METHOD FOR PRODUCING HONEYCOMB STRUCTURES

摘要

A plurality of inlet-side octagonal cells and outlet-side quadrangular cells partitioned by partition walls on an upper surface and a lower surface are opened in a green honeycomb molded body in which a plurality of through-holes partitioned from each other by the partition walls are open in an end surface of a columnar body. Four outlet-side quadrangular cells having a smaller opening area adjoin around one inlet-side octagonal cell through the partition walls. The partition walls are joined together and the inlet-side octagonal cells are opened while closing the outlet-side quadrangular cells on the inlet side and the outlet-side quadrangular cells are opened while closing the inlet-side octagonal cells on the outlet side in a particulate-matter-removing filter such as a diesel particulate filter.

主权项

1. A method for producing a honeycomb structure comprising a plurality of through-holes that open in an end surface of a columnar body and are mutually partitioned by partition walls, a part of the plurality of through-holes having been closed, the method comprising:
a closing step of closing a part of the through-holes by joining the partition walls in a green honeycomb molded body together at the end surface, wherein the green honeycomb molded body in which a part of the through-holes are closed at the closing step includes, at the end surface, one first through-hole and four second through-holes that have a smaller opening area than the first through hole and adjoin around the one first through-hole with the partition walls provided therebetween.