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US 5,633,074 AGranted
Prepreg available for fiber reinforced thermoplastic resin and process of producing sporting goods using the same
AssigneeYamaha Corporation
InventorsKunimasa Muroi, Toshiharu Fukushima, Kunio Hiyama
Life of this patent
Estimating the term…
Abstract
A prepreg for a sleeve member of fiber reinforced thermoplastic resin available for a tennis racket or a golf club is woven by using ribbon-shaped reinforcing fiber tows/uni-directional commingle yarns and matrix fiber tows, and the ribbon-shaped reinforcing fiber tows/commingle yarns make the prepreg and, accordingly, the sleeve product thin, light, highly dense, economical and large in mechanical strength.
Claims9
A prepreg for a product of fiber reinforced thermoplastic resin, comprising:
- a plurality of first thread means fusible under application of heat for forming a matrix of said fiber reinforced thermoplastic resin;
- and
- a plurality of second thread means providing reinforcing fibers of said fiber reinforced thermoplastic resin, each of said plurality of second thread means being a ribbon-shaped reinforcing fiber tow, said plurality of first thread means and said plurality of second thread means being woven into said prepreg, said ribbon-shaped reinforcing fiber tow being equal in thickness to or less than 0.5 millimeter, and the width of said ribbon-shaped reinforcing fiber tow being at least ten times larger than the thickness thereof.
Dependencies are inferred from the claim text.