Biofibre® Silva

Biofibre® Silva - virgin

Biofibre® Silva - recycle

The Biofibre® Silva product group contains the essence of Biofibre®. These are compounds based on a biopolyester matrix and wood fibers. The name “Silva” is based on the Latin origin for “forest” and thus symbolizes the importance of the naturalness of this product group.

Why and when to use Silva?

  • Food contact and toy industry approved (AIJU Spain)
  • Natural look & feel
  • Potent. compostable (industrial; all binder ingredients: DIN EN 13432)
  • For a variety of processing methods, e.g. injection molding, 3D printing, blow molding
  • Substitute for e.g. PS, PET
  • Application examples: Commodity products, rigid packaging, toy industry

Exemplary overview of characteristic data – adjustments/variations within the product class possible

1 Mechanical properties *1

Material propertyValueUnitTest methodComment
E-Modulus3200MPaDIN EN ISO 527-2Tensile testing (1 mm/min)
Yield Strength39MPaDIN EN ISO 527-2Tensile testing (10 mm/min)
Strain at break1,8%DIN EN ISO 527-2Tensile testing (10 mm/min)
Notched Impact Strength (Charpy)2,2kJ/m2ISO 179-1/1eAfracture

*1 mechanical testing on injection molded and standardized multipurpose test specimens (DIN EN ISO 527, Type 1A) conducted at standardized climate (23 °C, 50 % rel. humidity)

2 Thermal properties

Material propertyValueUnitTest methodComment
Melt Flow Rate (MFR)23g / 10 minDIN EN ISO 1133190 °C / 2,16 kg
Melting range165 - 195°CDSC, 10 °C / min
Heat deflection temperature (HDT)54°CDIN EN ISO 75-2B (0,45 MPa)*2

*2 at 68 g minimum load (minimum load according to DIN EN ISO 75-2: 64 g)

3 Other features

Material propertyValueUnitTest methodComment
Colornature / brownishcolorable
Density1,26g / cm3Injection molded part
Bulk density550 - 650kg / m3
Water absorption capacityMax. 2%DIN EN ISO 62Related to dry sample
Primary processing methodInjection molding

Further to: