| HS Code | 266383 |
| Materialtype | High Density Polyethylene (HDPE) |
| Meltindex | 7.5 g/10 min |
| Density | 0.960 g/cm³ |
| Tensilestrengthatyield | 28 MPa |
| Tensileelongationatyield | 10% |
| Flexuralmodulus | 1.2 GPa |
| Notchedizodimpact | 0.5 ft-lb/in |
| Deflectiontemperatureat1 8mpa | 65°C |
| Deflectiontemperatureat0 46mpa | 82°C |
| Vicatsofteningpoint | 127°C |
| Shoredhardness | 70 |
| Waterabsorption | 0.01% |
| Moldshrinkage | 0.020 in/in |
| Meltingpoint | 130°C |
As an accredited Bamberger Polymers HDPE HD0760 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Bamberger Polymers HDPE HD0760 is packaged in 25 kg (55 lb) polyethylene bags, typically 40 bags per pallet for safe industrial shipping. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL): Bamberger Polymers HDPE HD0760 in palletized 25 kg bags, stretch-wrapped, securely braced for ocean transport. |
| Shipping | Bamberger Polymers HDPE HD0760 is shipped as non-hazardous solid resin pellets, typically in 25 kg polyethylene bags or 1,000 kg bulk bags on pallets. Transport in dry, clean trucks or containers at ambient temperature. Protect from moisture, sunlight, and contamination. No special DOT/IMDG/IATA hazard classification required. |
| Storage | Store Bamberger Polymers HDPE HD0760 in a cool, dry, well-ventilated area away from direct sunlight, heat, sparks, and open flames. Keep containers tightly closed to prevent moisture and contamination. Avoid prolonged UV exposure and excessive stacking. Maintain moderate ambient temperatures and keep away from strong oxidizers. Use good housekeeping to prevent pellet spills and slipping. Store in original packaging. |
| Shelf Life | Bamberger Polymers HDPE HD0760 has no specific shelf life; store sealed, cool, dry, away from UV, heat, moisture, and contamination. |
Bamberger Polymers HDPE HD0760 is processed on single-station and dual-station shuttle blow moulding lines with 80–120 mm grooved-barrel extruders at 24:1–30:1 L/D. The grade, specified by a melt flow index of 0.70 g/10 min at 190 °C/2.16 kg under ISO 1133-1:2022 and a density of 0.960 g/cm³ under ISO 1183-1:2019, requires melt temperatures of 190–210 °C. Accumulator head setpoints are split 180–195 °C at the accumulator and 170–185 °C at the die bushing. Parison programming with radial wall thickness control is mandatory for 20–30 L tight-head containers; the die gap is widened to 2.5–3.5 mm at pinch-off zones and narrowed to 1.2–1.8 mm across body walls. Blow pressure of 0.7–0.9 MPa and mould temperature of 10–20 °C stabilize flash thickness below 1.0 mm and reduce post-mould warpage. For a 25 L tight-head container, cycle time on a single-head shuttle machine is typically 45–65 s. The pinch-off weld must retain a minimum thickness of 1.5 mm because UN certification testing under 49 CFR Part 178 and ADR Chapter 6.1 applies a drop height of 1.2 m for Packing Group II liquids and a hydraulic pressure hold of 100 kPa for 30 min. Environmental stress crack resistance under ASTM D1693 Condition B, F50 greater than 300 h, is the primary acceptance criterion for containers holding surfactants, agricultural adjuvants, or petroleum-based formulations. Terminal products include UN 1H1-certified jerrycans for hydrocarbons, cleaning agents, and crop protection chemicals.
Monolayer containers produced from HD0760 are used for aromatic hydrocarbon and ketone formulations only when barrier performance is augmented by in-line fluorination. In-line fluorination introduces a dilute fluorine mixture, typically 0.1–1.0 vol% F2 in nitrogen, into the parison interior for 5–15 s; the reaction replaces surface polyethylene C–H bonds with C–F bonds to a depth of 5–50 nm. The governing variable is reactor temperature 20–50 °C, with the resulting surface fluorine-to-carbon ratio measured by X-ray photoelectron spectroscopy held below 0.4 to avoid discoloration and embrittlement. Treated containers are evaluated for weight loss under ASTM D2684 to verify permeation resistance for toluene, xylene, and methyl ethyl ketone. Compliance requires adherence to applicable local air permitting for fluorine gas handling; finished containers must satisfy UN 1H1 performance tests for the specific hazardous material class. Published data for this specific configuration is limited for HD0760; qualification tests are therefore run per chemical matrix, not extrapolated from generic HDPE values. Terminal products include 500 mL to 10 L solvent bottles, windshield washer concentrate bottles, and fuel additive packages.
Sheet extrusion with HD0760 is performed on a 90–120 mm single-screw extruder with a barrier screw and 30:1 L/D. Barrel zones are profiled 180–220 °C from feed to metering, and the flat die is held at 210–225 °C. The die gap is set 0.5–1.0 mm above target sheet thickness because HDPE exhibits die swell and draw-down. A three-roll polishing stack operates with top and middle roll temperatures of 80–95 °C and a lower roll temperature of 70–85 °C to control crystallinity and sheet curl; calendering draw ratio is kept between 1.0:1 and 1.2:1 to avoid orientation imbalance. Thermoforming from 3–6 mm sheet uses upper and lower quartz heaters at 350–420 °C and a sheet surface temperature of 160–180 °C at forming. Vacuum-assisted plug forming with aluminium plug temperatures of 120–140 °C produces consistent material distribution in 800 mm × 600 mm trays. The grade complies with 21 CFR 177.1520(c) for olefin polymers in contact with non-fatty, aqueous, and dry foods, provided extraction tests under 21 CFR 177.1520(d) are satisfied. Terminal products include reusable industrial dunnage trays, automotive interior panels, and material handling sleeves.
Large-part blow moulding with HD0760 is normally restricted to containers up to approximately 120 L because the melt flow index of 0.70 g/10 min produces unacceptable parison sag beyond 1,000 mm parison length on accumulator-head machines with 10–30 kg shot capacity. The accumulator is operated at 175–195 °C, and parison drop time is kept below 3.0 s. Wall-thickness programming uses 100–300 µs servo response times to create moil and pinch zones with 4.0–5.0 mm thickness and body zones at 2.0–2.5 mm. Mould closing speed shall exceed 500 mm/s to minimize melt draw at the parting line, and pre-blow pressure of 0.1–0.3 MPa is introduced 0.5–1.0 s before full mould closure to stabilize parison diameter. Cooling water at 12–18 °C circulates through beryllium-copper pinch inserts; blow time of 180–300 s is required for 100 L parts. The primary failure mode observed at production scale is top-load creep and thinning at the parison weld line; therefore, the moulded part must pass a 24 h top-load test at 1.5 times the expected stacking load under ASTM D2659. If container volumes above 150 L are required, HD0760 alone is not recommended; high-molecular-weight HDPE with a melt flow index below 0.3 g/10 min or a 70:30 blend with such a grade is substituted. Terminal products include 60–120 L agricultural water tanks, intermediate bulk container liners, and waste collection bodies.
Profile extrusion of HD0760 for industrial ducting and cable protection runs on a 60–90 mm single-screw extruder with a gear pump and breaker plate screen pack of 40/80/40 mesh. Barrel temperatures are set from 180 °C at feed to 210 °C at the adapter; the die head is held at 200–215 °C. A land length of 10:1 relative to the profile gap is used to build backpressure and eliminate weld lines. Vacuum calibration at −0.1 to −0.3 bar with chilled water at 20–40 °C fixes external dimensions; a second water bath at 20–60 °C completes cooling before the haul-off. Extrusion line speed for thin-wall duct sections is typically 2–5 m/min. The material is not hygroscopic, but surface condensation on pellets stored outdoors must be removed by an 80 °C hot-air hopper dryer for 2 h when relative humidity exceeds 60%. Compliance with RoHS Directive 2011/65/EU is limited to heavy-metal restrictions in the virgin compound, and the profile is not recommended for continuous service above 60 °C under mechanical load. Terminal products include cable protection conduits, conveyor guide rails, and edge-protection profiles.
| Application segment | Regulation or standard | Test method or clause | Typical acceptance criterion |
|---|---|---|---|
| UN-certified tight-head containers | 49 CFR Part 178 / ADR Chapter 6.1 | hydraulic pressure, drop test | 100 kPa for 30 min; 1.2 m for PG II |
| Food-contact extruded sheet | 21 CFR 177.1520(c) | extraction test | non-fatty, aqueous, dry food |
| Fluorinated solvent containers | local air permit / UN 1H1 | ASTM D2684 | mass loss specific to chemical matrix |
| Industrial profiles | RoHS 2011/65/EU | XRF screening | Pb, Hg, Cd, Cr(VI) below 1000 ppm in homogeneous material |
Regrind from thermoformed sheet skeletons can be reintroduced into the HD0760 sheet stream at levels up to 30 wt% without a separate drying step if the regrind is granulated, passed through a 6 mm screen, and fed through a side-stuffer with a vented barrel at −0.04 MPa vacuum. The melt flow index of the blend increases by approximately 0.05–0.10 g/10 min per 10 wt% regrind due to chain scission; this must be offset by reducing the metering zone temperature by 5–10 °C. In typical closed-loop HDPE sheet operations, operators report dart impact strength under ISO 7765-1 and tensile elongation at break under ASTM D638-14 decline by 10–20% at 30 wt% regrind; this regression must be verified for HD0760 on the production line because supplier data for the specific blend is limited. The primary production bottleneck is fines accumulation on the roll stack and sheet surface pitting; the polishing roll nip pressure must be increased to 0.4–0.6 MPa to maintain gloss and thickness variance below ±0.05 mm. Extruder screw speed is held below 80 rpm to limit shear heating in the regrind-rich melt. Terminal products include industrial dunnage trays, slip sheets, and non-food handling sleeves.
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Bamberger Polymers HD0760 is a high-density polyethylene extrusion blow molding grade supplied in pellet form under the model designation HD0760. The grade is identified by a nominal density of 0.960 g/cm³ and a nominal melt flow rate of 0.70 g/10 min when conditioned at 190°C under a 2.16 kg piston load according to ASTM D1238. The primary application envelope includes rigid containers in the 250 mL to 10 L size range produced on continuous shuttle and accumulator-head extrusion blow molding lines. The grade is not designed for injection molding, film casting, or sheet extrusion; its melt index places it in the medium-flow blow molding range where parison melt strength and container wall stiffness are balanced through density control.
Processing on a single-screw extruder with an L/D ratio of 24:1 to 30:1 and a compression ratio of 3.0:1 to 4.0:1 is the common equipment configuration for this density and melt flow class. Published processing guidelines for extrusion blow molding HDPE recommend a hopper-to-die temperature profile beginning at 160°C to 180°C in the feed zone and rising to 190°C to 210°C at the die. Melt temperature measured at the die should remain within 190°C to 220°C. Temperatures below 190°C increase melt viscosity, raise backpressure, and can produce surface melt fracture on thin parisons; sustained operation above 220°C may shift molecular weight distribution and create visible yellowing or odor in regrind.
The parison swell and sag behavior of HD0760 is governed by its melt flow rate and density. At 0.70 g/10 min, the grade has lower melt strength than fractional-melt HDPE grades used for 20 L drums or larger industrial containers. Die gap programming is therefore required on moving mold closures. On accumulator-head machines, a parison programming curve that reduces die gap near the top of the parison and reopens it just before pinch-off compensates for sag-induced neck thinning. Tooling design should account for measured die swell on the production die. Die swell in blow molding HDPE is shear-rate-sensitive and cannot be specified by a single numerical value without coupling it to die land length, die gap geometry, and extrusion rate.
Moisture absorption in HDPE is generally low. At ambient relative humidity below 60%, pre-drying is not required. If pellets are brought from cold storage into a humid processing area, surface condensation can form; in that condition, a desiccant hopper dryer set at 80°C for 2 h with a dew point of ≤ -30°C removes surface moisture. Regrind levels up to 20 wt% are used in non-critical containers when regrind is clean, dry, and generated from the same grade. Higher regrind fractions increase black speck and gel formation and must be validated by drop-impact testing according to ASTM D2463 or the brand owner’s equivalent container qualification method.
| Process parameter | Setpoint range | Measurement basis |
|---|---|---|
| Feed zone temperature | 160–180°C | Barrel thermocouple |
| Metering zone temperature | 180–200°C | Barrel thermocouple |
| Die head temperature | 190–210°C | Head thermocouple |
| Melt temperature | 190–220°C | Immersion thermocouple at die exit |
| Blow mold coolant temperature | 10–20°C | Chiller setpoint |
| Blow air pressure | 0.6–0.8 MPa | Regulator gauge |
| Extruder L/D ratio | 24:1–30:1 | Machine specification |
| Pre-drying | Not required at ambient RH < 60%; otherwise 80°C for 2 h | Desiccant hopper dryer |
The primary grade identification values are density and melt flow rate. The distributor technical literature lists 0.960 g/cm³ and 0.70 g/10 min as nominal values with the corresponding test methods ASTM D1505 and ASTM D1238, respectively. For a high-density polyethylene of this density and MFR class, published mechanical property data from comparable blow molding grades commonly fall within tensile yield stress 22–30 MPa under ASTM D638, flexural modulus 900–1,400 MPa under ASTM D790, elongation at break > 600% under ASTM D638, and notched Izod impact 3–10 kJ/m² under ASTM D256. Lot-specific values for HD0760 must be obtained from a certificate of analysis; the distributor’s published data for this specific formulation provides the density and MFR identifiers rather than a complete multi-point mechanical property curve.
The environmental stress crack resistance of a 0.960 g/cm³ density grade is lower than that of lower-density HDPE grades with densities near 0.952 g/cm³. HD0760 should not be used for aggressive detergent or alcohol-surfactant-filled containers unless a lot-specific ASTM D1693 ESCR test demonstrates adequate resistance under the exact fill formulation and storage temperature. Density-driven stiffness is obtained at the cost of ESCR; this is the central tradeoff separating HD0760 from softer fractional-melt HDPE blow molding grades.
| Property | Standard designations | Common units |
|---|---|---|
| Melt flow rate | ASTM D1238, ISO 1133-1:2022 | g/10 min |
| Density | ASTM D1505, ISO 1183-1:2019 | g/cm³ |
| Tensile properties | ASTM D638, ISO 527-2 | MPa, % |
| Flexural modulus | ASTM D790, ISO 178 | MPa |
| Notched Izod impact | ASTM D256, ISO 180 | kJ/m² |
| Environmental stress crack resistance | ASTM D1693 | h |
| Vicat softening temperature | ASTM D1525, ISO 306 | °C |
| Hardness | ASTM D2240, ISO 868 | Shore D |
In comparison with a fractional-melt blow molding HDPE with a melt flow rate of 0.25–0.45 g/10 min and density 0.945–0.952 g/cm³, HD0760 produces lower extruder head pressure and typically permits higher screw speed before over-temperature, but the parison sags more at a given melt temperature. That shift requires die gap program adjustments and may limit maximum container size. The higher density increases top-load stiffness and sidewall apparent hardness but reduces ESCR and low-temperature impact. These differences are not defects; they are process substitutions governed by the container fill chemistry and mechanical load specification.
Against injection molding HDPE grades with melt flow rates above 20 g/10 min, HD0760 is unsuitable. The viscosity difference in spiral-flow and injection-fill geometries is of practical significance; injection grades are designed for fast cavity filling at low clamp forces, whereas the melt flow rate and molecular weight of HD0760 are designed to hold a parison shape before mold closure. Against film-grade HDPE with density near 0.948 g/cm³ and melt flow rate near 1.0 g/10 min, HD0760 has higher stiffness and lower water vapor transmission rate when measured under ISO 15106-1, but the higher density also reduces dart impact and tear resistance. This is why the grade is not allocated to film extrusion.
If a processor substitutes HD0760 into an existing blow molding line previously qualified on a fractional-melt HDPE, the first process variable to change is melt temperature rise due to lower viscosity and reduced shear heating. Barrel zones may need to be reduced by 5–10°C, and the die gap profile must be re-baselined because parison sag increases. The top-load capacity of finished containers may increase from the higher density, while the environmental stress crack resistance may decrease. Both values must be confirmed against the original container specification. Pinch-off weld integrity can shift because a lower-viscosity melt penetrates the pinch-off land more readily. Mold pinch-off clearance must be maintained within the original toolmaker’s dimensional tolerance, and flash thickness should be monitored to avoid over-compression.
When HD0760 replaces a lower-density HDPE in a dairy container, the bottle sidewall thickness may be reduced while maintaining equivalent top-load stiffness, but the processor should verify that the design does not become impact-limited. Drop testing according to ASTM D2463 or an equivalent full-container method is required. The material should not be used with aggressive solvents, high-shear injection molding, or open-flame contact unless the final article has been qualified for the intended service condition.
Regulatory status for food-contact applications must be confirmed against the current supplier written statement. HDPE grades of this density class are assessed under FDA 21 CFR 177.1520(c) for olefin polymers and under EU Regulation (EU) No 10/2011 with an overall migration limit of 10 mg/dm² or 60 mg/kg depending on the final article shape and simulant. Lot-specific conformance requires that the polymer meet extractivity limits and that the finished article be tested under the applicable food-simulant conditions. For electrical and electronic equipment applications, the grade should be evaluated against RoHS Directive 2011/65/EU maximum concentration values of 0.1 wt% for lead, mercury, hexavalent chromium, PBB, and PBDE and 0.01 wt% for cadmium in homogeneous materials. REACH SVHC obligations apply to the final article, not merely to the pellet feedstock.
Moisture uptake at equilibrium in HDPE is typically below 0.01 wt% at 23°C and 50% RH, so drying is not a primary concern. However, regrind from post-consumer sources or mixed-color scrap introduces contamination beyond moisture alone. Processors should establish an incoming material acceptance plan that includes melt flow rate per ASTM D1238 and density per ASTM D1505 on each lot, and should verify that pellet color, odor, and foreign matter levels remain within the container specification. Published data for this specific configuration is limited for additive package details; the distributor should be consulted for the current lot-specific antioxidant and neutralizer package if long-term storage or repeated regrind exposure is expected.
