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Cellophane's impermeability to air, grease and bacteria makes it useful for food packaging.
Cellulose film has been manufactured continuously since the mid- 1930s and is still used today. As well as packaging a variety of food items, there are also industrial applications, such as a base for self-adhesive tapes like Sellotape and Scotch Tape, a semi-permeable membrane in certain types of battery, and as a release agent in the manufacture of fibreglass and rubber products.