Circular stretchers for dry tubular fabrics

Circular stretchers for dry tubular fabrics, which are arranged in front and back of a ring-shaped die in the running direction of the tubular fabrics for purposes of vacuum extraction, and stretch out the tubular fabrics in a circular pattern by means of a spreader ring held within the tubular fabrics completely free of attachment, characterized in that the spreader rings (2, 2′) consist of individual, at least three roller carriers (3, 3′), which are offset on the inner periphery of the tubular fabrics (7), interconnected in a star-shaped pattern and can be adjusted radially to the tubular fabrics (7), and whose outer ends (4, 4′) each have two stretching rollers (5 and 5a, 5′ and 5a′) spaced apart from each other, which stretch the tubular fabrics (7), and the stretching rollers (5 and 5a, 5′ and 5a′) lie against outer rollers (8, 8′) arranged outside the tubular fabrics (7) between the stretching rollers (5 and 5a, 5′ and 5a′), and a centering ring (10, 10′) locked to the roller carriers (3, 3′) of the circular stretchers (1, 1′) is positioned directly in front and back of a ring-shaped die (9), and has a diameter equal to or greater than the inner diameter of the ring-shaped die (9).