Patent ID: 7637650

Claim:
An operating method of a continuous mixer comprising a barrel having a chamber; a feed port provided on one end side of said barrel; a mixed material discharge port provided on the other end side of said feed port of said barrel; a screw penetrated in said chamber, said screw comprising a feed part for conveying a resin raw material to be mixed and a mixing part for mixing the resin raw material to be mixed by applying a shearing force thereto; a driving unit; and a resin raw material discharge port positioned for communicating said feed part in said chamber to the outside of said barrel, the method comprising the steps of: feeding resin raw material through the feed port; rotating the screw via the driving unit in a first direction for conveying the resin raw material to the mixing part; mixing and melting the resin raw material by applying a shearing force thereto via the mixing part while rotating the screw via the driving unit in the first direction; and rotating the screw via the driving unit in a second direction opposite the first direction for discharging said resin raw material through said raw material discharge port.