| HS Code | 877824 |
| Product | DOWLEX LLDPE 2047G |
| Resin Type | Linear Low Density Polyethylene (LLDPE) |
| Density | 0.917 g/cm³ |
| Melt Flow Index | 2.3 g/10 min (190°C / 2.16 kg) |
| Tensile Strength At Yield | 11 MPa |
| Tensile Strength At Break | 21 MPa |
| Elongation At Break | 800% |
| Flexural Modulus | 290 MPa |
| Vicat Softening Temperature | 95 °C |
| Melting Point | 122 °C |
| Brittleness Temperature | -75 °C |
| Shore Hardness | D 45 |
As an accredited Dow DOWLEX LLDPE 2047G factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | DOWLEX LLDPE 2047G pellets supplied in 25 kg bags, with 1,000 kg octabins available for bulk handling. |
| Container Loading (20′ FCL) | 20′ FCL: palletized 25 kg bags of DOWLEX LLDPE 2047G pellets, shrink-wrapped and containerized for dry, safe, efficient transport. |
| Shipping | DOWLEX LLDPE 2047G is a non-hazardous polyethylene resin shipped in sealed bags, octabins, or bulk hopper trucks. Protect from moisture, direct sunlight, and contamination. Store dry and handle with standard material-handling equipment. Ensure containers are intact to maintain product purity and flow during transport. |
| Storage | Store DOWLEX LLDPE 2047G in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and strong oxidizers. Keep containers tightly sealed to prevent moisture or dust contamination. Avoid prolonged outdoor exposure; maintain moderate temperatures to preserve pellet flow and properties. No special hazardous storage required, but follow standard industrial hygiene practices. |
| Shelf Life | Shelf life is typically one year from delivery if stored dry, cool, in original sealed packaging, and protected from sunlight. |
Cast pre-stretch pallet wrapping lines operating with DOWLEX 2047G at 100 wt% in the core layer encounter a measurable edge-bead rise above 45 µm when draw ratio exceeds 40:1, which follows from the resin’s 2.3 g/10 min melt flow rate per ASTM D1238-20 at 190°C/2.16 kg and 0.917 g/cm³ density per ASTM D792-20. The cast line architecture for a 23 µm A/B/C machine wrap uses a 120 mm main extruder at L/D 30:1 with barrel zones set at 220–260°C, feed throat 35–45°C, flat die 260–280°C, and a 2.4 m die width. Chill roll temperature is held at 18–22°C, and the air gap is limited to 120–180 mm to suppress neck-in below 60 mm per side at 450 m/min. Formulation for the cling layer comprises 0.5–1.5 wt% polyisobutylene tackifier with number-average molecular weight 1,000–2,000 g/mol, plus 500–1,000 ppm phosphite processing stabilizer to reduce gel formation after 24 h residence at 260°C. Compliance for non-food industrial pallet wrap rests on REACH Regulation (EC) No 1907/2006 and Directive 94/62/EC packaging-waste concentration limits; mechanical acceptance is tested per ASTM D5748-19 puncture resistance, ASTM D5458-95(2020) cling force, ASTM D882-18 tensile properties, and ISO 527-3:2018 for film modulus. Terminal goods are 300 mm hand rolls, 500 mm machine rolls, and 1.5:1 to 2.0:1 pre-stretched rolls.
At line speeds above 550 m/min, gauge variance widens to ±4 µm and ASTM D882-18 elongation at break falls by more than 12%; operators reduce die lip gap to 1.8–2.2 mm and increase air-knife pressure to 15–20 kPa to restabilize the web. Resin stored in unsealed hoppers beyond 8 h at 60% RH develops surface moisture, appearing as 0.2–0.5 mm microvoids on the chill-roll contact side; pre-drying is therefore specified at 70°C for 4 h only when silo or hopper humidity exceeds that threshold. The core layer can accept up to 20 wt% recycled edge trim, but gel count then rises from <5 per m² to 25–40 per m², requiring a 200 mesh screen pack change every 8 h.
High-UV round bale silage wrap formulated with DOWLEX 2047G at 70–85 wt% in the core layer and 10–20 wt% EVA with 18% vinyl acetate in the cling layer shows a cling-force drift from 160–190 g/cm to 40–60 g/cm after 12 months weathering if no stabilizer package is present; with 0.3–0.7 wt% HALS and 5–8 wt% carbon black masterbatch at 50% carbon black in LLDPE carrier, the retained cling after ISO 4892-2:2013 cycle 1A exposure at 0.35 W/m² at 340 nm remains above 55% of initial. Bale-wrap mechanical testing is performed to EN 14932:2018, ISO 527-3:2018, and ASTM D5748-19; regulatory coverage is REACH Regulation (EC) No 1907/2006. Production on a three-layer cast line uses a 120 mm 30:1 L/D main extruder, 75 mm satellite extruders, 2.8 m die width, melt pump pressure 180–220 bar, and a 400 mm diameter matte-finish chill roll at 20°C. Output rolls are 750 mm × 25 µm × 1,500 m for round bales and 750 mm × 20 µm for square bales up to 1.2 m diagonal.
Melt fracture occurs on these lines when melt temperature falls below 245°C, because the 2.3 g/10 min DOWLEX 2047G does not develop sufficient shear thinning at lower throughput; die pressure fluctuations above 5 bar correspond to uneven carbon black dispersion with agglomerate area above 0.03% under transmitted light. Screen packs at 60/100/60 mesh are used to capture gels larger than 150 µm, and carbon black masterbatch is pre-dried at 70°C for 4 h when storage relative humidity exceeds 60%. Adding HALS above 0.7 wt% migrates to the cling surface and raises unwinding force by 20–30% at 35°C, so the formulation boundary is treated as a production control rather than a loading opportunity.
For 12–25 µm direct food-contact overwrap, DOWLEX 2047G is blended at 85–95 wt% with 5–15 wt% high-pressure LDPE on a single-layer cast line with melt temperature 240–275°C, die width 2.0–2.6 m, and chill roll temperature 18–24°C to maintain haze below 6% at 25 µm per ASTM D1003-13 and gloss above 70 GU at 60° geometry per ASTM D2457-13. Food-contact compliance is anchored to European Commission Regulation (EU) No 10/2011 Annex I overall migration limit of 10 mg/dm² and specific migration testing in 3 wt% acetic acid and 10% ethanol simulants, plus FDA 21 CFR 177.1520 for olefin polymers. The slip/antiblock package contains 300–800 ppm erucamide and 800–1,500 ppm synthetic silica; above 2,000 ppm silica, elongation at break falls below 300% per ISO 527-3:2018, so the addition ratio is capped within that band. Downstream terminal products include 12–18 µm produce pillow bags, 25 µm bakery flat wrap, and 35 µm frozen vegetable pouches requiring minimum dart drop of 80 g per ASTM D1709-16A.
Corona treatment after casting is set at 38–42 mN/m for water-based flexo printing and 42–46 mN/m for solventless lamination; the treated surface decays by 2–4 mN/m within 72 h at 23°C and 50% RH, so slitting and print scheduling are confined to a 48 h window. A 90 mm extruder with 30:1 L/D barrier screw and mixing pins, vacuum venting at -0.08 MPa, and die bolt spacing of 25 mm maintain thickness variation below ±2%. When recycled edge trim exceeds 20 wt%, gel counts increase from <5 per m² to 25–40 per m², requiring a 200 mesh screen-pack replacement every 8 h; this limits post-industrial scrap reincorporation in thin food-contact layers.
Low-density ethylene-octene DOWLEX 2047G is used as the backing layer in coextruded surface protection masking film at 80–90 wt% with 10–20 wt% high-pressure LDPE, while the adhesive layer is a separate POE or EVA compound applied at 10–20% of total web thickness; peel force on polished stainless steel is specified between 0.5 N/25 mm and 1.5 N/25 mm per ASTM D3330-04(2018) Method A with 180° peel angle after 24 h dwell at 20°C. The coextrusion line uses a 2.2 m flat die, 90 mm and 60 mm extruders at L/D 30:1, melt temperature 220–250°C, and a mirror-polished chill roll at 18°C; corona treatment at 40–42 mN/m anchors the adhesive layer. Compliance for industrial masking films covers REACH Regulation (EC) No 1907/2006; mechanical acceptance includes ISO 527-3:2018, ASTM D882-18, and ASTM D1922-23 Elmendorf tear. Terminal products are 40–90 µm protective masking for steel coil, glass sheet, and painted or anodized panels.
Die build-up is observed as a 1–3 mm ridge of oxidized POE adhesive at the die lip after 6–8 h continuous operation; it initiates 0.1–0.3 mm edge die lines and increases peeling force variability by ±20%. To control this, die lip coating with a fluoropolymer sleeve and air-jet edge cooling are applied, and the adhesive layer extrusion temperature is capped at 240°C to limit POE degradation. When the core layer content falls below 80 wt%, tensile elongation at break drops below 500% per ISO 527-3:2018, which correlates with splitting during 180° peel removal from textured galvanized steel.
When a 120–180 µm cast stretch hood is chosen instead of blown tubular construction for pallet unitization, DOWLEX 2047G is blended at 70–85 wt% with 15–30 wt% EVA or POE to raise machine-direction elongation to 450–600% per ISO 527-3:2018 while retaining a density-driven modulus suitable for three-sided hood application. The cast process runs a 2.5 m die with 150 mm main extruder at L/D 30:1, melt temperature 225–250°C, die gap 2.0–2.8 mm, and line speed 200–350 m/min; edge-bead gauge is controlled to ±3% by automated die bolts at 25 mm spacing. Mechanical acceptance testing includes ASTM D882-18, ISO 527-3:2018, ASTM D1922-23, and ASTM D5748-19; regulatory coverage is REACH Regulation (EC) No 1907/2006 and Directive 94/62/EC for industrial packaging. Terminal products are 80–180 µm stretch hoods for brick, roofing tile, chemical bag stacks, and white goods, supplied in 1.0–1.5 m lay-flat widths.
A void-free stretch hood at 180 µm requires that the melt pump discharge pressure stay within 180–240 bar; excursions beyond 240 bar produce shear bands that appear as gauge bands every 30–50 cm and reduce puncture energy by 15–20% per ASTM D5748-19. Chill roll temperature is held at 18–20°C to limit surface gloss loss, while secondary cooling rollers at 30°C reduce curl caused by differential layer shrinkage. The replacement of blown tubing with cast film is limited by the lack of biaxial orientation: the cast hood exhibits lower transverse-direction tear resistance than a blown counterpart, so edge reinforcement strips or thicker edge beads of 10–20 µm are incorporated during die lip profiling.
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Dow DOWLEX 2047G is an ethylene-1-octene linear low-density polyethylene produced by continuous solution polymerization. The resin is supplied in pellet form with a density of 0.917 g/cm³ measured under ASTM D792 and a melt mass-flow rate of 2.3 g/10 min measured under ASTM D1238 at 190 °C/2.16 kg. The octene comonomer introduces short-chain branches that disrupt crystallinity differently than butene branches in conventional gas-phase LLDPE grades. That structural difference influences solid-state tear propagation, impact strength, and heat-seal initiation temperature. The grade is used in high-speed cast film, monolayer blown film, stretch film, and form-fill-seal packaging where processability is defined by chill roll release, die lip deposit behavior, and gauge uniformity.
Because the melt index is 2.3 g/10 min, 2047G produces lower extruder head pressure than blown film grades such as DOWLEX 2045G, which is specified at 0.920 g/cm³ and 1.0 g/10 min. The higher flow path of 2047G permits downgauged film on high-speed cast lines but requires tighter control of air gap and melt temperature. At melt temperatures above 260 °C, oxidation gel formation increases; below 220 °C, optical clarity can decline due to incomplete melting of high-molecular-weight fractions. Published data for thin-gauge film below 15 µm is limited, and processor-scale trials are required to establish tear, seal, and blocking values under specific line conditions.
At the same nominal density, octene-based 2047G exhibits a higher probability of tie-chain formation because six-carbon side branches are more effective at inter-lamellar coupling than four-carbon butene branches. This manifests as greater dart drop resistance and higher Elmendorf tear in both directions. On a 25 µm blown film produced with a 2.5:1 blow-up ratio and 1.0 mm die gap, 2047G typically yields a dart impact of 140 g under ASTM D1709A. A butene LLDPE of 0.918 g/cm³ density and 2.0 g/10 min melt index typically produces 95–110 g under the same test. Machine-direction Elmendorf tear values under ASTM D1922 are commonly 300–350 g for 2047G and 180–220 g for the butene grade; transverse-direction tear differences are similar but less pronounced. Haze measured by ASTM D1003 is typically 8% for 2047G at 25 µm, whereas a conventional butene grade may range from 10–14%. Gloss at 45° under ASTM D2457 is commonly 75 for 2047G and 60–65 for the butene comparator. These distinctions allow downgauging of industrial liners and carrier films when seal strength and tear resistance are limiting factors.
| Property | Test method | Typical value |
|---|---|---|
| Density | ASTM D792 | 0.917 g/cm³ |
| Melt mass-flow rate | ASTM D1238 (190 °C, 2.16 kg) | 2.3 g/10 min |
| Melting temperature | ASTM D3418 | 122 °C |
| Vicat softening point | ASTM D1525 | 102 °C |
| Dart impact, 25 µm film | ASTM D1709A | 140 g |
| Elmendorf tear, machine direction | ASTM D1922 | 300–350 g |
| Elmendorf tear, transverse direction | ASTM D1922 | 400–450 g |
| Haze, 25 µm film | ASTM D1003 | 8% |
| Gloss, 45° | ASTM D2457 | 75 |
On a cast film extruder with single-screw diameter between 65 mm and 90 mm and L/D 30:1, 2047G is processed with a feed zone at 40–60 °C, a compression zone at 190–220 °C, and a metering zone at 220–240 °C. The adapter and die are held between 240 °C and 250 °C. At line speeds above 150 m/min, melt pressure at the screen changer becomes a stability boundary. Pressure variation greater than ±2% at a 1,200 mm slot die produces measurable gauge bands at intervals less than 20 s. This instability is attributed to inconsistent melt pumping and is resolved by a staged screen pack of 60/100/100 mesh or by a static mixer downstream of the screen changer. The 2.3 g/10 min melt index reduces motor amperage compared with 1.0 g/10 min blown film resin but also lowers melt elasticity. Bubble stability on blown film lines is therefore more sensitive at equivalent output unless the air ring and internal bubble cooling are adjusted to compensate.
Chill roll surface temperature is held between 20 °C and 30 °C for 2047G cast film. A temperature variation greater than ±3 °C across the roll width creates transverse gauge variation and increases blocking tendency. Lower temperatures within the range increase quench rate and reduce crystallinity, while temperatures above 35 °C delay solidification and can produce optical defects when the melt curtain contacts the roll. On ethylene-octene grades, the thermal quench window is narrower than on high-density polyethylene because crystallization occurs at lower temperatures and the coefficient of friction remains sensitive to surface morphology.
Although LLDPE is not hygroscopic, condensation on cold pellets entering the feed throat can introduce surface water. At relative humidity above 60%, drying at 70–80 °C for 2 h in a desiccant dryer is applied to avoid splay. Storage is maintained at 20–30 °C and 50–60% relative humidity, away from direct UV exposure. Prolonged storage above 40 °C may accelerate additive migration and alter coefficient-of-friction development after film conversion.
2047G is compounded with antioxidant and acid scavenger systems at pelletization. Downstream converters add slip and antiblock masterbatches on-line. Erucamide slip at 500–1,000 ppm is typical for film where coefficient of friction must drop below 0.30; the coefficient under ASTM D1894 requires 24–48 h post-extrusion conditioning because additive migration to the film surface is controlled by paracrystalline fraction and storage temperature. Antiblock additives based on synthetic silica at 1,000–2,000 ppm reduce blocking at roll temperatures above 30 °C. Slip levels above 1,200 ppm may depress seal strength and are not recommended for food-contact films requiring hermetic closures. Die lip deposit increases when low-molecular-weight slip or antistatic masterbatch is overdosed. At die temperatures above 250 °C, partial degradation of erucamide forms varnish-like deposits; the die gap should be inspected after 24 h of continuous running.
For food-contact applications, the olefin polymer is designated under 21 CFR 177.1520 for polyolefin resins. Compliance is limited to use conditions that do not exceed the temperature and food-type limitations of that section. Final packaging articles must be manufactured in accordance with 21 CFR 174.5 good manufacturing practice regulations. No statement is made regarding EU Regulation (EC) No 10/2011 unless the full additive composition from the converter is assessed. The grade is not classified as hazardous under REACH; registration obligations apply to the substance in its supplied form.
| Parameter | DOWLEX 2045G | DOWLEX 2047G |
|---|---|---|
| Density, ASTM D792 | 0.920 g/cm³ | 0.917 g/cm³ |
| Melt index, ASTM D1238 | 1.0 g/10 min | 2.3 g/10 min |
| Primary processing window | Blown film, higher melt strength | Cast film, higher drawdown |
| Extruder head pressure at equivalent output | Higher | Lower |
| Downgauging capability at high line speed | Limited by melt pressure | Improved at equivalent drive load |
DOWLEX 2045G is a blown film resin with density 0.920 g/cm³ and melt index 1.0 g/10 min. Its higher density raises Vicat softening point and stiffness, while its lower melt index increases melt strength for bubble stability. 2047G differs primarily in melt flow and density; the 2.3 g/10 min melt index allows higher screw throughput per unit head pressure and is preferred for cast film where draw resonance must be suppressed by higher shear thinning. However, 2047G has lower melt strength than 2045G, so blown film operations running 2047G at blow-up ratios above 2.8:1 may observe bubble sag unless internal bubble cooling is used. The density difference of 0.003 g/cm³ generally lowers secant modulus and improves seal behavior at equivalent seal bar temperature, but reduces tensile stiffness.
The resin plastication behavior favors barrier screws with a compression ratio of 2.5:1 to 3.0:1 and a mixing section length of 4–6 L/D. General-purpose polyethylene screws with compression ratios below 2.2:1 may produce unmelt regions when output exceeds 80 kg/h on a 65 mm extruder. Changeover from higher-density HDPE to 2047G requires a purge sequence because residual high-crystallinity resin can cause optical gels at film start-up. A purge of 5–10 kg with low-density polyethylene or a commercial purge compound at 180–200 °C is common on 50–90 mm lines.
On high-speed horizontal form-fill-seal lines running 80 µm monolayer pouches, 2047G is extruded at melt temperature 245 °C and discharged through a 0.8 mm die gap. The film is treated in-line to 38 mN/m for lamination. Seal initiation occurs at 95 °C; adequate hot-tack measured under ASTM F1921 requires seal bar temperature of 120 °C and dwell time of 0.3 s. When the seal area is free of migratory slip bloom, closure strength under ASTM F88 exceeds 12 N/15 mm. These conditions are not universally transferable to films below 20 µm or to high-slip formulations; converters must validate seal strength and blocking behavior on their own equipment.
