Biograde B-F

Supplier: Biograde Limited
GENERAL INFORMATION
Product type:
Thermoplastic >> TPS (Thermoplastic Starch)
  • Labels & Ratings
  • European Standard EN13432,
  • ASTM 6400 (USA),
  • Australian Standard AS 4736,
  • Japan “GreenPla”,
  • International Standard ISO16929, ISO 14855

Product performance

Compostable and biodegradable plastic based on a blend of thermoplastic starch (TPS), aliphatic polyesters (AP) and natural plasticizers. Is based on corn starch which is a renewable material. Offers... 

  • Material Status
  • Commercial
PROPERTIES
Mechanical Properties
Value
Test Conditions
Test Method
Tensile Elongation
ASTM D-883
Tensile Strength (Tensile Stress)
ASTM D-883
Tensile Strength (Tensile Stress)
ASTM D-883
Physical Properties
Value
Test Conditions
Test Method
Melt Mass-Flow Rate (MFR or MFI = Melt Flow Index or MI = Melt Index)
ASTM D1238
Specific Gravity (Density)
ASTM D792
CONVERSION MODE & PROCESSING GUIDELINES
Conversion Mode
Extrusion >> Films (blown)
- Cold aeration
10 - 15 °C
- Nip roll
> 2.5 m
1. The resin is very sensitive to temperature during the film blowing process. Please be cautious of the temperature used during extrusion and film blowing. As a reference, the film-blowing temperatures successfully used by the manufacturer are: 90/130/130/120/105 deg.C. 2. Before blowing the raw material, you should check that the moisture level does not exceed 1%. If the moisture level is greater than 1%, the resin will need to be dried before film blowing. The drying temperature is no higher than 65 deg. C and drying time should be no longer than one hour. 3. Before blowing the film, the film blowing extruder needs to be purged and cleaned of residual polyethylene and then the Biograde B-F resin can be used as the last cleaning step, after which the temperature can be adjusted to the correct settings. 4. The screw rotation speed should be slow at first and then fast to match the haulage speed which is first slow and then fast as well. 5. The inside and outside aeration should be gradually changed from weak to strong. Cold aeration is better; 10-15 deg.C works to avoid film blocking problems. 6. The preferred blow-up ratio is 1:2.5 or 1:3. The height from die orifice to the nip roll should be higher than 2.5 m to ensure full cooling and prevent film blocking.

Products with same tradename

Biograde B-M

Biograde WS-50

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