Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Shaping by extrusion
Reexamination Certificate
2003-02-05
2008-10-07
Davis, Robert B (Department: 1791)
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Shaping by extrusion
C264S177170, C264S177190
Reexamination Certificate
active
07431873
ABSTRACT:
The present invention provides a method for manufacturing a honeycomb structure, the method including steps of: forming, by extrusion, a formed body1having an outer wall, partition walls provided inside the outer wall, and cells each surrounded by the partition walls as well as extending to an axial direction of the body; and drying the formed body1. The method for manufacturing the honeycomb structure is characterized in that the forming step includes receiving the formed body on a cradle10which receives the formed body so that an angle of a face7aof the outer wall on the cradle10relative to the horizontal plane is 15 to 35 degrees, a cradle which has a V-shaped cross section with a cut at an apex of the V shape and which receives the formed body so that the angle relative to the horizontal plane is 15 to 45 degrees, or a cradle which receives one face of the formed body and characterized in that the drying step includes drying the formed body1in a state of being received on the cradle10having the predetermined angle. The method for manufacturing the honeycomb structure reduces distortion and deformation of the honeycomb structure.
REFERENCES:
patent: 0 260 703 (1988-03-01), None
patent: A 2001-19533 (2001-01-01), None
patent: A 2001-130973 (2001-05-01), None
Translation of EPO 260703 dated Mar. 1988.
Kaneko Takahisa
Nate Masayuki
Wada Yukihisa
Davis Robert B
NGK Insulators Ltd.
Oliff & Berridg,e PLC
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