Title:
METHOD AND DEVICE FOR MOLDING SPIRALLY GROOVED FRP PRODUCT
Document Type and Number:
WIPO Patent Application WO/1993/008977
Kind Code:
A1
Abstract:
A method and a device for the continuous draw-molding of a spirally grooved FRP product, which enables grooves to be formed without cutting FRP fibers when intending to mold a spirally grooved FRP product and serves to improve quality thereof while preventing decrease in tensile strength of the grooved FRP molded product. Band-like material (10) is wound in a crosswise spiral pattern around the outer periphery of FRP material before hardened, pressed toward the center of the FRP material, and removed from the FRP that has been hardened, whereby crosswise spiral grooves are formed on the FRP molded product. The process is applied to molding of an FRP product with spiral grooves appropriate for reinforcing the concrete structure.
Inventors:
OZAWA NOBUYUKI (JP)
Application Number:
PCT/JP1992/001270
Publication Date:
May 13, 1993
Filing Date:
October 01, 1992
Export Citation:
Assignee:
KOMATSU PLASTICS INDUSTRY CO L (JP)
International Classes:
B29C53/30; B29C59/02; B29C70/52; B29D1/00; (IPC1-7): B29C67/14; B29K105/10; E04C5/07; E04C5/12
Foreign References:
| JPS5718484B2 | 1982-04-16 | |||
| JPH03202539A | 1991-09-04 | |||
| JPH0368428U | 1991-07-05 |
Other References:
See also references of EP 0667228A4
Download PDF:
Previous Patent: POLYMERIC MOULDINGS REINFORCED WITH TOWS OF FIBRES
Next Patent: LAYERED CRYSTALLINE MATERIAL CAPABLE OF HIGH GUEST LOADING
Next Patent: LAYERED CRYSTALLINE MATERIAL CAPABLE OF HIGH GUEST LOADING