what is static cling film?

Answer 1

it is film that automatically adheres to another surface such as tinting film you use to darken your car windows.

Answer 2

Plastic wrap, known as cling-film in the United Kingdom, is a thin polymer material, approximately 0.13mm (0.003in) thick, typically used for sealing food items in containers to keep them fresh.

The wrap, typically sold on rolls in boxes with a cutting edge, clings to many smooth surfaces and can thus remain tight over the opening of a container with no adhesive or other devices.