Project #1
To find an acetone substitute for removing Essilor yellow ink
05/31/2002
polycarbonate lenses
Used for prescription lenses to be worn by customer
3-4 x 1/2 inches
Small
Less than 1 lb
Lenses are soaked in Di water, then acetic acid, caustic solution then another DI rinse
Packing for shipment
100-1000
Acetone, Acetic acid
Use of acetone
to remove ink from lenses
No relation
No relation
Three trials were conducted for first project. The first trial looked at nine products were selected from the lab's databases based on supplied information. The four successful products will used in the second and third trials. All products were able to remove all of the ink in less than 1 minute during the manual wipe cleaning. Loctite 7360 was the fastest, removing the ink within 17 seconds. None of the products dissolved the ink from the lenses within the 5 minute soak cleaning.