Liquid colorant compatible melting discharge device, liquid colorant injection device, and control method of liquid colorant compatible melting discharge device

摘要

PROBLEM TO BE SOLVED: To provide a liquid colorant injection device capable of stably obtaining a desired hue.SOLUTION: A liquid colorant injection device 11 for supplying a liquid colorant L to a melting discharge machine F, such as an injection molding machine and an extrusion molding machine for melting and discharging a raw resin, is provided with: a liquid colorant storage tank 12; a delivery pump 13 for delivering the liquid colorant L from the liquid colorant storage tank 12 to the melting discharge machine F through a delivery pipeline t1; a valve 15 for opening and closing the delivery pipeline t1; and a controller 16 for controlling a delivery amount of the liquid colorant L.SELECTED DRAWING: Figure 1