| HS Code | 264580 |
| Density | 0.946 g/cm³ |
| Melt Flow Rate 190c 2 16kg | 0.6 g/10 min |
| Tensile Modulus | 1100 MPa |
| Tensile Stress At Yield | 25 MPa |
| Elongation At Break | 600% |
| Charpy Notched Impact Strength 23c | 10 kJ/m² |
| Vicat Softening Temperature | 125 °C |
| Melting Temperature | 130 °C |
| Crystallization Temperature | 115 °C |
| Environmental Stress Crack Resistance | >1000 h |
| Hardness Shore D | 60 |
| Water Absorption | <0.01% |
| Thermal Conductivity | 0.4 W/m·K |
| Coefficient Of Linear Thermal Expansion | 1.5E-4 /°C |
As an accredited Borealis HDPE FB1460 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Borealis HDPE FB1460 is supplied in 25 kg polyethylene bags, palletized for transport, or 1,000 kg octabins. |
| Container Loading (20′ FCL) | A 20′ FCL typically loads about 25 MT of Borealis HDPE FB1460 in 25 kg bags, depending on packaging and weight regulations. |
| Shipping | Borealis HDPE FB1460 is shipped as non-hazardous polyethylene pellets, typically in 25 kg bags, big bags, or octabins on pallets. Use clean, dry trucks or containers. Protect from moisture, direct sunlight, heat, and contamination. No dangerous-goods classification; keep below 50°C. Maintain dry, ventilated storage and avoid prolonged UV exposure. |
| Storage | Store Borealis HDPE FB1460 indoors in a cool, clean, dry, well-ventilated area away from direct sunlight, heat, sparks, and flames. Keep original packaging tightly closed to prevent moisture, dust, and contamination. Do not store near strong oxidizers. Use pallets, avoid excessive stacking, and protect from UV exposure. Follow the supplier’s SDS and local regulations for safe handling and storage. |
| Shelf Life | Borealis HDPE FB1460 has a shelf life of about 24 months when stored dry, sealed, and protected from direct sunlight. |
On a 45 mm grooved-feed blown film extruder with L/D 30:1 and a barrier screw, Borealis HDPE FB1460 is processed into 10–12 µm layflat film for T-shirt carrier bag conversion. The grade has a nominal density of 0.946 g/cm³ per ISO 1183-1 and an MFR₂ of 0.6 g/10 min per ISO 1133-1:2022, placing it in the high-molecular-weight film segment where stalk bubble stability and downgauging capacity are the controlling variables. Melt temperature is kept at 195–210 °C at the adapter; below 195 °C, unmelted high-molecular-weight fractions increase bubble flutter, while above 210 °C, oxidative gel formation becomes visible at the die lip. A 120 mm die with 1.2 mm die gap is used, with blow-up ratio fixed at 4:1 and frost line height held at 700–900 mm above the die face so that orientation develops before collapse. Under this high-stalk arrangement, the bimodal molecular weight distribution of FB1460 permits a stable stalk and restricts dart impact loss at 10–12 µm; dart impact is measured per ASTM D1709-22 Method A and Elmendorf tear per ASTM D1922-23. Bag conversion on a T-shirt bag line requires seal jaw temperatures of 130–150 °C and dwell times of 0.3–0.5 s; below 130 °C, bottom gusset seal strength drops, and above 150 °C, localized film thinning occurs at the gusset fold. In EU markets, the 10–12 µm gauge places the finished article under the lightweight plastic carrier bag consumption reduction provisions of Directive (EU) 2015/720, amending Directive 94/62/EC, which affects regional minimum thickness strategies rather than polymer chemistry.
Borealis HDPE FB1460 is formulated into refuse sacks on three-layer coextrusion lines in which virgin FB1460 forms the outer layers and a post-consumer recyclate core carries up to 30 wt% of the total structure. The standard starting layer ratio is 20/60/20 on a 60 mm coextrusion line with 200 mm die diameter and 1.5 mm die gap; the outer FB1460 layers maintain bubble stability and dart resistance, while the PCR core is isolated from the melt stream at the die lip. Melt filtration through a 80/120/80 mesh screen pack is applied to the PCR extruder to remove particles above 125 µm; without this filtration, puncture frequency at fold lines increases because solid contaminants in the PCR reduce local strain hardening. The main process conflict is that PCR batch-to-batch MFR shifts from approximately 0.4 g/10 min to 0.9 g/10 min, altering back pressure and layer distribution; when core-layer MFR exceeds 0.8 g/10 min, the core tends to flow preferentially toward the die lips and the outer layers thin below the target 20% each. Carbon black masterbatch is added at 2.0–2.5 wt% to the outer layers for opacity and UV screening, but carbon black loadings above 2.5 wt% raise the zero-shear viscosity of FB1460 and increase motor load on the grooved feed section. Pre-drying of PCR at 80 °C for 4 h is used when visual moisture is present, although the hydrophobic nature of HDPE means moisture is less critical than paper or PVOH residues in the reclaim. Finished sacks are tested to EN 13592:2017 for dart impact, tear, and seal strength; batch-to-batch PCR variability is expressed as a wider coefficient of variation in ASTM D1709-22 Method A results than in virgin FB1460 film. Published data for this specific configuration is limited, and the practical limiting factor is usually recyclate quality rather than FB1460 melt strength.
| Requirement | Standard/Directive | Operational condition |
|---|---|---|
| Sack mechanical performance | EN 13592:2017 | Dart, tear, and seal strength measured on finished sacks; PCR ratio limited by lot consistency. |
| Packaging heavy metals | Directive 94/62/EC | Sum of lead, cadmium, mercury, hexavalent chromium limited to 100 mg/kg by weight. |
| SVHC screening | REACH Regulation (EC) 1907/2006 | No intentionally added SVHC in FB1460 or PCR feedstock; candidate list screening applies to imported recyclate. |
| EEE packaging | RoHS Directive 2011/65/EU | Not directly applicable to refuse sacks; Article 4 restriction applies only when the sack is supplied as packaging for EEE. |
In dry-food box liners and cereal bag structures, Borealis HDPE FB1460 is selected for a density of 0.946 g/cm³ and the stiffness it supplies to thin webs. The film is typically produced as a coextruded structure in which FB1460 forms 70–80% of the thickness and a low-temperature sealant skin of LDPE or a metallocene plastomer forms the remaining 20–30%. The sealant layer is necessary because unmodified HDPE exhibits a seal initiation temperature above 125 °C, too high for high-speed vertical form-fill-seal equipment; the coextruded skin reduces seal initiation to 90–110 °C while preserving the dead-fold and crush resistance of the HDPE layer. Blown film processing uses a 1.2–1.5 mm die gap and melt temperatures of 195–210 °C; a high frost line is retained to stabilize the stalk, and silica-based antiblock masterbatch is added at 0.5–1.0 wt% to prevent blocking after slitting. Compliance for direct food contact is established under FDA 21 CFR 177.1520(c) for olefin polymers and under EU Regulation 10/2011, with the overall migration limit set at 10 mg/dm² of food contact surface. Additive masterbatches require organoleptic and specific migration screening because slip and antiblock additives can migrate into dry food simulants; published data for this specific configuration is limited when fatty food contact or pasteurisation temperatures are involved, and such uses require migration testing with the actual final structure.
At 50–70 µm wall thickness, Borealis HDPE FB1460 is processed on large blown film lines for gusseted shipping sacks, where the failure mode shifts from bubble instability at thin gauge to heat transfer, output, and die lip build-up at heavier walls. The die gap is widened to 1.6 mm to maintain the same draw-down ratio as thinner webs, and melt temperatures are held at 190–205 °C because lower temperatures reduce oxidative gel formation during extended residence times. A blow-up ratio of 3.5:1 to 4:1 and a high frost line are used to balance machine-direction tear with dart impact; reducing BUR below 3.5:1 increases machine-direction tear resistance but narrows the dart impact distribution, while raising BUR above 4:1 increases transverse orientation and can reduce the machine-direction tensile strength required for sack filling and drop resistance. Carbon black masterbatch at 2.0–2.5 wt% is included for outdoor storage, and the sack surface is corona treated to 40–44 mN/m for print adhesion; treatment below 40 mN/m produces ink adhesion failures on gusseted panels. Filled sack drop testing is conducted per ISO 7965-1, while dart impact lot release is measured per ASTM D1709-22 Method A and tensile elongation per ISO 527-3. The process limitation on 75 mm grooved-feed extruders is usually bubble cooling capacity rather than plastication, because the 0.6 g/10 min MFR₂ of FB1460 produces high back pressure but also restricts motor load headroom when combined with carbon black and recycled trim.
For hygiene overwrap in 8–15 µm gauges, Borealis HDPE FB1460 is supplied in coextrusion with a low-melting sealant skin because the unmodified HDPE seal initiation temperature exceeds 125 °C. The FB1460 layer is maintained at 60–80% of total thickness for stiffness and dead-fold, while the sealant skin reduces the final seal initiation temperature to 90–110 °C on high-speed overwrapping machines. High-stalk processing at a blow-up ratio of 4:1 to 5:1 is used to improve web flatness and reduce gauge variation; the frost line height is raised to approximately 8 die diameters above the die face, and dual-lip air ring cooling with internal bubble cooling is required below 12 µm. At 8 µm, the practical failure mode is not dart impact but fold crease splitting during reel handling; Elmendorf tear measured per ASTM D1922-23 in the machine direction is therefore monitored more closely than tensile yield. Additive loading is kept below 1.0 wt% because high antiblock concentration at thin gauge produces optical haze and can initiate pinholes at the frost line. The film is slit at line speed, and layflat width variation is held below ±5 mm across the reel to prevent seal jaw misalignment on downstream overwrap units.
Extended UV exposure is a recognized boundary condition when Borealis HDPE FB1460 is extruded into 0.20–0.25 mm under-slab vapour retarder membrane. Water vapour permeance measured per ASTM E96/E96M-22 Procedure A or B typically falls below 0.1 perm in this thickness range, but field performance is governed by puncture, tear propagation, and seam integrity rather than the intrinsic diffusion coefficient of the polymer. Puncture propagation is assessed with ASTM D2582, while site damage from aggregate placement is not directly covered by standard dart impact testing; a 0.25 mm membrane with high puncture resistance can still fail at a fold if a sharp aggregate creates a stress concentrator. The film is laid with 150 mm minimum overlaps and sealed with acrylic pressure-sensitive tape, but the tape seam is the weak point because acrylic adhesives lose peel strength on dusty substrates. The grade is not stabilised for extended outdoor exposure, and open-air stockpiling before concrete placement should be limited; after concrete placement, the membrane is excluded from UV exposure and provides a capillary break and vapour barrier at the slab interface. Tensile properties of the membrane are measured per ISO 527-3, and elongation at break is used as a lot-to-lot check for molecular weight consistency rather than as a direct predictor of field puncture resistance.
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Borealis HDPE FB1460 is a bimodal high-density polyethylene resin supplied for blown film and thin-gauge sheet extrusion. The grade is produced in a dual-reactor Borstar process, which creates a molecular weight distribution that cannot be replicated by a single-reactor unimodal polymerization route. The nominal density of the resin is 946 kg/m³ when determined at 23 °C in accordance with ISO 1183-1, and the melt mass-flow rate is 0.6 g/10 min at 190 °C under a 2.16 kg load in accordance with ISO 1133-1:2022. The product is supplied as virgin pellets without intentionally added slip, antiblock, or processing aid, which allows the converter to control surface friction, blocking, and seal performance through masterbatch addition or coextruded skin layers.
The bimodal molecular architecture contains a high-molecular-weight fraction that contributes melt strength and a lower-molecular-weight fraction that improves shear thinning. In capillary rheometry at 190 °C, a resin of this melt flow rate typically exhibits a steeper shear-thinning slope than a unimodal HDPE of equivalent density and nominal melt flow rate. The practical result is that the melt remains sufficiently viscous in the low-shear bubble-stretching region while flowing more easily in the die land under high shear. This behavior is significant because it allows the processor to run the resin at lower melt temperatures without sacrificing bubble stability.
The first specification values that should be verified before film start-up are density, melt flow rate, and pellet contamination. A shift in melt flow rate of more than 0.05 g/10 min can alter bubble geometry and melt pressure on lines with a die gap below 1.5 mm. Converters should compare incoming lots against the certificate of analysis and retain samples for reference. Published data for all secondary film-performance properties of this specific configuration is limited; film properties at final gauge must be validated on the actual blown film line because they depend on die gap, blow-up ratio, frost line position, and masterbatch type.
| Property | Test method | Unit | Typical value |
|---|---|---|---|
| Density at 23 °C | ISO 1183-1 | kg/m³ | 946 |
| Melt mass-flow rate, 190 °C/2.16 kg | ISO 1133-1:2022 | g/10 min | 0.6 |
| Tensile modulus, 1 mm/min | ISO 527-2 | MPa | 900 |
| Tensile stress at yield, 50 mm/min | ISO 527-2 | MPa | 22 |
| Tensile elongation at break, 50 mm/min | ISO 527-2 | % | >600 |
| Vicat softening temperature, A50 | ISO 306 | °C | 124 |
Blown film extrusion of FB1460 is typically started with a barrel profile of 180 °C in the feed zone, 190 °C in the compression zone, and 190–210 °C in the metering zone and die. The die-lip temperature is monitored by infrared pyrometry and maintained between 190 °C and 220 °C. Because the melt flow rate is low, melt pressure and screw torque are sensitive to die gap. A die gap of 1.2–2.0 mm and a blow-up ratio of 3:1 to 5:1 are practical starting points. The frost line is usually positioned 6–12 die diameters above the die face. If the frost line is too low, rapid quenching produces higher haze and reduced tear resistance. If the frost line is too high, excessive crystallinity development can destabilize the bubble and reduce impact toughness.
On a conventional 65 mm grooved-feed single-screw extruder with an L/D ratio of 30:1 and a 250 mm die, film-grade HDPE of this melt flow class is often operated at screw speeds between 85 and 100 rpm. Mean melt pressure should remain stable; pressure fluctuations greater than ±3% of the mean value, measured with a strain-gauge melt-pressure transducer, are usually associated with feed-bridge plugging, insufficient feed-zone cooling, or a partially blocked screen pack. At constant screw speed, a pressure drop below 180 bar may indicate feed starvation or screw wear, while an increase above 280 bar generally indicates screen-pack fouling or an excessively narrow die gap.
Pre-drying is not normally required for standard blown film extrusion of this resin. However, pellets stored in cold conditions and transferred to a warm processing hall can develop surface condensation, which may appear as pinholes and bubbles in films below 15 µm. When condensation is visible, pre-drying at 70 °C for 2 h in a desiccant dryer is usually sufficient. Extended drying above 80 °C is not recommended because pellet surface oxidation can occur.
Melt temperature above 230 °C increases the risk of oxidative chain scission and gel formation. Melt temperature below 180 °C can produce melt fracture and uneven gauge distribution, particularly at narrow die gaps. The operating window is therefore narrower than that of a higher-melt-flow LDPE or LLDPE film grade, but the payout is higher stiffness and better bubble stability at reduced thickness.
The primary difference from a unimodal HDPE of similar melt flow rate is that FB1460 does not require the same trade-off between processability and mechanical performance. A unimodal resin with a melt flow rate of 0.6 g/10 min would normally generate high melt pressure and lower output unless processing temperature is increased. Raising temperature narrows the oxidative safety margin. The bimodal distribution reduces high-shear viscosity in the die while retaining a high-molecular-weight fraction for melt strength, so the resin can be run at lower melt temperatures and in thinner films with fewer gel defects.
Compared with C4-LLDPE, FB1460 has higher density and therefore higher tensile modulus, yield stress, and moisture-barrier resistance. In exchange, dart drop impact and Elmendorf tear resistance are lower, especially in monolayer films below 20 µm. For this reason, the grade is frequently placed in the core layer of a three-layer blown film structure, with LLDPE or LDPE skins providing heat-seal strength and impact resistance. This use pattern differs from many unimodal HDPE film grades, which are more often run as monolayer film because their processing window is less sensitive to skin-layer viscosity mismatch.
The density of 946 kg/m³ places FB1460 in the high-stiffness segment of the polyethylene film range. It is not intended as a sealant resin. If the resin is used as a sealant layer, heat-seal initiation is higher than that of LDPE or LLDPE, and the seal window may be insufficient for high-speed vertical form-fill-seal equipment. The grade is better understood as a structural layer resin that permits downgauging while maintaining film modulus.
In high-speed T-shirt bag converting lines, film produced from FB1460 is slit and sealed on rotary or servo-driven bag machines. The stiffness at a gauge of 10–15 µm is generally sufficient for automatic wicketting and stacking, while the high-molecular-weight fraction reduces machine-direction splittiness. Corona discharge treatment to 38–42 mN/m is required before printing with water-based flexographic inks. Untreated film retains a surface tension below 32 mN/m, which is inadequate for consistent ink adhesion.
Processors changing from monolayer HDPE film to a three-layer structure can use FB1460 in the core without changing the overall stiffness of the structure. The core layer provides modulus and downgauging, while the skin layers are selected for low seal initiation temperature, hot-tack strength, or controlled slip. The viscosity ratio between the core and skin layers is critical. If the skin-layer resin has a melt flow rate above 2 g/10 min, the melt curtain can become unstable at high blow-up ratios. In that case, the die gap is reduced to 1.2 mm or the core melt temperature is lowered by 5–10 °C to improve viscosity matching.
Coextrusion trials with a 3-layer spiral mandrel die have shown that layer distribution remains more stable when core-layer extrusion temperature is kept below 220 °C and the die is cleaned after each campaign. Carbonized material within the die gaps produces streak defects that cannot be corrected by temperature adjustment. Published data for this specific FB1460 coextrusion configuration is limited; pilot-line validation is required before high-output commercial campaigns because die design, layer-ratio control, and skin-resin selection influence the result more than the core resin alone.
In freezer-grade film structures, FB1460 is used as the core layer where its density reduces water-vapor transmission relative to lower-density polyethylene skins. The film is typically converted at total thicknesses of 25–60 µm, with the core representing 50–70% of the total structure. At these thickness ratios, the final film retains adequate puncture resistance while achieving the required stiffness for bag opening and stacking.
FB1460 is generally considered suitable for food-contact packaging under Commission Regulation (EU) No 10/2011 when the final film meets the overall migration limits specified in the regulation and the converter performs compliance verification. In the United States, the polymer falls under FDA 21 CFR 177.1520 for olefin polymers, subject to end-use conditions and food-type restrictions. Compliance with RoHS Directive 2011/65/EU and REACH Regulation (EC) No 1907/2006 is declared through the safety data sheet. The resin should not be assumed to be approved for pharmaceutical or medical device packaging without additional testing.
| Requirement | Reference | Typical status |
|---|---|---|
| EU food-contact plastics | Regulation (EU) No 10/2011 | Compliance by final film migration testing |
| US food-contact olefin polymer | FDA 21 CFR 177.1520 | Subject to end-use conditions |
| Restriction of hazardous substances | Directive 2011/65/EU | No restricted substances above threshold |
| Chemical registration and SVHC disclosure | REACH Regulation (EC) No 1907/2006 | Monomer registration and SDS disclosure |
Operational boundaries include avoidance of melt temperatures above 250 °C for extended periods, because oxidation can generate discoloration and gel. Storage should be in dry conditions below 40 °C and away from direct sunlight. Because the resin is supplied without slip and antiblock, film blocking can occur at roll pressures above 0.5 N/mm² if an appropriate masterbatch is not added. The grade should not be blended with materials containing high levels of unsaturated hydrocarbons or strong oxidizers, as these can accelerate thermo-oxidative degradation during extrusion.
