NOVEL PULTRUSION ARTICLE HAVING SURFACE THIN LAYER AND PRODUCTION THEREOF

• Main Authors: KOMIYA IWAO, YOKOGAWA SHIGEYO, TAKAYAMA YUJI
• Format: Patent
• Language: English
• Published: 30.06.1997
• Edition: 6
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To produce a pultrusion article having a surface thin layer at the same molding speed as usual pultrusion by integrally applying a thermosetting resin compsn. and a thermosetting resin compsn. not generating heavy polymerization obstruction to the outer periphery of a pultrusion article to cure the same. SOLUTION: The impregnated long fiber reinforcing material 1 passed through an impregnation tank housing a thermosetting resin compsn. (A) is drawn in the preform part 4 of a mold 3 through a guide plate. The mold 3 is constituted so that the preform part 4 is connected to the leading end of a curing mold 5 of which the leading end part has a curved surface and a resin sump 6 is formed by utilizing the mutual curved surfaces of the connection part thereof and an injection pipe 8 supplying a thermosetting resin compsn. (B) 7 is connected to the resin sump 6. When the shaped article 9 from the preform part 4 is passed through the resin sump 6, the thermosetting resin compsn (B) 7 spread to the periphery of the shaped article 9 is applied thereto and the coated shaped article advances in the direction shwon by an arrow 14 to enter the curing mold 5 to be heated and cured by a hot plate 13 and a pultrusion article 11 having a surface thin layer 10 is drawn out of the curing mold 5 as shown by an arrow 16. The vicinity of the resin sump 6 is cooled by a cooling pipe 13.