a process for continuously bonding staple fibers into an essentially non - twisted yarn comprising the steps of introducing into a fiber arrangement composed of staple fibers an excess of a liquid containing an adhesive in distributed form , squeezing excess liquid out of the fiber arrangement , compacting the fiber arrangement by applying pressure to form a moist slubbing , and for setting the adhesive and transforming the slubbing into a bonded yarn bringing into contact as by feeding the slubbing into a condensing vapor atmosphere . the yarn produced according to the aforementioned process , compared to a yarn set in dry air with the same quantity of adhesive , possesses a higher breaking length and rupture or break elongation and a smoother surface .