| HS Code | 328129 |
| Product Name | Polylactic Acid REVODE195 |
| Chemical Name | Polylactic Acid |
| Grade | REVODE195 |
| Appearance | Natural pellets |
| Density | 1.24-1.25 g/cm³ |
| Melt Flow Rate | 10-30 g/10 min (190°C/2.16 kg) |
| Melting Point | 160-170°C |
| Glass Transition Temperature | 55-60°C |
| Tensile Strength | 50-60 MPa |
| Elongation At Break | 3-5% |
| Flexural Modulus | 3000-3500 MPa |
| Notched Izod Impact Strength | 2-3 kJ/m² |
| Heat Deflection Temperature | 55-60°C |
| Biodegradability | Biodegradable |
| Compostability | Compostable |
| Processing Method | Injection molding and extrusion |
| Moisture Content | ≤0.5% |
As an accredited Polylactic Acid REVODE195 factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaging: Polylactic Acid REVODE195 supplied in 25 kg net moisture-barrier paper bags, stacked on pallets for safe industrial transport. |
| Container Loading (20′ FCL) | Polylactic Acid REVODE195 loaded in 20′ FCL containers, palletized with weather-resistant packaging, securely stowed for safe ocean transport. |
| Shipping | Polylactic Acid REVODE195 is shipped as a non-hazardous, solid thermoplastic resin, typically in sealed moisture-barrier 25 kg bags or 1000 kg jumbo bags. It is not classified as dangerous goods. Keep dry, cool, and away from heat, moisture, and direct sunlight during transport and storage. |
| Storage | Store Polylactic Acid REVODE195 in a cool, dry, well-ventilated warehouse, away from direct sunlight, heat, and moisture. Keep original packaging tightly sealed to prevent hydrolysis. Maintain temperatures below 30°C and relative humidity below 50%. Isolate from strong oxidizing agents. Use first-in, first-out rotation and observe shelf life. Ground equipment to control static. Avoid prolonged storage in humid environments. |
| Shelf Life | Polylactic Acid REVODE195 typically has a 24-month shelf life when stored unopened in a cool, dry place, away from moisture and sunlight. |
Injection moulding of thin-wall food-contact articles from Polylactic Acid REVODE195 is controlled first by hydrolysis kinetics, because the polyester backbone cleaves rapidly when free water is carried into the barrel above 0.025 wt% and melt temperature exceeds 180°C. A closed-loop desiccant dryer with a -40°C to -50°C dew-point supply is used to hold the granules at 80°C for 4 h to 6 h; residual moisture is then verified below 250 ppm by ISO 15512 before release to the feed throat. The barrel profile is set from 160°C to 180°C in the rear zone, 190°C to 210°C in the centre zone, 200°C to 215°C in the front zone, and 200°C to 210°C at the nozzle. A single-flight screw with 20:1 to 24:1 L/D and compression ratio 2.0 to 2.5 is operated with back pressure between 0.5 MPa and 1.5 MPa to limit shear heating and melt-temperature overshoot. Incoming melt volume flow rate is checked under ISO 1133-1:2022 at 190°C/2.16 kg; a shift greater than ±10% from the supplier certificate of analysis alters thin-wall fill pressure and should trigger a drying-time or lot-review correction. For hot-runner tools with 32 to 64 cavities producing clear cups and lids, manifold and drop temperatures are held at 190°C to 205°C, valve-gate needle stroke is minimised, and residence time above 230°C is kept below 3 min; excursions above 230°C or total residence beyond 5 min generate lactide, yellowing, and a measurable increase in melt flow rate corresponding to molecular weight reduction. Mould surface temperature is controlled between 20°C and 35°C for gloss in amorphous parts with nominal wall thickness 0.8 mm to 1.2 mm; settings above 45°C extend cycle time and cause distortion without sufficient crystallinity development under normal cooling-channel layouts. Vent depth is limited to 0.01 mm to 0.03 mm to avoid flash while preventing burn marks at the flow front. Injection pressure for thin-wall filling typically falls between 80 MPa and 120 MPa on clamp sizes of 250 tonnes to 400 tonnes, with pack-and-hold set at 50% to 70% of peak pressure for 0.5 s to 1.5 s. Finished food-contact articles are not compliant by resin designation alone; overall migration is tested under EN 1186-1 per EU 10/2011, and acidic or fatty simulant exposure at 40°C for 10 days is required where the package targets cold-fill condiment or dairy formats.
Disposable cutlery conversion on a 180-tonne to 250-tonne hydraulic injection moulding line with cold-runner two-plate tooling runs REVODE195 at the lower end of the melt-temperature range to reduce thermal degradation across hot sprues and multi-cavity runner systems. The melt is kept at 190°C to 200°C, injection speed is staged down for fork tine filling to avoid jetting, and cushion position is monitored continuously to prevent over-decompression and nozzle drool. Typical hydraulic injection pressure for a 48-cavity utensil tool is 70 MPa to 90 MPa; pack pressure is applied for 1 s to 3 s to control sink marks in the handle section and to dimensionally stabilise the tine length. Because amorphous PLA exhibits heat deflection temperature between 50°C and 60°C at 1.8 MPa under ISO 75-2, the cutlery is limited to cold or warm food below 60°C and is excluded from microwave, dishwasher, and oven use. Low-temperature fork-tine fracture in cold-chain service below -10°C is more brittle than unfilled polypropylene; where converters need a comparative quality gate, tensile specimens cut from the tine root are tested under ISO 527-2 and the elongation at break is expected to fall below 5% in the amorphous state.
Sheet extrusion and continuous plug-assist thermoforming of REVODE195 into drinking cups, dairy portion packs, and delicatessen trays is constrained by a narrow band between melt strength and thermal history. Roll stock is produced on a single-screw extruder with 30:1 to 36:1 L/D and a barrier screw, with barrel settings from 160°C at the feed throat to 210°C at the metering zone; melt temperature at the adapter is maintained at 190°C to 205°C, and the flat die is set to 200°C to 210°C to reduce die lines. The three-roll polishing stack is run at 30°C to 55°C with polished chrome rolls, and the sheet is wound with a polyethylene interleaf to prevent blocking at the contact surface. Before offline thermoforming, sheet stored outside barrier packaging at warehouse relative humidity above 50% is re-dried for 2 h at 60°C to 70°C, because absorbed surface moisture produces blisters, uneven plug release, and reduced top-load rigidity. The sheet surface temperature for female-cavity forming is 90°C to 110°C measured by infrared pyrometer; plug temperature is maintained 10°C to 15°C below the sheet surface to avoid stretching-induced haze at the base corner. Draw ratios above 1.5:1 in unannealed amorphous sheet increase sidewall thinning beyond 40%, which compromises barrier integrity in multilayer structures and reduces stacking strength. Trim scrap is ground and re-extruded at 10 wt% to 30 wt% regrind addition; higher regrind fractions lower melt viscosity and destabilise the plug-assist temperature window. Finished cups and trays are not hot-fill stable because the amorphous sheet begins to distort above 50°C to 55°C; hot-fill and microwave formats require a crystallizable PLA grade with lower d-isomer content and an annealing station, not post-forming temperature exposure of REVODE195.
Fused filament fabrication lines converting REVODE195 into 1.75 mm and 2.85 mm monofilament require a vacuum-dried feed with moisture below 200 ppm to prevent hydrolysis and diameter fluctuation; the dryer is typically a small hopper desiccant unit with -40°C dew point and granulate residence of 4 h at 75°C. A single-screw extruder with 24:1 to 30:1 L/D is run at 170°C to 190°C, followed by a water bath at 35°C to 55°C and a dual-axis laser micrometer; filament ovality is controlled to within ±0.05 mm, and spooling tension is maintained below 1 N to avoid cold drawing. Printing parameters for REVODE195 filament are nozzle 190°C to 210°C, bed 50°C to 60°C, and layer height 0.1 mm to 0.2 mm; adhesion to glass coated with polyvinyl alcohol or PEI film is adequate in draft-free enclosures, while unheated beds produce corner lifting when the ambient temperature differential exceeds 15°C. Because the material remains amorphous on the build plate, interlayer adhesion is lower than annealed PETG and should be checked by ISO 527-2 z-axis tensile specimens; printed objects are limited to indoor display, prototyping, or light-duty fixtures at service temperatures below 40°C. Published data for z-axis strength from this specific REVODE195 filament configuration is limited, so a print-process capability study is required before load-bearing use.
Cosmetic packaging converters using REVODE195 for transparent cream jars, lipstick caps, and compact mirrors operate with two-plate or three-plate cold-runner tools because the grade’s high-flow behaviour allows filling of long flow paths at relatively low melt temperature, but threaded closures and undercut features require ejection systems designed for low surface hardness and low elongation at break. Mould shrinkage is measured at 0.3% to 0.5% in the flow direction under ISO 294-4, and water absorption at 23°C for 24 h is below 0.5% under ISO 62, which supports consistent thread fit in closures stored in humid bathroom environments. Injection pressure is set at 70 MPa to 100 MPa for single-cavity container bodies, with mould temperature 25°C to 40°C to preserve clarity and avoid stress whitening at the gate. Weld lines opposite the gate become visible in dark-tinted compounds, and the melt front temperature at the weld line region must not fall below 190°C; if fill time exceeds 1.5 s, the moving half temperature is raised by 5°C to 10°C to improve knitting. Fragrance components and ester-based solvents in cosmetic fill formulations can induce environmental stress cracking in the threaded area; closures exposed to ethanol-containing fill are qualified by torque testing after contact, and continuous contact with ketone or glycol ether solvents is not recommended. Thread stripping torque on a 38 mm single-start neck is typically 1.5 N·m to 3.0 N·m, but this is geometry-dependent and must be verified by instrumented cap torque testing rather than inferred from resin data alone.
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Polylactic Acid REVODE195 is a melt-processable aliphatic polyester resin produced through lactide ring-opening polymerisation and supplied as unfilled, unmodified granules. The grade is intended for injection moulding, thin-wall packaging, and extrusion lines where higher melt-flow capability and optical transparency are required. It is not an impact-modified or nucleated PLA compound; therefore, toughness and heat resistance are controlled by processing history rather than elastomer or talc additions. As-delivered granules have a density near 1.25 g/cm³ when measured to ISO 1183-1, and quenched mouldings retain an amorphous, transparent morphology with a glass transition temperature between 55 °C and 62 °C when determined by ISO 11357-2. The polyester backbone is hydrolysable, and all downstream operations must treat moisture as a process variable rather than a logistics issue.
The molecular architecture of REVODE195 is dominated by poly(L-lactic acid) repeat units, with the residual D-lactide content controlled by the producer to limit crystallisation rate. In quenched parts, the polymer remains largely amorphous because the crystallisation half-time at room temperature is long; in a hot mould, spherulitic growth proceeds at rates dependent on mould temperature and shear history. This behaviour distinguishes REVODE195 from nucleated or talc-filled PLA grades, which crystallise faster and display higher haze. The grade is supplied in a form suitable for general-purpose screw recovery; no special screw metallurgy is required, but low-compression screws with shallow feed channels may require extended feed-time settings to avoid feed-blocking.
REVODE195 must be dried in closed-loop desiccant equipment with a dew-point capacity of −40 °C or lower. The target residual moisture is 250 ppm (0.025%) as measured by Karl Fischer titration to ISO 15512:2019. Drying at 80 ± 5 °C for 4–6 h is normally sufficient for virgin pellets, provided airflow is maintained at 3.8 m³/h per kg/h of pellet throughput. Hopper capacity should correspond to at least 2 h of machine consumption; insulated feed tubes and a sealed hopper throat prevent condensation on high-humidity days. In plants where ambient relative humidity exceeds 60%, pellet surface moisture can be reabsorbed within 15–20 min after the dryer outlet, so the feed throat should be fitted with a dry-air purge or nitrogen blanket at 2–5 m³/h. Online dew-point sensors should be installed at dryer inlet and outlet; an outlet dew point above −20 °C indicates inadequate desiccant bed capacity or air leakage.
Residual moisture above 400 ppm initiates hydrolysis during plastication. The reaction cleaves ester linkages, lowers molecular weight, and generates carboxylic acid end groups that accelerate further chain scission. Production records show viscosity reductions of 20–40% at constant screw speed with damp material, followed by splay, bubbles, gate delamination, and brittle parts. Because hydrolysis is autocatalytic, raising barrel temperature cannot correct the problem; damp granules must be redried. Regrind from rejected parts is hygroscopic and should be dried to the same 250 ppm target before blending. A maximum regrind fraction of 20–30 wt% is recommended for critical thin-wall articles; higher fractions reduce melt viscosity and shift colour.
The melt-processing window is bounded by flow resistance at the low-temperature end and chain-scission kinetics at the high-temperature end. On injection moulding machines with 24:1 L/D general-purpose screws, production set points are 175–195 °C in the feed zone, 190–210 °C in the compression zone, and 200–220 °C at the metering zone and nozzle. Melt temperature measured in the nozzle adapter should not exceed 230 °C. Above this limit, random chain scission, lactide reformation, and acetaldehyde generation accelerate; viscosity drift exceeding 10% has been observed after 12–15 min residence at 230 °C. The recommended back pressure is 0.5–1.0 MPa, and screw speed is 50–150 rpm for screw diameters of 25–35 mm. Profiled injection velocity is necessary for sub-0.8 mm gates, where shear heating can raise local melt temperature above 240 °C and produce brown streaks and acetaldehyde odour despite acceptable barrel settings.
For screw-compounding or masterbatch addition, a co-rotating twin-screw extruder with 40:1 L/D and atmospheric venting is used. The die-plate melt temperature is typically held at 200–215 °C. Torque above 85% indicates insufficient drying, feed bridging, or excessive filler loading. The material should not be purged with polyvinyl chloride or acetal-grade resins; incompatible residues require mechanical purging compounds or PLA regrind. Unneutralized amine-based processing aids and strongly basic fillers should be avoided because they accelerate ester hydrolysis and cause melt viscosity drift. Vent depths of 0.02–0.03 mm are critical in injection tools; insufficient venting traps acetaldehyde and leads to gas burn marks. For cold-runner tools, runner diameters below 2.5 mm can raise pressure loss beyond 60 MPa and cause short shots. Hot-runner manifolds should maintain temperature uniformity within ±5 °C, because local zones hotter than 230 °C degrade the melt even when average melt temperature is 215 °C. Clamp force requirements are approximately 3–5 kN/cm² of projected area; a 4-cavity thin-wall lid tool with 180 cm² projected area therefore operates on a 600–900 kN press.
Capillary rheometry on dried material at 200 °C shows shear-thinning behaviour; apparent viscosity decreases from approximately 800 Pa·s at 100 s⁻¹ to 150 Pa·s at 1000 s⁻¹. These values are typical for unfilled PLA and should be confirmed on the specific lot, because moisture and molecular weight distribution have a strong effect.
Because REVODE195 is a commercial resin with batch-to-batch variation, the following table consolidates typical values from dried, injection-moulded test specimens. These values should not be read as guaranteed lot specifications; the supplier certificate of analysis governs.
| Property | Test method | Typical range |
|---|---|---|
| Density | ISO 1183-1 | 1.24–1.26 g/cm³ |
| Melt mass-flow rate | ISO 1133-1:2022, 190 °C/2.16 kg | 15–30 g/10 min |
| Tensile strength at yield | ISO 527-2 type 1A | 55–65 MPa |
| Tensile modulus | ISO 527-2 | 3200–3600 MPa |
| Flexural modulus | ISO 178 | 3000–3500 MPa |
| Notched Izod impact strength | ISO 180/A | 3–5 kJ/m² |
| Heat distortion temperature, 0.45 MPa, unannealed | ISO 75/B | 50–60 °C |
| Vicat softening temperature, 50 N, 50 °C/h | ISO 306/B50 | 55–65 °C |
| Light transmittance, 2 mm plaque | ASTM D1003 | 85–90% |
| Haze, 2 mm plaque | ASTM D1003 | 5–15% |
The glass transition temperature is 55–62 °C by ISO 11357-2. Unannealed heat distortion temperature does not justify hot-fill service. If puncture impact is required for a specific article, the test should follow ISO 6603-2; published data for this exact grade and configuration is limited. Optical haze increases from below 15% for amorphous plaques to above 30% after post-mould crystallisation, so transparency and heat resistance cannot be maximised simultaneously.
REVODE195 is selected over lower-flow REVODE190 in thin-wall tools where wall thickness is 0.6–1.2 mm and flow-length-to-thickness ratios exceed 150:1. The higher melt mass-flow rate lowers injection pressure and reduces moulded-in stress in transparent lids, cups, and cosmetic packaging. Mould temperatures of 15–30 °C preserve optical clarity but produce an amorphous structure with heat distortion temperature below 60 °C under 0.45 MPa. For hot-fill or dishwasher exposure, the mould can be held at 90–110 °C to promote cold crystallisation, or the part can be post-annealed at 90–100 °C for 20–30 min. Annealing increases haze and can shrink the part by 0.5–1.0%; this must be accounted for in tool dimensions.
Differences from REVODE190 are process-visible: faster fill, lower injection and hold pressure, and slightly shorter cycle time in multi-cavity tools. Some reduction in tensile strength and impact resistance is expected because the molecular weight distribution and melt viscosity are shifted. Published data for this specific comparison is limited; processors should request lot-specific comparison plaques. Relative to filled PLA compounds, REVODE195 has lower heat distortion temperature and lower notched Izod, but superior transparent aesthetics and simpler food-contact profiles. Relative to PET, REVODE195 processes at a lower melt temperature and dries more quickly but cannot be used for high-temperature retort or hot-fill packaging without crystallisation.
Compostability assessment is usually carried out to EN 13432 and ASTM D6400; the final article, including inks and closures, must be tested as a complete package because thickness and additives can affect disintegration. Food-contact declarations may be based on Commission Regulation (EU) No 10/2011 or FDA 21 CFR depending on the market; migration testing under the intended food simulant, time, and temperature remains the converter’s responsibility. The grade is not recommended for continuous exposure to aqueous media at pH > 9 or for steam sterilisation cycles above 121 °C, because bulk hydrolysis reduces molecular weight and part strength. Unopened bags should be stored below 30 °C and 60% relative humidity to limit pre-processing moisture uptake.
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