SABIC 318BJ is a butene linear low density polyethylene (LLDPE) resin designed specifically for cast film extrusion. This grade delivers excellent thermal stability at high processing temperatures and is formulated as TNPP-free (does not contain tris(nonylphenyl) phosphite), supporting enhanced safety and regulatory compliance.

Property

Typical Value

Test Method

Melt Flow Rate (190 °C / 2.16 kg)

2.8 g/10 min

ASTM D1238

Density

918 kg/m³ (0.918 g/cm³)

ASTM D1505

Melting Point (DSC)

121 °C

ASTM D3418

Vicat Softening Point

102 °C

ASTM D1525

Tensile Strength at Break

13 MPa

ASTM D882

Elongation at Break

710 %

ASTM D882

Tear Strength (TD)

140 kN/m

ASTM D1922

Dart Impact

2.6 kJ/m

ASTM D1709

Haze (30 µm film)

2.1 %

ASTM D1003

Gloss (30 µm film)

91 (at 45°)

ASTM D2457

Key Features and Advantages of SABIC 318BJ

  • Excellent Processability. LLDPE SABIC 318BJ is designed for stable operation in high-speed cast film extrusion lines, even at elevated melt temperatures.
  • Outstanding Optical Properties. Low haze and high gloss ensure superior transparency and clarity for premium packaging films.
  • Mechanical Robustness. High tear and impact resistance support demanding applications such as stretch and protective films.
  • Regulatory and Safety Benefits. TNPP-free formulation helps meet stringent environmental and safety requirements. Some grades may comply with food contact regulations (to be confirmed with supplier).
  • Reliable Quality. Produced by SABIC, a global leader in polyolefins, ensuring consistent quality, supply support, and technical service.

Main Applications

Sabic LLDPE 318BJ is ideally suited for producing high-quality, transparent cast films, particularly in flexible packaging applications, including:

  • Hand and pallet stretch films
  • Melt-embossed and protective films
  • General-purpose cast films
  • Food packaging films (subject to application-specific compliance)

Processing Recommendations

  • Extrusion Type: Optimal performance in cast film extrusion systems.
  • Typical Melt Temperature: 250 °C to 300 °C.
  • Chill Roll Temperature: Approx. 20 °C (varies by film thickness and performance requirements).
  • Storage Conditions: Store in a cool, dry place away from direct sunlight and high humidity; recommended to process within 6 months of delivery.
  • Regulatory Note: While suitable for certain food contact applications, this grade is not intended for medical devices or pharmaceutical use.

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