Apparatus for production of fiber-reinforced resin strand

Abstract

An apparatus for production of fiber-reinforced resin strand excelling in durability that is capable of producing a fiber-reinforced resin strand at high production speed without sliding problem. There is provided an apparatus for production of fiber-reinforced resin strand comprising spreader (8) for fibrillation of reinforcing fiber bundle (3) disposed in cross head (5) into which molten resin material (2) is continuously fed from extruder (6); comprising, disposed downstream of exit nozzle (5a) of the cross head (5), twisting rollers (11a,11b) for drawing out fiber-reinforced resin strand (9) composed of a resin impregnated fiber bundle from the exit nozzle (5a) and for strand twisting; and comprising, disposed downstream of the twisting rollers (11a,11b), twist retention rollers (12a,12b) for retaining of the twist of the fiber-reinforced resin strand (9), wherein all the twisting rollers (11a,11b) and twist retention rollers (12a,12b) without exception are made of a metal with uneven surface.

Description

technical field [0001] The present invention relates to a manufacturing apparatus of a fiber-reinforced resin strand, and more specifically, to a manufacturing apparatus of a fiber-reinforced resin strand excellent in productivity of the fiber-reinforced resin strand. Background technique [0002] Granules obtained by cutting long strands of fiber-reinforced resin into, for example, about 3 to 15 mm, used to manufacture automotive interior parts (control boxes, instrument panels, etc.) and automotive exterior parts (bumpers, fenders, etc.) , Injection molded products such as casings of electronic equipment components (notebook computers, mobile phones, etc.). [0003] As technologies related to conventional examples of fiber-reinforced resin strands and their manufacturing apparatuses, for example, the following technologies are known. First, a manufacturing apparatus of a fiber-reinforced resin strand as Conventional Example 1 will be described with reference to FIG. 17 , ...

AI Technical Summary

Problems solved by technology

[0006] However, the above-mentioned fiber-reinforced resin strand manufacturing apparatus of Patent Document 1 has a problem that it is difficult to manufacture fiber-reinforced resin strands at a high production speed (for example, 40 m / min).

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