Patent ID: 8529826

Claim:
A manufacturing method of a honeycomb structure, comprising: forming kneaded clay containing a cordierite forming raw material that contains talc having an average particle diameter of 0.1 to 40 μm, kaolin having an average particle diameter of 0.1 to 20 μm, and an alumina source raw material having an average particle diameter of 0.05 to 10 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 obtain a honeycomb formed body; and firing the honeycomb formed body to obtain a honeycomb structure whose porosity is less than 40%, wherein the kneaded clay contains 0.01 to 1 part by weight of the hygroscopic resin with respect to 100 parts by weight of the cordierite forming raw material.