Barlog Plastics KEBALLOY ECO FE 200407/1 Nylon 12, with recycled content
- Название продукта: Barlog Plastics KEBALLOY ECO FE 200407/1 Nylon 12, with recycled content
- Сайт Factroy: Округ Юду, Ганьчжоу, Цзянси, Китай
- Запрос цены: admin@ascent-chem.com
- Производитель: Ascent Petrochem Holdings Co., Limited
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- Barlog Plastics KEBALLOY ECO FE 200407/1 Nylon 12, with recycled content is typically used in formulations when recycled content and melt viscosity and processing temperature and moisture content must be controlled within specific ranges.
| Код ТН ВЭД | 317942 |
Как аккредитованная компания Barlog Plastics KEBALLOY ECO FE 200407/1 Nylon 12 с заводом по переработке содержания, мы соблюдаем строгие протоколы качества - каждая партия подвергается строгим испытаниям для обеспечения последовательных стандартов эффективности и безопасности.
| Упаковка | Barlog Plastics KEBALLOY ECO FE 200407/1 Nylon 12 with recycled content is supplied in sealed moisture-proof packaging, quantity 25 kg. |
| Погрузка контейнера (20-футовый контейнер) | 20′ FCL: pellets packed in 25 kg bags on pallets, shrink-wrapped, loaded efficiently to maximize capacity. |
| Доставка | Ship as dry, sealed, moisture-proof containers to protect Nylon 12 from humidity. Keep away from extreme heat, sources of ignition, and direct sunlight. No special hazard classification; however, ensure clear labeling, prevent contamination, and secure loads during transit. Store in a cool, ventilated area to maintain material integrity. |
| Хранение | Store in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, and open flames. Keep the original container tightly sealed when not in use to prevent moisture absorption, as Nylon 12 can pick up humidity. Avoid creating dust clouds, and protect from mechanical damage, impact, or contamination. Follow all local regulations for polymer storage. |
| Срок годности | Shelf life is typically 2 years from production date when stored in original, unopened packaging under cool, dry conditions. |
Coextruded PA6/EVOH/PA12 multilayer lines for gasoline vapour return and tank venting systems use an outer sheath compound based on KEBALLOY ECO FE 200407/1 at a recycled content of 15–30 wt%. In this configuration the recycled PA12 is not specified for the inner fuel-contact layer, which remains a virgin PA12 grade to meet SAE J2260 permeation and cold-impact requirements. The five-layer coextrusion line is equipped with barrier screws of 30:1 L/D, a melt pump after the outer-layer extruder, and vacuum sizing; the outer-layer melt temperature is held at 230–250 °C, while the gear pump discharge pressure is maintained within ±0.3 MPa to avoid barrier-layer thickness oscillation. Pre-drying at 80 °C for 4–6 h to a residual moisture of ≤0.10 % is mandatory, because residual moisture above that level produces surface splay and reduces adhesion at the PA12–tie layer interface. The outer layer resin lot is screened through a 60/80/100 mesh screen pack, and melt filtration pressure is logged; a pressure rise above 0.8 MPa/h indicates contaminant accumulation from the recycled fraction. Terminal parts include 6–10 mm OD vapour return lines, tank vent lines, and connector spigot sections. Batch-to-batch variation is controlled by measuring melt volume-flow rate at 235 °C / 2.16 kg according to ISO 1133-1:2022; if the MVR deviates by more than ±12 % from the qualified reference lot, the outer-layer calendar is adjusted by 2–3 °C or the screw speed is trimmed. Cold impact resistance is validated on finished tubing at -40 °C according to SAE J2260, with no fracture allowed after impact; recycled outer-layer compounds normally retain this property at the stated addition ratio if the recycled feedstock contains less than 0.2 % residual glycerol or silicone-based processing aids. Dimensional validation follows DIN 73379-1 wall thickness and concentricity clauses; finished tube ovality is held below 0.05 mm for diameters up to 8 mm.
What Limits Short-Term Burst Strength Retention in PA12 Truck Air Brake Tubing?
The layer sequence in an extruded PA12 truck air brake tube is a single-wall construction, so the recycled-content compound is the entire pressure boundary. This makes burst-strength retention after thermal ageing the limiting property rather than permeation or dimensional stability. Under SAE J844 Type B qualification, the tube must withstand a proof pressure of 3.0 MPa at ambient temperature and an impulse cycle at 100 °C without fracture. The compound is processed on a single-screw extruder with grooved feed section and a compression ratio of 2.5:1, melt temperature 225–245 °C, and a die head pressure of 15–20 MPa. Vacuum calibration is set to a negative pressure of -0.08 bar to fix OD before a two-stage water bath at 70 °C then 40 °C. The formulation embeds 2.0 wt% carbon black masterbatch and 0.5 wt% of a copper/nitrile stabiliser system; the recycled content in the final tube is limited to 25–40 wt%, because gel-particle formation above this band increases the failure rate in bend tests at 3 × OD. Outer diameters are typically 6, 8, 10, and 12 mm, with wall thickness tolerances of ±0.08 mm controlled by laser diameter gauges and ultrasonic wall monitors. Hoop stress is calculated from ISO 1167-1:2006 hydrostatic tests at 23 °C and 80 °C; the recycled-containing tube must maintain a lower confidence limit of ≥ 90 % of virgin PA12 baseline burst pressure. At addition ratios near the upper limit, the melt filter screen pack is replaced every 4–6 h on continuous production lines because volatiles and contaminant gels from the recycled stream raise head pressure. Connector retention force after thermal cycling is checked to DIN 74324-1 for nylon compressed-air tubing, and UV stabilisation is verified after 1000 h xenon-arc exposure per ISO 4892-2 with tensile strength retention of ≥ 80 %. The equilibrium moisture uptake of PA12 at 50 % RH is 1.5 % per ISO 62, so dimensional growth in service is lower than PA6; however, mixed post-industrial waste containing PA6 or PA66 shifts the crystallisation temperature and should be limited to ≤3 wt% by FTIR or DSC analysis. Terminal products are pneumatic brake line sets, trailer air suspension supply lines, and gearbox actuator air supply tubes.
Rapid Gas Decompression Thresholds in Flexible Riser Pressure Sheaths
Flexible riser pressure sheaths extruded from PA12 are qualified under API Spec 17J for dynamic service, where the polymer layer acts as the primary hydrocarbon barrier. The recycled-content grade is not usually introduced into the primary pressure sheath of sweet or sour gas risers; instead it is assigned to the outer anti-wear layer or sacrificial sheath where the addition ratio is held at 10–20 wt% of total polymer mass. The restriction exists because rapid gas decompression damage is a function of crystallinity distribution, interfacial contamination, and elongation at break after saturation with methane and carbon dioxide. In laboratory screening, exposure to 100 bar methane at 80 °C for 24 h followed by depressurisation over 15 min showed that recycled PA12 specimens with addition ratios above 20 wt% developed void populations that could not be tolerated in a primary barrier layer; published data for this specific recycled configuration is limited, but the observed void density trend is consistent with contaminant particle initiation. The extrusion process for large-diameter pressure sheaths uses a grooved-feed single-screw extruder with 33:1 L/D, a melt pump, and a multilayer crosshead; melt temperature is held at 235–255 °C, and output is typically 200–350 kg/h. Melt pressure before the crosshead is maintained within ±0.5 MPa because wall thickness of 5–12 mm must not vary by more than ±0.3 mm. Cooling is staged using air mist and water spray to control the spherulite size gradient from the inner wall to the outer wall; a cooling rate that is too high produces a frozen-in amorphous layer with lower rapid gas decompression resistance. The recycled fraction increases melt viscosity variability, and screen pack changes are intensified; accumulated gels appear as shark-skin surface defects at high output or as local die-lip deposits that mark the sheath. Differential scanning calorimetry at 10 K/min is used to control lot quality; the melting peak should be 175–180 °C, and a broadening of the crystallisation exotherm beyond 8 °C indicates mixed molecular weight fractions that increase the risk of localised void nucleation. Outer-layer qualification therefore includes the API Spec 17J bending stiffness test, sour-gas ageing according to NORSOK M-710 when applicable, and an outer-sheath wear test in synthetic seawater with sand loading. End products include the outer sheath of unbonded flexible risers, bend restrictor collars, and non-sour flowline protection layers.
For paper machine wet-end fabrics, the recycled PA12 compound is introduced into monofilament spinning as a blend with virgin high-viscosity PA12 at a recycled content of 20–40 wt% and a lubricant masterbatch addition of 0.8–1.2 wt%. The strand is extruded through a 38-hole spinneret on an extruder with L/D 32:1, melt temperature 240–260 °C, water quench at 40–60 °C, and a two-stage hot-air drawing system with total draw ratio 3.5–4.0:1. Under ISO 2062 tensile testing, the drawn monofilament must retain a tenacity of ≥ 0.35 N/tex and elongation at break of 25–35 %; recycled content above the upper bound reduces the melt strength and causes fibre breaks at the first godet due to contaminant particle-induced stress concentration. Moisture is controlled to ≤0.08 % before extrusion because water in the melt hydrolyses the polyamide at the higher end of the melt-temperature window. The quench bath is fitted with turbidity monitoring; an increase above 5 NTU indicates oligomer or contaminant leaching from the recycled fraction. The finished monofilament is annealed at 120 °C for 2 h under nitrogen to set crystallinity and reduce free shrinkage. The material is not proposed for food-contact paper-machine clothing because recycled polyamide is not authorised under EU 10/2011 for direct food contact. End products are spiral-link belt transverse yarns, dewatering screen warp yarns in paper machines, and industrial brush bristles for chemical-resistant sweeping applications.
When a recycled PA12 compound is substituted into automotive quick-connector bodies, the processing window contracts because the thin-walled latch geometry freezes rapidly in the hot runner and can produce short shots if the viscosity of the recycled fraction exceeds virgin lot limits. The connector body is moulded from a blend containing 20–35 wt% KEBALLOY ECO FE 200407/1 with virgin PA12; the locking claws and sealing lips, however, are moulded from a virgin PA12 or PA612 grade to preserve snap-fit retention after exposure to fuel E10 at 60 °C for 1000 h. Injection moulding is performed on a hydraulic machine with clamp force of 80–150 t, barrel profile 230–260 °C, mould temperature 40–80 °C, and holding pressure of 60–80 MPa. The granulate is pre-dried to ≤0.10 % moisture using a desiccant dryer at 80 °C for 4–6 h; the hopper inlet is blanketed with dry air at a dew point of -30 °C to prevent moisture regain. Dimensional stability is checked against ISO 294-4 shrinkage values and extraction force tests per DIN 73379-1; the recycled-containing connector must maintain a minimum extraction force of 450 N after thermal cycling between -40 °C and 100 °C. The hot-runner manifold is held at 240–260 °C, and the gate freeze time is extended by 0.2–0.5 s relative to virgin PA12 because the recycled fraction lowers the solidification plateau. The supplier-specific PPAP package includes melt volume-flow rate according to ISO 1133-1:2022 at 235 °C / 2.16 kg, colour consistency after 500 h xenon-arc exposure per ISO 4892-2, and odour testing under VDA 270. Terminal parts include fuel-line quick connectors, vapour return connectors, and tank vent valve brackets.
| Validation item | Standard or method | Condition | Acceptance indicator |
|---|---|---|---|
| Melt volume-flow rate | ISO 1133-1:2022 | 235 °C, 2.16 kg | reference lot ±12 % |
| Extraction force | DIN 73379-1 | thermal cycling -40 °C to 100 °C | ≥450 N |
| Mould shrinkage | ISO 294-4 | mould temperature 40–80 °C | reference lot ±0.2 % |
| UV ageing | ISO 4892-2 | 500 h xenon-arc | tensile strength retention ≥80 % |
| Odour | VDA 270 | condensation at 80 °C | ≤ grade 3 |
When Recycled PA12 Is Used in Battery Coolant Lines with Water-Glycol Mixtures
The replacement of virgin PA12 in battery cooling circuits is constrained by hydrolysis resistance in water-glycol at elevated temperature, not by chemical compatibility with the cooling fluid alone. The grade is processed at a recycled content of 20–35 wt% with virgin PA12 to maintain burst strength of ≥ 0.7 MPa at 90 °C after 3000 h coolant ageing; higher recycled additions reduce weld-line strength in corrugation valleys. The line is extruded on a single-screw extruder with L/D 30:1 and a vented barrel, melt temperature 235–250 °C, through a double-wall corrugator with vacuum slots for convoluted sections. Wall thickness is held at 1.0–1.5 mm with an ultrasonic thickness gauge tolerance of ±0.07 mm. Pre-drying at 80 °C for 4–6 h to ≤0.10 % moisture is mandatory. The downstream forming line includes a hot-air preheating zone at 160 °C before the corrugator, which reduces residual stress at the inner radius. Hydrostatic pressure resistance is evaluated according to ISO 1167-1/2 at 23 °C and 90 °C; the recycled-containing tube must meet a lower confidence limit of ≥ 90 % of the virgin PA12 baseline. Resistance to water-glycol is assessed through OEM coolant immersion protocols at 90 °C with 50 % ethylene glycol, and cold-shock testing is performed at -40 °C to confirm that the recycled fraction does not embrittle the convoluted sections. The grade is not indicated for potable water or building heating circuits because potable-water approvals do not cover recycled polyamide without additional barrier layers. Terminal products are battery cooling lines, drive-motor cooling loops, and power electronics coolant return lines. REACH SVHC screening and RoHS Directive 2011/65/EU restrictions apply, with records retained for EU 2000/53/EC recyclability declarations where the part is incorporated into a vehicle assembly.
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- Barlog Plastics KEBALLOY ECO FE 200407/1 Nylon 12, with recycled content Производится в соответствии с системой качества ISO 9001 и отвечает соответствующим нормативным требованиям.
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Barlog Plastics KEBALLOY ECO FE 200407/1 Nylon 12, with recycled content is a polyamide 12 compound containing a recycled feedstock fraction. The suffix 200407/1 is a manufacturer-specific formulation identifier and does not correspond to an ISO 1043 short designation or an ISO 11469 marking code. Procurement documentation should therefore reference the complete grade designation rather than a generic “PA12 ECO” description. In the absence of a reinforcement code, the product is understood as an unreinforced compound unless the manufacturer’s technical datasheet lists glass-fiber or mineral content. The ECO identifier separates the grade from virgin KEBALLOY PA12 formulations and signals recycled content, but the exact recycled mass fraction, feedstock origin—post-industrial or post-consumer—and allocation method must be verified by lot certificate. A supplier claim of recycled content should reference ISO 14021 or a recognized mass-balance standard; the phrase “with recycled content” alone does not provide sufficient technical definition.
Polyamide 12 is polymerized from laurolactam or 12-aminododecanoic acid. Differential scanning calorimetry under ISO 11357-3 typically places the melt peak between 172 °C and 180 °C for unfilled virgin PA12. The recycled fraction in KEBALLOY ECO FE 200407/1 may shift this peak by a few degrees if the feedstock contains oxidized or blended PA12. The amide-group density is lower than in PA6 and PA66, and water absorption at saturation after immersion at 23 °C per ISO 62 is approximately 1.4% to 1.6% for unfilled PA12. This low equilibrium moisture uptake produces less dimensional change and less tensile-modulus reduction between dry-as-molded and conditioned states than is observed in PA6 or PA66. For the recycled-content grade, residual low-molecular-weight species can also influence moisture uptake and should be characterized on molded plaques before final application approval.
| Property | Test standard | Unfilled PA12 reference range | Unfilled PA6 reference range | Unfilled PA66 reference range |
|---|---|---|---|---|
| Density | ISO 1183 | 1.01 g/cm³ | 1.13 g/cm³ | 1.14 g/cm³ |
| Tensile modulus, dry-as-molded | ISO 527-1/-2 | 1400–1600 MPa | 3000–3400 MPa | 3100–3500 MPa |
| Tensile stress at yield | ISO 527-1/-2 | 40–50 MPa | 75–85 MPa | 80–90 MPa |
| Charpy notched impact, 23 °C | ISO 179-1/1eA | 4–6 kJ/m² | 4–7 kJ/m² | 4–6 kJ/m² |
| Water absorption at saturation, 23 °C | ISO 62 | 1.4–1.6% | 9.0–10.0% | 7.5–9.0% |
| Heat deflection temperature, 1.8 MPa | ISO 75-1/-2 | 45–55 °C | 60–70 °C | 70–80 °C |
| Vicat softening temperature, B50 | ISO 306 | 165–175 °C | 195–205 °C | 225–235 °C |
The table provides baseline literature ranges for dry-as-molded unfilled resins used in comparative material screening. It does not replace lot-specific KEBALLOY ECO FE 200407/1 certificate values; published data for this specific configuration is limited to the manufacturer’s technical datasheet.
How Should Processors Set Drying and Melt-Temperature Boundaries?
Pre-drying is mandatory when ambient relative humidity exceeds 60% or when regrind has been stored outside sealed containers. The recommended reference condition for initial trials is 80 °C for 4 h to 6 h in a desiccant dryer with a dew point of -30 °C or lower. Residual moisture should be confirmed by Karl Fischer analysis according to ISO 15512; the general target for unreinforced PA12 is 0.10% by mass or less. Moisture levels above 0.15% can hydrolyze the melt during injection molding, reducing molecular weight and producing splay or gas marks on molded parts. Drying should be completed before feeding, not in the hopper by hot air only, because recycled PA12 feedstock may contain particles with higher moisture uptake than virgin pellets.
The melt temperature at the nozzle should be held within 220 °C to 250 °C. Barrel profiles on a general-purpose screw with an L/D of 20:1 to 22:1 and compression ratio 2.5:1 to 3.0:1 can be set in a rising profile from feed throat to nozzle, but the final melt temperature is the controlling parameter. Mold temperature for unfilled PA12 is usually maintained between 40 °C and 80 °C; the higher end improves crystallinity and dimensional stability, while the lower end shortens cycle time but may reduce impact resistance. Hold pressure should be set as a function of gate freeze. A cushion of 2 mm to 4 mm and a hold time sufficient to achieve gate seal are typical starting points. In production-scale machines with clamp forces between 600 kN and 2500 kN, injection speed should be medium to fast to prevent premature freeze-off in thin sections. If flow lengths exceed the standard spiral-flow limit, mold-filling simulation should be run with measured melt volume-flow rate data rather than generic PA12 values.
Batch-to-batch variability in recycled PA12 is observed mainly as melt-pressure oscillation at the die or screw recovery time shifts. If screw recovery time varies by more than ±5% at a constant shot size, the melt viscosity of the recycled fraction is not stable enough for tight-tolerance molding; pre-blending with virgin PA12 or adjusting melt temperature is required. In profile extrusion using grooved-feed extruders with L/D 30:1 to 34:1, a crammer feeder may be needed when bulk density falls below 0.55 g/cm³ per ISO 60. Inline melt filtration of 50 µm to 100 µm is recommended for surface-critical parts to remove non-melting contamination from recycled feedstock. Without filtration, nozzle tips below 0.8 mm can block when gate diameters are small.
Comparative Performance Against Virgin Nylon 12 and Short-Chain Polyamides
Compared with PA6 and PA66, unreinforced PA12 has a density close to 1.01 g/cm³ measured by ISO 1183, while PA6 and PA66 are approximately 1.13 g/cm³ and 1.14 g/cm³. Tensile modulus for dry-as-molded PA12 is typically 1400 MPa to 1600 MPa under ISO 527-1/-2; PA6 and PA66 often exceed 3000 MPa. Tensile yield stress for PA12 is approximately 40 MPa to 50 MPa, roughly half the 75 MPa to 90 MPa range of PA6 and PA66. The lower short-term stiffness means the ECO FE grade cannot directly replace short-chain polyamides in structural brackets without section rework or reinforcement. Its advantage is lower moisture-related property shift: saturation water uptake of 1.4% to 1.6% under ISO 62 is significantly below the 7.5% to 10.0% range observed for PA6 and PA66.
Relative to a virgin PA12 control, the recycled fraction in KEBALLOY ECO FE 200407/1 can widen lot-to-lot viscosity scatter and increase volatile byproducts. The melt volume-flow rate should therefore be controlled by ISO 1133-1:2022 at 235 °C and 2.16 kg load. Typical virgin unfilled general-purpose PA12 grades fall between 8 cm³/10 min and 15 cm³/10 min under those conditions, but the specified range for this grade is lot-specific and must be taken from the manufacturer’s certificate. Compared with glass-fiber reinforced PA12, the unreinforced product has lower modulus, lower creep resistance, and higher elongation; glass-filled grades can exceed 4000 MPa in tensile modulus depending on glass content and orientation. The absence of a reinforcement suffix indicates that KEBALLOY ECO FE 200407/1 should not be specified where creep or fatigue loads require reinforced PA12.
Injection-molded clips, cable glands, flexible pneumatic tubing, and housings exposed to cold impact are candidate application fields for the grade. The selection logic is driven by the PA12 base: low density, low moisture uptake, and retention of ductility below -40 °C in notched Charpy testing under ISO 179-1/1eA. However, use in fuel contact or fuel-vapor components is not automatically granted by the base PA12 chemistry. A final article intended for automotive fuel lines must pass material-level permeation and fuel-exposure requirements such as SAE J2260 or the OEM-specific standards; published data for this specific recycled configuration is limited. The recycled content may also affect weld-line strength, chemical resistance, and emission behavior, so validation must be repeated on the actual grade, not on a virgin PA12 control.
Electrical and electronic applications may require a flammability class under UL 94. The designation FE in KEBALLOY ECO FE 200407/1 is manufacturer-specific and cannot be read as an automatic flame-retardant claim. If flame retardance is required, the UL Yellow Card or equivalent certificate must be supplied for the exact grade and wall thickness. Food-contact use under FDA 21 CFR 177.1580 or EU 10/2011 is not established by the polymer type unless migration testing on the final article and recycled feedstock is completed. Medical device components such as housings or clips require ISO 10993-1 biocompatibility evaluation; recycled feedstock may introduce additional extractables and leachables that virgin PA12 does not carry.
When Recycled Content Replaces Virgin PA12 in Fluid-Contact and Low-Temperature Components
When the ECO FE grade is selected to replace a virgin PA12 in a pneumatic or liquid line, the operational boundary shifts in two ways. First, the recycled fraction may contain minor contamination that influences surface finish and stress-crack resistance. Stress-crack resistance testing under ISO 22088 or an OEM-specific test fluid is required before conversion; passing data from virgin PA12 is not transferable. Second, low-temperature impact after moisture conditioning should be verified with molded specimens because recycled feedstock molecular weight distribution influences notched impact. Typical unfilled PA12 grades retain notched Charpy values above 6 kJ/m² at -30 °C; the acceptance criterion for the recycled grade should be set from the supplier’s lot data rather than assumed from generic PA12 literature.
Conversion from a virgin PA12 compound should be managed as a raw-material substitution, not a drop-in. The processor should map melt volume-flow rate, ash content, moisture, and mold shrinkage on the first three lots because the recycled feedstock may alter crystallization rate. Mold shrinkage for unfilled PA12 is generally 0.7% to 1.2% in the flow direction and 0.8% to 1.4% transverse when measured on 60 mm × 60 mm × 2 mm plaques under ISO 294-3. If the ECO FE grade deviates from these ranges, shrinkage corrections must be made before tool steel changes are finalized. For thin-walled parts or hot-runner systems with gate diameters below 0.8 mm, screen packs or nozzle filters are required because recycled feedstock may introduce particles that virgin resin would not contain.
Lot-Level Compliance Documentation Defines the Operational Envelope
The recycled-content claim for KEBALLOY ECO FE 200407/1 is only technically meaningful when supported by batch documentation. Under ISO 14021, a self-declared environmental claim must be accurate, substantiated, and not misleading. A lot certificate should state the recycled mass fraction, the feedstock category—post-industrial or post-consumer—and, if applicable, the mass-balance certification scheme such as ISCC PLUS or REDcert². Without this documentation, downstream sustainability accounting and customer claims cannot be validated. The same documentation should include melt volume-flow rate under ISO 1133-1:2022, residual moisture under ISO 15512, and any REACH or RoHS statements applicable to the product.
Regulatory compliance is use-specific. The material may be supplied with a general REACH statement under Regulation (EC) No 1907/2006 and a RoHS statement under Directive 2011/65/EU, but these do not cover food contact, medical use, fuel contact, or potable-water approvals. If the final part is to be used in contact with drinking water, verification to NSF/ANSI 61 or DVGW W 270 is a separate exercise. If it is used in automotive fluid lines, the part must pass the OEM-specific fuel exposure and permeation program; material approval from a virgin PA12 formulation is not transferable to the recycled-content grade. Published data for this specific configuration is limited to the manufacturer’s technical datasheet, lot certificates, and application-specific release testing.
The grade should not be specified for applications requiring close property windows without a defined lot-acceptance regime. Recycled PA12 suppliers can control the recycled fraction, but incoming inspection should include melt volume-flow rate, moisture, density, and visual contamination as minimum checks. Where the part is thin-walled or uses a hot-runner system with gate diameters below 0.8 mm, filtration is required because recycled feedstock may introduce particles that virgin resin would not contain. These operational boundaries are more significant for the ECO FE designation than for standard virgin KEBALLOY PA12 formulations.
