| HS Code | 350622 |
| Density | 0.960 g/cm³ |
| Melt Flow Rate | 10 g/10 min (190°C/2.16 kg) |
| Tensile Strength At Yield | 31 MPa |
| Elongation At Break | 1000% |
| Flexural Modulus | 1400 MPa |
| Notched Izod Impact | 40 J/m |
| Vicat Softening Temperature | 128°C |
| Heat Deflection Temperature | 80°C at 0.45 MPa |
| Shore D Hardness | 68 |
| Melting Temperature | 135°C |
| Environmental Stress Crack Resistance | 10 h |
| Mold Shrinkage | 1.5-3.0% |
| Water Absorption | 0.01% |
| Bulk Density | 0.60 g/cm³ |
| Thermal Conductivity | 0.50 W/m·K |
| Coefficient Of Linear Thermal Expansion | 1.2E-4 1/°C |
As an accredited Braskem HDPE 100K factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Braskem HDPE 100K comes in 25 kg polyethylene bags, palletized and stretch-wrapped for secure transport and storage. |
| Container Loading (20′ FCL) | Braskem HDPE 100K, bagged 25 kg, palletized, shrink-wrapped, loaded into a 20-foot FCL container, securely stowed, dry, ambient conditions. |
| Shipping | Braskem HDPE 100K is a non-hazardous polyethylene resin, not regulated for transport by DOT, IMDG, IATA, ADR/RID, or TDG. It ships in sealed 25 kg bags, palletized and stretch-wrapped, or in bulk trucks/railcars. Store cool, dry, away from heat, sunlight, moisture, and oxidizers. Keep containers closed; avoid contamination. |
| Storage | Store Braskem HDPE 100K in a cool, dry, well-ventilated warehouse, away from direct sunlight, heat, flames, and strong oxidizing agents. Keep material in original sealed bags or containers on pallets, off the floor, to prevent moisture and contamination. Avoid excessive stacking. Maintain clean handling practices; no special temperature control is required under normal conditions. Store away from incompatible materials. |
| Shelf Life | Braskem HDPE 100K typically has a two-year shelf life when stored in original packaging, away from direct sunlight, heat, and moisture. |
Processing decisions for Braskem HDPE 100K begin from the melt-state classification: a high-molecular-mass high-density polyethylene intended for extrusion blow molding and sheet extrusion where environmental stress crack resistance and parison stability together determine machine selection. When the certificate of analysis reports melt flow rate under ISO 1133-1:2022 at 190°C/5 kg and density under ISO 1183-1:2019, the downstream scenarios below are selected on the basis of actual commercial conversion routes—extrusion blow molding, sheet extrusion, coextrusion blow molding, and heavy-part blow molding—rather than injection molding, which is not used for this high-melt-strength grade because flow length and mould filling pressure become limiting in thin-wall applications. The data in each section identify the governing regulatory text, the practical formulation window, the machine configuration, and the terminal article; industrial users must verify grade-specific values against Braskem’s certificate of analysis and regulatory status letter.
| Scenario | Primary standard or directive | Test method designation | Critical metric |
|---|---|---|---|
| UN-certified jerricans and tight-head drums | ADR/RID 6.1, 49 CFR 178.503, UN Model Regulations Chapter 6.1 | ISO 16101:2004, ASTM D1693-21 | No leakage, no failure after drop, stack, hydraulic, and chemical compatibility procedures |
| Sheet-extruded thermoformed dunnage | ISO 1183-1:2019, ASTM D638-14, ASTM D790-17 | ASTM D638-14, ASTM D790-17, ASTM D1693-21 | Tensile yield stress, flexural modulus, environmental stress crack resistance after washdown exposure |
| Automotive fuel tank bodies | FMVSS 301, EPA 40 CFR Part 86, SAE J1681 | SAE J1681, gravimetric permeation, vehicle SHED | Impact integrity after crash test; resting evaporative loss within SHED limits |
| Lubricating oil and transmission-fluid bottles | ASTM D1693-21, ASTM D638-14 | ASTM D1693-21 condition B | Stress crack failure time at 40–50°C in oil-containing environment |
| IBC inner bottles | ADR/RID 6.5, 49 CFR 178.245, UN Model Regulations Chapter 6.5 | ISO 16101:2004, bottom-lift, drop, leakproofness, hydraulic tests | Structural integrity after bottom-lift and drop procedures; no leakage after chemical compatibility immersion |
| Potable and process water tanks | NSF/ANSI/CAN 61, EU Regulation No 10/2011 | NSF/ANSI/CAN 61 extractives; organoleptic evaluation | Extractives below accepted migration limits; no adverse taste or odour at test temperature |
In 5–60 L high-payload transport containers, HDPE 100K is processed on reciprocating-screw shuttle or single-station accumulator machines with 24:1–30:1 L/D barrier screws and grooved feed sections. Melt temperature is maintained at 190–210°C; higher temperatures above 215°C lower melt strength enough to cause parison draw-down in 60 L tight-head drums where parison length exceeds 0.8 m. Blow air pressure is set at 0.6–0.8 MPa, mould temperature between 10°C and 20°C, and cycle times fall between 45 s and 120 s depending on container mass and wall thickness. The compound uses HDPE 100K at 100 phr as base resin, clean post-industrial regrind at 5–20 phr, carbon black masterbatch at 1.5–3.0 phr, and hindered phenolic antioxidant masterbatch at 0.05–0.20 phr. No external mould release agent is added because prolonged migration from the outer surface during transport can reduce weld-line strength at the bottom pinch-off; this is an operational boundary observed in UN drop tests when regrind exceeds 25 phr or when overloaded masterbatch formulations leave plate-out on the die lip. Compliance for dangerous-goods packaging requires the finished container to be qualified by a UN certification test series under ADR/RID Chapter 6.1 or 49 CFR 178.503, including stack load, leakproofness, hydraulic pressure, and drop tests, while material-level stress crack resistance is evaluated according to ASTM D1693-21 condition B or ISO 16770:2019 at 50°C. End products include 20 L, 25 L, and 60 L jerrycans and tight-head drums for solvents, agrochemical concentrates, and petroleum additives.
Edge draw-down and gauge variation in sheet extrusion of high-molecular-mass HDPE are controlled by die-lip geometry and downstream roll-stack temperature rather than by increasing melt temperature alone. HDPE 100K is extruded with a 30:1 L/D single-screw extruder fitted with a flat die having a 2–6 mm adjustable lip gap, downstream three-roll stack temperatures of 45–70°C, and melt temperatures of 205–225°C. Formulation for returnable industrial dunnage and materials-handling trays includes HDPE 100K at 100 phr, clean regrind at 5–15 phr, UV-stabilised colour masterbatch at 2–4 phr, and processing stabiliser masterbatch at 0.1–0.5 phr. Twin-sheet thermoforming on rotary machines with plug-assisted forming uses heater banks set at 350–400°C surface temperature, forming pressure 0.35–0.55 MPa, and cycle times from 60 s to 120 s. Compliance for load-bearing returnable packaging is tested under ASTM D638-14 for tensile yield, ASTM D790-17 for flexural modulus, and ASTM D1693-21 for environmental stress crack resistance where the trays are exposed to condensation and detergent washdown. End products are twin-sheet thermoformed trays, separator boards, and returnable dunnage used in automotive parts handling and machining-cell component transport.
Automotive fuel tank blow molding with HDPE 100K is constrained by the interaction between parison sag and post-extrusion swell, and by the barrier requirement that bare HDPE cannot satisfy under current evaporative emission limits. On accumulator-head machines producing 40–90 L tank bodies, the parison is programmed to vary wall thickness from 4.5 mm to 8.0 mm; melt temperature is kept in a ±5°C window around 195°C for the HDPE skin layers because deviations above 205°C induce parison draw-down at the pinch-off zone and reduce the depth of the kiss-off areas. A six-layer coextrusion die combines HDPE 100K outer and inner layers, adhesive tie layers, an EVOH barrier layer, and regrind; the EVOH layer is maintained at 1.5–3.0 wt% of total wall thickness, with a processing window of ±2°C at the EVOH extruder because thermal excursions cause gel formation and interlaminar instability. Formulation is based on 100 phr HDPE 100K in the skin layers, carbon black masterbatch at 2.0–2.5 phr for UV and conductive properties, antioxidant masterbatch at 0.1–0.3 phr, and clean regrind at 10–25 phr in the regrind layer; tie-layer and EVOH are proportioned by total wall thickness rather than by mass. Sulfur-bearing or highly acidic additive packages are avoided in the regrind layer because their migration to the tie-layer interface reduces peel adhesion under crash impact. Permeation is measured according to SAE J1681 or internal gravimetric test methods, with validation against EPA 40 CFR Part 86 SHED limits and FMVSS 301 impact integrity. The terminal products are 40 L to 90 L automotive fuel tank bodies, filler necks, and vapour-system shells intended for coextruded or fluorination-treated configurations. Published data for this specific HDPE 100K configuration in barrier coextrusion is limited; the above proportions represent production-scale practice for high-molecular-weight HDPE tank grades and should be verified against Braskem technical service data.
At 1–5 L lubricating oil container outputs on double- or six-station shuttle machines, HDPE 100K is formulated at 100 phr base resin, clean regrind at 10–25 phr, colour masterbatch at 2–5 phr, and antistatic masterbatch at 0.3–1.0 phr. Melt temperatures are held at 180–205°C and blow pressure at 0.7–0.9 MPa; cycle times for 1 L bottles on shuttle presses fall between 8 s and 15 s. Environmental stress crack resistance is tested under ASTM D1693-21 condition B because the product must withstand oil-filled storage at 40–50°C without leakage. The finished containers are 1 L, 4 L, and 5 L engine-oil and transmission-fluid bottles, typically with moulded-in handles and calibrated neck finishes.
Production of 1,000–1,250 L intermediate bulk container inner bottles from HDPE 100K occurs on single-station accumulator-head machines with large-diameter divergent dies; parison length exceeds 2.0 m, and the parison programmer divides the wall into 10–20 thickness steps to compensate for sag and swell, producing final wall thicknesses from 3.0 mm to 5.5 mm. Melt temperature is set between 190°C and 205°C; blow air pressure is 0.5–0.7 MPa, mould temperature is 8–15°C, and cycle time ranges from 5 min to 10 min. The compound uses HDPE 100K at 100 phr, clean regrind limited to 5–10 phr because higher recycled ratios reduce melt strength and increase the incidence of pinholes at the bottom fold, UV stabiliser masterbatch at 0.5–1.5 phr, and carbon black masterbatch at 0.5–2.0 phr where outdoor or corrosive storage is anticipated. The finished inner bottle is placed inside a steel or composite outer cage; UN certification for IBCs under ADR/RID Chapter 6.5 and 49 CFR 178.245 includes bottom-lift, stack, leakproofness, hydraulic, and drop tests, plus chemical compatibility testing under ISO 16101:2004. End products are 1,000 L and 1,250 L IBC inner bottles for liquid chemicals, water-soluble fertiliser concentrates, and industrial detergent intermediates.
Water contact applications shift the regulatory burden from dangerous-goods testing to potable-water extractives and organoleptic thresholds. HDPE 100K is extruded on large blow molding machines for 200–1,500 L closed-top tanks with wall thicknesses from 5 mm to 12 mm; the formulation is HDPE 100K at 100 phr, clean regrind at 5–10 phr, blue or black masterbatch at 1–2 phr, and UV stabiliser masterbatch at 0.3–0.5 phr. Melt temperature is 190–205°C, blow pressure 0.6–0.8 MPa, and mould cooling at 10–20°C. End products are vertical and horizontal potable water storage tanks, rainwater collection tanks, and process water reservoirs, with material compliance assessed under NSF/ANSI/CAN 61 for potable water contact and EU Regulation No 10/2011 where applicable to food-contact use.
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Braskem HDPE 100K is a high-flow high-density polyethylene injection molding grade. The grade designation 100K identifies a material with a nominal melt flow rate of 10 g/10 min determined according to ASTM D1238 at 190 °C under 2.16 kg, and a nominal density of 0.958 g/cm³ determined according to ASTM D1505. These properties position the resin in the high-flow segment of HDPE injection molding materials, where short cycle times, thin-wall filling, and fine detail replication are primary processing requirements. The product is intended for injection molded caps, closures, thin-wall packaging, housewares, toys, and general-purpose articles that do not require long-term environmental stress crack resistance or pressure-pipe classification.
Standardized characterization of the grade is performed using the methods listed in the following matrix. Certificate-of-analysis parameters typically include density, melt flow rate, tensile yield strength, elongation at break, flexural modulus, notched Izod impact strength, Vicat softening temperature, heat deflection temperature, environmental stress crack resistance, and mold shrinkage.
| Property | Method | Unit |
|---|---|---|
| Density | ASTM D1505 | g/cm³ |
| Melt flow rate | ASTM D1238 / ISO 1133-1:2022 | g/10 min |
| Tensile strength at yield | ASTM D638 | MPa |
| Elongation at break | ASTM D638 | % |
| Flexural modulus | ASTM D790 | MPa |
| Notched Izod impact strength | ASTM D256 | J/m or kJ/m² |
| Vicat softening temperature | ASTM D1525 | °C |
| Heat deflection temperature | ASTM D648 | °C |
| Environmental stress crack resistance | ASTM D1693 | h |
| Mold shrinkage | ASTM D955 | % |
Supplier datasheets for HDPE injection grades of this MFR class commonly report tensile yield strength in the 25–28 MPa range, elongation at break above 100 %, flexural modulus in the 1100–1300 MPa range, and notched Izod impact values in the 2–4 kJ/m² range. These values are class envelopes rather than lot-specific guarantees. Exact certificate-of-analysis values for HDPE 100K must be used for process simulation, tool design, and part qualification. At a nominal density of 0.958 g/cm³, the crystalline fraction is high relative to linear low-density polyethylene, contributing to elevated stiffness, surface hardness, and chemical resistance. Rapid crystallization produces relatively short demolding times but also increases shrinkage anisotropy in flow-oriented sections.
The melt is processed on reciprocating-screw injection molding machines equipped with general-purpose polyolefin screws having a length-to-diameter ratio of 20:1–25:1 and a compression ratio between 2.5:1 and 3.5:1. Barrel temperature profiles typically begin at 180 °C in the feed zone and increase to 230–250 °C at the nozzle. Melt temperature must remain below 280 °C; excursions above this threshold accelerate oxidative chain scission, reduce melt strength, and increase odor, yellowing, and plate-out on mold surfaces. Mold temperatures from 15 °C to 40 °C are standard for rapid skin solidification and cycle-time control. Mold temperatures up to 60 °C are used when weld-line strength, surface gloss, or dimensional stability outweigh the cycle-time penalty.
High-density polyethylene is essentially non-hygroscopic, so drying is not mandatory under normal indoor storage conditions. If pellets are exposed to relative humidity above 60 % or temperature swings that produce condensation, surface moisture can generate splay and surface defects. Pre-drying at 80 °C for 1–2 h in a desiccant or hot-air dryer is sufficient. The high melt flow of HDPE 100K permits low filling pressure, but injection velocity must be balanced against jetting and melt fracture. Thin-wall tools with flow-length-to-thickness ratios above 200:1 require higher injection velocities, optimized gate placement, and careful melt-temperature control to prevent flow hesitation and premature gate freeze-off.
Hold pressure and gate seal time are critical process variables. Gate seal time for cold-runner gates below 1 mm diameter can be as short as 0.5–2 s depending on mold and melt temperatures. If hold pressure is removed before gate seal, underpacking produces sink marks, voids, and cavity-to-cavity weight variation. Overpacking increases part mass, extends cycle time, and amplifies warpage through non-uniform shrinkage. Mold shrinkage in HDPE injection grades typically ranges from 1.5 % to 2.5 % in the flow direction and 1.0 % to 2.0 % across flow at 3 mm wall thickness, with higher values in thicker sections. Post-mold shrinkage continues as the part crystallizes; full dimensional stabilization may require 24–48 h at ambient temperature or accelerated conditioning.
The following operating boundaries summarize the practical envelope for high-flow HDPE injection molding.
| Parameter | Typical setting | Boundary condition |
|---|---|---|
| Melt temperature | 180–250 °C | Above 280 °C: oxidative degradation |
| Mold temperature | 15–40 °C | Above 60 °C: cycle-time extension; below 10 °C: flow-line defects |
| Drying | 80 °C for 1–2 h when RH > 60 % | Surface moisture produces splay |
| Screw recovery speed | 50–150 rpm for screw diameters 40–80 mm | Excessive shear heating above 280 °C melt temperature damages polymer |
| Regrind addition | Up to 20–30 wt% in non-food, non-appearance parts | Repeated passes reduce ESCR and shift color |
Capillary rheometry according to ISO 11443 or ASTM D3835 provides the viscosity curve required for mold-filling simulation. Published data for grade-specific capillary viscosity of HDPE 100K is limited; however, high-flow HDPE with a 10 g/10 min melt flow rate typically exhibits apparent viscosity below 100 Pa·s at 1000 s⁻¹ and 190 °C, and may fall below 20 Pa·s at 10,000 s⁻¹. This shear-thinning behavior enables filling of thin sections but also increases sensitivity of fill time to melt-temperature variation. Mold-filling simulation should use pressure-dependent viscosity data from the resin supplier, not generic material parameters.
On production-scale machines with shot weights above 100 g, plastication time is generally shorter than cooling time; screw recovery speed should not become the cycle-limiting step. High-flow HDPE compounds generate frictional shear heating, and screw speeds of 150 rpm on larger-diameter screws can cause melt-temperature overshoot. Shot-to-shot stability depends on non-return valve condition; leakage from a worn check ring appears as cushion loss, fill-time drift, and part-weight variation. In high-cavitation hot-runner tools, valve-gate sequencing and runner balancing control fill pressure and reduce weld-line weakness. Weld-line tensile strength in unfilled high-flow HDPE is commonly reduced relative to the parent material; mold-temperature increases and sequential valve gating reduce the severity of weld-line failure. Production-scale failure modes observed with high-flow HDPE injection grades include gate blush, burn marks from air entrapment, splay from surface moisture, and sink marks from premature gate freeze. The most common processing defect is dimensional variation driven by mold temperature fluctuation; uneven cooling-channel layout can generate cavity-to-cavity shrinkage differences exceeding 0.2 % in thin-wall parts.
Comparative positioning of HDPE 100K against other HDPE products is performed through melt flow rate, density, molecular weight distribution, environmental stress crack resistance, and creep response. A blow molding grade with ASTM D1238 melt flow rate below 1 g/10 min has high molecular weight and high melt strength, permitting stable parison formation and large-part blow molding; the same molecular architecture increases extrusion pressure and cooling time. HDPE 100K, with a nominal 10 g/10 min melt flow rate, fills thin-wall cavities at lower injection pressure and with shorter fill time, and it produces better replication of fine mold detail and surface texture. The trade-off appears in ASTM D1693 environmental stress crack resistance testing, where high-flow injection grades are typically below blow molding and pipe-grade HDPE. Lower tie-molecule density in high-flow grades reduces resistance to slow crack growth under stress in the presence of polar liquids, detergents, or surfactants.
The grade is not a pipe resin and does not carry PE100 classification under ISO 12162; it is not intended for pressure pipe service. Compared with lower-MFR injection molding grades, HDPE 100K provides better flow length and shorter cycle but exhibits lower impact strength and lower environmental stress crack resistance. Compared with blow molding grades, it has reduced die swell and parison stability, making it unsuitable for continuous extrusion blow molding. Compared with high-density polyethylene grades designed for film, the molecular weight distribution is narrower and the melt strength is lower, which reduces bubble stability and draw-down consistency. The differentiation is therefore process-specific: the grade is selected when injection molding productivity and thin-wall filling outweigh long-term ESCR and creep resistance. Creep behavior follows the same trend: higher MFR HDPE grades exhibit greater creep compliance under sustained load and should not be used for load-bearing structural components in which long-term deformation controls design.
Food-contact use requires verification against FDA 21 CFR 177.1520 for olefin polymers and EU 10/2011 for plastic food-contact materials, including the overall migration limit of 10 mg/dm² for food simulants. Compliance with REACH and RoHS 2011/65/EU must be documented through the supplier’s regulatory information sheet for the specific lot and packaging configuration. The resin should not be exposed to sustained contact with strong oxidizing acids, aromatic hydrocarbons, or chlorinated solvents; these agents accelerate environmental stress cracking and swell the polymer. Outdoor service without UV stabilization is not recommended for long-term use; carbon black or hindered amine stabilizer masterbatch should be added according to the masterbatch supplier’s dosage range. Post-industrial regrind can be reintroduced within the processing boundaries described, but food-contact applications must confirm that regrind use is permitted under the relevant food-contact rule or notification.
