Blue and white HDPE cartons for detergents, cleaning supplies, and other household products

What is HDPE?

High-density polyethylene a type of thermoplastic polymer characterized by its high strength-to-density ratio. HDPE is one of the most widely used plastics in the world. It is a member of the polyethylene family of plastics, which also includes low-density polyethylene (LDPE) and linear low-density polyethylene (LLDPE).

Characteristics and Properties

  • High Density: As the name suggests, HDPE has a higher density compared to LDPE. This results in greater strength, stiffness, and resistance to impact.
  • Chemical Resistance: HDPE is highly resistant to chemicals, making it suitable for applications where contact with corrosive substances is a concern. It is commonly used for chemical storage tanks and pipelines.
  • Low Moisture Absorption: HDPE has low moisture absorption, which makes it ideal for outdoor applications and products that need to resist moisture, such as water pipes and outdoor furniture.
  • Excellent Durability: HDPE is known for its durability and resistance to wear and tear. It is often used in products like plastic lumber, playground equipment, and road barriers.
  • Food Safe: HDPE is considered food-safe, and it is used for food packaging, food containers, and cutting boards.
  • UV Resistant: HDPE has good resistance to ultraviolet (UV) radiation, making it suitable for outdoor applications that are exposed to sunlight, such as water tanks and agricultural equipment.
  • Recyclability: Like LDPE, HDPE is recyclable, and it is commonly collected in recycling programs to reduce environmental impact.


  • Pipe and Duct Systems: HDPE pipes are widely used for water and gas distribution, as well as in the construction of underground utilities like drainage and sewer systems.
  • Bottle Caps and Containers: HDPE is used for making bottle caps and containers for a variety of products, including beverages, household cleaners, and personal care items.
  • Geomembranes: HDPE geomembranes are used in civil engineering applications for lining landfills, ponds, and reservoirs to prevent seepage and contamination.
  • Rotational Molding: HDPE is a common material for rotational molding, used to create large, hollow objects like tanks, containers, and playground equipment.
  • Industrial and Agricultural Equipment: HDPE is used in the manufacturing of parts and components for industrial machinery and agricultural equipment due to its strength and durability.
  • Automotive Parts: Some automotive components, such as fuel tanks, bumpers, and interior trim, are made from HDPE.

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