Have you wondered what happens to the wrapper of a biscuit packet once you discard it? It stays in the environment forever. Such wrappers are made of multilayered plastic (MLP). Mostly, MLP packets have two sheets of plastic enclosing a layer of aluminum, but technically MLP can be any material that has at least one layer of plastic.
What makes the problem worse is the sheer volume of MLP waste. Global Alliance for Incinerator Alternatives (GAIA), an international alliance of non-profits and grassroots groups in over 90 countries, undertook a study in May 2018 in 250 sites across 15 cities in India and found that 53 per cent of plastic waste in the cities was MLP.
— source downtoearth.org.in | 05 Oct 2018
Better solution is not to buy anything in these kinds of cover. or try to reduce.