woven carpeting utilizing a polyurethane adhesive system referring now to the drawings in more detail fig1 illustrates a typical prior art commercial latex based carpet annealing process the greige 5 with top carpet face 10 and bottom primary backing side 15 to which fiber lock adhesive is applied is directed by rollers 20 to place the primary backing side 15 of the greige under trough 25 which is supplied with latex through line 30 the downstream edge of trough 25 serves as a doctor blade 35 in conjunction with plate 40 adjusting the amount of latex applied also serves to force the latex through the primary backing 15 into the fibers further penetration is provided by pressure roller 45 the carpet is then redirected by roller 50 secondary backing 55 is supplied from roll 60 and directed by rollers 65 across wheel roll 70 which rotates in trough 75 filled with additional latex which coats the secondary backing 55 the coated secondary backing 77 is pressed onto the latex coated greige 80 by their travel through ligation rolls 85 the carpet then passes through oven 90 where water is removed from the latex and the latex cures adhering fibers and secondary backing to form a lamellar carpet it will be understood that in most prior art polyurethane backings water is not added to the froth and the resulting polyurethane backing is not u201c blown u201d the only volume in the backing layer having been injected in the.