Plastic article or earthenware shaping or treating: apparatus – Means providing a shaping orifice – Single inlet – plural shaping orifices
Patent
1978-07-27
1979-09-25
Flint, Jr., J. Howard
Plastic article or earthenware shaping or treating: apparatus
Means providing a shaping orifice
Single inlet, plural shaping orifices
425382R, 264173, 264209, B29F 304, B29D 2304
Patent
active
041689445
ABSTRACT:
Apparatus for manufacturing a tubular honeycomb with adiabatic passages 107 formed integrally on its outer wall includes a first body 2 having a plurality of honeycomb shaped through holes 6, 7, 10 and a flange 3 secured to an extrusion pipe 1 carrying a plastic material under pressure, and a truncated conical portion 5 projecting coaxially from the flange. A second cylindrical body 12 has a truncated conical through hole disposed coaxially around the conical portion of the first body to define therebetween a first annular space 21 communicating with the honeycomb, and comprises truncated conical projection 15 alternately provided with slits 16 and holes 17 communicating with the first annular space. The first and second bodies are secured together by a stopper ring having a truncated conical through hole communicating with the slits and holes in the second body and disposed coaxially therearound to define therebetween a second annular space 22. The extruded tube thus has a honeycomb core 101 enclosed by a first pipe section 104, and ribs 105 extending radially outwardly from the first pipe section to a surrounding outer second pipe section 106.
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Morikawa Akira
Narita Yoshinori
Flint, Jr. J. Howard
NGK Spark Plug Co. Ltd.
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