| HS Code | 415590 |
| Polymer Type | High Density Polyethylene (HDPE) |
| Density | 0.953 g/cm3 |
| Melt Flow Rate 190 C 2 16 Kg | 0.15 g/10 min |
| Melt Flow Rate 190 C 5 0 Kg | 0.50 g/10 min |
| Melting Temperature | 130 °C |
| Vicat Softening Temperature | 123 °C |
| Crystallization Temperature | 116 °C |
| Tensile Strength At Yield Md | 28 MPa |
| Tensile Strength At Yield Td | 26 MPa |
| Tensile Strength At Break Md | 45 MPa |
| Tensile Strength At Break Td | 40 MPa |
| Elongation At Break Md | 500 % |
| Elongation At Break Td | 600 % |
| 1 Secant Modulus Md | 1100 MPa |
| 1 Secant Modulus Td | 1200 MPa |
| Dart Drop Impact | 150 g |
| Elmendorf Tear Md | 20 g |
| Elmendorf Tear Td | 200 g |
| Haze | 15 % |
| Gloss 45 | 50 |
As an accredited Borouge HDPE FB1350 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Borouge HDPE FB1350 is packaged in 25 kg polyethylene bags, with 55 bags per pallet (1,375 kg total). |
| Container Loading (20′ FCL) | 20′ FCL loading: Borouge HDPE FB1350 in 25 kg bags, 55 bags/pallet, 18 pallets, totaling 24.75 MT; weight limits apply. |
| Shipping | Borouge HDPE FB1350 is shipped as non-hazardous polyethylene pellets, typically in 25 kg PE bags on pallets or bulk containers/trucks. Keep dry, clean, away from heat and direct sunlight. No special hazard classification; avoid package damage and dust generation. Follow local transport rules and supplier handling instructions. |
| Storage | Store Borouge HDPE FB1350 in its original, sealed packaging in a clean, dry, well-ventilated warehouse. Keep away from direct sunlight, heat, ignition sources, moisture, and strong oxidizers. Protect from contamination and physical damage; use first-in, first-out stock rotation. Maintain ambient storage conditions and avoid prolonged UV exposure. Stack pallets securely without overloading. |
| Shelf Life | Store Borouge HDPE FB1350 in cool, dry, unopened packaging away from sunlight and heat; typical shelf life is 24 months. |
On rotary bag-conversion lines running at 250 cycles/min, Borouge HDPE FB1350 is processed through a 55 mm barrier screw with L/D 28:1 and a 200 mm spiral mandrel die. The nominal resin density is 0.935 g/cm³ per ISO 1183-1, and the melt flow rate is 0.7 g/10 min per ISO 1133-1:2022. Melt temperature is set at 195–210°C, die gap 1.4 mm, blow-up ratio 3.5:1, and stalk height 9 die diameters. A typical converter formulation for 8–12 µm T-shirt sacks contains 92 wt% FB1350, 4 wt% C4-LLDPE of 0.920 g/cm³ density, and 4 wt% 50% calcium carbonate masterbatch. The LLDPE phase modifies transverse-direction tear propagation, while calcium carbonate roughens the film surface and lowers blocking during wicket punching. Screen-pack melt pressure normally ranges from 35 MPa to 42 MPa; sustained pressure above 45 MPa indicates gel or filler screen blockage and correlates with gauge variation of ±1.5%. Dart drop impact is evaluated under ASTM D1709A, Elmendorf tear under ASTM D1922, and tensile elongation under ISO 527-3. Food contact compliance for the olefin polymer is governed by FDA 21 CFR 177.1520 and EU 10/2011 Article 12, with overall migration verified below 10 mg/dm² by EN 1186-1. End products are wicket-packed T-shirt sacks, roll bags, and produce bags at 8–15 µm. Storage above 60% relative humidity requires dehumidified hopper drying at 60°C for 2 h to prevent surface moisture defects on the bubble.
Because wet household waste produces localized contact stresses that expose pin-hole defects, FB1350 is processed on a 50 mm extruder with L/D 30:1, internal bubble cooling exhaust at 18–22°C, die gap 1.0 mm, blow-up ratio 4.0:1, and frost line height 8 die diameters. A carbon black-containing formulation uses 85 wt% FB1350 and 15 wt% tubular LDPE of 0.918 g/cm³; this ratio shifts machine-direction and transverse-direction Elmendorf tear above the minimum requirements of EN 13592:2017. The process boundary is bubble stability at 10 µm: cooling air velocity above 25 m/s induces bubble flutter and pin-holes at the frost line, while melt temperature above 215°C reduces melt strength and destabilizes the stalk. Melt temperature is controlled at 200–215°C to disperse the LDPE phase without degrading the high molecular weight HDPE fraction. Compliance is assessed under EN 13592:2017 for dimensions, drop resistance, and tear resistance. End products include 10–25 µm bin liners, drawstring sacks, and food waste caddy liners. Published data for this specific formulation and gauge combination remains limited to converter line trials; batch-specific tear values must be verified by ASTM D1922 on the production line rather than extrapolated from resin datasheets.
Frozen vegetable packaging film requires ductile puncture resistance at −18°C; low molecular weight HDPE grades tend toward brittle fracture under these conditions, and high-melt-index LDPE grades cannot sustain a stable stalk bubble. A frozen-food formulation containing 88 wt% FB1350, 8 wt% metallocene C6-LLDPE, and 4 wt% titanium dioxide masterbatch is extruded on a 45 mm grooved-feed screw with L/D 30:1, die gap 1.0 mm, blow-up ratio 3.0:1, and melt temperature 185–205°C. The metallocene LLDPE lowers seal initiation temperature and adds transverse-direction impact toughness without collapsing the stalk. Frost line height is maintained at 6 die diameters; higher frost lines increase machine-direction orientation and produce split defects on vertical form-fill-seal lines. Food contact compliance includes EU 10/2011 Annex I Table 1, FDA 21 CFR 177.1520, and GB 9685-2016 where applicable; the titanium dioxide masterbatch must be evaluated for heavy metal specific migration under EU 10/2011 Annex II if used in the direct food contact layer. End products are 15–30 µm freezer bags, frozen vegetable pillow packs, and ice cube bags. Moisture vapour transmission rate at 30 µm is moderate and inadequate for oxygen-sensitive frozen prepared meals; those structures require coextruded EVOH or polyamide core layers.
At gauges above 100 µm, industrial liners for construction debris, mineral powders, and chemical packaging use FB1350 as the load-bearing layer because its high molecular weight tail suppresses melt fracture at low shear rates. A 75 mm extruder with L/D 30:1 feeds a 250 mm spiral mandrel die with 2.0 mm die gap at 2.5:1 blow-up ratio and 210–230°C melt temperature. The formulation is 95 wt% FB1350 and 5 wt% carbon black masterbatch; final carbon black concentration is 2.0–2.5 wt% for UV stabilization during outdoor storage. Tear resistance is measured by ASTM D1004 and tensile properties by ISO 527-3. The heavier gauge suppresses pin-holing observed at 10 µm, shifting the limiting failure mode to slow puncture at 23°C under ASTM D5748. Compliance for chemical packaging requires REACH Article 33 SVHC notification below 0.1 wt%, and packaging waste recovery under 94/62/EC. End products include 120 µm rubble sacks, FIBC inner liners, and pallet hoods. Back-pressure conditions above 50 MPa should be avoided because excessive shear heating can reduce molecular weight and lower Elmendorf tear measured by ASTM D1922.
When coextrusion layer thickness drops below 10 µm, FB1350 is used in the outer skin layers of three-layer cereal liners to provide stiffness and heat resistance while a lower melting point sealant is coextruded on the inner surface. A representative layer structure is 20 wt% FB1350 / 60 wt% LLDPE / 20 wt% LDPE or EVA sealant, with individual layer thicknesses down to 8–12 µm. The FB1350 skin stabilizes the bubble at a total line speed corresponding to 180 kg/h on a 3-layer, 200 mm die with 1.2 mm die gap. Melt temperatures for the three layers are maintained at 190–210°C; interlayer viscosity mismatch above 200 Pa·s at 100 s⁻¹ produces interfacial waviness that appears as optically visible haze bands. Food contact compliance for the multilayer structure is governed by EU 10/2011 and FDA 21 CFR 177.1520 for the polyolefin layers; EVA sealant layers may require additional assessment under FDA 21 CFR 177.1350 or 177.1360 depending on vinyl acetate content. Slip and antiblock masterbatches are limited to 800 ppm erucamide and 2,000 ppm silica to reduce plate-out on the collapsing frame. End products are cereal pouch liners, dry soup sachets, and biscuit wrappers. Amine-based antifog additives are an incompatibility because they can discolour under high shear and generate odorous low molecular weight degradation products.
Paper-like mailer films and carrier bag lamination represent a secondary FB1350 application. The resin is extruded as a 40 µm substrate and subsequently reverse-printed or laminated to paper. A 60 mm extruder with L/D 28:1 uses a 1.5 mm die gap, 3.0:1 blow-up ratio, and melt temperature 195–210°C. The formulation is 90 wt% FB1350 and 10 wt% high-density polyethylene wax masterbatch; the wax reduces surface friction for automated mailer insertion lines. Stiffness is evaluated as secant modulus under ISO 527-3 rather than dart impact. Non-food compliance is limited to REACH and 94/62/EC; combined lead, cadmium, mercury, and hexavalent chromium concentration remains below 100 ppm. End products are paper-laminated mailers, document envelopes, and industrial packaging with high-gloss printed surfaces. In-line corona treatment should raise surface energy to 38–42 mN/m because HDPE surface energy decays below 34 mN/m within 48 h, causing ink adhesion failure on high-speed flexographic presses.
Incorporating post-consumer HDPE recyclate into FB1350 changes the melt-pressure and gel-handling behaviour of refuse-sack and construction-liner lines. A non-food blend containing 70 wt% FB1350 and 30 wt% washed post-consumer HDPE is extruded on a 60 mm extruder with L/D 30:1, a 180 mm die, 1.5 mm die gap, and 3.0:1 blow-up ratio. Melt temperature is set at 195–215°C; the recycled fraction broadens the processing window but raises screen-pack contamination events. A continuous screen changer with 100/120/100 mesh screens is required to remove gel particles above 150 µm, otherwise bubble breaks occur at the frost line. The melt pressure rises from 32 MPa to 40 MPa as screen blockage progresses, and the pressure rise is used as the screen-change trigger. Compliance for non-food films containing recyclate includes EN 15343:2007 for recycled content traceability and REACH Article 33 for SVHC notification below 0.1 wt%. End products are non-food refuse sacks, industrial liners, and construction film. Published data for this specific recyclate blend and lot-to-lot variability is limited; each recyclate lot must be tested for melt flow rate under ISO 1133-1:2022 and gel count before blending with FB1350.
| Jurisdiction | Standard or Regulation | Applicable Clause | Test Method | Limit |
|---|---|---|---|---|
| United States | FDA 21 CFR 177.1520 | Olefin polymer specifications | ISO 1183-1, ASTM D1238 | Density and melt flow within specified ranges for olefin polymers |
| European Union | EU 10/2011 | Article 12, Annex I Table 1 | EN 1186-1 | Overall migration < 10 mg/dm² |
| China | GB 9685-2016 | Positive list for additives | GB 31604.1 | Additive-specific specific migration limits |
| European Economic Area | REACH EC 1907/2006 | Article 33 | GC-MS screening | SVHC < 0.1 wt% |
| European Union packaging | 94/62/EC | Article 11, Annex II | EN 13428, chemical digest | Sum of Pb, Cd, Hg, Cr(VI) < 100 ppm |
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Borouge HDPE FB1350 is a high-density polyethylene blown film grade produced via the Borstar bimodal cascade process and supplied as pelletized resin with a hindered phenolic/phosphite stabilization package and calcium stearate acid scavenger. The grade is intended for thin-gauge film extrusion where stiffness, moisture barrier, dart impact resistance, and melt strength are process-limiting variables. Melt flow rate measured according to ISO 1133-1 at 190 °C under 2.16 kg is controlled below 0.50 g/10 min, placing the material in the high-molecular-weight HDPE film class. Density determined by ISO 1183-1 is typically 0.946–0.952 g/cm³. The bimodal molecular weight distribution combines a high-molecular-weight fraction that improves bubble stability and dart impact resistance with a lower-molecular-weight fraction that reduces shear viscosity during extrusion. The resin is processed on high-stalk or low-stalk blown film lines equipped with single-screw extruders of 30:1 to 40:1 L/D, grooved feed sections, and spiral mandrel or ported annular dies. Die gaps from 0.8 mm to 1.8 mm are common, with melt temperatures between 180 °C and 210 °C. The upper melt temperature should not exceed 220 °C during extended runs because oxidative degradation can accelerate gel formation and die-lip build-up. Film thicknesses from 10 µm to 50 µm can be produced at blow-up ratios of 3:1 to 5:1.
The property balance of FB1350 differs from conventional unimodal high-density polyethylene film grades in tensile and tear anisotropy. Tensile yield stress measured by ISO 527-3 at 500 mm/min on 25 µm blown film is typically 22–28 MPa in the machine direction and 2–5% higher in the transverse direction. Elongation at break in both directions generally exceeds 600%. Elmendorf tear resistance measured by ISO 6383-2 is strongly direction-dependent: machine-direction values for 25 µm film are commonly 0.2–0.5 N, while transverse-direction values are 1.0–3.0 N. This directional anisotropy is an inherent result of molecular orientation in the stalk and affects bag handle and bottom-seal geometry. Dart drop impact resistance measured by ISO 7765-1 method A on 25 µm film is typically 150–250 g. The bimodal architecture permits impact retention at a lower density than a unimodal chromium-catalyzed HDPE film resin with the same melt index. In direct line comparisons, the low-molecular-weight fraction reduces extruder motor load by approximately 5–15% compared with broad-MWD unimodal grades at equivalent throughput, although published data for specific spiral mandrel configurations is limited.
The secant modulus of FB1350 film measured by ISO 527-3 at 1% strain is typically 700–900 MPa in the machine direction and 750–950 MPa in the transverse direction. Water vapour transmission rate measured by ISO 15106-2 at 38 °C and 90% relative humidity is typically 3.0–4.5 g·mm/(m²·day) for a 25 µm film; this value increases linearly with decreasing thickness below 15 µm. In coextruded barrier structures, the high-density layer reduces overall moisture permeability while a linear low-density polyethylene skin maintains seal integrity and puncture resistance.
Processing of FB1350 on high-output lines requires melt temperature control within ±5 °C at the die lip. Die-lip build-up from oxidized low-molecular-weight species can occur when melt temperature remains above 215 °C for more than 30 min; the defect may appear as amber streaks or die lines and increases film haze. Fluoropolymer processing aid masterbatches at 200–600 ppm are commonly used to suppress die-lip oxidation and melt fracture. On single-screw extruders with 25D to 30D screw length, a screen-pack combination of 20/40/80 mesh is recommended to remove incidental contamination without creating excessive pressure drop. Extruders with 35D or longer grooved-feed barrels can use 120 mesh screen packs for gel-sensitive film applications.
Barrel profiles typically begin at 160–170 °C in the feed zone and peak at 200–210 °C in the metering zone. The die zone should be set 5–10 °C below the metering zone to allow melt relaxation before orientation. Frost-line height for high-stalk extrusion is controlled between 500 mm and 900 mm; low-stalk extrusion may require internal bubble cooling to maintain output above 150 kg/h on 1,200 mm dies. Condensation-induced surface defects can occur when ambient relative humidity exceeds 60%; blower air and internal bubble cooling air must then be adjusted.
Storage in unopened bags at temperatures below 50 °C and relative humidity below 60% is sufficient to prevent moisture-related film defects. Opened bags or regrind introduction require pre-drying in a desiccant hopper dryer at 80 °C for 2–4 h. Moisture contents above 300 ppm can cause bubble instability, platelet-out on chill rolls, and surface pitting. The grade should not be dry-blended with amine-based stabilizer packages at elevated temperatures because the phenolic antioxidant system can be deactivated. Copper-containing masterbatches should be evaluated for long-term thermal-oxidative stability before production use.
Line trials comparing FB1350 with conventional unimodal HDPE film grades show several conversion differences. The higher melt strength of the bimodal resin permits a wider bubble-stability window at blow-up ratios above 4:1. The lower melt index may require a 10–20 °C increase in adapter and die temperature to prevent melt fracture. Output at equivalent screw speed can be 5–10% higher because of the lower shear viscosity contribution of the low-molecular-weight fraction, but backpressure may increase on high-pressure grooved-feed screws. The extruder drive motor should be sized for sustained operation at 80–90% of rated torque. Operators may need to reduce frost-line height or increase blow-up ratio to maintain transverse tear resistance.
| Film property | Test method | Borouge HDPE FB1350 | Conventional unimodal HDPE film grade |
|---|---|---|---|
| Density | ISO 1183-1 | 0.946–0.952 g/cm³ | 0.944–0.950 g/cm³ |
| Melt flow rate | ISO 1133-1 | <0.50 g/10 min | 0.7–1.2 g/10 min |
| Dart drop impact | ISO 7765-1 | 150–250 g | 100–150 g |
| Machine-direction tear | ISO 6383-2 | 0.2–0.5 N | 0.3–0.8 N |
| Transverse-direction tear | ISO 6383-2 | 1.0–3.0 N | 0.5–2.0 N |
| Secant modulus | ISO 527-3 | 700–900 MPa | 800–1,000 MPa |
The comparative ranges above are typical for 25 µm blown film processed under standard conditions; actual values shift with die gap, blow-up ratio, frost-line height, and melt temperature. The selection between FB1350 and a conventional unimodal HDPE grade therefore depends on whether the converter requires better impact retention at thin gauge or lower extrusion temperatures. For applications requiring puncture resistance rather than stiffness, linear low-density polyethylene may still be preferred despite its lower modulus and higher elongational viscosity.
The resin should be evaluated for end-use compliance under the applicable national or regional legislation. The following checklist summarizes commonly cited standards.
| Regulation or standard | Designation or clause | Assessment condition |
|---|---|---|
| European food contact | Regulation (EU) No 10/2011, Annex I | Specific migration limits satisfied for aqueous, 3% acetic acid, 10% ethanol, and fatty simulants; total migration below 10 mg/dm² |
| United States food contact | FDA 21 CFR 177.1520(c) 2.1a | Olefin polymer compliance for food-contact articles |
| Heavy metals | Directive 94/62/EC, Article 11 | Sum of lead, cadmium, mercury, and chromium VI below 100 ppm by weight |
| RoHS | Directive 2011/65/EU, Annex II | Concentration limits evaluated at 0.1% for lead and 0.01% for cadmium |
In coextruded structures, FB1350 is used as a stiff core or barrier layer in three-layer and five-layer blown film lines. The melt temperature of the HDPE layer is maintained at 200–210 °C, while tie resins based on maleic anhydride-grafted polyethylene are processed at 190–200 °C. Interfacial flow instabilities can occur when line speed exceeds 80 m/min because of melt viscosity differences between FB1350 and conventional linear low-density polyethylene skins; processing aid masterbatch and matched die land lengths reduce these instabilities. Corona discharge treatment at 38–44 mN/m surface tension is applied in-line for printing or lamination. The treatment can decay within 90 days of untreated storage, so lamination should be scheduled in the same production campaign.
Addition of post-industrial recyclate is limited by melt-flow shift and gel loading. Up to 10 wt% clean edge-trim regrind from the same film can be incorporated without significant loss of dart impact. Above 20 wt%, machine-direction tear resistance and gel count change measurably. Post-consumer recyclate should be screened to 0.5 mm melt filtration and limited to 10–15 wt% for critical barrier applications. Oxidative degradation during reprocessing can shift melt flow rate upward by 0.05–0.10 g/10 min per pass. At regrind levels above 30 wt%, a stabilizer masterbatch may be required to maintain film appearance. Screen changer pressure drop can increase by 3–5 MPa after 8 h on 100 mesh screens depending on regrind cleanliness.
Downgauging FB1350 below 10 µm is constrained by bubble stability, film blocking, and heat-seal strength. At 8 µm, the high-molecular-weight fraction still supports bubble stability at blow-up ratios below 4:1, but film blocking increases unless a slip additive such as erucamide is present at 500–1,000 ppm. Differential scanning calorimetry shows a peak melting temperature of 132–136 °C. Seal jaw temperatures of 150–170 °C are required for acceptable weld strength on standard bottom-seal bag lines. Compared with metallocene linear low-density polyethylene film of the same thickness, FB1350 provides higher modulus and lower dart drop impact; the resin choice depends on whether stiffness or puncture resistance controls the package.
Primary applications for Borouge HDPE FB1350 include T-shirt carrier bags, refrigerator and freezer films, industrial liners, and coextruded barrier films. In carrier bag conversion, the resin is often blended with 10–20 wt% linear low-density polyethylene to balance dart impact and film elasticity. In freezer films, low-temperature toughness of the high-molecular-weight fraction is retained to -30 °C; sharp seal corners and excessive orientation should be avoided. On bottom-seal bag lines, the seal temperature window is typically 150–170 °C at 25 µm. Seal strength measured by ASTM F88 is typically 3–6 N/25 mm for dwell times of 0.3–0.5 s. Actual values vary with seal bar pressure and coating release; published data for specific bag machine configurations is limited.
