초록 ▼

This invention relates to a process for preparing fiber-reinforced thermoplastic (FRTP) molded articles comprising stacking sheet prepregs comprising unidirectionally arranged reinforcing fibers impregnated with thermoplastic resin and molding the same, and to a process for preparing FRTP molded art

This invention relates to a process for preparing fiber-reinforced thermoplastic (FRTP) molded articles comprising stacking sheet prepregs comprising unidirectionally arranged reinforcing fibers impregnated with thermoplastic resin and molding the same, and to a process for preparing FRTP molded articles by using woven reinforcing fibers in place of unidirectionally arranged reinforcing fibers. The FRTP molded articles obtained by the process of this invention have high quality and can be molded without unevenness in strength.

대표청구항 ▼

A process for preparing a fiber-reinforced thermoplastic article comprising applying to each of a plurality of sheet prepregs each comprising unidirectionally arranged reinforcing fibers impregnated with a thermoplastic resin, at least one notch in a direction traversing said reinforcing fibers at a

A process for preparing a fiber-reinforced thermoplastic article comprising applying to each of a plurality of sheet prepregs each comprising unidirectionally arranged reinforcing fibers impregnated with a thermoplastic resin, at least one notch in a direction traversing said reinforcing fibers at a depth sufficient to cut said reinforcing fibers, wherein said prepreg contains at least two notches having lengths of from about 2 mm to about 10 mm forming rows having a notch to notch spacing of from about 2 mm to about 30 mm in the direction of said notches and said rows being spaced from each other a distance of from about 5 mm to about 100 mm, and stacking said sheet prepregs and molding said prepregs to form a fiber-reinforced thermoplastic article.