| HS Code | 925099 |
| Density | 0.920 g/cm³ |
| Melt Flow Rate | 0.8 g/10min (190°C, 2.16kg) |
| Vicat Softening Point | 105 °C |
| Melting Point | 123 °C |
| Tensile Strength Md | 45 MPa |
| Tensile Strength Td | 40 MPa |
| Elongation At Break Md | 650% |
| Elongation At Break Td | 800% |
| Dart Drop Impact | 350 g |
| Haze | 5% |
| Gloss 20 Deg | 120 |
| Elmendorf Tear Md | 2.5 N |
| Elmendorf Tear Td | 10 N |
As an accredited INEOS LLDPE LL6208AF factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | INEOS LLDPE LL6208AF is supplied as free-flowing pellets in 25 kg polyethylene-lined bags, suitable for safe handling and storage. |
| Container Loading (20′ FCL) | INEOS LLDPE LL6208AF is loaded as a 20′ FCL, with palletized bags securely stowed for safe transport. |
| Shipping | INEOS LLDPE LL6208AF is a non-hazardous linear low-density polyethylene resin. Ship in clean, dry containers or bags, away from moisture and direct sunlight. Use covered transport, protect from physical damage, and store in well-ventilated areas. No special dangerous-goods requirements apply. |
| Storage | Store INEOS LLDPE LL6208AF in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and open flames. Keep containers sealed to prevent moisture absorption and contamination. Avoid stacking excessively high. No special hazardous storage conditions are required, but maintain good housekeeping to prevent dust accumulation and slipping hazards. |
| Shelf Life | Shelf life is indefinite when stored dry, away from UV light and heat; proper handling prevents degradation. |
On a vertical form-fill-seal line converting 15–25 µm blown film into chilled salad bags, INEOS LLDPE LL6208AF functions as the food-contact substrate and the anti-fog layer simultaneously. The grade is a butene-comonomer linear low density polyethylene with nominal density 0.920 g/cm³ under ISO 1183-1:2019 and melt flow rate 0.80 g/10 min under ISO 1133-1:2022 at 190°C/2.16 kg. The integrated surface-active additive system migrates to the film surface after extrusion, lowers interfacial tension, and forces condensate into a transparent water film instead of discrete droplets. This wetting transition is critical in packages for washed leafy greens, herb leaves, and shredded cabbage stored at 4°C and 85% RH, where moisture release occurs continuously during the first 6–24 h after packing.
For direct food contact, the film must comply with FDA 21 CFR §177.1520 and EU Regulation (EU) No 10/2011 as amended by (EU) 2020/1245. Overall migration must not exceed 10 mg/dm² under the worst intended food-contact conditions. On a single-screw blown film line with screw diameter 45–65 mm and 24–30 L/D, the recommended melt temperature is 190–210°C. Higher melt temperatures accelerate oxidative degradation of the migrating ester-based anti-fog package. Die gap is set at 1.8–2.2 mm, blow-up ratio at 2.5:1–3.0:1, and frost line height at 8–12 die diameters to stabilize the LLDPE melt. The terminal article is a cold-chain retail bag sealed at 115–130°C with 0.3–0.5 N/mm jaw pressure on machines running at 45–70 bags/min.
The standard monolayer formulation is 100 wt% LL6208AF when the converting line has adequate bubble support. Where film stiffness and machinability on older VFFS machines create folding or sealing issues, the grade is let down with 20 wt% LDPE homopolymer having a melt flow rate of 0.30–0.50 g/10 min and density 0.922–0.924 g/cm³. Anti-fog performance remains stable if LL6208AF stays above 70 wt% of the final film; below this level, replenishment with 1–2 wt% anti-fog masterbatch is required. Edge trim containing process oils and ink can lower anti-fog activity and should be limited to 10 wt% of the extrusion input. Production failure modes include condensation streaks on side gussets and uneven anti-fog wetting after silicone roll transfer if reels are stored longer than 90 days at warehouse temperatures above 30°C. Storage below 25°C and 50% RH maintains the anti-fog bloom.
Bakery packaging with a clear window or full-face transparent wrap is converted when the product is packed at 25–35°C under 60–70% RH and later displayed in chilled counters. LL6208AF forms a continuous condensate film rather than fog droplets on the inner surface. The film must retain optical clarity after the pack is cooled from loading temperature to 4–8°C. Haze under ISO 14782 remains below 12% for a 38 µm monolayer in production trials. The terminal article is a flow-wrapped bakery pack, a sandwich wedge pack, or a cake window film produced on horizontal flow-wrap lines at 60–90 packs/min. Short seal dwell times require stable hot tack at 120–140°C jaw settings.
The food-contact status matches FDA 21 CFR §177.1520 and EU 10/2011. For printability, surface tension after corona treatment must be at least 38 mN/m before flexographic ink transfer. A blend of 75 wt% LL6208AF with 25 wt% LDPE grade having MFR 0.70 g/10 min and density 0.923 g/cm³ supplies melt strength for 35–50 µm film. On blown film lines the die gap is 2.0–2.4 mm and blow-up ratio is 3.0:1. Melt temperature in this application is kept at 185–200°C because the anti-fog additive must remain near the food-contact surface, and high drawdown or excessive residence time lowers its concentration at the film-air interface.
Frozen bakery and par-fried potato lines require films with low-temperature puncture resistance. Condensation control is often evaluated after defrost display, not at blast-freezing. LL6208AF at 50–75 µm provides balanced dart impact and anti-fog wetting after the pack is moved to ambient display. The grade is frequently used at 100 wt% because adding LDPE reduces low-temperature toughness more than it improves processability. The film is converted on a screw with 24–28 L/D, melt temperature 195–210°C, die gap 2.0–2.2 mm, and blow-up ratio 2.0:1–2.5:1. Lower blow-up ratios increase machine-direction tear strength but reduce dart impact unless the frost line is raised. Dart impact by ISO 7765-1 on 50 µm film is monitored during line qualification. Recycled trim above 15 wt% may create gel formation at the die lip and interrupt anti-fog wetting. The terminal article is a freezer bag or overbag for baked goods, potato products, or frozen seafood. Reels should be stored at 25°C or below and <60% RH to prevent pre-opening of the anti-fog bloom.
The inner surface of a multi-season greenhouse film must act as an anti-drip layer, not merely an anti-fog layer. LL6208AF is placed as an inner coextruded skin, typically 20% of total thickness. If total film is 150 µm, the inner layer is 30 µm. Below 30 µm, the reservoir of migrating anti-fog additive depletes faster; published data for this specific configuration beyond 24 months is limited. The middle layer is an EVA-rich tie layer at 60% of total thickness, and the outer layer is a UV-stabilized LLDPE/LDPE blend at 20% of total thickness. This layer distribution is used on three-layer blown film lines with extruder diameters typically 50 mm, 70 mm, and 90 mm.
Agricultural covering films are tested under EN 13206:2017 for thickness, elongation, and service life class. LL6208AF itself does not supply sufficient UV stabilization for exposed outer surfaces. The outer layer requires a HALS/UV absorber masterbatch at 8–12 wt% in the outer skin, and the greenhouse orientation must be verified for sulfur and pesticide exposure. Processing uses die gap 2.0–2.4 mm and blow-up ratio 2.0:1–2.8:1. Melt temperature in the inner layer is kept at 190–205°C to avoid degrading the anti-fog agent. Anti-drip performance is evaluated by observing wetting uniformity after thermal cycling at 5–35°C and 85% RH. The terminal product is a tunnel cover, greenhouse cover, or low-tunnel film with service-life expectation tied to the UV package and regional irradiation. Dust deposition, pesticide contact, and water quality on the inner surface can reduce anti-drip persistence; such effects are site-specific and require field validation.
Sealant webs for case-ready protein trays use LL6208AF in monolayer lidding or in the sealant skin of a coextruded film. The lidding is heat-sealed to APET/EVOH/PE or polypropylene trays under modified atmosphere. Anti-fog on the inner surface prevents condensate accumulation over red meat cuts at 0–2°C and 70–80% RH. The monolayer formulation is 85 wt% LL6208AF, 10 wt% metallocene LLDPE with density 0.918 g/cm³ and MFR 1.0 g/10 min, and 5 wt% anti-fog replenishment masterbatch when film is coextruded with low-anti-fog carrier layers. The terminal articles include lidding for MAP trays of beef, pork, poultry, and sausage. Seal contamination by protein purge is the dominant process conflict, and increasing the metallocene LLDPE fraction improves hot tack at the expense of anti-fog wetting duration.
Food-contact compliance is tested per FDA 21 CFR §177.1520 and EU Regulation (EU) No 10/2011. Seal strength is measured according to ASTM F88/F88M-21; a typical target for 30 µm lidding is ≥5 N/15 mm peel strength on clean tray flanges. Seal initiation occurs at 95–110°C, and production sealing runs at 120–140°C with 0.3–0.6 s dwell. Because the anti-fog additive is migratory, corona treatment for print should not exceed 42 mN/m or it will remove the bloom too rapidly. Lidding film is converted on cast film lines at 200–220°C melt temperature or on blown film lines with die gap 1.6–2.0 mm. For oxygen-rich MAP at 70% O₂ and 30% CO₂, residual oxygen transmission through 25–30 µm LLDPE permits controlled gas exchange in non-barrier case-ready formats. For barrier lidding, LL6208AF is coextruded with EVOH and tie layers, where the anti-fog skin is the food-contact sealant layer only and total thickness is 40–60 µm. Seal-through-contamination performance is confirmed by ASTM F1921-20 hot-tack testing on actual tray stock. Published data for specific anti-fog retention after 14 days in high-condiment meat packs is limited and requires plant trial validation.
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INEOS LLDPE LL6208AF is introduced as a film-grade linear low-density polyethylene resin for blown-film conversion lines where controlled surface modifier dispersion and down-gauge impact retention are specified. The manufacturer’s published values include a melt flow rate of 1.0 g/10 min measured at 190 °C under a 2.16 kg load in accordance with ASTM D1238 or ISO 1133-1, and a nominal density of 0.920 g/cm³ under ASTM D1505 or ISO 1183-1. The AF suffix identifies a film-grade additive package; exact slip and antiblock concentrations are typically disclosed in the supplier certificate of analysis rather than in generic product literature.
The grade sits in the medium-viscosity, low-crystallinity segment of the LLDPE film range. At a density of 0.920 g/cm³, the crystalline weight fraction is lower than that of a 0.926 g/cm³ medium-density polyethylene and higher than that of an ethylene-vinyl acetate copolymer of typical film density. The resulting film is therefore less stiff than high-density or medium-density polyethylene, while the linear backbone suppresses the strain-hardening response observed in autoclave low-density polyethylene.
The short-chain branching distribution in LL6208AF is consistent with a butene-copolymer linear low-density polyethylene produced on a Ziegler-Natta catalyst system, although branching frequency is not fully disclosed in general literature. In a Ziegler-Natta LLDPE, the chain-length distribution is comparatively broad; this breadth reduces melt fracture at high shear rates but yields lower gloss than a metallocene-catalysed grade of equivalent density. The density of 0.920 g/cm³ corresponds to a melting peak that typically falls between 120 °C and 124 °C when measured by differential scanning calorimetry under ASTM D3418, though grade-specific melting curves should be verified against the supplier certificate of analysis.
The absence of long-chain branching is the principal architectural difference from low-density polyethylene manufactured in tubular or autoclave reactors. This linear architecture increases tensile strength and puncture resistance but reduces low-shear melt elasticity. In practical blown-film operations, LL6208AF therefore commonly requires a higher stalk height or different air-ring settings than a high-pressure LDPE of equivalent melt index because the bubble is less resistant to sudden air-pressure fluctuations.
Blown-film conversion of LL6208AF typically proceeds on single-screw extruders with screw diameters from 45 mm to 90 mm and length-to-diameter ratios between 24:1 and 30:1. The usual melt-temperature window for linear low-density polyethylene of this density lies between 190 °C and 230 °C. Operation below 190 °C can produce high melt pressure and unmelted resin at the die lip, while prolonged exposure above 240 °C can initiate oxidative gel formation. The blow-up ratio is commonly maintained between 2.0:1 and 3.5:1, and frost-line height is adjusted to balance machine-direction and transverse-direction tear properties. Published data for the specific optimal frost-line setting of LL6208AF is limited; converter trials remain necessary because the additive package influences heat-transfer behaviour near the frost line.
Because the resin contains an antiblock component, die lip deposit accumulation may differ from non-additised grades. Periodic die cleaning is required when high back-pressure or melt-temperature deviations indicate additive build-up. Moisture absorption is not a major degradation pathway for LLDPE, but condensation on pellet surfaces at relative humidity above 60% can introduce surface defects in cast-film and extrusion-lamination processes. Critical operations therefore use conditioned feed hoppers or desiccant drying when pellets are transferred from cold storage to a warm extruder.
Compared with autoclave LDPE of equivalent melt index, the linear backbone of LL6208AF raises elongation at break when measured under ASTM D882 and permits higher film strength at reduced gauge. The same architecture reduces melt elasticity; bubble stability is therefore lower, and operators running high-stalk lines must compensate with internal bubble cooling or a higher neck height. Against a metallocene-catalysed hexene LLDPE of the same 0.920 g/cm³ density and 1.0 g/10 min melt index, LL6208AF typically exhibits lower dart impact retention at 25 µm and lower Elmendorf tear under ASTM D1922 because the butene branch is shorter and less effective at generating tie-chain entanglement. The processing penalty is reversed: the broader molecular weight distribution of a Ziegler-Natta product usually reduces extruder head pressure and improves melt stability on single-flighted barrier screws. These differences become most apparent when film gauge is reduced below 25 µm; under those conditions, the safety margin provided by hexene tie molecules is often the controlling variable.
Direct numerical comparison should be drawn from the supplier certificate of analysis because generic published data cannot account for batch-to-batch variation in molecular weight distribution. The selection between LL6208AF and a metallocene hexene resin is therefore not governed solely by nominal density and melt flow rate but by the conversion line’s bubble cooling capacity, screw design, and seal-strength requirements.
On a high-stalk line, the comparatively low melt strength of LLDPE is partially offset by crystalline orientation generated in the stalk. Stalk height for LL6208AF is generally set higher than for LDPE, often between 6 and 10 die diameters, to permit orientation and stress relaxation before the frost line. A shorter stalk can produce sag, bubble-width oscillation, or uneven film thickness. An excessively high stalk increases machine-direction orientation, raises machine-direction shrinkage, and reduces transverse tear propagation.
On a 70 mm grooved-feed extruder with a length-to-diameter ratio of 30:1 and a dual-lip air ring, published processing guides for Ziegler-Natta butene LLDPE indicate lower screw torque demand than for a metallocene hexene LLDPE of equivalent melt index at the same screw speed. The exact melt-pressure difference depends on screw design, barrel temperature profile, and die gap. However, bubble pulsation may be higher if the stalk is not sufficiently cooled or if internal bubble cooling is absent. The practical melt-temperature envelope for LL6208AF can be narrower than for LDPE because oxidative gels increase above 230 °C and melt fracture increases below 190 °C. On some air-cooled bubbles, a 2 °C melt-temperature change can shift the frost-line position by approximately one die diameter; this sensitivity demands tighter thermal control than high-pressure LDPE.
Surface modifier migration in LLDPE film matrices is governed by the molecular weight of the slip agent and its compatibility with the amorphous phase. In film produced from LL6208AF, the slip component migrates to the surface over hours to days after extrusion. Coefficient of friction is measured according to ISO 8295 or ASTM D1894. Because migration kinetics depend on storage temperature and film crystallinity, immediate on-line testing can overstate the coefficient of friction compared with measurements taken 24 h to 48 h after conversion. The antiblock additive reduces blocking by creating controlled micro-roughness; film haze is affected by particle loading and particle size distribution. Published data for the specific antiblock particle size used in LL6208AF is generally unavailable in public literature and should be confirmed through the supplier certificate of analysis.
Typical failure modes observed on high-speed blown-film lines include bubble pulsing, film blocking after roll wind, and loss of corona-treat wetting due to additive bloom. If film is corona-treated inline and then stored, treatment decay is faster at 30 °C and 80% relative humidity than at 20 °C and 50% relative humidity; this is a surface-energy limitation rather than a resin mechanical failure. Converters using water-based inks or lamination adhesives should therefore verify treatment level immediately before secondary processing rather than relying on initial dyne values.
Sealing behaviour of LL6208AF is determined by the crystalline melting range and the surface additive package. For linear low-density polyethylene with a density of 0.920 g/cm³, heat-seal initiation generally falls between 105 °C and 115 °C on an impulse or constant-heat bar sealer. Direct seal-initiation curves for LL6208AF should be generated on the target packaging line because dwell time, sealing pressure, and jaw temperature uniformity affect seal strength. Hot-tack is lower than that of ionomer or EVA sealants, so high-speed vertical form-fill-seal lines must evaluate the seal-peel transition before substituting this resin into a laminate structure.
Regulatory statements for food-contact applications are product-specific and batch-specific. Industrial data routinely refer to 21 CFR 177.1520 for olefin polymers and to EU Regulation (EU) No 10/2011 for plastic food-contact materials. LL6208AF should be evaluated against the current supplier food-contact statement, and the user is responsible for migration testing under finished-article conditions specified in EU 10/2011 or applicable food-contact guidance. Published data covering repeated-use migration for this specific material is limited.
Storage conditions above 40 °C or direct exposure to sunlight can accelerate additive bloom and alter the coefficient of friction. The resin should be kept in a dry area below 60% relative humidity. Condensation on pellets transferred directly from cold ambient storage to a warm extruder can introduce surface defects. Mixing with amine-based stabilisers should be avoided unless compatibility has been confirmed, because interactions with the existing antioxidant package can shift stabilisation kinetics and reduce long-term thermal stability.
