Resin coated natural fibre mat

摘要

A fibre board comprises a mat 16 of fibrous material 17 coated with sugar-based bio-resin which is cured to form hard layers 18. The thickness of the resin and the fibre is adjusted and the whole is compressed by a controlled amount to give the board defined physical properties. The thickness of the layers and the compression may be adjusted to optimise sound absorbing, thermal insulation or stiffness. The thickness of the resin on one face of the fibre mat may be different to that on the other. The board may be used as the outer layer of a laminate comprising a central layer of heat or sound absorbing material such as cork, wood or paper honeycomb and the resin coating of the fibre mat may be cured at the final stage of assembly to make an adhesive bond between the core and the mats. The fibre mat may be made up of cross-lapped layers of aligned natural fibres which are consolidated by needle punching.