Biofibre® Silva

Biofibre® Silva - virgin

Biofibre® Silva - recycle

The Biofibre® Silva product group contains the essence of Biofibre®. These are biobased and biodegradable compounds based on a biopolymer matrix and natural fibres. Biofibre® Silva is available in virgin as well as recycled quality.
The name “Silva” is based on the Latin origin for “forest” and symoolizes the importance of naturalness for this product group.

Highest proportions of bio-based raw materials are combined with the property of biodegradability.
It is suitable for a wide range of product applications, especially for solid packaging, consumer articles or moulded parts with comparable mechanical property requirements:

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

Biofibre® Silva reveals itself with excellent stiffness and strength and can be used for complex mouldings with long flow paths at low wall thicknesses.
Biofibre® Silva is available in standard quality or food grade according to requirements.

Sustainable and biobased!

  • Engineering grade based on polypropylene and wood fibres
  • Suitable for production of complex articles with long flow paths at very low wall thicknesses.
  • Excellent processability, excellent surface finishing, dyeable with standard color masterbatches.
  • Typical markets are within applications were high temperature resistance, very short processing times, and low density is desired
  • Typical markets are within consumer articles, furniture industry, water-contact applications, automotive parts and rigid packaging.
  • Drop-in for e.g. PP, HDPE
  • Example: Flower pot with very thin walls

Further to: