Method for producing fiber reinforced plastic rods having helical ribs
AssigneeNippon Petrochemicals Company, Limited
InventorsHitoharu Ishizuka, Reiko Kubo
Life of this patent
Estimating the term…
Abstract
A method for producing a fiber reinforced plastic rod having ribs on its surface by impregnating a reinforcing material which has continuous long fiber bundles with an uncured liquid resin. A rib forming member is separately prepared by impregnating a fiber bundle reinforcing material with an uncured liquid resin. A fiber reinforced plastic rod is formed by helically applying the rib forming member to the surface of the substrate forming member and together curing the two members into an integral body. A fiber reinforced plastic rod, prepared in accordance with this method, is also described.
Claims9
A method for producing a fiber reinforced plastic rod having ribs on its surface, which method comprises the steps of:
- preparing a substrate forming member by impregnating a reinforcing material of continuous long fiber bundles with an uncured liquid resin;
- separately preparing a rib forming member consisting of a reinforcing material of fiber bundles;
- helically applying said rib forming member on the surface of said substrate forming member under tension such that said rib forming member partially sinks into the surface portion of said substrate member and allowing said uncured liquid resin of said substrate forming member to impregnate into said rib forming member;
- and
- curing said substrate forming member together with said rod forming member into an integral body.
A method for producing a fiber reinforced plastic rod having ribs on its surface, which method comprises the steps of:
- preparing a substrate forming member by impregnating a reinforcing material of continuous long fiber bundles with an uncured liquid resin;
- separately preparing a rib forming member by impregnating a reinforcing material of fiber bundles with an uncured liquid resin;
- helically applying said rib forming member on the surface of said substrate forming member under tension such that said rib forming member partially sinks into the surface of said substrate forming member;
- and
- curing said substrate forming member together with said rod forming member into an integral body.
Dependencies are inferred from the claim text.