BANDFÖRMIGES HALBZEUG, VERFAHREN ZU DESSEN HERSTELLUNG UND VERWENDUNG.

摘要

Strip material to be used for shaping in a press is composed of unidirectional reinforcement and thermoplastic matrix fibres and uses yarns contg. the reinforcement and/or matrix fibres. The yarn density is about 5-20 yarns/cm across the material width, using 1000-3000 dtex yarns. The matrix fibres are secured at local bonding points, at least at one surface of the material, by melting on or into the fabric. Pref. the material is composed of a mixt. of yarns of reinforcement and matrix fibres, or a mixed yarn of the two fibres types, or of bicomponent fibres with a reinforcement and a matrix component. The bonding points are formed in a regular repeating pattern, or they are in a static distribution over the material surface, to form 5-50% of the material surface.