Selected treatment of fiber blends with resins

Claim 1

A METHOD OF PRODUCING A STOCK BLEND OF A PLURALITY OF DIFFERENT FIBERS, WHICH COMPRISES SEPARATELY FORMING A DIFFERENT DILUTE AQUEOUS STOCK FOR EACH OF SUCH DIFFERENT FIBERS, DEPOSITING A FIBER-TREATING SYNTHETIC RESIN ON THE FIBERS IN EACH OF SAID DIFFERENT STOCKS USING IN EACH CASE A RESIN COMPATIBLE WITH THE FIBERS BUT DIFFERENT FROM THE RESIN USED IN ANY OTHER OF SAID DIFFERENT STOCKS, AND THEN BLENDING THE DIFFERENT STOCKS TOGETHER, THE RESIN DEPOSITION PROCEDURE USED HEREIN TO DEPOSIT A RESIN ON THE FIBERS OF A GIVEN STOCK IN ACCORDANCE WITH THE CLAIMED METHOD BEING A PROCEDURE SELECTIVELY PREFERENTIAL FOR DEPOSITION OF SUCH RESIN ON SUCH FIBERS TO SUCH AN EXTENT THAT CARRYING OUT OF AN OTHERWISE IDENTICAL PROCEDURE EXCEPT THAT SOME OF TH AFORESAID DIFFERENT FIBERS ARE ALSO PRESENT IN THE STOCK WITH SUCH FIBERS WOULD GIVE AN UNFAVORABLE RESULT AS A CONSEQUENCE OF LACK OF UNIFORM PREFERENCE OF SUCH RESIN FOR ALL OF THE FIBERS THEN PRESENT.