relax zone has a pair of spaced apart skewed godet rolls 12 14 generally these rolls are adjustable such that the skew angle can be varied the details of this adjustability are not essential to understanding the present invention since there are several solutions to vary the angle of the rolls these rolls may be the same size different sizes and constructed of the same or different materials a fiber threadline 16 is wrapped multiple times around the rolls 12 14 each roll has an air shield 18 mounted adjacent the rolls 12 14 and are spaced approximately 1 to 5 mm preferably 1 to 2 mm from the rolls the shields 18 may be perforated or solid as known in the art the air shield 18 is supported by a support frame or bar 20 that may be secured to the supporting framework 22 preferably the connection between the frame or bar 20 and the framework 22 includes a swivel joint 24 so that the bar 20 can be positioned at any angle to the framework and preferably parallel to its related skewed roll it is also preferred that the framework 22 includes an elongated slot 26 that the swivel joint is positioned within so that the air shield may be further adjusted relative to the roll it is associated with.