PRODUCTION OF GLASS FIBER-FILLED RESIN PELLET

摘要

PURPOSE:To remarkably enhance strength of a molded article by passing continuous split glass fiber to which a coupling agent is imparted through molten resin having low viscosity and sticking molten resin to every single fiber, and thereafter bundling these fibers and cooling them and cutting them into a prescribed length. CONSTITUTION:The perforated slits 41 are formed in a die 33. The slits 41 and a melting device 34 of resin are connected to a passage of resin. Glass fibers 32 are allowed to flow out in a fibrous state one by one at a time through many discharge ports of a nozzle 31. The glass fibers 32 are brought into contact with an imparting roll 39. A coupling agent and an additive excepting a binder are imparted and the glass fibers are aligned and introduced into the slits 41 or the die 33 in this state. At this time, low-viscosity molten resin 40 is simultaneously introduced into the slits 41 of the 33 through the passage 42 of resin of the die 33 from the melting device 34 of resin. Every piece of fiber 32 is coated with resin. Thereafter glass fibers coated with molten resin are bundled and cooled in a cooling tank 35 and furthermore cut by a cutter 37 to give pellets 38. Thereby a state wherein fibers are dispersed and mixed with resin 40 one by one is shown in the cross sections of the pellets 38.