Why is cling film so sticky when it touches itself or around bowls but it does not feel sticky at all when it touches our hands?

Question

Why is cling film so sticky when it touches itself or around bowls but it does not feel sticky at all when it touches our hands?

In: Physics

Answer 1

Some things like your hands and glass are prone to losing electrons and generating a mild positive charge. Other things like cling wrap and plastics are prone to capturing electrons and becoming slightly negative. When two things have opposite charges there is an attractive force that brings them together and they adhere to each other. That’s why cling wrap won’t stick to Tupperware but sticks tightly to glass.