Patent ID: 7713325

Claim:
A method for manufacturing a honeycomb filter for purifying exhaust gas, the method comprising: providing a columnar body comprising porous ceramic and having a wall portion and a plurality of through holes partitioned by the wall portion, the plurality of through holes extending in a length direction of the columnar body, the wall portion being configured to collect particles in an exhaust gas; preparing a sealing material comprising an organic binder; coating the sealing material over a circumferential surface of the columnar body to form a sealing material layer comprising the organic binder in a total weight exceeding 0.5% by weight respect to a total weight of the honeycomb filter, Vα; and heating the columnar body having the sealing material layer on the circumferential surface of the columnar body at a temperature sufficient such that the total weight of the organic binder with respect to the total weight of the honeycomb filter, Vα, becomes 0.5% by weight or less.