| 摘要 |
<p>A means and method for treating yarn in preparation for subsequent dyeing wherein the outlet and inlet of a tumbler dryer is connected to an external system having a blower for recirculating air and vapor through the dryer, steam inducing means, heater, condenser and valve means capable of being manipulated while the yarn is continuously tumbled, to relax the yarn fibers at ambient temperature, gradually and uniformally raising the temperature of the yarn by heating and the introduction of live steam to heat-set the fibers, then gradually and uniformly reduce the temperature while condensing the live steam and removing a selected percentage of moisture, and finally further cooling the yarn to ambient temperature including the introduction of ambient air.</p> |
