Treating agents incorporation

Claim 1

A PROCESS FOR MAKING FELTED FIBROUS WEBS COMPOSED OF FIBROUS AND NON-FIBROUS MATERIAL COMPRISING THE STEPY OF: A. MIXING AN AQNEOUS ANIONIC COLLOIDAL DISPERSION OF NON-FIBROUS MATERIAL, WITH A WATER DISPERSION OF FIBER COMPRISING FROM ABOUT ONE-FIFTH OF ONE PER CENT TO ABOUT ONE HUNDRED PERCENT HYDROPHOBIC MATERIAL BASED ON THE WEIGHT OF SAID FIBER; AND IN THE PRESENCE OF SAID MATERIAL B. ADDING AS THE ASSENTIAL PRECIPITATING AGENT FROM ABOUT ONE PART TO ABOUT TWO THOUSAND PARTS PER MILLION PARTS OF DISPERSION AND ADDED NON-FIBROUS MATERIAL OF A PRECIPITATING AGENT COMPRISING AN AQUEOUS SOLUTION OF A WATER-SOLUBLE POLY-N-BASIC POLYMER SALT OF A STRONG BASE AND NOT SURFACE ACTIVE EACH MOLECULAR UNIT HAVING AT LEAST THREE BASIC NITROGEN GROUPS RECURRING ALONG THE POLYMERIC CHAIN, SAID SOLUTION OF POLY-N-BASIC SALT HAVING A PH ABOVE ABOUT 4.3, THEREBY PRECIPITATING SAID DISPERSION; AND C. FORMING A WEB FROM SAID PRECIPITATED DISPERSION, IN WHICH SAID NON-FIBROUS MATERIAL IS INCORPORATED ALONG WITH SAID FIBERS.