Honeycomb structure molding die having narrow slit grooves with recesses and protrusions
AssigneeDenso Corporation
InventorsTakeshi Fukushima, Akira Sasaki
Life of this patent
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Abstract
A honeycomb structure molding die that can mold a thin-walled honeycomb structure without degrading the moldability has been provided. A honeycomb structure molding die 8 comprises at least supply holes 81 to supply materials and slit grooves 82 that are communicated with the supply holes 81 and mold the materials into a honeycomb shape, wherein the groove width of the slit grooves 82 is not more than 100 μm and simultaneously, recesses 41 and protrusions 42 that extend in the direction in which the materials are extruded are provided on a pair of opposing side surfaces 820 of the slit grooves 82.
Claims6
A honeycomb structure molding die, comprising at least supply holes to supply materials and slit grooves that are communicated with the supply holes and mold the materials into a honeycomb shape,
- wherein the groove width of the slit grooves is not more than 100 μm and simultaneously, recesses and protrusions that extend in the direction in which the materials are extruded are provided on a pair of opposing side surfaces of the slit grooves, respectively.
A honeycomb structure molding die, comprising at least supply holes to supply materials and slit grooves that are communicated with the supply holes and mold the materials into a honeycomb shape,
- wherein the groove width of the slit grooves is not more than 100 μm and simultaneously, pitch P1 of protrusions, which is obtained by measuring the surface roughness in the direction in which the materials are extruded, and pitch P2 of protrusions, which is obtained by measuring the surface roughness in the direction perpendicular to that in which the materials are extruded, satisfy the relationship P1/P2>1.5, on a pair of opposing side surfaces of the slit grooves.
Dependencies are inferred from the claim text.