World production for manufactured fibres is expected to grow 5.3 per cent annually to 44 million metric tons in 2005 with advances driven by gains in synthetic fibres, a new study has claimed. The report, by Cleveland-based industrial market research firm The Freedonia Group Inc, predicts manufactured fibres will expand their market share at the expense of natural fibres, rising to 65 per cent of total fibre demand in 2005.