cellophane
Transparent wrapping film made from wood cellulose, widely used for packaging, first produced by Swiss chemist Jacques Edwin Brandenberger in 1908.
Cellophane is made from wood pulp, in much the same way that the artificial fibre rayon is made: the pulp is dissolved in chemicals to form a viscose solution, which is then pumped through a long narrow slit into an acid bath where the emergent viscose stream turns into a film of pure cellulose.
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