Manufacturing method of honeycomb structure

Abstract

There is provided a manufacturing method of a honeycomb structure, comprising: forming kneaded clay containing a cordierite forming raw material formed by mixing talc having an average particle diameter of 0.1 to 40 μm, kaolin having an average particle diameter of 0.1 to 20 μm, an alumina source raw material having an average particle diameter of 0.05 to 10 μm, and a silica having an average particle diameter of 0.1 to 20 μm, a binder, a surface active agent, water, and a hygroscopic resin having an average particle diameter of two to 200 μm after water absorption and a water absorption magnification of two to 100 magnifications into honeycomb shape to fabricate a honeycomb formed body; and firing the honeycomb formed body to obtain a honeycomb structure whose porosity is less than 40%.

Dependencies are inferred from the claim text.