Sorry, you need to enable JavaScript to visit this website.
Skip to main content

Marlex® 9118 Medium-Density Polyethylene (MDPE)

Multicolored Crates

Marlex® 9118 medium-density polyethylene (MDPE) is an injection molding grade engineered for applications that demand excellent cold‑temperature impact strength, balanced stiffness, and good processing flow. Its mechanical profile provides toughness and flexibility at low temperatures, making it well suited for molded containers, totes and carts used in demanding handling and storage environments.

Leveraging decades of polyethylene manufacturing expertise, CPChem produces Marlex® MDPE resins using advanced catalyst systems and rigorous process controls. This approach delivers consistent molecular structure and dependable resin quality, enabling predictable processing behavior and reliable part performance across injection molding operations.

Connect with our PE product experts 

Properties 

PropertyTypical ValueTest Method
Melt Index (190°C/2.16 kg)18.0 g/10 minASTM D1238
Density0.933 g/cm3ASTM D1505
Impact Strength (High Speed, Total Energy)21 ft·lbfASTM D3763
Flexural Modulus (1% Secant)99,000 psiASTM D790
Tensile Strength at Yield2,400 psiASTM D638

Key Characteristics of Marlex® 9118 MDPE 

  • Excellent cold temperature impact strength 
  • Moderate stiffness 
  • Good flow 

 

These MDPE resin properties make Marlex® 9118 PE a dependable choice for injection molded products requiring impact resistance, dimensional stability and consistent manufacturing performance.

Contact our technical service team for processing recommendations

MDPE Resin for Injection Molding

MDPE resins are engineered to bridge the performance gap between HDPE strength and LLDPE flexibility. Marlex® 9118 MDPE is optimized for rigid injection molding applications.

Rigid Applications

Non-exhaustive list of applications:

  • Containers
  • Totes
  • Carts

 

These applications benefit from Marlex® 9118 MDPE’s ability to maintain toughness and impact resistance at low temperatures while delivering reliable processing and molded part integrity.

Contact our polyethylene specialists for processing support

Why Choose CPChem as Your MDPE Supplier

Leading Polyethylene Producer

Leading polyethylene producer with decades of polymer science expertise

Proprietary MarTECH® Process

Advanced catalyst and process technologies for tailored MDPE performance

R&D and Technical Service

Dedicated R&D and technical service teams supporting injection molding applications

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