| HS Code | 360970 |
| Density | 0.939 g/cm³ |
| Melt Flow Index | 5.0 g/10 min (190°C/2.16 kg) |
| Comonomer | butene-1 |
| Molecular Weight Distribution | narrow |
| Tensile Yield Strength | 17.2 MPa |
| Elongation At Break | 100% |
| Flexural Modulus | 650 MPa |
| Low Temperature Impact Strength | 30 J at -40°C |
| Environmental Stress Crack Resistance | >1000 hours |
| Vicat Softening Temperature | 95 °C |
| Melting Point | 122 °C |
| Brittleness Temperature | -80 °C |
As an accredited Dow DOWLEX LLDPE 2607G factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Pellets supplied in 25 kg polyethylene-lined bags, palletized and stretch-wrapped for safe transport. |
| Container Loading (20′ FCL) | 20′ FCL container loading of Dow DOWLEX LLDPE 2607G: palletized, moisture-protected, evenly distributed, secured properly for safe transit. |
| Shipping | Ship DOWLEX LLDPE 2607G as non-hazardous plastic resin in sealed, food-grade-compatible packaging or lined bulk containers. Protect from moisture, direct heat, and contamination. Store away from oxidizing agents and foodstuffs. Use covered, dry transport, secure loads, and avoid excessive stacking. Ventilate enclosed spaces and follow standard material-handling practices to preserve product quality. |
| Storage | Store DOWLEX LLDPE 2607G in a cool, dry, well-ventilated area away from direct sunlight, heat sources, and ignition sources. Keep original containers tightly closed to prevent moisture contamination and dust accumulation. Avoid exposure to excessive humidity or UV radiation. No hazardous storage conditions typically required; maintain good housekeeping to minimize static discharge and fire risk. |
| Shelf Life | Shelf life is typically 12 months when stored in original packaging in a cool, dry area, away from sunlight and excessive heat. |
Heavy-duty shipping sack and industrial liner lines running DOWLEX 2607G at melt temperatures of 195–220°C and blow-up ratios of 2.0:1–2.5:1 exhibit a bubble-stability envelope governed primarily by frost-line geometry and air-ring airflow rather than by melt index alone. The density of 0.917 g/cm³ (ASTM D792-20) and melt index of 2.0 g/10 min at 190°C/2.16 kg (ASTM D1238-20/ISO 1133-1:2022) place the grade within a formulation window that industrial converters typically fill with 70–85 wt% 2607G, 10–20 wt% LDPE, and 5–15 wt% internal recycled trim when melt filtration at 80–100 µm is maintained. Blown-film equipment for this segment includes 90 mm grooved-feed extruders with 30:1 L/D, dual-lip air rings, and die gaps of 1.8–2.4 mm. Non-food regulatory obligations are governed by REACH (EC) No 1907/2006 and Packaging and Packaging Waste Directive 94/62/EC; heavy-metal limits for packaging components are verified under EN 13428, while filled sack durability under cyclic handling is assessed after conditioning to ISO 2233:2000 and tensile creep under ASTM D2990-17. Terminal articles include gusseted valve sacks for polymer granules, mineral fillers, cementitious powders, FIBC liners with static-dissipative surfaces, and heavy-gauge construction debris bags. A documented operational boundary is that increasing post-consumer recycle above 30 wt% without corona treatment and volatile purging can reduce dart impact below the minimum required for 50 kg fill weight, particularly at film thicknesses below 160 µm.
In three-layer coextruded dairy pouch and liquid food packaging structures, 2607G is allocated to the sealant layer at 75–100 wt% of the polymer fraction, with the balance being LDPE or a plastomer used to lower seal initiation below 105°C. The food-contact status of the grade is governed by FDA 21 CFR 177.1520(c) olefin polymer clearance, including the conditions in Table 2 of that section, and in the European Union by Commission Regulation (EU) No 10/2011 Annex I, with overall migration testing under EN 1186-1:2002. Production-scale blown-film coextrusion lines use die gaps of 1.2–1.8 mm, blow-up ratios of 2.0:1–2.8:1, and melt temperatures of 195–225°C; the frost line is maintained at 6–10 times the die diameter to stabilize a nylon or EVOH barrier layer without inducing interlayer flow instabilities. Terminal products include 5–20 L bag-in-box liners, dairy pouches, frozen vegetable packaging, and stand-up pouch sealant webs. Pre-drying is not required at ambient relative humidity below 60%; when storage has exposed pellets to condensation, a hopper dryer at 65°C for 2–4 h removes surface moisture without altering slip additive distribution. A processing limitation arises when the sealant layer contains more than 2 wt% of a low-molecular-weight slip additive; migration to the tie-layer interface can reduce lamination bond strength below 1.5 N/15 mm after 30 days at 40°C.
Cast stretch-hood and collation-film lines processing 2607G operate with a different thermal history than blown-film equipment: the melt exits a flat die at 220–255°C onto a chill roll held at 15–25°C, which freezes the film before secondary crystallization can develop high haze. In this segment the grade is compounded into a blend containing 50–80 wt% 2607G, 10–30 wt% metallocene LLDPE, 5–15 wt% LDPE, and 1–3 wt% cling agent masterbatch, with each percentage expressed on total polymer weight. Regulatory compliance for industrial pallet films is based on REACH (EC) No 1907/2006 and EU Directive 94/62/EC; mechanical acceptance is evaluated by ASTM D5748-19 puncture resistance, ASTM D5458-12 cling, and ASTM D882-18 tensile properties. Cast film die gaps are typically 0.4–0.9 mm, and output speeds of 150–350 m/min require air-knife and vacuum-box positioning to suppress melt draw resonance. Terminal products include pallet stretch hoods, collation films for bottled goods, and high-cling wrappers where puncture resistance above 1,500 g is specified. A practical boundary observed on high-speed cast lines is that amine-containing cling additives should not be combined with acid-modified tackifiers, because the interaction can raise film haze and reduce cling force below 40% of the control after 7 days of roll storage.
When agricultural silage and greenhouse cover films are down-gauged below 25 µm, the 2.0 g/10 min melt index of 2607G permits stable bubble formation at 190–215°C melt temperature and 2.2:1–2.8:1 blow-up ratio, but multi-season performance depends primarily on UV stabilizer dispersion. Formulations for silage bags and greenhouse films typically use 70–90 wt% 2607G, 5–20 wt% LDPE, and 2–6 wt% UV/HALS masterbatch; the masterbatch must be metered at the feed throat rather than dry-blended to avoid stabilizer concentration drift exceeding ±0.3 wt% across a 12 h run. Blown-film equipment uses die gaps of 1.6–2.2 mm and barrier screws with 25:1–30:1 L/D. The applicable product standards include EN 13206:2017 for thermoplastic stretch films for wrapping bales and ISO 4892-2:2013 for accelerated weathering; silage films are additionally checked for oxygen permeability under ASTM D3985-17 to ensure values below 10,000 cm³/(m²·day·atm) at 23°C. Terminal products include greenhouse covers with anti-drip and diffusing properties, silage bags, bale wrap, and mulch films down-gauged to 15–25 µm. A limitation in this segment is that high-carbon-black masterbatches above 6 wt% can increase melt pressure by 10–15% and reduce bubble stability on narrow die lips, especially when ambient temperature falls below 15°C.
In down-gauged T-shirt carrier bags and household refuse sacks, the 2.0 g/10 min melt index of 2607G allows processing on high-stalk and low-stalk blown-film lines, but the dart impact tolerance becomes highly sensitive to frost-line height at thicknesses below 25 µm. Blend formulations commonly contain 40–70 wt% 2607G, 20–40 wt% post-industrial recycled LLDPE, and 5–10 wt% LDPE; the recycled fraction should be pre-screened through a 100 µm melt filter to prevent gel streaks and pinholes. Extrusion conditions for this segment use die gaps of 1.2–1.8 mm, blow-up ratios of 3.0:1–4.0:1, and melt temperatures of 180–210°C; on high-stalk configurations, the stalk height is held at 8–12 times the die diameter. Compliance is assessed under EN 13592:2017 for household refuse sacks and ISO 7765-1:2004 for the free-falling dart method; carrier bags destined for retail distribution also fall under the essential requirements of EU Directive 94/62/EC. Terminal products include T-shirt carrier bags, drawstring refuse sacks, kitchen bin liners, and produce bags. The main process boundary is that adding more than 10 wt% calcium carbonate masterbatch for cost reduction can reduce machine-direction tear resistance below 20 N/mm and create white stress-whitening marks on fold lines after filling.
Coextruded surface protection films use 2607G in the backing layer, where the grade’s 0.917 g/cm³ density provides conformability and low elastic recovery around profiled substrates. A typical backing-layer formulation consists of 60–85 wt% 2607G, 10–25 wt% LDPE, and 5–15 wt% mLLDPE, while the adhesive skin layer is produced separately with a pressure-sensitive adhesive formulation that is not part of the 2607G fraction. Cast coextrusion equipment is operated with die gaps of 0.5–1.0 mm, melt temperatures of 210–240°C, and chill-roll temperatures of 18–28°C; line speeds of 100–250 m/min are typical because films below 20 µm require tighter tension control to prevent neck-in and edge curl. Regulatory requirements for non-food surface protection films include REACH (EC) No 1907/2006 and RoHS Directive 2011/65/EU, with volatile organic compound content tested under ISO 11890-2:2020 where low-odor customer specifications apply. Adhesion performance is released according to FINAT FTM 1 and ASTM D3330/D3330M-18 peel methods, with typical unwinding forces between 0.5 and 3.0 N/25 mm. Terminal products include temporary protective films for stainless steel sheet, powder-coated aluminum profiles, glass, and high-gloss laminates. Published data for this exact adhesive/backing structure is limited, so the window is reported from converter-run trials rather than resin producer datasheets. An operational incompatibility is that direct contact between the adhesive layer and 2607G containing high levels of erucamide slip can cause adhesive transfer and delamination after 60 days at 50°C; therefore slip packages are limited to ≤1,500 ppm in this structure.
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Dow DOWLEX 2607G is a linear low-density polyethylene resin polymerized in a solution process with octene as the primary comonomer. The resin is supplied as free-flowing pellets with a nominal density of 0.917 g/cm³ measured by ASTM D792 or ISO 1183-1:2019 and a nominal melt index of 0.90 g/10 min measured by ASTM D1238 or ISO 1133-1:2022 at 190 °C under a 2.16 kg load. Differential scanning calorimetry according to ASTM D3418 places the peak melting temperature between 121 °C and 124 °C. The product is intended for monolayer and coextruded film extrusion in which low-temperature impact resistance, tear resistance, and seal integrity must be retained at reduced thickness. In contrast to high-pressure low-density polyethylene, the molecular structure is essentially linear with short-chain branching introduced by the octene comonomer; this architecture provides a different balance of tensile, tear, and seal performance.
Resin lot verification on incoming material usually includes melt index and density checks against the supplier certificate of analysis. A capillary rheometer operated with a die length-to-diameter ratio of 30:1 at 190 °C can be used to detect lot-to-lot viscosity drift; a variation of more than 5% in apparent shear viscosity at 100 s⁻¹ may indicate changes in molecular weight distribution that affect film bubble stability. Gel-permeation chromatography with 1,2,4-trichlorobenzene at 150 °C is the reference technique for measuring molar mass averages and polydispersity index, but it is not typically required for routine incoming inspection.
The octene comonomer introduces longer short-chain branches than butene or hexene. During crystallization, the branches are rejected from the polyethylene crystal lattice and accumulate in interlamellar amorphous regions. This increases the probability of tie-molecule formation between adjacent lamellae, which is measured indirectly by ASTM D1922 Elmendorf tear and ASTM D1709 dart impact tests. Comparative trials on a 40 µm three-layer blown film produced on a 250 mm annular die with a 2.5:1 blow-up ratio indicate that DOWLEX 2607G retains higher machine-direction tear resistance than butene-LLDPE of equivalent density and melt index. The improvement is most pronounced under low-temperature impact conditions; however, the same structure may reduce optical clarity relative to hexene-based metallocene grades. Published data for this specific industrial configuration is limited, and users should generate film data on the target line to confirm ranking.
Low-temperature performance of DOWLEX 2607G is commonly assessed by ASTM D1709 dart impact at -20 °C or ASTM D1922 Elmendorf tear after conditioning at 0 °C. The octene branches delay the onset of brittle failure because tie-molecule density is maintained as temperature decreases. In freezer-film applications, a film thickness of 40 µm must retain seal integrity at temperatures as low as -25 °C; this requires proper orientation and cooling during film fabrication.
Single-screw blown-film lines with smooth-bore or grooved-feed sections and L/D ratios of 24:1 to 30:1 are suitable for DOWLEX 2607G. A barrier screw with a Maddock mixing section is recommended to reduce melt-temperature gradients and gel accumulation. The melt temperature measured at the die should be maintained between 190 °C and 230 °C. Prolonged exposure above 240 °C can generate oxidized gels and reduce dart impact strength. Die gaps of 1.0 mm to 1.8 mm and blow-up ratios of 2.0:1 to 3.0:1 are common. Frost line height is usually controlled between 250 mm and 450 mm; a higher frost line generally reduces film haze but may lower impact strength. Dual-lip air rings with chilled air at 5 °C to 15 °C improve cooling uniformity and permit higher throughput. Because the resin has a melt index of 0.90 g/10 min, die pressure on a 90 mm extruder at 180 kg/h can exceed 300 bar depending on die gap and melt temperature; the extruder drive and screen changer should be specified accordingly.
In cast-film extrusion, DOWLEX 2607G is typically processed on a single-screw extruder with a 90 mm to 120 mm barrel diameter, a 30:1 L/D ratio, and a barrier screw equipped with a spiral or Maddock mixing section. Melt temperature at the die exit is maintained between 200 °C and 240 °C; chill-roll temperatures are set between 15 °C and 25 °C to control quench rate and film crystallinity. A flat die gap of 0.5 mm to 0.8 mm is used for film thicknesses from 20 µm to 80 µm. The absence of long-chain branching means that melt curtain stability is more sensitive to air-gap distance and line speed than high-pressure LDPE; excessive draw resonance can be suppressed by reducing the air gap or increasing melt temperature within the specified range.
Die-lip deposit formation in long cast-film campaigns is associated with low molecular weight fractions migrating to the die surface. This phenomenon can be reduced by maintaining melt temperatures below 240 °C and by using a die-lip cleaner with a suitable fluoropolymer dispersion. Frequent screen-pack changes are recommended when running high levels of regrind, because crosslinked gel particles can accumulate behind the breaker plate and raise melt pressure.
DOWLEX 2607G has a broader molecular weight distribution than typical metallocene-catalyzed LLDPE grades. This broadened distribution increases shear thinning under extrusion conditions, reducing motor amps and melt pressure at the same melt index, but it also lowers extensional strain hardening relative to high-pressure LDPE. In tubular film extrusion, the resin is often blended with 10 wt% to 30 wt% high-pressure LDPE to restore bubble stability and improve optical appearance. Such blends modify the tear balance: addition of LDPE generally decreases machine-direction tear strength and increases transverse-direction tear strength, a shift that must be evaluated by ASTM D1922 on the exact die and frost-line configuration.
Typical end-use categories include food pouches, freezer films, liquid packaging liners, industrial can liners, and agricultural greenhouse films. In each case, the final article performance is determined by the combined effect of film thickness, processing conditions, and additive package; the base resin alone is not a complete film formulation. Film grades intended for high-speed packaging lines with low seal initiation temperatures benefit from the octene comonomer, but the final sealing window must be verified on the packaging machine because dwell time, jaw design, and pressure vary with machine type.
For heavy-duty sacks and industrial liners, DOWLEX 2607G is used in monolayer films from 80 µm to 150 µm. Property retention after film fabrication is evaluated by ASTM D1709 for dart drop impact, ASTM D1922 for Elmendorf tear, and ASTM D882 for tensile strength and elongation. The octene-based LLDPE allows downgauging in these structures compared with conventional butene-LLDPE when impact and tear are the limiting performance attributes, but the reduction is line-specific and must be confirmed with production-scale aging and puncture tests. For applications requiring outdoor exposure, the base resin does not contain a UV stabilizer package; addition of a hindered amine light stabilizer masterbatch is required to prevent embrittlement.
In three-layer or five-layer barrier films containing polyamide or ethylene vinyl alcohol, DOWLEX 2607G is placed in the sealant skin. Heat-seal strength is measured according to ASTM F88 with a dwell time of 0.5 s and a jaw pressure of 40 psi; the seal initiation temperature is typically lower than that of high-pressure LDPE of similar melt index because the linear backbone and octene branches increase segmental mobility without lowering melt temperature excessively. Hot-tack performance is evaluated on a form-fill-seal packaging machine, and the resin is generally suited to high-speed vertical and horizontal form-fill-seal lines with sealing temperatures above 100 °C. The sealant layer thickness is commonly 20 µm to 40 µm. At these thicknesses, seal strengths measured by ASTM F88 are more sensitive to jaw contamination and film surface slip additives than to the base resin density.
DOWLEX 2607G is designed to meet the U.S. Food and Drug Administration requirements for olefin polymers under 21 CFR 177.1520(c), conditional on end-use extraction testing of the finished package. European food-contact compliance is generally assessed under Commission Regulation (EU) No 10/2011, which specifies an overall migration limit of 10 mg/dm² and specific migration limits for additives. The base resin contains no intentionally added heavy metals; conformance to the RoHS Directive 2011/65/EU therefore depends on the absence of non-compliant colorants or processing aids. REACH registration obligations under EC No 1907/2006 apply to the manufacturer and importers; downstream users are responsible for verifying that final formulations and packaging articles comply with national legislation.
| Standard/Regulation | Relevant Condition | Assessment Boundary |
|---|---|---|
| 21 CFR 177.1520(c) item 3.2a | Olefin polymer for food-contact articles | Base resin meets specification when used within density and temperature limits; end article extraction testing required |
| EU 10/2011 | Plastic materials and articles intended to contact food | Overall migration limit 10 mg/dm²; final article and additives require conformity |
| EC No 1907/2006 (REACH) | Substance registration and downstream communication | Manufacturer or importer registration required; article obligations depend on substances of very high concern |
| 2011/65/EU (RoHS) | Restriction of hazardous substances in electrical and electronic equipment | Base polyolefin typically complies; final component responsible for pigments and additives |
Because the base resin does not contain slip or antiblock additives unless otherwise stated on the certificate of analysis, film surface functionality is controlled by masterbatch addition. An antiblock loading of 5,000 to 10,000 ppm of diatomaceous earth or synthetic silica is typical for thin films; slip additives such as erucamide or oleamide are incorporated at 500 to 1,500 ppm. These loadings modify the coefficient of friction and heat-seal behavior and must be optimized on the target line, because excessive slip can lower ASTM F88 seal strength and create printing adhesion defects.
Storage at ambient temperatures below 40 °C and exclusion of direct ultraviolet exposure minimize oxidative alteration of the stabilizer package. In hot climates, silo storage exceeding six months should be performed under nitrogen blanketing. Edge trim and regrind from DOWLEX 2607G may be reintroduced into the film process at levels up to 20 wt% without measurable loss of dart impact, provided the regrind is not thermally degraded and is sieved to remove gel particles. Contact with copper-containing alloys in melt-processing equipment should be avoided because copper ions catalyze thermo-oxidative chain scission. The resin is not intended for medical implant applications, and no statement of biocompatibility should be inferred from food-contact status.
