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Title:
HEATING FURNACE
Document Type and Number:
Japanese Patent JP2008082611
Kind Code:
A
Abstract:

To provide a heating furnace wherein a cylindrical inner muffle into which a carbon fiber filament material is continuously inserted and which is filled with inactive gas is encircled by an outer muffle having a heat insulating material layer, and a heating space filled with the gas is formed outside the inner muffle, namely, inside the outer muffle, where a rod heater is arranged, having improved productivity and product quality by improving the heater to elongate the life of the heater.

In the heating furnace, the cylindrical inner muffle into which the carbon fiber filament material is continuously inserted and which is filled with the inactive gas is encircled by the outer muffle having the heat insulating material layer, and the heating space filled with the gas is formed outside the inner muffle, namely, inside the outer muffle, where the rod heater is arranged. A carbon fiber filament 18 is wound and layered on a diameter shrunk portion 17 of a base 13 of the heater 11.


Inventors:
KOTANI TOMOYUKI
Application Number:
JP2006000262262
Publication Date:
April 10, 2008
Filing Date:
September 27, 2006
Export Citation:
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Assignee:
MITSUBISHI RAYON CO
International Classes:
F27B9/34; D01F9/32; F27B9/04; F27B9/06
Attorney, Agent or Firm:
志賀 正武
高橋 詔男
渡邊 隆
青山 正和
鈴木 三義
西 和哉
村山 靖彦



 
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