Translations:Resina plastica/1/en

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We call in a generic way plastic resin the plurality of materials characterized by injection mold processing (some of which, historically used for fountain pens, have been reported in the side table). In fact also more traditional materials such as celluloid or galalith are plastic resins, but we will discuss briefly in this section only these new ones that could processed by injection mold, that were used in fountain pen productions from the 40s until around the 60s.