outlet 5 at its lower front side and rear bottom center respectively the inlet 4 is sealed by a sealing member not shown and the outlet 5 is sealed by a water seal 5 1 the interior of the steamer 1 is divided into front and rear rooms 1 2 1 3 by an intermediate wall 1 1 as shown in fig3 a substantially x shaped brace 6 is erected near the intermediate wall 1 1 a plurality of guide rollers 7 are rotatably supported by roller shafts connected to a front wall 1 4 along the brace 6 in other words the guide rollers 7 are also arranged in substantially x shaped configuration the dyed fabric strip 3 is brought into the front room 1 2 via the inlet 3 guided from the outer guide rollers 7 to the inner guide rollers 7 to reach the center of the steamer 1 and then directed outside via the outlet 5 specifically the dyed fabric strip 3 spirally runs from the inner peripheral area of the front room 1 2 toward the center of the steamer 1 in this embodiment all of the guide rollers 7 are set in motion by driving means such as a motor it is also possible to drive every two guide rollers in combination with the driving means the guide rollers 7 are supported on the front wall 1 4 by cantilevers in this embodiment to facilitate initial setting of the dyed fabric strip 3 on the guide rollers 7 in the steamer 1 for this purpose the intermediate wall 1 1 can be opened and closed as desired it is needless to say that the guide rollers may be supported by.