Cell breakage is prevented by limiting the maximum particle size of the cordierite starting material powder to no greater than 85% of the slit width of the extrusion molding die so that {HEAD ~ the starting material particles} will not clog inside the slits or {TAIL ~ the introduction port} of the slits 
Cell breakage is prevented by limiting the maximum particle size of the cordierite starting material powder to no greater than 85 % of the slit width of the extrusion molding die so that { HEAD ~ the starting material particles } will not clog inside the slits or { TAIL ~ the introduction port } of the slits
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