My colleague came to work waving around a new pair of Sony headphone’s he’d bought on the way over, still new in the blister plastic packaging. He was excited because he got such a good deal on them, and tried cutting through the package with a pair of heavy duty scissors. The plastic was unusually strong and was resisting even our most well made scissors (we work in a printing facility, and have lots of types of scissors, all high quality). He switched to the x-acto knife after the scissors were unable to pierce the thick bonded plastic.
In short, this is what happened.