| HS Code | 334483 |
| Material Type | Recycled post-industrial PET-G 3D printing polymer |
| Processing Technology | Fused Granulate Fabrication (FGF) |
| Polymer Family | PET-G |
| Recycled Content | Post-industrial PET-G |
| Form | Pellets |
| Density | 1.27 g/cm3 |
| Tensile Strength | 50 MPa |
| Tensile Modulus | 2.10 GPa |
| Flexural Modulus | 2.10 GPa |
| Flexural Strength | 75 MPa |
| Elongation At Break | 3 % |
| Izod Impact Strength Unnotched | 10 kJ/m2 |
| Glass Transition Temperature | 80 °C |
| Heat Deflection Temperature At 0 46 Mpa | 70 °C |
| Heat Deflection Temperature At 1 8 Mpa | 65 °C |
| Vicat Softening Point | 85 °C |
| Processing Temperature | 240-260 °C |
| Chemical Resistance | Good resistance to many acids, bases, and alcohols |
| Water Absorption | Low |
| Moisture Absorption | Approximately 0.2 % at 24 hours |
As an accredited Mitsubishi FGF Recycled PIPG Post-Industrial PET-G 3D Printing Polymer factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaged in 1 kg moisture-barrier foil bags, sealed and labeled for Mitsubishi FGF Recycled PIPG Post-Industrial PET-G 3D Printing Polymer. |
| Container Loading (20′ FCL) | 20′ FCL container securely loaded with palletized Mitsubishi FGF Recycled PIPG Post-Industrial PET-G 3D Printing Polymer for export shipment. |
| Shipping | Mitsubishi FGF Recycled PIPG Post-Industrial PET-G 3D Printing Polymer ships as a non-hazardous solid in sealed, moisture-barrier bags within cartons, drums, or pallets. Keep dry, below 30°C, away from UV/heat. Standard freight, air, or sea; no special dangerous-goods labeling required unless local rules specify. |
| Storage | Store in a cool, dry, well-ventilated area away from direct sunlight, heat, flames, and ignition sources. Keep sealed in original packaging or an airtight container to prevent moisture absorption, dust, and contamination. Use desiccant if humidity is high. Maintain ambient temperature and avoid prolonged UV exposure. Protect from physical damage. Keep separate from incompatible chemicals. Follow supplier SDS and local regulations. |
| Shelf Life | For Mitsubishi FGF Recycled PIPG Post-Industrial PET-G: store sealed, cool, dry, away from moisture/UV; typical shelf life 12–24 months unopened. |
Direct pellet extrusion of Mitsubishi FGF Recycled PIPG Post-Industrial PET-G 3D Printing Polymer on large-format fused granular fabrication machines requires pre-drying in a desiccant dryer at 65 °C until residual moisture is below 0.02 wt% (200 ppm) measured by ISO 15512:2019. A single-screw pellet extruder with L/D ratio between 24:1 and 30:1, compression ratio 2.5:1 to 3.0:1, and a hardened nozzle bore of 0.8–1.2 mm is used. Barrel setpoints are typically 220/240/250 °C with the die maintained at 245 °C. Extrusion multiplier is held at 1.00–1.05 with retraction of 0.8–1.2 mm at 15–25 mm/s. Deposited layer height between 0.4 mm and 0.6 mm at nozzle linear speeds up to 60 mm/s produces vacuum forming tool surfaces that can be machined to flatness. The recycled feedstock lot should be checked for melt flow rate according to ISO 1133-1:2022 at 260 °C/2.16 kg; values outside 6–10 g/10 min indicate lot-to-lot variation that will require barrel temperature compensation.
Terminal tooling from the recycled PIPG is used for low-temperature vacuum forming of polyolefin and polystyrene sheet. The forming load is distributed across a printed shell with 4–6 mm wall thickness and 15–25% triangular infill. Vacuum channels are drilled at 0.5–1.0 mm diameter and 20–40 mm spacing after printing. Sustained surface temperature is kept below 70 °C because unreinforced PET-G exhibits measurable creep above this range. The tool is annealed at 60 °C for 2 h before machining to relieve internal stress. Build plate temperature at 70–80 °C on a polycarbonate or PEI bed is required during printing. Chamber temperature above 55 °C improves interlayer tensile strength measured on printed specimens. Failure modes observed on production lines include corner lifting when bed temperature drops below 65 °C and stringing when retraction is below 0.8 mm.
The replacement is technically viable only when the heat deflection temperature of the specific recycled lot is first measured according to ASTM D648-18 at 0.455 MPa. Virgin PET-G copolyester typically records 70–75 °C at this stress. Recycled lots with residual contaminants or low intrinsic viscosity may fall 3–5 °C lower. That shift narrows the safe forming temperature envelope for polyolefin sheet because mold surface temperature must remain at least 10 °C below the measured HDT to avoid vacuum-hole creep and cavity deformation. The PIPG feedstock is compounded without impact modifiers in most post-industrial streams. Izod impact strength according to ASTM D256-10 should be verified above 80 J/m at 23 °C before tooling is placed under trimming fixtures.
Compliance for tooling does not require food-contact assent. Machinery safety and chemical exposure under REACH remain applicable. A printed mold used in thermoforming is not a final article for consumer sale. The use of the recycled copolyester in this application must be recorded in the workplace exposure scenario for hot-melt emissions at 240–250 °C. Extraction at the extruder head is required in enclosed production cells. Surface finish is controlled by machining after annealing. Cutting speed above 200 m/min with carbide tooling prevents melt-back. Solvent polishing is not applied because ketone-based solvents can induce environmental stress cracking in the layer-bonded surface. The terminal products are vacuum form tools for packaging trays, blister inserts, and low-volume automotive interior trim prototypes.
Large-format fused granular fabrication converts the recycled PIPG polymer into interior cladding panels, acoustic diffuser arrays, and decorative screens with perimeter wall thickness from 6 mm to 10 mm and infill densities between 15% and 25%. A 1.2-mm nozzle at 0.6-mm layer height is used for panels up to 2.4 m in length. The deposition rate is limited by extruder torque rather than kinematic gantry speed. Typical observed throughput is 3–8 kg/h depending on barrel heating capacity. Build plate adhesion on glass-fiber-reinforced phenolic or PC sheets requires bed temperature of 75 °C for the first 10 layers, then 70 °C for the remaining build. Post-print annealing at 60 °C for 2 h is applied before secondary machining.
Fire compliance under EN 13501-1 is not inherent. Unfilled PET-G is not a flame-retardant material and must be tested in the final mounted configuration. Thickness, infill, and surface coatings determine classification. Interior applications in public buildings may require a minimum Euroclass D-s2,d0 or national equivalent. The recycler must provide REACH compliance documentation for substances of very high concern. UV exposure is not recommended without a painted or laminated UV-stable cap layer because the post-industrial material may contain trace oxidation products that accelerate surface yellowing. The terminal parts are non-structural in function and must not replace load-bearing wall assemblies.
In automotive assembly plants, the recycled PIPG copolyester is direct-extruded into end-of-arm tooling, robotic gripper jaws, and conveyor-mounted part locators. The lower warpage of PET-G relative to ABS reduces post-print machining allowance. The printed tool body is designed with a solid-shell perimeter of 4 mm and a 30% rectilinear infill under gripper mounting faces. Mounting inserts are installed after annealing at 60 °C for 2 h. Threaded brass inserts with 8 mm outer diameter are pressed into undersized holes at 0.3 mm interference. Sustained clamping load is limited to 0.5 MPa contact pressure at 50 °C. Above that condition, unreinforced PET-G creeps and loses dimensional repeatability. The material is not suitable for weld-line proximity or hot-engine fixtures because continuous exposure above 70 °C leads to permanent deformation.
Automotive manufacturing jigs are not installed in the vehicle interior, so VDA 278 outgassing is not automatically required. Plant emissions protocols may require LEV certification for heated tooling. The recycled feedstock must carry an IMDS-compliant material declaration only if the printed fixture enters the production bill of materials. Dimensional inspection after printing uses CMM capability studies with R&R below 10% for locating features. Holes are drilled after printing rather than relying on as-printed bore accuracy. The terminal applications are assembly aids, inspection fixtures, and robotic pickup features that do not enter the shipped vehicle.
Returnable logistics trays, picking bins, and part-protecting dunnage made from recycled PIPG are specified where washdown cycles and high-humidity storage make PLA unsuitable. Equilibrium moisture absorption of PET-G at 23 °C and 50% RH is typically 0.2–0.4% when measured by ISO 62:2008. This is lower than most PLA grades, but the material is not hydrophobic. A desiccant dryer at 65 °C for 4 h is required before extrusion. Water contact after printing does not require re-drying unless the part is subsequently re-processed. Alkaline washdown solutions with pH above 9 produce surface haze on unreinforced PET-G after repeated cycles. Neutral detergents at pH 6–8 are preferred.
Terminal dunnage parts are printed with 2–3 mm walls and 20% cubic infill. They are used for transport of painted metal components, electronic housings, and plastic trim assemblies. Edge radii below 3 mm should be avoided in load-bearing floors because interlayer stress concentration at sharp corners reduces impact failure load. Impact testing according to ISO 179-1:2010 should be conducted at 0 °C if the dunnage is stored in unheated warehouses. Because the feedstock is post-industrial recycled, it is not automatically cleared for direct food-contact under FDA 21 CFR 177.1315 or Commission Regulation (EU) No 10/2011. A supplier no-objection letter is required if trays will contact food.
| Application boundary | Critical boundary | Test standard | Acceptance criterion |
|---|---|---|---|
| FGF tooling | Residual moisture | ISO 15512:2019 | <200 ppm |
| Vacuum forming mold | Heat deflection temperature | ASTM D648-18 | ≥70 °C at 0.455 MPa |
| Architectural panel | Fire classification | EN 13501-1 | Final mounted configuration test |
| Automotive assembly fixture | Creep limit | Internal clamp-load study | ≤0.5 MPa at 50 °C |
| Logistics dunnage | Moisture uptake | ISO 62:2008 | 0.2–0.4% |
| Retail display | Surface spread of flame | ASTM E84-23 | Class B or better per local code |
Short-term retail displays, exhibition stand elements, and point-of-sale product risers can be printed from the recycled PIPG polymer when the build is designed around rapid turnaround and reconfigurability. These parts are typically printed with a 0.8-mm nozzle, 0.4-mm layer height, and two perimeter walls. Surface finish after printing is controlled by mechanical sanding from P120 to P400, followed by a water-based primer. Solvent smoothing is not recommended because the layer-bonded surfaces develop microcracks when exposed to aggressive solvent blends. A color masterbatch loading above 2 wt% should be pre-tested because it may shift melt flow rate at 260 °C/2.16 kg by more than 15%.
Compliance for retail display is driven by local fire regulations. In the EU, EN 13501-1 classification is required for public exhibition spaces. Unfilled PET-G may require a flame-retardant coating to reach Class C or B depending on member state. In North America, local building codes may require ASTM E84-23 Class A or B for interior finish. The recycled content does not confer environmental compliance under green building schemes by itself. Documentation must include the post-industrial recycled feedstock mass balance and exclusion of hazardous substances under RoHS Directive 2011/65/EU if electrical components are integrated into the display. The terminal products are temporary display frames, risers, and trade-show components intended for reuse or mechanical recycling at end of campaign.
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Designated Mitsubishi FGF Recycled PIPG Post-Industrial PET-G 3D Printing Polymer, the product is a pelletized glycol-modified polyethylene terephthalate supplied for fused granular fabrication and large-format additive manufacturing. The feedstock is obtained from segregated post-industrial PET-G scrap rather than post-consumer bottle flake. This distinction reduces the probability of polyolefin cap contamination and polyvinyl chloride flake impurities that complicate bottle-grade rPET reprocessing. The material is typically extruded at melt temperatures between 230 °C and 260 °C, but lot-specific melt-viscosity data should be obtained from the supplier because post-industrial scrap streams can exhibit wider intrinsic-viscosity drift than virgin resin. End-use applications include jigs, assembly fixtures, thermoforming aids, and sacrificial tooling where recycled content is acceptable and the service temperature remains below 65 °C.
The primary structural difference is the cyclohexanedimethanol comonomer. PET-G remains amorphous after cooling from the melt; bottle-grade rPET, in comparison, can crystallize rapidly when processed above 120 °C. As a result, PIPG components display lower haze and less print-line embrittlement, but lower thermal dimensional stability. In large-format FGF, the amorphous nature of PET-G reduces warpage relative to semi-crystalline rPET, but layer-to-layer bonding remains sensitive to quench rate. Compared with post-consumer rPET bottle flake, post-industrial PIPG lacks the paper-label, adhesive, and mixed-polymer contamination typical of municipal bales. The trade-off is narrower property credentiality: published data for this specific recycled PIPG configuration is limited, so the typical ranges in Table 1 should be read as comparative baselines, not lot-release certificates.
These ranges place FGF Recycled PIPG near unfilled virgin PET-G values, with the lower bound for notched impact representing recycled feedstock with elevated thermal history. Unlike PLA, which typically exhibits higher tensile modulus but lower elongation at break, PET-G provides a wider plastic deformation window before fracture. Unlike ABS, PET-G has no styrene-related volatile organic compound release and lower edge-lift on heated beds, but ABS retains higher heat deflection under load.
| Property | Test method | Virgin unfilled PET-G typical window | Post-industrial recycled PIPG expected window |
|---|---|---|---|
| Density | ISO 1183-1 | 1.27 g/cm³ | 1.26–1.28 g/cm³ |
| Tensile modulus | ISO 527-2/1A/50 | 2000 MPa | 1900–2100 MPa |
| Tensile stress at yield | ISO 527-2/1A/50 | 50 MPa | 46–52 MPa |
| Nominal strain at break | ISO 527-2/1A/50 | 23% | 18–30% |
| Flexural modulus | ISO 178 | 2000 MPa | 1900–2100 MPa |
| Charpy notched impact at 23 °C | ISO 179-1/1eA | 9 kJ/m² | 7–10 kJ/m² |
| Heat deflection temperature B at 0.45 MPa | ISO 75-2/B | 70 °C | 65–74 °C |
Moisture uptake in PET-G is sufficient to cause hydrolytic chain scission at melt temperatures above 200 °C. Pellets should be dried in a desiccant dryer with dew point at or below −40 °C at 65 °C for 4 h to 6 h. Residual moisture should be confirmed below 0.03 wt% by Karl Fischer titration before extrusion. Production-scale FGF systems with single-screw extruders of L/D ≥ 24:1 and compression ratios between 2.5:1 and 3.0:1 provide adequate particle melting for pellet feed. Barrel zones are typically set from 230 °C at the feed throat to 250 °C at the metering section, with melt temperature measured at the nozzle between 240 °C and 260 °C. Residence time at melt temperature should not exceed 20 min to limit yellowing and acetaldehyde generation. Table 2 summarises starting processing windows for large-format equipment.
| Parameter | Recommended range or value | Equipment constraint |
|---|---|---|
| Drying temperature | 65 °C | Desiccant dryer dew point ≤ −40 °C |
| Drying time | 4–6 h | For initial moisture above 0.04 wt% |
| Residual moisture | <0.03 wt% | Karl Fischer titration |
| Barrel zone temperatures | 230/245/250/255 °C feed to die | PID-controlled band heaters |
| Melt temperature at nozzle | 240–260 °C | Immersion probe |
| Bed temperature first layer | 75–80 °C | PEI or polyimide film surface |
| Chamber temperature for parts >500 mm | 50–70 °C | Enclosed build volume |
| Nozzle diameter | 0.8–3.0 mm | Pellet-fed FGF |
| Screw L/D | ≥24:1 | Compression ratio 2.5:1–3.0:1 |
| Layer height | 0.2–0.8 mm | Dependent on nozzle diameter |
Inline melt-pressure feedback and screw-speed trimming are advised for post-industrial recycled feedstocks. On production-scale machines, batch-to-batch melt flow differences can shift extrusion pressure by 5% to 15%; a melt pump or constant-pressure control loop damps these variations. Nozzle diameters below 0.8 mm are not recommended for pellet-fed FGF because pellet-fed screw pulsation can produce flow instabilities. Two-stage vented screws operating at vacuum levels below 50 mbar absolute can extract residual volatiles, but vacuum venting is not a substitute for pre-drying when moisture exceeds 0.04 wt%.
Tensile property retention in post-industrial PET-G depends on feedstock thermal history and the proportion of recycled regrind. Because the feedstock is industrial scrap rather than post-consumer flake, the molecular weight distribution remains closer to virgin PET-G, but repeated extrusion can still reduce intrinsic viscosity and notched impact. The property window in Table 1 indicates that tensile strength is generally retained within 46–52 MPa, while elongation at break shows the greatest sensitivity to regrind thermal history. For load-bearing FGF parts, tensile testing per ISO 527-2/1A/50 should be performed on specimens machined from three orthogonal build orientations. Interlayer adhesion typically governs z-direction tensile strength, with values commonly 40–70% of xy-plane strength depending on chamber temperature and layer time. This anisotropy is not unique to recycled PET-G but should be accounted for in fixture design.
Fracture surfaces from z-direction samples often reveal interlayer cold lap where inadequate chamber temperature or prolonged layer time prevented polymer chain interdiffusion. Increasing nozzle temperature within the 240–260 °C window improves z-strength up to a plateau, but exceeding 270 °C for extended residence produces thermal degradation, visible as brown specking and reduced notched impact. Recycled lot variation may require lowering print speed rather than raising temperature when z-strength falls below design margin. Performance shall be verified with ISO 179-1/1eA notched impact specimens conditioned at 23 °C and 50% RH.
Builds with a long dimension above 1000 mm experience layer times long enough that the deposited bead can cool below the glass transition temperature of 75 °C before the subsequent pass. Enclosed chamber temperatures of 50–70 °C are therefore required to maintain interlayer diffusion and reduce edge lift. For open-frame FGF machines without enclosure, the practical printing envelope for this material is limited to smaller parts or higher bed temperatures. Heated build plates should be set to 75–80 °C for the first layer and maintained at 70–75 °C for subsequent layers on PEI or polyimide film. A sacrificial brim or raft reduces corner peel in parts with flat bases. PET-G shrinkage during cooling is approximately 0.2–0.6% in the build plane, which is lower than typical ABS values but higher than unfilled PLA.
Chemical exposure limits include ketones, chlorinated solvents, aromatic hydrocarbons, and strong alkalis; these agents can cause stress cracking in PET-G. Continuous load service above 60 °C is not recommended because creep deformation rises sharply near the heat deflection temperature. The material is not automatically compliant with food-contact regulations; FDA 21 CFR status must be confirmed through the supplier for each recycled lot. REACH and RoHS compliance are generally expected for EU applications, but lot-specific statements are required. End users should validate printed-part performance with their own build parameters because published data for this specific recycled PIPG configuration is limited.
