| HS Code | 292615 |
| Product | Lotrene LLDPE Q1018N |
| Polymer Type | Linear Low Density Polyethylene (LLDPE) |
| Comonomer | Butene-1 |
| Density | 0.918 g/cm³ |
| Melt Flow Rate | 1.0 g/10 min (190°C/2.16 kg) |
| Melting Point | 122 °C |
| Vicat Softening Point | 100 °C |
| Brittleness Temperature | < -70 °C |
| Tensile Strength At Yield | 12 MPa |
| Tensile Strength At Break | 20 MPa |
| Elongation At Break | 900% |
| Flexural Modulus | 260 MPa |
| Shore D Hardness | 55 |
As an accredited Lotrene LLDPE Q1018N factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Lotrene LLDPE Q1018N is supplied in 25 kg net polyethylene bags, palletized and stretch-wrapped for safe transport and storage. |
| Container Loading (20′ FCL) | 20′ FCL of Lotrene LLDPE Q1018N: 20-foot full container, loaded with palletized bags, safely secured for transport. |
| Shipping | Lotrene LLDPE Q1018N ships as non-hazardous resin pellets in moisture-proof polyethylene-lined bags or bulk containers. Keep dry, avoid direct sunlight and extreme heat during transit. Store in clean, well-ventilated areas away from contaminants. Handle with standard equipment to preserve product integrity and prevent bag damage. |
| Storage | Store Lotrene LLDPE Q1018N in a cool, dry, well-ventilated area, away from direct sunlight, heat, and ignition sources. Keep containers tightly sealed to prevent moisture contamination and dust accumulation. Avoid contact with strong oxidizers. Protect pellets from physical damage. Use appropriate handling equipment. Under these conditions, shelf life is stable for several years. |
| Shelf Life | Shelf life: 2 years from manufacture if stored in original packaging, dry, cool, away from direct sunlight. |
In blown-film conversion of heavy-duty shipping sacks, Lotrene Q1018N is introduced as a linear low-density polyethylene with a nominal density of 0.918 g/cm³ and a melt mass-flow rate of 1.0 g/10 min measured under ISO 1183-1:2019 and ISO 1133-1:2022. The grade is processed on high-stalk lines where the primary rheological constraint is bubble stability rather than melt fluidity. A representative production formulation combines 75 wt% to 85 wt% Q1018N with 15 wt% to 25 wt% high-pressure LDPE having a nominal melt index of 0.3 g/10 min to 0.8 g/10 min, 1.0 wt% to 2.0 wt% silica-based antiblock masterbatch, and 0.5 wt% to 1.0 wt% fluoroelastomer polymer processing aid. Extrusion is carried out on a grooved-feed barrier single-screw extruder with an L/D ratio of 25:1 to 30:1, a 250 mm die, die gap of 1.8 mm to 2.2 mm, melt temperature of 195°C to 215°C, blow-up ratio of 2.8:1 to 3.2:1, and frost line height of 600 mm to 800 mm. Field observations on 65 mm single-screw lines indicate that bubble flapping becomes measurable above a blow-up ratio of 3.2:1 unless the frost line is lowered; output rates typically fall within 180 kg/h to 250 kg/h for 80 µm to 150 µm films. Compliance for non-hazardous industrial sacks is assessed under Directive 94/62/EC Annex II, which limits the sum of lead, cadmium, mercury, and chromium(VI) to 100 mg/kg, while mechanical acceptance may reference ASTM D1709-16a for dart impact, ASTM D1922-15 for Elmendorf tear, and ASTM D882-18 for tensile properties. Terminal products include heavy-duty open-mouth sacks, gusseted side-pleat sacks, and liners for corrugated boxes.
The butene branch distribution in Q1018N reduces melt strength relative to high-pressure LDPE; when Q1018N rises above 85 wt% in a three-layer agricultural film, bubble stability on a coextrusion die becomes more sensitive to extensional stress at the die lip, especially at blow-up ratios above 3.0:1. Greenhouse covering films produced from this resin are typically placed under EN 13206:2017 for thermoplastic covering films used in agriculture and horticulture. A three-layer structure positions Q1018N at 75 wt% to 85 wt% in the core, with 10 wt% to 15 wt% LDPE in the outer skins, 5 wt% to 8 wt% hindered-amine light stabilizer masterbatch in the external skin, and 1 wt% to 2 wt% anti-fog concentrate in the internal skin; the overall Q1018N fraction in the finished web therefore approximates 70 wt% to 80 wt%. Production equipment consists of a three-layer coextruded blown-film line with die diameter of 250 mm to 400 mm, die gap of 1.4 mm to 1.8 mm, melt temperature of 190°C to 210°C, blow-up ratio of 2.8:1 to 3.5:1, and film thickness of 150 µm to 200 µm. When UV masterbatch exceeds 8 wt%, die pressure rises and mixing torque increases; published data for Q1018N-specific haze deviation under ISO 14782 is limited, so processors are advised to map optical properties on their own line. Terminal products include greenhouse canopies, low tunnel covers, and silage clamp covers.
Frozen-food packaging lines evaluate Q1018N principally through ASTM D1709-16a at -20°C because the specified failure mode is low-temperature impact rather than room-temperature elongation. A typical formulation uses 85 wt% to 100 wt% Q1018N, 0 wt% to 10 wt% LDPE for gloss modification, 1 wt% to 3 wt% erucamide slip masterbatch, 1 wt% to 3 wt% synthetic silica antiblock masterbatch, and 0.5 wt% fluoroelastomer processing aid. The film is produced on a dual-lip air-ring blown-film system with a 200 mm die, die gap of 1.2 mm to 1.8 mm, melt temperature of 185°C to 205°C, blow-up ratio of 2.0:1 to 2.8:1, and film thickness of 30 µm to 60 µm. At line speeds above 120 m/min, seal dwell time can fall below 0.4 s, and channel leakers become more likely if seal-bar temperature mapping has not been performed under ASTM F88/F88M-21. Compliance for frozen-food contact is governed by FDA 21 CFR 177.1520 and Regulation (EU) No 10/2011; the EU framework requires an overall migration limit of 10 mg/dm² under frozen-food simulant conditions, while good manufacturing practice is addressed under Regulation (EC) No 2023/2006. Terminal products include frozen vegetable pillow packs, freezer bags, and ice-cream pouch liners.
| Application | Primary standard | Test method | Numerical threshold |
|---|---|---|---|
| Heavy-duty shipping sacks | Directive 94/62/EC Annex II | ASTM D1709-16a, ASTM D1922-15 | Heavy metals sum < 100 mg/kg |
| Agricultural greenhouse film | EN 13206:2017 | ISO 527-3, ISO 14782 | Film thickness 150 µm–200 µm |
| Frozen-food packaging | Regulation (EU) No 10/2011 | ASTM F88/F88M-21, ASTM F1249-20 | Overall migration < 10 mg/dm² |
| Flexible packaging sealant web | FDA 21 CFR 177.1520 | ASTM F88/F88M-21, ASTM D2578-17 | Corona target 38 dyn/cm–42 dyn/cm |
| Recycled refuse sacks | Directive 94/62/EC, REACH Annex XVII | ASTM D1922-15, ASTM D1709-16a | Reclaim loading ≤ 30 wt% |
When Q1018N is introduced into sealant webs for laminated flexible packaging, the formulation logic shifts from bubble strength to seal integrity, coefficient of friction, and surface treatment retention. A typical sealant web uses 60 wt% to 80 wt% Q1018N, 20 wt% to 40 wt% LDPE with a melt index of 0.5 g/10 min to 1.0 g/10 min, 1 wt% to 3 wt% antiblock masterbatch, and 0.5 wt% to 2.0 wt% slip masterbatch. The web is produced by three-layer coextrusion on a 300 mm die with die gap of 1.6 mm to 2.0 mm, melt temperature of 190°C to 215°C, blow-up ratio of 2.2:1 to 2.8:1, and thickness of 40 µm to 70 µm. Prior to lamination against PET or BOPP, the inner surface is corona-treated to 38 dyn/cm to 42 dyn/cm and measured under ASTM D2578-17. Regulatory compliance for dry food laminates is established under FDA 21 CFR 177.1520, Regulation (EU) No 10/2011 with an overall migration limit of 10 mg/dm², and Regulation (EC) No 2023/2006 for good manufacturing practice. When line speed exceeds 180 m/min and seal dwell time drops below 0.35 s, hermeticity variation can increase; published data for Q1018N in this specific configuration is limited, so ASTM F88/F88M-21 seal-strength mapping is required before full production. Terminal products include dry food pouches, frozen seafood pouches, and single-serve sachets.
Refuse sack production tolerates higher recyclate loading than food-contact film because non-food applications fall outside FDA 21 CFR 177.1520 and Regulation (EU) No 10/2011; the applicable compliance framework is Directive 94/62/EC Annex II and REACH Annex XVII. A cost-driven formulation combines 50 wt% to 70 wt% Q1018N, 20 wt% to 30 wt% post-industrial LLDPE reclaim, 10 wt% to 20 wt% high-pressure LDPE, and 2 wt% to 5 wt% carbon black masterbatch. Production is carried out on a high-output internal bubble cooling blown-film line with die diameter of 200 mm to 350 mm, die gap of 1.5 mm to 2.2 mm, melt temperature of 185°C to 210°C, blow-up ratio of 2.5:1 to 3.5:1, film thickness of 40 µm to 90 µm, and output of 200 kg/h to 350 kg/h. Above 30 wt% reclaim, melt-pressure fluctuation at the die becomes more pronounced and machine-direction tear resistance measured under ASTM D1922-15 shows wider lot-to-lot variation; operators often reduce line speed by 5 m/min to 10 m/min to recover bubble stability. Terminal products include bin liners, refuse sacks, and institutional trash can liners.
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Lotrene LLDPE Q1018N is produced in Qatar by QAPCO as a butene-linear low-density polyethylene pellet grade for blown-film extrusion. The nominal density is 0.918 g/cm³ when measured according to ISO 1183-1:2019, and the melt flow rate is 1.0 g/10 min at 190 °C under a 2.16 kg load per ISO 1133-1:2022. The base resin is synthesized by a low-pressure gas-phase copolymerization route in which ethylene and a butene comonomer produce ethyl short-chain branches. Those branches reduce crystalline fraction and density relative to high-density polyethylene while the polymer backbone remains essentially linear, distinguishing it from long-chain branched autoclave low-density polyethylene. The pelletized product is intended for general-purpose film, industrial liners, heavy-duty sacks, and carrier bag applications. The exact stabilization package is lot-specific and must be confirmed against the certificate of analysis; typical film-grade polyethylene stabilization includes a hindered phenolic antioxidant, a phosphite processing stabilizer, and an acid scavenger.
In terms of molecular weight distribution, Q1018N belongs to the medium-distribution film class. The melt flow ratio between 21.6 kg and 2.16 kg loads provides an approximate indication of shear thinning; a higher ratio is associated with broader molecular weight distribution and generally easier extrusion, although at some cost to mechanical properties. The linear backbone produces a lower crystallization temperature than high-density polyethylene, increasing the heat load on the cooling equipment but allowing a lower extrusion melt temperature. These characteristics place the grade in the general-purpose butene-LLDPE segment rather than the high-stiffness or high-clarity specialties.
Melt strength in Q1018N is constrained by the absence of long-chain branching. In extensional flow, the material does not display pronounced strain hardening; extensional viscosity grows approximately linearly with extension rate. The practical result is that bubble stability on blown-film equipment is less self-correcting than with autoclave LDPE. Localized thinning does not generate a sharp local increase in extensional resistance, so thickness deviations can persist or worsen if frost-line height and air-ring pressure are not actively controlled. On a 45 mm grooved-feed extruder with a 28:1 L/D barrier screw, stable processing is achieved with a flat to slightly reverse temperature profile from 180 °C in the feed zone to 200 °C–220 °C at the die. Melt pressure before the screen pack should remain below the extruder manufacturer’s maximum, typically near 35 MPa for this screw class, to limit shear heating. When melt temperature exceeds 230 °C, the phosphite stabilizer consumption rate increases and the oxidative induction time measured by ISO 11357-6 can fall. Lower melt temperatures reduce odor and taste carryover in food-contact film, but excessively low temperatures increase die lip melt fracture and reduce gauge uniformity.
Compared with a hexene-based LLDPE of the same nominal density and melt flow rate, Q1018N generally yields lower dart impact and lower machine-direction Elmendorf tear when films are produced under equivalent blow-up ratio, die gap, and frost-line conditions. The mechanism is the shorter C4 branch length; ethyl branches are less effective than C6 or C8 branches at increasing tie-molecule density across the lamellar stack. Differences become more visible below 40 µm gauge because the crystalline orientation effects dominate the fracture behavior. Film property verification should use ASTM D1709-16a for dart impact and ISO 6383-2 or ASTM D1922-15 for tear propagation. Compared with high-density polyethylene film grades, Q1018N shows lower tensile modulus and yield stress but higher puncture resistance and improved environmental stress crack resistance in liner service. Against autoclave LDPE, Q1018N offers higher tensile strength at break and dart impact at equivalent gauge but lower melt strength and higher neck-in during cast film or extrusion coating operations.
Processing settings for Q1018N on a 45 mm grooved-feed extruder with a 28:1 L/D barrier screw and a 150 mm dual-lip air ring fall within the following ranges: die melt temperature 190 °C–220 °C; die gap 1.5 mm–2.5 mm; blow-up ratio 2.0–3.0; frost-line height 4–8 die diameters. The narrow die gap increases melt velocity and reduces drawdown strain, but also raises head pressure. Screens in the range 100–250 µm protect the die lips without excessive backpressure. Internal bubble cooling is recommended when line speed exceeds 120 m/min, because the additional heat removal stabilizes the bubble and reduces gauge variation. A dual-lip air ring with the lower lip angled at 20 °–30 ° from horizontal improves bubble stability for this linear grade. If the frost-line height is set too low, the film retains machine-direction orientation and develops high MD shrink; if it is too high, bubble wobble and gauge bands appear. Output rate and bubble stability are strongly dependent on die diameter and screw speed; published data for this specific configuration is limited, so line trials should begin at the lower end of the melt temperature range.
Flow surging on Q1018N can be induced by insufficient feed section pressure in grooved-feed extruders. In such cases, output oscillates at the screw rotation frequency and produces periodic gauge variation. Monitoring melt pressure before the screen changer with a pressure transducer is a standard diagnostic; fluctuations greater than 0.5 MPa at constant screw speed suggest feed instability or screen blockage. The resulting film gauge variation is captured downstream by capacitance or beta gauges. Corrective action is directed at screw temperature, feed throat cooling, and screen pack condition rather than simple screw speed adjustment. Because this grade is linear, flow surging can also be triggered by a worn screw or barrel in the compression section, which reduces the pressure-generating capacity of the grooved-feed zone.
Substitution of autoclave LDPE with Q1018N in a three-layer heavy-duty sack structure requires adjustment of screw speed, die gap, and blow-up ratio. Because Q1018N has lower melt extension viscosity, the bubble must be run with higher internal pressure or lower stalk height to maintain stability. On a 65 mm coextrusion line with a 2.0 mm die gap, processors commonly blend Q1018N with LDPE at 20 %–30 % by weight in the core or outer layers. The blend retains a portion of LDPE’s melt strength while adding the butene-LLDPE contribution to puncture resistance and tear propagation. The optimum blend ratio is gauge-dependent and must be confirmed by ASTM D1709-16a for dart impact, ISO 6383-2 for Elmendorf tear, and ISO 527-3:2018 for tensile properties. Coextruded structures using Q1018N in the sealant layer can exhibit a higher seal initiation temperature than LDPE-rich layers because the melting range of the LLDPE grade begins near 105 °C. Seal strength must be verified on the intended packaging machine using ASTM F88/F88M-21 because jaw temperature, dwell time, and pressure determine the final seal window.
Industrial liners and agricultural films represent a separate conversion window. On blown-film lines producing 80 µm liners, Q1018N can be evaluated for downgauging to 70 µm when dart impact, puncture resistance, and elongation at break satisfy end-use requirements. Validation should include ASTM D1709-16a, ASTM D5748-19 for puncture propagation, and ISO 527-3:2018 for tensile strain at break. In applications involving agricultural chemicals, the formulation must be tested for chemical resistance because polyethylene can absorb nonpolar species and swell. Published data for this specific configuration is limited; field tests under actual chemical exposure are required before downgauging decisions are finalized.
Color masterbatch and antiblock concentrates can be incorporated into Q1018N at typical let-down ratios from 2 % to 5 % by weight, provided the carrier resin is compatible with LLDPE. Inorganic antiblock masterbatches increase surface roughness and reduce film-to-film friction, but they can degrade optical haze and lower dart impact. The trade-off becomes measurable beyond 3000 ppm of antiblock additive, though the exact threshold depends on particle size distribution and masterbatch dilution. Optical haze is measured according to ASTM D1003-21, and gloss at 60° is measured by ASTM D2457-21. These values must be compared on films of identical gauge and processing history because orientation and surface texture dominate measured differences.
Representative resin property data for Lotrene LLDPE Q1018N are given below. Values are typical and not specification limits; certificates of analysis govern specific lots.
| Property | Test method | Typical value |
| Density | ISO 1183-1:2019 | 0.918 g/cm³ |
| Melt flow rate | ISO 1133-1:2022 at 190 °C/2.16 kg | 1.0 g/10 min |
| Melting temperature (DSC) | ISO 11357-3:2018 | 122 °C |
| Tensile stress at yield | ISO 527-2:2012 | 11 MPa |
| Tensile strain at break | ISO 527-2:2012 | greater than 800 % |
Compliance statements for Q1018N must be verified against current product stewardship bulletins. The grade can be considered for food-contact applications only when the finished article meets the specifications of 21 CFR 177.1520 or Regulation (EU) No 10/2011 under the intended conditions of use. Extractables and overall migration testing is performed on the finished film, not on the pellet alone.
| Regulatory text | Designation | Application boundary |
| US FDA food contact | 21 CFR 177.1520 | Olefin polymers permitted for food contact subject to paragraph (c) limitations and end-use temperature/extractables conditions |
| EU food contact | Regulation (EU) No 10/2011 | Overall migration and specific migration limits for plastic food-contact materials; compliance is formulation- and condition-of-use-specific |
| EU chemicals regulation | Regulation (EC) No 1907/2006 | REACH registration, authorization and restriction requirements for substances and articles |
| EU hazardous substances | Directive 2011/65/EU | RoHS restrictions for electrical and electronic equipment; not automatically applicable to packaging film |
Storage and handling boundaries for Q1018N follow standard polyethylene practice. Resin should be stored in a dry, ventilated area below 50 °C and away from ultraviolet sources. If pellets are transferred from cold storage to a humid production hall, surface condensation must be removed by hopper drying at 60 °C–80 °C for 2 h. The grade is not hygroscopic; drying addresses surface moisture only. Melt processing should avoid extended residence time above 250 °C or direct flame contact, because thermo-oxidative chain scission and odor generation can occur. The material is incompatible with strong oxidizing acids and halogenating agents at process temperatures. Direct contact with aromatic solvents or chlorinated hydrocarbons should be avoided unless chemical resistance testing according to ASTM D543-21 or equivalent indicates otherwise.
