Do CDs expire

Answer 1

Spool Multi Media said while "most CD manufacturers aim for high standards", faults still occasionally develop.

"When the CD is made, protective lacquer is dropped onto each disc, which is spun to spread the lacquer to its outer edges," said Mr Varley.

"If this is not done properly, the lacquer may not cover the disc, enabling air to penetrate and oxidise the aluminium. Over time, this rusting effect can ruin the CD."

Philips, which co-developed the compact disc with Sony, said CD deterioration was an isolated problem.

"The reason for the huge success of the compact disc is its robustness, durability and quality," said communications manager Jeannet Harpe.

"Millions and millions of compact discs have been made and problems have only been found with an absolute minority of them. This can happen with any product."

http://news.bbc.co.uk/2/hi/entertainment/3940669.stm