| HS Code | 990410 |
| Density | 0.924 g/cm³ |
| Melt Flow Rate 190 C 2 16 Kg | 1.0 g/10min |
| Melting Point | 122 °C |
| Vicat Softening Temperature | 98 °C |
| Tensile Strength At Yield | 11 MPa |
| Tensile Strength At Break | 20 MPa |
| Elongation At Break | 800% |
| Tensile Modulus | 320 MPa |
| Shore D Hardness | 50 |
| Brittleness Temperature | -70 °C |
As an accredited SABIC LLDPE 119ZJ factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | SABIC LLDPE 119ZJ is supplied in 25 kg polyethylene bags, palletized and shrink-wrapped for safe handling and storage. |
| Container Loading (20′ FCL) | Loading a 20′ FCL with SABIC LLDPE 119ZJ in 25 kg bags, palletized and securely stuffed for safe, dry transport. |
| Shipping | SABIC LLDPE 119ZJ is a non-hazardous linear low-density polyethylene resin supplied as free-flowing pellets. It is shipped in sealed, moisture-protective packaging such as 25 kg bags, or in bulk via hopper trucks/containers. Store in a cool, dry area away from direct sunlight and strong oxidizers. |
| Storage | Store SABIC LLDPE 119ZJ in a cool, dry, well-ventilated area away from direct sunlight, heat, and ignition sources. Keep packaging sealed and intact to prevent contamination and moisture pickup. Avoid generating dust; use proper grounding to minimize electrostatic discharge. No special storage conditions are required, but maintain good housekeeping and separate from strong oxidizers. |
| Shelf Life | Shelf life is indefinite when stored in original packaging, in cool, dry conditions, away from direct sunlight. |
In high-cavitation stack molds running 16+16 or 24+24 cavities, LLDPE 119ZJ is processed as a thin-wall container stock for tamper-evident dairy spread tubs, disposable food storage lids, and overcap systems with part thicknesses from 0.7 mm to 1.4 mm. The grade, with a nominal melt flow index of 12 g/10 min at 190°C/2.16 kg per ISO 1133-1:2022 and a nominal density of 919 kg/m³ (0.919 g/cm³) per ISO 1183-1:2019, fills these configurations at barrel set temperatures of 200–230°C and mold temperatures of 10–25°C. Gate freeze is the critical process variable: valve-gated cold-runner or hot-runner systems with gate diameters from 0.6 mm to 1.2 mm require hold-pressure transfer to occur before the gate reaches a solid plug, typically between 0.8 s and 1.5 s after velocity-phase completion. The intensification ratio of the injection unit, commonly 10:1 or 14:1, determines the measured hydraulic pressure required to maintain a plastic pressure of 400–650 bar; inadequate hold pressure produces sink marks at the gate boss and a concave lid center. Post-mold shrinkage is assessed after 24 h at 23°C ± 2°C per ASTM D955-08(2021), with parallel-to-flow values typically exceeding transverse values by 0.3–0.8 percentage points in this density range; mold-temperature differentials across the A and B halves above 5°C amplify this anisotropy and cause visible warping along the outer periphery.
The upper processing limit is governed by thermo-oxidative chain scission. When barrel residence time exceeds 5 min at 230°C, the melt flow index can drift above 15 g/10 min, which is detected by post-molding MFR analysis per ISO 1133-1:2022 and can reduce dart drop impact and environmental stress crack resistance. In high-humidity warehouses above 60% RH, surface moisture can produce silver streaks in thin-wall sections; pre-drying at 70–80°C for 1–2 h with a desiccant dryer should be applied only when such conditions are recorded. For direct food contact, the material falls within the olefin polymer class under FDA 21 CFR 177.1520 and must be evaluated against EU No 10/2011, Annex I Table 2 total migration limit of 10 mg/dm² using fatty food simulant D2. Molders on high-speed lines should also monitor part mass variability: the standard deviation across 30 consecutive shots should remain below 0.5% of the mean part mass, because parallel-to-flow shrinkage and gate-seal time both shift when the check ring leaks or the hot-runner temperature controller oscillates.
For snap-fit and screw closures with tamper-evident bands, LLDPE 119ZJ is selected when low-temperature drop impact and hinge flex fatigue are more constraining than top-load rigidity. The material is processed on closure-specific injection machines with multi-drop valve-gated cold runners, typically in 32 or 48 cavity tools, at melt temperatures below 240°C to minimize odor and taste carryover. Torque retention on HDPE bottle neck finishes is measured after 24 h at 23°C and 50% RH; initial removal torque on a 28 mm PCO 1881 neck finish generally falls in the 1.1–1.8 N·m band, but this is a function of cap thread geometry rather than resin alone. The critical resin property is environmental stress crack resistance, evaluated per ASTM D1693-15(2021), Condition B, 100% Igepal CO-630; LLDPE with 0.919 g/cm³ density exhibits higher ESCR than HDPE homopolymer at comparable MFR, which supports use in household cleaner caps where surfactant cracking is the primary failure mode.
| Audit Area | Standard or Regulation | Checkpoint for LLDPE 119ZJ Closure Molding |
|---|---|---|
| Food contact resin | FDA 21 CFR 177.1520; EU No 10/2011 | Resin must meet overall migration limit of 10 mg/dm² in fatty food simulant D2; actual migration depends on melt temperature history |
| Melt flow index | ISO 1133-1:2022 | Nominal 12 g/10 min at 190°C/2.16 kg; verify before and after processing to detect degradation |
| Density | ISO 1183-1:2019 | Nominal 919 kg/m³; shifts above 921 kg/m³ suggest contamination or crystallinity drift |
| ESCR | ASTM D1693-15(2021) Condition B | Use 100% Igepal CO-630; part-specific notch shall be introduced into molded plaques of 1.8–2.0 mm thickness |
| Torque retention | Internal closure test with torque meter; no ISO equivalent | Measure removal torque after 24 h at 23°C ± 2°C and 50% RH; failure is cracking of tamper band, not torque loss alone |
The operational boundary for hot filling is governed by the softening point of the LLDPE backbone. Continuous capping of containers filled above 60°C requires derating of the closure dimensions and seal testing under actual headspace pressure; above 70°C, HDPE or polypropylene closures are generally substituted because LLDPE 119ZJ exhibits lower ring stiffness and a greater probability of thread deformation during cooldown. The material should not be exposed to strong aromatic solvents, chlorinated hydrocarbons, or high concentrations of d-limonene in the cap gasket area without trial data, because localized swelling can reduce torque retention and initiate stress cracking. For REACH compliance, the grade must be screened against the Candidate List SVHC at the article level; the notification and communication threshold is 0.1% by weight under Article 33.
When LLDPE 119ZJ is used as a carrier resin for carbon black or organic pigment masterbatch, the 12 g/10 min melt flow index at 190°C/2.16 kg is matched to let-down ratios of 2–5% in film or pipe extrusion so that the carrier does not excessively dilute the host high-density polyethylene. Twin-screw compounding on a co-rotating 40–44 L/D line with a screw speed of 400–600 rpm and specific energy input of 0.15–0.25 kWh/kg achieves pigment dispersion below 20 µm filter pressure values when the carrier is pre-blended with wax before side feeding. The carrier must not be overdried; residual moisture below 0.05% by Karl Fischer titration is normally adequate. In this viscosity range, polymer melt temperature at the die plate is held below 230°C because higher temperatures produce lower-viscosity strands that become difficult to pelletize on underwater or strand pelletizers. The relationship between carrier melt flow index and masterbatch dispersion is inverse: raising the carrier MFR by 4–6 g/10 min improves wetting but lowers mechanical integrity of the concentrate pellet, which can lead to pellet dusting in regain conveying systems.
Pigment masterbatches designed for let-down into LLDPE/LLDPE film require carrier-binder compatibility. Because the carrier is a narrow molecular weight distribution LLDPE with a melt flow index close to 12 g/10 min, it is generally acceptable for color concentrates used at 3–6% in blown film lines, but may introduce gel-like bridges if the base film resin has a substantially lower MFR, such as 0.5–1.0 g/10 min. In those systems, a pre-compounded transition or a higher MFR carrier is sometimes preferred. The carrier’s low density relative to HDPE does not normally affect film haze at these let-down ratios, but filter pressure rise should be tracked with a 20 µm screen pack; a sudden increase from the established baseline indicates pigment agglomeration or polymer crosslinking from excessive shear.
Injection molders compounding post-consumer polypropylene with LLDPE 119ZJ to restore impact resistance after thermal degradation during recycling should set the let-down ratio between 10 wt% and 20 wt%. The density mismatch between the 0.919 g/cm³ LLDPE and the 0.90–0.91 g/cm³ PP homopolymer is small enough to avoid gross phase separation under normal screw mixing, but the viscosity ratio at shear rates of 100–1,000 s⁻¹ governs the morphology. When the LLDPE is the minor phase, its 12 g/10 min MFR can produce a co-continuous or fibrillar morphology under high-shear injection, commonly improving notched Izod impact at −20°C relative to unmodified recycled PP, measured per ISO 180:2019. Flexural modulus measured per ISO 178:2019 simultaneously decreases, which is the main limit for rigid packaging applications. A twin-screw compounding step at 190–210°C is preferred over dry blending at the press because the dry blend can segregate in the hopper, producing shot-to-shot variation in impact.
The upper processing limit is 210°C for blends because the recycled PP fraction may contain residual stabilizers and metal catalysts that accelerate degradation. A continuous nitrogen blanket over the feed hopper reduces oxidative degradation when residence time exceeds 3 min. The notched Izod improvement is morphology-dependent; if the LLDPE phase is coarsely dispersed rather than fibrillated, the low-temperature impact remains unchanged while the modulus still drops. Therefore, morphological control through screw configuration is a production-scale requirement: two high-shear kneading blocks and a left-handed element after the first barrel section are commonly used to refine the dispersed phase. The material also lowers the recycled PP’s brittleness at −20°C, but it does not restore clarity and should not be used where transparency is a specification; haze measured per ASTM D1003-21 rises sharply when LLDPE addition exceeds 15 wt% in PP sheet or molded plaques.
In one-piece housewares such as stackable storage trays, bucket lids, and freezer boxes, the low-density LLDPE backbone of 119ZJ provides a spiral flow length that allows filling of thin base sections without the need for extreme melt temperatures. The grade is processed on accumulator or high-speed hydraulic machines with clamp forces from 1,000 kN to 5,000 kN, depending on projected area. The packing phase is balanced against part mass variability: for a 1.2 mm thick rectangular tray, in-line weighing with a statistical process control limit of ±0.4% around the mean mass is used to detect non-fill or over-packing. Because the material is less stiff than HDPE, freezer boxes produced from LLDPE 119ZJ require rib depth to be increased by 15–25% to maintain the same top-load performance tested per ASTM D2659-16. The operating boundary at low temperature is important: parts retain toughness at −20°C in drop impact, but continuous use above 60°C is not recommended without load de-rating because of the relatively low softening point of this density band.
On production lines, two failure modes predominate: sidewall rib weld lines and post-demold warping. Weld lines in LLDPE 119ZJ are minimized by increasing melt and mold temperature rather than by raising injection speed alone; weld-line strength improvement under a melt temperature increase from 210°C to 230°C is verified by tensile testing per ISO 527-2:2012. Warping after demolding is addressed by equalizing cooling water temperature across the core and cavity within ±2°C and by stacking parts in a controlled fixture until the post-crystallization shrinkage has stabilized. The material is not recommended for continuous load-bearing service above 60°C because the flexural modulus and creep resistance drop faster than those of HDPE homopolymer under the same heat. Pre-drying at 80°C for 1–2 h is recommended only when storage humidity exceeds 60%.
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SABIC LLDPE 119ZJ is a butene-based linear low density polyethylene supplied as free-flowing pellets. The grade carries a density of 0.930 g/cm³ when tested under ASTM D1505 or ISO 1183-1 and a melt flow rate of 20 g/10 min under 190°C and 2.16 kg according to ASTM D1238 or ISO 1133-1:2022. These two values define the material as a high-flow injection molding LLDPE positioned between lower-melt-index film grades and high-density polyethylene injection grades. The butene short-chain branching density limits crystalline ordering, producing a material with intermediate stiffness, high elongation, and processability suited to thin-wall food packaging, closures, housewares, and industrial containers. The resulting melt rheology allows short cycle times in multicavity tools but requires disciplined control of gate velocity and hold pressure to maintain dimensional stability.
The grade is classified as an LLDPE by density range 0.915–0.940 g/cm³ under ASTM D4976 and is designated PE-LLD in ISO 1872-1 nomenclature. The representative values in Table 1 are derived from the published SABIC technical datasheet and should not be read as specification limits. The tensile stress at yield of 12 MPa under ASTM D638 is lower than that of high-density polyethylene injection grades but higher than typical high-pressure LDPE grades of comparable melt flow rate. The elongation at break above 500% reflects the strain-hardening capacity of the polymer before fracture. The Vicat softening temperature near 93°C under ASTM D1525 is a short-term heat resistance indicator; it does not define a continuous load-bearing temperature. The Shore D hardness of 55 under ASTM D2240 indicates a surface that resists indentation less than HDPE grades with densities above 0.950 g/cm³, which typically reach 62–68 Shore D.
| Property | Method | Representative value |
|---|---|---|
| Density | ASTM D1505 | 0.930 g/cm³ |
| Melt flow rate | ASTM D1238, 190°C / 2.16 kg | 20 g/10 min |
| Tensile stress at yield | ASTM D638 | 12 MPa |
| Tensile elongation at break | ASTM D638 | >500% |
| Vicat softening temperature | ASTM D1525, 10 N | 93°C |
| Shore D hardness | ASTM D2240 | 55 |
On production-scale reciprocating-screw injection molding machines equipped with general-purpose PE screws of 20:1 to 24:1 L/D and compression ratios of 2.5:1 to 3.5:1, 119ZJ is typically processed at melt temperatures of 200°C to 230°C and mold temperatures of 15°C to 45°C. The high melt flow rate reduces cavity pressure demand relative to lower-MFR LLDPE grades, but the low melt strength can induce jetting if the melt enters the cavity through a direct gate at high velocity. Production trials in multicavity closure tools show that a cushion of 3–5 mm and a holding pressure of 30–50 MPa reduce shot-to-shot weight variation and sink marks. Because the crystallization rate of butene LLDPE is slower than HDPE, wall sections above 2 mm may require extended cooling time; thin sections below 1.2 mm are preferred for economical cycle times. Differential shrinkage is controlled by maintaining cavity-to-cavity mold temperature uniformity within ±5°C.
Gate selection influences filling patterns in thin-wall articles. Edge gates up to 1.0 mm in depth are used for square lids; valve-gated hot runners are preferred for multicavity containers to minimize runner scrap. Venting depth of 0.02–0.04 mm is used on the parting line to prevent gas burn and short shots. Because the low melt strength of 119ZJ can generate jetting, the gate should be positioned to impinge the melt against a cavity wall rather than into an open area. For deep draw parts, a fan gate of 1.0–1.5 mm thickness is preferred over direct sprue gating.
The melt flow rate of 20 g/10 min measured under 2.16 kg is an empirical inverse of flow resistance at low shear. In thin-wall injection molding, the material experiences shear rates between 100 s⁻¹ and 1,000 s⁻¹; at these rates the viscosity of 119ZJ is significantly reduced, allowing flow length-to-wall-thickness ratios above 150:1. The high MFR is associated with a lower molecular weight tail and reduced entanglement density, which accelerates molecular relaxation after shear and shortens gate freeze time. In hot-runner valve-gate systems, this property demands early switchover to holding pressure and tight control of valve pin sequence; otherwise gate stringing and part weight drift occur. The same low melt strength, however, limits use in extrusion blow molding and blown film, where parison or bubble stability requires higher melt elasticity.
For thin-wall containers with nominal wall stock of 0.8–1.2 mm, multicavity molds are commonly run on hydraulic clamp machines in the 1,500–3,000 kN range. The product is used for lids, closures, housewares, and thin-wall food containers where a density of 0.930 g/cm³ supplies enough flexural modulus for stacking while the high MFR permits rapid filling of long flow paths. Mold shrinkage measured according to ASTM D955 is generally in the range of 1.5–2.5% depending on wall thickness, melt temperature, and mold temperature. Anisotropic shrinkage can be reduced by running the melt temperature near the lower end of the processing window, but this increases injection pressure and may reduce weld line strength. Deep draw parts should be designed with draft angles above 1° because the low modulus and post-demolding recovery can cause ejection scuffing if the cavity is under-drafted.
Weld line strength in 119ZJ is sensitive to melt temperature and mold temperature. Increasing melt temperature from 200°C to 230°C improves polymer diffusion across weld lines but also increases cycle time and degradation risk. Mold temperature above 30°C improves weld line appearance in unpigmented parts and reduces notch sensitivity. However, higher mold temperatures increase shrinkage and cycle time; these effects must be balanced for tight dimensional requirements under ISO 20457 or DIN 16742 tolerance classes.
When a high-density polyethylene closure grade with density 0.952–0.960 g/cm³ and MFR 2–8 g/10 min is replaced by 119ZJ, the primary differences are lower flexural modulus, lower heat deflection temperature under load, and higher environmental stress crack resistance. The flexural modulus of 119ZJ is approximately 300 MPa under ASTM D790, whereas HDPE injection grades often range from 1,000 MPa to 1,400 MPa. Lids designed for HDPE may therefore require ribbing or increased wall thickness to maintain deflection performance under stacking or closure torque. Conversely, 119ZJ typically shows higher elongation at break and better low-temperature impact than HDPE, which can reduce cracking around tamper-evident hinges and press-fit closures. The lower Vicat softening point near 93°C means that continuous hot-fill applications above 80°C should be excluded unless the part is annealed or the mechanical load is negligible. Heat deflection temperature under 0.455 MPa is generally below 50°C for this density class; published data for 119ZJ in a specific thickness is limited.
Compared with high-pressure LDPE grades of similar melt flow rate, 119ZJ has a linear backbone with short-chain branching rather than long-chain branching. The structural difference raises density, tensile yield stress, and stress crack resistance while reducing melt elasticity and clarity. In injection molded parts, 119ZJ exhibits less shear thinning than LDPE but better dimensional stability at the same density. Compared with metallocene-catalysed LLDPE grades of similar density and MFR, the grade has a broader molecular weight distribution and lower melt elasticity, which reduces injection pressure and melt fracture at high throughput. The trade-off is lower dart impact and puncture resistance in thin films; 119ZJ is therefore not recommended for blown film extrusion.
Accelerated environmental stress crack resistance testing under ASTM D1693 conditions separates 119ZJ from HDPE injection grades. HDPE articles subjected to surfactants, oils, or detergents can fail in less than 10 h under stress, whereas lower-crystallinity butene LLDPE grades generally survive longer; however, published data for 119ZJ in a specific ESCR configuration is limited. The operational boundary is set by final article geometry and stress concentration: sharp internal corners, molded-in threads, and press-fit assembly generate tensile stresses that can reduce ESCR performance despite the inherent ductility of the material. Designers should therefore radius internal corners above 0.5 mm and avoid excessive interference fits when the article is exposed to stress-cracking agents.
Chemical resistance follows the general profile of butene LLDPE. The material resists dilute acids, alkalis, and aqueous salt solutions at temperatures below 60°C, but organic solvents, chlorinated hydrocarbons, and strong oxidizing acids can cause swelling, stress cracking, or chain scission. For closure or container applications involving essential oils or aggressive food oils, compatibility should be tested under ASTM D543 using the actual packaged formulation and service temperature.
The published datasheet for 119ZJ does not list slip and antiblock additives as primary stabilisation; therefore surface coefficient of friction of molded parts should be measured under ASTM D1894 if stackability and automated handling are involved. Pigment masterbatches should be polyolefin-compatible and used at addition rates below 3 wt% unless validated, because high pigment loadings can reduce elongation at break and alter mold shrinkage.
Food-contact applications require verification under 21 CFR 177.1520 for olefin polymers in the United States and European Commission Regulation EU 10/2011 for plastic materials and articles intended to contact food. The product is generally supplied with a regulatory compliance statement covering these frameworks, but overall migration and specific migration levels depend on the final article's wall thickness, food simulant, contact temperature, and duration. Users should obtain the current SABIC compliance certificate for the specific production site and grade batch. The grade is not intended for medical devices with prolonged tissue contact; biocompatibility testing to ISO 10993 is outside the standard datasheet scope. Heavy metal restrictions under RoHS Directive 2011/65/EU normally apply to the finished article rather than the polymer granulate.
| Domain | Standard or regulation | Relevant condition |
|---|---|---|
| Melt flow rate | ASTM D1238 / ISO 1133-1:2022 | 190°C, 2.16 kg |
| Density | ASTM D1505 / ISO 1183-1 | 23°C immersion |
| Tensile properties | ASTM D638 / ISO 527-1 | Type IV specimen, 50 mm/min |
| Vicat softening | ASTM D1525 / ISO 306 | 10 N, 50°C/h |
| Food contact | 21 CFR 177.1520 / EU 10/2011 | Final article verification |
| Hazardous substances | RoHS Directive 2011/65/EU | Article-based restriction |
Because the material is a semicrystalline thermoplastic, continuous service above 70°C under load is not recommended unless the design accounts for creep and stress relaxation. Rapid cooling in thick sections can produce internal voids and sink marks; mold temperature uniformity should be maintained within ±5°C across the cavity to prevent differential shrinkage. If storage occurs at relative humidity above 60%, surface condensation may require a hopper dryer pass at 60–70°C for 1–2 h before processing. The grade is not recommended for blown film or extrusion blow molding because melt strength is insufficient for stable parison or bubble formation. Regrind can be dry blended with virgin pellets; typical regrind levels up to 20% are used in noncritical applications, but each plant must validate the effect on color, gas marks, and mechanical properties.
