Moldable tablet

Claim 1

A MOLDABLE TABLET ADAPTED TO BE USED IN THE PREPARATION OF ELECTROTYPES AND COMPRISING TWO LAYERS OF THERMOPLASTIC SYNTHETIC RESINOUS MATERIAL MOLDABLE AT ELEVATED TEMPERATURE AND PRESSURE, BOTH LAYERS HAVING SUBSTANTIALLY THE SAME UNIFORM THICKNESS THROUGHOUT THEIR AREAS, AND A CORE LAYER OF SOFT SHEET ALUMINUM DEFORMABLE SO AS ROUGHLY TO FOLLOW THE CONTOUR OF THE MOLDED FACE OF THE TABLET AFTER MOLDING WHEN SAID TABLET IS MOLDED UNDER CONDITIONS OF TEMPERATURE AND PRESSURE AT WHICH SAID THERMOPLASTIC SYNTHETIC RESINOUS MATERIAL IS MOLDABLE TO THE IMAGE OF AN ELECTROTYPE, SAID CORE LAYER BEING SANDWICHED TIGHTLY BETWEEN SAID LAYERS OF SYNTHETIC RESINOUS MATERIAL, SAID METAL LAYER HAVING A THICKNESS BETWEEN ABOUT 0.001 INCH AND 0.008 INCH, AND SAID LAYERS OF SYNTHETIC RESINOUS MATERIAL EACH HAVING A THICKNESS BETWEEN ABOUT 0.010 INCH AND ABOUT 0.028 INCH AND BEING UNITED INTO A UNITARY STRUCTURE WITH SAID CORE LAYER WHEREBY SAID LAYERS OF RESINOUS MATERIAL ARE SECURED AGAINST SUBSTANTIAL LATERAL DISPLACEMENT WITH RESPECT TO SAID ALUMINUM LAYER WHEN EXPOSED TO A TEMPERATURE AS HIGH AS 150* F. AT ATMOSPHERIC PRESSURE.