| HS Code | 191108 |
| Polymer Type | High Density Polyethylene (HDPE) |
| Melt Flow Rate 190 C 2 16 Kg | 0.45 g/10 min |
| Density | 0.954 g/cm3 |
| Melting Temperature | 131 °C |
| Vicat Softening Temperature | 127 °C |
| Tensile Strength At Yield | 27 MPa |
| Elongation At Break | 700 % |
| Flexural Modulus | 1300 MPa |
| Notched Izod Impact Strength 23 C | 80 J/m |
| Hardness Shore D | 66 |
| Environmental Stress Crack Resistance Escr | >1000 h |
| Thermal Conductivity | 0.42 W/m·K |
| Water Absorption | <0.01 % |
As an accredited Braskem HDPE HB0454 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Braskem HDPE HB0454 is supplied in 25 kg polyethylene-lined paper bags, palletized, stretch-wrapped, and labeled for industrial shipment. |
| Container Loading (20′ FCL) | Braskem HDPE HB0454 resin loaded in a 20′ FCL dry container, palletized, securely stowed, and sealed for ocean shipment. |
| Shipping | Braskem HDPE HB0454 is shipped as non-hazardous polyethylene pellets in 25 kg PE-lined bags, 1,000 kg bulk bags, or bulk trucks/railcars. Store in a cool, dry, well-ventilated area, away from direct sunlight, ignition sources, and moisture. Follow local transport regulations; no special hazardous-materials labeling required. |
| Storage | Store Braskem HDPE HB0454 in a cool, dry, well-ventilated warehouse, away from direct sunlight, heat, ignition sources, and moisture. Keep material in original sealed packaging on pallets, off the floor, to prevent contamination and dust. Avoid excessive stacking and prolonged UV exposure. Use first-in, first-out inventory. Keep away from strong oxidizers and incompatible chemicals. No special conditions required under normal handling. |
| Shelf Life | Braskem HDPE HB0454: indefinite shelf life if stored unopened, cool, dry, away from sunlight, heat, and contaminants. |
Braskem HDPE HB0454, a high-density polyethylene blow molding grade with published nominal melt flow index 0.45 g/10 min at 190 °C/2.16 kg per ASTM D1238-20 and density 0.954 g/cm³ per ASTM D1505, is processed as the continuous phase in UN-certified 3H1 jerricans for Packing Group II and III liquid hazardous materials. Compliance is governed by the UN Model Regulations Chapter 6.1, ADR 6.1.5, and 49 CFR 178.509. The formulation is maintained at 100 parts by weight HB0454, with carbon black masterbatch metered at 2.0–3.0 wt% and clean internal regrind from the same container line dry-blended up to 25 wt%; regrind addition above 25 wt% is not recommended without revalidation of UN drop tests because parison melt strength at the pinch-off decreases and crack propagation from poorly fused tail flash becomes more probable. Blow molding is carried out on accumulator-head shuttle machines with 80–120 mm grooved-feed extruders having L/D ratios of 24:1–30:1, melt temperature 190–215 °C, die head temperature 200–210 °C, mould coolant at 10–20 °C, parison programming to thicken the handle and base pinch zones, and blow air at 6–8 bar. The resulting tight-head and open-head jerricans are produced in 10 L, 20 L, 25 L, and 60 L formats and are marked 3H1/Y/ or 3H1/Z/ according to the rated packing group. No pre-drying is required for virgin HB0454, but surface condensation from storage above 60% relative humidity should be removed by a 70 °C hopper dryer for 1 h before extrusion to avoid surface splay on the parison.
In crop protection packaging, the controlling failure mode is environmental stress cracking initiated at label adhesive residues, pinch-off weld lines, or bottom corners exposed to non-ionic surfactants, aromatic solvents, and emulsifiable concentrates. Compliance for this segment is anchored to the UN Model Regulations Chapter 6.1 for Packing Group II and III liquids, FAO/WHO packaging guidance for pesticide containers, and ASTM D1693-15 ESCR testing. Colour masterbatch for UV-stable white or green bottles is limited to 2.0–4.0 wt%; above 4.0 wt% the carrier resin and pigment dispersion can introduce crack-promoting inclusions that reduce ESCR under constant strain. Where the liquid formulation contains xylene, cyclohexanone, or high-load emulsifiable concentrates, the monolayer container is surface-fluorinated post-moulding to reduce solvent permeation and paneling; fluorination is not a compounding additive but is applied at the converter’s specified fluorine concentration. Clean regrind from rejected bottles may be dry-blended up to 15 wt% only after solvent residue analysis because residual active ingredients accelerate stress cracking. Production is performed on long-stroke shuttle or wheel blow molding machines with 60–80 mm extruders, L/D 24:1, melt temperature 200–220 °C, die temperature 205–215 °C, and mould chiller set at 12–18 °C. Parison programming is critical at the handle pinch-off and bottom pinch; a parison wall below 0.9 mm after weld at the pinch-off zone is rejected for hazardous liquids because drop-test failure at −18 °C commonly initiates at that location. Leakproofness is tested per UN 6.1.5.4, and drop tests are conducted at −18 °C for Packing Group II liquids after water filling and closure. Terminal products include 500 mL, 1 L, 5 L, and 10 L monolayer bottles for emulsifiable concentrates, suspension concentrates, water-soluble granules, and adjuvants, with some 20 L farm-pack containers for lower-risk formulations.
Household detergent and personal care bottles made from Braskem HDPE HB0454 are produced in 250 mL to 5 L formats for viscous laundry detergents, shampoo, body wash, hard-surface cleaners, and trigger-spray bodies. Packaging compliance follows EU 94/62/EC Article 11, under which the sum of lead, cadmium, mercury, and hexavalent chromium in packaging may not exceed 100 mg/kg, and US TPCH toxics in packaging requirements. Colour, opacifier, and antistat masterbatch are metered at 1.0–2.0 wt% total; post-consumer recycled HDPE can be introduced up to 30 wt% only when the recyclate stream is odour-tested and melt-filtered at 100–150 µm to remove gels and rigid particles. Production on rotary or linear high-cavity blow molding machines uses melt temperatures of 190–210 °C, die temperatures of 195–205 °C, mould coolant at 10–15 °C, and blow air at 5–7 bar; neck calibration, deflashing, in-line leak detection, and per-cavity drop testing follow the moulding step. The terminal bottle range is monolayer and includes household cleaning product bottles, cosmetic lotion bottles, and trigger-spray bodies, with no barrier layer unless the formula contains oxidising hypochlorite bleach, for which a separate barrier evaluation is required.
For food and beverage applications, HB0454 must be handled under a documented food-contact control programme because the same grade can be used in non-food industrial packaging. Compliance anchors are FDA 21 CFR 177.1520(a)(3)(i) for high-density polyethylene in contact with food, EU Regulation (EU) No 10/2011 Annex I with an overall migration limit of 10 mg/dm² or 60 mg/kg under Article 12, and China GB 4806.7-2016 for food-contact HDPE. The resin is run at 100 wt% virgin HB0454 with 1.0–2.0 wt% colour masterbatch only if the carrier polymer and pigments are independently food-contact cleared; post-consumer recyclate is excluded from direct food-contact layers unless national authorisation supports a closed-loop recycling process. Extrusion blow molding for 200 mL to 2 L bottles is executed on clean shuttle machines with stainless steel contact surfaces, melt temperatures of 200–215 °C, die temperatures of 205–215 °C, mould coolant at 15–25 °C, and mechanical or hot-knife deflashing to minimise particulate generation. Pinch-off thickness at the base and handle must be controlled by parison programming and wall-thickness mapping; converters validate weld-line integrity by ASTM D1693-15 after fill-simulant exposure because published data for this specific configuration is limited. The monolayer package is suitable for aqueous and dry goods but not for high-barrier oxygen-sensitive beverages unless a barrier layer is added. Terminal products include food bottles for table sauces, vinegar, edible oil, measured squeeze bottles, and dry powder containers; closures are moulded separately from HDPE or suitable PP.
Pharmaceutical and nutraceutical packaging lines running Braskem HDPE HB0454 are configured to control particulate contamination and extractables rather than to maximise output. Compliance relies on USP <661.1> and <661.2>, Ph. Eur. 3.1.3, FDA 21 CFR 177.1520, and ICH Q3D for elemental impurities where the container contributes trace metals. The polymer is processed without regrind in cleanroom blow molding; colour masterbatch at 0.5–2.0 wt% is permitted only after USP biological reactivity and EU Regulation (EU) No 10/2011 documentation are reviewed. Extrusion blow molding is executed on 60 mm single-screw extruders with a 24:1 L/D ratio, melt temperature 195–210 °C, die temperature 200–210 °C, and mould cooling at 12–18 °C; closed-loop parison thickness control minimises weight variation, and trim knives are maintained to limit plastic particulates below the specification limit. Vision inspection and in-line leak detection are applied after deflashing. Typical outputs are 50 mL to 1000 mL round and square bottles for tablets, capsules, liquid oral solutions, and nutritional powders.
In mineral and synthetic lubricant packaging, the main technical conflict is between wall thickness reduction, top-load strength, and permeation of base oils through the polyethylene wall over 12–24 months of shelf life. Compliance standards include EU 94/62/EC for heavy metals, REACH Annex XVII, and the UN Model Regulations 3H1 packaging type where the filled package is classified for transport; distribution simulation is validated under ASTM D4169-22 and drop tests under ISTA 3A or UN 6.1.5.3. Carbon black or colour masterbatch is metered at 2.0–4.0 wt%; external slip and antistatic additives are avoided because they reduce label and print adhesion on fluorinated surfaces. Offline or inline surface fluorination is applied to reduce hydrocarbon permeation; the fluorine content in the treated surface is process-specific and is validated by Fourier transform infrared spectroscopy or X-ray photoelectron spectroscopy rather than by a single polymer addition ratio. Containers are blow molded on accumulator-head machines with 70–100 mm extruders, L/D 24:1–30:1, melt temperature 200–220 °C, die temperature 205–215 °C, mould coolant at 10–15 °C, and parison programming with thicker walls at the lower pinch-off and handle. After trimming, fluorination reactors operate at specified temperatures and dilution ratios; over-fluorination produces a dark yellow surface and poor adhesion of silk-screen ink. Top-load testing on 1 L and 4 L bottles after oven ageing at 60 °C for 96 h is used to detect neck and shoulder deformation; published data for this specific configuration is limited, so converters must correlate field trials with ASTM D2659-16 column crush and ASTM D4169-22 vibration. Typical products are 1 L, 4 L, 5 L, and 20 L bottles and jugs for engine oil, hydraulic oil, gear oil, and coolant where transport classification permits monolayer HDPE.
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Braskem HDPE HB0454 is a high-density polyethylene intended for extrusion blow molding of rigid containers and industrial hollow bodies. Under ASTM D792, the nominal density is 0.954 g/cm³; under ASTM D1238 at 190 °C and 21.6 kg, the high-load melt index is 4.5 g/10 min. This flow value places the grade in the high-molecular-weight blow molding segment, where melt strength is sufficient to stabilize a parison over the drop lengths required for containers from 1 L through approximately 30 L. The standard additive package does not contain intentional slip or antiblock agents, which preserves surface integrity in post-mold printing and in-mold labeling. Surface moisture from condensation, rather than bulk hygroscopicity, is the main precondition for drying; storage below 60 % relative humidity is normally adequate.
The values in Table 1 are representative catalogue values and are not batch-release specifications. Test specimens are conditioned at 23 ± 2 °C and 50 ± 5 % relative humidity in accordance with ASTM D618. Resin properties are generally measured on compression-molded plaques rather than on blow molded bottles; the latter contain orientation and thickness gradients that cannot be duplicated in a flat plaque. Consequently, container performance values such as top-load strength should be verified by ASTM D2659 on the actual finished container.
| Property | Standard | Nominal value |
|---|---|---|
| High-load melt index, 190 °C/21.6 kg | ASTM D1238 | 4.5 g/10 min |
| Density | ASTM D792 | 0.954 g/cm³ |
| Tensile strength at yield, 50 mm/min | ASTM D638 | 24 MPa |
| Elongation at break, 50 mm/min | ASTM D638 | >600 % |
| Flexural modulus, 1 % secant | ASTM D790 | 1000 MPa |
| Durometer hardness, Shore D, 15 s | ASTM D2240 | 64 |
| Vicat softening point, 10 N, 50 °C/h | ASTM D1525 | 126 °C |
These properties are not equally sensitive to processing conditions. Density is relatively insensitive to extrusion temperature but shifts with cooling rate in thick sections; rapid cooling of a 5 mm wall can depress density by 0.001–0.002 g/cm³ compared with slow cooling. High-load melt index is sensitive to residence time and shear history; repeated extrusion of regrind can raise the measured value as molecular weight reduction occurs. Because the standard 2.16 kg melt index is not commonly listed for HB0454, processors should not enter the 4.5 g/10 min value into injection molding or thin-wall extrusion flow models. The value is measured under a high-load condition and correlates with flow in blow molding accumulators, but it is not a direct viscosity. Capillary rheometry at 190 °C and shear rates from 10 s⁻¹ to 1000 s⁻¹ is required for die pressure drop calculations and flow simulation.
Blow molded containers produced from HB0454 are evaluated for environmental stress crack resistance under ASTM D1693, drop impact under ASTM D2463, and top-load under ASTM D2659. When intended for hazardous materials packaging, the finished container must be tested under 49 CFR Part 178, including 49 CFR 178.603 for drop and 49 CFR 178.604 for leakproofness. Food-contact suitability is generally assessed under 21 CFR 177.1520 for olefin polymers, with the specific condition and extractive limits confirmed on the producer’s current regulatory letter. Pharmaceutical and personal care use requires additional evaluation under USP 〈661.1〉 for the finished packaging system.
Die head temperature is the dominant variable governing parison sag and die swell in extrusion blow molding. Raising the head zone from 190 °C to 210 °C reduces melt viscosity and increases gravitational sag, particularly in interrupted extrusion and accumulator-head machines with long parison drop lengths. Die swell values for HDPE within the 4–5 g/10 min HLMI band are commonly reported between 30 % and 50 % depending on die land length, die entry angle, and shear rate; a fixed die with a land-length-to-gap ratio below 20:1 tends to produce higher swell than a longer land. On production equipment, the operator should adjust parison programming but not use head temperature as a surrogate for die gap adjustment, because thermal degradation begins to accelerate above 220 °C and can generate gel particles and black specks in the bottle wall. Melt fracture at high screw speeds is machine-specific; it appears as sharkskin on the parison surface and requires reducing screw speed, increasing the die head temperature within the acceptable range, or polishing the die land.
Extruder barrel zones should be set from 170 °C to 210 °C, with the feed throat water-cooled at 30–50 °C to prevent pellet bridging. A barrier screw with an L/D ratio of 24:1 to 32:1 and a compression ratio of 3:1 to 4:1 is standard for this product class. Screen packs of 20/40/60 mesh can increase backpressure and improve melt homogeneity, but pressure increases must be monitored against the extruder maximum. In accumulator-head tooling, die gaps are commonly set between 1 mm and 3 mm depending on container size and desired wall distribution. Mold cooling with water at 10–30 °C is recommended for aluminum and beryllium-copper molds; a 1.5 mm wall in a 15 °C water-cooled aluminum mold can solidify in approximately 8–12 s, although published data for this specific configuration is limited. Actual cycle time must be established on the production mold because heat transfer is controlled by contact pressure, mold separation, and cooling channel placement.
Although HB0454 is not hygroscopic, pellets stored in outdoor silos and brought into a heated mezzanine can condense surface moisture. At blow molding temperatures, surface moisture produces splay and internal bubbles rather than hydrolysis; predrying at 80 °C for 2 h is sufficient when condensation has occurred. Regrind from uncontaminated flash and tails can be returned to the process at 25 % or higher after plant validation, with the high-load melt index checked by ASTM D1238 to ensure the value remains within the established upper control limit. Contaminated flake, especially from agrochemical packaging, must not be dry-blended into HB0454 without a dedicated washing, drying, and devolatilization sequence.
Against a high-molecular-weight HDPE blow molding grade with an HLMI of 1.5–2.5 g/10 min, HB0454 typically produces lower extrusion backpressure and can be processed at a lower melt temperature on the same tooling. The trade-off is a shorter parison hang time before sag becomes unacceptable; thus the grade is usually preferred for fast-cycle continuous-extrusion shuttle machines rather than very large accumulator-head drums. Against an HDPE with density 0.960 g/cm³, the density of 0.954 g/cm³ usually corresponds to lower flexural modulus and greater environmental stress crack resistance, although direct comparison requires specimens of identical thickness and processing history. The higher-density grade may provide roughly 100–150 MPa greater flexural modulus, measured by ASTM D790, but can fail environmental stress crack resistance earlier under ASTM D1693 in an Igepal environment. Compared with a medium-molecular-weight HDPE having a melt index of 0.30 g/10 min under 2.16 kg, HB0454 reduces backpressure in accumulator-head machines while maintaining sufficient parison melt strength for small and medium containers. It is not a direct substitute for injection molding grades, which typically have melt flow rates of 6–20 g/10 min under 2.16 kg, nor for HDPE pipe grades, which require significantly higher resistance to slow crack growth and long-term hydrostatic strength under ISO 9080.
Outdoor storage of HB0454 pellets should be limited and protected from direct sunlight because the standard grade does not contain UV stabilizers unless otherwise specified in the producer datasheet. Avoid blending with polypropylene or nylon in monolayer blow molding of containers without a dedicated tie-layer and screw design, because interfacial delamination and parison curl occur. At shutdown, purge with a lower-viscosity HDPE or purging compound to reduce carbon deposits in the die head and minimize black speck transfer to the next production run.
