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 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 |
Further to:
Biofibre® Sustra