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 property | Value | Unit | Test method | Comment |
|---|---|---|---|---|
| E-Modulus | 3200 | MPa | DIN EN ISO 527-2 | Tensile testing (1 mm/min) |
| Yield Strength | 39 | MPa | DIN EN ISO 527-2 | Tensile testing (10 mm/min) |
| Strain at break | 1,8 | % | DIN EN ISO 527-2 | Tensile testing (10 mm/min) |
| Notched Impact Strength (Charpy) | 2,2 | kJ/m2 | ISO 179-1/1eA | fracture |
*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 property | Value | Unit | Test method | Comment |
|---|---|---|---|---|
| Melt Flow Rate (MFR) | 23 | g / 10 min | DIN EN ISO 1133 | 190 °C / 2,16 kg |
| Melting range | 165 - 195 | °C | – | DSC, 10 °C / min |
| Heat deflection temperature (HDT) | 54 | °C | DIN EN ISO 75-2 | B (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 property | Value | Unit | Test method | Comment |
|---|---|---|---|---|
| Color | nature / brownish | – | colorable | |
| Density | 1,26 | g / cm3 | – | Injection molded part |
| Bulk density | 550 - 650 | kg / m3 | – | – |
| Water absorption capacity | Max. 2 | % | DIN EN ISO 62 | Related to dry sample |
| Primary processing method | Injection 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: