Cleaning method for high precision molding components

Cleaning and liquid contact with solids – Processes – Including forming a solidified or hardened coating for cleaning

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134 6, 134 8, 134 10, B08B 304

Patent

active

058109412

ABSTRACT:
A novel method for cleaning high precision optical equipment. The method involves applying a curable coating to an optical or optical forming surface which has been contaminated with undesirable foreign matter, then allowing the coating to dry to form a resilient dried film, and then removing the dried film to remove along therewith the undesirable foreign debris which has contaminated the optical surface. Preferably, the curable coating is formed from an aqueous polyurethane emulsion. The method allows foreign debris to be removed with a very high degree of reliability and completeness, so that when the method is used with compact disc stampers, the stampers are restored to a like new condition.

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patent: 5509969 (1996-04-01), Grawe

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