PREPARATION OF COMPOSITE MOLDED PRODUCT

• Main Authors: INOUE MASATAKA, YAMAMOTO SHIRO
• Format: Patent
• Language: English
• Published: 07.10.1992
• 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

PURPOSE:To efficiently prepare an integrated composite molded product wherein a surface layer part is composed of a resin phase containing a fibrous reinforcing material and a core part is composed of a porous resin phase containing air bubble particles. CONSTITUTION:An extensible air permeable sheet (11) permitting the passage of gas and the penetration of a resin but preventing the free passage of the resin, a sheet (12) composed of a fibrous reinforcing material and a mixture (14) of foamable particles and a thermosetting resin are received in a mold and the mold is closed to perform molding under heating. The gas generated at the time of molding is discharged from the molding space of the mold through the air permeable sheet.