초록 ▼

A method of consolidating a fiber reinforced thermoplastic poly(arylene sulfide) composite by vacuum bagging. A fiber reinforced thermoplastic is placed between stainless steel sheets and then placed in a vacuum bag. A vacuum is applied to the bag and heat and pressure are applied to the layup to fo

A method of consolidating a fiber reinforced thermoplastic poly(arylene sulfide) composite by vacuum bagging. A fiber reinforced thermoplastic is placed between stainless steel sheets and then placed in a vacuum bag. A vacuum is applied to the bag and heat and pressure are applied to the layup to form a composite. A plurality of fiber reinforced sheets may be consolidated between a plurality of stainless steel sheets.

대표청구항 ▼

A process for simultaneously forming a plurality of flattened consolidated composite sheets, each of said sheets comprising a fiber reinforced thermoplastic resin, said process comprising the steps of: (A) supporting on a substantially flat, rigid substrate surface a stack comprising a plurality of

A process for simultaneously forming a plurality of flattened consolidated composite sheets, each of said sheets comprising a fiber reinforced thermoplastic resin, said process comprising the steps of: (A) supporting on a substantially flat, rigid substrate surface a stack comprising a plurality of interfacially adjacently arranged composite layers, at least two adjacent said layers being separated from one another by an interposed metallic sheet, said stack further including a metallic sheet positioned adjacent the outside surface of each of the topmost said layer and the bottommost said layer, each said layer comprising a thermoplastic resin and reinforcing fibers, said substrate surface being thermally stable at a temperature above the melting point of said thermoplastic resin, (B) overlaying said stack with an air-impermeable sheet and sealing said air-impermeable sheet peripherally around said stack to said substrate surface, said air-impermeable sheet being thermally stable to a temperature above the melting point of said thermoplastic resin, thereby to produce a layup comprised of said substrate surface, said stack, and said air-impermeable sheet, (C) heating said layup in a heating zone to a temperature sufficient to melt said thermoplastic resin, said heating being carried out by impinging heated gas against said layup, (D) applying suction between said air-impermeable sheet and said substrate surface, thereby to urge said sheet towards said substrate surface and achieve wet-out of said reinforcing fibers by said molten thermoplastic resin, and (E) cooling said layup in a cooling zone to a temperature below the melting point of said thermoplastic resin, said cooling being carried out by impinging gas cooled to below about 100°F. against the resulting said layup, thereby to form said plurality of consolidated composite sheets.