Production method for fiber-reinforced thermoplastic resin composite material, production method for fiber-reinforced thermoplastic resin tape, production method for press-molding material, production method for molded article, unidirectional prepreg, and molded article
AssigneeMitsubishi Chemical Corporation
InventorOsamu Okunaka
Life of this patent
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Abstract
A production method for a fiber-reinforced thermoplastic resin composite material, the method using a crosshead die (1) that has a maximum aperture height of 1 mm or more, wherein reinforcing fibers are supplied in a reinforcing fiber bundle to the crosshead die (1), the reinforcing fibers are conjugated with a melted thermoplastic resin, and the conjugate is brought into contact with a pressurization surface that is at or below the solidification temperature of the thermoplastic resin, is pressurized, and is shaped to have a thickness that is 50% or less of the aperture height.
Claims18
A production method for a fiber-reinforced thermoplastic resin composite material, the method comprising:
- supplying a reinforcing fiber to a crosshead die having a maximum opening height of 1 mm or more in a reinforcing fiber bundle state,
- compositing the reinforcing fiber with a thermoplastic resin in a molten state,
- subsequently impregnating the reinforcing fiber with the thermoplastic resin while bringing the composite material into contact with a pressurization surface at a pressure of 5 kgf or more and 50 kgf or less at a temperature equal to or lower than the solidification temperature of the thermoplastic resin, and
- shaping the composite material through pressurization to have a thickness to be 20% or less of the opening height.
Dependencies are inferred from the claim text.