KNEADER

摘要

A kneader adapted to knead an object material mechanically with a high efficiency by passing the object material by a free fall thereof owing its own weight through modified passages the cross-sectional shape of each of which varies gradually in the lengthwise direction thereof, wherein a plurality of elements (11a, 11b) having a plurality of substantially vertically extending modified passages (12, 13) which are provided with inlets (12a, 13a) and outlets (12b, 13b) at one end portion and the other end portion respectively of each thereof, and which vary in cross-sectional shape continuously from the inlets to the outlets, are joined together and set so that the modified passages extend substantially vertically, the directions in which the modified passages (12, 13) extend being changed from one another so that straight through passages extending from the inlets to the outlets do not exist in the elements.