Title:
CLOTH FOR POLISHING MAGNETIC DISK
Document Type and Number:
Japanese Patent JP2001179595
Kind Code:
A
Abstract:
To provide a cloth for polishing a magnetic disk allowing polishing machining of more uniform and fine surface rughness Ra, by reducing a meandering phenomenon during texture machining.
Warp mainly comprises polyester filament fiber, and weft comprises crimped threads mainly made of polyester extra fine filament. The cloth is woven as five or more satin fabric with cover factor CF represented by the following equation 1 of 2400-3400, and variation rate of ductility during a wet period relative to ductility during a drying period loaded with 1.5 Kg in the warp direction is 30% or less. CF=[warp total fineness (dtex)]1/2 ×warp density (number/25.4 mm) + [weft total fineness (dtex)]1/2 × weft density (number/25.4 mm).
Inventors:
KIYOMURA ETSUO
TOMIOKA SADAO
SATO DAISUKE
TOMIOKA SADAO
SATO DAISUKE
Application Number:
JP36606999A
Publication Date:
July 03, 2001
Filing Date:
December 24, 1999
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
B24B29/00; B24B21/00; B24D3/00; B24D11/00; D03D1/00; (IPC1-7): B24B29/00
Attorney, Agent or Firm:
Shinichi Ogawa (2 outside)
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