| HS Code | 332445 |
| Product Name | INEOS LLDPE LL6910AA |
| Polymer Type | Linear Low Density Polyethylene |
| Comonomer | Butene |
| Density | 0.918 g/cm³ |
| Melt Flow Rate 190 C 2 16kg | 1.0 g/10min |
| Melting Point | 122 °C |
| Vicat Softening Temperature | 102 °C |
| Tensile Strength At Yield Md | 12 MPa |
| Tensile Strength At Yield Td | 12 MPa |
| Tensile Strength At Break Md | 32 MPa |
| Tensile Strength At Break Td | 27 MPa |
| Elongation At Break Md | 500 % |
| Elongation At Break Td | 700 % |
| Dart Drop Impact Strength | 150 g |
| Haze | 10 % |
As an accredited INEOS LLDPE LL6910AA factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | INEOS LLDPE LL6910AA is supplied as free-flowing pellets in 25 kg polyethylene bags, suitable for film extrusion. |
| Container Loading (20′ FCL) | 20' FCL container loading of INEOS LLDPE LL6910AA in 25kg woven bags on pallets, shrink-wrapped and secured for safe transport. |
| Shipping | INEOS LLDPE LL6910AA ships as free-flowing solid pellets in moisture-protective packaging or bulk containers. Avoid contamination, direct heat, and humidity to preserve quality. It is non-hazardous; standard dry freight, rail, or hopper truck transport is suitable. Protect from prolonged UV exposure and store in cool, dry conditions. |
| Storage | Store LLDPE LL6910AA in a dry, clean, well-ventilated area, preferably in original sealed packaging or dedicated silos. Protect from direct sunlight, heat, moisture, and ignition sources. Avoid dust accumulation and static discharge. Keep away from oxidizing materials, foodstuffs, and incompatible chemicals. Maintain temperatures below 40°C to prevent clumping or degradation. |
| Shelf Life | Shelf life is indefinite when stored unopened in cool, dry conditions, protected from sunlight and moisture. |
On a 3,500 kN electric injection moulding machine producing thin-wall dairy cups at 0.40 mm nominal wall thickness, INEOS LLDPE LL6910AA is processed as the primary polyolefin phase. The melt is held at 215–240 °C with the nozzle temperature limited to 235 °C; mould coolant enters at 10–18 °C through a pressurized-water temperature-control unit. Injection speed is set at 180–350 mm/s and the calculated gate shear rate is kept between 10⁴ s⁻¹ and 10⁵ s⁻¹ to avoid melt fracture and gate-stringing defects. Pack pressure is applied at 600–900 bar with a hold time of 0.8–1.5 s and cooling time of 4–7 s on a 4-cavity valve-gated hot-runner stack mould. Gate diameters are 1.0–1.5 mm. The flow length-to-wall thickness threshold for short shots in this configuration is observed at 220:1–250:1; the moulder reduces cavity count or increases pack pressure within the permitted range when the threshold is crossed. Shot-to-shot mass variation is held below 0.2% by closed-loop pad control, and the screw cushion is maintained at 3–5 mm. The formulation for natural cups is 96–100 wt% LL6910AA with 3–4 wt% TiO₂/polyethylene colour masterbatch and 0.05–0.15 wt% erucamide slip masterbatch; hinged deli-container formulations incorporate 5–12 wt% of lower-density butene LLDPE or LDPE-rich reclaim to reduce hinge stress whitening. Compliance testing uses FDA 21 CFR 177.1520(c), EU Regulation (EU) No 10/2011 overall migration limit of 10 mg/dm², and GB 4806.6-2016 total migration limit of 10 mg/dm². Terminal finished products are 125–200 ml dairy cups, 250–750 ml delicatessen containers, hinged portion packs, and over-caps for ambient dairy closures. Moisture above 0.05 wt% in the silo or feed hopper produces gate splay; at ambient relative humidity above 60%, desiccant drying at 60 °C for 1–2 h is required before processing.
| Jurisdiction | Designation | Limit or test method |
|---|---|---|
| United States | FDA 21 CFR 177.1520(c) | Olefin polymer compliance; end-test extraction under 21 CFR 176.170(c) |
| European Union | EU Regulation (EU) No 10/2011 | Overall migration 10 mg/dm²; specific migration for listed additives |
| China | GB 4806.6-2016 | Total migration 10 mg/dm²; potassium permanganate consumption testing |
Where LL6910AA is moved upstream into a compounding line as the carrier resin for a 40 wt% carbon black masterbatch, the carrier fraction in the pelletized concentrate is fixed at 55–65 wt% for carbon black and 65–80 wt% for titanium dioxide concentrates. The compounder uses a 75 mm co-rotating twin-screw extruder with L/D 44:1, side-fed pigment, vacuum devolatilization at −0.8 bar gauge, and melt filtration through a 100–250 µm screen pack; pressure rise across the screen changer is kept below 1.2–1.8 bar. Barrel temperatures are maintained from 170 °C at the feed section to 220 °C at the die, with screw speed 400–700 rpm. The finished masterbatch is let down at 2–5 wt% in natural packaging-grade polyethylene; a 2.5 wt% letdown of a 40 wt% carbon black concentrate results in 1.0 wt% carbon black in the final part. This application is controlled by REACH Regulation (EC) No 1907/2006 and RoHS Directive 2011/65/EU for electrical/electronic end uses; food-contact packaging colours are assessed under EU Regulation (EU) No 10/2011. Terminal products are pelletized single-pigment masterbatches, additive masterbatches for slip and antistatic performance, and custom colour concentrates for injection moulding and blown film. The processing limitation is that powdered additives dry-blended into LL6910AA at feed-throat temperatures above 30 °C tend to segregate, and low-melting slip additives above 2 wt% can plate out on the pelletizer die face.
For one-piece mineral-water and carbonated soft-drink closures produced in a 48-cavity high-speed injection mould with a 2,800 kN electric machine, LL6910AA is introduced at 20–35 wt% into bimodal HDPE to raise environmental stress-crack resistance under cap-skirt strain; screening is conducted under ASTM D1693-15 condition B for each formulation lot. The melt is processed at 200–230 °C, mould temperature at 8–12 °C, injection speed at 250–400 mm/s, and clamping force at 2.2–2.8 kN/cm² projected area. Slip/antiblock masterbatch is added at 1–2 wt%; the blend MFR is measured by ISO 1133-1:2022 and maintained within 4–8 g/10 min to avoid gate stringing in high-cycle operation. The production process employs cold-runner sprues with tunnel gates 0.6–1.0 mm in diameter, robotic plate removal, on-line vision inspection for short shots, and a cycle time of 4–8 s. Compliance is verified under FDA 21 CFR 177.1520, EU Regulation (EU) No 10/2011, and, for child-resistant packages, ISO 8317:2015; carbonated beverage closures are additionally tested for pressure retention under 2 bar internal pressure. Terminal product types are mineral-water screw caps, carbonated soft-drink closures with slit tamper bands, sports-drink dispensing caps, and edible-oil bottle screw caps. The blend is not specified for hot-fill operations above 80 °C because closure back-off and torque loss under thermal expansion exceed the accepted process window.
In industrial pail lids and drum closures, LL6910AA is formulated at 25–45 wt% with bimodal HDPE and 10–20 wt% plant regrind that has been tested for MFR shift below 0.8 g/10 min. The parts are injection moulded on an 8,000 kN two-platen hydraulic machine with shot weights in the range 1.2–3.5 kg, melt temperature 210–240 °C, mould temperature 10–20 °C, and screw decompression of 5–8 mm before retract to prevent hot-runner drool. The downstream process includes sequential valve-gate opening for pail lids with diameters above 300 mm, and post-mould insertion of closed-cell polyethylene foam gaskets for liquid-tight sealing. Compliance is verified under UN Model Regulations Chapter 6.1 for packaging, ASTM D1693-15 condition B for environmental stress-crack resistance, and ASTM D2990-17 for compressive creep in stacked warehouse trials. Terminal products are 20–30 L pail lids, 120 mm drum closures, and 5 L canister caps. Published F50 data for this exact LL6910AA/HDPE blend are limited; each lot is therefore screened under ASTM D1693-15 condition B rather than relying on extrapolated supplier values.
Storage crates and collapsible bins moulded from LL6910AA define the lower sidewall thickness by creep deflection after 72 h at 40 °C under a simulated stack load of 220 kg. The formulation is 70–90 wt% virgin LL6910AA, 10–30 wt% washed post-consumer LLDPE/HDPE flake, and 0.5–1.5 wt% UV stabilizer masterbatch for outdoor-rated units. The melt is processed at 210–250 °C in a 45 mm injection screw with L/D 20:1, mould temperature 12–20 °C, and gas-assisted packing at nitrogen pressure 80–150 bar for thick hinges and corner bosses. Cycle time for a 25 L crate is 20–35 s depending on sidewall thickness. Compliance for food-handling crates falls under EU Regulation (EU) No 10/2011 and FDA 21 CFR 177.1520; mechanical validation uses ASTM D2990-17 tensile creep and ISO 178:2019 flexural modulus. Terminal products include stackable warehouse crates, collapsible vegetable totes, and under-bed storage boxes. The critical processing risk is that post-consumer flake with moisture above 0.15 wt% causes hydrolysis-induced surface splay and melt-pressure fluctuation; carbon contamination from label fibre above 50 ppm causes black specks that fail visual inspection. Published creep data for this specific recycled-content configuration are limited; each recycled lot is characterized by MFI and density before dry blending.
For injected toy shells and storage articles intended for children over 3 years, LL6910AA is formulated at 80–100 wt% with 5–15 wt% POE or EVA impact modifier and 2–4 wt% colour masterbatch. The production process uses an electric injection machine with 800–1,500 kN clamp force, melt temperature 190–220 °C, mould temperature 15–25 °C, injection speed 80–150 mm/s, and gate diameters 2.0–4.0 mm for thick-shell parts that require low residual stress. Low-energy drop-impact testing is conducted after conditioning at −20 °C for 48 h in accordance with ASTM F963-17 mechanical hazard clauses. Compliance is verified against EN 71-3:2019+A1:2021 for migration of certain elements, REACH Regulation (EC) No 1907/2006 Annex XVII entries 51/52 for phthalate restrictions, and ASTM F963-17 for sharp-edge and small-part requirements. Terminal products are building-block shells, sand-play containers, bath toys without oral-contact retention features, and toy storage bins. The operational boundary is that LL6910AA alone does not provide the required tensile elongation for thin-wall mouthing toys intended for children under 3 years; those applications require additional elastomer modification and specific migration verification under EU Regulation (EU) No 10/2011.
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INEOS LLDPE LL6910AA is a pelletized linear low-density polyethylene film resin with a nominal density of 0.918 g/cm³ and a nominal melt index of 1.0 g/10 min when determined at 190 °C under 2.16 kg load according to ASTM D1238. The grade is assigned to the INEOS LL6 series and is described by the supplier as a hexene copolymer; this comonomer composition is the principal structural distinction from butene-copolymer LLDPE grades in the same density and melt-index window. The material is intended for heavy-duty shipping sacks, industrial liners, carrier films, agricultural film, and frozen-food packaging where dart impact strength, Elmendorf tear propagation, and slow puncture resistance determine the limiting gauge. In monolayer blown film, LL6910AA competes with 0.918 g/cm³ butene LLDPE and with metallocene LLDPE grades of similar melt index; the primary differentiation is the longer short-chain branch length provided by the hexene comonomer, which increases tie-molecule formation without moving to an unprocessable higher molecular-weight grade.
Table 1 presents nominal resin and film property values from the current supplier technical data sheet for a 25 µm blown film sample. The values are lot-release targets rather than specification limits; a certificate of analysis should be obtained for exact batch-to-batch data, particularly when density tolerance of ±0.001 g/cm³ and melt index tolerance of ±0.1 g/10 min affect gauge control.
| Property | Test method | Nominal value |
|---|---|---|
| Density, natural resin | ASTM D1505 | 0.918 g/cm³ |
| Melt index, 190 °C/2.16 kg | ASTM D1238 | 1.0 g/10 min |
| Film thickness basis | ASTM D6988 | 25 µm |
| Tensile strength at yield, MD/TD | ASTM D882 | 11.0/10.3 MPa |
| Tensile strength at break, MD/TD | ASTM D882 | 40.0/30.0 MPa |
| Elongation at break, MD/TD | ASTM D882 | 700/800 % |
| Elmendorf tear strength, MD/TD | ASTM D1922 | 280/420 gf |
| Dart impact strength, Type A | ASTM D1709A | 140 g |
| Haze | ASTM D1003 | 11 % |
| Gloss at 45° | ASTM D2457 | 55 |
The melt flow ratio I21.6/I2.16 is sometimes not printed in public data sheets but remains an important batch-release parameter for high-stalk film lines. When the ratio increases by more than 0.5 units above a lot-reference value, film gauge variation at the collapsing frame can increase because broader molecular weight distribution lowers zero-shear viscosity and changes bubble tension. A converter should request the melt flow ratio on the certificate of analysis if gauge bands below ±3% are required for a 25 µm film.
On high-stalk blown film lines, LL6910AA is processed with a grooved-feed single-screw extruder having an L/D ratio between 24:1 and 30:1. Barrier screws with helical mixer or floating mixing elements are preferred because they reduce the melt-temperature fluctuation that appears as gauge bands. A typical barrel temperature profile begins at 180 °C in zone 1 and progresses to 190 °C, 200 °C, 210 °C, and 215 °C in subsequent zones; adapter and die are held at 205–215 °C. The melt temperature is measured at the screen changer and controlled to 195–215 °C. At a die gap of 1.8–2.0 mm, a blow-up ratio of 2.0:1–3.0:1, and a frost line height of 6–9 die diameters, a 90 mm extruder with a 250 mm die can run LL6910AA at 140–220 kg/h, depending on air ring type, ambient air temperature, and melt pressure. A screen changer pressure of 200–300 bar is typical under these conditions; pressure fluctuations of more than 5% across a run suggest screen-pack blinding or feed-bridging. If the melt temperature must be held within a window narrower than ±5 °C to maintain bubble stability, the die heating zones should be checked for thermocouple offsets greater than 3 °C and for independent cycling, because asymmetric die temperature causes gauge bands and stalk twist.
The most common failure mode observed on commercial lines is a slow vertical bubble oscillation that begins when the frost line is raised above 10 die diameters. This instability occurs because the low melt index of LL6910AA increases melt elasticity, and the partially cooled tube remains in the oriented crystallization plateau longer. A dual-lip air ring with the lower lip set at 30–50% of full flow and the upper lip at 40–60% of full flow is used to stabilize the bubble; lower-lip air velocity above 15 m/s can induce helical instability. Backpressure reduction through a wider die gap should not be used as a corrective action without recalibrating gauge, because increasing the gap from 1.8 mm to 2.5 mm increases draw-down stress and reduces machine-direction tear by as much as 10–15% in thin films.
Hexene-based LLDPE grades such as LL6910AA produce longer short-chain branches than butene-based counterparts. The longer branch length increases the probability of interlamellar tie-molecule formation during biaxial blown film orientation, improving impact toughness and tear propagation at equivalent density. In published comparative studies on 25 µm films at 0.918 g/cm³ and melt index 1.0 g/10 min, hexene LLDPE can exhibit dart impact values 20–35% higher and machine-direction Elmendorf tear values 50–70% higher than a butene reference. Slow puncture resistance under ASTM D5748 is typically 15–25% higher for hexene LLDPE than butene LLDPE at the same density and molecular weight. The optical haze penalty is small and depends on cooling rate; at frost line height below 5 die diameters, the haze increase for hexene LLDPE may be 0.5–1.0 absolute percentage points relative to butene. These ranges are derived from literature comparisons, not direct LL6910AA commercial trials, and should be validated on the target film line.
LL6910AA is generally supplied as a natural or barefoot pellet without slip and antiblock. The processor must introduce a suitable masterbatch at the feed throat or pay for a precompounded modifier package. When erucamide is used to reach a kinetic coefficient of friction between 0.10 and 0.20 as measured by ASTM D1894, the primary amide migration to the film surface requires 24–72 h at 22–28 °C. Blocking force measured by ASTM D3354 decreases as the surface erucamide concentration increases, but loading above 2000 ppm erucamide can produce visible bloom, reduce print adhesion, and lower seal strength in corona-treated films. Synthetic silica antiblock at 5000–10000 ppm raises haze by 0.5–1.5 absolute percentage points per 1000 ppm addition in 25 µm film and lowers gloss by 2–4 points at 45° per 2000 ppm increase; the exact slope depends on silica particle size and film cooling rate. Amine-based additives should be avoided in pigment or stabilizer masterbatches for LL6910AA because they can generate yellowing in packages stored above 35 °C.
LL6910AA is positioned below LL6920AA in melt index; the 1.0 g/10 min grade provides higher melt strength and higher dart impact but lower throughput than a 2.0 g/10 min hexene grade on the same extruder. At identical screw speed and die gap, the lower melt index can raise specific energy input by 3–6% and reduce maximum output by 5–10% on lines limited by melt pressure. Compared with metallocene LLDPE at the same density and melt index, LL6910AA has a broader molecular weight distribution, lower extruder backpressure at equivalent output, and better bubble stability at high frost line heights. Metallocene LLDPE generally provides a seal initiation temperature 5–10 °C lower and higher hot tack as measured by ASTM F1921. LL6910AA is therefore selected for heavy-duty packaging where extrusion robustness, tear strength, and puncture dominate, whereas metallocene LLDPE is selected where seal-through-contamination performance and lower seal temperatures are critical.
Table 2 places LL6910AA in a normalized property landscape. The ratios are literature-derived ranges for hexene, butene, and metallocene LLDPE film resins at equivalent density and melt index; they are not supplier specifications for a specific lot.
| Performance attribute | Test method | LL6910AA baseline | Butene LLDPE 1.0 MI / 0.918 g/cm³ | mLLDPE 1.0 MI / 0.918 g/cm³ |
|---|---|---|---|---|
| Dart impact strength | ASTM D1709A | 1.00 | 0.75–0.85 | 1.25–1.40 |
| Elmendorf tear strength, MD | ASTM D1922 | 1.00 | 0.55–0.65 | 1.05–1.15 |
| Elmendorf tear strength, TD | ASTM D1922 | 1.00 | 0.60–0.70 | 1.05–1.15 |
| Slow puncture energy | ASTM D5748 | 1.00 | 0.80–0.90 | 1.10–1.20 |
| Seal initiation temperature | ASTM F1921 | baseline | 1–2 °C lower | 5–10 °C lower |
Published data for this specific configuration is limited when LL6910AA is used in three-layer structures with skin layers above 20% of total thickness, or when post-consumer recycled LLDPE is blended above 10%. In such cases, direct pilot-line trials are required because the normalized offset relative to butene LLDPE shifts with the higher melt-index skin and the contaminant-based viscosity variation.
Food-contact status for LL6910AA must be confirmed using the current INEOS Regulatory Data Sheet and the finished-article extraction conditions, but polyethylene film resins of this type are typically included within FDA 21 CFR 177.1520(c) item 3.2a when the finished article meets the extractives limits specified in that section. Under EU Regulation (EC) No 10/2011, the material is subject to the overall migration limit of 10 mg/dm² and to specific migration limits for additives introduced in the final compound. Residual hexene-1 level in the polymer is below the detection limit for the regulatory method. REACH Regulation (EC) No 1907/2006 compliance for polymer articles requires that substances of very high concern not exceed 0.1% w/w in the article; this should be reconfirmed if color masterbatches or recycled content are added. RoHS Directive 2011/65/EU does not restrict polyethylene in electrical and electronic equipment unless prohibited heavy metals or flame retardants are introduced through a user-added masterbatch.
Downgauging trials with LL6910AA on heavy-duty sack lines typically target replacement of 40 µm butene LLDPE with 30–35 µm hexene LLDPE while retaining dart impact and tear values. However, reducing thickness lowers package stiffness. Secant modulus at 1% strain should be measured according to ASTM D882 for the final film cone, and the minimum required stiffness for the filling line must be established before approving the downgauged structure. If the film web is corona treated, the surface energy should be checked by ASTM D2578 and maintained at 36–40 dyn/cm for lamination or printing; treatment above 46 dyn/cm can cause back-treat loss within 30 days and reduce adhesion. Winding tension should not exceed 0.4–0.6 N/mm of film width for a 25 µm web to prevent blocking and telescoping. When a performance film requires both downgauging and high-speed packaging, the processor should validate hot tack values under ASTM F1921 on the actual seal jaws, because a 10 °C shift in seal initiation temperature can increase leaker rates on vertical form-fill-seal equipment by 2–4%.
