Eric Fife from Suvie shared a comment his mother made about cling wraps saying that she remembered cling wrap sticking much better than it does today. And so, he went to investigate a little on the topic and found the reason why:
The Dow Chemical Company began selling Saran Wrap in 1949, which at that time was made out of PVDC (polyvinylidene chloride). PVDC is a stretchy material that is mostly impervious to air and moisture, which makes it perfect for long-term food preservation. Unfortunately, however, recent research has shown that PVDC is harmful to the environment and, quite possibly, to your health.
Learn more about the effects of PVDC to your health and why cling wrap brands have switched to LDPE on Suvie. - via Cracked
(Image credit: Kakura/CC BY SA 3.0, Wikimedia Commons)