| HS Code | 766353 |
| Density | 0.952 g/cm³ |
| Melt Index | 0.2 g/10 min (190°C/2.16 kg) |
| Tensile Strength At Yield | 26 MPa |
| Tensile Strength At Break | 30 MPa |
| Elongation At Break | 600% |
| Flexural Modulus | 1200 MPa |
| Vicat Softening Temperature | 127°C |
| Heat Deflection Temperature | 70°C at 0.45 MPa |
| Hardness Shore D | 65 |
| Environmental Stress Crack Resistance | >1000 h |
As an accredited Braskem HDPE 002J factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Braskem HDPE 002J is packaged in 25 kg polyethylene bags, with 40 bags per pallet, totaling 1,000 kg per pallet. |
| Container Loading (20′ FCL) | Braskem HDPE 002J, 25 kg bags palletized, loaded into a 20′ FCL container, stretch-wrapped and secured for ocean transport. |
| Shipping | Braskem HDPE 002J is a non-hazardous high-density polyethylene resin, typically shipped in 25 kg bags, octabins, or bulk containers under HS code 3901.20. Store dry, away from heat, moisture, and direct sunlight. No special dangerous goods transport classification applies. |
| Storage | Store Braskem HDPE 002J in a cool, dry, well-ventilated area, away from direct sunlight, heat, sparks, and strong oxidizers. Keep containers closed to prevent moisture, dust, and contamination. Protect bags from tearing and stacking damage; store palletized off the floor. Avoid prolonged UV exposure. Maintain normal ambient temperatures and observe good housekeeping and fire precautions. Do not store outdoors unprotected. |
| Shelf Life | Shelf life is 24 months when stored in original packaging, in a cool, dry, well-ventilated area away from direct sunlight. |
High-molecular-weight HDPE 002J enters the blown-film line as a low-melt-index material that must be processed through a grooved-feed extruder rather than a smooth-bore hopper; the screw L/D ratio is normally specified at 30:1 or higher, and barrel temperature profiles are biased to keep the melt between 190 °C and 220 °C at the die. In high-strength T-shirt bag production the die gap is set from 1.2 mm to 2.0 mm because the high-molecular-weight tail raises die head pressure and stabilizes the bubble only when the land is sufficiently narrow. Blow-up ratio is maintained in the 3:1 to 5:1 band, with a frost-line height of 8 to 10 die diameters, and the collapsing frame is positioned after a dual-lip air ring that delivers a cooling-air velocity of 15–25 m/s against the bubble surface. Film thickness is normally reduced to 8–12 µm without sacrificing the dart impact required by automated packing lines; the test standard applied is ASTM D1709 or ISO 7765-1. Compliance for non-food T-shirt bags is governed by Directive 94/62/EC and REACH Annex XVII; the sum of Pb, Cd, Hg and Cr(VI) must remain below 100 mg/kg, and no polycyclic aromatic hydrocarbon is deliberately introduced. The base resin is supplied with a polymerization stabilizer package, but a processing aid or fluoropolymer-based PPA is only added if bubble instability or die-lip build-up is observed at production scale. Terminal products are thin-gauge loop bags and bin liners with a machine-direction tensile profile sufficient for dense loading of household and retail waste streams.
For extrusion blow molding of HDPE 002J into 5 L to 60 L jerrycans and tight-head containers, an accumulator-head machine is preferred over a continuous shuttle press because the parison must be dropped in 8–15 s without necking; the melt-temperature window is held between 180 °C and 210 °C, and the mold temperature is set from 10 °C to 20 °C to control post-mold shrinkage. The die gap is typically set 20–30% narrower than the final parison wall thickness because the high-molecular-weight fraction generates significant die swell at low shear rates. Regrind addition is capped at 15 wt% because excessive recycled material raises the MFR beyond the 0.10 g/10 min threshold and shortens the parison hang time; the melt-flow ratio is checked before each hopper blend using ASTM D1238 condition 190 °C/21.6 kg. Hazardous-goods containers are tested under UN Chapter 6.1 drop, stack and leakproofness protocols, and the converter must maintain a batch record connecting the finished jerrycan to the certificate of approval. Published direct data for HDPE 002J on continuous shuttle machines is limited; the described operating window is derived from accumulator-head production. Terminal components are extrusion-blow-molded jerrycans for agricultural chemicals, lubricants and industrial concentrates, with a wall-thickness distribution that must not fall below 0.8 mm at the shoulder weld.
Food-contact film and deli-wrap applications convert HDPE 002J only after confirmation that the olefin polymer falls within the positive list of FDA 21 CFR 177.1520. The resin is supplied without slip or antiblock at the polymerization stage, so the processor introduces a pre-dispersed masterbatch at 0.5–2.0 wt% if the film is destined for high-speed form-fill-seal lines; erucamide-based slip and synthetic silica antiblock are pre-dispersed at 20–40 wt% active loading in a compatible LDPE or LLDPE carrier to avoid the dispersion defects that occur when neat waxes are dry-blended into the hopper. Overall migration testing under EU Regulation 10/2011 requires a limiting value of 10 mg/dm² using food simulants appropriate to the final contact temperature; converters must also verify that dual-use additives are listed in the Union list of authorised substances and that no mycotoxin-promoting surface abrasion develops on the sealing jaw. The blown-film line for food-contact deli wrap uses a die temperature of 190–210 °C, a die gap of 1.0–1.5 mm and a blow-up ratio of 2.5:1 to 4:1; the air ring is operated with a chilled-air inlet at 10–15 °C to lower the frost-line temperature and reduce film haze. End products are freezer-safe deli wraps, produce bags and bread bags with a thickness range from 10 µm to 25 µm, each requiring a certificate of compliance that references 21 CFR 177.1520 paragraph (c) specifications.
| Conversion route | Regulatory instrument or standard | Critical limit or test designation |
|---|---|---|
| Non-food T-shirt bags and liners | Directive 94/62/EC | Sum of Pb, Cd, Hg, Cr(VI) < 100 mg/kg |
| Food-contact film | EU Regulation 10/2011 | Overall migration < 10 mg/dm²; EN 1186-1 |
| Food-contact film | FDA 21 CFR 177.1520 | Olefin polymer paragraph (c) specifications |
| Blow-molded jerrycans | UN Model Regulations Chapter 6.1 | Drop, stack and leakproofness protocols |
| Masterbatch carrier | FDA 21 CFR 177.1520 | Migration testing in final article |
| Closed-loop regrind | Directive 94/62/EC | Heavy-metal sum limit 100 mg/kg |
When masterbatch producers select HDPE 002J as the carrier for carbon black and UV stabilizer concentrates, they exploit the same low-MFR rheology that complicates film extrusion, because higher shear stress during twin-screw dispersion breaks agglomerates. In this configuration, carbon black loading is typically 30–50 wt%, hindered amine light stabilizer loading is 20–30 wt%, and phenolic antioxidant loading is 10–15 wt%; the carrier resin is charged first into the hopper and the additive is side-fed downstream after the melt seal to prevent dusting and stabilize barrel fill. A co-rotating twin-screw extruder with L/D 44:1 and screw speed of 400–600 min⁻¹ is operated at a specific energy input of 0.15–0.25 kWh/kg, while barrel temperatures are set from 190 °C to 220 °C and the die plate is held at 200–210 °C to avoid strand drool. The pellet is let down at 2–6 wt% in the final film or blow-molding formulation, which keeps the overall migration below the EU Regulation 10/2011 10 mg/dm² limit only if the carrier resin itself meets FDA 21 CFR 177.1520. The terminal product is a dust-free masterbatch pellet that supplies opacity, UV screening and processing stability in agricultural films and outdoor containers without altering the base polymer concentration beyond the specified let-down ratio.
In three-layer heavy-duty sack coextrusion, HDPE 002J is placed in the core layer at 60–70 wt%, while the skin layers are LLDPE or LDPE at 15–20 wt% each and a tie resin is added at 5–10 wt% only when the skin polymer lacks sufficient interfacial adhesion. The melt-temperature profile is held at 215–230 °C at the spiral mandrel die to match the viscosity of the core and the skin layers; a mismatch greater than 30% in apparent motor-load pressure triggers interfacial instability visible as wavy layer lines on the sac wall. Die gap is optimized at 2.0–2.4 mm for heavy-gauge sacks, and the blow-up ratio is limited to 2:1 to 3:1 because the core layer carries the load-bearing orientation imparted by the high-molecular-weight HDPE. Compliance for industrial sacks used for mineral fillers, resins and dry chemicals is governed by Directive 94/62/EC heavy-metal limits and by REACH restricted-substance declarations, while food-contact versions require migration testing under EU Regulation 10/2011 or FDA 21 CFR 177.1520. Terminal products are heavy-duty shipping sacks, woven-bag liners and bulk packaging that must survive a 1.5 m drop test after exposure to -20 °C for 24 h without spline cracking.
Closed-loop regranulation of HDPE 002J post-industrial film scrap reintroduces the material into industrial liner extrusion at 20–25 wt%, but the converter must first dry the fluff to below 200 ppm moisture at 80 °C for 2 h when the scrap has been stored at relative humidity above 60%. The melt-flow shift after one cycle is limited to less than 10% from the virgin value when measured by ASTM D1238; if the shift exceeds that value, the regrind is downgauged to non-load-bearing sleeve film or blocked from food-contact use. Extrusion of recycled content uses a single-screw extruder fitted with a continuous screen changer and a 100-mesh filter pack to remove char and gel particles above 150 µm. Stabilizer addition during regranulation is limited to 0.1–0.3 wt% of a phenolic-phosphite blend to prevent a second oxidation peak in the processing window; excessive restabilization raises the total price without improving shelf life and can shift the overall migration profile of the final liner. Heavy-metal audits are conducted according to Directive 94/62/EC and the converter’s XRF screening; the packaging sum limit of 100 mg/kg for Pb, Cd, Hg and Cr(VI) is applied to the recycled fraction. Terminal products are industrial liners, can liners and collation-shrink-grade sleeves for the construction and mining sectors, where the end-use specification is defined by the maximum filling temperature and the pallet-load compression test rather than by aesthetic surface quality.
Competitive Braskem HDPE 002J prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8618136850665 or mail to admin@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8618136850665
Email: admin@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Braskem HDPE 002J is a high-molecular-weight high-density polyethylene resin used in extrusion blow molding for rigid containers in which environmental stress crack resistance and parison melt strength control field failure rates. The grade carries a nominal melt flow rate of 0.20 g/10 min at 190 °C/2.16 kg under ASTM D1238 and a nominal density of 0.942 g/cm³ under ASTM D792. The density places the material in the HDPE range above 0.940 g/cm³ but below high-stiffness HDPE grades that reach 0.955 g/cm³ or higher. The melt flow rate indicates a high average molecular weight, which defines processing behavior in continuous extrusion blow molding.
On shuttle blow molders used for containers up to 5 L, the low melt flow rate reduces parison sag during mold transfer and permits longer hang times than grades with melt flow rates of 0.45 g/10 min or 1.0 g/10 min. Machine observations from lines using screw diameters between 60 mm and 90 mm and L/D ratios of 24:1 to 30:1 indicate that a flat-to-reverse temperature profile from feed to die, with head temperatures of 195 °C to 205 °C, keeps melt temperature below 210 °C and avoids unmelts at high throughput. Published data for exact screw-speed limits on every barrel configuration is limited; however, the melt strength advantage of a 0.20 g/10 min resin relative to a 0.45 g/10 min grade is observable in longer parison hang times and reduced diameter swell fluctuation.
Rheologically, the 0.20 g/10 min melt flow rate corresponds to higher molecular weight and broader molecular weight distribution than grades with melt flow rates above 1.0 g/10 min. Higher molecular weight increases chain entanglement density, which raises elongational viscosity at low extension rates and delays parison drawdown. In extrusion blow molding, this allows the parison to be extruded downward and held for mold closing without excessive thinning at the top. However, it also increases shear viscosity, requiring higher extruder torque and more careful screw design. The material can be processed on single-screw extruders with barrier screws and grooved feed sections; general-purpose screws with short compression lengths may cause melt-temperature override and gel formation.
A barrel profile of 170 °C, 190 °C, 200 °C, and 205 °C from feed to die is a typical starting point, with the die head held between 195 °C and 205 °C. The processing window is narrow: if die temperature falls below 185 °C, surface shark skin and melt fracture may appear on the parison; if melt temperature rises above 220 °C, thermo-oxidative degradation can reduce molecular weight and ESCR. A melt-temperature tolerance of approximately ±5 °C around 200 °C is often used on multicavity shuttle lines. Closed-loop melt-temperature control and pressure transducers upstream of the die are therefore more informative than barrel set-point temperature alone.
Die swell for this high-molecular-weight HDPE is typically greater than for a 0.45 g/10 min grade, so parison programming and die gap settings must be adjusted accordingly. If the die gap is too wide, the parison diameter can exceed the mold parting line and cause pinch-off flash; if the die gap is too narrow, shear stress at the die lip can exceed the critical shear stress for melt fracture. Parison sag measurements using a fixed extrusion time and a known shot weight can be used to compare melt strength across lots. A decrease in parison hang length of more than 10% under identical conditions may indicate moisture, regrind variability, or molecular weight degradation.
Mechanical property values reported for Braskem HDPE 002J are summarized in the table below. Tensile yield strength is near 23 MPa when tested at 50 mm/min according to ASTM D638. Elongation at break exceeds 600%, and flexural modulus is in the range of 850 MPa to 900 MPa under ASTM D790. Notched Izod impact at 23 °C is approximately 8 kJ/m² under ASTM D256. Vicat softening temperature is approximately 124 °C under ASTM D1525 with a 10 N load. Shore D hardness is approximately 59 under ASTM D2240. These values position the grade for chemical and personal care containers rather than high-stiffness crates or industrial pails requiring density above 0.950 g/cm³.
| Property | Nominal value | Test method |
|---|---|---|
| Melt flow rate (190 °C/2.16 kg) | 0.20 g/10 min | ASTM D1238 |
| Density | 0.942 g/cm³ | ASTM D792 |
| Tensile yield strength | 23 MPa | ASTM D638 |
| Elongation at break | >600% | ASTM D638 |
| Flexural modulus | 850–900 MPa | ASTM D790 |
| Notched Izod impact (23 °C) | 8 kJ/m² | ASTM D256 |
| Vicat softening temperature (10 N) | 124 °C | ASTM D1525 |
| Shore D hardness | 59 | ASTM D2240 |
Finished container testing should not rely solely on resin property data. Drop impact testing under ASTM D2463 at 23 °C and -20 °C, top-load crush under ASTM D2659, and stress crack resistance under ASTM D1693 on the blown article provide direct evidence of field performance. Wall thickness distribution, especially at the pinch-off and handle gates, can shift failure modes independent of resin tensile properties. A container with a wall thickness variation greater than ±0.15 mm at the sidewall may show premature failure in drop impact even when the resin meets the stated notched Izod value.
Environmental stress crack resistance under ASTM D1693 using 100% Igepal at 50 °C is reported to exceed 1000 h F50. This test result supports use in bottles for household bleach, detergents, and surfactant-based cleaners, where stress cracking can appear at molded-in residual stress points such as the pinch-off and handle gates. The moderate density of 0.942 g/cm³ lowers crystalline fraction relative to higher-density HDPE, which improves ESCR but reduces top-load stiffness and barrier properties. Containers exposed to aggressive liquids should be designed with generous radius transitions at the bottom pinch-off to avoid stress concentration.
The resin is not hygroscopic, but surface moisture from condensation can produce splay and weld-line weakness. If ambient relative humidity exceeds 60%, hopper drying at 80 °C for 2 h is recommended. Regrind addition should be limited to 30% for non-food containers; higher levels may reduce ESCR and disturb parison uniformity. Strong oxidizing agents such as hydrogen peroxide or chlorine bleach concentrates should be tested in the final blown container at 50 °C to 60 °C because oxygen release accelerates thermo-oxidative chain scission. Additives that contain free metal ions can catalyze degradation and should not be combined with the resin unless a stabilizer package has been validated.
Storage of unopened resin should be in dry conditions below 50 °C and away from prolonged UV exposure. Polyethylene can undergo slow photo-oxidation if stored outdoors; even stabilized grades can show surface discoloration and a measurable reduction in ESCR after several months of direct sunlight. Silos and hoppers should be purged with dry air if ambient dew point exceeds 15 °C to prevent condensation on cold pellets.
For food contact applications, the resin may be evaluated under FDA 21 CFR 177.1520, which covers olefin polymers. The converter must conduct end-use compliance testing because the final article, not the neat resin, determines extractive behavior. RoHS Directive 2011/65/EU is relevant only where the HDPE enters electrical and electronic equipment; neat HDPE 002J does not intentionally contain cadmium, lead, mercury, or hexavalent chromium above the maximum concentration values specified in the directive.
Compared with a higher-flow HDPE grade at 0.45 g/10 min, Braskem HDPE 002J shows greater parison hang strength and better ESCR but lower extruder output at a given screw speed. Compared with a higher-density HDPE of 0.955 g/cm³, the 002J grade provides lower flexural modulus and lower top-load strength in exchange for improved stress crack resistance. These differences are not interchangeable in container design: a bottle designed for a 0.955 g/cm³ resin may require increased wall thickness or ribbing if produced from 0.942 g/cm³ 002J. Converters selecting between Braskem HDPE 002J and higher-melt-flow grades should evaluate ASTM D1693 ESCR, ASTM D2463 drop impact, and ASTM D2659 top-load crush on finished containers because published side-by-side comparative data for these specific configurations is limited.
When the product is compared with HDPE grades intended for injection molding, the difference in melt flow rate is the primary processing boundary. An injection molding grade with a melt flow rate of 7 g/10 min to 20 g/10 min can fill thin-wall molds at moderate injection pressure, whereas 002J requires high pressure and is not recommended for thin-wall injection molding. In extrusion blow molding, the same low melt flow is an advantage because it stabilizes the parison. Therefore, the grade should not be substituted into an injection molding tool without a full mold-filling simulation and trial.
On shuttle blow molders, the parison is transferred horizontally after extrusion. For a 0.20 g/10 min HDPE, melt strength is high, but the parison can still sag if the shot size is large or the mold close time exceeds 8 s. Continuous extrusion machines with single or dual parison heads benefit from the grade's high hang strength, but screw speed must be matched to the mold cycle. If screw speed is too low, residence time in the barrel can exceed 8 min, leading to gel formation and black specks; if screw speed is too high, shear heating can push melt temperature above 220 °C. Processing settings should be established using recorded melt temperature at the die, not barrel set-point alone.
Blow air pressure between 0.6 MPa and 0.8 MPa is commonly used to force the parison against the mold. Mold temperatures between 20 °C and 40 °C provide cooling without creating excessive condensation in humid plants. Cooling time scales with wall thickness; thicker handle regions and pinch-off zones can retain heat and require extended blow time or post-cooling. Shrinkage after demolding is higher in the pinch-off area due to residual orientation and local cooling gradients. Dimensional inspection should delay at least 24 h after molding because HDPE crystallinity continues to develop over time. Clamp force can be estimated from parting line area and blow air pressure; for a parting line area of 0.2 m² and air pressure of 0.7 MPa, the theoretical mold-opening force is 140 kN, and actual clamp capacity should exceed this value by a safety factor of 1.2 to 1.5.
The following processing parameters are typical starting points for shuttle blow molders processing Braskem HDPE 002J. They should be adjusted with actual melt temperature and container weight control data.
| Parameter | Typical starting range | Control note |
|---|---|---|
| Barrel temperature profile | 170–205 °C | Flat-to-reverse from feed to die |
| Die head temperature | 195–205 °C | Maintain melt temperature below 220 °C |
| Blow air pressure | 0.6–0.8 MPa | Calibrate against wall thickness |
| Mold temperature | 20–40 °C | Higher for gloss, lower for cycle time |
| Regrind level | 0–30% | Keep moisture below 0.10% |
Container weight control is a primary production metric. Short-term weight variation should remain within ±2% of target; larger variation indicates parison programming instability, feed throat obstruction, or screw wear. Screw wear in the compression zone can reduce melt quality and increase the amount of unmolten material that reaches the die, leading to gel-like defects in the parison. Replacing the screw and barrel when clearance exceeds the manufacturer's tolerance is more effective than increasing set temperatures to compensate for wear.
