A fibre with a hollow core makes news in the range now being offered to Western textile manufacturers by the Japanese Kuraray company. Known as Kuralon, the fibre is prized for its feather-lightness and recently technicians from Kuraray have revealed to customers precisely how this is achieved. Interviewed at the recent Expofil yarn fair in Paris, Hideo Hayashi, technical manager for the division responsible for the development of Kuralon, explained that Kuralon is a water soluble fibre that is coated with wool, cotton or acrylic.