Sinopec LLDPE 7042 is a linear low density polyethylene resin produced through the copolymerization of ethylene with a small amount of alpha-olefins. The material features a well-controlled linear molecular structure with short-chain branching, delivering a balanced combination of strength, toughness, and processability.

Supplied in natural-colored pellets, the resin is non-toxic, odorless, and suitable for a wide range of film applications. It serves as a versatile and widely used material in packaging and agricultural film industries.

Property

Typical Value

Test Method

Density

0.918 – 0.922 g/cm³

ASTM D1505

Melt Flow Index (190°C/2.16 kg)

1.0 – 2.0 g/10 min

ASTM D1238

Tensile Strength

≥ 10 MPa

ASTM D638

Elongation at Break

≥ 500%

ASTM D638

Tear Strength

Excellent

ASTM D1922

Impact Strength

Excellent

ASTM D1709

Product Applications of LLDPE 7042

  • Packaging Films. This grade is widely used in stretch film and wrapping film applications, as well as heavy-duty packaging bags, garbage bags, and liner bags. It is also suitable for a broad range of industrial and consumer packaging films where strength, toughness, and reliable sealing performance are required.
  • Agricultural and Protective Films. The material performs well in agricultural films and various protective and covering film applications, offering good mechanical strength, durability, and resistance to environmental stress.
  • Laminated and Composite Structures. LLDPE 7042 is deal for multi-layer packaging films and serves effectively as a base layer in composite and coated film structures, supporting strong interlayer bonding and stable processing performance.

What are the core advantages of this product?

  • Excellent Mechanical Properties. LLDPE 7042 offers high tensile strength, outstanding elongation at break, and superior tear and puncture resistance, enabling the production of durable films with reduced thickness.
  • Outstanding Toughness and Impact Resistance. The resin maintains excellent impact strength even at low temperatures, making it ideal for packaging applications that require resistance to handling and transportation stress.
  • Good Environmental Stress Crack Resistance (ESCR). Its linear structure provides improved resistance to environmental stress cracking compared with conventional LDPE grades, ensuring longer service life of finished products.
  • Balanced Optical Performance. LLDPE Sinopec 7042 delivers good clarity and controlled haze, supporting both functional and visually appealing film products.
  • Stable and Efficient Processability. With a moderate melt flow rate, this grade ensures smooth extrusion, stable bubble formation during blown film processing, and consistent product quality.

Processing Recommendations

  • Processing Temperature: Typically 160°C – 220°C
  • Blown Film: Higher draw-down ratios are recommended to enhance film mechanical properties
  • Cooling Conditions: Proper cooling improves film clarity and surface quality
  • Additives: Slip agents, antiblock agents, and antioxidants may be added as required

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