CD-R media durability issue

[DenisB]

I am trying to find information about the use of slim cases to store CD-R. Is it possible that the physical contact between the CD and the plastic casing would cause some chemical reaction in the long run or in certain conditions?

I burn hundreds of CD-R of data for my clients and I would like to confirm that the use of slim cases will not have any effect on the life time of the CDs.

I would be grateful for any information on this issue.

Denis