Introduction for SABIC LLDPE 318BJ

2024-10-24
SABIC 318BJ LLDPE

1. SABIC 318WJ LLDPE introduction

318BJ is a butene (C-4) copolymer linear low-density polyethylene resin (LLDPE material) produced by Saudi Basic Industries Corporation (SABIC). It offers excellent tensile strength, puncture resistance, superior optical properties, and high-temperature resistance, making it commonly used in the production of films for non-medical applications.
Sabic 318BJ LLDPE material has a melt flow index (MFI or MVR) of 3g/10min under the ASTM D1238 test standard at 190°C and 2.16kg load. It is therefore designated as 318BJ LLDPE.
If you require SABIC 318BJ LLDPE material, please contact us.

2. Differences Between SABIC 318BJ and Other LLDPE Grades

  • Enhanced high-temperature resistance, offering superior performance compared to other LLDPEs in the same class. SABIC 318BJ exhibits a Vicat softening temperature of 102°C, surpassing both SABIC 218WJ LLDPE (98°C) and SABIC 218BJ LLDPE (96°C). This makes it suitable for high-temperature applications or processing environments, such as cast film production and food applications requiring high-temperature sterilization.
  • Specifically for film production,SABIC 318BJ LLDPE is specifically engineered for film production, offering excellent tensile properties and puncture resistance. It achieves a tensile strain at break of 710%, a dart impact rating of 2.6 kJ/m, and a protrusion puncture resistance of 2.0 J.
  • Food-grade cling film is permissible. Sabic 318BJ LLDPE material is free from tri(nonylphenyl) phosphite (TNPP) antioxidants and is suitable for producing LLDPE films in regions with stringent standards such as the EU. This material may also be used for manufacturing food contact films, including cling film.

3. Applications of SABIC 318BJ

Sabic 318BJ LLDPE is particularly suitable for producing hand-stretched and machine-stretched films, food preservation films, printed films, and other general-purpose applications due to its excellent high-temperature resistance, tensile properties, and processability.

4. Technical data sheet (TDS) of Sabic 318BJ LLDPE

Properties  Typical values  Units  Test methods
Melt flow rate at 190℃ and 2.16kg  2.8 dg/min ASTM D1238
Density 918 kg/m³ ASTM D1505
Mechanical properties Typical values  Units  Test methods
Tensile stress at break  13 MPa ASTM D1638
Tensile strain at yield 16 % ASTM D1638
Tensile stress at yield 12 MPa ASTM D1638
Tensile strain at break 710 % ASTM D1638
Flexural secant modulus at 1% elongation  251 MPa ASTM D790
Hardness shore D 48 MPa
Optical properties Typical values  Units  Test methods
Gloss (45°) 91 ‰ ASTM D2457
Haze 2.1 % ASTM D1003
Film properties Typical values  Units  Test methods
Dart impact  2.6 kJ/m ISO 7765-2
Tear strength TD 140 kN/m ISO 6383-2
Protrusion puncture resistance 2.0 J ASTM D5478-95
Elastic recovery  51.9 % ASTM D5459-95
Stress retention 78.1 % ASTM D5459-95
Thermal properties Typical values  Units  Test methods
Vicat softening temperature at 10 N 102 ℃ ISO 306
Melting point at DSC test 121 ℃ Sabic method
Electrical properties Typical values  Units  Test methods
Volume resistivity 8.5E15 Ohm.cm ASTM D257
Dissipation factor at 60Hz 5.0E-4 ASTM D150
Dielectric constant at 60Hz 2.2 ASTM D150
Dielectric strength at 2000 V/sec ＞30 V/μm ASTM D150
⚠️The data sheet of Sabic 318BJ linear low density polyethylene resin (LLDPE material) from Saudi basic industrial, if there are differences, please refer to the official website of Sabic.

Why LLDPE 7042 has become the main raw material for stretch film

Introduction for LLDPE Lotrène Q2018N