Method of manufacture of fibers mixed cut is composed essentially of a matrix resinous and short and fine fibers of the reinforcing inorganic

摘要

The process of production of cut fibers and is composed essentially of a resin matrix and of short and fine inorganic reinforcing fibers (carbon fibers of growth in the vapour phase and / or barbs, potassium titanate) consists of entangled, heating and mixing a resinous material and of short and fine inorganic reinforcing fibers with a diameter of 1 μm or less in order to prepare a molten polymer containing the reinforcing fibers dispersed; to be sprayed the molten polymer 1 by small openings 4 provided in a device 2 of rotation at high speed in order to form of filaments and to inject hot gas 7 on the filaments output 5 in order to obtain the cut fibers mixed 8. Instead of the spraying and the blowing of hot gas, it is possible to adopt the stages which are to be extruded the molten polymer 11 in the filaments by passing through the openings of the die 15 and simultaneously to blow hot gas 17 on the filaments 14 to a high rate of flow from the holes of the discharge of gas 16 situated close to the openings of the drawing, in order to stretch and cutting of the filaments in the staple fibers.