LONG FIBER-REINFORCED THERMOPLASTIC RESIN COMPOSITE BODY

摘要

A long fiber-reinforced thermoplastic resin covered composite body comprising a core portion which is a thermoplastic resin composite body reinforced in a longitudinal direction by reinforcing fibers and a covering portion made of a thermoplastic resin and covering the peripheral surface of the core portion, wherein the content of the reinforcing fibers is at least 10 weight %, the mean diameter or the mean thickness of the core portion is 3 mm or more and the mean thickness of the covering portion is 0.3 to 1.5 mm. Particularly when this composite body has a reinforcing fiber content of l0 to 80 weight %, a mean diameter of the section when the composite body is cut perpendicularly to the longitudinal direction is 3 mm or more and a mean deviation of the diameter is 0.10 or less, the shape accuracy of the composite body is excellent, and the composite body can be used alone as a product. Such a composite body can be obtained by passing the resin through at least two shaping/cooling slits within a specific temperature range. Further, the covered composite body can be easily obtained by using a production apparatus including a box-shaped molten resin bath whose top is open, and which is equipped with one or a plurality of inlet nozzles arranged horizontally on a side surface thereof and with one or a plurality of outlet nozzles on the opposed surface aligned with the inlet nozzles.