Fiber-reinforced thermoplastic resin pellets and manufactuing method thereof
AssigneeKabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
InventorsRyosaku Kadowaki, Yasuo Hirano, Toshihiro Asai
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Abstract
Disclosed is fiber-reinforced thermoplastic resin pellets that satisfy the quality stability (homogeneous impregnation, deterioration prevention of reinforcing fiber) of the molding material and the strength performance of the molded product, using natural discontinuous fiber as the reinforcing fiber, and a manufacturing method of the pellets. A plurality of spun yarns with No. 5 to 80 counts are twisted 10 to 200 turns/m and pultruded when fiber-reinforced thermoplastic pellets containing natural fiber as the reinforcing fiber are manufactured by the impregnating pultrusion method.
Claims3
Natural fiber-reinforced thermoplastic resin pellets comprising thermoplastic resin and strand comprising a plurality of spun yarns of natural fiber twisted in a range from 10 to 200 turns/m,
- wherein the spun yarn is No. 5 to 80 counts in diameter.
A method for manufacturing natural fiber-reinforced thermoplastic resin pellets comprising steps of:
- impregnating step for impregnating in a thermoplastic resin bath, a plurality of spun yarns of natural fiber being No. 5 to 80 counts in diameter,
- pultruding step for pultruding the spun yarns with twisting 10 to 200 turns/m to obtain natural fiber-reinforced thermoplastic resin, and
- palletizing step for palletizing the natural fiber-reinforced thermoplastic resin.
Dependencies are inferred from the claim text.