METHOD FOR MANUFACTURING POLYAMIDE COMPOSITE ITEMS

• Main Authors: ORANGE, Gilles, JEOL, Stéphane
• Format: Patent
• Language: English; French; German
• Published: 31.07.2019
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; 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; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

The present invention relates to the use of high-fluidity polyamide that is used for impregnating reinforcement materials taking the form of industrial fabric material for manufacturing composite materials. The field of the invention is that of composite materials, liquid composite molding (LCM) methods, and the resulting parts. The invention more particularly relates to a method for manufacturing a polyamide composite item by means of injection molding that includes at least the steps of: adding at least one reinforcement material into a preheated mold; raising the temperature of the mold; optionally maintaining the temperature of the mold before injecting a polyamide composition; injecting a molten polyamide composition into the mold, thus enabling the flow of the resin through the reinforcement material; cooling; and recovering the resulting composite article.