HDPE Plastic Injection Molding
High-density resin used for past that require excellent durability and strong impact resistance
What is High-density Polyethylene (HDPE)?
High-density polyethylene (HDPE) is a resin found typically in pellet form, intended to be used in injection molding applications designed to withstand high impact, possess high-stress crack resistance, and have extreme durability. HDPE is also designed to provide excellent processability for molders.
What is HDPE Used For?
Applications using HDPE are highly sustainable due to the resin's extreme durability. High-density polyethylene's high strength-to-density composition and versatility make it an extremely popular plastic that serves the needs of a wide array of industries.
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Injection-Molded HDPE Material Properties
Density | Tensile Strength ASTM D638 | Elongation at Break ASTM D638 | Hardness (Shore D) ASTM D2240 | Heat Deflection ASTM D648 | |
|---|---|---|---|---|---|
| Unipol DMDA 8007 | 0.967 g/cm3 | 31.0 MPa | 350% | 61 | 83.9 C |
| Marlex 9006 HID | 0.953 g/cm3 | 28.0 MPa | 950% | 62 | n/a* |
| Dow DMDA 8907 | 0.952 g/cm3 | 27.0 MPa | 1,100% | 59 | 73.0 C |
*Resin has not been tested for this property
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Characteristics and Applications of Various HDPE Plastics
In general, HDPE provides excellent stiffness and is highly warp resistant. HDPE is typically lower in cost and has great chemical and impact resistance.
Marlex 9006
- High impact resistance
- Good stiffness, durable
- Food contact acceptable
- Highly sustainable
- Recyclable material
Applications: Industrial pails, automotive applications, and foamed parts
DOW DMDA-8007 NT 7
- Narrow molecular weight distribution
- Designed for excellent stiffness
- Low warpage
- Good toughness
Applications: Molded crates, cases, trays, tote bins, and other objects requiring high rigidity
DOW DMDA-8907 NT 7
- Designed for excellent processability to molders
- Superb impact strength
- Terrific environmental stress crack resistance
- Narrow molecular weight distribution
- Meets rigorous performance characteristics of applications requiring stackability
Applications: Industrial parts, and a variety of shipping containers
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