| HS Code | 486899 |
| Material Type | High-Density Polyethylene (HDPE) |
| Density | 0.94–0.96 g/cm³ |
| Melt Flow Index | 0.2–0.5 g/10 min at 190°C/2.16 kg |
| Tensile Strength At Yield | 22–31 MPa |
| Elongation At Break | 500–1000% |
| Flexural Modulus | 0.8–1.6 GPa |
| Impact Strength | 40–100 kJ/m² |
| Vicat Softening Temperature | 120–130 °C |
| Melting Point | 125–135 °C |
| Hardness | 55–60 Shore D |
| Water Absorption | <0.01% |
| Chemical Resistance | Excellent against acids, bases, and salts |
| Uv Resistance | Good with carbon black stabilization |
| Dielectric Strength | 18–28 kV/mm |
As an accredited Breplast HDPE BRETENE factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Breplast HDPE BRETENE is supplied in 25 kg polyethylene-lined bags, palletized and shrink-wrapped for secure industrial storage and transport. |
| Container Loading (20′ FCL) | Breplast HDPE BRETENE loaded into a 20-foot FCL container, palletized bags, dry conditions, evenly distributed, secured for safe ocean transport. |
| Shipping | Breplast HDPE BRETENE is a non-hazardous thermoplastic supplied as pellets. It ships in 25 kg bags, jumbo bags, or bulk containers by road, rail, sea, or air. Keep dry, cool, and ventilated; protect from UV, moisture, and contamination. No special dangerous goods requirements apply. |
| Storage | Store Breplast HDPE BRETENE in a cool, dry, well-ventilated warehouse away from direct sunlight, heat, sparks, and open flames. Keep original packaging sealed, off the floor on pallets, and prevent moisture, dust, and contamination. Avoid contact with strong oxidizers. Maintain stable temperature, use first-in-first-out stock rotation, do not stack excessively, protect from physical damage and UV exposure, and follow local safety and fire regulations. |
| Shelf Life | Shelf life is typically 24 months when stored in original, unopened packaging in a cool, dry place, away from sunlight. |
In the conversion of Breplast HDPE BRETENE into pressure pipe for buried potable water networks, the dominant process variable is not melt temperature alone but the formation of tie molecules during slow crack growth. The formulation addition window for black pipe production is set by ISO 4427-1:2019 and ISO 4427-2:2019: carbon black masterbatch is added at 2.0–2.5 wt% to maintain final carbon black content between 2.0 wt% and 2.5 wt%, antioxidant masterbatch at 0.2–0.5 wt% when extended hold-up time is anticipated, and internal regrind is limited to 10–15 wt% as a direct substitute for virgin HDPE, with the balance being virgin Breplast HDPE BRETENE. The downstream production process uses a grooved-feed single-screw extruder with an L/D ratio of 30:1–36:1, a barrier screw, and a spiral mandrel die; barrel temperatures are set from 180 °C to 220 °C, with melt temperature at the die held between 210 °C and 230 °C. Vacuum calibration with closed-loop cooling maintains ovality below 0.5 mm at diameters up to 630 mm. Terminal finished product types include potable water distribution pipe from 20 mm to 630 mm outer diameter, gas distribution mains, and mining slurry pipelines. Compliance for potable water contact is anchored to FDA 21 CFR 177.1520, NSF/ANSI/CAN 61, and EU Directive 98/83/EC; long-term hydrostatic strength is assessed under ISO 9080:2022 and classified via ISO 12162:2009. Operational boundaries are explicit: melt temperatures above 240 °C initiate oxidation and reduce the hydrostatic design basis, moisture content above 0.05 wt% generates surface pitting, and amine-based stabilizer formulations are avoided because they interfere with organoleptic water quality testing. On production lines, batch-to-batch viscosity drift alters die-head pressure and wall thickness at the 6 o’clock position; therefore a melt pump is placed between the screen changer and the die on lines producing pipe above 315 mm outer diameter.
Accumulator-head extrusion blow molding of Breplast HDPE BRETENE for UN-rated dangerous goods packaging operates within a narrow melt-flow window because parison sag directly determines wall-thickness distribution. The formulation blend comprises colorant masterbatch at 2.0–4.0 wt%, antistatic masterbatch at 0.5–2.0 wt%, and clean internal regrind at 20–30 wt%, with the balance as virgin Breplast HDPE BRETENE; the regrind fraction is accepted only when its melt-flow rate under ISO 1133-1:2022 differs from virgin by no more than ±15%. The downstream production process uses an accumulator-head blow molding machine with screw L/D 24:1–30:1, 100-point parison programming, die gap 1.5–2.5 mm, melt temperature 180–210 °C, and blow pressure 8–12 bar. Mold temperature is held at 5–20 °C to shorten cycle time without causing condensation defects. Terminal finished product types include UN-certified jerrycans from 5 L to 25 L, 200 L single-trip and returnable tight-head drums, and inner containers for intermediate bulk containers. Industry compliance standards include the UN Recommendations on the Transport of Dangerous Goods, ADR/RID and IMDG package performance testing for stack, drop, leakproofness, and hydraulic pressure; food-contact containers require FDA 21 CFR 177.1520 and European Regulation (EU) 10/2011 with overall migration limits. Shot-to-shot variation in parison length is observed when accumulator head pressure drops during refill; machine control must maintain parison length within ±0.2 mm at the container shoulder. The addition of antistatic masterbatch above 2.0 wt% can reduce interlayer adhesion at pinch-off seams, so seam burst pressure should be verified under the relevant UN drop and leakproof procedure. Regrind above 30 wt% reduces environmental stress crack resistance, silicone-based release agents lower cap-sealing surface energy, and cross-contamination with PVC or PET flakes must be excluded by metal detection and density separation.
When flat-die extrusion lines are configured for high-density polyethylene geomembrane at thicknesses above 1.5 mm, the cooling and embossing stages become the primary determinants of dimensional stability. Breplast HDPE BRETENE in black geomembrane form is compounded with carbon black masterbatch at 2.0–3.0 wt%, antioxidant masterbatch at 0.5–1.0 wt%, hindered amine light stabilizer at 0.2–0.5 wt%, and internal sheet edge trim at 10–20 wt%, with the balance as virgin resin. The downstream production process uses a single-screw extruder with L/D 30:1–36:1, a melt pump, and a flat die with internal deckles; melt temperature is maintained at 210–230 °C, while polished or textured chill rolls run at 60–90 °C to control crystalline orientation and layflat. Thickness is measured online with a traversing gauge and controlled to ±5% across a 5–8 m width; pinhole detection uses a spark tester at 25–35 kV. Terminal finished product types include landfill base and cap liners, mining heap leach pads, canal liners, and secondary containment basins. Industry compliance standards include GRI-GM13 for minimum property requirements, ASTM D1505 for density, ASTM D5596 for carbon black dispersion, ASTM D3895 for oxidative induction time, and EN 13493:2018 for waste containment applications. Table 1 specifies the primary compliance test matrix for a 1.5 mm black HDPE geomembrane.
| Property | Test method | Threshold relevance |
|---|---|---|
| Thickness | ASTM D5199-12 | Minimum 1.5 mm for standard GRI-GM13 liner |
| Density | ASTM D1505-18 | HDPE range 0.940–0.965 g/cm³ |
| Carbon black dispersion | ASTM D5596-03 | Category 1 or 2 allowed |
| Oxidative induction time | ASTM D3895-19 | Standard OIT above 100 min at 200 °C |
| Tensile properties | ASTM D638-14 | Yield strength and elongation per GRI-GM13 |
Sheet tension control after the calender is the most common source of residual stress in geomembrane; tension must be maintained below 1.5 N/mm and roll hardness must be kept uniform across the web. When carbon black dispersion falls below ASTM D5596 Category 1 or 2, the failure appears as surface pimples and reduced tear resistance. Multilayer coextrusion of a white reflective top layer with a black base layer narrows the stabilizer window because the top layer is exposed to higher UV irradiance; published data for this specific configuration is limited and requires site-specific ultraviolet exposure validation.
For returnable logistics crates that must pass cold-drop tests at -20 °C, injection molding of Breplast HDPE BRETENE requires the cavity-filling phase to compensate for high viscosity at fast shear rates. The formulation includes metallocene polyolefin elastomer impact modifier at 2.0–5.0 wt%, nucleating agent at 0.05–0.2 wt%, antistatic masterbatch at 0.5–1.0 wt%, and internal regrind at 20–30 wt%, with the balance as virgin HDPE. The downstream production process is carried out on a reciprocating-screw injection molding machine with L/D 20:1–24:1, clamp force from 800 t to 3000 t, melt temperature 200–260 °C, mold temperature 10–30 °C, injection pressure 80–140 MPa, and back pressure 0.5–1.5 MPa. Gates are positioned to avoid weld lines at handle apertures and fork-entry bearing surfaces. Terminal finished product types include returnable beverage crates, distribution pallets in 1200 mm × 1000 mm footprint, fish and meat crates, and municipal waste containers. Industry compliance standards include EU Packaging and Packaging Waste Directive 94/62/EC, CONEG heavy metal limits, ISO 8611-1:2021 for pallet performance, and FDA 21 CFR 177.1520 for direct food contact crates. Cold-drop performance at -20 °C is heavily influenced by gate location; weld lines at handle apertures or fork entries are notched regions. Molding trials should record peak injection pressure and cushion position, because cushion variation beyond ±2 mm produces inconsistent packing and warpage. If impact modifier is increased above 5 wt%, the flexural modulus of the crate may fall below the limit specified in ISO 8611-1:2021, and pilot tool qualification is required. Regrind above 30 wt% reduces low-temperature impact strength, nucleating agents that interact with certain phthalocyanine pigments require qualification before color matching, and moisture above 0.1 wt% produces silver streaks on load-bearing ribs.
High-draw monofilament lines using Breplast HDPE BRETENE depend on quench temperature stability before orientation. The formulation window for agricultural netting and rope monofilaments contains UV stabilizer masterbatch at 2.0–4.0 wt%, fluoropolymer processing aid at 0.1–0.3 wt%, lubricant-free pigment at 2.0–5.0 wt%, and no more than 10 wt% clean regrind, with the balance as virgin HDPE; higher regrind fractions widen the molecular weight distribution and create filament diameter variation. The downstream production process uses a single-screw extruder with L/D 24:1–30:1, a gear pump, and a multi-hole die; melt enters a water quench bath at 20–40 °C, then passes through a hot water or oven orientation stage at 90–110 °C with a draw ratio of 7:1–10:1, followed by 5–8% relaxation. Terminal finished product types include twisted ropes, agricultural netting, fishing net twine, and artificial turf thatch monofilaments. Industry compliance standards include ISO 1806:2014 for rope physical and mechanical properties, FDA 21 CFR 177.1520 for food-safe mesh used in shellfish aquaculture, and REACH Regulation (EC) 1907/2006 Annex XVII for PAH migration in consumer articles. Quench water temperature drift above ±2 °C creates oval cross-sections; pigment agglomerates above 50 µm block spin packs and lower tensile strength; and low-molecular-weight slip additives are incompatible at draw ratios above 7:1 because migration during orientation reduces interlamellar tie-chain density and causes fibrillation.
Before powder is loaded into the mold, the particle size distribution of Breplast HDPE BRETENE must be confirmed between 150 µm and 500 µm because rotomolding cycle design starts with sintering rate, not with melt flow index. A typical dry blend for vertical storage tanks comprises hindered amine light stabilizer at 0.2–0.5 wt%, antioxidant at 0.1–0.3 wt%, colorant powder at 0.5–2.0 wt%, and regrind at 20–30 wt% from the same powder grade, with the balance as virgin powder. The downstream production process uses a biaxial rotational molding machine with angular ratio 4:1, oven temperature 280–320 °C, mold internal air temperature of 200–230 °C, and cooling initiated only after full sintering; wall thickness is built to 5–12 mm depending on tank volume. Terminal finished product types include vertical storage tanks up to 30 m³, double-wall chemical tanks, agricultural sprayer tanks, and potable water storage tanks. Industry compliance standards include ASTM D1998-21 for upright polyethylene storage tanks, NSF/ANSI/CAN 61 for potable water contact, and FDA 21 CFR 177.1520 for food-contact surfaces. Wall thickness variation is minimized by adjusting the ratio of major to minor axis rotation to 4:1; deviations greater than ±0.1 cause thick rims and thin sidewalls. Regrind particles above 500 µm require longer sintering time and increase surface porosity, while particles below 150 µm can over-sinter and yellow at oven temperatures above 310 °C. Powder stored at ambient relative humidity above 70% requires dehumidified storage to prevent pinholes, peak mold internal air temperature above 230 °C accelerates thermo-oxidative degradation, and cross-blending with fractional melt HDPE of different sintering rate is not recommended without full compatibility testing.
Competitive Breplast HDPE BRETENE 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!
Breplast HDPE BRETENE is identified in the supplier’s product range as an unfilled high-density polyethylene grade. The model designation BRETENE serves as the grade identifier within the Breplast HDPE portfolio and is associated with lot-release data issued by the manufacturer. Published independent data for this specific configuration is limited; therefore, the following ranges represent unfilled HDPE of equivalent density and melt flow rate, not certificate-of-analysis values. Density determined per ISO 1183-1 is typically specified from 0.950 g/cm³ to 0.960 g/cm³. Melt mass flow rate measured at 190 °C under 2.16 kg according to ISO 1133-1:2022 is expected to fall within a grade-dependent interval from 0.3 g/10 min to 8 g/10 min. These two values define the primary processing split among extrusion, blow molding, and injection molding variants and govern downstream tooling decisions.
Characterization of BRETENE-type HDPE requires parallel solid-state and melt-state testing because density alone does not predict processing behavior. Tensile yield stress per ISO 527-2 at 50 mm/min usually ranges from 23 MPa to 30 MPa for HDPE with density near 0.955 g/cm³. Elongation at break commonly exceeds 600% at 23 °C. Flexural modulus measured per ISO 178 at 2 mm/min typically falls between 900 MPa and 1500 MPa. Notched Charpy impact strength per ISO 179-1/1eA is frequently reported from 8 kJ/m² to 15 kJ/m² at room temperature, while low-temperature testing at -40 °C may show a brittle transition. Vicat softening temperature according to ISO 306/A50 generally appears from 120 °C to 130 °C. Environmental stress crack resistance per ASTM D1693 condition B in 100% Igepal CO-630 can exceed 1000 h for high-molecular-weight variants. Table 1 summarizes representative values for unfilled HDPE of comparable density and melt flow rate.
| Property | Standard | Representative range |
|---|---|---|
| Density at 23 °C | ISO 1183-1 | 0.950–0.960 g/cm³ |
| Melt mass flow rate | ISO 1133-1:2022 | 0.3–8 g/10 min |
| Tensile yield stress | ISO 527-2 | 23–30 MPa |
| Elongation at break | ISO 527-2 | >600% |
| Flexural modulus | ISO 178 | 900–1500 MPa |
| Charpy notched impact strength, 23 °C | ISO 179-1/1eA | 8–15 kJ/m² |
| Vicat softening temperature | ISO 306/A50 | 120–130 °C |
| Environmental stress crack resistance | ASTM D1693 condition B | >1000 h |
Processing behavior of BRETENE-type HDPE is evaluated on single-screw extruders with grooved feed sections and barrier screws of 25:1 to 30:1 L/D. A compression ratio of 2.5:1 to 3.5:1 is typical. Barrel temperatures from 180 °C to 220 °C and die-head temperatures from 190 °C to 210 °C are common starting settings for blow molding and sheet extrusion. Mold temperatures of 10 °C to 30 °C are used to stabilize parison dimensions. Pre-drying is generally unnecessary when moisture content is below 0.10%; storage at relative humidity above 60% can introduce surface moisture that produces silver streaks and reduced melt strength. Capillary rheometry per ISO 11443 indicates shear thinning in the apparent shear rate range 10 s⁻¹ to 1000 s⁻¹, with a typical power-law index between 0.4 and 0.6 for unfilled HDPE. On production-scale accumulator blow molding lines, parison sag is controlled by adjusting die gap and melt temperature; excessive die swell requires tooling compensation.
Substitution of linear low-density polyethylene or polypropylene with Breplast HDPE BRETENE is evaluated primarily through flexural modulus and top-load response. Under ISO 12048 top-load testing at 10 mm/min, HDPE containers commonly show higher compressive resistance than LLDPE containers of equal wall thickness because the higher density raises flexural modulus. However, impact resistance at low temperature is lower; notched Charpy values per ISO 179-1/1eA at -40 °C for HDPE may fall below values for LLDPE. Compared with polypropylene, BRETENE-type HDPE presents lower Vicat softening temperature but improved stress crack resistance in detergent and alcohol-based formulations. Blown film die gaps must be widened to approximately 1.5 mm to 2.5 mm for HDPE to tolerate die swell, whereas LLDPE processes with narrower gaps. Published comparative data specific to BRETENE is limited for all end-use geometries.
Environmental stress crack resistance values for high-molecular-weight HDPE measured per ASTM D1693 condition B often exceed 1000 h in 100% Igepal CO-630 at 50 °C. Continuous service temperature in air for unfilled HDPE is generally limited to 65 °C to 80 °C; excursions to 100 °C are permissible only at reduced mechanical load. The resin is not recommended for continuous contact with oxidizing acids, aromatic hydrocarbons, chlorinated solvents, or ketones at elevated temperature because swelling and oxidative degradation reduce tensile strength. At ambient temperature, resistance to dilute acids, alkalis, and aqueous salt solutions is broad, but long-term hydrostatic strength is not equivalent to PE 100 pipe grades classified under ISO 9080. Oxidation induction time per ISO 11357-6 at 200 °C is typically above 20 min for stabilized HDPE, but this value is additive-dependent and must be confirmed for the supplied formulation. Published data for this specific configuration is limited.
Batch-to-batch variation in melt flow rate and moisture content produces measurable differences in extruder back pressure and surface gloss. When regrind content exceeds 20 wt%, gel counts assessed by ASTM D3351 may increase and dart impact consistency may degrade in film applications. The addition of hygroscopic masterbatch carriers such as polyamide-based color concentrates requires pre-drying at 60 °C to 80 °C for 2 h to 4 h. Gravimetric dosing systems with ±1% accuracy are specified to maintain consistent melt flow. Accumulator blow molding lines with clamp force from 20 metric tons to 50 metric tons have shown that parison sag is more severe when barrel temperatures exceed 220 °C or when regrind level exceeds 25 wt%. These processing boundaries are not specific to a single factory but are observed across comparable HDPE production campaigns.
Applications are concentrated in extrusion and blow molding sectors. Blow molded rigid containers for household chemicals, personal care products, and industrial liquids use high-density polyethylene for environmental stress crack resistance and top-load strength. Extruded sheet is thermoformed into trays, dunnage, and inserts. Injection molded caps and closures with higher melt flow variants are processed at melt temperatures from 190 °C to 240 °C and mold temperatures from 20 °C to 40 °C. Structural foam molding with chemical blowing agents at 0.5 wt% to 1.5 wt% is possible but increases mold plate-out. Non-pressure conduit and drainage fittings are processing-validated on extrusion lines where the melt flow rate falls in the extrusion range. In all cases, the precise BRETENE grade selected must be matched to the manufacturing method, because the same family designation may cover several melt flow rate variants.
Melt fracture on BRETENE-type HDPE is controlled by reducing shear stress at the die lip and by maintaining melt temperature above 180 °C. Die land lengths are lengthened to reduce entrance effects; die gaps for blow molding are commonly set between 1.5 mm and 3.0 mm. Parison sag on accumulator machines is minimized by lowering melt temperature and filling the accumulator at controlled speed. In injection molding variants with higher melt flow rates, injection speed and hold pressure are adjusted to reduce jetting and weld-line weakness. Short-shot studies on production equipment reveal that a hold-pressure window of 50 MPa to 80 MPa is normally sufficient for unfilled HDPE parts with wall thickness from 1.5 mm to 3.0 mm. These boundaries are processor-dependent and are not a substitute for mold-flow validation or tool-specific process capability trials.
Compared with wide-specification HDPE and post-consumer recyclate, virgin BRETENE offers tighter melt flow ratio and lower gel counts, but independent comparative data for this specific grade is limited. Unlike PE 100 pipe grades classified under ISO 9080, the resin is not normally assigned a hydrostatic design basis for pressure pipe. Bimodal high-density polyethylene blow molding grades often display higher environmental stress crack resistance and higher stiffness at equivalent density; they also typically carry lower melt flow rates. The choice between BRETENE and bimodal HDPE depends on whether the processing line requires lower back pressure and faster cycle time or maximum stress crack resistance in aggressive detergent packaging. Difference from low-density polyethylene is most evident in moisture vapor transmission, where HDPE provides lower transmission at equal thickness, although the exact value depends on crystallinity and part wall thickness.
Food-contact status for BRETENE-type high-density polyethylene is anchored to FDA 21 CFR 177.1520(c) item 3.1a or 3.2a, depending on the comonomer and additive formulation. In the European Union, Regulation (EU) No 10/2011 Annex I is applied with overall migration testing limited to <10 mg/dm² for the intended contact conditions. REACH (EC) No 1907/2006 requires SVHC content to remain below 0.1% w/w as supplied. The RoHS Directive 2011/65/EU as amended by (EU) 2015/863 sets cadmium at 0.01% and other restricted substances at 0.1% in homogeneous materials. For pharmaceutical packaging, USP <661.1> physicochemical testing is used. The final component must be validated by the converter because thermal degradation and regrind can alter migration behavior. Compliance statements apply only to the supplied virgin pellet and not to modified compounds, masterbatch blends, or post-process recycled content.
| Regulation or standard | Scope | Limit or test designation |
|---|---|---|
| FDA 21 CFR 177.1520(c) | Indirect food additive for olefin polymers | Item 3.1a / 3.2a depending on formulation |
| Regulation (EU) No 10/2011 | Plastic food contact materials | Overall migration <10 mg/dm² |
| REACH (EC) No 1907/2006 | SVHC notification and content | <0.1% w/w per SVHC |
| RoHS 2011/65/EU + (EU) 2015/863 | Restricted substances in homogeneous material | Pb, Hg, Cr VI, PBB, PBDE, DEHP, BBP, DBP, DIBP <0.1%; Cd <0.01% |
| USP <661.1> | Plastic packaging components for pharmaceuticals | Physicochemical testing per monograph |
Warehouse storage conditions influence processing consistency. Ambient storage below 35 °C and relative humidity below 60% is recommended. Silos should be purged to avoid dust accumulation and cross-contamination. Color and additive masterbatches should be pre-dried when they are based on hydrolysable carriers or contain hygroscopic pigments. The base resin can be processed without drying when the moisture content is below 0.10%; if surface moisture is suspected, dehumidified drying at 60 °C to 80 °C for 2 h to 4 h may be applied. Addition of regrind above 25 wt% requires percentage control in gravimetric dosing units to prevent melt flow drift and lot-to-lot viscosity variation. These operational boundaries are established to protect process capability, not to extend the inherent service limits of the material.
