| HS Code | 695979 |
| Productname | EcoVid 43TFH High Heat General Purpose Wood Filled Polylactic Acid |
| Brand | 3DXTECH |
| Material | Wood Filled Polylactic Acid |
| Filler | Wood Fiber |
| Color | Wood |
| Printnozzletemperaturecelsius | 190-230 |
| Printbedtemperaturecelsius | 0-60 |
| Biobasedcontent | Yes |
| Compostability | Industrial compostable |
| Storage | Cool and dry place |
As an accredited EcoVid 43TFH High Heat General Purpose Wood Filled Polylactic Acid factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | EcoVid 43TFH is supplied as 1 kg spools, vacuum-sealed in moisture-barrier bags with desiccant, then packaged in cardboard boxes. |
| Container Loading (20′ FCL) | EcoVid 43TFH High Heat General Purpose Wood Filled Polylactic Acid, loaded in a 20′ FCL container for secure ocean freight. |
| Shipping | EcoVid 43TFH High Heat General Purpose Wood Filled Polylactic Acid is a non-hazardous, wood-filled PLA material. It is not regulated for transport and requires no UN number, hazard class, or packing group. Ship in sealed, dry packaging at ambient temperature, avoiding moisture, direct sunlight, and excessive heat. Standard freight handling applies. |
| Storage | Store EcoVid 43TFH in a cool, dry, well-ventilated area, preferably 15–25°C and below 50% relative humidity. Keep sealed in original packaging with desiccant, away from direct sunlight, heat, flames, moisture, and strong oxidizers. Protect from dust and physical damage. Reseal containers promptly after use to prevent moisture absorption, which can degrade print quality. Maintain inventory rotation; avoid prolonged humid storage. |
| Shelf Life | Shelf life is typically 12 months when stored unopened in a cool, dry place, sealed against moisture and direct sunlight. |
Passenger vehicle interior trim programmes evaluate EcoVid 43TFH High Heat General Purpose Wood Filled Polylactic Acid for decorative parts where cabin soak temperatures after solar loading can reach 85–95°C and dimensional change must remain below 0.3% after 24 h at 80°C. Compliance for series production is tied to FMVSS 302 horizontal burn rate with a maximum 102 mm/min, REACH Regulation (EC) No 1907/2006 Annex XVII and SVHC screening, and RoHS Directive 2011/65/EU Annex II. Mechanical verification uses ISO 178:2019 flexural modulus and ISO 75-2:2013 Method A at 1.80 MPa, with typical HDT values for comparable wood-filled PLA compounds reported in the 80–110°C range after mold-temperature-induced crystallisation. The addition ratio on the manufacturing floor is 100 parts by weight of the supplied compound; processors do not add raw wood filler because gravimetric side-feeding of loose fibre into the molding machine throat causes screw surging and charring. Regrind from sprues and runners is restricted to 15 wt%, and for thin-wall parts below 2.0 mm a let-down of 10 wt% high-flow unfilled PLA raises melt flow without reducing the visual wood structure. Processing uses a general-purpose screw with 20:1 to 24:1 L/D and compression ratio 2.0:1 to 2.5:1, barrel profile 175–205°C, mold temperature 90–100°C, back pressure 0.5–1.0 MPa, and holding pressure 60–80 MPa; clamp force is calculated at 3–5 kN/cm² projected area. Amine-containing mould release agents and amide waxes should not be used because residual amine groups catalyse polylactic acid chain scission at melt temperatures above 200°C. Post-molding annealing at 80°C for 30 min raises crystallinity and stabilises dimensions, but cycle-to-cycle moisture content must remain below 0.025% to avoid hydrolytic chain scission at the barrel residence time of 6–8 min. Production-scale failure modes include edge tearing on textured grain surfaces when mold temperature drops below 85°C and gate blush when injection velocity exceeds 80 mm/s. Terminal product types include door trim inserts, centre console side garnishes and seat back panel trim.
In filament extrusion of EcoVid 43TFH High Heat General Purpose Wood Filled Polylactic Acid, ovality control is governed by melt temperature stability and die land length consistency before the calibration tank. The compound is processed at 100 wt% from pre-dried pellets, with in-line regrind of spooled filament edge waste held between 10 wt% and 20 wt% to avoid introducing partially hydrolysed polymer from open storage. Compliance for filament sold into European maker and prototyping channels includes REACH Regulation (EC) No 1907/2006, RoHS Directive 2011/65/EU Annex II, and when printed objects are intended for children, EN 71-3:2019+A1:2021 migration limits for arsenic, cadmium, chromium, lead, mercury, selenium and barium. Drying must reduce pellet moisture to below 0.02% at 80°C for 4 h; if pellets are stored at relative humidity above 60%, drying time is extended to 6 h at 80°C because surface moisture desorption is slower in wood-filled PLA than in neat PLA. Moisture above that level causes die swell and diameter variability above ±0.05 mm in 1.75 mm filament. Extrusion is conducted on a single-screw line with 24:1 to 30:1 L/D, temperature profile 170–185°C at feed, 185–195°C at metering, and 190–195°C at the die; the melt temperature window of ±5°C must be enforced because wood fibre pseudoplasticity increases viscosity variation at low shear rates and promotes plugging at high shear rates. A gear pump followed by a 2.80–3.00 mm die and 1.6–2.2 draw ratio yields diameter of 1.75±0.03 mm, verified by dual-axis laser micrometers at 0.001 mm resolution; water bath temperature is maintained at 50–55°C to prevent vacuum void formation and internal porosity. Spooling tension between 1.5 N and 2.5 N prevents cold stretching that would create brittle sections at print speeds above 60 mm/s. Terminal product types are 1.75 mm and 2.85 mm fused deposition modeling filament used for architectural models, assembly jigs and cosmetic display mock-ups.
Furniture edge banding and cabinet trim extrusion lines are typically fed directly from pre-dried pellets of EcoVid 43TFH High Heat General Purpose Wood Filled Polylactic Acid at 100 parts by weight; for coextruded edges requiring a clear high-gloss protective layer, a 20 wt% unfilled high-heat PLA skin is fed from a secondary extruder while the core remains 80 wt% wood-filled compound. Industry compliance relies on EN 15534-1:2014+A1:2017 for wood-plastic composite characterisation, REACH Regulation (EC) No 1907/2006, RoHS Directive 2011/65/EU Annex II, and the formaldehyde-free nature of polylactic acid fillers relative to formaldehyde-based binder systems. The production process uses a counter-rotating twin-screw extruder with 32:1 to 44:1 L/D, screw speed 25–40 rpm, barrel temperature 150–185°C, and die temperature 170–185°C; vacuum calibration at −0.08 to −0.09 MPa in a 60°C water tank locks profile width and thickness. Wood fibre orientation at the die land must be stabilised by land length to gap ratios between 10:1 and 15:1, otherwise edge banding tapes below 1.0 mm thickness develop wavy edges. Terminal product types include edge banding tapes from 0.4 mm to 2.0 mm thickness, T-mouldings and cabinet skirting profiles.
When ABS is replaced in audio and small appliance housings, the first constraints are impact performance at boss locations and flammability classification under UL 94 HB, with enclosure safety substantiation under IEC 62368-1:2023 and environmental compliance under RoHS Directive 2011/65/EU Annex II and WEEE Directive 2012/19/EU. The addition ratio at the molding plant is 100 wt% EcoVid 43TFH High Heat General Purpose Wood Filled Polylactic Acid with post-industrial regrind limited to 20 wt%. Comparable wood-filled PLA systems report notched impact values in the 2–4 kJ/m² range before modification; where thin bosses exhibit cracking after screw driving, processors add 10–15 wt% of an impact-modified PLA grade to raise the value toward 4–6 kJ/m². Processing uses a hydraulic injection molding machine with clamp force 120–180 metric tons, screw L/D 20:1, barrel profile 195–215°C, mold temperature 85–95°C, injection speed 30–60 mm/s, packing pressure 50 MPa, and cooling time 20–30 s for 2.0 mm nominal wall thickness. Amine-based antistatic additives are avoided due to premature chain scission during melt processing. Hot-runner systems require open nozzles with 6–8 mm diameter to prevent wood fibre bridging at gate geometries below 1.5 mm; valve gates with sharp corners create dead spots where wood filler accumulates and generates black specks after residence times above 10 min. Terminal product types are speaker baffles, docking station covers, and small monitor rear enclosures.
For appliance control knobs and front fascias with local surface temperatures not exceeding 85°C under IEC 60335-1:2020 clause 11, EcoVid 43TFH High Heat General Purpose Wood Filled Polylactic Acid is processed at 100 wt% with runner regrind at 10 wt% maximum and a 2 wt% external lubricant masterbatch for textured tool surfaces with grain depth above 30 µm. Fire safety substantiation uses UL 94 HB and IEC 60335-1:2020 clause 30; migration and hazardous substance control follows REACH Regulation (EC) No 1907/2006 and RoHS Directive 2011/65/EU Annex II. The production process is injection molding with clamp force 80–120 metric tons, barrel temperature 185–210°C, mold temperature 80–90°C, draft angle 1.5–2.0° on ribbed sections, and cycle time 25–35 s for 2.5 mm wall thickness. Ejection speed is reduced to 10–20 mm/s because wood-filled PLA exhibits higher static friction on polished steel cores than unfilled PLA. Terminal product types include stand mixer front fascias, rice cooker knob covers and coffee machine side panels.
Retail display components moulded from EcoVid 43TFH High Heat General Purpose Wood Filled Polylactic Acid are used where downward halogen or high-intensity LED lighting produces surface temperatures below 85°C and where visual wood fibre distribution replaces paint or laminate films. Compliance follows UL 94 HB, REACH Regulation (EC) No 1907/2006, RoHS Directive 2011/65/EU Annex II, and colour fastness is checked under ISO 105-B02:2014 for artificial light exposure; published data for this specific grade under long-term UV is limited, so outdoor or window-adjacent placement beyond 6 months requires a 2 wt% HALS/UV absorber masterbatch evaluated on production-scale signage trials. The addition ratio is 100 wt% compound with 5–15 wt% post-industrial regrind from display manufacturing. Production uses sheet extrusion on a single-screw extruder with 30:1 L/D at 175–200°C followed by thermoforming at 90–110°C; for injection-molded shelving clips, the identical melt range is used with mold temperature 80–90°C and clamp force 100–150 metric tons. Terminal product types include shelf-edge strips, display risers, and point-of-sale sign holders.
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EcoVid 43TFH High Heat General Purpose Wood Filled Polylactic Acid is a pelletized compounded thermoplastic based on semicrystalline polylactic acid, a cellulosic wood flour fraction near 43 wt%, and a high-temperature nucleation/chain-extension package. The grade is supplied as cylindrical pellets with a nominal diameter of 3.0 mm, length of 3.2 mm, and settled bulk density of 0.72 g/cm³ measured under ISO 60. Renewable carbon content is reported above 92 % by ASTM D6866-21. The material is intended for injection moulding, compression moulding, sheet extrusion, and profile extrusion where the melt temperature is held at or below 210 °C. Unlike a dry blend of wood and PLA, 43TFH is pre-compounded on a co-rotating twin-screw line with a melt filtration step, then pelletised. The designation 43TFH identifies the high-heat general-purpose configuration; standard wood-filled PLA grades in the same product family typically lack the nucleating system and exhibit lower heat deflection at 1.8 MPa.
At 23 °C and 50 % RH, the compound is specified with a density of 1.28 g/cm³ by ISO 1183-1, a melt flow rate of 7.5 g/10 min at 210 °C and 2.16 kg by ISO 1133-1:2022, and an ash content of 43 % after ignition at 600 °C by ISO 3451-1. The filler fraction raises flexural modulus to 5.6 GPa under ISO 178:2019, compared with 3.4 GPa for unfilled PLA of similar molecular weight. The trade-off is a reduction in notched Charpy impact strength to 3.8 kJ/m² under ISO 179-1:2023. Mould shrinkage is anisotropic: typical flow-direction shrinkage is 0.4 % and transverse-direction shrinkage is 0.7 % after injection into a 60 °C mould.
Compared with standard wood-filled PLA, the high-heat package in 43TFH moves the heat deflection temperature under 1.8 MPa from the 55–65 °C range to 88–96 °C when the mould is held at 90–110 °C and cooling is sufficiently slow to develop crystallinity. This difference is not obtained at cold mould temperatures; a mould at 30–50 °C leaves the PLA largely amorphous and HDT remains near 58–64 °C. Thus the grade is specified as high-heat only when thermal processing conditions are matched to the crystallisation window.
Supplier rheology data for 43TFH cover the shear-rate interval from 100 s⁻¹ to 1,000 s⁻¹ at 190 °C and 210 °C using capillary rheometry under ISO 11443:2021. The melt exhibits a power-law index near 0.65 over this range, indicating pronounced shear thinning. Melt flow rate at 210 °C with 2.16 kg load is 7.5 g/10 min under ISO 1133-1:2022. These values permit filling of wall sections down to 1.8 mm on a 900 kN clamp injection moulding machine when the injection speed is set above 120 mm/s. For thick sections above 6 mm, flow length is limited by the high filler surface area; published spiral-flow data for this specific configuration is limited.
Thermal processing boundaries are narrower than those of PP-based wood compounds because PLA is thermally and hydrolytically sensitive. Barrel zone settings from feed to nozzle are normally 165 °C, 175 °C, 190 °C, and 195 °C, with nozzle temperature not exceeding 210 °C. Residence time at melt temperature above 200 °C should not exceed 8 min. Hold-up beyond this boundary causes a drop in melt viscosity through chain scission, visible yellowing of the wood phase, and vent odour. General-purpose injection screws with 20:1 L/D, compression ratio 2.2:1, and a ring non-return valve are specified. Extended screw clearances with worn check rings reduce melt quality and increase moisture sensitivity.
Because PLA-based compounds undergo hydrolytic chain scission at melt temperatures, pellet moisture must be below 0.025 % before melt processing. As-received moisture after storage at 50 % RH is typically 0.3–0.6 %. A desiccant dryer with dew point below -40 °C, air temperature 80 °C, and residence time of 4 h is required to reach the specified limit. Verification is by Karl Fischer titration under ISO 15512:2019 or a calibrated moisture analyser with a temperature of 160 °C. In production areas above 60 % RH, moisture regain from open containers occurs within 60 min; therefore closed hoppers with dry-air purge at 0.5 m³/h are recommended. Wet pellets produce splay at the gate, reduced melt strength, and a 15–25 % loss in tensile strength when moisture exceeds 0.1 % at point of melt.
Regrind levels above 20 wt% increase moisture uptake and variability in particle size. Drying time for 20 % regrind should be extended to 6 h because reclaimed wood fibres hold moisture in surface pores. Drying temperatures above 90 °C are not recommended because pellets can soften and bridge in the hopper.
Heat deflection in 43TFH is process-dependent. If the mould surface temperature is kept at 30–50 °C, the PLA phase solidifies with limited crystallinity and the HDT at 1.8 MPa remains 58–64 °C under ISO 75-2:2013. When the tool is heated to 90–110 °C and cooling time is extended to 20–35 s, the nucleating package develops crystallinity above 30 % as measured by differential scanning calorimetry at 10 K/min under ISO 11357-3. The resulting HDT reaches 88–96 °C. This window is narrow: above 110 °C, wood particle smearing and ejection sticking appear; below 85 °C, the high-heat response is not fully expressed.
Annealing after ejection at 105 °C for 30 min raises HDT by 4–8 °C but can introduce additional shrinkage of 0.3 % and warpage in long-flow geometries. Tool temperature control should be verified with surface probes; infrared pyrometers can under-report the mould surface temperature by 8–12 °C on textured wood-filled surfaces. For tool heating, pressurised water at 110 °C or oil circulating at 120 °C is used. Silicone rubber heater mats are not sufficient for thin-wall production because heat transfer is uneven and can create localised crystallinity.
Production-scale compounding of 43TFH is performed on a 40:1 L/D co-rotating twin-screw extruder with 45 mm diameter screws, screw speed 350 rpm, and throughput 85 kg/h. Zone temperatures are set from 165 °C at the feed barrel to 195 °C in the mixing zone, with die temperature 185 °C and a vacuum vent at -0.08 MPa. The wood fraction is introduced by side feeding after the PLA melt is formed, which reduces fibre breakage and prevents premature degradation at high specific energy input. A gear pump after the extruder maintains strand die pressure fluctuation at ±2 bar. Pellet quality is controlled by moisture below 0.2 % and a pellet-to-pellet melt flow variation below ±0.5 g/10 min.
For injection moulding of the compounded pellets, a melt filter with 60/100 mesh screens is recommended to prevent nozzle clogging from agglomerated wood fines. In direct extrusion of sheet or profile, a screen changer with 80 mesh media is used before the die. When regrind is introduced above 20 wt%, melt pressure variability rises and tensile strength falls by 4–6 %; therefore regrind content should be limited to 20 % for load-bearing mouldings.
The table lists representative quality-control values at 23 °C and 50 % RH under the cited standards. The standard wood-filled PLA comparison does not contain the high-temperature nucleating package; filler loading is similar but heat deflection at 1.8 MPa is lower.
| Property | Standard | EcoVid 43TFH | Unfilled PLA | Standard wood PLA |
|---|---|---|---|---|
| Density | ISO 1183-1 | 1.28 g/cm³ | 1.24 g/cm³ | 1.26 g/cm³ |
| Melt flow rate, 210 °C/2.16 kg | ISO 1133-1:2022 | 7.5 g/10 min | 12 g/10 min | 6.5 g/10 min |
| Tensile strength | ISO 527-2 | 48 MPa | 62 MPa | 42 MPa |
| Flexural modulus | ISO 178:2019 | 5.6 GPa | 3.4 GPa | 4.8 GPa |
| Heat deflection temperature, 1.8 MPa | ISO 75-2:2013 | 94 °C | 55 °C | 60 °C |
| Notched Charpy impact strength | ISO 179-1:2023 | 3.8 kJ/m² | 5.2 kJ/m² | 4.0 kJ/m² |
Under tensile creep at 60 °C and 10 MPa load, ISO 899-1:2023 gives a creep modulus after 1,000 h of approximately 1.8 GPa for 43TFH, whereas standard wood-filled PLA falls below 1.2 GPa. Compared with a general-purpose ABS, 43TFH exhibits higher flexural modulus and renewable carbon content but lower impact strength and greater sensitivity to moisture. Drying, tool shrinkage, and purge procedures therefore differ from those used for ABS runs.
In thin-wall electrical enclosure applications, 43TFH has been injection moulded on a 1,200 kN clamp machine with a hot runner manifold at 195 °C, gate diameter 1.2 mm, and cooling time 25 s. The wood-filled compound yields a matt surface with visible fibre orientation. Post-mould painting requires flame or plasma treatment because the surface wetting tension under ISO 8296 is typically below 38 mN/m. For high-gloss coating, an adhesion promoter based on chlorinated polyolefin is required. The surface is not electroplatable without an electroless copper strike and pore sealing.
Injection parameters include melt temperature 195 °C, mould temperature 100 °C, injection speed 140 mm/s, hold pressure 60 MPa, and back pressure 4 bar. Screw back pressure above 8 bar causes excessive shear heating and darkens the wood phase. Screw recovery time should be kept below 10 s on a general-purpose screw to avoid unnecessary residence at high temperature.
For profile extrusion, a 45 mm single-screw extruder with 24:1 L/D, barrier screw, and die temperature 185 °C is recommended. Calibration tooling at 40–60 °C maintains profile tolerance within ±0.15 mm. Melt breaking strength is lower than unfilled PLA; supports and short draw-down lengths are required during start-up. Continuous service for load-bearing parts is recommended below 80 °C because creep and hydrolytic degradation accelerate above that temperature. Exposure to steam or immersion in water above 60 °C is not recommended for long-term use.
Difference from polyolefin wood composites is most evident in hardness and scratch resistance. 43TFH has a Shore D hardness near 82 under ISO 48-4, higher than many PP-based wood composites, but the material is more brittle at sub-zero temperatures. The heat deflection temperature is higher than a standard wood PLA grade, but lower than a glass-filled high-heat PLA grade. Product selection should therefore be driven by part geometry, loading condition, and post-mould coating requirements.
The compliance matrix identifies the principal regulatory and quality-control documents for the raw compound. End-use suitability for food-contact, medical, or toy applications must be confirmed with the compound supplier against the relevant positive lists.
| Domain | Standard or regulation | Method or clause | Availability |
|---|---|---|---|
| Renewable carbon | ASTM D6866-21 | Accelerator mass spectrometry | Supplier certificate |
| Restricted substances | RoHS Directive 2011/65/EU including (EU) 2015/863 | Annex II screening by XRF and wet chemistry | Supplier declaration |
| REACH | Regulation (EC) No 1907/2006 | Annex XVII entries for PAHs and heavy metals | Safety data sheet |
| Melt mass-flow rate | ISO 1133-1:2022 | Procedure A at 210 °C / 2.16 kg | Batch certificate |
| Tensile and flexural properties | ISO 527-2 and ISO 178 | Type 1A specimens, 23 °C | Batch certificate |
