LyondellBasell Icorene 3545 YEW 2180 Polyethylene, Linear Low Density
- Product Name: LyondellBasell Icorene 3545 YEW 2180 Polyethylene, Linear Low Density
- Factroy Site: Yinchuan, Ningxia, China
- Price Inquiry: sales8@ascent-chem.com
- Manufacturer: Ascent Petrochem Holdings Co., Limited
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- LyondellBasell Icorene 3545 YEW 2180 Polyethylene, Linear Low Density is typically used in formulations when melt flow rate and density and processing temperature and cooling rate must be controlled within specific ranges.
| HS Code | 711565 |
| Polymertype | Linear Low Density Polyethylene (LLDPE) |
| Density | 0.935 g/cm³ |
| Meltflowrate | 3.5 g/10 min (190°C/2.16 kg) |
| Tensilestrengthyield | 11.0 MPa |
| Tensilestrengthbreak | 22.0 MPa |
| Elongationatbreak | 700% |
| Flexuralmodulus | 310 MPa |
| Vicatsofteningpoint | 100°C |
| Meltingpoint | 125°C |
| Hardnessshored | 50 |
| Waterabsorption | <0.01% |
| Dielectricconstant | 2.3 |
| Ul94flamerating | HB |
As an accredited LyondellBasell Icorene 3545 YEW 2180 Polyethylene, Linear Low Density factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | LyondellBasell Icorene 3545 YEW 2180 LLDPE is packaged in 25 kg bags, 40 bags per 1,000 kg shrink-wrapped pallet. |
| Container Loading (20′ FCL) | 20′ FCL loaded with LyondellBasell Icorene 3545 YEW 2180 Linear Low Density Polyethylene, 25 kg bags, palletized, shrink-wrapped, securely stowed. |
| Shipping | LyondellBasell Icorene 3545 YEW 2180 LLDPE ships as non-hazardous, free-flowing pellets in 25 kg bags, octabins, or bulk trucks/railcars. Keep containers closed, store dry in a cool, ventilated area away from heat, sunlight, moisture, and ignition sources. No UN transport classification; follow standard industrial handling and local regulations. |
| Storage | Store LyondellBasell Icorene 3545 YEW 2180 Polyethylene, Linear Low Density in a cool, dry, well-ventilated warehouse, away from direct sunlight, heat, flames, and strong oxidizers. Keep original packaging closed to prevent moisture, dust, and contamination. Protect from ultraviolet light. Store at ambient temperature, avoid excessive stacking, ensure aisles are clear, and use proper grounding to control static. |
| Shelf Life | Shelf life: typically 24 months in unopened original packaging, stored cool, dry, protected from sunlight; retest after prolonged storage. |
When Silage Cover Film Must Balance Outdoor Weathering against Machine-Direction Tear Propagation
For silage pit covers and bale wrap, the film is produced on high-stalk air-ring blown-film towers rather than cast-film lines because the service load includes repeated wind loading, UV exposure through the ensiling season, and puncture from stalk stubble. Icorene 3545 YEW 2180 is charged at 80–90 wt% with 10–20 wt% high-pressure LDPE exhibiting a melt flow rate of 0.8–2.0 g/10 min measured by ISO 1133-1:2022; the YEW 2180 additive package is supplier-fixed and should be treated as a non-adjustable formulation component unless weathering validation is repeated. Tensile behaviour is determined by ISO 527-3:2018 or ASTM D882-18, agricultural film classifications are assessed under EN 13206:2017, and accelerated UV exposure is conducted according to ISO 4892-2:2013 cycle 1A. Extrusion is typically performed on a 60–90 mm single-screw extruder with L/D 24:1–30:1, die gap 1.8–2.5 mm, blow-up ratio 2.0–3.0, melt temperature 190–215°C, frost-line height 6–8 die diameters, and internal bubble cooling. Terminal products include 25–100 µm silage pit covers, 20–40 µm bale wrap, 40–80 µm mulch film, and 120–200 µm greenhouse side sheeting. Re-grind incorporation above 15 wt% generates gel defects and lowers dart impact; moisture above 200 ppm creates bubble pinholes. Published data for this exact grade in 200 µm greenhouse service is limited, and outdoor exposure validation under EN 13206 remains required.
Extrusion coating of paperboard for case-ready food packaging imposes a higher melt temperature and a narrower air-gap window than blown film because the polymer must oxidize lightly, draw down against neck-in, and bond to corona-treated paperboard without exceeding migration limits or generating off-taste. In this configuration, Icorene 3545 YEW 2180 is run at 100 wt% in monolayer coatings with a coating weight of 12–25 g/m², or at 60–80 wt% blended with 20–40 wt% LDPE in coextruded structures where the grade forms the heat-seal layer. Compliance is anchored to 21 CFR 177.1520(c)(3.1a) and (3.2a) for olefin polymers and to Regulation (EU) No 10/2011, with overall migration not exceeding 10 mg/dm² under end-use food-contact conditions. The coating line is typically a tandem extrusion laminator with a 90–120 mm extruder, L/D 30:1, melt temperature 280–320°C, flat die gap 0.5–0.8 mm, air gap 150–250 mm, chill roll 10–20°C, and corona pre-treatment of the substrate to 38–42 mN/m. Terminal products include paperboard cups, folding cartons, frozen-food cartons, and food-service wraps. Substrate moisture above 6% produces pinholes; a corona level below 36 mN/m causes peel failure. For direct contact with hot-filled or high-fat foods, published migration data for this exact grade configuration is limited, and end-use compliance testing is mandatory.
How Does Chill-Roll Quench Rate Govern Cling and Machine-Direction Tensile in Cast Pallet Wrap?
Cast stretch-film production for pallet unitization uses a chill-roll quench rather than a bubble geometry because the absence of a frost line and the immediate surface quench produce lower thermal shrinkage and higher machine-direction elongation. Icorene 3545 YEW 2180 is incorporated as the structural core at 70–80 wt% of total film mass, with 10–20 wt% metallocene-catalysed ULDPE or EVA copolymer and 2–5 wt% cling additive; for non-cling machine wrap, the grade may be run at 100 wt%. Peel cling is quantified by ASTM D5458-95, tensile by ASTM D882-18, and protrusion puncture by ASTM D5748-95. The line is typically a 75–150 mm single-screw extruder, L/D 30:1, melt temperature 240–270°C, die gap 0.5–1.0 mm, air gap 5–15 cm, chill roll 18–24°C, and line speed 400–800 m/min; a vacuum box and air knife stabilize the web. Terminal products include 12–15 µm hand wrap, 15–23 µm machine stretch film, and 20–35 µm pre-stretched wrap. Raising chill-roll temperature above 30°C retards crystallization and increases surface blocking; cling-additive migration requires at least 24 h aging before peel-cling values stabilize. At plastomer fractions above 25 wt%, puncture resistance improves but holding force declines, and the package must be revalidated against pallet-load stability test protocols.
Heavy-Duty Sack and FIBC Liner Film: Bubble Dynamics, Backpressure, and Puncture Requirements
Heavy-duty sack and flexible intermediate bulk container liner production on blown-film lines demands higher melt strength and puncture resistance than general-purpose film, and the process is normally run at a wider blow-up ratio to increase transverse tear resistance. Icorene 3545 YEW 2180 is formulated at 60–80 wt% with 20–40 wt% LDPE or 10–20 wt% HDPE to adjust stiffness and creep; monolayer structures with 80–150 µm thickness are common. Compliance references include ISO 21898:2004 for flexible intermediate bulk containers, ASTM D1709-16a for dart impact, ASTM D1238-20 for melt flow, and ASTM D1505-18 for density. The extrusion line typically uses a 90–120 mm grooved-feed single-screw extruder with L/D 28:1–33:1, die gap 1.8–2.4 mm, BUR 2.2–3.5, melt temperature 195–220°C, and internal bubble cooling with die-head backpressure of 150–250 bar. Terminal products include heavy-duty shipping sacks 80–150 µm, FIBC liners 50–100 µm, industrial liners 100–200 µm, and construction film 150–250 µm. Edge-trim re-grind above 20 wt% raises gel count and lowers dart impact; a sudden frost-line height change moves transverse tear weakness into the sack wall. Published data for this exact grade under repeated FIBC drop-test certification is limited, and drop tests per ISO 21898 must be performed on each sack design.
| Sector | Primary standard or code | Typical Icorene fraction | Critical test parameter |
|---|---|---|---|
| Agricultural film | EN 13206:2017 / ISO 527-3:2018 | 80–90 wt% | UV durability classification, tensile impact |
| Extrusion coating | 21 CFR 177.1520(c)(3.1a) / EU 10/2011 | 60–100 wt% | 10 mg/dm² overall migration, 38–42 mN/m adhesion |
| Cast stretch wrap | ASTM D5458-95 / ASTM D882-18 | 70–80 wt% core | Peel cling, machine-direction elongation |
| Heavy-duty sacks | ISO 21898:2004 / ASTM D1709-16a | 60–80 wt% | Dart impact, gel count |
| Rotational molding | 21 CFR 177.1520(c)(3.1a) / ISO 1133-1:2022 | 100 wt% powder | MFR, particle size 35 mesh |
| Geomembrane sheet | ASTM D6693-04 / ASTM D5397-07 | 100 wt% or 70–80 wt% | Stress-crack resistance, carbon black dispersion |
Rotational molding of agricultural water tanks and transport containers uses ground LLDPE powder rather than pellet feed, and the process window is governed by mold surface temperature, rotational speed ratio, and cooling rate rather than shear history. Published data for this exact Icorene 3545 YEW 2180 configuration in rotomolding is limited; before dry blending, the powder must be characterized by ISO 1133-1:2022 for MFR and by sieve analysis at 35 mesh (500 µm). In a full formulation, the grade is used at 100 wt%; if external UV or carbon black masterbatch is added, 0.5–2.0 wt% is typical but must be validated for pinhole resistance and impact. The molding cycle is run on a biaxial rotational molder at 270–300°C oven temperature, 18–35 min residence depending on wall thickness 3–10 mm, rotational speed ratio 4:1, and forced-air cooling followed by water mist. Compliance for potable water tanks references 21 CFR 177.1520(c)(3.1a) and ASTM D1998-15. Terminal products include vertical water storage tanks, chemical dosing tanks, transport bins, and agricultural hoppers. Overheating above 300°C causes oxidation, yellowing, and impact failure; uneven mold release can produce warpage. Direct food-contact use under repeated filling requires end-use migration testing at the maximum service temperature of the tank.
Geomembrane Calendering, Carbon Black Dispersion, and Stress-Crack Resistance in LLDPE Sheet
Flat-die extrusion and polished-roll calendering of LLDPE geomembrane sheet are selected when service requires puncture resistance, low-temperature flexibility, and stress-crack resistance under soil loading. Icorene 3545 YEW 2180 may be run at 100 wt% or blended with 20–30 wt% HDPE or LDPE; carbon black is incorporated as a masterbatch to a final concentration of 2.0–2.5 wt% in the sheet. Tensile stress-strain is measured by ASTM D6693-04, and stress-crack resistance by ASTM D5397-07; carbon black dispersion is assessed by ISO 18553:2002 or equivalent. The line employs a twin-screw compounding step for carbon black dispersion, followed by a single-screw extruder with L/D 24:1–30:1, flat die width 1.5–3.0 m, three-roll stack temperature 60–90°C, and sheet thickness 0.5–1.5 mm. Terminal products include canal liners, pond liners, landfill covers, and temporary containment sheets. Carbon black agglomerates above 10 µm produce microvoids and reduce stress-crack resistance; regrind above 15 wt% lowers ESCR; moisture above 0.2 wt% creates surface splay. Published data for this exact grade in 1.5 mm geomembrane sheet is limited, and ASTM D5397 must be performed on each production lot.
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- LyondellBasell Icorene 3545 YEW 2180 Polyethylene, Linear Low Density is manufactured under an ISO 9001 quality system and complies with relevant regulatory requirements.
- COA, SDS/MSDS, and related certificates are available upon request. For certificate requests or inquiries, contact: sales8@ascent-chem.com.
LyondellBasell Icorene 3545 YEW 2180 is a linear low-density polyethylene rotational-molding powder supplied with a UV-stabilized additive package. The designation refers to a rotomolding grade rather than a pelletized injection-molding, film-extrusion, or blow-molding resin. The base polymer is an LLDPE with short-chain branching from α-olefin comonomer; the comonomer type and molecular-weight distribution are not disclosed in the concise datasheet. Representative datasheet values include a nominal density of 0.934 g/cm³ measured to ISO 1183-1:2019 and a melt mass-flow rate of 3.5 g/10 min determined at 190 °C under a 2.16 kg load to ISO 1133-1:2022. The powder is processed on carousel, shuttle, and rock-and-roll rotational-molding lines. The melt flow rate is higher than many HDPE rotomolding powders, which permits shorter sintering time, but it also requires tighter internal air temperature control. The standard powder is not supplied with a release agent or pigment dispersion unless specified by the buyer. At storage conditions below 60% relative humidity, pre-drying is generally unnecessary; surface condensation from outdoor storage must be removed before molding.
| Property | Test Method | Representative Value |
|---|---|---|
| Nominal density | ISO 1183-1:2019 | 0.934 g/cm³ |
| Melt mass-flow rate, 190 °C/2.16 kg | ISO 1133-1:2022 | 3.5 g/10 min |
| Tensile strength at yield | ISO 527-2 | 16 MPa |
| Elongation at break | ISO 527-2 | >600% |
| Flexural modulus | ISO 178 | 550 MPa |
| Melting point | ISO 11357-3 | 122 °C |
| Vicat softening point | ISO 306 | 112 °C |
| Brittleness temperature | ASTM D746 | -70 °C |
| Environmental stress-crack resistance, 100% Igepal CO-630, 50 °C | ASTM D1693-15 condition A | >1000 h |
The values listed are single-point representative datasheet values, not statistical specification limits. Lot-to-lot variance is controlled by the manufacturer’s release protocol; the molder is responsible for incoming inspection against the purchasing specification.
Does the YEW 2180 Stabilization Package Alter the Sintering Window or Oxidative Stability?
The YEW 2180 additive package contributes weathering resistance; it does not replace the thermal antioxidant system during processing. Oven air temperatures between 280 °C and 310 °C are typical for this powder, with the mold internal air temperature reaching a peak internal air temperature of 190 °C to 205 °C. Sustained internal air temperatures above 220 °C can exhaust the antioxidant package, producing discoloration, an increase in melt flow rate, and a loss of elongation at break. Oxidative-induction-time measurement by differential scanning calorimetry to ISO 11357-6 is the relevant test for stabilizer content, but published OIT values for this specific configuration are limited. Outdoor weathering should be evaluated on the finished part using ISO 4892-2 or ASTM G154; resin datasheet values do not predict service life under arbitrary UV flux and moisture conditions. Dark-colored parts in full sun can reach surface temperatures 30–50 °C above ambient, which reduces mechanical stiffness and may accelerate antioxidant consumption.
Powder handling influences wall-thickness uniformity more than pellet geometry does. The grade is classified for rotational molding; a maximum particle size of 500 µm is typical for uniform heating and melt densification. Oversize particles can produce pinholes and a rough inner surface, while an excessive fines fraction can cause static buildup, uneven feeding, and localized overheating. A cast aluminum mold with a 6 mm wall thickness may require 18–25 min oven residence at 290 °C, but this is not a universal cycle; it must be adjusted with thermocouple data from the mold interior. Mold rotation speed on a carousel machine is commonly set with a 4:1 to 5:1 arm ratio, with secondary axis speed adjusted to prevent powder sliding in flat-bottom molds. Forced-air cooling is preferred; water-spray or mist cooling reduces cycle time but increases differential shrinkage and can warp large flat panels. Demolding at temperatures below 90 °C reduces distortion. Release agents must be selected for post-molding operations; silicone-containing releases are not recommended if the part will be painted or adhesive-bonded without surface treatment.
When Peak Internal Air Temperature Remains Between 190 °C and 205 °C
Sintering quality in the 3545 YEW 2180 powder depends more on mold internal air temperature than on oven set point. At internal air temperatures below 190 °C, the powder particles may not fully coalesce; the inner wall can show an orange-peel texture, and the part may fail by pinhole leakage. From 190 °C to 205 °C, the polymer is in a low-viscosity melt state capable of densifying against the mold surface without excessive chain scission. Above 205 °C, bubble porosity can increase, particularly in sections thicker than 8 mm, because volatiles cannot escape before the surface solidifies. The grade’s melt flow rate of 3.5 g/10 min to ISO 1133-1:2022 is higher than many HDPE rotomolding grades with melt flow rates below 2.0 g/10 min; this reduces the time to full sintering but narrows the processing window on thick sections. The molder should record the internal air temperature at the mold vent with a thermocouple data logger sampling at 0.1 Hz or faster. If the peak internal air temperature overshoots and the part shows yellowing, the tensile elongation to ISO 527-2 and the environmental stress-crack resistance to ASTM D1693-15 should be measured before release. Published data for this specific machine configuration is limited, so startup trials on the production mold are required.
Rheologically, rotational molding is a low-shear process. The melt flow rate of 3.5 g/10 min provides an index of flow at 190 °C, but wall densification occurs at low shear rates below 10 s⁻¹; high-shear viscosity data are not relevant to rotational molding quality. The melting point of 122 °C to ISO 11357-3 means that the peak internal air temperature must exceed the crystalline melting range by approximately 70–85 °C to achieve complete particle fusion. The Vicat softening point of 112 °C to ISO 306 should not be interpreted as a continuous load-bearing service temperature; structural stiffness declines significantly below the Vicat point. The grade is not suitable for hot-fill containers above 60 °C under sustained internal pressure unless the geometry is reinforced and the service condition is validated by long-term creep testing to ISO 899-1.
Environmental Stress-Crack Resistance, Chemical Contact, and Regulatory Position
The ESCR value of >1000 h in 100% Igepal CO-630 at 50 °C measured to ASTM D1693-15 condition A is a primary differentiator for liquid containment. The result means that under the specified surfactant exposure, the molded material resists slow crack growth; it does not guarantee compatibility with a specific chemical at a given stress level. The finished part must be immersed in the intended fluid under ASTM D543-20 or ISO 22088-1 to evaluate mass change, dimensional change, and stress cracking. Strong oxidizing acids, aromatic hydrocarbons, and halogenated solvents are known to swell or degrade polyethylene; the grade should not be used with these fluids without validated finished-part testing. The grade is used in agricultural sprayer tanks, secondary containment trays, and outdoor storage bins. With a flexural modulus of 550 MPa to ISO 178, the material is less stiff than HDPE; large flat panels require ribs, draft angles, or metallic cradles to control deflection. Food-contact suitability must be confirmed by the finished-article manufacturer under 21 CFR 177.1520 and, where applicable, EU Regulation 10/2011; the resin datasheet does not transfer approval to the molder. Parts destined for electrical or electronic applications must be assessed under RoHS Directive 2011/65/EU for restricted substances, including cadmium, lead, mercury, and hexavalent chromium, if pigments or additives introduce them.
Compared with general-purpose butene-LLDPE film grades, the 3545 YEW 2180 powder has a melt flow rate of 3.5 g/10 min, whereas film grades commonly operate below 1.0 g/10 min for bubble stability and often use pelletized geometry. Film-grade pellets are not interchangeable with rotomolding powder; the pellets must be ground to a particle size below 500 µm and re-stabilized for oven residence. Compared with HDPE rotomolding grades at densities from 0.940 g/cm³ to 0.950 g/cm³, the LLDPE grade provides higher elongation at break and higher ESCR but lower flexural modulus. Compared with metallocene LLDPE rotomolding powders, the 3545 YEW 2180 grade may show different low-temperature impact and warpage behavior; published data for this specific comparative configuration is limited. Injection-molding, blow-molding, and film-extrusion lines are not appropriate process routes for this powder unless prior reformulation and particle-shape modification are performed.
