LLDPE 318BJ is a butene-based linear low-density polyethylene resin developed by Saudi Basic Industries Corporation (SABIC) for cast film extrusion. It combines processing stability with optical and mechanical properties suited to flexible film production.

With a typical density of 0.918 g/cm³ and a melt flow rate of 2.8 g/10 min, Sabic 318BJ is used in applications such as hand stretch film, pallet wrap, cling film, and embossed film. Its toughness, puncture resistance, and tear strength support film integrity during packaging, handling, and transportation.

Technical Data of LLDPE 318BJ

Property

Test Method

Typical Value

Density

ASTM D1505

918 kg/m³

Melt Flow Rate (190°C / 2.16 kg)

ASTM D1238

2.8 g/10 min

Film Stress at Break, MD

ASTM D882

28 MPa

Film Stress at Break, TD

ASTM D882

18 MPa

Film Elongation at Break, MD

ASTM D882

470%

Film Elongation at Break, TD

ASTM D882

600%

Haze

ASTM D1003

5%

Gloss at 60°

ASTM D2457

90

Dart Impact Strength

ASTM D1709

75 g

Puncture Resistance

SABIC Method

57 J/m

Tear Strength, MD

ASTM D1922

65 g

Tear Strength, TD

ASTM D1922

300 g

Vicat Softening Temperature

ASTM D1525

98°C

Main Applications of SABIC 318BJ

  • Hand Stretch Film. 318BJ can be used in hand-applied stretch film for wrapping cartons, bundles, and palletized goods. Its combination of toughness and tear resistance supports film integrity during manual wrapping and routine handling.
  • Pallet Stretch Wrap. For warehouse and logistics operations, stretch film helps secure goods on pallets and reduce load movement during transportation. Film manufacturers can adjust thickness and film structure according to load weight, wrapping equipment, and required stretch performance.
  • Cling Film. Manufacturers can use Sabic LLDPE 318BJ in suitable cast cling film formulations. They should assess cling performance, clarity, film thickness, and other end-use requirements. They must also verify compliance with applicable food-contact regulations before using the film for food packaging.
  • Embossed Film. Sabic 318BJ can also support the production of cast films with textured surfaces. Manufacturers can control embossing quality by adjusting the embossing roll, melt temperature, line speed, and other processing conditions.
  • General-Purpose Packaging Film. Other potential applications include flexible packaging films that require an appropriate balance of optical and mechanical properties. The grade should be selected according to the finished product’s performance targets and processing requirements.

Purchasing Considerations

SABIC 318BJ does not contain TNPP, which may be relevant to manufacturers with specific additive requirements. Before purchasing this grade, buyers should confirm the following details:

  • Grade and origin: Verify the product designation, manufacturing origin, and supply source.
  • Technical documentation: Request the latest TDS, COA, and relevant compliance documents.
  • End-use requirements: Specify whether the resin will be used for hand stretch film, pallet wrap, cling film, or another cast film application.
  • Quality parameters: Confirm density, melt flow rate, pellet appearance, and any customer-specific acceptance criteria.
  • Packaging and logistics: Clarify packaging format, order quantity, delivery terms, and shipping arrangements.
  • Regulatory compliance: For food packaging or other regulated applications, confirm suitability and documentation for the intended market.

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