摘要:
A feed material is introduced into a pressure-kneading portion of a kneader with a slightly insufficient water content, wherein the remaining water is added and the material is kneaded to be delivered from the kneader as having a predetermined water content, and concurrently the water content of the kneaded material being delivered is continuously measured near the exit of said kneader and the amount of water to be added to the pressure-kneading portion is controlled according to the measured water content, whereby the water content in the kneaded material is maintained constant.