| HS Code | 924861 |
| Density | 0.918 g/cm³ |
| Melt Flow Rate | 1.0 g/10 min |
| Melting Point | 122 °C |
| Vicat Softening Point | 100 °C |
| Tensile Yield Strength | 11 MPa |
| Tensile Break Strength | 20 MPa |
| Elongation At Break | 700 % |
| Flexural Modulus | 340 MPa |
| Shore D Hardness | 52 |
| Brittleness Temperature | -70 °C |
As an accredited SABIC LLDPE 118LJ factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | SABIC LLDPE 118LJ is supplied in 25 kg net polyethylene bags, palletized and stretch-wrapped for secure handling and transport. |
| Container Loading (20′ FCL) | SABIC LLDPE 118LJ is loaded as 25 kg bags into a 20′ FCL, palletized, weighing about 20 metric tons. |
| Shipping | SABIC LLDPE 118LJ is shipped as a non-hazardous linear low-density polyethylene resin. It should be transported in clean, dry containers, preferably in original sealed bags or bulk hoppers, protected from moisture, excessive heat, and direct sunlight. Ensure proper ventilation and secure loading; avoid contamination and sharp objects during handling and transit. |
| Storage | Store SABIC LLDPE 118LJ in a dry, clean, well-ventilated area away from direct sunlight, heat, and open flames. Keep packaging sealed to prevent contamination and moisture absorption. Avoid contact with strong oxidizing agents. No special storage conditions are required under normal handling. Maintain moderate temperatures and follow standard industrial hygiene practices. |
| Shelf Life | SABIC LLDPE 118LJ has an indefinite shelf life when stored in original, unopened packaging under dry, cool conditions away from sunlight. |
In blown food packaging applications, SABIC LLDPE 118LJ is processed on monolayer and coextruded blown film lines with die diameters from 160 mm to 400 mm and die gaps between 1.2 mm and 2.0 mm. The grade exhibits a density of 0.918 g/cm³ according to ISO 1183-1 and a melt flow rate of 1.0 g/10 min according to ISO 1133-1:2022 at 190°C/2.16 kg. Melt temperatures are held between 190°C and 215°C; temperature profiles usually rise from 140°C in the feed zone to 200°C at the adapter. Blow-up ratios of 2.2:1 to 3.0:1 and frost line heights of 300 mm to 600 mm on a 250 mm die maintain bubble stability for film thicknesses from 20 µm to 50 µm. A 65 mm extruder with 24:1 L/D and a barrier screw typically becomes screw-limited only when melt pressure exceeds 350 bar; in practice, bubble cooling capacity limits output when internal bubble cooling air temperature rises above 35°C. Pre-drying is not normally required when resin is stored below 50°C and in intact bags; if hopper moisture exceeds 200 ppm, melt pressure surging and bubble holes can occur. Slip and antiblock masterbatches are dosed at 0.5 wt% to 1.5 wt% to achieve a coefficient of friction below 0.30 under ISO 8295. Film tensile properties are evaluated according to ISO 527-3 using type 2 specimens at 500 mm/min. Dart impact is measured with ASTM D1709 Method A; a converter specification of 70 g minimum at 40 µm is commonly applied, and lower values trigger adjustment of frost line height or die gap rather than addition of process aids. For food-contact packaging, the resin is assessed under FDA 21 CFR 177.1520 for olefin polymers and under (EU) No 10/2011 with an overall migration limit of 10 mg/dm². Finished articles include bread bags, frozen food bags, produce bags, and light overwrap where the sealant layer is blown as part of a three-layer coextrusion with LDPE or EVA skins.
The use of 118LJ as the heat-seal layer in duplex and triplex flexible packaging introduces a seal initiation window that converters must verify against substrate thermal conductivity. For butene LLDPE with a density of 0.918 g/cm³, seal initiation temperatures are typically reported between 98°C and 106°C when measured on flat-jaw heat-seal equipment at 0.3 MPa pressure and 1.0 s dwell using 40 µm monolayer film. Published data for this specific configuration is limited; the actual laminate shifts seal initiation by 3°C to 8°C depending on whether BOPP, PET, or aluminium foil is used as the substrate. Hot tack force measured according to ASTM F1921 is used to qualify vertical form-fill-seal lines; a minimum hot tack of 1.5 N/25 mm at 100 ms cooling time is frequently specified for small-format snack packaging, but the acceptance threshold is set by the machinery manufacturer. Seal strength is tested to ASTM F88/F88M at 300 mm/min on 15 mm wide seal strips. The sealant web is generally 20 µm to 30 µm thick and is coextruded with an outer layer containing 1.0 wt% erucamide masterbatch to prevent blocking. Extrusion lamination with a 90 mm extruder of 30:1 L/D and a Maddock mixing section uses melt temperatures of 235°C to 245°C at the die exit, while adhesive lamination of pre-blown 118LJ film is carried out at lower web temperatures to preserve the surface slip package. Compliance for direct food contact is based on 21 CFR 177.1520 and (EU) No 10/2011, with specific migration limits for additives and monomers determined by the complete laminate. End products include laminated pouches for frozen seafood, snack packaging, and standard barrier stand-up pouches that are not classified as retortable.
| Film property | Test standard | Apparatus / conditions |
|---|---|---|
| Tensile strength and elongation | ISO 527-3 | Type 2 specimen, 500 mm/min, 23°C/50% RH |
| Elmendorf tear resistance MD/TD | ASTM D1922 | Pendulum tear tester, 40 µm film |
| Dart impact F50 | ASTM D1709 Method A | 38 mm dart, 660 mm drop height |
| Haze | ASTM D1003 | Hazemeter, CIE C illuminant |
| Coefficient of friction | ISO 8295 | 200 g sled, 150 mm/min, stainless steel |
| Heat seal strength | ASTM F88/F88M | 15 mm seal strip, 300 mm/min |
During silage clamp covering and greenhouse construction, film extruded from 118LJ is specified in thicknesses from 60 µm to 100 µm, with a blow-up ratio of 2.0:1 to 3.0:1 and a die gap of 1.8 mm to 2.2 mm. The film structure is commonly a three-layer coextrusion in which the core contains the LLDPE and the skins may contain EVA or metallocene LLDPE for greater adhesion during multi-layer winding. UV protection is achieved by dosing hindered amine light stabiliser masterbatch at 3,000 ppm to 5,000 ppm active HALS according to the required 12- to 24-month exposure; carbon black masterbatch is added at 2.0 wt% to 3.0 wt% for silage covers, and the carrier resin must be LLDPE or LDPE rather than EVA to avoid an unintended reduction in Elmendorf tear. Weathering resistance is screened under ISO 4892-2 cycle 1, and retention below 50% of initial tensile elongation after 1,500 h indicates an insufficient stabiliser package. The slit film is often tested to EN 13206 for thickness, tensile impact, and tear resistance; converter laboratories use ISO 527-3 and ASTM D1922 for routine lot release. Silage effluent and condensed ammonia can promote environmental stress cracking; butene LLDPE of this density typically has higher ESCR than LDPE, but published data for 118LJ under silage leachate exposure is limited. End products are silage clamp covers, bale wrap, greenhouse side sheets, and low-tunnel agricultural film.
Heavy-duty sack film produced from 118LJ is typically blown in the 60 µm to 120 µm thickness range on dies from 250 mm to 400 mm, using melt temperatures of 190°C to 220°C and blow-up ratios of 1.8:1 to 2.5:1. The resin is frequently blended with 0 wt% to 20 wt% LDPE to improve bubble stability and raise transverse-direction tear, while addition above 20 wt% reduces dart impact below the threshold required for filled-drop testing. Converters monitor the MD/TD Elmendorf tear ratio according to ASTM D1922; a ratio above 1.5:1 generally indicates excessive machine-direction orientation and is corrected by lowering the frost line or reducing the draw-down ratio. Dart impact is measured according to ASTM D1709 Method A, and free-standing sack filling operations often specify a minimum F50 of 120 g at 80 µm, but published data for this specific configuration is limited and lot-specific certificates should govern. Gusseted tubing is formed in-line and converted by bottom sealing or form-fill-seal equipment for fertilizer, polymer granule, and chemical packaging. Filled sacks are subjected to ASTM D5276 drop tests at 1.2 m or higher, with pass criteria defined by the packer. Surface opening on automatic bagging lines is controlled with silica antiblock at 1,000 ppm to 2,000 ppm, while printed sacks must meet REACH and CONEG heavy-metal limits for inks; the polyethylene substrate itself is covered under FDA 21 CFR 177.1520 for non-food chemical packaging.
Flexible intermediate bulk container liners and box liners made from 118LJ depend on a combination of low surface friction, puncture resistance, and side-gusset weld integrity. The liner film is blown at 60 µm to 100 µm with a 2.0:1 to 2.5:1 blow-up ratio and a die gap of 1.8 mm; melt temperature is held at 195°C to 215°C to avoid excessive orientation that increases machine-direction tear propagation. Surface slip is controlled with 0.5 wt% erucamide/oleamide masterbatch to achieve a coefficient of friction below 0.25 against woven polypropylene fabric under ISO 8295. Slow puncture resistance is measured by ASTM D5748; the FIBC fabricator sets the minimum energy-to-break value for the specific package configuration because no universal acceptance limit exists in the resin specification. Drop testing of the filled liner inside a woven FIBC is carried out according to ISTA 2A or ASTM D5276; failure at the bottom seal or along the side gusset indicates tear propagation linked to excessive machine-direction orientation, and a BUR reduction from 2.5:1 to 2.0:1 is the usual first corrective action. Anti-static liners require an antistatic masterbatch dosed at 3 wt% to 5 wt% to bring surface resistivity below 1011 Ω/square when measured by ASTM D257. For bulk food shipments, the liner is tested under (EU) No 10/2011 overall migration conditions using 3% acetic acid and 10% ethanol as simulants assigned to the commodity; direct dry food contact is covered by 21 CFR 177.1520. End products include FIBC liners, pallet box liners, and container dust covers.
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SABIC® LLDPE 118LJ is a linear low-density polyethylene resin positioned for general-purpose blown-film extrusion. The product designation identifies a narrow-density, medium-viscosity film grade with nominal melt flow rate of 1.0 g/10 min measured at 190 °C under 2.16 kg load according to ISO 1133-1:2022, and nominal density of 0.918 g/cm³ determined according to ISO 1183-1:2019. The base polymer is conventionally classified as a butene-copolymer LLDPE, a structural distinction that influences short-chain branching distribution and therefore controls tear resistance, stiffness, and heat-seal behavior differently from hexene-copolymer or metallocene LLDPE grades. The resin is supplied as natural pellets with a thermal stabilization package; converters requiring surface slip or antiblock performance are generally expected to add a tailored masterbatch or select a related SABIC film grade with the required surface-modifier package. The nominal values shown in Table 1 are controlling only when reproduced on a current SABIC certificate of analysis.
Table 1 lists primary specification points for the grade.
| Specification point | Reference standard | Unit | Nominal value |
|---|---|---|---|
| Melt flow rate | ISO 1133-1:2022 | g/10 min | 1.0 |
| Density | ISO 1183-1:2019 | g/cm³ | 0.918 |
| Base comonomer | Manufacturer grade description | — | Butene |
| Surface modifier package | Manufacturer grade description | — | No migratory slip/antiblock |
| Thermal stabilizer | Manufacturer SDS | — | Phenolic/phosphite antioxidant package |
On production-scale blown-film lines, the processing window is governed by melt temperature, die pressure, and bubble geometry. The 1.0 g/10 min melt flow rate places 118LJ in the medium-viscosity film extrusion class. Extruder torque is typically lower than that of a 0.5 g/10 min high-molecular-weight film resin, but bubble stability at low melt temperatures can become limiting because the melt retains higher extensional viscosity. Single-screw extruders with L/D 30:1 to L/D 36:1 and barrier screws with Maddock mixing sections are commonly used. A typical barrel profile for a 63.5 mm extruder starts with the feed zone at 170 °C, compression zone at 180–190 °C, metering zone at 190–200 °C, and die head at 190–210 °C. These values are not grade-specific guarantees; they reflect conventional industrial practice for 0.918 g/cm³ butene-copolymer LLDPE. Line-specific optimization is required because die geometry, air-ring design, and internal bubble cooling alter heat transfer and bubble strain history.
Die gap selection from 1.0 mm to 1.8 mm is typical for general-purpose film production. Narrower gaps increase shear heating and may induce sharkskin melt fracture if melt temperature is not raised; wider gaps reduce transverse-direction orientation and can lower dart impact values. Blow-up ratios between 2.0:1 and 3.0:1 are commonly used. The upper bound increases transverse-direction tear but can reduce bubble stability on high-stalk lines, particularly at high output rates. Frost line height should be maintained between 3 and 6 die diameters for balanced orientation, but this value depends on ambient air temperature, dew point, air-ring velocity, and film gauge. Melt temperature should not exceed 230 °C for prolonged periods; extended exposure above 240 °C increases oxidative gel formation and reduces film gloss. When transitioning from polar materials such as polyamide or EVOH, a full purge with LLDPE or a dedicated purging compound is required to prevent interfacial gels and die-lip deposits.
Film property data for 118LJ are most reproducibly generated on the target line. The application envelope includes carrier bags, industrial liners, refuse sacks, lamination films, and general-purpose packaging films. Dart impact resistance is determined according to ASTM D1709, Elmendorf tear according to ASTM D1922, haze according to ASTM D1003, and gloss according to ASTM D2457. Published data for this specific configuration is limited; comparative values must be reproduced by the converter because film properties shift with gauge, blow-up ratio, frost line height, and thermal history. The butene comonomer structure generally delivers lower dart impact and tear resistance than a hexene-copolymer LLDPE at equivalent density and melt flow rate, but it provides adequate toughness for cost-sensitive general-purpose films where moderate abuse resistance is acceptable.
Down-gauging behavior is controlled by melt strength and bubble stability. At 25 µm nominal gauge, the resin can usually be processed at moderate stalk height with acceptable bubble control. Reducing gauge to 12 µm requires tighter control of bubble cooling and may expose pinhole formation if air-ring dew point or frost line instability occurs. The absence of migratory slip/antiblock in 118LJ has a direct effect on film blocking and coefficient of friction. Converters targeting coefficient of friction values below 0.3 under ASTM D1894 should add a separate slip masterbatch or select a related surface-modified SABIC grade. Film produced from 118LJ should not be assumed to have stable surface properties after storage, because additive-free polyethylene surfaces can develop blocking or changes in wettability depending on storage temperature and winding tension.
In the SABIC LLDPE portfolio, 118LJ is often compared with other 0.918 g/cm³ density film grades and with hexene-copolymer LLDPE resins. The numerical prefix encodes the density and melt flow class, while the trailing letters denote the additive formulation and, in some cases, the product variant. The distinction is not solely cosmetic. A resin with the same nominal 1.0 g/10 min melt flow rate and 0.918 g/cm³ density but with a migratory slip/antiblock system produces film with lower blocking and lower coefficient of friction. The migratory additives may also raise heat-seal initiation temperature and can affect ink lamination adhesion. 118LJ, supplied without those surface modifiers, is selected when the converter prefers to control additive loading independently or when food-contact documentation requires avoidance of certain migratory substances.
Against a hexene-copolymer LLDPE at equivalent density and melt flow rate, 118LJ as a butene-copolymer grade typically exhibits lower hot-tack strength and lower Elmendorf tear, especially in the transverse direction. The shorter comonomer length produces fewer tie molecules and less effective stress distribution under impact. This is a structural difference, not a batch anomaly. Conversely, the butene-based resin often displays higher stiffness and lower film blocking because the crystallite distribution and surface nucleation behavior differ from those of a hexene copolymer. Selection between butene and hexene grades should therefore be driven by the specific application test, not by density and melt flow rate alone. Blending with LDPE at 10–30 wt% is a common means of improving bubble stability and reducing melt fracture in high-stalk operations; however, the addition of LDPE reduces puncture resistance and must be evaluated by ASTM D5748 or an equivalent puncture test.
When film surface treatment is required, corona discharge is applied inline before winding. The treatment level required for lamination or printing is typically in the range of 38–42 mN/m, measured according to ASTM D2578. Because 118LJ does not contain migratory slip additives, corona-treated surfaces may retain ink adhesion with less interference from additive bloom than surface-modified grades. This behavior is an advantage in printing and adhesive lamination, but it does not eliminate the need for surface energy testing on stored film, because treatment decays over time.
Food-contact suitability for 118LJ is evaluated against FDA 21 CFR 177.1520(c) for olefin polymers and EU Regulation (EU) No 10/2011, Annex I. These references define the polymeric substance and migration limits; they do not by themselves approve the final film. Converters must perform overall migration testing under EU 10/2011 using food simulants appropriate to the intended food type and contact time. For fatty foods, olive oil or 95% ethanol simulant exposure at representative time and temperature conditions may apply. The absence of slip/antiblock additives simplifies the compliance picture but does not remove the obligation to test final articles containing pigments, masterbatches, or recycled material. The resin is not approved for direct food contact in all jurisdictions; documentation from SABIC should be consulted before final application.
REACH Regulation (EC) No 1907/2006 Article 33 requires communication of substance of very high concern content above 0.1 mass% in articles. RoHS Directive 2011/65/EU Annex II restricts lead, mercury, cadmium, hexavalent chromium, and certain organic compounds; unfilled natural LLDPE typically contains no regulated heavy metals above the threshold, but converters must confirm supplier documentation for batch-specific analyses. Table 2 summarizes the compliance matrix for unmodified 118LJ.
| Regulatory reference | Scope | Relevant condition |
|---|---|---|
| FDA 21 CFR 177.1520(c) | Olefin polymers for food contact | Base resin compliance subject to density and extractables limits; final article testing required if modified |
| EU Regulation (EU) No 10/2011 | Food contact plastics | Overall migration limit 10 mg/dm² for general food contact; simulant selection per food type |
| (EC) No 1907/2006 | REACH | Article 33 communication if SVHC > 0.1 mass% |
| Directive 2011/65/EU | RoHS | Annex II restricted substances; natural unfilled LLDPE typically below limits when unmodified |
Ambient storage below 40 °C is recommended. Polyethylene is not hygroscopic, but surface condensation on cold pellets at relative humidity above 60% can produce bubble instability, surface splay, and reduced film transparency. Pellets stored in outdoor silos or exposed to rapid temperature swings should be allowed to equilibrate to processing temperature before feeding. Prolonged storage beyond 12 months or exposure to ultraviolet light can increase gel formation and shift oxidative stability. The thermal stabilizer package in 118LJ is not designed for multi-year outdoor weathering; converters requiring weatherability should select an appropriate UV masterbatch or a dedicated greenhouse film grade.
