Tubular body made of fiber-reinforced epoxy resin material
AssigneeDunlop Sports Co. Ltd.
InventorsKazuyoshi SHIGA, Yasuo NAITO
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Abstract
It is an object to provide a tubular body made from a novel fiber-reinforced epoxy resin material having improved strength. A tubular body made of a fiber-reinforced epoxy resin material according to the present invention is a tubular body made of a fiber-reinforced epoxy resin material comprising a cured product of an epoxy resin composition and a reinforcing fiber. The cured product of the epoxy resin composition has a swelling ratio of 20% by mass to 42.5% by mass in methyl ethyl ketone.
Claims20
A tubular body made of a fiber-reinforced epoxy resin material comprising a cured product of an epoxy resin composition and a reinforcing fiber, wherein the cured product of the epoxy resin composition has a swelling ratio in a range from 20 mass % to 42.5 mass % in methyl ethyl ketone.
A golf club shaft comprising a tubular body made of a fiber-reinforced epoxy resin material, wherein the fiber-reinforced epoxy resin material comprises a cured product of an epoxy resin composition and a reinforcing fiber, wherein the cured product of the epoxy resin composition has a swelling ratio in a range from 20 mass % to 42.5 mass % in methyl ethyl ketone.
Dependencies are inferred from the claim text.