Continuous extruding kneader for producing mixture for electrode active material layer, and method for producing mixture for electrode active material layer, electrode laminate, and all-solid-state battery using it

A continuous extrusion kneader for producing a mixture for electrode active material layer, comprising, from upstream to downstream,

• a first supply section for supplying at least a part of a solid electrolyte,
• a first kneading section for kneading a material supplied from the first supply section to provide an intermediate mixture, wherein the first kneading section comprises a forward kneading section comprising a forward kneading screw for kneading the material supplied from the first supply section and conveying the material downstream, and a reverse kneading screw for kneading the material supplied from the forward kneading section and applying a force to the material in the upstream direction,
• a second supply section located downstream of the first kneading section for supplying at least a part of an electrode active material to the intermediate mixture, and
• a second kneading section for kneading the intermediate mixture and the material supplied from the second supply section,
• wherein the first kneading section is located on the downstream side relative to the first supply section, but on the upstream side relative to the second supply section.