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SHOBEIR SHIMI CO.LTD
SHOBEIR SHIMI CO.LTD
EPS 321HS

EPS 321HS

  • GRADE: 321HS
  • Bead Size: 0.7-1.0 mm
  • Pentane Content: 5.2% wt%
  • K-Value: 55
  • Expanded Density: 18-30 kg/m3
  • Packaging: 55*25 Kg shrink-wrapped wooden pallets
  • HS Code: 39031190
  • PRODUCER: Tabriz Petrochemical Company
Category:

Description

HS321 is an advanced expandable polystyrene (EPS) product developed for high-strength structural applications where mechanical integrity is paramount. This free-flowing EPS grade consists of spherical polystyrene beads containing pentane as the expansion agent, engineered specifically to achieve optimal low-density foam formation without compromising structural integrity. The material exhibits exceptional performance characteristics in shape molding applications, particularly in contexts requiring superior impact absorption and cushioning properties within a minimized mass framework.

  • Optimized Density Profile: Achieves remarkably low density properties (typically around 22 kg/m³) while maintaining structural cohesion
  • Enhanced Expandability: Formulated specifically for superior expansion characteristics without lump formation during pre-expansion
  • Consistent Bead Morphology: Uniform 0.7-1mm spherical beads (>90% by weight) ensuring processing consistency
  • Controlled Pentane Content: Minimum 5.2% pentane content precisely calibrated for optimal expansion properties
  • Antistatic Treatment: Integrated antistatic agents preventing electrostatic charge accumulation during material transport and handling
  • Defined K-Value Range: 52-57 K-value specification ensuring predictable processing behavior
  • Closed-Cell Architecture: Engineered cellular structure optimized for energy absorption through controlled deformation

HS321 demonstrates superior performance in the following application domains:

  • Protective Packaging Systems: Specializes in contour moldings with minimum wall thickness requirements of 10mm
  • Impact-Resistant Enclosures: Functions as shock absorbers and cushioning components for sensitive contents
  • Energy Absorption Structures: Engineered for applications requiring controlled deformation under impact loads
  • Multi-Impact Protection: Maintains performance integrity through its closed-cell structure that absorbs energy through deformation work
  • Low-Temperature Environments: Performs consistently without becoming friable or hygroscopic in cold conditions

  • Enhanced Mechanical Resilience: Achieves high mechanical strength even at low densities, providing superior protection characteristics
  • Processing Versatility: Compatible with standard industry molding equipment across a wide range of steaming parameters
  • Structural Integrity: Maintains dimensional stability and performance characteristics in challenging environments
  • Impact Energy Management: Absorbs impact forces through controlled compression of enclosed air and strategic deformation of cell walls
  • Manufacturing Efficiency: Achieves low-density outputs without production complications such as agglomeration or inconsistent expansion
  • Performance Predictability: Consistent material properties enabling reliable end-product performance characteristics

  • Protective Packaging Manufacturers: Companies specializing in cushioning solutions for sensitive equipment and products
  • Industrial Component Fabricators: Manufacturers requiring lightweight yet robust structural elements
  • Transportation Packaging Specialists: Logistics operations requiring reliable impact protection for transported goods
  • Custom Molding Operations: Fabricators specializing in complex geometric moldings requiring consistent material performance
  • Cold Chain Logistics: Operations requiring packaging materials that maintain integrity in low-temperature environments

  • Pre-expansion Density: Optimally processes to approximately 22 kg/m³
  • Intermediate Aging Period: 10-48 hours for optimal material stabilization
  • Storage Temperature: Below 20°C for maintained material properties
  • Processing Window: Within 1 month of material receipt for optimal performance
  • Molding Compatibility: Standard industry molding equipment with flexible steaming parameters

  • Primary Containment: Octabins (non-weather/water-proof)
  • Container Dimensions: Height 176 cm
  • Pallet Configuration: Wooden pallets measuring 115 cm × 115 cm
  • Net Content Weight: 1000 kg per octabin
  • Storage Requirements: Indoor storage below 20°C in dry conditions
  • Handling Notes: Material is treated with antistatic agents, but containers are not weatherproof and require protected storage conditions

Property Unit Test Method Specification Range Typical Value
K-Value – SUNPOR 7.2.4 52-57 55
Bead Size mm SUNPOR 7.2.5 0.7-1 (>90% by weight) 0.7-1 (>90% by weight)
Pentane Content wt% SUNPOR 7.2.2 Min 5.2% 5.2%
Residual Monomer ppm SUNPOR 7.2.1 Max 1000 500
Moisture Content wt% SUNPOR 7.2.3 Max 1% –
Expanded Density kg/m³ SUNPOR 7.2.6 – 18-30

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Established in 2004, Shobeir Shimi Company is a leading distributor of raw materials for polymer, chemical, and paint. Our extensive product range includes standard polymers, engineering plastics, compounds, and masterbatches.

 

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