Composite plastic article with a cellulose acetate component

Claim 1

AS A NEW ARTICLE OF MANUFACTURE, A SHAPED PLASTIC STRUCTURE COMPRISING IN COMBINATION A FIRST SHAPED PLASTIC AND A SECOND SHAPED PLASTIC IN CONTACT WITH EACH OTHER IN SAID SHAPEED PLASTIC STRUCTURE, SAID FIRST SHAPE PLASTIC BEING SELECTED FROM THE GROUP CONSISTING OF POLYSTYRENE, POLYMETHYL ACRYLATE, POLYETHYL ACRYLATE, POLYPROPYL ACRYLATE, POLYISOPROPYL ACRYLATE, POLYBUTYL ACRYLATE, POLYISOBUTYL ACRYLATE, POLYMETHYL METHACRYLATE, POLYETHYL METHACRYLATE, POLYPROPYL METHACRYLATE, POLYISOPROPYL METHACRYLATE, POLYBUTYL METHACRYLATE AND POLYISOBUTYL METHACRYLATE, AND SAID SECOND SHAPED PLASTIC CONSISTING ESSENTIALLY OF CELLULOSE ACETATE HAVING AN ACETYL VALVE OF FROM ABOUT 57% TO 62.5% COMBINED ACETIC ACID CONTENT AND AN INTRINSIC VISCOSITY OF FROM ABOUT 1.6 TO 2 AND FROM ABOUT 15% TO ABOUT 40% BY WEGHT, BASED ON SAID CELLULOSE ACETATE OF A PLASTICIZER SELECTED FROM THE GROUP CONSISTING OF BUTYL BENZYL PHTHALATE, ETHYLENE GLYCOL DIBENZOATE, DIETHYLENE GLYCOL DIBENZOATE, TRIETHYLENE GLYCOL DIBENZOATE, PROYLENE GLYCOL DIBENZOAT AND DIPROPYLENE GLYCOL DIBENZOAT AND MIXTURE THEREOF, SAID SECOND SHAPED PLASTIC BEING FRE OF ANY TENENCY TO CAUSE CRAZING OF SAID FIRSTSHAPED PLASTIC.