Patent ID: 6413343
Filing Date: 2002-07-02
Classification: A63B,B29C,B29K,B29L,Y10S

Abstract:
A method of manufacturing a composite golf club shaft, the method comprising:preparing a plurality of plies of pre-preg composite fiber sheet to be used in forming the shaft, the plurality of plies of pre-preg composite fiber sheet including a first plurality of plies wherein composite fibers are bound within a thermoplastic binding matrix and at least one additional ply wherein composite fibers are bound within a thermoset binding matrix; wrapping the first plurality of plies in a predetermined manner around a flexible bladder covered mandrel; pre-curing the first plurality of plies; wrapping a ply of high peel strength nylon epoxy adhesive around a periphery of the first plurality of plies; wrapping said at least one additional ply around the ply of high peel strength nylon epoxy adhesive; positioning the ply wrapped mandrel in a mold; inflating the flexible bladder to a predetermined pressure; and heating the mold to a predetermined temperature for a predetermined period of time.