MASK FOR SEALING HONEYCOMB STRUCTURE, AND SEALING METHOD FOR HONEYCOMB STRUCTURE USING SAME

摘要

The mask of the invention is used for plugging of the cells of a honeycomb structure, and it has a plurality of first through-holes running through a thickness direction of the mask, in a region that is to contact with an end face of the honeycomb structure when used. The first through-holes have an open area of 0.03 mm 2 or greater, and less than 90% of an open area of the cells to be plugged through the first through-holes.