Method for preparing oriented discontinuous long fiber reinforced thermoplastic resin composite sheet product

摘要

A method for preparing a thermoplastic resin composite sheet product reinforced by oriented and discontinuous long fibers comprises a first step in which a plurality of prepreg pieces of a fiber-reinforced thermoplastic resin composite are fed to a horizontal sieve plate in vibration. The prepreg pieces are then caused by the vibration of the sieve plate to fall through the parallel ditches of the sieve plate on a mold plate or thermoplastic resin sheet product located under the sieve plate. The prepreg pieces deposited on the mold plate or thermoplastic resin sheet product are subsequently subjected to heating and pressing such that a thermoplastic resin composite sheet product reinforced by the oriented discontinuous long fibers is formed.