This physics trick explains cling film Cling film attracts small bits like dust and crumbs because pulling it from the roll creates static electricity. As the plastic rubs against itself and the box, it builds up an electric charge that draws in lightweight particles, especially in dry air where static forms more easily. Since cling film is made from materials like PVC or polyethylene that hold static well. On top of that, cling film has high surface energy, which makes it naturally prone to adh