SABIC 518NJ LLDPE Resin

Physical Properties

• Density:  Determined by ASTM D1505 standards, the material’s density is measured as 0.918 grams per cubic centimeter (0.0332 lb/in³).
• Melt Flow: As per ASTM D1238, at a load of 2.16 kg (4.76 lb) and a temperature of 190 °C (374 °F), the melt flow rate is 0.50 g/10 min.

Polymer Properties:

• Base Material: Fractional melt – index butene linear low density polyethylene
• Modification Features:
  
  • TNPP – free, facilitating a clean production process.
  • Films possess high toughness and puncture resistance.
  • Films also exhibit good heat – sealing and machining properties.

Applications:

• Flexible Packaging Films: SABIC® LLDPE 518NJ is widely used in flexible packaging due to its excellent mechanical and optical properties. It is ideal for producing films for:
  • Shipping Sacks: The resin’s high tensile strength  and puncture resistance  ensure durability for heavy-duty sacks used in transporting goods like grains, fertilizers, or industrial materials.
  • Carrier Bags and Shopping Bags: The flexibility and tear resistance make it suitable for retail bags that require strength and reliability.
  • Garbage Bags: Its toughness and puncture resistance prevent tearing or puncturing under the stress of waste materials, making it a preferred choice for household and industrial waste bags.
  • Consumer Packaging: When blended with 10–20% LDPE, 518NJ produces high-clarity films suitable for food and non-food packaging, enhancing product visibility.
    Data Evidence: Films produced from 518NJ exhibit good hot-tack properties, ensuring strong seals in high-speed packaging lines. The resin’s MFR of 2.0 g/10 min supports efficient processing, reducing production downtime.
• Food Packaging: SABIC® LLDPE 518NJ is suitable for food contact applications, as confirmed by its compliance with relevant material safety datasheets. Typical uses include:
  • Ice Bags: The resin’s low-temperature toughness and impact strength ensure bags remain intact during freezing and handling.
  • Frozen Food Bags: Its flexibility and tensile strength maintain film integrity at sub-zero temperatures, protecting contents like frozen vegetables or meats.
  • Lamination and Coextruded Films: 518NJ is used in multilayer films for food packaging, where its hot-tack properties and thermal stability ensure reliable sealing and lamination with materials like aluminum or other polymers.
    Data Evidence: The resin’s compliance with food safety regulations and its ability to maintain mechanical properties at low temperatures make it a reliable choice for food-grade applications.
• Agricultural Films: SABIC® LLDPE 518NJ is used in agricultural applications such as:
  • Greenhouse Films: When blended with LDPE, the resin produces films with enhanced clarity (gloss of 80) and durability, suitable for covering greenhouses.
  • Mulch Films: The high tensile strength and puncture resistance protect against tearing caused by environmental factors like wind or machinery.
  • Silage Films: Its flexibility and toughness ensure airtight wrapping for preserving crops.
    Data Evidence: The resin’s Elmendorf tear strength (130–320 g) and elongation properties (700–750%) provide the durability needed for prolonged outdoor exposure in agricultural settings.
• Industrial Films: SABIC® LLDPE 518NJ is used in industrial applications requiring robust films:
  • Shrink Films: When blended with LDPE, 518NJ produces shrink films with good tensile strength and clarity, used for bundling products like beverages or construction materials.
  • Liners: Its puncture resistance and toughness make it suitable for liners in drums, crates, or bulk containers.
  • Industrial Consumer Packaging: The resin’s mechanical properties support films used in packaging industrial goods like chemicals or hardware.
    Data Evidence: The dart impact strength of 85 g and tensile strength of 11–12 MPa at yield ensure films can withstand heavy loads and rough handling.
• Blending with LDPE for Enhanced Properties: SABIC® LLDPE 518NJ is often blended with 10–20% LDPE to enhance optical properties (haze reduced to ~10%) and processability. This blend is used in applications requiring high clarity, such as:
  • High-Clarity Films: For retail packaging where product visibility is critical.
  • Coextruded Films: For multilayer structures combining clarity, strength, and sealability.
    Data Evidence: Blending with LDPE improves gloss (up to 85 at 60°) and reduces haze, as reported in technical datasheets.