| HS Code | 525553 |
| Density | 0.946 g/cm³ |
| Melt Flow Rate 190 C 2 16 Kg | 13 g/10 min |
| Tensile Modulus | 1300 MPa |
| Tensile Stress At Yield | 27 MPa |
| Tensile Strain At Yield | 9 % |
| Tensile Stress At Break | 30 MPa |
| Tensile Strain At Break | >500 % |
| Charpy Notched Impact Strength 23 C | 5 kJ/m² |
| Charpy Notched Impact Strength 30 C | 3 kJ/m² |
| Vicat Softening Temperature A50 | 75 °C |
| Melting Temperature | 130 °C |
| Thermal Conductivity | 0.4 W/m·K |
| Water Absorption | 0.01 % |
| Volume Resistivity | >1E14 ohm·cm |
| Dielectric Constant | 2.3 |
| Dissipation Factor | 0.0002 |
| Processing Temperature | 200-230 °C |
| Mold Temperature | 20-50 °C |
As an accredited Borealis HDPE HE1346 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Borealis HDPE HE1346 is supplied in 25 kg polyethylene bags, palletised at 1,000 kg per pallet for industrial handling. |
| Container Loading (20′ FCL) | 20′ FCL loaded with palletized 25 kg bags of Borealis HDPE HE1346, stretch-wrapped and secured for ocean transport. |
| Shipping | Borealis HDPE HE1346 is shipped as a non-hazardous high-density polyethylene resin in pellet form. It is not classified as dangerous goods for DOT, IMDG, IATA, or ADR. Transport in original bags, octabins, or bulk containers; keep dry, clean, and away from ignition sources. No UN number or hazard class required. |
| Storage | Store Borealis HDPE HE1346 in a cool, dry, well-ventilated warehouse, away from direct sunlight, heat, flames, ignition sources, and strong oxidizers. Keep bags or containers sealed, clean, and palletized off the floor. Avoid moisture, dust, and contamination; use first-in, first-out rotation. Store indoors, protected from weather and UV radiation. Avoid excessive stacking to prevent package damage. No special ventilation is normally required. |
| Shelf Life | Borealis HDPE HE1346 has a shelf life of 24 months when stored in original packaging, dry, cool, and protected from direct sunlight. |
On fully automated form-fill-seal lines converting 25 kg dry bulk packages, Borealis HE1346 is processed as blown film at a thickness of 25–70 µm through 65–90 mm extruders with 28–30 L/D barrier screws. Bubble stability remains the controlling variable because haul-off above 14 m/min on 400 mm annular dies produces a narrow operating window between frost line height and nip pressure. The grade’s published melt mass-flow rate of 0.13 g/10 min at 190 °C and 2.16 kg under ISO 1133-1 and density of 0.946 g/cm³ under ISO 1183-1 provide high melt strength and sufficient drawdown for thin webs without excessive die lip drool. Melt temperature is typically held at 210–240 °C; values above 245 °C increase gel oxidation and reduce drop impact, while values below 200 °C raise melt pressure above 380 bar on 30D extruders. Frost line height is kept between 380 mm and 420 mm above the die face for 30 µm film at a blow-up ratio of 4.0–4.5. The bubble is collapsed through a wooden slat tower with low-friction rollers; line operators record nip roll pressure and ambient dew point because condensation at RH above 75% causes slip-agent migration that later induces heat-seal jaw contamination.
Release testing for FFS film uses a minimum method matrix before slitting. The matrix includes tensile stress at yield in MD and TD under ISO 527-3 at 500 mm/min, Elmendorf tear under ASTM D1922 on 25 µm specimens, dart drop failure mass under ASTM D1709 Method A, and filled sack drop per ISO 7965-1 on 25 kg charges. Dimensional stability after slitting is checked against ISO 4591 with a thickness tolerance of ±5% across a 1200 mm lay-flat width.
| Property | Test method | Condition | Control purpose on FFS line |
|---|---|---|---|
| Melt mass-flow rate | ISO 1133-1 | 190 °C, 2.16 kg | Raw-material lot consistency |
| Density | ISO 1183-1 | 23 °C | Barrier and stiffness control |
| Tensile stress at yield | ISO 527-3 | 500 mm/min, MD/TD | Slit width stability |
| Elmendorf tear | ASTM D1922 | 25 µm specimen | Sack puncture resistance |
| Dart drop impact | ASTM D1709 Method A | 30 µm film | Fill-line abuse resistance |
| Coefficient of friction | ISO 8295 | 23 °C, 50% RH | FFS form collar friction |
The converted terminal products include 25 kg sacks for polymer granules, mineral fillers, fertilizers, and pet food. Seal integrity is checked on the filling line after jaw dwell, and any lot showing a puckered seal shoulder or film dimpling at the gusset fold is diverted because those defects become drop failures in warehouse stacking.
A speed ceiling of 350 m/min in thin-gauge grocery bag conversion is reached when wicket-punch friction and seal bar fouling become unstable. HE1346 is run with an oleamide slip masterbatch at 1.0–2.0 wt% and a silica antiblock masterbatch at 0.15–0.30 wt% of the total blend. Kinetic coefficient of friction is controlled below 0.25 on the sealant surface when measured per ISO 8295 at 23 °C and 50% RH; above this threshold, stacked bags adhere to the punch plate and double-transfer in automatic baggers. Sealing temperature is set between 150 °C and 175 °C for dwell times of 0.2–0.5 s. The hot-tack range is narrower than for LLDPE, so seal bars must be aligned to within ±0.05 mm to avoid channel leakers. Perforation geometry is set at 1.0 mm depth with a residual tie of 0.3 mm to balance opening force against accidental failures. Film thickness is held at 8–18 µm. The terminal products are wicketed grocery bags, retail checkout bags, and produce bags. Compliance is limited to packaging waste rules under EU Directive 94/62/EC and REACH; these thin retail bags are not intended for direct fatty food contact, so a full EU 10/2011 migration declaration is not required unless a printed surface contacts unpackaged food.
HE1346 is used as the core ply in A-B-C film structures where LLDPE skins provide sealing and abuse resistance and the HDPE core reduces water vapor transmission. The layer ratio is typically 20/40/20 or 25/50/25; the HDPE core weight fraction does not exceed 50% because higher core fractions degrade dart impact and interfere with seal integrity. Coextrusion is performed on lines with 50 mm skin extruders, a 75 mm core extruder, and a 350 mm annular die with a 1.8–2.4 mm die gap. Melt temperatures are held at 220–240 °C for the core and 210–230 °C for skin layers. The bubble is quenched with internal bubble cooling and stabilized at a blow-up ratio of 3.0–3.5. After collapsing, the film is directed to adhesive lamination or extrusion lamination against paper or aluminium. Water vapor transmission rate is measured by ISO 15106-1 at 38 °C and 90% RH; published data for this specific configuration is limited because the final WVTR depends on adhesive type, total laminate gauge, and sealing-layer chemistry. Consequently, converter trials must determine the actual value on the complete laminate. Food contact statements are based on FDA 21 CFR 177.1520 and EU Regulation 10/2011, with overall migration below 10 mg/dm² under Annex I test conditions. Terminal products include dry food pouches, cereal liners, biscuit wrappers, and moisture-sensitive industrial packaging overwrap.
Across frozen food operations where packaged product drops to -40 °C immediately after filling, film produced from HE1346 retains ductility because the density-controlled crystalline phase does not undergo the sharp brittle transition seen in high-crystallinity HDPE grades above 0.960 g/cm³. At 15–25 µm, the film is blown with internal bubble cooling and gauge control of ±3% to prevent thin spots that shatter when ice crystals grow. Slip agents are minimized because they can exude at low temperature and become white deposits; a silica antiblock masterbatch at 0.05–0.10 wt% is used. The frost line is held higher than on ambient packaging lines, typically 420–470 mm, to reduce orientation and preserve low-temperature impact. Frozen poultry, vegetable, and IQF seafood bags fall under FDA 21 CFR 177.1520 for olefin polymers; EU Regulation 10/2011 applies with simulant A at 20 °C for 10 days for frozen food contact compliance. Terminal products include IQF vegetable film, poultry bag liners, and frozen seafood bags.
Production of 60–80 L heavy-duty refuse sacks from HE1346 focuses on Elmendorf tear propagation and dart drop rather than seal strength. Gauge is set at 20–40 µm, with a carbon black masterbatch at 1.5–2.5 wt% for UV resistance and 10–20 wt% post-industrial regrind in the core of three-layer structures. The regrind fraction is limited to 20% because higher levels reduce transverse-direction Elmendorf tear below the threshold for filled sack puncture. Film is blown at a blow-up ratio of 4.0–5.0 with die gaps of 1.2–1.6 mm and melt temperature 220–235 °C. Testing includes EN 13592 for household refuse sack dimensions and drop test, ISO 6383-2 for tear propagation, and ASTM D1709 for dart drop. Sacks are sealed with a star seal or C-fold bottom; seal integrity is checked by inflating to 2.5 kPa for 60 s with no burst. The terminal goods are municipal 60 L sacks, 80 L heavy-duty sacks, and institutional waste bags in 400–1000 mm lay-flat widths. Compliance is declared against EU packaging waste Directive 94/62/EC and REACH; no food contact claim is assigned.
Although bulk industrial liners historically used 100% wide-spec HDPE to avoid environmental stress crack failures, HE1346 is now processed in 70/30 virgin/regrind structures where the minimum liner gauge is held at 80 µm and the regrind fraction is limited to clean internal film trim. Drum liners and disposal bags for construction debris require stress crack resistance under chemical contact; ESCR is monitored per ASTM D1693 using 100% Igepal CO-630 at 50 °C. A lot is not released below 100 h F50 when the liner is intended for mildly aggressive liquids. The film is blown at a 2.0 mm die gap because wider die gaps reduce orientation and improve ESCR, but output is lower; blow-up ratio is kept at 2.5–3.0 to limit transverse stress. Melt temperature is maintained at 210–240 °C to avoid molecular weight degradation that would shorten ESCR. Terminal products include 200 L drum liners, industrial bulk bags, and renovation debris sacks. The liner is not rated for liquid dangerous goods transport; for UN 3H1 jerrican performance, blow-moulded HDPE containers must be used.
For frozen poultry overwrap and bag-in-box poultry portions, HE1346 is formulated with a glycerol ester anti-fog masterbatch at 1.5–3.0 wt% in the inner sealant layer. The additive migrates to the film surface over a 24–72 h conditioning period at ambient temperature; before that period, anti-fog performance is incomplete and condensation may appear as discrete droplets. Surface energy is measured by cotton-swab test inks per ISO 8296; the target after migration is below 38 mN/m to form a continuous water film. The outer layer may contain 0.2–0.5 wt% silica antiblock and 0.1–0.3 wt% slip additive. Film thickness is 20–35 µm, blown at a blow-up ratio of 3.5–4.0 with a 1.4 mm die gap. The anti-fog layer is placed on the inside of the bag by bubble inversion; after sealing at 160–180 °C, the package is passed through a -35 °C blast tunnel. The film must retain seal strength after contact with poultry purge; hot-tack and seal strength are measured per ASTM F1921 on contaminated seal areas. Terminal products include whole-carcass poultry bags and bone-in poultry portion packs. Compliance is under FDA 21 CFR 177.1520 and EU Regulation 10/2011; the anti-fog masterbatch must itself be listed for food contact and must not cause the structure to exceed overall migration of 10 mg/dm² under EU 10/2011 Annex I.
Competitive Borealis HDPE HE1346 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!
Borealis HDPE HE1346 is a high-density polyethylene grade supplied in pellet form for extrusion blow moulding of rigid containers. The material is positioned where wall stiffness, melt strength during parison formation, and dimensional stability at demoulding are primary processing requirements. Under the current manufacturer’s published datasheet, nominal density is 0.946 g/cm³ and melt mass-flow rate MFR₂ is 0.35 g/10 min when measured at 190 °C under a 2.16 kg load according to ISO 1133-1:2022. These values distinguish HE1346 from high-molecular-weight HDPE film grades, which typically exhibit MFR₂ values below 0.10 g/10 min, and from injection-moulding HDPE grades with MFR₂ above 2.0 g/10 min. The grade is not intended for blown film, pipe extrusion, or injection moulding except as a minor regrind component.
The product designation HE1346 identifies a medium-molecular-weight blow-moulding HDPE within the Borealis high-density polyethylene range. It is differentiated from ESCR-enhanced HDPE grades by a higher density and correspondingly higher top-load stiffness, and from high-flow injection grades by lower melt flow and higher melt strength. Published data for direct comparative performance against all Borealis HDPE grades in the same container geometry is limited; converter trials remain necessary for tool-specific substitution.
Mechanical and thermal values used in container design are derived from the manufacturer’s typical property data, not from specification limits. Tensile testing is performed on Type 1A injection-moulded specimens according to ISO 527-2:2012. Charpy impact data are generated under ISO 179-1:2010 using notched Type 1 specimens. The tabulated values are representative of the virgin grade and do not include the effects of colour masterbatch, regrind, or post-moulding annealing.
| Property | Test standard | Typical value |
|---|---|---|
| Melt mass-flow rate MFR₂ | ISO 1133-1:2022, 190 °C, 2.16 kg | 0.35 g/10 min |
| Density | ISO 1183-1:2019 | 0.946 g/cm³ |
| Tensile modulus | ISO 527-2:2012 | 850 MPa |
| Tensile stress at yield | ISO 527-2:2012 | 20 MPa |
| Tensile strain at yield | ISO 527-2:2012 | 9% |
| Charpy notched impact strength, 23 °C | ISO 179-1:2010 | 6 kJ/m² |
| Vicat softening temperature A50 | ISO 306:2022 | 125 °C |
| Melting temperature, DSC | ISO 11357-3:2018 | 130 °C |
The density of 0.946 g/cm³ places HE1346 in the medium-to-high density band for blow-moulding polyethylene. This density contributes to top-load strength in cylindrical containers but reduces low-temperature impact resistance relative to lower-density grades. The MFR₂ of 0.35 g/10 min indicates sufficient flow for thin-wall sections down to approximately 0.5 mm, though wall-thickness uniformity is governed primarily by die gap adjustment and parison programming. Environmental stress-crack resistance is not fully represented by the tensile and impact values; separate testing under ASTM D1693 is required when the container is intended for aggressive liquids.
On production-scale shuttle and accumulator-head machines, melt temperature and die-head pressure control the balance between parison sag and die swell. The grade’s viscosity profile permits a melt temperature window of 180–210 °C at the die exit. Feed-zone settings on a 45 mm screw with 24:1 L/D are typically started at 170 °C, with compression-zone set-points near 185 °C and metering-zone set-points near 195 °C. The die head is maintained at 195–200 °C. Residence time above 230 °C should not exceed 10 min because oxidative degradation can increase melt flow rate and reduce melt strength through chain scission. Accumulator-head machines are operated at the lower end of the temperature band to preserve parison integrity during long hang times.
Mould temperature is held between 10 °C and 30 °C. A starting blow pressure of 0.6–0.8 MPa is typical for containers with a wall thickness of 0.7–2.0 mm. Pre-blow pressure is set between 0.05 MPa and 0.10 MPa to control radial expansion before final inflation. Blow-up ratios above 3.5:1 have not been validated in the published processing guidance for this grade. Published data for cycle-time optimisation in multi-cavity tools is limited because cycle time depends strongly on container wall thickness, mould cooling efficiency, and part ejection temperature.
Pre-drying is normally unnecessary if pellets are stored in dry conditions. When cold-stored material is exposed to humid air, surface condensation can raise moisture above 0.05% by weight. Drying at 60 °C for 2 h using dehumidified air with a dew point below -20 °C is sufficient. Direct gas-fired dryers without close temperature control should be avoided because localised heating above 120 °C can fuse pellets and create feed blockages.
Substitution into an existing tool designed for a unimodal HDPE blow-moulding grade requires revalidation of die swell, pinch-off weld integrity, and top-load performance. HE1346 has higher melt flow than many high-molecular-weight blow-moulding grades, which can reduce parison sag but also lowers melt strength. As a result, the die-head temperature is frequently reduced by 5–10 °C relative to a grade with MFR₂ of 0.20 g/10 min to maintain parison geometry. When replacing an injection-moulding HDPE with MFR₂ above 2.0 g/10 min, the melt temperature is raised by 10–20 °C and screw speed is reduced to avoid melt fracture at the die lip.
Relative to a film-extrusion HDPE with density 0.950 g/cm³ and MFR₂ 0.10 g/10 min, HE1346 has lower melt strength and is unsuitable for blown film. Its processing window is narrower in vertical parison operations because the parison must support its own weight without excessive drawdown. For handleware containers, die profiling and parison programming are used to prevent thin spots at the handle pinch-off and lower sidewall. Compared with an ESCR-boosted HDPE grade, HE1346 offers higher stiffness at equivalent wall thickness but lower resistance to environmental stress cracking; containers for hydrocarbon-based formulations should therefore be evaluated under full-bottle stack load testing according to ISO 12048 or ASTM D2659 and under stress-crack testing according to ASTM D1693. Published direct comparative data against a specific ESCR-boosted Borealis grade in identical container geometries is limited.
Environmental stress-crack resistance is the limiting long-term property for rigid HDPE containers. The ASTM D1693 bent-strip method uses 100% Igepal CO-630 at 50 °C. Failure times measured on notched specimens do not translate directly to field performance because moulded-in stress, cooling rate, wall-thickness distribution, and external loads control crack initiation in a container. Containers with sharp radii at the pinch-off weld should be stress-relieved by uniform mould cooling at 20–25 °C and ejected at surface temperatures no higher than 70 °C.
HE1346 is not intended for continuous exposure to strong oxidising acids above 40% concentration, aromatic hydrocarbons, or chlorinated solvents at elevated temperature. For household chemicals and aqueous solutions, compatibility must be confirmed by full-bottle testing under the relevant transport regulation, such as UN 6.1 or ADR, when the article falls within dangerous-goods packaging scope. Avoid combination with amine-based processing additives because some hindered amine stabiliser packages can interact with acid scavengers and shift colour during regrind. Published data for this specific additive interaction with HE1346 is limited.
Documentation for Borealis HDPE HE1346 includes a safety data sheet under REACH Regulation (EC) No 1907/2006, Article 31. The polymer is exempt from registration under Article 2(9), but monomer and additive constituents are expected to be registered by the relevant suppliers. RoHS recast 2011/65/EU compliance is declared for lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls, and polybrominated diphenyl ethers. The grade is not a homogeneous material for electrical or electronic equipment, but the converter should verify final-article scope. Food-contact status is not granted automatically; the grade may be evaluated under EU 10/2011 using migration testing with food simulants. For pharmaceutical packaging, requirements under Ph. Eur. 3.1.5 or USP <661.1> should be verified against the relevant grade version.
| Regulatory or quality document | Standard or code | Status |
|---|---|---|
| Safety data sheet | REACH Article 31 | Required at supply point |
| Quality management | ISO 9001 | Site-dependent certification |
| Environmental management | ISO 14001 | Site-dependent certification |
| Restricted substances in packaging | 2011/65/EU Annex II | Converter final-article verification required |
| Food-contact evaluation | EU 10/2011 | Requires migration testing |
| Pharmacopoeia compliance | Ph. Eur. 3.1.5 | Verify current monograph version |
Batch-to-batch variation in melt pressure is normally below ±5% when virgin pellets are processed from sealed original packaging. Regrind addition up to 30% by weight has been used on industrial blow-moulding lines, but published data for HE1346 regrind above that fraction is limited. Melt stability can be monitored using the melt flow ratio MFR₂₁/MFR₂ under ISO 1133-1:2022; an increase greater than 15% after repeated heat histories indicates oxidative chain scission and loss of melt strength. On a twin-screw compounding line, pigment masterbatch addition is performed with a side feeder operating at 200–300 rpm. The grade accepts polyethylene-based colour masterbatches; low-density polyethylene masterbatches with MFR₂ above 10 g/10 min should be avoided because localised shear heating can produce flow marks on the container surface.
The operational boundary for this grade is a die-head melt temperature of 210 °C. Above this threshold, oxidative chain scission can shift MFR₂ by more than 15% within 10 min of residence time. Below 180 °C, homogenisation is incomplete and parison surface irregularities may appear. Processors should therefore maintain the die exit melt temperature inside the 180–210 °C envelope, monitor screw back-pressure for abnormal variation, and avoid extended line stops without nitrogen purge or screw retraction.
