GB1456375A - Plant for steaming and fixing dyes - Google Patents

Abstract

1456375 Plant for steaming and fixing dyes F CONTI 19 Dec 1973 [29 May 1973] 58954/ 73 Heading D1L For steaming and fixing dyes at high or low temperature on printed or dyed fabrics a suitable plant comprises, as shown in Fig. 1, a storage chamber 1 having an inlet 3 and outlet 4 for the fabric 5, means for dispersing the fabric in the form of suspended folds side by side and for moving them on a number of freely movable rod elements 16 along a perimental closed loop path, means for maintaining the atmosphere inside the chamber at controlled humidity and temperature conditions and means for preheating and humidifying the fabric in chamber 9 before its introduction into the zone of controlled atmospheric conditions. In the preheating chamber 9 the water film which runs down the wall 12 is evaporated by the heating elements 13 and the fabric consequently becomes heated and humidified. The fabric is pulled out of the preheating chamber by the roller 15 to which it adheres because of the suction created by the exhaust fan (40), thus a fold is created downstream of the roller 15, which becomes elongated downwards until a rod element 16 taken up by hooks 27 at the end of guide 18 comes into contact with the lower face of the fabric. The fabric is thus raised by the rod element which is released from the hooks 27 when its ends (19) have entered the guides 17. During the free rolling motion of each element 166 on the guide 17, the fabric is dragged by friction by the elements 16 in such a manner that the forward movement of the folds is accompanied by a partial sliding in the vertical direction of the fabric which thus passes through any thermal and humidity gradients in the chamber. The element 16 is transferred by the hook 31 to the highest end of the guide 18 and can thus return to the start of its path by rolling freely on it.