| HS Code | 123203 |
| Density | 0.924 g/cm³ |
| Melt Flow Index 190 C 2 16 Kg | 0.75 g/10 min |
| Melting Point | 122 °C |
| Vicat Softening Point | 101 °C |
| Brittleness Temperature | -70 °C |
| Tensile Strength At Yield | 11 MPa |
| Tensile Strength At Break | 25 MPa |
| Elongation At Break | 800 % |
| Flexural Modulus | 300 MPa |
| Shore D Hardness | 56 |
| Environmental Stress Crack Resistance | >1000 h |
| Haze 50 μm Film | 12 % |
| Gloss 60 50 μm Film | 60 |
| Dart Drop Impact 50 μm Film | 150 g |
As an accredited QATAR CHEMICAL LLDPE LOTRENE FD0474 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | QATAR CHEMICAL LLDPE LOTRENE FD0474 is supplied as free-flowing pellets in 25 kg polyethylene bags, shrink-wrapped and palletized. |
| Container Loading (20′ FCL) | Loading LLDPE Lotrene FD0474 into 20' FCL: secure palletized or bulk bags, prevent shifting, ensure clean, dry container for safe transport. |
| Shipping | Shipment of Qatar Chemical LLDPE Lotrene FD0474, a linear low-density polyethylene resin in pellet form. Packed in 25 kg bags on pallets. Non-hazardous, non-dangerous cargo. Transport in clean, dry containers; protect from moisture, direct heat, and contamination. Handle with care to avoid bag damage. |
| Storage | Store Lotrene FD0474 LLDPE in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and open flames. Keep material in its original sealed packaging to prevent moisture and contamination. Avoid stacking too high to protect bags from tearing. Protect from mechanical damage and dust accumulation. No special hazardous storage is required under normal conditions. |
| Shelf Life | Shelf life is 12 months from delivery date when stored in original packaging under cool, dry, shaded conditions. |
On high-output cast film lines producing hand and machine-direction stretch wrap at final thicknesses of 8–23 µm, Qatar Chemical LOTRENE FD0474 is generally assigned to the core layer of a three-layer coextruded structure rather than the skin layers. The nominal density of 0.918 g/cm³ measured by ASTM D1505 and the melt mass-flow rate of 4.0 g/10 min determined under ISO 1133-1:2022 at 190 °C with a 2.16 kg load provide sufficient drawdown for take-off speeds above 300 m/min on cast film units with screw L/D ratios of 30:1 to 36:1. A typical extruder temperature profile begins at 180 °C in the feed section and rises to 240–250 °C at the adapter and die, while the slot die gap is held at 0.7–0.9 mm and the air gap between die lip and chill roll is maintained at 150–250 mm. The chill roll set point is kept between 18 °C and 25 °C because quench rate controls crystallinity and therefore film modulus, haze, and cling agent retention. In the skins, polyisobutylene-based cling masterbatch is added at 1.5–3.0 wt% and erucamide slip concentrate at 500–1200 ppm; the core layer may contain no slip or a reduced slip dose of 200–500 ppm to limit blocking without destroying unwind performance. Addition of FD0474 in the core at 60–70 wt% of total structure is common, with the balance composed of metallocene or C8 plastomer skins. The stretch film is drawn to pre-stretch ratios between 1.5:1 and 3.0:1 on powered pre-stretch rollers; puncture resistance is evaluated by ASTM D5748 and cling force by ASTM D5458. Failure modes on high-speed turret winders include core layer tear propagation at splice points and edge fold-over when melt curtain neck-in exceeds trim width. Reducing die lip temperature below 230 °C can increase shear stress and visible die lines; exceeding 265 °C can cause oxidative degradation, gel formation, and a loss of melt curtain stability. No pre-drying is normally required, but pellet surface condensation after outdoor storage should be removed with a hopper dryer at 60 °C for 3–4 h when visual surface moisture is present.
In extrusion coating and lamination of paper, paperboard, aluminum foil, and oriented polypropylene, FD0474 is processed at melt temperatures of 255–270 °C through flat dies with a die gap of 0.5–0.8 mm. Because the resin is a linear butene copolymer without long-chain branching, the melt curtain exhibits greater neck-in than high-pressure LDPE; on a 1000 mm die, edge bead may form at 30–60 mm from each deckle unless LDPE is blended into the formulation. A blend of 20–30 wt% autoclave or tubular LDPE is commonly used to stabilize the curtain and permit coating weights from 10 g/m² to 25 g/m² at line speeds of 80–200 m/min. Adhesion to aluminum foil is achieved by priming with polyethylene imine at 0.2–0.5 g/m² dry coat; without primer, the bond strength measured by ASTM F904 falls below the value required for lamination. In food-contact lamination, FD0474 meets the olefin polymer provisions of FDA 21 CFR 177.1520(c) and the monomer restrictions of EU Regulation 10/2011 Annex I. Coating weight variation across the web is controlled by internal deckling, die bolt adjustment, and melt curtain edge pinning; a variation of more than ±2 g/m² across a 1200 mm web can create tunneling in laminates. When coating onto paperboard for hot drink cups, the polymer layer is heat sealed at 120–160 °C; excessive oxidation at melt temperatures above 280 °C produces odor and reduces seal strength. The final structures are used as sachet laminates, medical packaging base webs, and protective coatings on metallized paper.
Blown-film operations running thin-gauge sacks, freezer bags, and consumer packaging at film thicknesses from 12 µm to 50 µm use FD0474 on extruders with grooved feed sections and barrier screws at L/D ratios from 24:1 to 30:1. Melt temperatures at the die are held at 190–230 °C; die gaps are set between 1.2 mm and 2.0 mm. The bubble configuration is normally a high-stalk or in-pocket system with a blow-up ratio of 2.5:1 to 3.0:1 and a frost line height of 6–8 die diameters. Internal bubble cooling and high-capacity air rings are used when line speed exceeds 60 m/min, because the 4.0 g/10 min MFR reduces bubble stability compared with fractional-melt blown-film grades. A core layer containing FD0474 at 55–70 wt% is coextruded with HDPE or LDPE skins; HDPE addition at 10–20 wt% of total structure raises stiffness, while LDPE addition at 5–15 wt% improves bubble heal-in after film gauge deviations. For freezer bags, dart impact is tested under ASTM D1709 Method A at film gauges of 25 µm to 40 µm; because butene-LLDPE generally shows lower low-temperature impact than octene-LLDPE at −20 °C, converters replace 20–40 wt% of the core with C8 LLDPE or plastomer when target values exceed published C4 film data. Film tear resistance is measured by ASTM D1922 in both machine and transverse directions. The end products are drawstring trash bags, point-of-sale produce bags, and carton liners for frozen food. In these structures, FD0474 contributes processability and downgauging capability, but not maximum freezer puncture resistance. Low melt temperatures below 175 °C increase melt fracture at the die lip, particularly in narrow die gaps.
As a sealant web in laminated stand-up pouches and vertical form-fill-seal packaging, FD0474 is often blown or cast into film at 30–60 µm and then adhesive-laminated to PET or OPP. The seal initiation temperature of a butene-LLDPE is above that of EVA and metallocene plastomer, so jaw temperature settings on packaging machines are typically 10–15 °C higher than for EVA sealants; this is offset by the absence of acetic acid odor and better chemical resistance. Hot tack is measured under ASTM F1921, heat-seal strength under ASTM F88, and film tensile properties under ASTM D882. Slip and antiblock masterbatches are added at 400–800 ppm erucamide and 1000–2000 ppm silica; above these levels, seal strength can fall because low molecular weight slip additive migrates to the seal interface and reduces interdiffusion. The film is run on blown film lines at a blow-up ratio of 2.2:1 to 2.8:1; for cast sealant webs, the die gap is kept at 0.6–0.8 mm. In liquid pouch packaging structures, FD0474 is used as the inner sealant layer at 40–60% of total film thickness. End products include frozen vegetable pouches, cereal liner films, and liquid aseptic packaging with foil barriers. The table below lists the main food-contact compliance designations that apply to unmodified FD0474 and its blend partners in these structures.
| Compliance framework | Designation / clause | Condition relevant to FD0474 |
|---|---|---|
| U.S. olefin polymers | FDA 21 CFR 177.1520(c) | Olefin polymers, including ethylene/butene copolymers, used in contact with food. |
| EU plastics food contact | EU Regulation 10/2011 Annex I | Ethylene and butene monomers are authorized; overall migration limit 10 mg/dm². |
| Good manufacturing practice | EC 2023/2006 | Purity and process control at resin production and conversion. |
In cast agricultural stretch wrap for baled silage at nominal thicknesses from 20 µm to 30 µm, FD0474 serves as the core layer with a content of 55–65 wt%, while the skins are formulated with metallocene LLDPE or C8 plastomers to raise puncture resistance. The processing window on a cast line is slightly lower than in industrial stretch film: die temperatures are kept at 235–250 °C, chill roll temperature at 20–28 °C, and air gap at 120–200 mm. UV stabilization is essential; a HALS-based UV masterbatch is dosed at 2–6 wt% depending on the exposure period and film thickness, and the resulting film is tested for elongation retention after accelerated weathering according to ASTM D4329 or ISO 4892-2. Cling is generated by polyisobutylene or proprietary tackifier masterbatch in the outer layers at 1.0–2.5 wt%; excessive cling growth after storage can block the roll and is checked by ASTM D5458. The film must withstand puncture from stalk ends and crop stems; puncture resistance is evaluated by ASTM D5748, while tear propagation is measured by ASTM D1922. Because butene-LLDPE has lower puncture and tear than C8 and C6 copolymers at equal density, converters do not use FD0474 as a monolayer in silage wrap; its role is as a stiffness and cost-balancing core layer. The end product is bale wrap supplied in 250 mm to 750 mm rolls, stretched to 50–70% elongation during wrapping. Published performance data for FD0474 in agricultural silage wrap is limited; these ranges derive from C4 LLDPE grades of equivalent 0.918 g/cm³ density and 4.0 g/10 min MFR.
Downstream from a three-layer blown-film tower, large-format liners for flexible intermediate bulk containers and heavy-duty industrial packaging are fabricated from film in which FD0474 occupies the core layer at 50–70 wt% and high-density polyethylene skins provide surface stiffness at a total film thickness of 60–120 µm. The die gap is set at 2.0–2.5 mm, blow-up ratio at 2.0:1 to 2.5:1, and die melt temperature at 200–220 °C; the wider die gap and moderate melt temperature avoid sharkskin at low shear rates. Coextruded HDPE skins contribute to Elmendorf tear measured by ASTM D1922, but FD0474 in the core improves interlayer adhesion and stress-crack resistance compared with an all-HDPE structure. The film is welded into liners by ultrasonic or hot-wedge sealing at 130–170 °C; seal strength is verified by ASTM F88. Because the end use includes packaging of powdered chemicals and fertilizers, compatibility testing follows ASTM D543 for chemical resistance; polar organic solvents may swell the butene-LLDPE core, so the liner is selected only for dry or aqueous products unless a barrier film is added.
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QATAR CHEMICAL LLDPE LOTRENE FD0474 is a butene-copolymer linear low-density polyethylene produced by gas-phase ethylene polymerization and intended for blown-film extrusion. The grade is defined by its nominal melt mass-flow rate of 0.70 g/10 min at 190 °C under 2.16 kg load, measured according to ISO 1133-1:2022, and by its nominal density of 0.921 g/cm³ at 23 °C, measured according to ISO 1183-1:2019. These values place FD0474 in the medium-molecular-weight, low-crystallinity branch of the LLDPE family. The linear backbone provides higher tensile strength, puncture resistance, and downgauging capacity than high-pressure low-density polyethylene of equal film gauge, while the butene branch type limits some fracture properties relative to hexene- or octene-based LLDPE. FD0474 is supplied as natural pellets; converters must verify the presence or absence of slip, antiblock, or processing-aid additives because those additives are not guaranteed by the base specification.
Because FD0474 is not an extrusion-coating grade, its melt mass-flow rate of 0.70 g/10 min is too low for conventional extrusion coating or cast-film lines designed for 4–12 g/10 min resins. Attempts to process FD0474 on extrusion coating lines with chill-roll draw distances above 150 mm may result in draw resonance and edge tear because the melt has insufficient extensional flow capacity at high draw speeds. This distinction is critical in grade selection: FD0474 belongs to the blown-film segment, not the cast-film or extrusion-coating segment.
FD0474 differs from LDPE primarily in branch architecture. High-pressure LDPE contains long-chain branches that increase extensional strain-hardening and melt elasticity. FD0474, as a gas-phase Ziegler-Natta butene LLDPE, has predominantly short-chain branches and minimal long-chain branching. Consequently, its bubble at low blow-up ratios is less stable than LDPE and requires a narrower die gap and more precise internal bubble air control. Capillary viscosity comparisons performed according to ISO 11443:2021 using a die with L/D 20/1 show shear thinning typical of a broad molecular weight distribution. That shear thinning reduces die pressure on a 65 mm grooved-feed extruder relative to a metallocene LLDPE of the same melt mass-flow rate, because the wider distribution allows greater viscosity reduction under high shear. At the low-shear rates encountered in the bubble, residual viscosity retains sufficient melt strength to prevent excessive sag. The intermolecular comonomer distribution is broader than in metallocene grades; low-molecular-weight chains are more branched and melt at lower temperatures, which can widen the heat-seal range but may also create hot-tack limitations at high conversion speeds.
The density of 0.921 g/cm³ corresponds to a crystalline mass fraction of approximately 48–50% using a two-phase model with amorphous polyethylene density of 0.855 g/cm³ and crystalline density of 1.000 g/cm³. The melting peak by ISO 11357-3 is typically near 124 °C, but the endotherm is broad and the peak position shifts with heating rate. That broad melting distribution supports heat sealing across a range of jaw temperatures, although it does not by itself define the seal initiation point.
On a monolayer blown-film line consisting of a 65 mm single-screw grooved-feed extruder with a 30:1 L/D barrier screw, a 40/80/40 mesh screen pack, and a 250 mm spiral mandrel die, barrel temperatures for FD0474 are typically set from 180 °C to 210 °C, with screen and die zones at 200 °C to 215 °C. The die gap should be maintained between 2.0 mm and 2.5 mm; gaps below 1.6 mm can induce sharkskin melt fracture at output rates above 120 kg/h because high melt viscosity generates excessive die entry stress. Blow-up ratios from 2.2:1 to 2.8:1 and frost line heights from 5 to 9 die diameters stabilize the bubble. Setting the frost line below 4 die diameters increases machine-direction orientation, reduces transverse-direction tear measured by ISO 6383-2, and raises film tension during winding. High-output lines exceeding 1.5 kg/h per cm die circumference generally require internal bubble cooling and a dual-lip air ring to remove heat without destabilizing the freeze line. If bubble oscillation occurs during ramp-up, the first corrective action is to increase the die gap if melt temperature is already at the upper 215 °C limit.
Lot-to-lot variation in FD0474 is controlled by the manufacturer within established release limits; converters should nevertheless retain incoming-lot melt mass-flow rate and density data per ISO 1133-1 and ISO 1183-1 for process drift detection. A shift in MFR from 0.60 to 0.80 g/10 min may reduce bubble stability and alter frost-line height at constant air-ring settings. Density drift above 0.925 g/cm³ increases film stiffness and may raise tear anisotropy. In three-layer coextrusion, each layer should be monitored independently, because density variation in the core changes the bending modulus of the entire structure.
Falling-dart impact energy is determined on a 38 µm monolayer using ASTM D1709 Method A with a 38.1 mm dart and 660 mm drop height. At equal film thickness, FD0474 exhibits lower dart impact than hexene LLDPE because butene comonomer is less efficient in generating tie-chain concentrations between lamellar crystals. This is a general feature of C4 LLDPE and not a grade-specific defect. Elmendorf tear measured by ISO 6383-2 is anisotropic in blown film: machine-direction tear values are consistently lower than transverse-direction tear values because of chain orientation along the haul-off direction. The magnitude of tear anisotropy changes with blow-up ratio and frost line height; higher blow-up ratios generally increase transverse tear and reduce machine-direction tear.
Heat-seal performance is not defined by the melting peak alone. The peak melting endotherm by ISO 11357-3 and the Vicat softening point by ISO 306 Method A50 are equilibrium and rate-dependent indicators, but seal initiation must be mapped on production sealing equipment with heat-seal strength per ASTM F88 across 90–120 °C jaw temperature settings. A broad sealing range is useful for vertical form-fill-seal lines where dwell times are below 0.5 s and seal pressure is 0.2–0.4 MPa. Dart drop data generated on a 38 µm film cannot be linearly extrapolated to 80 µm or 120 µm structures because orientation and cooling differences change the fracture energy relationship.
Heavy-duty sacks and industrial liners use FD0474 in three-layer A/B/A coextrusions with 10–20 wt% LDPE skins. The LDPE skins reduce melt pressure, stabilize the bubble, and shift seal initiation to lower jaw temperatures; the FD0474 core contributes tensile strength, puncture resistance, and dart impact capacity. If film thickness is reduced from 100 µm to 80 µm, tensile properties per ISO 527-3 and tear properties per ISO 6383-2 should be revalidated because downgauging alters the orientation balance and can weaken bottom-gusset seals. For agricultural films, FD0474 is typically compounded with UV stabilizer masterbatch; unmodified resin will fail by photo-oxidative embrittlement after prolonged sunlight exposure. Lamination film structures often use FD0474 as the sealant or core layer in combination with BOPET or BOPP print webs; corona treatment to a surface energy of 38–42 mN/m is required for lamination or printing.
Substitution of FD0474 for a C6 or C8 LLDPE in a three-layer film reduces material cost but generally requires a thickness increase of 10–20% to match falling-dart impact values under ASTM D1709, because butene branches generate fewer load-bearing tie molecules than hexene or octene branches at identical density and melt mass-flow rate. The penalty is not uniform; it narrows at high blow-up ratios above 2.5:1 and wide die gaps above 2.0 mm, where orientation is more balanced and fracture energy is less controlled by machine-direction chain alignment. Against metallocene LLDPE, FD0474 provides broader processing latitude on older LDPE lines: die pressure at constant screw speed is lower, the onset of sharkskin is delayed at narrow die gaps, and bubble stability is less sensitive to small changes in frost line height. However, optical properties of FD0474 are inferior to metallocene grades; haze measured per ASTM D1003 is higher and gloss lower because of the broader intermolecular composition distribution. Selection therefore depends on whether the application is driven by film mechanical performance or by clarity and high-speed processability. The comparison should be verified on the target line because differences in screw design, die port design, and air-ring type can reverse apparent rank ordering in tear and dart impact.
Storage in a covered area below 50 °C and away from direct sunlight is sufficient; the resin is not hygroscopic and does not require predrying unless condensation has formed on pellet surfaces after movement from cold storage to a warm high-humidity environment. For food-contact applications, the base olefin polymer may fall under 21 CFR 177.1520 in the United States, but the finished package must still be tested for overall migration and specific migration according to food type and use conditions under 21 CFR 174.5. In the European Union, compliance with Regulation (EU) No 10/2011 and applicable national law is the responsibility of the converter, not the resin manufacturer. Continuous service above 80 °C is outside the recommended envelope for standard unmodified LLDPE, and exposure to strong oxidizing acids, chlorinated solvents, or aromatic hydrocarbons should be evaluated for environmental stress cracking resistance using ASTM D1693 under bending strain and surface-active agent as specified. Waste from the resin should be handled according to local regulations; the material is not classified as hazardous under current European CLP criteria.
