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Structure

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.

Manufacturing

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.

Physical properties

  • 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.