Discover PetroChina Daqing HDPE 5000S, a high-density polyethylene resin featuring high tensile strength, superior ESCR, and excellent processability. Ideal for flat yarns, woven bags, ropes, and industrial packaging applications.
| Manufacturer | Daqing Petrochemical |
|---|---|
| MFR | 0.9 g/10 min |
| Density | 0.954 g/cm³ |
| Tensile Strength at Yield | 24 MPa |
| Elongation at Break | 500 % |
Note: See the product description for additional technical specifications
HDPE 5000S is a high-density polyethylene (HDPE) resin produced by PetroChina Daqing Petrochemical Company. The material appears as milky-white translucent cylindrical pellets and belongs to a narrow molecular weight distribution, medium melt flow index grade dedicated for blow molding and flat yarn. Its melt flow rate (MFR) is 0.9 g/10 min (internal method). 5000S is renowned in the HDPE product line for its excellent tensile strength (yield 24 MPa, break 30 MPa) and environmental stress crack resistance (ESCR 30 hr), alongside a high density of 0.954 g/cm³. Specifically designed for flat film flat yarn stretching, monofilament extrusion, and blow molding processes, this grade is widely applied in fields such as woven bags, flexible intermediate bulk containers (FIBC), ropes, nets, and industrial strapping tapes, serving as one of the long-standing benchmark grades in the Asian-Pacific woven packaging industry chain.
| Property | Test Value | Test Unit | Test Standard |
| Melt Flow Rate, Mass | 0.9 | g/10 min | Internal Method |
| Density | 0.954 | g/cm³ | Internal Method |
| Environmental Stress Crack Resistance (ESCR) | 30 | hr | Internal Method |
| Ash | 0.02 | % | Internal Method |
| Property | Test Value | Test Unit | Test Standard |
| Tensile Strength, Yield | 24 | MPa | Internal Method |
| Tensile Strength | 30 | MPa | Internal Method |
| Tensile Strain, Break | 500 | % | Internal Method |
The technical data sheet (TDS) of HDPE 5000S material from PetroChina Daqing Petrochemical corporation, if there are differences, please refer to the official website of PetroChina Daqing Petrochemical.
High Tensile Strength & Elongation at Break: Yield strength of 24 MPa, breaking strength of 30 MPa, and elongation at break of 500%. Monofilaments exhibit high strength after flat yarn stretching, providing woven products with outstanding tear and drop resistance.
Superior Environmental Stress Crack Resistance (ESCR): ESCR reaches 30 hr, resisting cracking under continuous stress and weak chemical media environments, making it suitable for long-term load-bearing packaging and rope/net products.
High Crystalline Density & Rigidity: Density of 0.954 g/cm³ with high crystallinity, ensuring good product stiffness, dimensional stability, and resistance to deformation during flat yarn weaving.
Narrow Molecular Weight Distribution & Stable Extrusion: An MFR of 0.9 g/10 min combined with narrow distribution characteristics results in minimal melt pressure fluctuations during extrusion and uniform die discharge, facilitating high-speed stretch film formation and slitting.
Low Ash & High Cleanliness: An ash content of only 0.02%, reducing spinneret carbon buildup and screen pack clogging, extending continuous production cycles, and lowering the frequency of shutdown cleaning.
Plastic Woven Packaging: Warp/weft flat yarns for woven bags such as cement bags, fertilizer bags, feed bags, and rice bags; main webbing and sling straps for flexible intermediate bulk containers (FIBC).
Ropes, Nets, & Monofilament Products: Fishing net threads, safety harness webbing, industrial binding ropes, horticultural tying ropes, and filter screen monofilaments.
Industrial Substrates & Sheets: Blow-molded containers, cooling tower packing sheets, and chemical storage tank liners (non-food grade applications require additive verification).
Composite Reinforcement Fabrics: Geotextile warp yarns compounded with PP or PET, anti-seepage membrane reinforcement layers, and container liner bag skeleton layers.
Q1: Does HDPE 5000S require drying prior to processing? What is the recommended process?
A1: HDPE has lower moisture absorption than PA or PC, but 5000S is predominantly utilized for high-speed flat yarn stretching, where trace moisture can form bubbles at the die head, leading to broken filaments or film pinholes. It is recommended to conduct hot-air drying at 80–90°C for 1–2 hours prior to processing, maintaining a moisture content below 0.1%. If the raw material packaging remains well-sealed and environmental humidity is below 60%, this step may be simplified accordingly; however, the initial mass production shift must inspect cast sheet surfaces and yarn breakage rates.
Q2: How should one choose between 5000S and common LDPE or LLDPE for woven flat yarn applications?
A2: 5000S (HDPE) features higher density, greater rigidity, and superior monofilament strength and stiffness post-stretching compared to LDPE/LLDPE, though it exhibits slightly lower toughness and weaker heat sealability. LDPE is flexible but lacks strength, while LLDPE offers similar strength but lower crystallinity and poor flat yarn stiffness. If end-use requirements demand high load-bearing capacity, puncture resistance, and stack stability for woven bags, select HDPE 5000S; if flexible packaging or heat-seal layers are required, co-extrusion with LLDPE/LDPE is necessary.
Q3: Does this grade comply with RoHS and food contact requirements? What documents can be provided?
A3: The HDPE 5000S base resin complies with RoHS and REACH restricted substance requirements, featuring extremely low ash content and a halogen-free stabilizer system. TDS, MSDS/SDS, and COA can be provided for each batch. If utilized for food contact packaging (such as rice bag liners), the inks, masterbatches, and post-treatment processes used in the end product must be verified, and corresponding food-grade compliance declarations (such as FDA 21 CFR 177.1520 or GB 4806.7 equivalent statements) should be requested, as the base resin itself does not directly equate to a food-grade finished product.
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