Encyclopedia > Cellophane

  Article Content


Cellophane is a thin, transparent sheet made of processed cellulose. Cellulose fibres from wood or cotton are dissolved in alkali to make a solution called viscose, which is then extruded through a slit into an acid bath to reconvert the viscose into cellulose. A similar process, using a hole instead of a slit, is used to make a fibre called rayon.

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 (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.

All Wikipedia text is available under the terms of the GNU Free Documentation License

  Search Encyclopedia

Search over one million articles, find something about almost anything!
  Featured Article
History of Australia

... 7. Thus European settlement began with a troupe of petty criminals, second-rate soldiers, and a crew of sailors. While reasonably well-equipped, little consideration ...