| HS Code | 670874 |
| Density | 0.918 g/cm³ |
| Melt Flow Rate 190 C 2 16 Kg | 0.8 g/10 min |
| Melting Point Dsc | 122 °C |
| Vicat Softening Point A50 | 100 °C |
| Tensile Strength At Yield Md | 9 MPa |
| Tensile Strength At Yield Td | 8 MPa |
| Elongation At Break Md | 350 % |
| Elongation At Break Td | 600 % |
| Dart Drop Impact F50 | 110 g |
| Haze | 8 % |
| Gloss 60 | 60 units |
| Coefficient Of Friction Dynamic | 0.2 |
As an accredited SABIC LLDPE 118WJ factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in 25 kg multi-layer paper/PE bags, palletized and stretch-wrapped for safe transport and storage. |
| Container Loading (20′ FCL) | Loaded as 25 kg bags on shrink-wrapped pallets, approximately 20 metric tons per 20′ FCL, securely stowed. |
| Shipping | SABIC LLDPE 118WJ is a linear low-density polyethylene resin supplied as free-flowing pellets. Designed for injection molding applications requiring excellent impact strength and flow. Available in 25 kg bags or bulk carriers. Store in a dry, clean environment away from heat and direct sunlight. Prevent contamination and dust during handling. |
| Storage | Store SABIC LLDPE 118WJ in a clean, dry, well-ventilated area away from direct sunlight, heat sources, and open flames. Keep pellets in original sealed packaging or closed silos to prevent moisture pickup and contamination. Ideal temperature is below 40°C. Avoid prolonged storage under high humidity; use within one year for best processing and performance. |
| Shelf Life | SABIC LLDPE 118WJ has an indefinite shelf life when stored indoors, away from direct sunlight, heat, and moisture. |
Blown-film conversion of agricultural mulch and silage bale wrap around SABIC LLDPE 118WJ begins with dry blending of the base resin, characterized by density 0.918 g/cm³ per ISO 1183-1:2019 and melt flow rate 1.0 g/10 min per ISO 1133-1:2022, with single-site or LDPE modifiers. For conventional black mulch films at 25–60 µm gauge, the formulation uses 93–96 wt% LLDPE 118WJ, 2–5 wt% carbon black/UV masterbatch, and 1–2 wt% graphite or processing-aid masterbatch; for silage bale wrap at 25–50 µm, the base resin is blended with 10–20 wt% metallocene or VLDPE and 2–3 wt% cling agent masterbatch. On production blown-film lines with 75–90 mm grooved-feed extruders, 30:1 L/D barrier screws, and 300–500 mm spiral mandrel dies, the melt is processed at 190–210°C through 1.8–2.4 mm die gap at a blow-up ratio of 2.2:1–3.0:1; frost line height is held at 6–9 die diameters to maintain crease-free bubble geometry. Internal bubble cooling and segmented air rings maintain thickness tolerance of ±5%. Compliance under EN 13655:2018 covers conventional polyethylene mulch film recovery after use, while silage bale stretch film is assessed against EN 14932:2018; tensile properties are verified by ASTM D882-18 or ISO 527-3:2018, dart impact by ASTM D1709-22, and density by ASTM D1505-18 if incoming material validation is required. Terminal products include single-season black, white-on-black, and clear mulch films, plus 750 mm-wide silage bale wrap rolls. Warehousing at relative humidity above 60% requires sealed hoppers or pre-drying because surface moisture on pellets is a documented source of gel-like fisheyes and bubble instability in thin-gauge agricultural film.
Three-layer heavy-duty shipping sack and flexible intermediate bulk container liner structures built with LLDPE 118WJ use the resin as the core layer at 60–85 wt% because its 1.0 g/10 min MFR and 0.918 g/cm³ density sustain bubble stability while imparting downgauged impact resistance. The skin layers are formulated with 15–25 wt% LDPE or high-pressure polyethylene to improve draw and seal, plus 1–3 wt% slip/antiblock masterbatch in the outer plies and 0.1–0.5 wt% fluoropolymer processing aid to suppress melt fracture at high output. Coextrusion lines run 2.0–2.5 mm die gaps, 2.0:1–2.8:1 blow-up ratios, 195–215°C melt temperatures, and a 20/60/20 layer distribution across 250–400 kg/h total throughput. Field observations from lines with 30:1 L/D grooved-feed extruders show that core-layer 118WJ content above 85 wt% increases frost-line height variability unless the outer skin layer melt is kept above 210°C; this is controlled by increasing outer-layer extruder barrel temperatures in the metering zone to 205–215°C. Compliance is verified by ASTM D1709-22 Method A dart drop, ASTM D1922-23 Elmendorf tear, ISO 527-3:2018 tensile, and ASTM D1894-14 coefficient of friction. Dangerous-goods sacks may additionally be subject to ADR 6.1.5 packaging requirements when the material is used in FIBC liners. Terminal products include 25 kg resin and petrochemical shipping sacks, form-fill-seal heavy-duty sacks, and 100–200 µm industrial liners. A documented processing boundary is that outer-layer slip/antiblock masterbatch above 3 wt% reduces interlayer bond strength in sacks exposed to high stacking load.
Direct food-contact form-fill-seal films and sealant webs built with LLDPE 118WJ require migration compliance under FDA 21 CFR 177.1520(c) for olefin polymers, EU 10/2011/EC as amended with an overall migration limit of 10 mg/dm² or 60 mg/kg for multilayer food simulant contact, and good manufacturing practice under EC 2023/2006. REACH Regulation 1907/2006 Annex XVII restrictions on substances of very high concern apply to the masterbatch components and not to the base polyolefin when compliant feedstocks are used. In monolayer and three-layer sealant films, LLDPE 118WJ is used at 60–85 wt% with 15–40 wt% LDPE or metallocene PE to lower seal initiation temperature and improve hot-tack through the jaw cycle; slip/antiblock masterbatch is typically added at 0.5–1.5 wt%, and the base stabilization package includes 0.1–0.3 wt% antioxidant. Blown-film conversion uses 1.8–2.2 mm die gaps, 2.2:1–2.8:1 blow-up ratios, melt temperatures of 185–210°C, and corona treatment to 38–42 mN/m surface energy after treating. Sealing performance on vertical form-fill-seal machines is specified by hot tack per ASTM F1921-12(2018) and seal strength per ASTM F88/F88M-23; production lines report stable seal initiation between 100°C and 110°C at 0.4 N/mm² jaw pressure. Terminal products include frozen food bags, cereal liners, pouch stock, and bag-in-box inner liners. Processors should verify specific migration of low-molecular-weight oligomers against EU 10/2011 simulant D2 if the film is used above 60°C with fatty foods; published data for this specific configuration is limited.
Cast-film stretch and collation overwrap conversion with LLDPE 118WJ as the core or intermediate layer requires the resin to be introduced at 80–95 wt% in the core, with the cling and release skin layers formulated from metallocene polyethylene and 2–3 wt% tackifier masterbatch. The cast line is configured with a 0.6–0.8 mm flat die lip gap, melt temperature of 240–260°C, and a 1,200–2,500 mm die width feeding a polished chill roll held at 18–25°C; air-knife pressure is set at 5–10 kPa and edge pinning is used to prevent web narrowing at line speeds of 300–600 m/min. Rapid quench suppresses large crystalline domains and improves tensile stretch force retention in pre-stretched applications; production trials show that chill roll temperatures below 15°C create condensation defects and are outside the normal control window. Performance is checked by ASTM D5748-95(2019) for protrusion puncture resistance, ASTM D5458-95(2020) for cling of stretch wrap, and ISO 527-3:2018 for tensile properties; food-contact wrap grades also require FDA 21 CFR 177.1520 or EU 10/2011 compliance. Terminal products include 15–23 µm machine-grade stretch film, pre-stretched manual roll film, and collation overwrap film. A documented process limitation is that die-lip build-up at high line speed is controlled with 0.1–0.3 wt% fluoropolymer processing aid; without it, edge weave and film splitting occur after 4–6 h of continuous production.
Extrusion lamination of aluminium barrier structures with LLDPE 118WJ as the sealing web or coating layer operates at 60–85 wt% 118WJ blended with 15–30 wt% LDPE to reduce neck-in and improve melt draw. When bonding directly to aluminium foil or metallised substrates, a coextruded tie layer of maleic anhydride-modified polyethylene at 5–10 wt% of total coating weight is required; without the tie layer, adhesion loss occurs after retort or acidic filling. The line uses 0.8–1.2 mm flat die lip gap, 280–300°C melt temperature, 150–250 mm air gap, and a chill roll at 12–18°C; coating weight is maintained at 15–25 g/m² for sachet and stand-up pouch laminates. Adhesion is tested per ASTM D1876-08(2015)e1 T-peel, and lamination bond strength after heat ageing is assessed on production samples. Direct food contact in laminated flexible packaging falls under EU 10/2011 and FDA 21 CFR 177.1520. Terminal products include foil-containing sachets, stand-up pouches, and aseptic carton lamination. Field data indicate that coating weights below 15 g/m² promote pinholes and inconsistent foil adhesion on lines without vacuum box edge control; processors should verify pinhole performance under ASTM F1306-21 slow-rate penetration testing before release.
Greenhouse covering and low-tunnel structures using LLDPE 118WJ at final thicknesses of 100–200 µm are compounded with 80–90 wt% base resin, 10–20 wt% LDPE or EVA for thermal durability and bubble stability, 3–5 wt% UV/HALS masterbatch, 1–2 wt% antifog concentrate, and 2–4 wt% IR absorber or diffusing concentrate where heat retention is specified. Processing on blown-film lines uses 2.0–2.4 mm die gap, 2.5:1–3.5:1 blow-up ratio, 180–200°C melt temperature, and internal bubble cooling to stabilize cooling at output rates above 300 kg/h. Product compliance follows EN 13206:2017 for thermoplastic covering films for agriculture and horticulture, while tensile properties are verified under ISO 527-3:2018 and tear propagation under ASTM D1922-23; accelerated weathering for multi-season covers is conducted per ISO 4892-2 cycle 1. Terminal products include multi-season greenhouse covers, low-tunnel perforated film, and solarization film. A formulation boundary is that antifog masterbatch levels above 2 wt% reduce dart impact resistance and increase surface bloom; published multi-season weathering data for LLDPE 118WJ in high-humidity greenhouses is limited, so processors should validate on their own structures.
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SABIC LLDPE 118WJ is a linear low-density polyethylene intended for blown-film extrusion. The grade is supplied as pellets and is distinguished from high-pressure low-density polyethylene by a linear backbone with short-chain branching, which affects melt rheology, bubble stability, seal behaviour, and tear resistance under converting conditions. Nominal lot values commonly place the density at 918 kg/m³ when tested to ISO 1183-1:2019 and the melt mass-flow rate at 1.0 g/10 min when tested to ISO 1133-1:2022 at 190 °C and 2.16 kg. These two parameters define the general placement of the grade within the LLDPE film family: a medium-viscosity, moderate-density resin for general-purpose packaging film.
Film properties are not equivalent to pellet specification values. Converted-film data necessarily depend on die geometry, blow-up ratio, frost-line height, output rate, and downstream treatment. The values reported for SABIC LLDPE 118WJ should therefore be read as typical values generated on a defined monolayer structure, not as release limits. Lot-specific certificates of analysis remain the controlling reference for commercial acceptance.
The following profile is drawn from supplier technical documentation and is representative for a 50 µm monolayer blown film processed at a blow-up ratio of 2.5:1 through a 2.0 mm die gap. Directional values are reported for machine direction and transverse direction, respectively. These values are not normalised against line-specific gauge variation, and individual converters should expect measurable deviation on production-scale equipment.
| Property | Unit | Typical value | Test method |
|---|---|---|---|
| Melt mass-flow rate | g/10 min | 1.0 | ISO 1133-1:2022 |
| Density | kg/m³ | 918 | ISO 1183-1:2019 |
| Tensile stress at yield, MD/TD | MPa | 11 / 11 | ISO 527-3 |
| Tensile stress at break, MD/TD | MPa | 38 / 32 | ISO 527-3 |
| Elongation at break, MD/TD | % | 800 / 900 | ISO 527-3 |
| Dart drop impact F50 | g | 150 | ISO 7765-1:2014 |
| Haze | % | 15 | ISO 14782 |
| Vicat softening temperature | °C | 100 | ISO 306 |
On blown-film monoextrusion lines using 50–70 mm grooved-feed extruders with 24:1 to 30:1 L/D ratios, SABIC LLDPE 118WJ is typically processed at barrel set points between 180 °C and 210 °C. Melt temperature at the die should remain at or above 195 °C when running narrow die gaps below 1.5 mm to reduce the probability of sharkskin melt fracture. Die gaps of 1.5–2.5 mm and blow-up ratios of 2.0:1 to 3.0:1 are common in monolayer and coextruded structures. Because the resin lacks the long-chain branching of autoclave LDPE, bubble edge oscillation and bubble sag can occur at high lay-flat widths or high haul-off speeds. Processors frequently stabilise the bubble by blending 5–20 wt% high-pressure LDPE or by increasing frost-line height to 6–10 die diameters. At relative humidity above 60 %, surface moisture adsorption can increase haze and promote pinhole formation; hopper drying at 70 °C for 1–2 h with dehumidified air is recommended when damaged packaging or extended outdoor storage is suspected.
Frost-line height exerts a narrow control window on the tear and impact balance of SABIC LLDPE 118WJ. Raising the frost line from 6 to 10 die diameters on a 50 µm monolayer film increases transverse orientation and can reduce dart impact strength by approximately 20 % relative to the shorter frost-line condition. Lowering the frost line below 5 die diameters freezes orientation less completely and tends to produce higher haze and reduced machine-direction tear. The practical optimum for many monolayer structures is therefore 6–8 die diameters. Die-temperature variation of ±5 °C around a 200 °C set point can alter bubble height and blow-up ratio sufficiently to shift gauge profile by more than ±5 %, particularly on lines without automatic gauge control. This sensitivity is not unique to 118WJ, but it is operationally significant because the resin’s linear structure provides less melt elasticity to absorb bubble disturbances than branched LDPE.
The substitution of LDPE with SABIC LLDPE 118WJ in heavy-duty sack film is driven by the linear resin’s higher tensile yield strength, higher elongation at break, and superior dart impact at equivalent gauge. At the same film thickness, the LLDPE grade can allow gauge reduction of 10–20 % before puncture resistance falls to the level of a conventional 200 µm LDPE sack structure. The trade-off is reduced bubble stability. LDPE provides melt elasticity through long-chain branching, whereas 118WJ relies on molecular weight distribution and processing temperature. Coextruded heavy-duty sack structures therefore often use 118WJ in the core or inner layer while retaining LDPE in the outer layer for bubble support and surface gloss. Seal initiation temperature may be lower for 118WJ than for high-pressure LDPE, but the actual seal window depends on sealant-layer composition, dwell time, and sealing pressure. Converters should verify hot-tack and seal-strength performance using the finished laminate rather than extrapolating from resin density alone.
Compared with SABIC LLDPE 218WJ, a higher-MFR LLDPE grade with nominal melt flow rate near 2.0 g/10 min, the 118WJ grade has higher melt viscosity and higher melt strength. This provides improved bubble stability and greater dart impact at equal film gauge, but it also increases backpressure on the extruder and may require a reduction in screw speed of 10–15 % to keep motor load below 85 % on the same grooved-feed line. Compared with metallocene-catalysed LLDPE grades of equivalent density and melt flow rate, SABIC LLDPE 118WJ generally exhibits a broader molecular weight distribution and more heterogeneous comonomer incorporation. The broader distribution usually improves extrusion processability and reduces melt fracture sensitivity, but it can produce lower clarity and lower dart impact than metallocene LLDPE at the same melt index and density. In applications where film optics are not primary, such as can liners, agricultural mulch, carrier bags, and industrial liners, the Ziegler-Natta architecture of 118WJ offers a lower-cost balance of toughness and processability. Where haze below 10 % or very high dart impact is required, a metallocene LLDPE or a blend containing metallocene resin may be more suitable.
| Regulatory reference | Scope | Condition or status |
|---|---|---|
| EU Regulation (EC) No 10/2011 | Plastic materials intended for food contact | Compliance in the finished article depends on layer structure, thickness, food simulant, and overall migration testing; the supplier food-contact statement should be requested for the specific lot. |
| FDA 21 CFR 177.1520 | Olefin polymers for food contact | Acceptable for use subject to conditions of use and end-use limitations; the converter is responsible for suitability in the finished article. |
| REACH (EC) No 1907/2006 | Registration and SVHC content | Based on supplier safety data sheet, no supplied substance of very high concern is present above 0.1 % w/w. |
| Directive 94/62/EC | Packaging and packaging waste heavy-metal limits | When certified, the sum of lead, cadmium, mercury, and hexavalent chromium is below 100 ppm by weight in packaging components. |
Storage of SABIC LLDPE 118WJ should be conducted in a dry, enclosed area at temperatures below 40 °C, away from direct sunlight and oxidising agents. Prolonged storage beyond 12 months from the date of supply can shift stabiliser performance and increase the probability of gel formation. Lots held beyond this interval should be rechecked for melt mass-flow rate and density before extrusion. Cross-contamination with ionomers, ethylene-vinyl alcohol copolymers, or anhydride-grafted polyolefins should be avoided in storage and blending; such contaminants can produce localised gels, delamination in coextruded film, and die-lip deposit accumulation. Published production-scale data for this specific configuration is limited, so process settings and film properties should be validated on the converter’s own line rather than accepted as universal conditions.
