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1. WO2000040370 - CHILLED TEMPERATURE POLISHING METHOD FOR SOFT ACRYLIC ARTICLES

Publication Number WO/2000/040370
Publication Date 13.07.2000
International Application No. PCT/US1999/028517
International Filing Date 02.12.1999
Chapter 2 Demand Filed 22.05.2000
IPC
B24B 1/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
1Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
B24B 9/20 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
9Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
02characterised by a special design with respect to properties of materials specific to articles to be ground
20of plastics
B24B 13/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
13Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
B24B 31/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
31Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work or the abrasive material is loose; Accessories therefor
C09G 1/02 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
GPOLISHING COMPOSITIONS OTHER THAN FRENCH POLISH; SKI WAXES
1Polishing compositions
02containing abrasives or grinding agents
CPC
B24B 1/00
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
1Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
B24B 13/0006
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
13Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
0006for intraocular lenses
B24B 13/0025
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
13Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
0025for contact lenses
B24B 31/00
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
31Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
B24B 9/20
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
9Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
02characterised by a special design with respect to properties of materials specific to articles to be ground
20of plastics
C09G 1/02
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
GPOLISHING COMPOSITIONS OTHER THAN FRENCH POLISH; SKI WAXES
1Polishing compositions
02containing abrasives or grinding agents
Applicants
  • ALCON LABORATORIES, INC. [US/US]; R & D Counsel, Q-148 6201 South Freeway Fort Worth, TX 76134-2099, US
Inventors
  • CREMEANS, Bryan, L.; US
  • PICKETT, Teresa, L.; US
  • TUCKER, Jennia; US
Agents
  • RYAN, Patrick, M. ; R & D Counsel, Q-148 6201 South Freeway Fort Worth, TX 76134-2099, US
  • KELLER, Günter; Lederer, Keller & Riederer Prinzregentenstrasse 16 D-80538 München, DE
Priority Data
60/114,92705.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CHILLED TEMPERATURE POLISHING METHOD FOR SOFT ACRYLIC ARTICLES
(FR) TECHNIQUE DE POLISSAGE A BASSE TEMPERATURE POUR ARTICLES EN ACRYLIQUE TENDRE
Abstract
(EN)
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 (Tg) 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.
(FR)
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 °C. Après le polissage, la surface des articles polis est nettoyée à l'eau.
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