process for producing a precursor material, precursor material for the manufacture of a composite material granulate and apparatus for producing a precursor material

摘要

a process for producing a precursor material for the manufacture of a composite material granulate, said precursor material comprising a polymeric material and a fiber material, said process comprising the steps of, in this order: agitating a polymeric material and a material in fiber in a blending device comprising a blending medium by operating the blending medium at a rate sufficient to cause the temperature to rise to at least one temperature beyond the vicat softening point, or to a temperature within or beyond the temperature. melting temperature range of the polymeric material; B. maintain the speed of the mixing medium; ç. when the specific engine power required to maintain the speed of the mixing medium increases to a predetermined value or reaches a predetermined value decreases the speed to a predetermined amount; d. repeat the previous step c. until the velocity falls below a first limit value, thereby forming an intermediate material; and. spraying the formed intermediate material into a preferably cooled spray device comprising a spraying means by operating the spraying means at a rate to allow a decrease in temperature, until the temperature falls below a second limit value, thereby forming the precursor material.