SAF™is a cross-linked terpolymer based on acrylic acid, which is partially neutralised to its sodium salt.The cross-links between the polymer chains result in ester groups.
The manufacturing process results in filaments of SAF™which are insoluble in water.Depending on the desired outcome, moisture may be added to the fibres at this stage to aid processing.The strands of SAF™ are then precision cut into a range of staple lengths.
- SAF™ does not melt.It begins to decompose extremely slowly at temperatures >200°C
- Its Glass Transition Temperature is not measurable
- The fibre density is approximately 1.4g/ml
SAF™ is a non-irritant, safe to handle and is FDA/EFSA listed for use as an absorbent in food packaging. It can be blended with a range of synthetic and natural fibres. Due to excellent integration during conversion into fabrics and yarns, no adhesives or thermal-bonding treatments are required to keep the fibres in place.