Futerro® PLA Injection

Supplier: Futerro
GENERAL INFORMATION
Product type:
Thermoplastic >> PLA (Polylactide) >> Polylactide (Polylactic Acid) [PLA]

Product performance

Polylactic acid. It is derived from annually renewable resources and is specifically designed for injection molding. It is easily processed on conventional injection equipment. The material is stable... 

  • Appearance
  • Clear
  • Material Status
  • Commercial
PROPERTIES
Fill Analysis Properties
Value
Test Conditions
Test Method
Impact Properties
Value
Test Conditions
Test Method
Notched Izod Impact
ISO 180
Mechanical Properties
Value
Test Conditions
Test Method
Flexural Strength
ISO 178
Tensile Elongation
ISO 527
Tensile Modulus
ISO 527
Tensile Strength (Tensile Stress)
ISO 527
Tensile Strength (Tensile Stress)
ISO 527
Optical Properties
Value
Test Conditions
Test Method
Transmittance (Light Transmission)
ISO 14782
Physical Properties
Value
Test Conditions
Test Method
Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)
ISO 1133
Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)
ISO 1133
Specific Gravity (Density)
ISO 1183
Thermal Properties
Value
Test Conditions
Test Method
Glass Transition Temperature
ISO 11357
Peak Crystallization Temperature (DSC) (Crystalline Melt Temperature)
ISO 11357
CONVERSION MODE & PROCESSING GUIDELINES
Conversion Mode
Injection molding - thermoplastics
Injection - Adapter Temperature
200 °C
Injection - Back Pressure
3 - 7 bar
Injection - Compression Section
195 °C
Injection - Die Temperature
190 °C
Injection - Drying Temperature
90 °C
Injection - Drying Time
2 hr
Injection - Feed Temperature
150 - 165 °C
Injection - Feed Throat
20 °C
Injection - Metering Section
210 °C
Injection - Mold shrinkage
0.09 - 0.11 mm/mm
Injection - Mold Temperature
25 °C
Injection - Nozzle Temperature
210 °C
Injection - Processing (Melt) Temp
200 °C
Injection - Screw Speed
100 - 175 rpm
Injection - Suggested Max Moisture
0.025 %
Mold flow is highly dependent on melt temperature. It is recommended to balance screw speed, back pressure, and process temperature to control melt temperature. Injection speed should be medium to fast. A general purpose screw designed to minimize residence time and shear works well.

Futerro® PLA polymer is not compatible with a wide variety of commodity resins, and special purging sequences should be followed:
- 1. Clean machine and bring temperatures to steady state with low-viscosity, general-purpose polystyrene or polypropylene.
- 2. Vacuum out hopper system to avoid contamination.
- 3. Introduce PLA polymer into the machine at the operating conditions used in Step 1.
- 4. Once PLA polymer has purged, reduce barrel temperatures to desired set points.
- 5. At shutdown, purge machine with high-viscosity polystyrene or polypropylene.

Drying

In-line drying may be required. A moisture content around 0.025% (250 ppm) is recommended to prevent viscosity degradation. For injection process, it is better to reach 0.010% (100 ppm). Typical drying conditions for crystallized granules are 2 hours at 90ºC or to a dew point of -40ºC, airflow rate of greater than 1.7 m³/kg per hour of resin throughput. Drying time must be increased to 3 hours or more for a 100 ppm residual moisture target. The resin should not be exposed to atmospheric conditions after drying. Keep the package sealed until ready to use and promptly reseal any unused material. Pellets that have been exposed to the atmosphere for extended time periods will require additional drying time. Amorphous regrind must be crystallized prior to drying, to assure efficient and effective drying.
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