| HS Code | 402270 |
| Product Name | INEOS LLDPE LL6910KJ |
| Material Type | Linear Low Density Polyethylene |
| Density | 0.918 g/cm³ |
| Melt Flow Rate 190 C 2 16 Kg | 10 g/10 min |
| Melting Point | 124 °C |
| Vicat Softening Point | 85 °C |
| Tensile Strength At Yield | 11 MPa |
| Elongation At Break | 100% |
| Flexural Modulus | 220 MPa |
| Shore Hardness D | 52 |
| Brittleness Temperature | -75 °C |
| Environmental Stress Crack Resistance | >1000 hours |
As an accredited INEOS LLDPE LL6910KJ factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | INEOS LLDPE LL6910KJ is supplied as free-flowing pellets in 25 kg multi-wall paper bags, palletized and shrink-wrapped for safe transport. |
| Container Loading (20′ FCL) | Loading a 20′ FCL container with INEOS LLDPE LL6910KJ, ensuring safe packing, securing, and proper documentation for transport. |
| Shipping | INEOS LLDPE LL6910KJ is shipped as non-hazardous polyethylene pellets in moisture-proof bags, bulk containers, or hopper trucks. Store in a dry, cool, well-ventilated area away from direct sunlight and ignition sources. Avoid excessive heat and humidity to prevent degradation or caking during transport. |
| Storage | Store INEOS LLDPE LL6910KJ in a clean, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep bags sealed and off the floor on pallets to prevent moisture contamination and damage. Avoid exposure to extreme temperatures and sharp objects. No special storage hazards exist under normal conditions, but good housekeeping is recommended. |
| Shelf Life | Shelf life is at least 12 months when stored in original sealed packaging, away from direct sunlight, heat, and moisture. |
For blown film converters running 1.0 g/10 min MFR (190 °C/2.16 kg per ISO 1133-1:2022) and 0.918 g/cm³ density (ASTM D792) linear low-density polyethylene on high-stalk lines, INEOS LLDPE LL6910KJ is most frequently compounded into frozen and chilled food contact packaging where bubble stability, dart impact, and seal integrity are co-dependent. The monolayer formulation window observed on 45–75 mm grooved-feed extruders with barrier screws at 24:1–30:1 L/D uses 70–85 wt% LL6910KJ and 15–30 wt% of a high-pressure LDPE with MFR 0.3–2.0 g/10 min and density 0.919–0.923 g/cm³; the LDPE fraction is not a filler but a melt-strength modifier that permits a 2.2–2.6 blow-up ratio and a 1.8–2.4 mm die gap without bubble instability. Slip and antiblock masterbatches are added at 0.3–1.0 wt% to reduce coefficient of friction to 0.25–0.45 when measured by ASTM D1894, and a fluoropolymer polymer processing aid at 0.05–0.15 wt% suppresses die-lip build-up and sharkskin at output rates where shear rate exceeds 500 s⁻¹. The converter typically sets melt temperature between 195 °C and 215 °C, holds frostline height at 6–9 die diameters, and targets film gauge 40–80 µm; under these conditions, dart impact by ASTM D1709 for a 50 µm film commonly falls above 90 g when the LDPE share is held at 20 wt%, while Elmendorf tear by ASTM D1922 shows higher transverse-direction values than longitudinal-direction values. Regulatory status for direct food contact rests on FDA 21 CFR 177.1520(c) 3.2a for polyolefin copolymers and EU Regulation 10/2011 Annex I and V when the finished film is produced under EC 2023/2006 good manufacturing practice; migration testing is conducted with food simulants selected under EU 10/2011 Annex III, with total migration not to exceed 10 mg/dm². Terminal product types in this segment include IQF frozen vegetable bags, bakery bread bags, frozen seafood pillow pouches, and laminated film substrates for processed meat overwrap.
Heavy-duty shipping sacks and intermediate bulk container liners impose a different stress field than food overwrap: the film is pulled, abrasion-loaded, and puncture-impacted at thicknesses of 100–250 µm, where simple monolayer LLDPE at 100% may tear catastrophically at folded gussets. Extrusion-level formulation on 60–90 mm blown film lines with 24:1–33:1 L/D barrier screws therefore pairs 60–80 wt% LL6910KJ with 20–40 wt% bimodal high-density polyethylene or fractional-melt LDPE, because the bimodal HDPE fraction raises tensile yield and reduces creep under load while the LL6910KJ fraction preserves dart impact and low-temperature ductility. For FIBC liners and mineral or resin sacks, gauge uniformity is controlled with internal bubble cooling and external bubble cooling at a die gap of 2.0–2.6 mm, blow-up ratio of 2.2–2.8, and melt temperature of 200–220 °C; the frostline is pushed to 7–10 die diameters to stabilize the larger bubble diameter. Anti-static or conductive film grades for combustible powder handling incorporate 2–5 wt% of a carbon-black or inherently dissipative masterbatch until surface resistivity reaches 10^8–10^11 Ω/sq under ASTM D257; this addition reduces dart impact, so the LL6910KJ share is kept at the high end of the range to compensate. Compliance for non-food industrial sacks is governed primarily by REACH Regulation 1907/2006 and EU packaging waste limits in Directive 94/62/EC for lead, cadmium, mercury, and hexavalent chromium, with a combined limit of 100 ppm by weight; if the liners are placed in direct contact with dry foods or pharmaceutical raw materials, the film must also meet FDA 21 CFR 177.1520(c) 3.2a and EU 10/2011. Blown film lines in this segment typically require die diameters of 200–350 mm and outputs of 150–350 kg/h; the limiting step is not melting capacity but bubble stability at high die lip shear and the resulting gauge variation, which should be kept below ±8% of mean thickness. Terminal product types include 100–250 µm FIBC liners, 40 ft container liners, dunnage air cushion films, and heavy-duty open-mouth sacks for polymer resin or mineral powders.
| Downstream segment | Primary regulatory hook | Mechanical test standard | Critical processing threshold |
|---|---|---|---|
| Frozen food blown film | FDA 21 CFR 177.1520(c) 3.2a; EU 10/2011; EC 2023/2006 | ASTM D1709; ASTM D1922; ASTM D1894; ASTM D1003 | LDPE share ≥ 15 wt% to maintain bubble stability |
| Heavy-duty sacks and FIBC liners | REACH 1907/2006; Directive 94/62/EC; optional FDA 21 CFR 177.1520(c) 3.2a | ASTM D257; ASTM D1709; ASTM D882 | HDPE share ≤ 40 wt% to avoid transverse-direction tear loss |
| Coextruded sealant layer | FDA 21 CFR 177.1520(c) 3.2a; EU 10/2011; EC 2023/2006 | ASTM F88; ASTM F1921; ASTM D3418 | Plastomer addition > 20 wt% lowers seal initiation below 85 °C but reduces thermal resistance |
| Agricultural covers and silage | EN 13206:2017; REACH 1907/2006 | ISO 527-3; ISO 7765-1; ISO 4892-2 | UV masterbatch < 4 wt% fails > 12-month weathering specifications |
| Stretch hood film | REACH 1907/2006; Directive 94/62/EC | ASTM D5459; ASTM D4649; ASTM D882 | LL6910KJ share > 60 wt% reduces elastic recovery after 80% prestretch |
In five-layer coextruded barrier structures for minimally processed meat and dairy, the sealant layer requires a resin that maintains hot-tack strength while the HFFS or VFFS line cycles at 80–110 packages/min and the sealing jaw applies pressure for 0.2–0.8 s. LL6910KJ is used in the sealant web at 80–100 wt% with 0–20 wt% of a metallocene plastomer of density 0.870–0.905 g/cm³ or 5–15 wt% of LDPE; the plastomer shifts the DSC melting endotherm and reduces seal initiation temperature from approximately 95 °C toward 78–90 °C, which is measured by ASTM D3418 and correlated with hot-tack data from ASTM F1921. The sealant layer thickness is typically 8–20 µm within a total film of 50–120 µm, and the layer must retain a seal strength above 1.5 N/15 mm after the packaging is contaminated with oily or aqueous product residue at ASTM F88. Cast coextrusion lines run the grade with a die gap of 0.5–0.8 mm, chill roll temperature 18–24 °C, and line speeds of 150–300 m/min; blown coextrusion lines run a die gap of 1.5–2.0 mm, blow-up ratio 2.0–2.4, and melt temperature 190–210 °C. Edge trim from cast lines is normally reintroduced into the sealant layer at 10–20 wt%, provided the incoming trim is dry and free of print ink, because higher regrind levels reduce hot tack and widen the sealing jaw setting window. Compliance for direct food contact is identical to other polyolefin sealing layers: FDA 21 CFR 177.1520(c) 3.2a, EU Regulation 10/2011, and EC 2023/2006 GMP; for structures used in the European Union, migration testing follows EU 10/2011 Annex III and Annex V, with total migration limited to 10 mg/dm² of surface area. Terminal product types include vacuum skin packaging for fresh red meat, MAP lidding films for cheese and sliced cooked ham, and flowpack films for fresh-cut salad and bakery items.
In agricultural greenhouse and silage applications, the LL6910KJ base resin is not regarded as a finished weather-resistant film; it is a high-toughness film substrate into which a light-stabilizer and infrared-control system is dispersed. A typical three-layer blown film formula uses 60–80 wt% LL6910KJ, 10–20 wt% LDPE for bubble stability, 5–15 wt% EVA with vinyl acetate content 9–18% for infrared barrier retention, 4–10 wt% of a UV masterbatch containing hindered amine light stabilizers and a UV absorber, and 1–3 wt% of an anti-fog/anti-drip masterbatch in the inner layer. The UV masterbatch loading is determined by accelerated weathering under ISO 4892-2 or EN 16472; formulations intended for 18–36 month greenhouse exposure require the higher end of the masterbatch range, while a 6–12 month low-tunnel film may use the lower end. Production on 60–120 mm three-layer blown-film lines uses a die gap of 2.0–2.6 mm, blow-up ratio 2.0–2.8, melt temperature 190–210 °C, and film gauge 150–250 µm for greenhouse covers, with silage bags often extruded at 200–400 µm; the die lip gap and frostline height are set higher than food-packaging operations because the agricultural film must tolerate the nucleation effect of high masterbatch loadings. Mechanical performance is controlled by ISO 527-3 tensile modulus, ISO 7765-1 dart impact, and tear resistance per ASTM D1922 or ISO 6383-2; the finished agricultural film must also meet EN 13206:2017 where applicable for covering films. There is no food-contact regulatory obligation for this segment, but the film must comply with REACH Regulation 1907/2006 for monomer and additive restrictions, and the installer must verify that anti-drip additives do not migrate into crop contact surfaces beyond applicable national agricultural input limits. Terminal product types include greenhouse covering, low-tunnel covers, silage bags, bunker silo covers, and tomato house films.
Pallet unitization stretch hood film for building material loads imposes a cyclic-loading environment in which the film is drawn 50–80% beyond its original layflat width at strain rates of 0.1–1.0 s⁻¹ and then required to recover elastically without necking. LL6910KJ is blended at 50–70 wt% with 20–40 wt% metallocene octene VLDPE or plastomer of density 0.880–0.905 g/cm³, plus 5–10 wt% LDPE for bubble stability and 0.5–2.0 wt% tackifier masterbatch to control unwind and load retention; the VLDPE fraction is the main elastic-recovery component, while the LL6910KJ fraction contributes puncture resistance and machine-direction strength at film gauge 60–150 µm. Production on high-stalk blown film lines with die gap 1.8–2.4 mm, blow-up ratio 2.0–4.0, and melt temperature 195–220 °C yields a balanced MD/TD orientation; the frostline is held at 8–10 die diameters to permit enough transverse orientation before bubble solidification. Elastic recovery is quantified by ASTM D5459 and ASTM D4649, and tensile energy to break is measured under ASTM D882; a 50% LL6910KJ / 40% VLDPE / 10% LDPE formulation typically exhibits lower final holding force than a metallocene-only film, so the blend is used for non-critical loads or where puncture resistance is prioritized over maximum prestretch. Compliance for industrial stretch hoods does not require food-contact status; it falls under REACH Regulation 1907/2006 and packaging heavy-metal limits in Directive 94/62/EC, with a combined lead, cadmium, mercury, and hexavalent chromium limit of 100 ppm by weight. Terminal product types include stretch hood film for pallets of building insulation, air-conditioning units, bagged cement, and beverage trays; the main operational boundary is that LL6910KJ share above 60 wt% reduces recovery below 80% after prestretch, so formulations requiring high retained force for long-haul vibration must use the lower end of the LL6910KJ range. Published data for this specific cyclic preconditioning configuration is limited; converters qualify on line-specific stretch hood machine trials rather than resin datasheet values alone.
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INEOS LLDPE LL6910KJ is an extrusion-grade linear low density polyethylene resin supplied for blown and cast film conversion. The grade is used in heavy-duty sacks, industrial liners, agricultural silage cover, collation shrink film, and lamination films where the converter must balance puncture propagation resistance, tear resistance, seal integrity, and process output. The product is a low-pressure ethylene/α-olefin copolymer with controlled short-chain branching. It is supplied in pellet form; the exact antioxidant, processing stabilizer, slip, and antiblock composition is designated by the KJ suffix and is disclosed in the lot-specific safety data sheet and certificate of analysis.
The manufacturer’s published reference data identify a nominal melt mass-flow rate of 1.0 g/10 min at 190 °C under a 2.16 kg load tested in accordance with ISO 1133-1. The nominal density is 0.920 g/cm³ measured under ISO 1183-1. These values place LL6910KJ in the film-density class between conventional low-density polyethylene and medium-density polyethylene. Lot-specific certificate-of-analysis values remain the primary acceptance data. The grade should not be interpreted as a universal property guarantee; film properties are strongly influenced by downstream processing.
In film conversion, the product is typically selected for applications requiring higher solid-state toughness than autoclave LDPE at comparable density and melt flow rate. The resin is not a drop-in replacement for all polyethylene grades. Differences in molecular weight distribution, comonomer type, additive loading, and catalyst residuals influence extrusion pressure, bubble stability, film optics, seal initiation temperature, and organoleptic behaviour. Users should conduct line trials with the specified thickness and downstream sealing equipment before full qualification.
High-pressure autoclave and tubular LDPE contain long-chain branches generated through radical transfer during polymerization. These long branches create strain hardening in the melt, which stabilizes the bubble and allows high drawdown; they also reduce the crystalline order in the solid state, which can lower tensile strength and environmental stress crack resistance at the same density. LL6910KJ, as a linear low density polyethylene, possesses a predominantly linear backbone with short-chain branches introduced by α-olefin incorporation. The absence of a high level of long-chain branching reduces melt strength and extensional strain hardening but increases the tie-molecule concentration in the semicrystalline film. The practical result is a shift in failure mode: autoclave LDPE tends to show lower dart drop impact and lower puncture resistance at the same film thickness, while LL6910KJ requires more attention to bubble stability and die pressure.
The melting and crystallization behaviour of the resin can be screened by differential scanning calorimetry in accordance with ISO 11357-3. For a linear low density polyethylene of 0.920 g/cm³ nominal density, the peak melting temperature typically falls in the 120–125 °C band and crystallinity is commonly below 50 %. These values are material-class indicators rather than lot-release specifications. Lower crystallinity compared with high-density polyethylene improves impact toughness and stress crack resistance while reducing modulus, hardness, and oxygen barrier.
At extrusion shear rates, the linear backbone of LL6910KJ produces higher apparent viscosity and higher die pressure than a branched autoclave LDPE of equal melt mass-flow rate. This occurs because long-chain branching in LDPE increases shear-thinning. A line optimized for autoclave LDPE may therefore require torque and pressure margin increases when converting to LL6910KJ. At low-shear conditions associated with sagging or bubble-forming, the branched LDPE has higher melt strength; therefore the frost line height, internal bubble cooling, and blow-up ratio must be re-established for the linear resin.
On a 75 mm 30:1 L/D barrier-screw blown-film line producing 100 µm heavy-duty sacks, the transition from autoclave LDPE to LL6910KJ typically begins with a die gap of 1.8–2.2 mm and a melt temperature of 190–220 °C. The lower end of this temperature range aids bubble stability by preserving melt strength, while the upper end reduces die pressure but accelerates antioxidant consumption. Air ring and internal bubble cooling are adjusted to hold the frost line height between 3 and 5 times the die diameter. A frost line height change of more than 10 % can alter the balance between dart drop impact and Elmendorf tear; in-line thickness profilometry and film gauge control are used to limit spatial variation. Published data for this specific line configuration and grade combination are limited, so the operating envelope is established by line trial.
On cast film lines, LL6910KJ is processed with a die gap of 0.4–0.8 mm and a chill roll temperature of 15–30 °C. The lower melt temperature limit is typically 200 °C to avoid melt fracture, while the upper limit is 240 °C to minimize oxidation. Line speed is set by film thickness and chill roll cooling capacity. In lamination films, the seal initiation temperature is a critical converted-film parameter and must be measured on the specific film structure; pellet melt flow rate alone does not provide this value.
Because the pellet surface is not hygroscopic, drying is not normally required for polyethylene stored in closed indoor silos or bags. If condensation occurs at relative humidity above 60 %, a short pre-drying step at 70 °C for 2 h in a desiccant dryer prevents surface moisture from causing bubble pinholes and gel-like optical defects. The resin should not be processed above 280 °C; thermal degradation generates oxidation products and shifts taste and odour behaviour in sensitive packaging.
Pellet lot acceptance for LL6910KJ is based on a standard set of polyethylene test methods. The pellet data do not predict film performance completely because orientation, thickness profile, and thermal quenching on the converting line dominate the final mechanical balance. The methods below are used for lot release and for converter screening.
| Property | Reference method | Unit |
|---|---|---|
| Melt mass-flow rate | ISO 1133-1 | g/10 min |
| Density | ISO 1183-1 | g/cm³ |
| Tensile stress at yield | ISO 527-2 | MPa |
| Tensile strain at break | ISO 527-2 | % |
| Elmendorf tear resistance | ISO 6383-2 | N |
| Dart drop impact resistance | ISO 7765-1 | g |
| Vicat softening temperature | ISO 306 | °C |
| Oxidative induction time | ISO 11357-6 | min |
Processors should compare the certificate of analysis against the installed machine capability. A melt flow rate shift of 0.1 g/10 min can require screw speed adjustment or a change in barrel temperature. A density shift of 0.001 g/cm³ changes crystallinity, film modulus, and seal response by measurable amounts; the exact magnitude depends on the film process and thickness.
Substitution of LL6910KJ for another conventional C4-LLDPE of identical melt flow rate is not necessarily a direct drop-in. Catalysts, comonomer distribution, molecular weight distribution, and additive formulation differ among producers. If the comparative resin is hexene- or octene-based, the longer short-chain branch of those grades can provide higher low-temperature impact and greater slow-crack resistance at equivalent density. In such cases, dart drop impact tested under ISO 7765-1 and Elmendorf tear tested under ISO 6383-2 should be compared on the same film line at the same thickness, blow-up ratio, and frost line height. Pellet MFR alone is an insufficient comparison.
Compared with a high-density polyethylene, LL6910KJ has lower flexural modulus and lower upper-use temperature but higher puncture and impact toughness and lower brittleness temperature. Compared with a metallocene LLDPE, the conventional molecular weight distribution of LL6910KJ generally reduces extrusion pressure and improves melt-fracture tolerance at the expense of ultimate optics and low-temperature toughness. The selection between these grades depends on whether the converter’s equipment is pressure-limited or the final film specification is optics-limited.
Metallocene LLDPE grades are characterized by narrow molecular weight distribution and more uniform comonomer incorporation. They often deliver higher dart impact and lower seal initiation temperature at equivalent density. However, the narrow distribution increases die lip shear stress and can lead to melt fracture at lower output rates unless fluoropolymer processing aids are used. LL6910KJ has a broader molecular weight distribution, which usually allows a larger melt-fracture-free operating window on single-screw and blown-film dies. The tradeoff is typically a higher haze value and a slightly higher seal initiation temperature compared with an optimized metallocene grade.
When the comparison is made against a C8-ULDPE of lower density, the density difference dominates the mechanical and thermal response. LL6910KJ at 0.920 g/cm³ is stiffer and less elastic than a 0.905 g/cm³ ULDPE; the lower-density ultralow grades show lower modulus and enhanced low-temperature toughness. For a heavy-duty sack of specified thickness, the choice is governed by the required stacking strength, seam opening force, and impact resistance. These attributes can be measured using ISO 527-3 for film tensile properties and ISO 7765-1 for impact.
Chemical compatibility also differs across polyethylene classes. LL6910KJ should not be dry-blended with EVOH, polyamide, or PET reclaim without an appropriate tie resin. The polar component forms discrete domains with weak interfacial adhesion, which reduces seal strength and flex-crack resistance. Such blends require a multilayer design or a compatibilizer selected for the specific polar polymer and film process. The grade is not recommended for direct contact with strong oxidizing agents or aromatic and chlorinated solvents under stress because of environmental stress cracking.
Food-contact suitability for uncolored LL6910KJ film is evaluated under FDA 21 CFR 177.1520 for olefin polymers and under Commission Regulation (EU) No 10/2011 for plastic materials intended for food contact. Compliance is not automatic; the converter must verify the specific additive package, the food simulant, and the migration limits applicable to the end use. Under the EU regulation, the overall migration limit is 10 mg/dm² of food contact area for general food-contact applications. Specific migration limits for monomers and additives referenced in the union list must also be respected. For lipophilic foods, fatty-food simulants may generate higher migration from the polyolefin than aqueous simulants.
The product is a combustible solid. Incomplete combustion can produce carbon monoxide, carbon dioxide, water, and hydrocarbon fragments. Processing above 280 °C can generate thermal degradation products and off-odour. Storage should be below 50 °C, away from direct sunlight, and separated from strong oxidizers. Indoor storage in original packaging reduces dust contamination and surface oxidation. The resin is not intended for use in medical device implants or long-term implantable applications without separate biocompatibility testing under ISO 10993.
