Process and device for treatment of a traveling yarn with a gas- or steam-creating treatment medium

摘要

A process for treating a yarn with a gas- or steam-creating medium includes traveling the yarn between a pair of elongate yarn guide elements in a pressure chamber portion of a yarn treatment chamber that is substantially sealed off to the environment and is under an overpressure. The process further includes drawing the yarn through an additional yarn guide element. The cross section of the one pair of elongate yarn guide elements and the cross section of the additional yarn guide element correspond to the thickness (titer) of the yarn traveling through these yarn guide elements such that the yarn travels through these yarn guide elements in a substantially friction-free manner and the one pair of elongate yarn guide elements and the additional yarn guide element operate in cooperation with the yarn treatment chamber such that the yarn treatment chamber is substantially sealed off against loss of pressure.