MANUFACTURE OF FIBERREINFORCED PLASTIC CYLINDER

• Main Authors: ITO HIROHISA, AKIYAMA FUSAO
• Format: Patent
• Language: English
• Published: 20.10.1998
• Edition: 6
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To prevent nonuniform wall thickness from being generated without cutting off interconnected fiber by raising average fiber volume content by a method wherein after removing surplus resin stuck to a surface of an FRP cylinder, mold curing is effected. SOLUTION: After winding to a specific layer structure, that is heated with a heater rotating with a driver 7a while an FRP cylinder C is wound on a mold 6 as it is. Then, a temperature of the FRP cylinder C is raised to 20 to 100 deg.C, and resin on a surface of the cylinder C is removed. For the removing method, a removing means 8 comprising various absorption materials, a flexible scraper, a jet nozzle of inactive gas, etc., is fitted to a carriage 3a reciprocating along a guide 4a, and resin is uniformly removed from the surface of the rotating FRP cylinder C. Thereafter, it is further heated, cured, and released from a mold 6. Thus, processes of winding of interconnected fiber on the mold 6, heating, and removal and heat curing of surplus resin can be continuously executed with the same apparatus.