Method of manufacturing plastic material having an iridescent color effect

Claim 1

A METHOD OF PRODUCING PEARLY PLASTIC MATERIAL HAVING AN IRIDESCENT COLOR EFFECT WHICH COMPRISES BLENDING A POLYMERIZABLE LIQUID SYNTHETIC RESIN CHARACTERIZED BY A CONTROLLABLE GEL TIME WITH A POLYMERIZATION CATALYST, AGITATING THE MIXTURE UNTIL THE POLYMERIZATION REACTION IS INITIATED, DIVIDING THE RESULTING FLUID MIXTURE INTO PLURALITY OF EQUAL PORTIONS, ADMIXING WITH EACH SEPARATE PORTION A SINGLE COLORED PEARLESCENT PIGMENT OF DIFFERENT COLOR, BRIEFLY AGITATING THE INDIVIDUAL PIGMENT-CONTAINING PORTIONS, THEN SEPARATELY BUT SIMULTANEOUSLY POURING THE INDIVIDUAL PIGMENT-CONTAINING PORTIONS INTO AXIALLY SPACED PORTIONS OF A ROTATING DRUM WHILE ADVANCING THE POURING LOCATION FROM ONE END OF THE DRUM TOWARD THE OTHER, AT LEAST ONCE REPEATING THE POURING OF THE SEPARATE RESIN PORTIONS IN ANOTHER LAYER THEREOF OVER THE PREVIOUSLY POURED LAYER OF RESIN PORTION WITH THE SUCCESSIVE LAYER OF ONE COLOR BEING SUBSTANTIALLY SUPERIMPOSED ON A PREVOIUS LAYER OF THE OTHER COLOR, THE SPEED OF THE DRUM DURING SAID POURING STEPS BEING AT LEAST SUFFICIENT TO DEVELOP ENOUGH CENTRIFUGAL FORCE TO HOLD THE POURED LAYERS IN SUBSTANTIALLY THEIR POSITION OF DEPOSITION, EFFECTING POLYMERIZATION OF THE RESIN WHILE CONTAINING ROTATAION OF THE DRUM UNTIL THE RESIN HAS SET TO A SELF-COHERENT STATE, AND REMOVING THE RESULTING SHEET OF PIGMENTED RESIN FROM THE DRUM.

Claim 2

A METHOD OF PRODUCING PEARLY PLASTIC MATERIAL HAVING AN IRIDESCENT COLOR EFFECT WHICH COMPRISES BLENDING A POLYMERIZABLE LIQUID SYNTHETIC RESIN CHARACTERIZED BY A CONTROLLABLE GEL TIME WITH A POLYMERIZATION CATALYST, AGITATING THE MIXTURE UNTIL THE POLYMERIZATION REACTION IS INITIATED, DIVIDING THE RESULTING FLUID MIXTURE INTO PLURALITY OF EQUAL PORTIONS, ADMIXING WITH EACH SEPARATE PORTION A SINGLE COLORED PEARLESCENT PIGMENT OF DIFFERENT COLOR, BRIEFLY AGITATING THE INDIVIDUAL PIGMENT-CONTAINING PORTIONS, THEN SEPARATELY BUT SIMULTANEOUSLY POURING THE INDIVIDUAL PIGMENT-CONTAINING PORTIONS INTO AXIALLY SPACED PORTIONS OF A ROTATING DRUM WHILE ADVANCING THE POURING LOCATION FROM ONE END OF THE DRUM TOWARD THE OTHER, AT LEAST ONCE REPEATING THE POURING OF THE SEPARATE RESIN PORTIONS IN ANOTHER LAYER THEREOF OVER THE PREVIOUSLY POURED LAYER OF RESIN PORTION WITH THE SUCCESSIVE LAYER OF ONE COLOR BEING SUBSTANTIALLY SUPERIMPOSED ON A PREVOIUS LAYER OF THE OTHER COLOR, THE SPEED OF THE DRUM DURING SAID POURING STEPS BEING AT LEAST SUFFICIENT TO DEVELOP ENOUGH CENTRIFUGAL FORCE TO HOLD THE POURED LAYERS IN SUBSTANTIALLY THEIR POSITION OF DEPOSITION, EFFECTING POLYMERIZATION OF THE RESIN WHILE CONTAINING ROTATAION OF THE DRUM UNTIL THE RESIN HAS SET TO A SELF-COHERENT STATE, AND REMOVING THE RESULTING SHEET OF PIGMENTED RESIN FROM THE DRUM.