| 摘要 |
The present invention relates to an apparatus for supplying a composite resin, which comprises: a resin supplying section in which a plurality of resin supplying flow paths for supplying a composite resin comprising a first resin including PP (polypropylene) and a second resin including EVOH (ethylene vinylalcohol copolymer); a piston assembly including an upper and lower piston sections for elevating a valve pin so that the composite resin may be ejected; and a nozzle assembly comprising an outer bush including a first outer bush having a first and a second resin conveying paths linked to the resin supplying flow paths to supply the first and the second resins toward an inner bush and an outer bush, and a second outer bush provided at the bottom of the first outer bush, receiving the inner bush inserted thereto and having a first and a second resin flow paths linked to the first and the second resin conveying paths, a first resin circulation flow path linked to the first resin conveying path and a resin discharge hole for discharging a composite resin ejected from the inner bush toward a nozzle housing, an inner bush inserted into the outer bush so that the second resin may be ejected while circulating along the outer circumferential surface and the first resin may be ejected according to the operation of the valve pin, and a nozzle housing receiving the outer bush inserted therein and ejecting the composite resin ejected through the outer bush and the inner bush toward the gate of a mold. |
