break | ISO 527‑2 | 450% or 600% | Good toughness and ductility; resistant to fracture under large deformation. Values may differ by source. | |
| Flexural Modulus | ISO 178 | 1200 MPa | Stiffness indicator; higher value means better resistance to bending deformation. | |
| Charpy Un‑notched Impact Strength | ISO 179/1eU | 8.5 kJ/m² | Impact resistance performance. | |
| Environmental Stress‑Cracking Resistance (ESCR) | ASTM D‑1693 | 50 hr | Resistance to stress cracking under specified environment; higher is preferred, critical for chemical‑holding containers. |
Blow‑Molding Processing Reference
For blow‑molding, temperature, pressure and other parameters shall be adjusted and optimized according to equipment, container volume and performance requirements.
- Processing Temperature: Typical blow‑molding temperature range for HDPE: 160‑220 °C. Fine‑tune per equipment, mold and product requirements.
- Screw Design: Suitable for multi‑station extruders for higher output.
- Mold Temperature: Affects surface finish and crystallinity; maintain proper cooling temperature.
- Processing Notes:
- Melt strength: HD5502FA features moderate MFR (5.0 g/10min, 190 °C/10 kg) and favorable melt strength to maintain parison shape during blow‑molding.
- Surface finish: Contains PPA processing aid to improve processability and surface quality, reduce melt fracture and enhance surface gloss.
- Shrinkage & warpage: HDPE has relatively high directional shrinkage, prone to warpage. Control mold temperature and ensure uniform, stable cooling.
Injection Molding Parameters
| Process Parameter | Recommended Range (HDPE) | Remarks & Interpretation |
|---|---|---|
| Drying | Generally not required | No drying needed under proper storage conditions. |
| Melt Temperature | 200‑260 °C or 180‑250 °C | For higher‑molecular‑weight grades, 200‑250 °C is preferred. |
| Mold Temperature | 50‑95 °C | Higher mold temperature for wall thickness below 6 mm; lower mold temperature for wall thickness above 6 mm. Uniform cooling minimizes shrinkage variation. |
| Injection Pressure | 700‑1050 bar | |
| Injection Speed | High‑speed injection recommended | |
| Runners & Gates | Runner diameter: 4‑7.5 mm Keep runner length as short as possible. Various gate types are acceptable; gate length ≤ 0.75 mm. Hot‑runner molds are highly applicable. |
Note: All data above is for reference only!
