Polimero - ezio martuscelli
Polimero - ezio martuscelli
Polimero - ezio martuscelli
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IT IS USEFUL TO DIVIDE THE PLASTIC ITEMS OF ARTISTIC<br />
OR HISTORICAL INTEREST ACCORDING TO THE NATURE OF<br />
THE POLYMER COMPONENT. SO WE MAY HAVE OBJECTS<br />
MADE BY :<br />
--- NATURAL PLASTICS ( AS EBONITE, SHELLAC, CASEIN )<br />
--- MAN-MADE PLASTICS ( ARTIFICIAL PLASTICS:<br />
AS CELLULOID, CELLULOSE ACETATES )<br />
--- MAN-MADE PLASTICS ( SYNTHETIC PLASTICS:<br />
AS BAKELITE, PVC, PMMA ECC. )