| HS Code | 137576 |
| Product | Singapore LLDPE 1002KW |
| Material | Linear Low Density Polyethylene |
| Comonomer | Butene-1 |
| Density | 0.918 g/cm³ |
| Melt Flow Rate | 2.0 g/10 min (190°C, 2.16 kg) |
| Melting Point | 122 °C |
| Vicat Softening Point | 95 °C |
| Tensile Strength At Yield | 12 MPa |
| Elongation At Break | 500 % |
| Flexural Modulus | 340 MPa |
| Shore Hardness | D55 |
| Dart Impact F50 | 110 g |
| Physical Form | Pellets |
As an accredited Singapore LLDPE 1002KW factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaged in 25 kg woven polyethylene bags, palletized and shrink-wrapped, with quantity per shipment clearly labeled. |
| Container Loading (20′ FCL) | 20′ FCL container loaded with Singapore LLDPE 1002KW, securely packed and palletized for safe, efficient transport. |
| Shipping | Singapore LLDPE 1002KW ships as non-hazardous plastic pellets, typically in 25 kg bags or bulk bags, packed in ventilated containers. Export via sea freight from Singapore ports, with standard handling to avoid moisture and contamination. Keep dry and shaded during transit and storage. |
| Storage | Store Singapore LLDPE 1002KW in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and ignition. Keep original sealed bags or containers intact to prevent moisture pickup and contamination. Avoid stacking excessively high. Use clean equipment during handling. No special hazardous storage required, but maintain good housekeeping and protect product integrity. |
| Shelf Life | Shelf life is indefinite if stored in dry, shaded conditions away from heat, UV, and contaminants. |
On chilled-air blown film lines converting frozen food packaging, LLDPE 1002KW is introduced at a melt temperature of 193–210 °C, a die gap of 1.6–2.0 mm, and a blow-up ratio of 2.0:1–2.5:1. The resin’s nominal density of 0.918 g/cm³ and melt index of 2.0 g/10 min (ISO 1133-1:2022, 190 °C/2.16 kg) locate it in the high-toughness film extrusion range, and its short-chain branching distribution reduces spike gels in frost-line-controlled bubbles when the screw L/D is 30:1 or longer with a barrier section. In three-layer frozen food constructions, LLDPE 1002KW is compounded at 70–85 wt% in the core layer and 40–60 wt% in the sealant skin, with the remaining fraction of the sealant skin consisting of a fractional-melt LDPE with a melt index of 0.3–0.8 dg/min to reduce draw resonance at thin gauges. The downstream blown film process uses internal bubble cooling, a frost-line height maintained at 6–10 die diameters, automatic air-ring control, and a collapsing frame loaded at a take-off speed capable of 80–150 m/min for webs between 40 µm and 90 µm. For frozen food contact status, the web is evaluated under FDA 21 CFR 177.1520(c) as an olefin polymer for end-use conditions D through G, and under EU Regulation 10/2011 with an overall migration limit of 10 mg/dm² using EN 1186-1:2002 aqueous and fatty food simulants. Mechanical verification on converted film is carried out by ASTM D882 tensile, ASTM D1709-16a free-falling dart impact, and ASTM D1922-23 Elmendorf tear. Heat-seal initiation is checked under ASTM F2029-16, with the sealant layer expected to initiate below 85 °C at dwell times under 0.5 s. Terminal finished goods include IQF vegetable and seafood pouches, frozen potato liners, ice cream wrap, and frozen meat interleave film, where seal integrity during blast freezing and puncture resistance during sharp-edged frozen product loading are the critical performance boundaries.
In cast pallet stretch film conversion, LLDPE 1002KW is used primarily in the core layer at 70–85 wt% of the total film formulation, while the cling layer carries 3–8 wt% polyisobutylene tackifier and 2–5 wt% of a metallocene plastomer with a density below 0.885 g/cm³ to modify low-temperature unwind performance. The cast film process is run on a slot die with a die gap of 0.5–0.8 mm, melt temperature between 230 °C and 255 °C, an air gap of 150–250 mm, and a chilled roll temperature of 18–24 °C. The primary process conflict is neck-in: when the melt curtain is drawn from the die to the chill roll, edge contraction can produce an unusable edge bead and reduce the usable width by 5–15%, and the resulting edge trim is typically recycled at 10–20% back into the core layer. For that reason, the line is equipped with either an edge-pinning air knife or a vacuum box, and the melt curtain is monitored by a thermal camera to prevent edge weave from exceeding ±2% of nominal web thickness. Quality verification is anchored to ASTM D5458-17 for peel cling, ASTM D5748-14 for probe puncture resistance, ISO 527-3:2018 for machine-direction and transverse-direction tensile, and ASTM D882 for thin-film modulus. Terminal products include machine-grade pallet wrap for power-prestretch units operating at 200–300% prestretch, hand-grade stretch film in 15–25 µm thicknesses, and agricultural bale wrap where oxygen transmission is controlled by the LLDPE crystallite network and the cling layer composition rather than by an EVOH barrier layer. A documented boundary is that rework addition above 20% in the core can increase gel counts and reduce dart impact under ASTM D1709-16a, especially when the edge trim carries oxidised cling-layer tackifier back into the core melt stream.
In a three-layer extrusion lamination for gable-top liquid packaging, LLDPE 1002KW is placed as the sealant web at a coating weight of 15–30 g/m², either as a monolayer sealant layer or as a blend of 60–80 wt% LLDPE 1002KW with 20–40 wt% LDPE to reduce edge wicking during high-speed heat sealing. The downstream process is an extrusion coating/lamination line with a 90–120 mm extruder, L/D ratio of 30:1, melt temperature at the die between 285 °C and 320 °C, and an air gap of 150–250 mm before the pressure roll and 15–20 °C chill roll. The substrate stack may be paperboard/aluminium foil/LDPE/sealant, and the LLDPE layer is oxidised in the air gap with an ozone dose sufficient to raise the surface energy above 40 dyn/cm without causing excessive carbonyl formation that would reduce seal initiation. For compliance, the sealant layer is classified under FDA 21 CFR 177.1520(c) and EU Regulation 10/2011 with an overall migration limit of 10 mg/dm²; the finished laminate is verified under EN 1186-1:2002 for total migration in aqueous and fatty food simulants. Seal strength is evaluated by ASTM F2029-16, and hot-tack performance is measured at seal dwell times below 0.5 s on vertical form-fill-seal lines. Terminal finished products are gable-top juice and dairy cartons, soft-pack liquid detergent pouches, aseptic portion cups, and condiment sachets. The operational boundary is that sustained filling temperatures above 95 °C can depress seal strength due to partial melting of the sealant layer, and the structure is not rated for retort sterilisation above 121 °C.
| Regulatory or test dimension | Designation | Boundary condition |
|---|---|---|
| Olefin polymer food-contact status | FDA 21 CFR 177.1520(c) | Conditions of use D through G |
| EU food-contact migration | EU 10/2011 | Overall migration limit 10 mg/dm² |
| Migration test procedure | EN 1186-1:2002 | Aqueous and fatty food simulants |
| Heat seal verification | ASTM F2029-16 | Dwell time below 0.5 s |
Extruded on high-stalk blown film towers with die diameters up to 400 mm, an 80 wt% LLDPE 1002KW / 20 wt% LDPE blend is drawn through a 2.5:1 blow-up ratio and a stalk height of 5–8 die diameters to produce 120–180 µm heavy-duty sack webs. The high-stalk configuration suppresses orientation in the melt and permits the addition of 15–30 wt% post-industrial recycled LLDPE or internal edge trim without generating gel particles above the 0.6 mm gel count threshold typically monitored by optical scanning on printed sack film. Downstream conversion uses three-layer coextrusion with a die gap of 2.0–2.5 mm, melt temperature of 190–220 °C, internal bubble cooling, and a gusseting and surface-treating station that raises the surface energy to 38–42 dyn/cm before flexographic printing. Industrially, such heavy-duty sack webs are not regulated by a single universal end-product directive: food-contact sacks fall under FDA 21 CFR 177.1520(c) or EU Regulation 10/2011, non-food chemical sacks are evaluated under REACH Annex XVII for restricted substances, and mechanical performance is tested by ASTM D1709-16a dart drop, ASTM D882 tensile modulus, and ASTM D1922-23 tear propagation. Terminal products include valve sacks for polymer resin pellets, fertiliser bags with internal PE liners, mineral powder bags with stitched or heat-sealed closures, and collation-sealed construction material bags. The primary process risk is melt fracture at the outer die lip when shear rate exceeds the resin’s critical shear stress; this is mitigated by keeping the die gap above 2.0 mm and the blow-up ratio below 3.0:1, because the lower melt strength of the butene-based LLDPE can destabilise the bubble under high-stalk conditions.
The durability of a three-season greenhouse cover is controlled less by the base polyethylene than by the distribution of LLDPE 1002KW within the coextruded structure and the additive package. In a three-layer greenhouse film, LLDPE 1002KW is added at 35–50 wt% in the middle or outer layer, with the balance composed of an EVA grade of 14–18% vinyl acetate content and an LDPE carrier. The three-layer blown film process is run with a die gap of 1.8–2.4 mm, melt temperature of 190–215 °C, blow-up ratio of 2.0:1–3.0:1, and internal bubble cooling, with a web thickness of 150–250 µm for multi-season service. The UV stabilisation package is dosed at 3–5 wt% masterbatch and contains hindered amine light stabilisers plus a UV absorber such as a benzotriazole; the LLDPE-rich layer is positioned away from direct pesticide condensation where sulfur-based fungicides can accelerate antioxidant depletion. Compliance is assessed under EN 13206:2017 for agricultural covering films, with retained tensile elongation after accelerated weathering measured by ISO 527-3:2018 and tear resistance by ISO 6383-2:1983. The tear propagation resistance is particularly sensitive to the level and orientation of the LLDPE crystals, and the film is typically tested in both machine and transverse directions because greenhouse films fail first in the transverse direction after cyclic wind loading. Terminal products are multi-season greenhouse covers, low tunnel cloches, and field temporary crop covers. The operational limitation is that LLDPE 1002KW alone does not confer 3-year or longer classification under EN 13206:2017; long-life grades require a coextruded UV barrier layer and a higher additive dosage than the 3–5% used in three-season structures.
In collation shrink film for beverage multipacks, LLDPE 1002KW is introduced at 20–40 wt% into a three-layer blown film blend with fractional-melt LDPE and a medium-density LDPE to increase puncture resistance during side-seal jaw dwell, which is typically below 0.8 s. The shrink film is produced on a blown film line at a die gap of 1.5–2.0 mm, melt temperature of 190–215 °C, blow-up ratio of 2.5:1–3.5:1, and thickness between 45 µm and 70 µm. The critical conversion parameter is the balance between free shrink and seal-jaw tack: the LLDPE addition raises the temperature at which the film can be sealed through contaminated surfaces but lowers the machine-direction free shrink below the level required for rigid can and bottle collations. Free shrink is verified under ASTM D2732-14 at 140 °C and 150 °C, shrink tension under ASTM D2838-18, tensile properties under ISO 527-3:2018, and food-contact status under FDA 21 CFR 177.1520(c). Published data for the precise free-shrink reduction at 40 wt% addition in this specific grade is limited, and converter trials at 25–35 wt% are generally required to maintain machine-direction free shrink above 45% for side-seal packaging of beverage cans. Terminal products are bottle collations for water and carbonated soft drinks, can tray overwrap, and cup multipack shrink film for dairy and convenience foods. The process boundary is that addition above 40 wt% reduces shrink tension sufficiently to cause loose overwraps in shrink tunnels running below 140 °C, while addition below 20 wt% can increase pinhole rates at high-speed jaw closure.
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Singapore LLDPE 1002KW is a linear low-density polyethylene resin associated in commercial trade documentation with ExxonMobil Asia Pacific production in Singapore. The resin is commonly described as a butene-based film extrusion grade supplied in pellet form. Its nominal base-resin density is 0.918 g/cm³ at 23°C when measured under ISO 1183-1 or ASTM D1505. The nominal melt mass-flow rate is 2.0 g/10 min at 190°C with a 2.16 kg load when measured under ISO 1133-1 or ASTM D1238. The alphanumeric code “KW” identifies a specific stabilizer and pellet-consistency package, and it should not be read as a generic LLDPE class. Public datasheets do not always itemize the complete additive composition; for incoming inspection, the supplier certificate of analysis and safety data sheet should govern lot acceptance.
In film conversion, the grade is positioned for monolayer and coextruded blown-film, cast-film, and extrusion-lamination structures where higher melt flow than 1.0 g/10 min C4 LLDPE grades provides lower extruder backpressure and improved drawdown. The product is not intended as an oxygen barrier or as a direct substitute for metallocene-catalysed plastomers in high-clarity, high-abuse packaging. Where tight hot-tack latitude, high puncture resistance, or very low seal initiation below 100°C is required, a separate resin selection or coextrusion layer design is normally necessary.
Two measurements define the primary processing envelope for LL 1002KW. Melt mass-flow rate affects screw torque, die pressure, and the practical minimum gauge in cast and blown film. Density and comonomer type affect crystalline fraction, film stiffness, sealing behaviour, and optical response. The following matrix summarizes the nominal property data and test references that should appear on the supplier certificate of analysis or technical data sheet.
| Property | Nominal value | Test method reference | Technical note |
|---|---|---|---|
| Melt mass-flow rate | 2.0 g/10 min | ISO 1133-1, ASTM D1238 | At 190°C/2.16 kg; certificate-of-analysis value controls |
| Base-resin density | 0.918 g/cm³ | ISO 1183-1, ASTM D1505 | Compression-moulded or extruded specimen preparation must follow the cited method |
| Comonomer type | Butene | Producer trade literature | Confirm by Fourier-transform infrared spectroscopy if substitution risk exists |
| Additive package | Stabilizer and processing package | Safety data sheet and certificate of analysis | Slip and antiblock loadings may vary by lot and end-use region |
Because melt flow ratio and molecular-weight distribution are not always published for this grade, a direct comparison of shear-thinning behaviour against other LLDPE resins cannot be made from nominal melt flow rate alone. Lot-to-lot variation in additive package can shift slip performance, blocking behaviour, and heat-seal response without changing the nominal density or melt flow rate. A film trial remains the only reliable method for line-specific substitution.
In cast extrusion and extrusion lamination, the higher melt flow of LL 1002KW supports thin-gauge chill-roll film and coating structures. Die temperatures in the range 230–260°C are typical for linear low-density polyethylene cast film, although the upper limit should be reduced if die-lip deposit formation appears. Air-gap length, chill-roll temperature, and die-to-roll geometry control neck-in and draw resonance. Edge pinning, a vacuum box, or electrostatic pinning is generally required at line speeds above 150 m/min to maintain web contact. Compared with high-pressure LDPE, LL 1002KW can show greater neck-in and lower drawdown when processed alone; blending with LDPE or metallocene LLDPE is therefore common in extrusion-lamination and coating lines.
In blown film conversion, LL 1002KW behaves as a linear C4 resin with a higher melt flow than 1.0 g/10 min LLDPE grades. On monolayer blown-film towers using grooved-feed extruders in the 50–80 mm diameter range and 24:1–30:1 L/D screws, barrel profiles from 170°C to 220°C are commonly applied. Melt temperature should be held below 240°C to limit oxidative degradation and off-odour development during extended runs. The lower melt strength of this grade compared with high-pressure LDPE requires closer frost-line control. When bubble instability appears as diameter oscillation or web weave, the die gap may be increased from 1.2 mm to 1.8 mm, or the blow-up ratio may be reduced from 3.0:1 toward 2.0:1. For film thicknesses below 20 µm, internal bubble cooling is normally specified; without it, frost-line height and bubble stability, rather than plastication capacity, often become the limiting process variable.
The higher melt flow of LL 1002KW reduces extruder backpressure and can improve output on shallow-screw machines, but this benefit is not unconditional. On a production line with limited die-to-freezing-line distance, reducing melt temperature to improve bubble stability can also increase melt viscosity and raise torque. Operators typically adjust screw speed, die gap, and air-ring geometry together rather than relying on a single setpoint. Batch-to-batch additive variation may appear as film blocking or as a change in coefficient of friction before any melt flow shift is observed; packaging converters should monitor treated-surface dyne level and blocking behaviour during lot changes.
A substitution of high-pressure LDPE with LL 1002KW in a sealant web changes the heat-seal and hot-tack profile because linear low-density polyethylene generally requires a higher seal bar setpoint or longer dwell than LDPE at equivalent melt flow. Seal initiation temperature should be evaluated by hot-tack testing under ASTM F1921 or weld-seal strength testing under ASTM F88. Published data for this specific configuration is limited, so laboratory seal curves on the intended coextruded structure are required before changing formulations. High-speed packaging lines with seal dwell times below 50 ms may show narrower operating latitude unless the outer structural layers compensate for the reduced melt strength of the sealant layer.
Blending LL 1002KW with high-pressure LDPE at addition levels of 10–30 wt% is common in blown film to improve processability and melt strength, but the exact ratio is determined by dart impact, machine-direction tear, and coefficient-of-friction requirements. Film tensile properties should be measured under ASTM D882 or ISO 527-3, dart impact under ASTM D1709, and Elmendorf tear under ASTM D1922. The chosen blend ratio must be revalidated on the actual film line because bubble air flow and screw recovery time affect property retention.
Compared with metallocene-catalysed hexene or octene LLDPE resins, LL 1002KW is positioned as a lower-cost butene-based film grade with corresponding trade-offs in optical clarity, hot-tack breadth, puncture resistance, and abuse tolerance. It should not be expected to match metallocene C6 or C8 resins in low-gauge puncture or dart impact under identical film thickness. Dart impact should be measured under ASTM D1709, puncture toughness under ISO 7765-2 where relevant, and film tensile properties under ASTM D882 or ISO 527-3. In coextruded film structures, the resin is frequently used in core or backing layers rather than as the outermost abuse layer, while the outer layer may use a tougher metallocene polyethylene or a high-pressure LDPE with higher melt strength.
Compared with C4 LLDPE grades at 1.0 g/10 min melt flow, LL 1002KW lowers screw torque and die pressure at equivalent output. It can support thinner gauge on the same die, but may show lower bubble stability in blown film and lower dart impact when drawn below 15 µm. The actual difference depends on screw design, die gap, cooling configuration, and frost-line control. A production trial that records melt pressure, motor load, film gauge profile, and mechanical properties is the only valid method for line-specific substitution. Without such a trial, a nominal melt flow comparison is insufficient to predict gauge stability or seal behaviour.
Because polyolefin pellets are not hygroscopic, drying is not normally required before extrusion. If surface condensation occurs after storage in an unheated warehouse, a pre-conditioning step at 70°C for 2–3 hours may be applied. Storage in original packaging at or below 40°C, away from direct ultraviolet light and moisture, preserves additive dispersion and limits pellet surface oxidation. The base polyolefin is typically covered by standard food-contact statements under FDA 21 CFR 177.1520 and by regional REACH registration, but the finished film must be evaluated for specific additive loadings and migration limits under its intended use conditions. The resin is not designed for medical implant applications, and it is not recommended as a long-term load-bearing structural material without additional stabilizer and UV package verification.
