SINOPEC Zhenhai Refining & Chemical DFDA-7042 is a high-performance linear low-density polyethylene (LLDPE) film-grade resin. It offers exceptional tensile strength, puncture resistance, and balanced processing stability, making it an ideal choice for food packaging, agricultural films, and heavy-duty industrial logistics packaging.
| Manufacturer | ZRCC |
|---|---|
| Density | 0.918 g/cm³ |
| MFR | 2 g/10min |
| Tensile Strength at Yield | 10 MPa |
| Tensile Strength at Break | 16 MPa |
Note: See the product description for additional technical specifications
DFDA-7042 is a linear low-density polyethylene (LLDPE) resin independently produced by SINOPEC Zhenhai Refining & Chemical Company, belonging to the general-purpose film-blowing grade polyolefin raw materials. The product appears as milky white cylindrical plastic pellets, free of impurities and odors, with basic semi-transparent optical properties. The pellets are uniform and regular, suitable for standard film extrusion production lines. As one of the most widely used standard LLDPE grades in the domestic film industry, DFDA-7042 relies on its stable melt flow performance and balanced mechanical properties to become a mainstream base raw material for packaging film manufacturers. It is widely used in full-category film manufacturing scenarios such as food packaging, daily-use packaging, agricultural films, and industrial stretch films, making it a core selection for film processing manufacturers in the mass production of general-purpose packaging products.
| Physical Properties | Test Condition | Test Value | Test Standard |
| Density (Public Network) | — | 0.918 g/cm³ | GB/T 1033 |
| Melt Flow Rate (Public Network) | 230 °C, 2.16 kg | 2 g/10min | GB/T 3682 |
Note: Data not otherwise noted is sourced from the original version; “Public Network” indicates data sourced from public online resources.
| Mechanical Properties | Test Condition | Test Value | Test Standard |
| Tensile Strength, Yield (Public Network) | — | 10 MPa | GB/T 1040 |
| Tensile Strength, Break (Public Network) | — | 16 MPa | GB/T 1040 |
| Tensile Strain, Break (Public Network) | — | 780 % | GB/T 1040 |
Note: Data not otherwise noted is sourced from the original version; “Public Network” indicates data sourced from public online resources.
| Optical Properties | Test Condition | Test Value | Test Standard |
| Haze (Public Network) | — | 8 % | GB/T 2410 |
Note: Data not otherwise noted is sourced from the original version; “Public Network” indicates data sourced from public online resources.
The technical data sheet (TDS) of SINOPEC Zhenhai Refining & Chemical DFDA-7042 LLDPE material from SINOPEC corporation, if there are differences, please refer to the official website of SINOPEC.
Ultra-high elongation at break, with a tensile strain at break reaching 780%. Finished films possess excellent stretch resistance and tear resistance, are not easily damaged during handling and packaging, and are suitable for heavy-duty packaging scenarios.
Stable melt flow rate of 2g/10min, providing balanced flow for extrusion processing. Film blowing ensures uniform output, is not prone to production defects such as uneven film thickness or film breakage, and reduces production waste.
Balanced optical performance with a haze of only 8%. The resulting film has good light transmission, allowing for clear display of internal items, meeting the visual display requirements of retail packaging in supermarkets.
Basic chemical resistance to acids, alkalis, and daily chemical solvents. Can withstand erosion from common detergents and weak acids/alkalis, suitable for simple packaging of daily chemicals and industrial chemical raw materials.
The raw material pellets are pure without leachable additives, complying with basic standards for indirect food contact, and can be used for the production of fresh food, snack food, and other food outer packaging films.
A standardized, mass-produced domestic grade with a mature raw material supply system. Suitable for various high- and low-speed film blowing equipment, allowing for production startup without significant adjustments to equipment process parameters.
Used for supermarket fresh-keeping bags, food outer packaging bags, fresh fruit and vegetable wraps, and snack heat-sealing packaging films. Relying on the absence of harmful substance leaching and high toughness, it meets the requirements for food distribution packaging.
Used for basic greenhouse insulation films, agricultural soil covering mulch films, and fruit and vegetable wrapping films. The material has excellent stretch and elongation properties, is not easy to crack in outdoor use, and is suitable for agricultural outdoor environments.
Used for pallet stretch films, cargo bundling films, and rust-proof outer packaging films for hardware components. High tear resistance ensures complete protection of heavy cargo during long-distance transportation.
Used for garbage bags, disposable shopping bags, daily chemical and washing product outer packaging films, and stationery plastic packaging films, suitable for mass, low-cost production of daily-use packaging.
Can be co-extruded and modified with LDPE and HDPE as an inner layer substrate for multi-layer composite films, enhancing the overall toughness and heat-sealing performance of the composite film.
Q1: Is pre-drying required for DFDA-7042 before processing?
A1: This LLDPE raw material has extremely low hygroscopicity and does not require pre-drying in conventional storage environments. If the material is stored in a high-humidity warehouse for a long time and surface moisture condenses, it can be dried at 60-70°C for 1 hour to remove surface moisture before film blowing to avoid water marks or air bubbles on the film surface.
Q2: What is the core difference between DFDA-7042 and LDPE grades in film production, and how should I select them?
A2: The tensile and tear strength of DFDA-7042 linear low-density polyethylene are far superior to general-purpose LDPE, resulting in stronger film toughness and puncture resistance. The advantage of LDPE lies in higher film gloss and a wider heat-sealing temperature range. If the application focuses on packaging load-bearing and resistance to breakage, choose DFDA-7042; if seeking high-gloss films or lightweight, thin-gauge heat-sealable films, LDPE raw materials can be used.
Q3: Does DFDA-7042 comply with RoHS and food contact compliance standards, and can relevant reports be provided?
A3: The basic formulation of Zhenhai Refining & Chemical DFDA-7042 does not contain restricted substances such as heavy metals or halogens under RoHS, and meets the requirements of the national standard GB 4806 for food contact materials. After placing an order, you can apply for the original factory COA inspection sheet, RoHS test report, and full sets of food contact compliance certification documents from us, supporting source traceability for export customs and factory customer audits.
Q4: Can DFDA-7042 be processed by mixing with recycled LLDPE, and are there any restrictions on the mixing ratio?
A4: Virgin DFDA-7042 can be blended with clean, impurity-free recycled LLDPE for film blowing. For food packaging, it is recommended that the recycled material addition ratio does not exceed 15%; for industrial packaging, up to 30% recycled material can be mixed. Excessive mixing ratios will significantly reduce the tensile strength and light transmission of the film.
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