US 12,434,405 B2
Method and device for producing honeycomb structure
Yuto Naito, Hashima-Gun (JP)
Assigned to NGK INSULATORS, LTD., Nagoya (JP)
Filed by NGK INSULATORS, LTD., Nagoya (JP)
Filed on Oct. 27, 2021, as Appl. No. 17/452,440.
Claims priority of application No. 2021-037746 (JP), filed on Mar. 9, 2021.
Prior Publication US 2022/0288811 A1, Sep. 15, 2022
Int. Cl. B28B 3/26 (2006.01); B29C 48/11 (2019.01); B29L 31/60 (2006.01)
CPC B28B 3/269 (2013.01) [B29C 48/11 (2019.02); B29L 2031/608 (2013.01); F01N 2330/30 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method for producing a honeycomb structure, the honeycomb structure comprising:
an outer peripheral wall;
a partition wall arranged on an inner side of the outer peripheral wall, the partition wall defining a plurality of cells each extending from one end face to other end face to form a flow path;
a plurality of slits spaced apart from each other in a circumferential direction and extending inwardly in a radial direction from the outer peripheral wall, the plurality of slits being provided such that the outer peripheral wall is opened; and
a filling material filling each of the slits,
wherein the method comprises:
a preparation step of preparing a honeycomb structure element having the plurality of slits; and
a filling step of filling the plurality of slits with the filling material by a contacting member by feeding the filling material to an outer peripheral surface of the honeycomb structure element, and rotating the honeycomb structure element while pressing a tip portion of the contacting member inclined at an angle relative to a normal line of the outer peripheral surface of the honeycomb structure element against the outer peripheral surface with a force, to obtain the honeycomb structure having the plurality of slits filled with the filling material.