Cast coating process

Claim 1

A PROCESS FOR PRESURE CAST COATING A WEB WITH A THERMOSETTABLE MINERAL COATING COMPRISING, IN COMBINATION, (B) PASSING SAID WEB THROUGH AN ENTRANCE NIP INTO A PRESSURE AREA DEFINED BY THE CONTACT OF AT LEAST TWO MOVING ENDLESS BELTS ONE OF WHICH IS METAL AND ONE OF WHICH IS A POROUS MATERIAL, (B) MAINTAINING A PUDDLE OF LIQUID SOLUTION OF UNSET, SAID THERMOSETTABLE MINERAL COATING AT SAID ENTRANCE NIP BETWEEN SAID WEB AND THE ONE MOVING ENDLESS METAL BELT, SAID POROUS BELT CONTACTING THE UNCOATED WEB SURFACE, (C) HEATING THE MOVING ENDLESS METAL BELT AFTER CONTACT WITH SAID PUDDLE AT SAID ENTRANCE NIP TO A TEMPERATURE AT LEAST EQUIVALENT TO THE BOILING POINT OF THE LIQUID OF SAID LIQUID SOLUTION, (D) MAINTAINING THE COATED WEB WITHIN SAID PRESSURE AREA FOR A PERIOD SUFFICIENT TO CAUSE SAID THERMOSETTABLE MINERAL COATING TO BECOME PRESSURE-CAST ON SAID WEB, (E) SEPARATING SAID AT LEAST TWO MOVING ENDLESS BELTS TO RELEASE THE PRESSURE ON SAID WEB, (F) RECOVERING THE RESULTING THERMOSET PRESSURE CASTCOATED WEB, AND (G) COOLING THE SEPARATED SAID ONE MOVING ENDLESS METAL BELT TO A TEMPERATURE AT LEAST BELOW THE BOILING POINT OF SAID LIQUID PRIOR TO ITS CONTACT WITH SAID PUDDLE.