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Marlex® 9018 High-Density Polyethylene (HDPE)

boy plays with toys

Marlex® 9018 high-density polyethylene (HDPE) is an injection molding grade designed to deliver durability, toughness and consistent performance across a broad range of consumer and industrial applications. It offers a balanced combination of stiffness, impact resistance and chemical durability, making it well suited for food pails, tamper‑evident closures, small containers, toys and household products.

Engineered for dependable performance in high‑volume molding environments, Marlex® 9018 PE supports consistent part quality and dimensional stability where products are subject to repeated handling, stacking and daily use. Its balanced mechanical profile allows manufacturers to meet both structural and aesthetic requirements across diverse end uses.

Produced using CPChem’s proprietary MarTECH® loop slurry process and advanced catalyst technologies, Marlex® HDPE resins provide uniform molecular structure, efficient processing and dependable performance across injection molding platforms.

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Properties 

PropertyTypical ValueTest Method
Melt Index (190°C/2.16 kg)20.0 g/10 minASTM D1238
Density0.952 g/cm3ASTM D1505
Flexural Modulus (Tangent)175,000 psiASTM D790
Tensile Strength at Yield3,900 psiASTM D638

Key Characteristics of Marlex® 9018 HDPE 

  • Good flow 
  • Good impact strength 
  • Good stiffness 
  • Durability 

 

These HDPE resin properties make Marlex® 9018 PE a versatile choice for manufacturers producing rigid polyethylene components for consumer, packaging and household applications.

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HDPE Resin for Injection Molding

HDPE resins are engineered for both rigid and flexible processing methods. Marlex® 9018 PE is optimized for rigid injection molding applications.

Rigid Applications

Non-exhaustive list of applications:

  • Food pails (2‑ and 5‑gallon)
  • Automotive applications
  • Toys
  • Tamper‑evident caps for milk bottles
  • Small containers used for building compounds
  • Housewares

 

These applications benefit from Marlex® 9018 PE’s ability to retain structural integrity, resist cracking and deliver consistent molded performance across production runs and end use.

Contact our polyethylene specialists for processing support

Why Choose CPChem as Your HDPE Supplier

Proven Polyethylene Leadership

A leading HDPE producer since the 1950s with deep polymer science expertise

Broad Polyethylene Portfolio

Broad HDPE portfolio spanning multiple processing technologies and performance ranges

R&D and Technical Service

World-class R&D and technical service teams supporting application development

Reliable Global Supply

Reliable global supply from ISO 9001–certified manufacturing facilities

Commitment to Sustainability

Commitment to innovation and sustainability, including Marlex® Anew Circular Polyethylene