Title:
SEALING DEVICE FOR DOORWAYS OF PARTITIONS OF CONTINUOUS ANNEALING FURNACE, CONTINUOUS COATING EQUIPMENT, AND THE LIKE
Document Type and Number:
WIPO Patent Application WO/1995/016888
Kind Code:
A1
Abstract:
A sealing device used for preventing the risk of explosion or fire caused by the electrostatic spark occurring at the sealing section of doorway of a partition using flammable gases liable to cause explosion or fire in a continuous annealing furnace for conducting bright annealing or nonoxidative annealing of metal strips, continuous coating equipment, and the like, and for preventing the surface of a strip from being scuffed or scratched. The device is provided in the sealing section and comprises a combination of metallic sealing pieces (16), elastic pads (17) provided on the surface of each piece (16), and elastic rotating rolls (18) pressed against a metal strip (1) and the pads (17). The pad (17) has a surface resistivity of 10-3-106 'OMEGA'.cm and is made of a carbon-containing fiber, a chemical fiber made from polypyrrole, which is a conductive polymer with a conjugated electron system, a fiber prepared by treating an acrylic fiber with a copper (II) compound and a sulfur compound, or a conductive nonwoven fabric mainly comprising these fibers.
Inventors:
NAKAMURA TERUHISA (JP)
Application Number:
PCT/JP1994/002100
Publication Date:
June 22, 1995
Filing Date:
December 14, 1994
Export Citation:
Assignee:
NISSHIN STEEL CO LTD (JP)
NAKAMURA TERUHISA (JP)
NAKAMURA TERUHISA (JP)
International Classes:
B05C9/14; C21D1/74; C21D9/56; D04H1/42; F26B13/00; D06M15/356; F27B9/28; F27D1/18; F27D7/06; F27D99/00; H05F1/02; H05F3/02; D06M101/00; D06M101/16; D06M101/18; D06M101/28; F27B9/04; F27D3/00; F27D21/00; (IPC1-7): F27D7/06; C21D9/56; B05C15/00; H05F3/02
Foreign References:
| JPS62214134A | 1987-09-19 | |||
| JPS62287020A | 1987-12-12 | |||
| JPH0436999A | 1992-02-06 |
Other References:
See also references of EP 0685696A4
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