ABRASIVE CLOTH AND POLISHING METHOD

Title:

ABRASIVE CLOTH AND POLISHING METHOD

Document Type and Number:

WIPO Patent Application WO/2002/045906

Kind Code:

A1

Abstract:

Abrasive cloth comprising composite cloth having a fiber base material and a polymer elastic body filled in the material, characterized in that the fiber base material (1) is composed of fiber bundles each formed by bundling 20-3000 very fine fibers, and (2) the fiber bundle's very fine fibers have an average diameter (D1) of 0.3-10 $g(m)m at a portion ranging from the center of a section perpendicular to the lengthwise direction of a bundle up to the 1/2-radius periphery thereof and an average diameter (D2) of very fine fibers existing in an outer peripheral portion ranging from the 1/2-radius periphery up to the outer periphery is 0.05-1 $g(m)m, a ratio D1/D2 being at least 1.5. The abrasive cloth is suitably used for substrate texture processing in producing a magnetic recording medium, especially a hard disk, permits high-precision surface finishing, and has an excellent strength.

Inventors:

TANAKA MANABU (JP)
SUZUKI YOSHIYUKI (JP)
KITAWAKI SHUSUKE (JP)
MIMURA MASAHISA (JP)

Application Number:

PCT/JP2001/010507

Publication Date:

June 13, 2002

Filing Date:

November 30, 2001

Export Citation:

Click for automatic bibliography generation Help

Assignee:

TEIJIN LTD (JP)
TANAKA MANABU (JP)
SUZUKI YOSHIYUKI (JP)
KITAWAKI SHUSUKE (JP)
MIMURA MASAHISA (JP)

International Classes:

B24B37/00; B24B37/04; B24B37/20; B24D11/00; B24B37/24; C08G18/08; C08G18/66; D04H1/46; D04H1/48; D06M15/564; D06M15/568; D06M23/10; D06N3/00; G11B5/84; (IPC1-7): B24B37/00; G11B5/84; D06M15/70; D06M15/564

Foreign References:

JP2000237951A	2000-09-05
US5877098A	1999-03-02
JPH11203667A	1999-07-30

Other References: