| 摘要 |
PROBLEM TO BE SOLVED: To provide a seal chamber that is formed at a raw material fiber inlet part and/or at a carbon fiber outlet part of a heat treatment furnace for producing a carbon fiber and has high operation efficiency of cleaning and improves productivity. SOLUTION: The seal chamber 2 is formed at the raw material fiber inlet part and/or at a carbon fiber outlet part of a heat treatment furnace. The seal chamber 2 has (A) a housing that takes a fiber 4 in and out from the seal chamber 2 and has a traveling route 6 in which the fiber 4 travels in the inside, (B) a plurality of dividing plates 12 that are dividing plates 12 vertically hung from the upper wall 10 of the housing along the traveling route 6 in the housing at given intervals mutually separately in which the plate face direction of each dividing plate 12 is perpendicular to the traveling route 6 and (C) a plurality of dividing walls 16 that are dividing walls 16 formed on the lower wall 14 of the housing in which cross sections along the traveling route 6 direction of the dividing plates 16 form upward projecting zigzag continuous triangular waves. COPYRIGHT: (C)2007,JPO&INPIT
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