LLDPE Jilin Petrochemical DFDA‑7042
LLDPE Jilin Petrochemical DFDA‑7042 Resin
Material Introduction: LLDPE Jilin Petrochemical DFDA‑7042 is a widely‑used linear low‑density polyethylene. It is highly popular in film manufacturing field for favorable mechanical properties, excellent environmental‑stress‑crack‑resistance and relatively high transparency. Its pellets are non‑toxic, tasteless and odorless. Compared with LDPE, it features higher softening and melting temperature, high strength, good toughness and rigidity, favorable heat and cold resistance, outstanding environmental‑stress‑crack‑resistance, impact resistance and tear resistance, together with resistance to acid, alkali and organic solvents.
Main Applications
Packaging films: industrial packaging film, heavy‑duty bags, frozen‑food packaging bags, garbage bags.
Agricultural films: mulch films, greenhouse films.
Other applications: container liners and coating materials according to reference documents.
Performance Parameters
| Performance Category | Test Item | Test Method / Condition | Value & Unit | Remarks & Interpretation |
|---|---|---|---|---|
| Basic Properties | Density | GB/T 1033 | 0.917‑0.923 g/cm³ | Typical LLDPE density range. |
| Melt Flow Rate (MFR) | GB/T 3682 (190°C/2.16kg) | 1.5‑2.5 g/10min | Good melt flowability, suitable for blown‑film process. | |
| Mechanical Properties | Tensile Yield Strength | GB/T 1040 | ≥8.3 MPa | Indicator of tensile‑deformation resistance. |
| Tensile Strength at Break | GB/T 1040 | ≥12.0 MPa | Maximum stress the material can withstand before fracture. | |
| Elongation at Break | GB/T 1040 | ≥500 % | Good toughness and ductility, resistant to fracture under large‑deformation condition. | |
| Optical Properties | Haze | ‑ | ≤25 % (typical value) | Low‑haze performance delivers good transparency for packaging display requirements. |
| Film Appearance | Fish‑eye (0.8 mm) | ‑ | ≤2‑8 pcs/1520cm² (grade‑dependent) | Film quality indicator; lower value represents better uniformity and fewer impurities. |
| Fish‑eye (0.4 mm) | ‑ | ≤15‑40 pcs/1520cm² (grade‑dependent) | Same as above. | |
| Cleanliness | Contaminated Pellets | SH/T 1541 | ≤10‑40 pcs/kg (grade‑dependent) | Purity indicator; fewer particles mean higher material cleanliness. |
Blown‑Film Processing
General processing temperature range for LLDPE：150‑210 ℃.
Processing reference for DFDA‑7042: ‑ Barrel temperature: 130‑150 ℃ / 160‑180 ℃ (zone‑by‑zone heating) ‑ Die head temperature: 160‑170 ℃ ‑ Blow‑up ratio: 2‑4 ‑ Screw speed: 30‑50 r/min ‑ Extruder screw diameter: φ65 mm ‑ Screw L/D ratio: 28 ‑ Compression ratio: 3.5
Disclaimer: All above data is for reference only.
