DRY PREFORM OF COMPOSITE MATERIAL AND METHOD FOR MANUFACTURING THE SAME

• Main Authors: NISHIYAMA SHIGERU, HIROKAWA TETSURO
• Format: Patent
• Language: English
• Published: 20.05.2013
• 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; MAKING GRANULES OR PREFORMS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; 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 improve yield, to facilitate arrangement of reinforced fiber in the longitudinal direction, and to increase density of the reinforced fiber in the longitudinal direction, when forming a dry preform by winding the reinforced fiber around an outer periphery of a mandrel.SOLUTION: While the long mandrel 2 is sent to one side in the longitudinal direction, the reinforced fiber (a fiber bundle T1) aligned along the longitudinal direction is supplied to the outer periphery of the mandrel 2 to form a longitudinal reinforced fiber layer 11 covering the circumference of the mandrel 2. The reinforced fiber (fiber bundles T2, T3) is spirally wound around the outer periphery of the mandrel 2 to form spiral reinforced fiber layers 12, 13 covering the circumference of the mandrel 2.