HDPE Blow Molding Grade Granules

HDPE Blow Molding Grade Granules are engineered polyethylene resins designed for manufacturing hollow plastic products through extrusion blow molding and related blow molding processes. The formulation is optimized to provide adequate melt strength, stiffness and resistance to deformation while allowing the polymer to form stable parisons during processing. Melt strength is particularly important because the extruded parison must maintain its shape before and during mold closing and inflation.

Depending on the intended product, manufacturers may select different molecular weight distributions and melt flow characteristics to balance processability with impact strength and wall thickness control. High-quality blow molding grades can provide consistent extrusion behavior, good surface appearance and reliable dimensional stability in mass production. Typical applications include HDPE bottles, detergent containers, chemical containers, lubricant bottles, jerry cans, household packaging and industrial hollow containers. The material is valued for its combination of rigidity, impact resistance, chemical resistance and low moisture absorption, making it suitable for packaging products containing detergents, cleaning agents and various industrial liquids. Blow molding manufacturers also benefit from HDPE’s relatively high stiffness, which allows containers to retain their shape during filling, stacking and transportation. Grade selection depends on container volume, wall thickness, extrusion equipment, cycle time, required drop resistance and the chemical compatibility of the finished container with its contents.

HDPE Blow Molding Grade Commercially is supplied as uniform polymer pellets suitable for automatic feeding systems used in industrial blow molding lines. Packaging generally consists of sealed polyethylene-lined bags or multi-layer polymer bags, with 25 kg bags widely used for standard commercial shipments and larger bulk packaging available for high-volume production. Proper packaging prevents dust, moisture and foreign particles from entering the resin during transportation and storage. For demanding applications, manufacturers should evaluate melt flow rate, density, impact performance, stiffness and processing stability using the supplier’s current technical documentation before selecting a grade.

Blow Molding HDPE PE Granule supply from Iran

Property	Typical Specification
Polymer Type	High Density Polyethylene (HDPE)
Processing Method	Blow Molding / Extrusion Blow Molding
Appearance	Natural or Colored Granules
Density	0.945–0.960 g/cm³
Melt Flow Index (MFI)	0.2–10 g/10 min*
MFI Test Condition	190°C / 2.16 kg or 21.6 kg, depending on grade
Tensile Strength	Typically 20–32 MPa
Elongation at Break	Typically ≥400%
Environmental Stress Crack Resistance (ESCR)	High / Grade-dependent
Impact Resistance	High
Melt Strength	High, suitable for stable parison formation
Main Applications	Bottles, jerry cans, drums, containers, tanks, IBCs and industrial packaging

Note: Technical values may vary depending on the specific HDPE grade.

IF YOU ARE WILLING TO BUY HDPE GRANULE FROM IRANIAN SUPPLIERS, PLEASE SCROLL DOWN AND SUBMIT YOUR REQUEST.

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FAQ HDPE Blow Molding Grade Granules

HDPE Blow Molding Grade is a high-density polyethylene resin specially designed for producing hollow plastic products through blow molding. It provides a good combination of stiffness, impact resistance, chemical resistance and melt strength.

Typical products include plastic bottles, detergent containers, shampoo bottles, jerry cans, drums, industrial containers, chemical packaging, water tanks and IBC containers.

The appropriate MFI depends on the product size and design. Lower-MFI grades are commonly used where high melt strength and parison stability are important, particularly for large containers and drums, while higher-MFI grades can be used for smaller bottles and containers.

Environmental Stress Crack Resistance (ESCR) is important because blow-molded containers may be exposed to detergents, chemicals, oils and other aggressive substances. High ESCR helps the finished container resist cracking and maintain long-term performance.

Some HDPE blow-molding grades are specifically approved for food-contact applications, but food-contact suitability must be confirmed for the exact grade through the manufacturer's compliance documentation.

Buyers can use Irancorps to find Iranian HDPE suppliers. Irancorps connects international buyers with Iranian suppliers and uses an internal supplier verification and KYC process to help buyers identify more reliable suppliers and compare available offers.