LyondellBasell HDPE M5040
- Product Name: LyondellBasell HDPE M5040
- Factroy Site: Yudu County, Ganzhou, Jiangxi, China
- Price Inquiry: admin@ascent-chem.com
- Manufacturer: Ascent Petrochem Holdings Co., Limited
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- LyondellBasell HDPE M5040 is typically used in formulations when melt flow rate and density and processing temperature and mold temperature must be controlled within specific ranges.
| HS Code | 118937 |
| Density | 0.950 g/cm³ |
| Melt Flow Rate 190 C 2 16 Kg | 0.35 g/10 min |
| Tensile Modulus | 1100 MPa |
| Tensile Stress At Yield | 26 MPa |
| Tensile Strain At Yield | 9% |
| Tensile Strain At Break | >600% |
| Flexural Modulus | 1200 MPa |
| Charpy Notched Impact Strength 23 C | 20 kJ/m² |
| Charpy Notched Impact Strength 30 C | 8 kJ/m² |
| Vicat Softening Temperature | 128 °C |
| Heat Deflection Temperature 0 45 Mpa | 75 °C |
| Melting Temperature | 132 °C |
| Shore D Hardness | 64 |
| Environmental Stress Crack Resistance | >1000 h |
| Water Absorption | <0.01% |
| Volume Resistivity | >1E14 ohm·cm |
| Dielectric Constant | 2.3 |
| Thermal Conductivity | 0.35 W/m·K |
| Coefficient Of Linear Thermal Expansion | 1.2E-4 /°C |
| Brittleness Temperature | < -70 °C |
As an accredited LyondellBasell HDPE M5040 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | LyondellBasell HDPE M5040 is packaged in 25 kg polyethylene bags, palletized, or 1,000 kg jumbo bags for bulk shipment. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with LyondellBasell HDPE M5040 polyethylene resin, 25 kg bags palletized, shrink-wrapped, and secured for ocean transport. |
| Shipping | LyondellBasell HDPE M5040 is shipped as non-hazardous high-density polyethylene resin pellets in 25 kg bags, 1,000 kg bulk bags, or bulk trucks/railcars. Store in cool, dry conditions away from direct sunlight, moisture, and incompatible materials. Follow standard industrial handling and local transport regulations. No special hazardous shipping labels required. |
| Storage | Store LyondellBasell HDPE M5040 in original, closed packaging in a cool, dry, well-ventilated area. Protect from direct sunlight, moisture, excessive heat, and contamination. Keep away from ignition sources and strong oxidizing agents. Use palletized, stable stacks and follow first-in, first-out rotation. Avoid puncturing bags; prevent dust generation and static buildup. Store at moderate temperatures. |
| Shelf Life | LyondellBasell HDPE M5040 typically has a 24-month shelf life when stored unopened in a cool, dry place. |
In thin-wall dairy cup production running on high-speed stack moulds, LyondellBasell HDPE M5040 is metered at melt temperatures of 200 °C to 230 °C and injected through valve-gated hot runner systems into cavities with nominal wall sections from 0.35 mm to 0.65 mm. The nominal melt mass-flow rate of 40 g/10 min at 190 °C/2.16 kg under ISO 1133-1:2022 reduces pressure drop across the runner, while the density of 0.953 g/cm³ under ISO 1183-1:2019 contributes top-load rigidity to shallow tubs. Food-contact compliance for monolayer structures is assessed under FDA 21 CFR 177.1520(c) and Commission Regulation (EU) No 10/2011, with overall migration limited to 10 mg/dm² under EN 1186-1 total immersion conditions. Formulation addition is normally kept between 97.0 wt% and 99.5 wt% virgin M5040, combined with 0.5 wt% to 1.0 wt% erucamide/antiblock masterbatch and up to 2.0 wt% titanium dioxide white masterbatch. Masterbatch loadings above 2.5 wt% have been observed on 48-cavity stack tools to raise peak injection pressure by approximately 10% to 15% and increase gate-freeze time variability. The downstream moulding sequence uses a clamp force of 3,500 kN, injection speeds of 200 mm/s to 300 mm/s, and holding pressure of 35 MPa to 55 MPa; mould coolant is maintained at 8 °C to 15 °C to achieve demoulding rigidity without condensation. Terminal parts are single-serve yoghurt cups, dairy dessert cups, and portion packs for fruit preparations in multi-pack dairy formats.
What Processing Window Prevents Gate Wedging in Multicavity HDPE Closure Tools?
For injection-compression moulded beverage closures with tamper-evident bands, mould cavity fill is completed in 0.25 s to 0.40 s, after which compression stroke of 1.0 mm to 2.0 mm redistributes the melt into the undercut band region. M5040 is processed at melt temperatures of 220 °C to 240 °C and hot runner manifold temperatures of 215 °C to 230 °C to prevent nozzle-tip freeze-off; when manifold setpoint falls below 200 °C, the resulting premature solidification at the gate creates wedging and stringing faults on 64-cavity needle-shutoff tools. Compliance for the closure shell draws on FDA 21 CFR 177.1520(c), Regulation (EC) No 1935/2004 Article 3, and Commission Regulation (EU) No 10/2011 for specific migration of added slip masterbatch components. Formulation addition is held at 98.0 wt% to 100.0 wt% virgin M5040, with 0.5 wt% to 1.5 wt% erucamide slip masterbatch to control cap removal torque; post-consumer HDPE regrind is limited to 20 wt% in food-contact closure shells only where the recyclate is authorized under Commission Regulation (EU) 2022/1616. The downstream process uses injection-compression or high-speed injection moulding with 64 cavities, holding pressure of 45 MPa to 60 MPa, and demoulding after 6 s to 9 s for a 0.9 mm to 1.2 mm shell wall. Feed throat temperature is held below 50 °C; batch-to-batch pellet geometry variability in high-melt-flow HDPE has been observed to shift screw fill degree by 2% to 5%, requiring cushion control of 4 mm to 6 mm to prevent short shots in tamper-evident band fold zones. Terminal finished products are 28 mm short-height screw closures for aseptic dairy beverages, 26 mm snap-on overcaps for powder nutrition cans, and tamper-evident band closures for isotonic drink bottles.
| Application scenario | Primary compliance standards | Formulation addition ratio | Operational boundary |
|---|---|---|---|
| Thin-wall dairy cups | FDA 21 CFR 177.1520(c), EU 10/2011, EN 1186-1 | 97.0–99.5 wt% M5040; 0.5–1.0 wt% slip/antiblock; ≤2.0 wt% TiO₂ | Masterbatch >2.5 wt% raises peak injection pressure 10–15% |
| Closures and overcaps | FDA 21 CFR 177.1520(c), EC 1935/2004, EU 10/2011, EU 2022/1616 | 98.0–100.0 wt% M5040; 0.5–1.5 wt% slip; ≤20 wt% authorized PCR | Hot runner manifold must remain above 200 °C |
| Industrial pails | UN Model Regulations Chapter 6.1, 1H2 | 100.0 wt% M5040; 0.5 wt% HALS; 2.0 wt% carbon black | Restricted to non-aggressive fill goods; published ESCR data limited |
| Freezer storage boxes | FDA 21 CFR 177.1520(c), EC 1935/2004, ISO 179-1 | 97.0–100.0 wt% M5040; 0.5–1.0 wt% antistat; 1.0–3.0 wt% colour | Avoid plasticizer-bearing colour carriers |
Because skin cream jars and loose-powder sifter bases are moulded with polished S136 tool steel inserts to achieve low residual stress in visible side walls, M5040 is run at melt temperatures of 210 °C to 225 °C rather than upper-range temperatures, limiting yellowing of pearlescent masterbatches and reducing gate blush. Cosmetic packaging in the EU must satisfy Regulation (EC) No 1223/2009 for packaging migration into cosmetic formulations, while general chemical restrictions derive from REACH Annex XVII; dimensional and appearance acceptance follows ISO 20457:2018 for plastics moulded parts tolerances. Formulation addition is 96.0 wt% to 99.0 wt% M5040, 1.0 wt% to 2.0 wt% pearlescent or mineral filler masterbatch, and 0.2 wt% to 0.5 wt% phenolic antioxidant masterbatch. Filler loadings above 2.0 wt% reduce notched Charpy impact below 2.0 kJ/m² at 23 °C in ISO 179-1/1eA, producing chipped rims in package drop tests. The downstream process uses single-stage injection moulding with 1.5 mm to 2.5 mm nominal side walls, filling time of 0.6 s to 1.2 s, pack/hold pressure of 30 MPa to 45 MPa, and cooling of 8 s to 14 s. Gate vestige control on valve pins requires thermal separation of the tip below 190 °C to avoid stringing. Terminal output comprises 50 mL cream jars, airless pump sleeve housings, and compact powder pan bases.
Pail Wall Thickness Control at 3.0 mm Nominal Section and UN Type H2 Requirements
Industrial pail conversion with M5040 is constrained by the high melt mass-flow rate of 40 g/10 min, which favours filling thin ribs and handle attachment zones but reduces environmental stress-cracking resistance compared with bimodal HDPE pipe resin. When cylindrical open-top pails are produced at nominal wall thickness of 3.0 mm, the primary process risk is sink-mark formation at the handle lugs and bottom chimes; packing pressure of 40 MPa to 60 MPa is maintained until gate seal, and decompression before sprue break is kept below 4 mm to avoid microvoids. For non-food or water-based paint pails, formulation addition is 100.0 wt% M5040 with 0.5 wt% hindered-amine light stabilizer masterbatch for outdoor storage and 2.0 wt% carbon black masterbatch for UV resistance in black grades. Compliance for dangerous goods pails follows UN Model Regulations Chapter 6.1 for 1H2 open-head plastics receptacles, with drop testing at 0.8 m on −18 °C conditioned samples; the grade is restricted to non-aggressive, non-environmentally stress-cracking fill goods because published ESCR data for surfactant-loaded formulations of this specific MFR class is limited. The conversion line uses single-cavity or 2+2 hot runner tools with shot weights from 800 g to 2,000 g, clamp force of 500 t to 800 t, melt temperature 215 °C to 235 °C, and total cycle 35 s to 50 s. Terminal finished parts are 5 L to 20 L injection-moulded pails for water-based paints, non-regulated cleaning agents, and emulsion adhesives.
When Freezer-Grade Storage Boxes Are Moulded at Below −18°C Service Temperature
Household freezer storage boxes made from HDPE M5040 must resist edge cracking at service temperatures down to −20 °C, which shifts the injection moulding window toward lower melt temperature and faster cooling to reduce crystallite size. Melt temperature is kept between 200 °C and 220 °C, mould coolant between 10 °C and 20 °C, and cooling time between 10 s and 18 s for wall sections of 1.5 mm to 2.5 mm. The formulation addition is 97.0 wt% to 100.0 wt% M5040 with 0.5 wt% to 1.0 wt% antistatic masterbatch to reduce dust attraction on polyolefin surfaces and 1.0 wt% to 3.0 wt% colour masterbatch; plasticizer-bearing colour carriers are avoided because low-temperature impact breaks in a brittle mode. Repeated food-contact compliance is assessed under FDA 21 CFR 177.1520(c) and Regulation (EC) No 1935/2004; low-temperature impact is checked by ISO 179-1/1eA Charpy notched impact at −20 °C on specimens cut from moulded bases. The downstream process uses 8-cavity to 16-cavity stack moulds with air-assisted lifters to eject lids without stress whitening at hinge fillets. Terminal finished products include stackable freezer containers, snap-lid storage boxes, and refrigerator drawer bins used in domestic and commercial kitchen environments.
Dimensional Shrinkage Control in Aerosol Overcap Bore Interference Fits
Dimensionally, aerosol overcaps and trigger sprayer shroud covers demand controlled post-mould shrinkage because assembly interference fits rely on a bore diameter tolerance of ±0.05 mm referenced in ISO 20457:2018. M5040 is processed at melt temperatures of 210 °C to 230 °C with a post-mould shrinkage window of 1.8% to 2.2% in flow and 1.5% to 1.8% across flow when measured on 60 mm × 60 mm × 2 mm plaques per ISO 294-4. Formulation addition is 100.0 wt% M5040 with 0.3 wt% to 0.6 wt% slip/antistat masterbatch; post-industrial regrind is permitted up to 15 wt% for non-food, non-cosmetic covers. Regulatory compliance is limited to REACH Annex XVII and RoHS Directive 2011/65/EU because these parts are not intended for direct food contact. The downstream production process uses 16-cavity to 32-cavity cold-runner or hot-runner injection tools, fast filling at 150 mm/s to 250 mm/s, holding pressure of 35 MPa to 50 MPa, and cooling of 6 s to 12 s. Terminal parts are 65 mm aerosol overcaps, trigger sprayer shroud covers, and pump actuator housings for household and institutional cleaning products.
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- LyondellBasell HDPE M5040 is manufactured under an ISO 9001 quality system and complies with relevant regulatory requirements.
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LyondellBasell HDPE M5040 is an injection-moulding-grade high-density polyethylene homopolymer supplied in pellet form. The material is categorised as PE-HD under ISO 1043 and carries a nominal density of 0.954 g/cm³ (ASTM D1505) and a nominal melt flow rate of 4.0 g/10 min (ASTM D1238, 190 °C/2.16 kg). The melt flow rate places the product in the medium-flow HDPE segment, above fractional-melt blow-moulding grades with MFR below 1.0 g/10 min and below high-flow thin-wall injection grades with MFR above 20 g/10 min. Applications reported for this grade class include rigid crates, industrial pails, trays, housewares, overcaps, and solid injection-moulded parts. The molecular weight moments Mw and Mn are not specified in the publicly available technical datasheet; melt flow rate is the primary rheological control parameter.
| Property | Nominal value | Test method |
|---|---|---|
| Melt flow rate | 4.0 g/10 min | ASTM D1238 / ISO 1133-1:2022, 190 °C/2.16 kg |
| Density | 0.954 g/cm³ | ASTM D1505 / ISO 1183-1 |
| Tensile stress at yield | 26.5 MPa | ISO 527-2, 50 mm/min |
| Elongation at yield | 11% | ISO 527-2 |
| Flexural modulus | 1,150 MPa | ISO 178 |
| Notched Izod impact at 23 °C | 2.2 kJ/m² | ISO 180/A |
| Vicat softening temperature | 127 °C | ISO 306/A50 |
| Shore D hardness | 64 | ISO 868 |
| Brittleness temperature | <-76 °C | ASTM D746 |
The values in Table 1 are nominal single-point data from manufacturer technical literature and should not be interpreted as guaranteed lot release minima. Conditioning of test specimens is normally 40 h at 23 °C and 50% relative humidity (ISO 291). Commercial HDPE homopolymers with equivalent melt flow rate and density commonly show batch-to-batch tensile yield stress variation within ±1 MPa; published lot-to-lot data for M5040 are not provided.
On production injection-moulding lines, HDPE M5040 is processed with a general-purpose polyolefin screw of 20:1 to 25:1 L/D and compression ratio 2.5:1 to 3.5:1. The non-return valve is a sliding-ring design with stroke between 1 mm and 2 mm. A flat barrel profile from 190 °C to 220 °C is common, with the nozzle at 210 °C to 225 °C. Mould temperatures are maintained at 15 °C to 40 °C for rapid skin formation; mould temperatures above 60 °C may be used to improve weld-line consolidation but increase cycle time. Back pressure of 5 bar to 15 bar and screw surface speeds of 0.1 m/s to 0.3 m/s provide melt homogenisation without excessive shear heating. Drying is not required for dry resin because moisture absorption of HDPE at 23 °C and 50% relative humidity is below 0.01%. Surface condensation from outdoor storage is removed by 2 h at 80 °C in a desiccant hopper dryer. Colouring is carried out with a polyolefin masterbatch at 2% to 4% letdown; precompounded coloured resin reduces the risk of layering in high-shear screw recovery sections.
Cooling time for a 2.0 mm wall is approximately 8 s to 12 s at a mould temperature of 20 °C. Heat extraction is made uniform by cooling channels of 8 mm to 12 mm diameter spaced at 2 to 3 times channel diameter from the cavity surface. Coolant flow should be set to maintain turbulent flow in the channel, corresponding to a Reynolds number above 10,000 in water-based circuits.
Regrind use in non-critical applications is typically limited to 20% by weight because higher levels increase variability from multiple heat histories and reduce notched Izod impact. For food-contact articles, regrind must be demonstrated to meet the same migration limits as virgin resin. Melt filtration through a 60 mesh screen at the machine throat or in a compounding step removes degraded gel particles.
How Does a 4.0 g/10 min Melt Flow Rate Alter Injection-Moulding Behaviour?
The 4.0 g/10 min melt flow rate is measured at low shear, but injection filling occurs at apparent shear rates of 100 s⁻¹ to 10,000 s⁻¹. At these shear rates, the pseudoplastic viscosity reduction of HDPE permits wall-section filling down to about 1.2 mm in multi-cavity tools. Spiral flow data for the exact grade are not published; for unfilled HDPE homopolymers with an MFR of 4.0 g/10 min, spiral flow lengths of 30 cm to 45 cm at 200 °C and 60 MPa injection pressure are within the expected class range. The low-shear MFR should not be used as a linear indicator of mouldability because injection pressure, gate geometry, and thermal diffusivity change the effective viscosity.
Melt temperature boundaries for this product class are between 180 °C and 250 °C. Below 180 °C, thin sections below 1.2 mm short-shot at normal injection pressures. Above 250 °C, residence times greater than 15 min can produce thermal-oxidative molar mass loss, yellowing, and occasional black speck formation in stagnant hot-runner zones. Processors should purge hot runners at shift changes for 5 min to 10 min with a low-MFR polyethylene or commercial purging compound. M5040-specific degradation kinetic data are limited.
Compared with a low-melt-flow HDPE homopolymer of MFR 0.5 g/10 min, M5040 reduces injection pressure requirement by an estimated 15% to 30% for identical tool geometry and melt temperature. The trade-off is a loss in environmental stress-cracking resistance and melt strength. Compared with a high-flow HDPE of MFR 20 g/10 min, M5040 has higher melt strength and generally better ESCR, but requires higher injection pressure and longer fill time in sections below 1.0 mm. Published comparative data for M5040 against specific grades are limited.
Mechanical performance is dominated by density and crystallinity. The nominal tensile stress at yield of 26.5 MPa (ISO 527-2) and flexural modulus of 1,150 MPa (ISO 178) are consistent with stackable crates and pails where top-load creep and sidewall deflection are primary failure modes. The notched Izod impact value of 2.2 kJ/m² at 23 °C (ISO 180/A) is a screening value, not a part-level impact guarantee. Brittleness temperature below -76 °C (ASTM D746) indicates that the material can remain ductile at freezer temperatures, but part design, notch radius, and processing-induced orientation control actual performance. Environmental stress-cracking resistance is not stated in the publicly available M5040 datasheet; users requiring ESCR data for aggressive detergent or agricultural chemical service should obtain an ASTM D1693 F50 value from the resin certificate of analysis or conduct bottle/closure-specific testing.
Gate Freeze, Shrinkage Anisotropy, and Packing-Pressure Decay
Dimensional control in injection-moulded M5040 parts is governed by gate freeze-off and anisotropic solidification shrinkage. For a 3.2 mm plaque, mould shrinkage is typically 0.015 mm/mm to 0.035 mm/mm. Flow-direction shrinkage is commonly 0.1 to 0.5 percentage points lower than transverse-direction shrinkage because orientation relaxes more along the flow path. Packing pressure of 40 MPa to 70 MPa is applied until gate freeze; for round gates of 1.5 mm to 2.5 mm diameter, gate freeze time is commonly 1.5 s to 4 s. A step-down pack/hold profile over 3 s to 6 s reduces sink marks and warpage. Vent depths should not exceed 0.02 mm to 0.03 mm, with land lengths of 0.5 mm to 1.0 mm. In multi-cavity hot-runner tools, resin stagnation in unheated manifold corners is a common source of black specks after 8 h of continuous operation; hot-runner suppliers should provide dead-spot-free flow channels and balance of pressure drop to within ±5 bar across cavities.
Weld-line strength is governed by melt temperature and mould temperature. When two flow fronts meet at a knit line, the molecular diffusion distance across the weld plane is small. Raising mould temperature from 15 °C to 60 °C can increase weld-line tensile strength in HDPE homopolymers, but published M5040-specific weld-line performance data are limited. Gate location should force weld lines away from hinge points, snap-fit undercuts, and pressure-bearing ribs. Direct edge gates of 1.0 mm to 2.0 mm depth are preferred over pin gates in thick sections above 3.0 mm.
When M5040 Replaces a Fractional-Melt Blow-Moulding HDPE in Thin-Walled Packaging
Replacing a fractional-melt blow-moulding HDPE with MFR 0.3 g/10 min with M5040 changes processing hardware and part design. The 4.0 g/10 min MFR is approximately 13 times higher, permitting injection moulding of wall stock from 1.2 mm to 2.5 mm at conventional injection pressures. The lower melt viscosity reduces fill pressure and allows shorter cycle times, but the lower molecular weight also reduces ESCR and melt strength. Blow-moulding fractional-melt HDPE grades are often selected for high ESCR because of their high molecular weight and high melt strength; M5040 is not a direct substitute in continuous stress-cracking service. Converters changing product design from blow moulding to injection moulding with M5040 should evaluate ASTM D1693 ESCR, full-part drop impact at -20 °C, and cap torque retention if closure threads are critical. The grade is not recommended for aggressive solvent or detergent packaging where long-chain branching and high molecular weight are required for F50 values above 50 h in 100% Igepal.
Regulatory status for food-contact applications requires converter verification. Under FDA 21 CFR 177.1520(c), olefin polymers may be used in contact with food, but the finished article must meet extraction specifications and conditions of use for the specific food simulant and temperature. For the EU, Regulation (EU) No 10/2011 sets an overall migration limit of 10 mg/dm². REACH obligations are defined under Regulation (EC) No 1907/2006. The resin alone is not an electrical and electronic equipment under Directive 2011/65/EU, so RoHS conformity is determined at the finished-article level. The resin identification code is 2 per ASTM D7611/D7611M.
| Framework | Reference | Evaluated parameter |
|---|---|---|
| US FDA polyolefins | 21 CFR 177.1520(c) | Density, melting point, extraction specifications, conditions of use |
| EU food-contact plastics | Regulation (EU) No 10/2011 | Overall migration limit 10 mg/dm²; specific migration limits for additives |
| REACH | Regulation (EC) No 1907/2006 | SVHC disclosure, registration status of monomer and additives |
| RoHS | Directive 2011/65/EU | Finished-article restriction of Pb, Hg, Cd, Cr(VI), PBB, PBDE |
| Resin identification | ASTM D7611/D7611M | Resin identification code 2 for HDPE |
Base resin compliance statements do not cover colour concentrates, purging residuals, regrind, or mould-release agents. Specific migration values for additives must be obtained from the additive masterbatch supplier. Published migration data for M5040 are limited.
