B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
B24B 31/00 (2006.01) B24B 1/00 (2006.01) B24B 9/20 (2006.01) B24B 13/00 (2006.01) C09G 1/02 (2006.01)
Patent
CA 2344660
A method of polishing articles comprising soft acrylic materials is disclosed. The method includes a polishing step and a cleaning step. In the polishing step a receptacle is charged with polishing beads of various sizes, alumina, sodium hydroxide, water, a surfactant, and the articles to be polished, and agitated for a period of time and at a speed sufficient to remove surface irregularities. The polishing step is completed below the glass transition (T g) point of the acrylic article being polished but above 0°C. Following the polishing step, the polished articles are cleaned by rinsing them with water for a period of time to clean the surface of the polished articles.
Cette invention concerne une technique de polissage d'articles contenant des matériaux acryliques tendres. Cette technique comprend deux opérations, l'une de polissage, l'autre de nettoyage. Pour l'opération de polissage, on place dans un récipient des billes à polir de différents calibres, de l'alumine, de l'hydroxyde de sodium, de l'eau, un tensioactif et les articles à polir, ceci pendant une durée et à une vitesse de rotation suffisantes pour éliminer les irrégularités superficielles. L'opération de polissage est menée à une température inférieure au point de transition vitreuse (Tg), mais au-dessus de 0 DEG C. Après le polissage, la surface des articles polis est nettoyée à l'eau.
Cremeans Bryan L.
Pickett Teresa L.
Tucker Jennia
Alcon Laboratories Inc.
Smart & Biggar
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