| 摘要 |
This polishing brush (4) has many separate protruding parts (4b) and a support section (4a) on which the protruding parts (4b) are fixed, said protruding parts (4b) and support section (4a) being integrally formed from the same flexible material. Furthermore, side surfaces of the protruding parts (4b) have multiple apertures, the ratio of aperture coverage being 10-70%. Also, the ratio (h/r) between the height (h) of a protruding part and the radius (r) of a circumscribed circle in a cross section of the base part of the protruding part is 1.0-5.0. Consequently, when polishing an object to be polished (1), the side surfaces of the protruding parts are pressed against the object to be polished (1), and the object can be polished by means of a slurry which is held in the apertures formed on the side surfaces of the protruding parts. Not only are the protruding parts (4b) not liable to fall off, but polishing can be carried out with the slurry being securely held in the side surfaces of the protruding parts (4b). |
