| HS Code | 506772 |
| Density | 0.918 g/cm³ |
| Melt Flow Rate 190 C 2 16 Kg | 5.0 g/10 min |
| Tensile Strength At Yield | 11 MPa |
| Tensile Strength At Break | 12 MPa |
| Elongation At Break | 350% |
| Flexural Modulus | 300 MPa |
| Shore D Hardness | 52 |
| Melting Point | 122 °C |
| Vicat Softening Point 10 N | 100 °C |
| Brittleness Temperature | -70 °C |
| Notched Izod Impact Strength 23 C | No break |
As an accredited SABIC LLDPE 518NJ factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | SABIC LLDPE 518NJ is supplied in 25 kg sealed plastic bags, palletized and stretch-wrapped for safe transport and storage. |
| Container Loading (20′ FCL) | SABIC LLDPE 518NJ is packed in 25 kg bags, palletized, and loaded into a 20-foot full container for safe sea transport. |
| Shipping | SABIC LLDPE 518NJ is shipped as non-hazardous polyethylene pellets in 25 kg bags, jumbo bags, or bulk hopper trucks. Keep packaging sealed, dry, and away from direct sunlight and heat sources. Avoid contamination, sharp impacts, and excessive compression during transit to preserve material quality and flow properties. |
| Storage | Store SABIC LLDPE 518NJ in a clean, dry, well-ventilated area, protected from direct sunlight, moisture, and heat sources. Keep bags sealed when not in use to prevent contamination and dust accumulation. Avoid ignition sources and static electricity. No special temperature control is required; maintain moderate ambient conditions to preserve product quality and handling characteristics. |
| Shelf Life | Shelf life is indefinite when stored in a cool, dry, shaded area away from direct sunlight and excessive heat. |
In thin-wall dairy and margarine container production on high-cavitation hot-runner tools, the 50 g/10 min melt flow rate of SABIC LLDPE 518NJ measured at 190°C/2.16 kg per ISO 1133-1 permits filling of wall sections at 0.55–0.80 mm nominal thickness with flow length-to-thickness ratios beyond 180:1. The grade has density 0.918 g/cm³ per ISO 1183-1; this density imparts a balance of stiffness and sealability that supports food packaging under FDA 21 CFR 177.1520(c) for olefin polymers in contact with aqueous, acidic, and fatty foods, and under EU Regulation 10/2011 with overall migration below the 10 mg/dm² limit when tested in food simulants according to EN 1186-1. In such tools, melt temperature is held at 190–220°C, and mold temperature is maintained at 15–30°C to balance sink-mark resistance and cycle time. Injection speeds of 100–200 mm/s are used on accumulator-assisted machines, and packing pressure is set between 35–60 MPa for 0.8–1.5 s hold time. The low melt temperature side of the range should be selected for fatty food containers to minimize odor and taint; however, lowering melt temperature below 180°C increases viscosity and can produce flow hesitation in valve-gated drops. Batch-to-batch MFR variation should be controlled within ±10% to prevent short-shot drift in 32–64-cavity molds. On production lines with clamp force calculated at 3.5–5.0 kN/cm² of projected area, short shots in end-of-fill cavities are the primary failure mode when hot-runner manifold temperatures fluctuate more than ±5°C. Ejection is performed at a part surface temperature below 50°C; higher ejection temperatures lead to edge distortion in thin side walls. No drying is required for sealed packaging resin at relative humidity below 60%; if bulk storage in outdoor silos introduces surface moisture, a hopper air sweep at 60–80°C for 1–2 h is sufficient before processing. The terminal containers include round dairy cups, rectangular margarine tubs, and snap-fit overcaps; these parts are typically decorated by in-mold labeling or dry-offset printing. In-mold label adhesion relies on mold surface temperature above 90°C during label insertion; lower mold temperatures fail to melt the label outer layer and cause edge lift in frozen-food storage.
Mold filling in 64- to 128-cavity closure tools with valve-gated cold-runner drops reveals that warpage in integral hinges is governed primarily by frozen-layer asymmetry between the core and cavity sides. The resin’s 50 g/10 min MFR (ISO 1133-1) permits hinge thickness down to 0.25–0.35 mm without short shot, but the low flexural modulus of LLDPE, typically below 300 MPa when measured by ISO 178, requires hinge land length compensation to prevent closure snap-over force drift. Core temperature is set at 20–30°C and cavity temperature at 15–20°C to generate a thermal gradient that orients residual stress toward the cavity side; reversing this gradient produces bow across the top face of the closure. Melt temperature is maintained at 180–210°C, with the lower half of the range used for thick hinge bosses and the upper half for long-flow designs. Injection velocity profiling is critical: an initial slow stage of 20–40 mm/s for the gate vestige reduces jetting, followed by a fast fill stage of 120–180 mm/s to prevent weld-line weakness at the hinge ends. Packing pressure follows a stepped profile from 40 MPa for 0.5 s to 25 MPa for 2.0 s; overpacking closes the hinge gap and raises flexural whitening sensitivity. Hinge-cycle performance under repeated opening is validated by customer-specific tests; published data for this exact snap geometry is limited, and the resin should not be specified for load-bearing tamper-evident bands without a validation run. Environmental stress crack resistance in closure service is assessed by ASTM D1693 condition B; the grade exhibits ductile failure beyond 1,000 h in typical non-stressed closure geometries, but aggressive cleaning agents with surface-active wetting can reduce this value. The terminal closures include flip-top dispensing caps for personal care products, overcaps for deodorant sticks, and lightweight annular overcaps for aerosol cans. Pressure-containing carbonated beverage closures are outside the application boundary because LLDPE lacks sufficient top-load and barrier retention under carbonation; those designs require HDPE or PP with barrier liners.
High-cavitation household storage container tooling benefits from the short-chain branching of linear low density polyethylene, which raises environmental stress crack resistance relative to conventional high-pressure LDPE in the presence of detergents, oils, and stress concentrations at snap corners. The 50 g/10 min melt flow rate allows wall thickness reduction to 1.0–1.5 mm for stackable storage bins, but dropping below 0.9 mm introduces sink marks over locating ribs unless gas-assisted or expanded void designs are used. Melt temperature is set at 200–220°C to reduce viscosity in long flow paths; mold temperature is held at 20–35°C to balance dimensional stability and cooling time. Post-mold shrinkage is anisotropic, typically 1.5–2.0% in the flow direction and 1.0–1.5% transverse when determined by ISO 294-4 on 60×60×2 mm plaques; stackable designs require this differential to be mapped into mold dimensions, particularly in corner radii and lid grooves. ESCR testing per ASTM D1693 condition B in 100% Igepal CO-630 shows F50 values above 1,000 h for this resin class; exact lot-specific values should be confirmed because catalyst and comonomer distribution shift the failure distribution. Drop-impact behavior at -20°C remains ductile in 2 mm notched specimens tested by ISO 8256 type A, but floor-level impact in containers thinner than 1.2 mm can transition to brittle fracture at high strain rates. Housewares with food contact status are covered by FDA 21 CFR 177.1520(c) and EU Regulation 10/2011; repeated-use dishwasher exposure requires a durability validation at 65–75°C under alkaline detergent conditions because LLDPE softens above its Vicat softening point and may distort under stack load.
| Region/Use | Regulation or Standard | Test Method / Clause | Relevant Control Point |
|---|---|---|---|
| Food contact (US) | FDA 21 CFR 177.1520(c) | Olefin polymer clause | Use condition based on food type and temperature |
| Food contact (EU) | EU 10/2011 | Overall migration EN 1186-1 | < 10 mg/dm² for plastic food contact articles |
| Toys (EU) | EN 71-3 | Migration of certain elements | Colorant and additive selection only |
| Heavy metals | RoHS 2011/65/EU | IEC 62321 | No added Pb, Cd, Hg, Cr(VI) in resin formulation |
| REACH | EC 1907/2006 | SVHC Candidate List | Confirm no added SVHC above disclosure threshold |
Annular snap-fit overcap and tamper-evident skirt production uses the low crystallinity of SABIC LLDPE 518NJ to maintain undercut flexibility without whitening at ejection. Core-side undercuts of 0.3–0.6 mm depth are stripped from the core when part surface temperature is below 50°C; higher ejection temperature causes permanent deformation and reduces snap retention. The resin’s 0.918 g/cm³ density (ISO 1183-1) results in lower top-load stiffness than HDPE, but closure designs compensate by increasing sidewall draft to 1.5–2.0° and using continuous annular ribs. Melt temperature for these tools is set at 190–215°C, with injection velocity controlled at 80–160 mm/s to prevent jetting in center-gated closures. Packing pressure is limited to 25–40 MPa because overpacking raises ejection force and can collapse the tamper-evident band. Moisture barrier is a known constraint: LLDPE has a higher water vapor transmission rate than HDPE, so packages requiring a moisture barrier below 0.1 g·mm/m²·day need an induction foil or coated liner; the resin alone is not a high-barrier solution. Compliance for tamper-evident overcaps in pharmaceutical and personal care packaging follows FDA 21 CFR 177.1520(c) for food and non-food contact where applicable, and EU Regulation 10/2011 for food-adjacent uses. For cosmetics, the resin requires supporting documentation under EC 1223/2009 for substances migrating from packaging, but the polymer itself is not a cosmetic ingredient. Processing on high-speed closure machines with cycle times below 8 s is achieved using mold temperatures of 10–20°C and part ejection by air-assisted strippers. Trim waste from edge gates is reprocessed at up to 20 wt% with virgin resin without loss of undercut stripping performance, provided the regrind is free of printed label fragments and moisture. The terminal articles include snap overcaps for deodorant sticks, annular caps for cosmetic jars, and tamper-evident overshells for edible oil bottles.
Thin-wall seedling trays and propagation flats with flow lengths beyond 150 mm at 1.0 mm nominal wall challenge the viscosity of many LLDPE grades, but the high MFR of SABIC LLDPE 518NJ reduces injection pressure demand and permits filling of multi-row tray cavities without flash. In these molds, gate placement at the center of the tray floor is preferred over edge gating to equalize flow distance; when edge gating is unavoidable, the runner diameter is increased to 6–8 mm and hot-runner drops are spaced no more than 80–100 mm apart. Melt temperature is raised to 210–230°C for thin sections, while mold temperature is set at 20–35°C to maintain flow and reduce surface freeze-off. Injection velocity is increased to 180–250 mm/s on machines with accumulator-assisted hydraulic or electric injection units; lower velocities produce flow hesitation and visible knit lines at the intersection of ribbed tray cells. Venting is a critical boundary: PE melts require vent depth of 0.02–0.04 mm and land length below 1.0 mm to avoid gas burn at the end of fill. Vacuum-assisted venting at -0.6 to -0.8 bar is applied in cavity volumes with blind ribs. Shrinkage in long flow directions is influenced by flow-induced orientation; transverse dimensions may shrink 0.4–0.8% less than flow-direction dimensions, and tray flatness is controlled by post-mold cooling fixtures held at 15–25°C for 8–12 s. The material should not be processed above 240°C for prolonged residence time because thermal degradation generates odor and surface tack; if a shutdown exceeds 15 min, the barrel should be purged with HDPE or purging compound. The operational limitation for this application is not melt strength but gate-stringing at high runner temperature; valve gates or hot-tip gates with positive shutoff are required to prevent stringing in high-speed degating. Terminated parts include nursery propagation trays, greenhouse flats, and capillary mat trays; these parts must be evaluated under ISO 4892-2 for UV weathering if used outdoors, and carbon black or hindered amine stabilizer packages are normally added by the compounder.
| Application sector | Melt temperature (°C) | Mold temperature (°C) | Injection speed (mm/s) | Pack pressure (MPa) | Critical control |
|---|---|---|---|---|---|
| Thin-wall dairy containers | 190–220 | 15–30 | 100–200 | 35–60 | Hot-runner manifold stability ±5°C |
| Integral-hinge closures | 180–210 | Core 20–30, cavity 15–20 | 20–40 to 120–180 | 40 then 25 | Frozen-layer asymmetry |
| Houseware storage containers | 200–220 | 20–35 | Profile fill | 30–50 | Anisotropic shrinkage mapping |
| Tamper-evident overcaps | 190–215 | 10–20 | 80–160 | 25–40 | Ejection surface temperature <50°C |
| Seedling trays | 210–230 | 20–35 | 180–250 | 30–45 | Vent depth 0.02–0.04 mm |
| Personal care caps | 190–210 | 15–25 | 60–120 | 45–60 | Cushion 2–5 mm, switch-over 90–95% |
Dimensional stability in small-diameter personal care caps depends on gate freeze-off control, pack pressure decay, and ejection temperature uniformity. SABIC LLDPE 518NJ has a narrow processing window in high-speed cap tools when cavity diameter tolerances are held at ±0.1 mm; screw cushion is maintained at 2–5 mm to provide consistent switch-over and avoid non-return valve leakage. Switch-over from injection to pack pressure is set at 90–95% of screw stroke, not by timer, to reduce cavity-to-cavity mass variation in 24–96-cavity cold-runner tools. Pack pressure profile starts at 45–60 MPa and decays over 1.5–3.0 s while the gate remains unfrozen; premature pressure release generates sink marks around the cap center boss, while excessive pack pressure increases demolding force and ovality. Mold temperature uniformity is controlled within ±5°C across the cavity block using turbulent water flow at 15–25°C; zones with lower flow produce larger post-mold shrinkage and out-of-round conditions. The low density and narrow molecular weight distribution of this resin reduce shear heating during fast filling, but screw speed above 100 rpm at back pressure below 5 bar can introduce unmelted pellets and viscosity variation. Batch-to-batch MFR should be checked at incoming inspection by ISO 1133-1; lot acceptance at 47–53 g/10 min is recommended for tight-tolerance cap production. Dimensional capability is assessed on a capability study using ISO 294-4 shrinkage plaques and on actual parts with coordinate measuring systems calibrated to ISO 10360-2; published data for this exact cap geometry is limited, so pilot tool validation remains mandatory. The grade is suitable for non-pressurized cap and plug applications in personal care, pharmacy overcap, and tube closure assemblies where low torque removal and snap fit are primary requirements. Designs requiring high top-load retention at elevated warehouse temperatures above 50°C should be validated because LLDPE loses stiffness as temperature approaches its Vicat softening point; HDPE or PP may be more appropriate for hot-fill or high-stack warehouse conditions.
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SABIC LLDPE 518NJ is a butene-copolymer linear low density polyethylene characterized by a nominal density of 0.918 g/cm³ under ISO 1183-1 and a melt flow rate of 1.0 g/10 min at 190 °C/2.16 kg under ISO 1133-1:2022. The resin is produced on a Ziegler-Natta catalyst platform and is positioned for blown-film extrusion where bubble stability, draw-down behavior, and seal response are production-critical. The grade is converted in monolayer and coextruded structures at thicknesses from 20 µm to 80 µm, with film mechanical performance reported under ISO 527-3, ISO 6383-2, and ISO 7765-1. The numerical identity of the material is defined by the density/MFR pair; film-level properties such as dart impact, tensile strength, and tear resistance are process-dependent and cannot be treated as fixed constants without specifying die gap, blow-up ratio, frost-line height, and gauge profile.
Molecular architecture of 518NJ is characteristic of a Ziegler-Natta butene copolymer: a polydispersity generally above 3.5, a low-molecular-weight tail that promotes shear thinning, and a short-chain branch distribution dominated by ethyl branches. The nominal density of 0.918 g/cm³ corresponds to a moderate short-chain branch level relative to a high-pressure LDPE or a C6-LLDPE at equal density. The melt flow rate of 1.0 g/10 min places the resin in the low-MFR film class, which favors toughness and bubble stability while increasing shear viscosity. The high-load melt flow rate at 190 °C/21.6 kg is not always reported in public datasheets; capillary rheometry covering shear rates from 0.1 s⁻¹ to 1000 s⁻¹ should be obtained from the supplier for screw design and die pressure calculations. Single-point MFR is not sufficient to model production-scale melt pressure or melt fracture onset.
The primary specification release for 518NJ is based on the density and MFR pair. Density is measured on conditioned compression-moulded plaques at 23 °C; melt flow rate is determined at 190 °C with a 2.16 kg piston load on stabilized granulate. Thermal characterization includes a melting peak temperature under ISO 11357-3, usually 122–126 °C on second heating, and a Vicat softening temperature under ISO 306/A50, typically 95–100 °C. These thermal values are used for converting operations involving warm filling or short-term heat exposure. The table below lists the minimum analytical and specification compliance set for incoming resin certification.
| Property | Method | Hardware or reporting basis |
|---|---|---|
| Density | ISO 1183-1:2019 | Gradient column or gas pycnometer, 23 °C |
| Melt flow rate | ISO 1133-1:2022 | 190 °C, 2.16 kg |
| Tensile properties | ISO 527-3:2018 | Controlled gauge film, 500 mm/min |
| Elmendorf tear | ISO 6383-2:1983 | Pendulum tear tester |
| Dart impact | ISO 7765-1:1988 | F50 staircase method |
| Haze | ISO 14782:2021 | Integrating sphere hazemeter |
| Gloss | ISO 2813:2014 | 60° specular geometry |
On monolayer blown-film lines, 518NJ is processed at melt temperatures between 190 °C and 230 °C, with die gaps from 1.8 mm to 2.4 mm and blow-up ratios of 2.0:1 to 3.0:1. Frost-line height is held between 6 and 9 die diameters; shorter frost lines reduce haze but encourage blocking, while taller frost lines stabilize the bubble but reduce dart impact. On a 90 mm grooved-feed extruder with a 30D barrier screw and 250 mm spiral mandrel die, the resin shows a broader shear-thinning response than a metallocene LLDPE of equal MFR. This broader distribution reduces high-shear viscosity at the die lip and lowers relative melt pressure, but increases die swell and can worsen gauge uniformity if the die gap is below 2.0 mm. Actual melt pressure values are specific to adapter length, screen-pack mesh, die geometry, and screw wear; they should be read from production-scale pressure transducers rather than extrapolated from capillary rheometry.
The melt fracture boundary is a practical operating limit. At high specific output through narrow die gaps, 518NJ can develop sharkskin roughness on the external film surface. The onset of this defect is shifted by melt temperature, die gap, and frost-line interaction; increasing the die gap to 2.4 mm or raising melt temperature to 225–230 °C suppresses sharkskin in most annular die geometries. Converters using internal bubble cooling typically reach higher take-off speed before bubble instability than external-only air-ring lines because the internal air stream cools the inner surface and adds radial stabilization. Published critical shear rate data for this specific 518NJ configuration is limited; start-up trials should map gauge variation against haul-off speed and blow-up ratio on the actual die diameter.
High-speed conversion of 518NJ on air-cooled blown-film lines is bounded by three interacting limits: melt temperature, die-lip shear, and frost-line turbulence. Melt temperatures below 190 °C increase back pressure and promote surface defects; temperatures above 240 °C can destabilize the bubble and degrade the stabilizer package. Die gaps below 1.8 mm raise die-lip shear stress and produce flow instabilities; gaps above 2.5 mm reduce shear but lower draw-down capability and can increase gauge variation. Frost-line turbulence from variable ambient air flow is controlled by maintaining the annular air-ring pressure below the point of bubble oscillation. The practical operating compromise is to hold the frost line at 7–9 die diameters, use a dual-lip air ring, and monitor gauge profile with a rotating capacitance gauge. Film should be tested for dart impact under ISO 7765-1 Method A and Elmendorf tear under ISO 6383-2 at the same gauge and blow-up ratio used in production.
The grade is supplied with a film extrusion stabilization package including a processing antioxidant and acid scavenger. Slip and antiblock loadings are not always itemized in the public datasheet; converters requiring a target coefficient of friction or blocking force must verify film surface chemistry before specifying corona treatment. Surface tension after corona treatment is measured with test inks according to ISO 8296, and the resulting level must be confirmed at the lamination or printing station. In high-humidity environments above 60% RH, surface condensation on cold pellets should be prevented at the feed throat because liquid water on the pellet surface disrupts feed stability and introduces surface defects in the melt.
Cast-film evaluation of 518NJ differs from blown-film characterization. The resin can be extruded on cast lines at melt temperatures of 230–260 °C and chill-roll temperatures of 20–40 °C; however, the resulting film morphology, haze, and dart impact are more sensitive to melt draw and quenching rate than in air-cooled blown film. The grade is not the primary option for high-clarity cast film because Ziegler-Natta C4-LLDPE generates a broader crystallite distribution and higher haze than a metallocene cast grade. If cast conversion is required, the die gap should be held near 0.8 mm and the air-knife position adjusted to minimize neck-in. Surface tension should again be monitored under ISO 8296 before lamination or printing.
Down-gauging trials with 518NJ below 25 µm expose the impact-tear trade-off. At 18 µm, dart impact values fall sharply and may fail low F50 limits unless blow-up ratio and frost-line height are adjusted upward. Elmendorf tear measured under ISO 6383-2 becomes highly anisotropic; machine-direction tear is lower than transverse-direction tear. This orientation effect is intrinsic to blown LLDPE film and is controlled by high-stalk bubble geometry, die gap, and the rate of melt relaxation before the frost line. The film should not be down-gauged below the tested gauge without repeating dart impact and tear measurements because the relationship between thickness and energy absorption is non-linear.
Blending 518NJ with high-pressure LDPE changes the bubble deformation behavior and reduces draw resonance. LDPE addition in the range of 10–30 wt% is typical on conventional air-cooled lines; the addition improves bubble stability and lowers haze sensitivity to melt temperature, but reduces dart impact under ISO 7765-1 and increases melt extensibility under ISO 527-3. The balance is machine-specific; converters using grooved-feed extruders can run 518NJ neat at higher torque than LDPE-rich blends because the lower melt friction reduces motor load. Continuous monitoring of extruder amps and melt-pressure ripple detects batch-to-batch variation.
Transition from a C6-LLDPE to 518NJ on the same line requires purging with a lower-viscosity LDPE or LLDPE to remove higher-molecular-weight residues. The broader molecular weight distribution of 518NJ can retain pigments in dead zones, so color-change protocols should extend the purging period even when melt pressure has stabilized. Residual contamination is judged by film gel count and absence of specks, not solely by extruder amps or pressure ripple.
In heavy-duty film applications, replacing a C6-LLDPE with 518NJ requires a rebalanced film construction. C6-LLDPE grades of equal density and melt flow rate generally provide higher dart impact, higher machine-direction Elmendorf tear, and improved puncture resistance under ISO 7765-1, ISO 6383-2, and ASTM D5748. The difference originates from the longer hexene branch disrupting crystallinity more effectively than butene at the same density. For conversion-grade film at 50 µm, the butene-based resin may require upward gauge adjustment or blending with C6-LLDPE to meet a specified dart impact. The seal initiation temperature of 518NJ is typically comparable to other Ziegler-Natta C4-LLDPE grades and higher than a metallocene plastomer; heat-seal strength is measured according to ASTM F88 at the actual dwell time and pressure of the packaging line. Blending with high-pressure LDPE improves bubble stability and MD tear balance, but LDPE addition also lowers dart impact and increases haze under ISO 14782.
The substitution also changes rheological and thermal behavior. C6-LLDPE often exhibits a somewhat narrower molecular weight distribution and higher elongational viscosity during bubble expansion; 518NJ may be processed at lower melt temperature or higher throughput because of its broader shear-thinning distribution. However, the lower dart impact contribution must be offset by film design rather than by additional heat. If dart impact is non-negotiable, a C6-LLDPE blend or a gauge increase is usually required; the exact blend ratio depends on the line and end-use specification. Published experimental data for this specific 518NJ blending configuration is limited, and production-scale statistically designed trials should be used to set the ratio.
Resin-positioning decisions are made by comparing 518NJ with metallocene LLDPE and with Ziegler-Natta C6-LLDPE on the same extrusion line and film gauge. Metallocene grades offer lower haze, higher gloss, and better organoleptic performance under ISO 14782 and ISO 2813, but their narrow molecular weight distribution and lower melt strength can limit bubble stability in deep-freeze film lines. 518NJ has the process robustness of a Ziegler-Natta C4-LLDPE and is less sensitive to melt-pressure surge, but it is not equivalent to metallocene grades in low-temperature impact or clarity. Against a Ziegler-Natta C6-LLDPE, 518NJ typically shows a lower dart impact and tear contribution at equal density and melt flow rate. Applications requiring high clarity or low-temperature toughness should not be approved without production film data generated under ISO 7765-1 and ISO 14782.
In coextruded structures, 518NJ is placed in core or skin layers where its low gel tendency and bubble stability are useful. The term “low gel tendency” is process-dependent and must be verified by film-quality inspection; gel count is assessed visually or with camera inspection systems at controlled thickness. In lamination-grade film, the corona-treated surface should achieve 38–42 mN/m under ISO 8296 for water-based adhesives and 42–46 mN/m for solventless lamination. These values decay with storage time and are influenced by slip additive migration; lamination should be scheduled as soon as possible after treatment or within the window defined by the adhesive supplier.
The resin has a compliance profile relevant to food-contact film structures, but finished-film compliance is converter-specific. Bulk resin certification must be combined with migration testing on the final package. The table below summarizes the regulatory applicability matrix.
| Regulatory framework | Scope | Applicability to 518NJ film |
|---|---|---|
| EU Regulation 10/2011 | Plastic materials intended for food contact | Finished film requires overall and specific migration testing |
| FDA 21 CFR 177.1520 | Olefin polymers in food contact | Applies when film meets extractable fraction and end-use conditions |
| REACH EC 1907/2006 | Registration and authorization of substances | Bulk polymer registration; additive compliance confirmed via SDS |
| RoHS 2011/65/EU | Restriction of hazardous substances | Relevant for film used in equipment rather than packaging |
Commercial use of 518NJ in food packaging requires verification of organoleptic performance, overall migration under EN 1186-1:2002, and specific migration of additives under the applicable EN 1186 series. Grades containing slip and antiblock additives may show higher surface extractables than unfilled polymer; the final film must be tested in the intended food simulant rather than assumed compliant from resin certification alone.
