Process for the manufacture of a chemically bonded non-woven fiber material in sheet form

Claim 1

A PROCESS FOR THE MANUFACTURE OF CHEMICALLY BONDED NON-WOVEN FIBER MATERIAL IN SHEET FROM, IN WHICH A POLYMER MATERIAL IN THE FROM OF A SOLUTION OR DISPERSION IS INCORPORATED IN THE BASE MATERIAL AND THE POLYMER MATERIAL IS COAGULATED, WHICH COMPRISES IMPREGNATING THE FIBER MATERIAL WITH A LIQUID BINDER SYSTEM CONTAINING A. AN AQUEOUS DISPERSION OF A SYNTHETIC THERMOPLASTIC ELASTOMER, B. AN AQUEOUS SOLUTION OF A WATER-SOLUBLE FILLER SELECTED FROM THE GROUP CONSISTING OF HEXAMETHYLENE-TETRAMINE, AMMONIUM CHLORIDE, AMMONIUM CARBONATE, MAGNESIUM CHLORIDE AND MIXTURES THEREOF, IN AN AMOUNT OF 20 TO 110 PERCENT BY WEIGHT OF THE SOLIDS CONTENT OF SAID ELESTOMER, C. AN AQUEOUS SOLUTION OF AT LEAST ONE HYDROPHILIC COMPOUND, IN AN AMOUNT OF 5 TO 20 PERCENT BY WEIGHT OF THE SOLIDS CONTENT OF SAID ELASTOMER, D. AN AQUEOUS DISPERSION OF A FAT-LIKE, HYDROPHOBIC COMPOUND HAVING A CARBON CHAIN IN THE RANGE OF 10 TO 24 CARBON ATOMS AND CONTAINING REACTIVE GROUPS SELECTED FROM THE GROUP CONSISTING OF ETHYLENE-UREA, TRIMETHYLOL UREA, CARBOXYL, HYDROXYL AND AMINO GROUPS, IN AN AMOUNT OF 5 TO 10 PERCENT BY WEIGHT OF SAID HYDROPHILIC COMPOUND, E. AN AQUEOUS SOLUTION OF AN AMINOPLAST PRECONDENSATE CROSSLINKING COMPONENT, IN AN AMOUNT OF 10 TO 100 PERCENT BY WEIGHT OF SAID HYDROPHILIC COMPONENT AND F. AN INORGANIC CROSS-LINKING CATALYST, HEATING SAID IMPREGNATED FIBER MATERIAL TO THE COAGULATION TEMPERATURE OF SAID ELASTOMER, HEATING SAID IMPREGNATED FIBER MATERIAL TO A TEMPERATURE OF 100* TO 180*C FOR A PERIOD OF 30 SECONDS TO 45 MINUTES TO CROSS-LINK THE CROSS-LINKABLE COMPONENTS OF SAID SYSTEM, WASHING SAID IMPREGNATED FIBER MATERIAL WITH WATER TO REMOVE SAID FILLER AND DRYING SAID IMPREGNATED FIBER MATERIAL.