Futerro® PLA Fiber Melt Spinning

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

Product performance

Polylactic acid. It is a thermoplastic fiber-grade resin derived from annually renewable resources. Available in pellet form, it is designed for extrusion into mechanically drawn staple fibers or... 

  • Appearance
  • Clear
  • Physical Form
  • Pellets
  • 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
Extrusion >> Fibres
Extrusion - Feed Throat
25 °C
Extrusion - Melt Pump Temperature
235 °C
Extrusion - Spin Head Temperature
235 °C
Extrusion - Zone 1 Temperature
200 °C
Extrusion - Zone 2 Temperature
220 °C
Extrusion - Zone 3 Temperature
230 °C
General-purpose screws with L/D ratios of 24:1 to 30:1 and 3:1 compression ratios are recommended. However, screws with mixing sections or shallow metering channels may overheat the melt at high screw speeds. Typical melt spinning temperatures are 220 – 240°C. Like PET, Futerro® PLA polymer requires either high filament velocity or drawing and controlled heat setting to control shrinkage.

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 of less than 0.010% (100 ppm) is recommended to prevent viscosity degradation better it is to reach 0.005% (50 ppm). Typical drying conditions for crystallized granules are 3 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 4 hours or more for a 50 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.

Products with same tradename

Futerro® PLA Injection

Futerro® PLA Extrusion

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