Toray Industries, Inc.

Yasushi Iida

Masanobu Kobayashi

Akihiko Kitano

Masayoshi Yamagiwa

Kenichi Noguchi

Kunihiro Mishima

Tatsuya Hanawa

A method of producing a tubular body wherein a continuous fiber impregnated with a resin is wound around a mandrel body rotating together with a mandrel shaft section at a predetermined circumferential speed while the continuous fiber is reciprocated in parallel with a rotation axis of the mandrel body, including moving a feed roller that feeds the continuous fiber to the mandrel body without rotating from a middle of the mandrel body to one end of the mandrel body; hooking the continuous fiber by a return section provided at the one end of the mandrel body; winding the continuous fiber on the one end of the mandrel body while a center axis of the feed roller is orthogonal to a feeding direction of the continuous fiber; and rotating the center axis of the feed roller to move the feed roller in a reverse direction.

Method of producing tubular body

The pressure vessel of the present invention comprises an inner shell capable of serving as a gas barrier and a pressure resistant outer shell provided to cover the inner shell, said outer shell being made of an FRP comprising reinforcing fibers and a resin and is 35 GPa or more in tensile modulus and 1.5% or more in tensile breaking strain. The present invention can provide a pressure vessel not only light in weight,.but also excellent in retaining its internal pressure against repetitive impacts and also excellent in reliability. The process for producing a pressure vessel of the present invention comprises the step of forming a pressure resistant outer shell made of an FRP comprising reinforcing fibers and a resin and is 35 GPa or more in tensile modulus and 1.5% or more in tensile breaking strain, around an inner shell capable of serving as a gas barrier, by a filament winding method or a tape winding method. The present invention can produce a pressure vessel excellent in retaining its internal pressure, excellent in reliability, and light in weight at a low cost.

Pressure vessel and process for producing the same

The pressure vessel of the present invention comprises an inner shell capable of serving as a gas barrier and a pressure resistant outer shell provided to cover the inner shell, said outer shell being made of an FRP comprising reinforcing fibers and a resin and is 35 GPa or more in tensile modulus and 1.5% or more in tensile breaking strain. The present invention can provide a pressure vessel not only light in weight, but also excellent in retaining its internal pressure against repetitive impacts and also excellent in reliability. The process for producing a pressure vessel of the present invention comprises the step of forming a pressure resistant outer shell made of an FRP comprising reinforcing fibers and a resin and is 35 GPa or more in tensile modulus and 1.5% or more in tensile breaking strain, around an inner shell capable of serving as a gas barrier, by a filament winding method or a tape winding method. The present invention can produce a pressure vessel excellent in retaining its internal pressure, excellent in reliability, and light in weight at a low cost.

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Iyo-gun, Japan

Yasushi Iida