| abstract |
In silicone hydrogel contact lenses, known hydration processes using aqueous solutions to perform mold release have not been efficient. Attempts were made to release silicone lenses using organic solvents, but with high concentration, including safety issues, increased risk of production line downtime, higher cost of release solution, and potential explosion. The use of organic solutions can be a drawback. Therefore, it would be advantageous to find a production method that effectively releases the lens from the mold with little or no use of organic solvents. The present invention includes a method and system for processing a hydrogel biomedical device, such as an ophthalmic lens, using polyethylene glycol to facilitate release of the biomedical device from a split mold. [Selection] Figure 1 |