Method of making decorative panels

Claim 1

A METHOD OF PREPARING A LIGHT TRANSMITTING AND LIGHT DIFFUSING CAST-PLASTIC PANEL OF A SYNTHETIC RESIN COMPRISING THE STEPS OF CASTING A UNITARY LAYER OF LIGHT TRANSMITTING LIQUID WYNTHETIC RESIN INCLUDING A REINFORCING WEB THEREIN; MECHANICALLY CREASING A THIN SHEET OF FILM; OBTAINING SAID SHEET IN PARTIALLY SPREAD FORM; SAID CREASING STEP BEING PERFORMED IN SUCH A WAY THAT SAID PARTIALLY SPREAD SHEET HAS A MULTIPLICITY OF NONUNIFORM ELEVATED AND DEPRESSED PARTS A LARGE PROPORTION OF WHICH ARE IN THE FORM OF SHARP CREASES PRESENTING MULTIPLE, IRREGULAR, RANDOM JEWEL-LIKE AND PRISMLIKE FACETS IN A VIEW NORMAL TO SAID FILM;UTILIZING SAID SHEET TO PROVIDE AT LEAST THE UPPER-MOST MOLD SURFACE; PLACING SAID MOLD SURFACE AND THE UPPER FACE OF SAID LAYER OF LIQUID RESIN IN LIQUID-DEFORMING CONTACT WITH ONE ANOTHER OVER THEIR ENTIRE JUXTAPOSED FACES IN A MANNER SUCH THAT THERE ARE SUBSTANTIALLY NO AIR BUBBLES BETWEEN THE TWO SAID RAISED PARTS OF SUBSTANTIAL SIZE AND CONTAINING SUBSTANTIALLY ONLY RESIN AND BEING FREE OF ANY PART OF SAID REINFORCING WEB; SAID DEPRESSED PARTS RESTING UPON SAID WEB; AND CURING SAID RESIN WHILE MAINTAINING SAID CONTACT, WHEREBY A PANEL IS OBTAINED HAVING A FACE CONFORMING IN SHAPE TO SAID SHEET OF FILM, AND SAID RAISED AND DEPRESSED PORTIONS DIFFUSE, REFRACT, AND DIFFRACT LIGHT PASSING THROUGH SAID PANEL.

Claim 2

A METHOD OF PREPARING A LIGHT TRANSMITTING AND LIGHT DIFFUSING CAST-PLASTIC PANEL OF A SYNTHETIC RESIN COMPRISING THE STEPS OF CASTING A UNITARY LAYER OF LIGHT TRANSMITTING LIQUID WYNTHETIC RESIN INCLUDING A REINFORCING WEB THEREIN; MECHANICALLY CREASING A THIN SHEET OF FILM; OBTAINING SAID SHEET IN PARTIALLY SPREAD FORM; SAID CREASING STEP BEING PERFORMED IN SUCH A WAY THAT SAID PARTIALLY SPREAD SHEET HAS A MULTIPLICITY OF NONUNIFORM ELEVATED AND DEPRESSED PARTS A LARGE PROPORTION OF WHICH ARE IN THE FORM OF SHARP CREASES PRESENTING MULTIPLE, IRREGULAR, RANDOM JEWEL-LIKE AND PRISMLIKE FACETS IN A VIEW NORMAL TO SAID FILM;UTILIZING SAID SHEET TO PROVIDE AT LEAST THE UPPER-MOST MOLD SURFACE; PLACING SAID MOLD SURFACE AND THE UPPER FACE OF SAID LAYER OF LIQUID RESIN IN LIQUID-DEFORMING CONTACT WITH ONE ANOTHER OVER THEIR ENTIRE JUXTAPOSED FACES IN A MANNER SUCH THAT THERE ARE SUBSTANTIALLY NO AIR BUBBLES BETWEEN THE TWO SAID RAISED PARTS OF SUBSTANTIAL SIZE AND CONTAINING SUBSTANTIALLY ONLY RESIN AND BEING FREE OF ANY PART OF SAID REINFORCING WEB; SAID DEPRESSED PARTS RESTING UPON SAID WEB; AND CURING SAID RESIN WHILE MAINTAINING SAID CONTACT, WHEREBY A PANEL IS OBTAINED HAVING A FACE CONFORMING IN SHAPE TO SAID SHEET OF FILM, AND SAID RAISED AND DEPRESSED PORTIONS DIFFUSE, REFRACT, AND DIFFRACT LIGHT PASSING THROUGH SAID PANEL.