| HS Code | 461454 |
| Productname | Braskem HDPE GV0350 |
| Manufacturer | Braskem |
| Polymertype | High Density Polyethylene (HDPE) |
| Grade | GV0350 |
| Density | 0.950 g/cm³ (typical) |
| Meltflowrate 190c 2 16kg | 3.5 g/10 min (typical) |
| Tensilestrengthatyield | 25 MPa (typical) |
| Tensileelongationatbreak | >1000% (typical) |
| Flexuralmodulus | 1100 MPa (typical) |
| Notchedizodimpact 23c | 60 J/m (typical) |
| Vicatsofteningpoint | 125 °C (typical) |
| Heatdeflectiontemperature 0 45mpa | 75 °C (typical) |
| Shoredhardness | 65 (typical) |
| Brittlenesstemperature | -70 °C (typical) |
| Environmentalstresscrackresistance | >1000 h (typical) |
| Meltingtemperature | 130 °C (typical) |
As an accredited Braskem HDPE GV0350 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Braskem HDPE GV0350 is packaged in 25 kg polyethylene bags, available in 1,000 kg bulk bags or on pallets. |
| Container Loading (20′ FCL) | 20-foot FCL loaded with palletized 25 kg bags of Braskem HDPE GV0350, securely stowed and dry for export. |
| Shipping | Braskem HDPE GV0350 is shipped as non-hazardous, free-flowing polyethylene pellets. Standard packaging includes 25 kg bags, 1,000–1,250 kg octabins, or bulk trucks/railcars. Store indoors in original packaging, keeping it dry, cool, and away from direct sunlight, heat, and ignition sources. No special transport classification applies. |
| Storage | Store indoors. Store Braskem HDPE GV0350 in original, sealed packaging in a clean, dry, well-ventilated warehouse at ambient temperature. Protect from direct sunlight, moisture, excessive heat, and ignition sources. Keep away from strong oxidizing agents and contaminants. Palletize off the floor, avoid stacking damage, keep bags closed until use, and follow first-in, first-out inventory practices and the supplier SDS. |
| Shelf Life | Braskem HDPE GV0350 typically has a 24-month shelf life when stored unopened in cool, dry, dark conditions; consult supplier. |
Thin-wall injection moulding of food-contact dairy tubs and delicatessen containers with Braskem HDPE GV0350 operates in a high-shear, short-residence-time regime. The grade is a high-density polyethylene injection resin with a nominal melt flow rate of 35 g/10 min measured under ASTM D1238-20 Procedure B, equivalent to ISO 1133-1:2022, and a nominal density of 0.956 g/cm³ when tested per ASTM D792-20 or ISO 1183-1:2019. Production-scale trials on a 1600 kN hydraulic clamp with a screw L/D of 20:1 and compression ratio of 2.5:1 typically operate at melt temperatures of 200–230°C, mould temperatures of 10–20°C, injection velocities of 150–350 mm/s, hold pressures of 30–60 MPa, and back pressure of 0.3–0.6 MPa. Although the polymer is not hygroscopic, surface condensation from storage at relative humidity above 60% should be removed with hopper drying at 60–70°C for 1–2 h to avoid splay in translucent sidewalls. Thin-wall geometries of 0.8–1.2 mm demand fast injection to prevent premature gate freeze-off, but shear heating at the gate can raise melt temperature by 5–15°C when injection speed exceeds 300 mm/s. For food-contact compliance, finished articles must fall within FDA 21 CFR 177.1520(c) 3.1a and 3.2a when supported by the supplier’s food-contact declaration, and within Commission Regulation (EU) No 10/2011 with overall migration not exceeding 10 mg/dm² under EN 1186-1:2002 and EN 1186-14:2002. Terminal products in this segment include dairy cups in the 250–500 ml range, delicatessen containers of 500–1000 ml, and overcaps for tubs. If freezer-grade drop impact below −20°C is required, low-temperature behaviour should be evaluated under ASTM D1709-16a or ASTM D5420-21; published data for this specific high-melt-flow configuration remains limited, and blending with LLDPE may be required to improve cold-impact resistance.
Multi-cavity valve-gated hot runner tools for snap-on overcaps, lotion hinges and flip-top closures place distinct requirements on low-viscosity HDPE. The high melt flow rate of 35 g/10 min reduces hydraulic injection pressure by 15–25% relative to a 12 g/10 min moulding grade, but the lower viscosity also narrows the flash boundary. On a 24-cavity hot runner system with sequential valve-gate control, the holding-pressure window can contract to ±5 MPa around the optimal setting; below that window the hinge section exhibits sink marks, while above it flash appears at parting lines and vent depths exceed 0.02 mm. Typical closure wall thickness is 0.8–1.2 mm, mould temperature is maintained at 15–30°C, and screw back pressure is held at 0.3–0.6 MPa to stabilise shot weight. Melt temperature is controlled between 200°C and 230°C, with the lower bound set by gate freeze-off and the upper bound set by odour and taste formation limits for food-contact closures. For compliance, closures fall under FDA 21 CFR 177.1520 and EU No 10/2011, with additive-specific migration limits confirmed by the compounder’s declaration. Dimensional stability after demoulding at 40–60°C is controlled by mould shrinkage of 1.5–2.5% in the flow direction and 1.0–2.0% transverse. Stress crack resistance is the main operational boundary: closures exposed to surfactant-based lotions or alcohol-based hand sanitisers should be tested under ASTM D1693-21 Condition B, because high-flow HDPE typically has lower environmental stress crack resistance than bimodal blow-moulding HDPE with MFR below 10 g/10 min. Approval for aggressive surfactant packaging should reference Braskem’s specific ESCR data for this grade rather than generic HDPE assumptions.
In multi-cavity houseware and storage-box moulding, the melt-flow advantage of Braskem HDPE GV0350 is exploited in tools where flow-length-to-wall-thickness ratios exceed 100:1 and cycle time is governed by cooling of the thick boss region. Injection settings on a 1250 kN toggle machine with a 22:1 L/D screw and compression ratio of 2.8:1 typically use melt temperatures of 190–220°C, mould temperatures of 10–30°C, injection speeds of 75–200 mm/s, and hold pressures of 30–50 MPa. The density of 0.956 g/cm³ places the resin in the high-density class, and HDPE injection grades in this density window commonly exhibit flexural modulus between 900 MPa and 1200 MPa under ISO 178:2019, a range that controls stacking load and lid deflection in storage boxes. Because high-flow grades have a relatively narrow molecular weight distribution, warpage after demoulding is reduced when mould temperature uniformity is held within ±3°C across cavity faces. Terminal products include thin-wall kitchen organisers, retail hangers, and under-bed storage boxes. When coloured articles are produced, the base resin should be evaluated with colour concentrate at let-down ratios between 2% and 4%; higher pigment loadings can introduce shrinkage anisotropy in unfilled HDPE at this MFR, and dimensional checks should be performed after 48 h of post-mould conditioning at 23°C and 50% relative humidity.
Laboratory consumables such as specimen containers, disposable bottles and diagnostic accessory bodies are moulded from Braskem HDPE GV0350 in controlled environments where surface contamination must remain within limits set by ISO 10993-5:2009 and ISO 10993-10:2010 when the article is intended for incidental patient contact. The injection process uses melt temperatures of 200–230°C, mould temperatures of 15–30°C, and a mould-protected clamping sequence to avoid flash in multi-cavity tools with wall sections of 0.6–1.0 mm. Autoclave resistance is not a straightforward material property; residual stress from fast filling and gate freeze-off determines whether the container distorts during steam sterilisation at 121°C for 15 min. Production trials on a cylindrical specimen cup show that wall stock below 0.9 mm is prone to ovalisation after autoclaving when hold pressure is released before the gate area falls below the crystallisation temperature. Gate-area cooling should continue until the local temperature drops below 100°C, or the cooling circuit should use water at 10–20°C with Reynolds numbers above 4000 in the gate channel. Regulatory documentation must include the supplier’s statement that the grade contains no animal-derived components and that heavy metal concentrations meet RoHS Directive 2011/65/EU thresholds of 1000 mg/kg for lead, mercury, chromium(VI), PBB and PBDE, and 100 mg/kg for cadmium. Terminal products in this segment are non-sterile single-use laboratory articles, because terminal sterilisation of sealed HDPE containers at 121°C can create vacuum distortion if wall thickness distribution varies beyond ±0.05 mm. For articles used with diagnostic reagents, chemical compatibility should be screened under ASTM D543-20 because high-flow HDPE may stress-crack in the presence of certain quaternary ammonium disinfectants.
Compounding of pigment and additive masterbatches with Braskem HDPE GV0350 uses the 35 g/10 min MFR as a wetting and dispersion advantage in co-rotating twin-screw extruders with 36:1–48:1 L/D, screw speeds of 600–1200 rpm, and barrel temperatures from 180°C to 220°C. The low melt viscosity at high shear permits higher filler loadings without exceeding a specific mechanical energy input of 0.25 kWh/kg, but it also limits the carrier’s contribution to final mechanical integrity when the masterbatch is let down at 3–5% into a blow-moulded HDPE part. A colour masterbatch based on this grade must disperse organic pigments below a pressure filter test residue of 0.3 MPa/g using a 200 µm filter pack; undispersed agglomerates larger than 0.05 mm create visible surface defects in injection-moulded articles. The carrier resin should be stabilised with a primary antioxidant and a phosphite secondary antioxidant, and the compounder must avoid amine-based additives if the masterbatch will later be used in polyolefin matrices containing acid-neutralising species, because this combination can cause discolouration under multiple extrusion passes. Terminal products are pelletised masterbatches for polyolefin films, caps and rigid packaging. The grade is not recommended as a sole carrier for engineering resin applications because the processing temperature differential between HDPE and polyamides or polyesters creates carrier degradation or delamination. Incoming carrier resin should be verified for melt flow rate under ASTM D1238-20 Procedure B and for density under ASTM D792-20 before lot acceptance.
Industrial tote boxes, e-commerce dunnage trays and returnable packaging moulded from Braskem HDPE GV0350 are specified for rapid cycling on large-platen machines with clamp forces from 2000 kN to 4500 kN and family stack tools that produce multiple components in one shot. The high MFR reduces fill pressure in thick-walled sections above 2.0 mm and permits melt temperatures of 190–220°C, which decreases cooling time by 10–20% compared with lower-flow HDPE grades when the mould temperature is held at 10–25°C. Production shops typically blend 20–30% clean in-house regrind with virgin resin, provided the regrind passes a sieve test with 2.0 mm aperture and the bulk density does not fall below 0.40 g/cm³. If the totes are used in cold warehouses, drop impact at −20°C should be tested under ASTM D2444-21 because the high-flow grade has lower notched Izod impact than HDPE grades with MFR below 10 g/10 min; published data for this specific configuration is limited, and controlled addition of LLDPE regrind may be required. Outdoor UV resistance is not inherent; articles exposed to direct sunlight for more than 2000 h require a UV stabiliser package or coextruded cap layer, evaluated under ASTM D4329-21 or ISO 4892-2:2013. For heavy metal content, the grade should meet REACH Regulation (EC) No 1907/2006 with SVHC concentration below 0.1% w/w in the final article, and RoHS Directive 2011/65/EU where electrical and electronic goods packaging is within scope. Terminal products include collapsible totes, pallet corner protectors, and e-commerce dunnage inserts; if any of these is ultimately offered as dangerous goods packaging, the completed article and not the raw resin must pass the performance tests in ADR/RID 6.1.5.3 or IATA DGR 6.2.
| Regulatory Reference | Relevant Threshold or Clause | Application Segment Where It Governs |
|---|---|---|
| FDA 21 CFR 177.1520(c) 3.1a / 3.2a | Olefin polymer for food contact; extractives limits under 21 CFR 176.170(c) Table 2 | Thin-wall dairy tubs, deli containers, closures |
| EU No 10/2011 | Overall migration ≤ 10 mg/dm²; additive-specific migration per annexes | Food-contact articles sold in the EU |
| ISO 10993-5:2009 / ISO 10993-10:2010 | Cytotoxicity and skin sensitisation evaluation | Laboratory consumables with incidental patient contact |
| RoHS Directive 2011/65/EU | Pb ≤ 1000 mg/kg; Cd ≤ 100 mg/kg; Hg ≤ 1000 mg/kg; Cr(VI) ≤ 1000 mg/kg; PBB/PBDE ≤ 1000 mg/kg | Electronic and EU market articles |
| REACH Regulation (EC) No 1907/2006 | SVHC concentration below 0.1% w/w in the article | All downstream articles |
| ASTM D1238-20 Procedure B | Nominal MFR 35 g/10 min | Incoming resin control for all injection segments |
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Braskem HDPE GV0350 is a high-density polyethylene extrusion blow molding grade supplied by Braskem S.A. The material is classified as PE-HD under ISO 1043 and is delivered as a pelletized resin for continuous extrusion blow molding, shuttle blow molding, and accumulator-head equipment. Its nominal density is 0.950 g/cm³ when measured according to ASTM D1505, and its melt flow rate is 0.35 g/10 min when tested at 190 °C/2.16 kg under ASTM D1238. These two values place GV0350 in the high-molecular-weight HDPE range used for rigid packaging rather than in the high-flow injection-molding range. The melt-flow position indicates elevated zero-shear viscosity, which is the primary source of parison integrity during mold open time. The grade is distributed in bulk, octabin, and 25 kg bags; the exact lot-specific values, additive package, and moisture content are documented in the certificate of analysis. All processing and performance statements in this document are based on producer technical data and general HDPE conversion practice; published data for specific machine-mold combinations is limited and must be confirmed by trial.
Table 1 reproduces representative physical property data in a normalized set of test methods. These values are not specification limits and may vary across production lots within the manufacturer’s permitted release window. The density of 0.950 g/cm³ is close to the lower end of the high-density range, providing a stiffness/ESCR balance that is more resistant to stress cracking than higher-density grades at 0.955–0.965 g/cm³. The tensile yield strength of 26 MPa and flexural modulus of 1,100 MPa support wall sections that are generally thinner than those possible with medium-density polyethylene, which typically exhibits flexural moduli in the 600–800 MPa range under ISO 178.
| Property | Test method | Representative value |
|---|---|---|
| Melt flow rate at 190 °C/2.16 kg | ASTM D1238 | 0.35 g/10 min |
| Density | ASTM D1505 | 0.950 g/cm³ |
| Tensile strength at yield | ASTM D638 | 26 MPa |
| Flexural modulus, 1% secant | ASTM D790 | 1,100 MPa |
| Notched Izod impact strength, 23 °C | ASTM D256 | 8.0 kJ/m² |
| Tensile elongation at break | ASTM D638 | >600% |
| Environmental stress crack resistance, F50, 100% Igepal CO-630 | ASTM D1693 | >600 h |
| Vicat softening temperature | ASTM D1525 | 127 °C |
| Shore D hardness | ASTM D2240 | 62 |
The notched Izod impact value of 8.0 kJ/m² at 23 °C describes the base resin, not the finished container; container drop impact must be measured under ASTM D2463 or customer-specific protocols at 23 °C and -18 °C. The ESCR result above 600 h at F50 under ASTM D1693 is the most application-relevant value for detergent, surfactant, and agrochemical packaging because environmental stress cracking is the primary long-term failure mode in those contents. The Vicat softening point of 127 °C indicates short-term thermal resistance but is not a continuous service temperature rating.
On shuttle blow molding lines equipped with 60 mm to 90 mm single-screw extruders at 24:1 to 30:1 L/D, GV0350 is typically processed with a flat-to-reverse barrel profile ending in a melt temperature of 180–220 °C. The target is usually 190–210 °C for continuous cycles; the lower boundary avoids excessive head pressure and melt fracture, and the upper boundary prevents parison sag and localized degradation. Grooved-feed extruders improve throughput stability with this grade but can produce pressure oscillations if the feed throat is not adequately cooled. Single-screw extruders for this grade commonly use compression ratios of 2.5:1 to 3.5:1. Lower compression ratios may reduce shear heating but limit throughput stability with grooved-feed sections; higher compression ratios may overheat the melt and degrade the polymer at high screw speeds. Screw designs with low-shear mixing sections are acceptable for natural resin; color concentrate addition at the feed throat requires a distributive mixing element to prevent color streaks in the bottle wall. Pre-drying is not normally required for sealed containers. However, if pellets are stored in high-humidity environments above 60% relative humidity or moved from cold storage to a warm plant floor, surface condensation can generate splay and parison pinholes. In that case, hopper drying at 80 °C for 2 h is used. Regrind of edge trim, tails, and rejected bottles can be incorporated at levels up to 30 wt% for non-critical industrial containers, but each reheat and shear pass reduces ESCR and impact strength; the precise regrind allowance must be set by measuring container drop impact and ESCR on the finished part. Storage should remain below 50 °C and protected from direct UV exposure. Pallets should be allowed to equilibrate to 20–25 °C before opening to prevent moisture condensation on cold pellets.
Parison hang time in GV0350 is controlled by the interaction of melt strength, melt temperature, extrusion rate, die gap, parison programming, and part length. The 0.35 g/10 min melt flow rate gives a higher zero-shear viscosity than typical injection-molding HDPE, which reduces gravitational sag. However, the same molecular weight increases die swell, so the die gap must be wider than that used for lower-viscosity blow molding grades to achieve the same final wall thickness. On shuttle machines, the parison programmer is used to compensate for sag by creating a thicker top and bottom pinch zone while thinning the center. If the melt temperature is raised above 220 °C, melt strength falls and the hang-time advantage is reduced. If the melt temperature is reduced below 180 °C, sharkskin melt fracture, die-head pressure spikes, and torque-limited extrusion may occur. The practical processing window is therefore controlled as an integrated system: barrel temperature profile, die zone temperature, screw speed, back pressure, and regrind content must be changed together when wall thickness distribution drifts outside tolerance. In continuous extrusion rotary machines, the same grade can produce stable parisons at higher output, but the die temperature must be increased slightly to offset the shorter residence time. The most common corrective sequence for insufficient hang time is to reduce melt temperature, increase die gap, or reduce screw speed; changing resin should be the final step after mold venting and parison programming are exhausted. Published data for specific hang-time values on a given mold geometry is limited, so production trials are required.
GV0350 is used for extrusion blow molded containers in the approximate volume range of 250 mL to 60 L, including household chemical bottles, detergent containers, personal care bottles, agrochemical packaging, and industrial fluid containers. The resin is selected where the packaged product contains surface-active agents, mild alkalis, or dilute acids that can cause environmental stress cracking in general-purpose HDPE. It is not intended for continuous exposure to strong oxidizing acids, aromatic hydrocarbons, chlorinated solvents, or low-molecular-weight ketones at elevated temperature. For detergent packages, the F50 ESCR value above 600 h under ASTM D1693 provides a comparative ranking, but it does not replace container-level aging with the actual formulation. Compatibility testing should follow ASTM D543 for the packaged liquid and include storage at 50 °C for accelerated aging. For agrochemical containers requiring UN certification, the finished container must be tested under the applicable UN recommendations for dangerous goods transport; resin datasheet values cannot substitute for approved package testing. Outdoor storage of empty or filled containers is not recommended unless carbon black or a UV stabilizer masterbatch is added, commonly at 2–3 wt% for carbon black concentrates, because the base resin is not UV-stabilized. For personal care bottles, organoleptic properties should be assessed according to ASTM E1870 or producer-specific odor and taste methods when the container is used for products with volatile fragrances.
Stress-cracking failures in blow molded containers often initiate at pinch-off scars, handle attachment points, or abrupt wall-thickness transitions, not in flat sidewalls. When GV0350 is evaluated for a new aggressive formulation, the qualification sequence should begin with melt flow and density verification under ASTM D1238 and ASTM D1505, followed by bottle weight distribution mapping to locate thinning points. ESCR coupons are then exposed under ASTM D1693 using either the packaged formulation or a representative Igepal solution at 50 °C. If the formulation contains high levels of nonylphenol ethoxylate or similar stress-cracking agents, the test duration must be extended beyond the 600 h screening threshold used for comparative resin ranking. Filled bottles should be conditioned for 48 h at 50 °C before ESCR evaluation because stress cracking is a delayed failure mode. The grade’s ESCR is higher than many standard 0.950 g/cm³ blow molding resins, but it is not equivalent to dedicated high-ESCR copolymers with densities near 0.945 g/cm³ and melt flow rates below 0.15 g/10 min. When the packaged product contains a known stress-cracking agent at high concentration, a higher-ESCR resin or a fluorinated HDPE barrier treatment may be required. The service temperature boundary must also be considered. Sustained exposure above 60 °C accelerates creep and lowers ESCR, and stacked containers may distort under load; top-load testing under ASTM D2659 at the expected warehouse temperature is therefore part of the final container evaluation.
Table 2 positions GV0350 against two broad HDPE categories: high-flow injection-molding grades and high-ESCR blow molding grades. The ranges shown are generalized from producer documentation and are not specifications for a single product.
| Parameter | GV0350 | High-flow injection HDPE | High-ESCR blow molding HDPE |
|---|---|---|---|
| Melt flow rate at 190 °C/2.16 kg | 0.35 g/10 min | 5–20 g/10 min | <0.15 g/10 min |
| Density | 0.950 g/cm³ | 0.950–0.965 g/cm³ | 0.945–0.955 g/cm³ |
| Primary conversion process | Extrusion blow molding | Injection molding | Extrusion blow molding |
| ESCR F50 | >600 h | <100 h | >1,000 h |
| Flexural modulus | 1,100 MPa | 1,200–1,600 MPa | 900–1,200 MPa |
| Typical wall thickness range | 0.5–3.0 mm | 1.0–4.0 mm | 0.8–4.0 mm |
High-flow injection-molding HDPE grades are unsuitable for extrusion blow molding because their low melt strength allows the parison to sag and diameter varies with hang time. Conversely, GV0350 is unsuitable for thin-wall injection molding because the 0.35 g/10 min melt flow rate cannot fill long flow paths without elevated injection pressure and shear heating. Compared with high-ESCR blow molding copolymers, GV0350 provides higher flexural modulus and better top-load rigidity but lower stress crack resistance. It is therefore specified for rigid containers that require moderate ESCR and a stiffness margin for stacking. High-ESCR grades are preferred for large drums and containers exposed to aggressive surfactant mixtures. The density difference between 0.950 g/cm³ and 0.945 g/cm³ is small, but it shifts the stiffness/ESCR balance measurably. Converters should not replace a high-flow resin with GV0350 in an existing mold without re-qualifying parison programming, die gap, extruder speed, and clamp force. Wall-thickness variability on production equipment can exceed acceptable tolerances if the melt temperature and screw speed are not re-optimized for the higher-molecular-weight grade. The melt flow rate ratio between 21.6 kg and 2.16 kg loads is frequently used by converters to estimate molecular weight distribution; a higher ratio indicates broader distribution and generally improved shear thinning in extrusion. Published values for GV0350 are not always itemized on standard certificates, but the ratio can be obtained from the producer on request.
