http://www.comcast.net/articles/news-science/20081022/SCI.Scotch.Tape.Surprise/
Yes, it appears that, when in a vacuumed chamber, Scotch tape emits X-rays as you peel the tape off of its roll.
This newly found discovery is said to spark many new ideas and inventions, such as obvious as an inexpensive X-ray machine.
Scotch tape is still safe to use in non-vacuumed spacing.
None.