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...lith]] and [[celluloid]], to pass in the '40s to the most common [[plastic resins]] still in use today. A photo gallery is on [[Body_Gallery|this page]].

...re traditional materials such as [[celluloid]] or [[galalith]] are plastic resins, but we will discuss briefly in this section only these new ones that could

...s the dominant material, to switch to the use of different kind of plastic resins.

...e of the their processing. Parts which could be made with injection molded plastic favored the industrialization of the production at much lower prices. Furth

The pen that more than any other is considered the prototype of plastic resins fountain pens, is the famous [[Parker 51]], created in [[1939]], but market

The plastic resins main disadvantage, at least at the time of their introduction, was the impo

...also pens with ordinary steel and gold nibs, passing to the use of plastic resins.

...ew to be able to adapt its production to the use of new materials (plastic resins) and to survive the disposable ballpoint era, and always remaining in the l