Process of preparing felted products containing hydratable and non-hydratable fibers

Claim 1

A PROCESS OF MAKING FELTED FIBROUS ARTICLES WHICH COMPRISES MIXING HYDRATABLE AND NON-HYDRATABLE FIBERS IN WATER TO FORM AN AQUEOUS SLURRY, SAID NON-HYDRATABLE FIBERS CONSISTING ESSENTIALLY OF CUT THREAD-LIKE BUNDLES OF STRANDS, EACH STRAND BEING COMPOSED OF A PLURALITY OF GLASS FILAMENTS, THE BUNDLES BEING COATED INDIVIDUALLY WITH 5% TO 25% BY WEIGHT OF AN ADHERENT WATER INSOLUBLE POLYESTER COATING MATERIAL WHICH DOES NOT ADHERE TO THE HYDRATABLE FIBERS, THE WEIGHT RATIO OF SAID HYDRATABLE FIBERS TO SAID NON-HYDRATABLE FIBERS BEING WITHIN THE RANGE OF 1:9 TO 9:1, ADDING 1% TO 25% BY WEIGHT OF THE TOTAL FIBERS OF A WATER INSOLUBLE FUSIBLE RESIN TO SAID SLURRY WHICH ATTACHES ITSELF TO SAID HYDRATABLE FIBERS AND AT THE SAME TIME BINDS SAID HYDRATABLE FIBERS AND SAID POLYESTER COATED NON-HYDRATABLE FILAMENTS TOGETHER, AND THEREAFTER FELTING SAID FIBERS FROM SAID SLURRY.