JPS645827A - Manufacture of tubular body such as angling rod or the like - Google Patents

Abstract

PURPOSE:To more improve the strength of a tubular body by a method wherein prepreg is wound round a mandrel, successively taping is applied on the wound prepreg, the resultant taped prepreg is subjected to thermosetting treatment and finally the mandrel is removed and the tape is peeled off so as to form the tubular body and, after that, thermosetting synthetic resin is applied onto the outer peripheral surface of the tubular body and further high-strength fiber yarn is cross-wound round the tubular body. CONSTITUTION:Prepreg, which is made of high-strength reinforcing fiber woven cloth such as glass fiber woven cloth or the like impregnated with thermosetting synthetic resin, is wound round a mandrel and, after being bound with tape at its upper part, subjected to thermosetting treatment. After that, the mandrel is drawn out and the tape is peeled off the prepreg and the surface of the resultant prepreg is polished in order to manufacture a tubular stock 1. Thermosetting synthetic resin, which is the same kind of resin as that of the prepreg, is applied onto the surface of the tubular stock 1 and, before said resin hardens, yarn 2, which is made of carbon fiber or the like and formed in the shape of fiber bundle, tape or the like, is cross-wound round the tubular stock and, after that, when necessary, thermosetting synthetic resin, which is the same kind of resin as that just mentioned above, is applied onto the surface of the tubular stock in order to supply the loss of the resin, and the stock is again subjected to thermosetting treatment under the state that its outer peripheral surface is bound with tape. Finally, the tape is peeled off the stock and the surface of the stock is polished lightly so as to roughen and applied with coating in order to manufacture a tubular body such as an angling rod or the like.