| HS Code | 900071 |
| Density | 1.02 g/cm³ |
| Melting Point | 185 °C |
| Vicat Softening Temperature | 170 °C |
| Tensile Strength At Yield | 45 MPa |
| Tensile Elongation At Break | 250 % |
| Tensile Modulus | 1400 MPa |
| Flexural Modulus | 1300 MPa |
| Izod Notched Impact Strength | No break (23 °C) |
| Shore D Hardness | 72 |
| Water Absorption At Saturation | 1.4 % |
| Water Absorption 24h | 0.2 % |
| Chemical Resistance | Excellent resistance to solvents, oils and hydrocarbons |
As an accredited Arkema Rilsan BMNO SG FILAGE PA11 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Supplied in 25 kg moisture-proof, vacuum-sealed bags, keeping the PA11 filament dry and ready for processing. |
| Container Loading (20′ FCL) | 20′ FCL loading of Arkema Rilsan BMNO SG FILAGE PA11: secure palletized bags, ventilate, protect from moisture, and ensure proper labeling. |
| Shipping | Rilsan BMNO SG FILAGE PA11 ships as non-hazardous polymer granules in sealed moisture-proof bags, typically on pallets. Keep dry, cool, and away from direct sunlight during transit. Avoid prolonged exposure to humidity to prevent moisture pickup, ensuring optimal filament extrusion performance upon delivery. |
| Storage | Store Arkema Rilsan BMNO SG FILAGE PA11 in its original, tightly sealed container in a cool, dry, well-ventilated area, ideally below 30°C. Protect from direct sunlight, moisture, and heat sources. After each use, reseal promptly with desiccant to prevent water absorption. Keep away from oxidizing materials and foodstuffs. |
| Shelf Life | Rilsan BMNO SG FILAGE PA11 has a typical shelf life of 12 months when stored sealed, cool, and dry. |
On a 45 mm diameter, 30:1 L/D single-screw extruder with a barrier screw and grooved feed zone, the conversion of Rilsan BMNO SG FILAGE PA11 into coiled thermoplastic air brake tubing is governed by a melt temperature window of 214–238°C at the die; excursions beyond 245°C produce oxidative degradation, while melt temperatures below 210°C raise melt pressure above 185 bar and cause inner-diameter sag in the downstream vacuum calibration tank. The tube wall must satisfy SAE J844:2015 for burst, tensile, cold flexibility at -40°C, and oil resistance, with fitting retention per FMVSS 571.106 where specified by OEMs; REACH and RoHS restrictions apply to the carbon black masterbatch and to any recycled PA11 fraction. Formulation for the base compound is 100.0 phr of dried BMNO SG FILAGE PA11 with 2.0–2.5 wt% carbon black PA carrier masterbatch to meet UV weathering under SAE J2527 and no plasticizer or impact modifier, because PA11 retains low-temperature ductility at -40°C without monomeric plasticizers. Pre-drying at 80–85°C for 4–6 h in a desiccant dryer with a -40°C dew point is mandatory when plant relative humidity exceeds 60%; residual moisture above 0.10 wt% reduces melt strength and produces elliptical wall-thickness variation in continuous lengths. Melt filtration through a 200-mesh screen pack protects the die from gel contamination, and a two-stage water vacuum calibration at 0.035 MPa holds outer diameter to within ±0.10 mm; an in-line laser gauge controls haul-off speed, and every coil is pressure-tested with dry air at 2.5 MPa as a production proof test before packaging. Terminal products are coiled air brake tubing in 6.4–16.0 mm outer diameter and 50–200 m coil lengths, cut-to-length sleeve assemblies, and formed tube harnesses for heavy-duty trucks, trailers, and bus air suspension systems.
In filament extrusion for fused deposition modeling, Rilsan BMNO SG FILAGE PA11 is processed as 100.0 phr raw resin, with 1.0–2.0 wt% pigment masterbatch only when coloured filament is required; the base resin is pre-dried to below 0.10 wt% residual moisture at 80°C for 4 h in a desiccant dryer producing -40°C dew point air. The governing variable for diameter repeatability is not quench-bath turbulence alone but melt-pressure stability in the gear pump discharge zone: on a 25:1 L/D single-screw extruder fitted with a melt gear pump, pressure fluctuation is maintained below ±2.0 bar to permit a 1.75 ± 0.03 mm or 2.85 ± 0.05 mm filament tolerance measured by a two-axis laser gauge at 0.01 mm resolution. Melt temperature at the die is kept at 215–230°C, and the extrudate is quenched in water at 40°C before a closed-loop haul-off maintains winding tension below 1.2 N. Verification of feed resin mechanical properties follows ISO 527-2:2012 for tensile modulus and elongation at break, ISO 1133-1:2022 for melt volume-flow rate, and ISO 1183-1:2019 for density; additive manufacturing feedstock documentation should reference ISO/ASTM 52921:2013 when coordinate systems and test methodologies are reported. Terminal products are PA11 spools for FDM printers producing functional housings, low-moisture aerospace tooling fixtures, and chemical-resistant jigs where PA6-based filament water absorption of 9.5 wt% saturation would degrade dimensional stability.
Extruded through a 36-hole spinneret with 0.8 mm exit orifices at a melt temperature of 232°C, food-contact industrial brush monofilaments made from Rilsan BMNO SG FILAGE PA11 are formulated at 100.0 phr base resin with 0.1–0.3 phr copper iodide/potassium iodide stabilizer masterbatch and 0.2–0.5 phr TiO2 pigment masterbatch; no plasticizing additive is used because PA11 saturation water absorption of approximately 1.9 wt% per ISO 62:2008 avoids the stiffness loss seen with PA6 in humid food-processing plants. Compliance for hygienic brushware is demonstrated through FDA 21 CFR 177.1500(b) for nylon resins and EU Regulation No 10/2011 as amended when the finished monofilament contacts dry or aqueous food; migration testing follows the food-contact sections of the regulation and is conducted on the finished filament, not on the pellet. The polymer is dried at 85°C for 5 h before extrusion; the spun filaments pass through a water quench at 35°C, then a two-stage hot-air drawing sequence at 70°C and 85°C with draw ratios of 2.8:1 and 1.2:1, followed by tension-controlled annealing at 150°C for 20 s. Online diameter monitoring with a three-axis laser gauge holds ±0.02 mm tolerance over continuous spool lengths, and flexural modulus is verified per ISO 178:2019. Terminal products are 0.30–0.80 mm diameter monofilaments for industrial sweeper brushes, hygienic conveyor belt scrapers, and tubular brush fill in dairy and meat-processing equipment.
In marine aquaculture monofilament extrusion, draw ratio is not freely adjustable because low amorphous orientation below 3.2:1 leaves PA11 line with insufficient knot strength, while ultra-high orientation above 4.3:1 induces surface fibrillation and reduces wet loop knot strength by 18–22% in plant trials on a 45 mm, 30:1 L/D single-screw line. The compound is 100.0 phr Rilsan BMNO SG FILAGE PA11, 0.5–1.0 wt% hindered amine light stabilizer UV masterbatch, and 0.1–0.2 phr stearate-based processing lubricant; the HALS level is raised to 1.0 wt% when monofilament is deployed in high-UV tropical aquaculture sites. Compliance for fishing netting is assessed under ISO 1806:2002 for mesh breaking force and ISO 5079:2020 for fiber tensile strength and elongation, while longline monofilament loops are additionally tested using a wet loop knot method adapted from ISO 1806:2002 to capture the failure mode at the knot. Pre-drying at 85°C for 6 h to residual moisture below 0.08 wt% is critical because marine-grade monofilament is drawn in hot water at 70°C and hot air at 85°C, and any retained moisture generates steam bubbles at the draw point. Extrusion through a 1.2 mm monofilament die at melt temperature 220–235°C is followed by a 30°C water quench, first-stage draw at 3.5:1, second-stage draw at 1.15:1, and relaxation of 5–8% before annealing at 160°C for 15–20 s. Terminal products include 0.40–0.80 mm monofilament longlines, gillnets, and aquaculture cage netting twine.
Where aromatic hydrocarbon permeation resistance and low-temperature flexural fatigue are concurrent requirements, flexible chemical transfer hoses use a coextruded PA11 inner liner based on Rilsan BMNO SG FILAGE PA11; the liner is formulated at 100.0 phr base resin with 2.0–2.5 wt% conductive carbon black masterbatch to achieve surface resistivity below 106 Ω per IEC 60093, preventing electrostatic accumulation in flammable solvent transfer. Compliance is anchored to EN 12115:2011 for rubber and thermoplastics hoses used with liquid chemicals, with pressure classes and temperature ratings declared by the hose manufacturer; when assemblies are used in potentially explosive atmospheres, the conductive inner liner supports ATEX grounding continuity, but the full hose assembly must be certified as a complete item. The PA11 liner is dried at 85°C for 5 h to below 0.10 wt% moisture and extruded on a 60 mm main extruder at melt temperature 225–240°C, while a 45 mm side extruder feeds a thermoplastic polyurethane cover at 170–195°C through a coextrusion crosshead; vacuum calibration holds liner wall thickness to ±0.05 mm, and every metre is subjected to in-line electric continuity and spark testing. Operational limitations include avoidance of concentrated oxidizing acids above 80°C and phenol at elevated temperature, and the liner is not recommended for continuous exposure to steam above 120°C because hydrolytic degradation of the PA11 chain accelerates. Terminal products are chemical suction and discharge hoses, solvent transfer hoses, and fuel delivery hoses in 19–75 mm inner diameter constructed with an internal PA11 liner and an abrasion-resistant TPU cover.
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Arkema Rilsan BMNO SG FILAGE PA11 is a natural, unpigmented polyamide 11 resin designated for melt spinning and monofilament extrusion. The product code separates the base resin family from the conversion route: PA11 identifies the polymer backbone obtained from 11-aminoundecanoic acid, and FILAGE refers to the intended filament-forming process rather than a modified or compounded secondary product. This grade is controlled primarily by melt rheology because filament gauge stability on a production line responds to viscosity drift more strongly than to small changes in pellet density. Typical lot-release documentation includes density measured according to ISO 1183-1 at 1.03–1.04 g/cm³, a melting peak by ISO 11357-3 between 186 °C and 190 °C, and a melt volume-flow rate determined at 235 °C under 2.16 kg according to ISO 1133-1. The MVR interval is lot-specific and should be treated as an incoming quality gate rather than a fixed product constant. Water absorption at saturation in demineralised water at 23 °C is published for unmodified PA11 at approximately 1.8–1.9 % by ISO 62. This moisture uptake places the grade below PA6 and above PA12, which directly affects conditioning behaviour in spun monofilaments used in humid service.
The dominant processing conflict in a single-screw monofilament line with an L/D ratio of 24:1 to 30:1 and a compression ratio of 2.5:1 to 3.0:1 is the balance between sufficient melt fluidity and thermal retention of molecular weight. The die-zone melt temperature is commonly maintained between 220 °C and 250 °C; temperatures below 220 °C may produce unsteady melt formation and surface melt fracture, while temperatures above 250 °C require a short residence time because thermo-oxidative chain scission reduces melt strength. Production lines use desiccant-hopper drying to a residual moisture below 0.08 % by ISO 15512. Drying at 80 °C to 90 °C for 4 h to 6 h with a dew point below −40 °C is applied when ambient relative humidity exceeds 60 % or when hopper inventory has been exposed to plant air. In extrusion, a draw ratio between 3.5:1 and 5.0:1 followed by controlled relaxation in a heated water bath or air oven is typically used for PA11 monofilaments to balance tensile modulus and loop tenacity. Published data for this exact SG FILAGE grade is limited; therefore, the draw-resonance envelope should be established by line trial rather than by analogy with PA6.
Because PA11 crystallises more slowly than PA6 and at a lower undercooling than PA66, the water-quench bath temperature exerts a stronger effect on spherulite size and post-draw orientation in thin sections. Quench temperatures between 15 °C and 40 °C are common for technical monofilaments; lower temperatures increase surface hardness but can generate internal voids when the take-off speed is not synchronised with extruder output. The first godet set is normally run 5 % to 15 % below the die-exit linear speed to allow relaxation before drawing. Because the melt volume-flow rate of Rilsan BMNO SG FILAGE PA11 is specified within a narrow production window, fixed godet speed programmes are generally reproducible. However, a sustained die-pressure deviation greater than ±10 % from a qualified lot baseline indicates moisture ingress, temperature-sensor drift, or a defective heater band on the metering zone. Under these conditions the line is stopped rather than adjusting screw speed, because screw-speed compensation changes shear history and filament ovality.
Melt filtration is critical for filament-grade conversion because gels and carbonised polymer particles from degraded upstream inventory cause filament breaks at small capillary diameters. Production spinnerets below 0.5 mm typically require a screen pack of 20/40/60 mesh or a continuous melt filter with a 20 µm nominal rating to reduce break frequency. The back-pressure penalty from fine filtration must be accounted for in the extruder pressure safety limit; a blocked screen pack can reduce throughput and increase melt residence time, initiating gel formation in the die. Operators monitor head pressure and filter bypass flow as an indirect indicator of contamination. In a single-screw spinning line, head pressure is influenced not only by screen pack condition but also by the temperature profile along the metering zone and the lot MVR. Therefore, head-pressure trend analysis is used to distinguish between a rheological shift in the incoming lot and a physical blockage in the filtration system.
Replacement of PA6 on an existing spinning line requires more than a barrel-temperature offset. PA6 typically exhibits a melting peak near 220 °C and a saturated water absorption near 9–10 % by ISO 62, whereas PA11 melts near 186–190 °C and saturates below 2 %. The lower melting point permits lower die temperatures and reduced thermal budget, but the crystallisation rate of PA11 is slower than that of PA6, which can require a longer or warmer quench bath to prevent filament sag. Conversion from PA12 requires an upward adjustment of die-zone temperature because PA12 melts near 174–178 °C. PA12 also has a lower water absorption of 0.7–0.9 % by ISO 62, which gives it an advantage in applications where dimensional change must be minimised, but PA11 has a higher amide-group concentration and therefore a higher storage modulus after humid conditioning. Purging between these resins should be performed with a low-viscosity PA11-compatible purge or a commercial purging compound capable of removing carbonised PA6 residue from the screw root and die land. Rilsan BMNO SG FILAGE PA11 is not a direct substitute for PA12 in applications requiring the lowest possible water uptake and low-temperature impact; the selection should be based on comparative conditioned tensile data and the target fabrication window.
The values below are typical published ranges for natural, unmodified filament-grade polyamides; the actual lot certificate for Rilsan BMNO SG FILAGE PA11 controls the specification.
| Property | Rilsan BMNO SG FILAGE PA11 | PA12 | PA6 | Test method |
|---|---|---|---|---|
| Density | 1.03–1.04 g/cm³ | 1.01–1.02 g/cm³ | 1.13–1.14 g/cm³ | ISO 1183-1 |
| Melting peak | 186–190 °C | 174–178 °C | 220–224 °C | ISO 11357-3 |
| Water absorption at saturation, 23 °C | 1.8–1.9 % | 0.7–0.9 % | 9–10 % | ISO 62 |
| Tensile modulus, dry | 1,000–1,300 MPa | 1,300–1,600 MPa | 2,800–3,200 MPa | ISO 527-2 |
Mechanical testing of conditioned PA11 monofilaments is referenced to ISO 527-2 for tensile modulus and ISO 527-1 for tensile yield stress, with specimens conditioned at 23 °C and 50 % RH for at least 40 h unless the application is dry as-spun. Because PA11 absorbs less water than PA6, tensile modulus retention in humid service is better than that of short-chain polyamides; however, the absolute dry modulus of PA6 is higher. For brush bristles and filter fabrics, PA11 monofilaments therefore provide lower moisture-induced dimensional change and lower hardness than PA66, which can reduce surface scratching in sensitive cleaning applications. In repeated steam sterilisation, PA11 is often selected over PA6 for monofilament mesh because of its hydrolytic stability; nevertheless, autoclave cycles above 121 °C can still induce chain degradation and must be validated against the end-use standard. The long-chain backbone also contributes to lower density and reduced weight per unit length compared with PA6, which is relevant for high-speed braiding and netting.
Within the Rilsan PA11 family, general-purpose extrusion grades may have broader MVR tolerances than the BMNO SG FILAGE designation. The SG FILAGE grade is positioned for spinning lines where die-swell, gel content, and lot-to-lot viscosity must be tightly controlled. Compared with Rilsan PA11 grades designed for injection moulding, the filament grade is processed at higher draw ratios and lower water-bath temperatures, and it is typically supplied with lower internal lubricant content because lubricant migration can disrupt inter-filament adhesion in woven fabrics. Converters should request the lot-specific rheology curve and gel-count certificate from the supplier when the filament diameter falls below 0.2 mm.
Colour concentrates, UV stabilisers, and slip additives must use a PA11-compatible carrier resin and must not shift the melt-viscosity curve outside the spinning window. Masterbatches based on low-viscosity PA6 or PA12 can create interfacial viscosity mismatch and die-swell non-uniformity in thin monofilaments, producing gauge bands and weak points. Acidic additives, including certain organophosphite stabilisers and high-acid-value waxes, can accelerate amide exchange and reduce melt strength during extended residence at the die. Amine-based processing aids are generally avoided because terminal amine content in PA11 contributes to hydrolysis and crystallisation behaviour; additional amine species may alter post-draw shrinkage. Copper-based heat-stabiliser packages are used in long-life grades, but their concentration must be controlled because copper migration can discolour the filament and affect food-contact status. For food-contact sieve or conveyor-belt applications, migration testing is conducted under Commission Regulation (EU) No 10/2011; in the United States, FDA 21 CFR 177.1500 may apply to repeated-use articles. The converter is responsible for final compliance because fibre construction and additive loading determine the migration limit.
Industrial monofilament applications such as woven filter fabrics, fishing lines, and brush filaments are specified under the supplier’s REACH registration and are normally supplied without substances of very high concern above the communication threshold. RoHS compliance is documented for the homogeneous material according to Directive 2011/65/EU; downstream colourants and processing aids fall outside the pellet supplier’s declaration. Production-scale conversion data from monofilament lines indicates that the primary batch-to-batch control parameter is not pellet density but the melt volume-flow rate ratio between incoming lot and the qualified line setting. A lot accepted at laboratory level may still generate filament gauge drift if the MVR difference exceeds ±10 % from the baseline lot, particularly on spinnerets with capillary diameters below 1.0 mm. Purchasing specifications therefore often fix a MVR tolerance, a delivered moisture content below 0.15 %, and a natural colour match to limit optical defects in transparent or light-pigmented monofilaments.
PA11 is selected over PA6 and PA66 for filtration monofilaments exposed to warm water and oils because the long aliphatic chain reduces amide-group density and slows hydrolytic chain scission. In long-term immersion testing at 80 °C in demineralised water, the tensile strength retention of PA11 monofilaments is typically higher than that of PA6; however, published data for this specific BMNO SG FILAGE configuration is limited, and comparative testing should follow ISO 527-2 and ISO 62. The operational boundary is set by temperature, pH, and dissolved metal ions. Strong mineral acids at pH below 2.0 and strong oxidising agents attack the amide bond, and chlorinated water above 50 ppm free chlorine can produce surface embrittlement in stressed monofilaments. Under these conditions, substitution with a fluoropolymer or polyethersulfone filament may be required. Steam sterilisation at 121 °C for 30 minutes is generally tolerated for short cycles, but repeated autoclaving beyond 100 cycles should be validated by measuring elongation at break and intrinsic viscosity according to ISO 307.
