METHOD FOR MANUFACTURING GLASS FIBER REINFORCED THERMOSETTING RESIN MOLDED ARTICLE

• Main Authors: KAWAMURA MASAHIDE, IKEGAWA NAOTO, KOBAYAKAWA MASUNORI
• Format: Patent
• Language: English
• Published: 05.02.2002
• Edition: 7
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; 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 manufacture a glass fiber reinforced thermosetting resin molded article generating no anisotropy in strength by suppressing the orientation of glass fibers in a specific direction caused by flowing pressure at the time of mold clamping. SOLUTION: A glass fiber reinforced resin composite material 1 is set to the inside of the upwardly opened recessed mold part 3 provided to a lower mold 2, and the lower mold 2 and an upper mold 5 having a downwardly projected mold part 4 are clamped to fill the cavity formed between the recessed mold part 3 and the projected mold part 4 with the glass fiber reinforced resin composite material 1 to manufacture the glass fiber reinforced thermosetting resin molded article. A mold clamping speed, at a time when the glass fiber reinforced resin composite material 1 flows through the gap between the inner surface of the recessed mold part 3 and the outer surface of the projected mold part 4 after flowing along the almost whole surface of the bottom surface part of the recessed mold part 3, is made slower than a mold clamping speed until the glass fiber reinforced resin composite material flows along the almost whole surface of the bottom surface part of the recessed mold part 3.