The history of plastic begins in the 19th century, when, between 1861 and 1862, the Englishman Alexander Parkes, developing the studies on cellulose nitrate, isolates and patents the first semi-synthetic plastic material, which christens Parkesine (better known later like Xylonite). It is a first type of celluloid, used for the production of handles and boxes, but also of flexible products such as cuffs and shirt collars.

The first true affirmation of the new material, however, was only a few years later, when in 1870 the American brothers Hyatt patented the celluloid formula, with the aim of replacing the expensive and rare ivory in the production of billiard balls, except meeting an immediate success with dentists as a material to be used for dental impressions. From a chemical point of view, the celluloid was still cellulose nitrate and was unsuitable for being processed with high temperature molding techniques as it is…