Abrasive tool making process – material – or composition – Impregnating or coating an abrasive tool
Patent
1986-07-02
1988-04-26
Olszewski, Robert P.
Abrasive tool making process, material, or composition
Impregnating or coating an abrasive tool
51118, 511311, B24B 722
Patent
active
047395893
ABSTRACT:
A process is provided for bilateral abrasive machining of wafer-like workpieces, especially semiconductor wafers. The process uses carrier disks in which the outer periphery on which the driving forces mesh, is made of a material having a tensile strength of at least 100 N/mm.sup.2, while in the area that comes into contact with the workpieces to be machined, there is provided a plastic material having an elasticity modulus of from 1.0 to 8.10.sup.4 N/mm.sup.2.
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IBM Technical Disclosure Bulletin, vol. 15, No. 6, Nov. 1972, Planetary "Free" Wafer Polisher, F. Goetz et al, pp. 1760-1761, 51/118.
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Western Electric, Technical Digest, Nr. 26, Apr. 1977, pp. 11,12, Western ElectricNew York, U.S.; J. T. Callahan et al., "Infrared Heat Wax Method of Mounting Crystal Plates . . . ".
Patents Abstracts of Japan, p. 179 M 76, (Citizen Watch K. K.).
Brehm Gerhard
Haller Ingo
Langsdorf Karl H.
Rothenaicher Otto
Olszewski Robert P.
Wacker-Chemitronic Gesellschaft fur Elektronik-Grundstoff mbH
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