Skip to content

More Good to Know


Cellulose Acetate
Duty to Warn

Cellulose Acetate (Mazzucchelli Zyl)  Cellulose acetate is a type of resin derived from cotton fiber and tree pulp dissolved in organic compounds until liquid.  Color is applied then the substance is allowed to cure in sheets or blocks.  Zyl has a warm and luxurious touch, is flexible yet stable at room temperature and is easy to adjust in shape by heating the material to temperatures in excess of 302°.

In 1849 Mazzucchelli SPA. opened in north of Italy in Castiglione Olona a town near Varese, Como and Milan. The founder Santino Mazzucchelli and his son Pompeo begin working Cellulose nitrate sheets in the late 1800. The idea was to transform the sheets in to combs, brushes, buttons and hair ornaments. This entrepreneurs were able to establish a company that would influence the development of bioplastic material world-wide til today. Mazzucchelli grew to become the largest producer of Celluloid Acetate sheets and Cellulose Nitrate sheets worldwide. Today this warm and aesthetically pleasing material is used mostly for making the frames for eyeglasses, followed by hair ornaments, jewellery, stationary and other accessories. The history of Mazzucchelli 1849 Spa. is fascinating being one of the few family company that lasted for 6 generations. The family is still involved in the business and it continues to influence the bio-plastic manufacturing development in Europe, USA and Asia. Through the year many tests were done and many patterns were created with acetate sheets the most famous is the Tortoise shell look made exclusively by Mazzucchelli.

Duty to Warn  Discussions about “duty to warn” often refer to the subject as “the duty to warn law”. There is no actual law requiring the use of shatter resistant lenses, but there are some liability guidelines for companies to follow when dispensing certain lens materials to their consumers.  The duty to warn concept came about because courts began ruling that eyewear consumers must be informed regarding their choices in lens material impact resistance.  A company’s duty to warn responsibility does not mean shatter resistant lenses must be used for every patient.  Certainly, a patient who earns his living as a fireman, requires a higher degree of eye protection than, for instance, an accountant. Children and athletes are also classified as higher risk due to greater or increased exposure to possible accidents or mishaps while wearing their eyewear.  Each company should be proactive in informing it’s clientele and has the discretion to determine which products to sell to individual consumers.