METHOD OF MANUFACTURING AN OPEN CELLULAR ARTICLE

摘要

METHOD OF MANUFACTURING AN OPEN CELLULAR ARTICLE A method of manufacturing an open cellular article constructed of a plurality of spaced walls of relatively weak bondable material defining a plurality of elongated passages therethrough which are filled with a disintegratable filler material having sufficient form and strength initially to maintain the walls in their predetermined precisely spaced relation and after bonding of the walls into an integral unit such filler material being conveniently removable from the article to reestablish the passages between the walls.