HDPE 5502 is a high-density polyethylene blow molding grade resin produced by Sinopec Maoming Petrochemical Company using advanced polymerization technology. This material is specifically designed for extrusion blow molding applications and features a well-balanced molecular weight distribution, ensuring stable processing behavior and consistent product quality.

Sinopec 5502 offers an excellent balance of stiffness, impact resistance, and environmental stress crack resistance (ESCR), making it a versatile and reliable choice for a wide range of hollow container applications.

Property

Typical Value

Density

0.950 – 0.955 g/cm³

Melt Flow Rate (190°C/2.16 kg)

0.25 – 0.35 g/10 min

Tensile Yield Strength

≥ 24 – 27 MPa

Elongation at Break

≥ 600%

Flexural Modulus

900 – 1100 MPa

ESCR (F50)

35 – 50 h

What are the performance characteristics of HDPE 5502?

  • Excellent Blow Molding Processability. HDPE 5502 exhibits a moderate melt flow rate and high melt strength, allowing for stable parison formation during extrusion. This ensures uniform wall thickness, smooth surface finish, and high production efficiency in blow molding operations.
  • High Stiffness and Mechanical Strength. With relatively high density and tensile strength, this resin provides excellent rigidity and load-bearing capacity, making it suitable for containers that require stacking strength and durability during transportation.
  • Outstanding ESCR Performance. This HDPE material demonstrates excellent resistance to environmental stress cracking, particularly in the presence of detergents, surfactants, and chemicals, significantly extending product service life.
  • Superior Chemical Resistance. Sinopec HDPE 5502 offers excellent resistance to a wide range of chemicals, including acids, alkalis, and organic solvents, ensuring safety and stability in chemical packaging applications.
  • Good Weatherability. The resin maintains reliable mechanical performance across a broad temperature range and shows good resistance to environmental conditions, making it suitable for both indoor and outdoor use.
  • Excellent Electrical Insulation. Due to its low dielectric constant and high resistivity, Sinopec 5502 is also suitable for certain electrical and industrial insulation applications.

Primary Uses of HDPE Sinopec 5502

(1) Packaging Applications

HDPE 5502 is widely used in the production of detergent bottles, milk bottles and food containers, as well as cosmetic and personal care packaging, providing excellent rigidity, chemical resistance, and durability for everyday consumer products.

(2) Industrial Containers

This resin is also suitable for chemical containers, liquid storage tanks, and industrial packaging drums, offering reliable strength and environmental stress crack resistance for demanding industrial environments.

(3) Other Hollow Products

Beyond packaging, HDPE 5502 can be used to manufacture toys and large hollow items, automotive fuel tanks and components, and agricultural containers, where consistent performance, durability, and chemical resistance are critical.

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