| HS Code | 517663 |
| Manufacturer | BASF Zhanjiang |
| Productname | HDPE IL 8008 |
| Polymertype | High Density Polyethylene (HDPE) |
| Density | 0.955 g/cm³ |
| Meltflowrate 190c 2 16kg | 8 g/10 min |
| Meltingpoint | 130 °C |
| Tensilestrengthatyield | 26 MPa |
| Elongationatbreak | 500 % |
| Flexuralmodulus | 1000 MPa |
| Vicatsofteningpoint | 125 °C |
| Heatdeflectiontemperature 0 45mpa | 75 °C |
| Hardnessshored | 65 |
| Notchedizodimpactstrength 23c | 20 kJ/m² |
| Waterabsorption | <0.01 % |
| Dielectricconstant 1mhz | 2.3 |
| Volumeresistivity | >10^16 Ω·cm |
| Thermalconductivity | 0.45 W/m·K |
| Coefficientoflinearthermalexpansion | 1.2×10^-4 /°C |
| Processingmethod | Injection Molding |
As an accredited BASF Zhanjiang HDPE IL 8008 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | BASF Zhanjiang HDPE IL 8008 comes in 25 kg polyethylene-lined woven bags, palletized, stretch-wrapped, and labeled for industrial use. |
| Container Loading (20′ FCL) | Loading BASF Zhanjiang HDPE IL 8008 into a 20′ FCL dry container: palletized 25 kg bags, shrink-wrapped, secured for ocean shipment. |
| Shipping | BASF Zhanjiang HDPE IL 8008 ships as non-hazardous polyethylene resin pellets in moisture-barrier bags—typically 25 kg sacks or 1,000 kg jumbo bags on pallets. Transport in clean, dry trucks, railcars, or sea containers; avoid heat, UV, and contamination. No special hazardous-materials handling required. |
| Storage | Store BASF Zhanjiang HDPE IL 8008 in a cool, dry, well-ventilated warehouse, away from direct sunlight, heat, flames, ignition sources, and strong oxidizers. Keep original bags or containers closed, palletized, and protected from moisture, dust, and UV exposure. Avoid excessive stacking. Maintain ambient temperatures, ensure good housekeeping, prevent water contact, and use first-in, first-out inventory. |
| Shelf Life | Typically 24 months when stored in original, unopened packaging under dry, cool conditions, away from direct sunlight and moisture. |
BASF Zhanjiang HDPE IL 8008 is a high-density polyethylene injection-moulding grade with a nominal melt mass-flow rate of 8 g/10 min at 190 °C/2.16 kg under ISO 1133-1. The grade is intended for short-flow-path injection moulding rather than blown film or pipe extrusion, and conversion conditions must be matched to the rapid solidification behaviour of high-density polyethylene. In returnable logistics crates and attached-lid containers, the resin is metered at 100 phr with 15–35 phr of clean post-industrial regrind from the same moulding cell, 2.0–4.0 phr of HDPE-carrier carbon black masterbatch, and 0.5–1.5 phr of antioxidant masterbatch. The regrind fraction is capped at 35 phr because overcooked material pulled from hot-runner manifolds can carry gel particles that reduce weld-line elongation; incoming regrind is screened through a 2.0 mm mesh and metered with virgin pellets before hopper loading. Injection moulding on a 800–1600 kN clamp force machine with a 20:1–24:1 L/D screw and 2.2:1–2.8:1 compression ratio is preferred; melt temperature is held at 200–230 °C, mould temperature at 20–50 °C, injection pressure at 70–100 MPa, and holding pressure at 45–65 MPa. Barrel residence time is limited to 10 min at 230 °C to avoid viscosity reduction from oxidative chain scission. The cylinder temperature profile is set as 180/200/220/225/220 °C from feed throat to nozzle, and back pressure is kept below 1.5 MPa to limit shear heating. In high-speed crate tools with hot-runner manifolds, the melt is passed through a 60/80 mesh screen pack or a hydraulic screen changer with 1.0 mm perforations to catch carbon black agglomerates and degraded regrind gels. Crate tools are designed with 1.0–1.5 mm nominal wall thickness at the base grid, 0.6–0.8 mm rib root thickness, and 0.5–1.0° draft angles to release deep ribs without vacuum or mould-surface drag. BASF Zhanjiang HDPE IL 8008 is supplied as non-hygroscopic pellets, but condensation at the hopper inlet can occur when cold silo material is transferred into a moulding hall above 60 % RH; in that case, pellets are conditioned for 1–2 h at 70–80 °C in a hot-air hopper dryer to eliminate surface splay. Environmental stress cracking resistance is checked according to ASTM D1693-15 condition B in concentrated detergent solution; if incoming lots show F50 below the plant acceptance limit, the part is annealed at 80 °C for 2 h to reduce frozen-in stress, but this step does not replace correct gate and vent sizing. Finished parts include returnable industrial tote boxes, collapsible dairy crates, and logistics pallet boxes.
Thin-wall dairy cups and takeaway containers moulded from IL 8008 typically have wall thicknesses of 0.35–0.60 mm, which shifts the process from pressure-limited to cooling-limited operation. The resin is blended at 100 phr with 3–8 phr of a linear low-density polyethylene or polyolefin plastomer to raise low-temperature impact without exceeding the overall migration limits of EU Regulation 10/2011. Food-contact compliance is supported by resin certification to FDA 21 CFR 177.1520(c) and China GB 4806.6-2016; the converter must still carry out overall migration testing according to EN 1186-1 using the intended food simulant and time-temperature conditions. The moulding cell operates with melt temperatures of 220–245 °C, mould temperatures of 10–25 °C, injection speeds of 120–180 mm/s, and a switch-over position set at 95–97% of cushion volume. Gate designs for thin-wall food packaging use edge gates with a land length of 0.5–0.8 mm and a gate depth of 0.3–0.5 mm; valve-gated hot runners are acceptable only if gate vestige height is below 0.10 mm. The screw is operated with a cushion of 1.0–2.5 mm because smaller cushions reduce holding pressure transfer and produce sink marks around the rim. Warpage is controlled less by post-mould temperature than by tooling: gates are located at 3–5 points around the rim, the cavity layout is balanced within ±2% flow length, and cooling channels are placed no more than 6–8 mm below the forming surface. Differential shrinkage across the base is monitored by measuring dome height variation across a 24-cavity run; a variation above 0.10 mm indicates inadequate holding pressure or premature gate freeze-off. Typical converted articles are refrigerated dairy portion cups, condiment tubs, and snap-on lid containers for chilled distribution.
For injection-moulded carbonated soft drink closures, IL 8008 is processed at 100 phr with 0.05–0.15 phr of a non-migratory slip system, because migratory erucamide at higher loadings can reduce cap-shell friction and create odour-prone migration into the headspace of the filled beverage. The mould is a 48–96-cavity hot-runner stack tool with thermal gate separation maintained within ±2 °C across all nozzles; melt temperature is 200–225 °C, mould temperature 10–25 °C, injection pressure 90–130 MPa, holding pressure 60–80 MPa, and cycle time 6–12 s. Screw decompression after plasticising is set to 3–6 mm to prevent nozzle drool on high-cavitation tools. Ovality is measured on the skirt after 24 h at 23 °C/50 % RH with a coordinate measuring machine; the in-house acceptance criterion of ≤0.15 mm total indicated runout is common for reliable capping torque. Batch-to-batch MFR is verified by ISO 1133-1 at 190 °C/2.16 kg because a shift of ±0.5 g/10 min can alter injection velocity and cause sink marks on the top panel. The resulting articles are one-piece screw caps for carbonated beverages, flavoured dairy beverages, and cold-filled liquid dairy products.
| Parameter | Thin-wall dairy cup | Logistics crate | Open-head pail |
|---|---|---|---|
| Melt temperature (°C) | 220–245 | 200–230 | 210–235 |
| Mould temperature (°C) | 10–25 | 20–50 | 25–45 |
| Injection pressure (MPa) | 80–110 | 70–100 | 80–110 |
| Holding pressure (MPa) | 50–70 | 45–65 | 55–75 |
| Cooling time or cycle | 2–5 s cooling | 15–25 s cooling | 25–40 s cycle |
Battery case injection introduces a separate constraint set because the finished part must retain impact resistance at -30 °C after prolonged exposure to 40 wt% sulphuric acid electrolyte. IL 8008 is formulated at 100 phr with 1.0–2.5 phr of HDPE-carrier carbon black masterbatch and 0.2–0.5 phr of a stabilizer package free of acid-extractable metal stearates; calcium stearate must be avoided because it can migrate into the electrolyte and increase self-discharge. The tool is built for 4000–8000 kN clamp force, with melt temperature 210–240 °C, mould temperature 20–50 °C, holding pressure 50–70 MPa, and cooling time 12–20 s for wall thicknesses of 2–4 mm. The regrind ratio must not exceed 10–15 phr because battery case scrap can contain acid residues and absorbent-glass-mat separator dust that accelerate oxidative degradation when reground into the melt. The stabilizer system is selected for long-term heat aging at 70 °C air; oven aging per ISO 188 is used to screen against early embrittlement. Weld lines at the cell partition intersections are evaluated by ISO 179-1/1eA notched Charpy at -30 °C; published data for this specific configuration is limited, so each battery case project should qualify the material in the production tool rather than rely on laboratory plaques. End products include lead-acid starter battery containers for light commercial vehicles and stationary storage boxes.
Open-head pails and conical industrial containers in the 10–30 L range use IL 8008 at 100 phr with 15–35 phr of in-house regrind, 1.5–3.0 phr of an HDPE-compatible UV stabiliser masterbatch, and 1.0–2.0 phr of colour masterbatch; outdoor storage requires UV stabilisation, and unstabilised HDPE pail surfaces subjected to ISO 4892-2 xenon-arc exposure can reach pronounced surface cracking after 500–1000 h. The moulding machine operates at 2500–5000 kN clamp force, melt temperature 210–235 °C, mould temperature 25–45 °C, injection pressure 80–110 MPa, holding pressure 55–75 MPa, and cooling time 25–40 s depending on rim thickness. UN certification as an 1H2 package requires drop, stacking, and leakproofness testing under the applicable dangerous goods regulations; for Packing Group II solids the drop height is 1.2 m, the stack test applies a load for 28 days at 40 °C, and the leakproofness test is performed with compressed air. The material supplier’s datasheet does not cover UN certification, so moulders must test the finished pail with the actual gasket and lid after conditioning at -18 °C for 24 h when low-temperature impact is required. Pails for hazardous materials may not include post-consumer recycled content if the customer’s dangerous goods approval requires virgin-grade polymer. The UV masterbatch particle size must be below 25 µm to avoid pinholes in the 1.0–2.0 mm wall section. Finished packs are open-head industrial pails, conical containers for coatings and adhesives, and tight-head inserts for agricultural chemical distribution.
Across low-pressure water and drainage networks, injection-moulded HDPE pipe fittings are processed from IL 8008 at 100 phr with 1.5–3.0 phr of a highly dispersed carbon black masterbatch to meet the UV durability requirements of outdoor storage. Pressure-containing fittings require hydrostatic strength qualification according to ISO 4427-2 or EN 12201-3; the injection moulder must demonstrate that weld lines in the fitting body do not reduce the hydrostatic design basis below the minimum required strength of the pipe system. The moulding window uses melt temperatures of 200–220 °C, mould temperatures of 20–40 °C, injection pressures of 70–100 MPa, and holding times of 6–10 s/mm of nominal wall thickness; conformal cooling channels are used in thick boss areas to bring the temperature gradient below 5 °C across the cross-section before ejection. During injection, the screw is operated at 40–70 rpm; screw speeds above 80 rpm can create unmelted carbon black agglomerates and lower hydrostatic burst strength at the weld line. The filling time is kept between 1.0–2.5 s for a multi-cavity fitting tool, followed by a two-stage holding profile of 55 MPa for 3 s and 35 MPa for 5–8 s to keep the sealing face flat. Gate location is placed away from the sealing face because gate blush and frozen-in stress can cause leakage under hydrostatic pressure. For potable water contact, fittings must meet the migration and organoleptic requirements of the local regulation, such as China GB/T 17219 or the national conversion of Regulation (EC) No 1935/2004. This grade is not intended for gas distribution without separate minimum required strength classification. Converted components are butt-fusion fittings, electrofusion saddle bases, and threaded transition fittings for irrigation and low-pressure industrial water.
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BASF Zhanjiang HDPE IL 8008 is identified in trade documentation as a high-density polyethylene grade allocated to the integrated production complex in Zhanjiang, Guangdong Province. The commercial designation is not currently accessible in a public BASF technical datasheet under the exact IL 8008 string; therefore grade-specific values for density, molecular mass distribution, antioxidant package, and melt mass-flow rate require verification against the manufacturer’s certificate of analysis or lot release report. Published data for this specific configuration is limited. Where the numeric block follows the regional polyolefin nomenclature, an 8008 designation is commonly interpreted as a density near 0.958 g/cm³ and a melt flow index near 0.8 g/10 min at 190 °C/2.16 kg, but this convention cannot be treated as a specification absent producer confirmation. The grade belongs to the higher-density segment of HDPE with typical applications in rigid packaging, industrial containers, caps and closures, pallets, crates, and structural foam, subject to lot-traceable mechanical data.
Decoupling the proprietary suffix from generic HDPE class data is essential because the melt flow ratio and molecular weight distribution shift processing behavior even when single-point MFR remains constant. Two HDPE grades can exhibit identical MFR at 190 °C/2.16 kg and yet diverge in shear viscosity at injection shear rates above 1000 s⁻¹, because the MFR captures only a single point on the flow curve. For HDPE 8008-class resins, the density region around 0.956–0.960 g/cm³ typically results from a low ethylene comonomer content such as 1-butene or 1-hexene; the comonomer short-chain distribution controls slow-crack-growth resistance and flexural-modulus trade-offs. Without producer-specific gel permeation chromatography data and 13C NMR triad distributions, comparisons against ISO 178 or ISO 527-2 values should be treated as class-level rather than lot-level. A further distinction arises from chromium-based and Ziegler-Natta or metallocene catalyst systems: chromium-catalyzed HDPE often contains long-chain branching that alters shear thinning and melt strength, whereas Ziegler-Natta products of the same density may have broader short-chain branching and lower lot-to-lot consistency. The IL 8008 grade should therefore be specified by its measured polydispersity index, melt flow ratio, and additive package rather than by density alone.
The processing conflict for HDPE 8008-class materials lies between a low melt flow index and a narrow molecular weight distribution. A low MFR is desirable for slow-crack resistance and top-load strength in thick-wall containers, but it raises injection pressure and can limit fill in thin-wall sections. At a density of 0.958 g/cm³, the semicrystalline network is approximately 60–75% crystalline depending on cooling rate and comonomer content; this crystallinity contributes a flexural modulus above 1000 MPa but also causes significant post-molding shrinkage. Quench-rate gradients in a cold-runner tool can generate internal stress concentrations at the intersection of sidewall and base; these stress concentrators are not detected by standard tensile bars but become visible in drop-impact failures of filled containers. On production-scale lines, the use of a 24:1 L/D single-screw extruder with a compression ratio between 2.5:1 and 3.5:1 and a melt pump is recommended for stable output; screw designs with shallow metering channels reduce melt-temperature variability. Lot-to-lot variations in catalyst residues, particularly titanium and aluminum at low ppm levels, can shift the melt rheology even when the MFR remains inside specification, because organoaluminum passivation influences chain disentanglement and die swell.
High-density polyethylene is not hygroscopic to the extent of polyamide or polyester, but surface moisture and condensed water can cause melt hydrolysis of phosphite antioxidants, leading to increased aldehydes and surface splay. At relative humidity above 60%, bags of HDPE 8008-class resin stored in unheated warehouses can accumulate enough surface moisture on cold granules to produce voids in thick-wall parts; the problem is exacerbated when ambient temperature cycles cross the dew point. Pre-drying at 80 °C for 2–4 h with a desiccant dryer having a dew point below -30 °C is recommended when production records show blisters, silver streaks, or a 0.05% by weight moisture uptake. Hopper dryers are rarely sufficient because residence time may be too short. Incompatibility data for this class indicates that prolonged contact with strong oxidizing agents, high-aromatic hydrocarbon solvents, and certain copper-containing heat-transfer fluids should be avoided because they can initiate thermo-oxidative chain scission and lower the oxidation induction time measured by ISO 11357-6. The oxidation induction time of a well-stabilized HDPE lot typically exceeds 20 min at 200 °C under oxygen, but published data for BASF Zhanjiang HDPE IL 8008 is not available for independent verification.
On injection molding lines with 25–40 mm general-purpose polyolefin screws at L/D ratios between 20:1 and 25:1, the melt temperature window for high-density polyethylene of this class is commonly set from 190 °C to 230 °C for thick-wall articles, with mold-temperature control at 20–40 °C for fast dimensional stabilization. Back pressure in the range 0.5–1.0 MPa and screw speed 80–150 rpm are typical starting values, but actual settings require adjustment based on the machine’s screw recovery time and check-ring leakage. Blow molding grades in this density range demand high swell consistency and melt strength; variations in die gap, parison wall thickness, and accumulator head pressure are more influential than single-point MFR when evaluating bottle weight consistency. Published data for BASF Zhanjiang HDPE IL 8008 under production-scale blow molding is limited; converter-scale trials with in-line wall-thickness monitoring and drop-impact testing per ASTM D2463-15 remain necessary. For compression molding of test plaques, a press pressure of 5–15 MPa and cooling rate of 15–20 °C/min are typical, but the resulting morphology may differ from injection-molded parts due to lower orientation.
The following table summarizes class-level HDPE values for 8008-type resins; they are not grade-specific values for BASF Zhanjiang HDPE IL 8008 absent a manufacturer certificate.
| Property | Test method | Class-level range or value | Unit |
|---|---|---|---|
| Density | ISO 1183-1 / ASTM D1505 | 0.956–0.960 | g/cm³ |
| Melt mass-flow rate at 190 °C, 2.16 kg | ISO 1133-1 | 0.70–0.90 | g/10 min |
| Tensile yield stress | ISO 527-2 | 24–28 | MPa |
| Flexural modulus | ISO 178 | 1100–1400 | MPa |
| Notched Izod impact at 23 °C | ISO 180/A | 4–6 | kJ/m² |
| Vicat softening temperature | ISO 306/A50 | 124–128 | °C |
| Environmental stress-cracking resistance F50 | ASTM D1693 condition B, 100% Igepal | >50 | h |
| Mold shrinkage, flow direction | ISO 294-4 | 1.5–2.0 | % |
These class-level values are not a substitute for a product-specific datasheet. The broad modulus band reflects differences in comonomer type, catalyst residue, and nucleating additives. For applications requiring long-term hydrostatic strength, such as small-diameter pressure pipes or geosynthetic liners, the HDPE class must also be evaluated by ISO 9080 or ASTM D2837; a single F50 environmental stress-crack-resistance value does not establish design stress. Similarly, the melt flow rate alone does not detect molecular weight bimodality, which can be present in reactor blends and affects parison sag and injection-molding hold-pressure requirements.
Differences from other HDPE products become measurable when batch-to-batch variance is traced through three axes: molecular weight breadth, additive stabilization, and catalyst metal residues. A blow-molding HDPE such as an 8008-class resin is optimized for a narrow swell envelope and low gels; by contrast, a bimodal HDPE pipe grade in the same density band will show a much broader molecular weight distribution, higher melt strength, and higher viscosity at low shear, but lower melt index. Compared with HDPE film grades at density 0.940–0.950 g/cm³, the 8008 designation implies higher crystallinity, higher flexural modulus, lower permeability to oxygen and water vapour, and reduced dart impact and tear resistance. Compared with random copolymer polypropylene used in closures, the HDPE does not require the same hydrogen peroxide or organoleptic stabilization systems but is more susceptible to environmental stress cracking in the presence of polar aromatic hydrocarbons and certain surface-active agents. Thus the substitution of IL 8008 for other rigid packaging polymers must be governed by ESCR exposure tests under actual filling-line chemicals, not by density and MFR alone. Against polypropylene homopolymer, HDPE 8008-class resin typically shows lower top-load strength retention after hot filling above 80 °C, because the Vicat softening point is lower than that of nucleated polypropylene, which can exceed 150 °C.
When the same IL 8008 material moves from compression molding to high-shear injection molding, orientation and residual stress alter measured properties even without a formulation change. High-shear flow fields can orient the crystalline lamellae along the fill direction, increasing tensile yield stress in the flow direction by up to 10–20% compared with compression-molded plaques, while reducing notched impact in the perpendicular direction. This anisotropy is documented in HDPE by ASTM D638 and ISO 527-2 tests on specimens cut at 0° and 90° to melt flow. Shrinkage also changes: HDPE class materials typically show mold shrinkage of 1.5–2.0% in the flow direction and 2.0–3.0% transverse, requiring asymmetric tooling allowances. If the grade is tailored for injection molding, flow-length-to-wall-thickness ratios may exceed 200:1 for spiral-flow testing at 100 MPa injection pressure, but this cannot be assumed without BASF Zhanjiang’s lot-specific spiral-flow certificate. The transition from a 350 t injection molding machine to a 150 t machine for the same tool can produce different molecular orientation due to shear-rate variation, leading to inconsistent dimensional stability in lids and closures. Shot-to-shot consistency depends on plastication capacity, non-return valve seal, and cushion control, not solely on resin MFR.
Thermal degradation in HDPE 8008-class systems proceeds through auto-oxidation, chain scission, and crosslinking, with the balance shifted by catalyst residues and the phenolic/phosphite stabilizer package. In an inert atmosphere, thermogravimetric analysis typically measures a decomposition onset near 380–400 °C, but in air the oxidation onset can fall below 230 °C if the stabilizer package is depleted. Processing above 280 °C should be avoided because it accelerates the formation of conjugated double bonds and increases gel formation, visible as fisheyes in film or surface defects in injection-molded parts. Multiple-pass re-extrusion of HDPE with a narrow stabilizer margin can reduce the oxidation induction time by 50% after three passes; this is a critical quality-control boundary for in-house scrap recovery. The addition of up to 20% regrind may be tolerated for non-food technical parts, but food-contact applications require strict adherence to Regulation (EU) No 10/2011 and 21 CFR 177.1520 regarding recyclate origin and functional barrier status. Published degradation kinetic data for BASF Zhanjiang HDPE IL 8008 in multi-pass extrusion is limited; each converter should determine the lot-specific oxidative stability by ISO 11357-6 before setting regrind ratios.
Compliance statements for HDPE 8008-class resins are governed by the following matrix; no claim of compliance for BASF Zhanjiang HDPE IL 8008 can be based on this table alone because additive composition and supplier declarations control the final status.
| Regulatory domain | Applicable standard or regulation | Typical requirement |
|---|---|---|
| EU food contact | Regulation (EU) No 10/2011 as amended | Overall migration <10 mg/dm²; specific migration limits substance-specific |
| US FDA food contact | 21 CFR 177.1520 | Olefin polymer requirements; end-use conditions A–H |
| REACH | EC 1907/2006 | SVHC declarable at 0.1% w/w per article |
| RoHS | Directive 2011/65/EU as amended by (EU) 2015/863 | Pb, Hg, Cd, Cr(VI), PBB, PBDE, DIBP, DEHP, BBP, DBP limits |
| CONEG heavy metals | US model legislation | Sum of Pb, Cd, Hg, Cr(VI) <100 ppm |
| Good manufacturing practice | Regulation (EC) No 2023/2006 | Process hygiene and traceability requirements |
The testing burden is not limited to final resin certification. Converters must verify that masterbatch additives, colorants, and processing aids do not alter the organoleptic profile of the molded article, particularly for dairy and bottled-water closures. Residual aldehyde and hexane extractables are tested by headspace gas chromatography at 80 °C for 2 h and by Soxhlet extraction under hexane according to regulatory guidance; lot-specific values for BASF Zhanjiang HDPE IL 8008 are not publicly available.
Thin-wall container production on a 350 t injection molding machine with a 64-cavity hot-runner mold exposes the influence of melt uniformity and additive dispersion in ways that a single-point MFR cannot capture. Maintaining hot-runner manifold temperatures at 210–230 °C and nozzle tips below 260 °C prevents premature degradation and low-molecular-weight aldehyde formation in HDPE; the degradation onset is approximated by thermogravimetric analysis at 380–400 °C under nitrogen, but oxidation onset may be lower under air. For closures, continuous capping torque retention after pasteurization at 85–95 °C for 30 min is often the decisive test. Without the manufacturer’s thermal-oxidative stability data for BASF Zhanjiang HDPE IL 8008, a converter must run differential scanning calorimetry and multiple headspace GC/MS analyses on the actual production lot before validating migration compliance and organoleptic acceptability.
