METHODS OF PLUGGING A HONEYCOMB BODY AND MASK LAYERS THEREOF

A method of plugging a filter, comprising: positioning a mask layer over the filter comprising a plurality of intersecting walls, wherein the intersecting walls define at least one channel between the intersecting walls; perforating the mask layer proximate the channel to form a hole, wherein the hole extends around a portion of a perimeter of the channel such that the mask layer defines a flap extending over a center of the channel; passing a plugging mixture into the channel through the hole in the mask layer; and sintering the plugging mixture to form a plug within the channel. 一种对过滤器进行堵塞的方法，所述方法包括：将罩层定位在包括多个相交壁的过滤器上，其中，所述相交壁限定了在相交壁之间的至少一个通道；在通道附近对罩层进行穿孔以形成孔，其中，孔围绕通道周界的一部分延伸，以使得罩层限定在通道的中心上延伸的挡件；使堵塞混合物通过罩层中的孔进入到通道中；以及对堵塞混合物进行烧结以在通道内形成堵塞物。