fabric 1 to the number of revolutions of the twisting organ 3 around the twisting axis the number of twists can be reached which are suitable for submitting the same fabric to an efficacious wringing for dehydration purposes the efficiency of wringing is limited by the value of the tension the fabric can withstand and which has to be applied to the fabric 1 along the stretch between the roll pairs 2 and 6 this tension which depends on the nature of the fabric is essential in order to counteract the effect of shortening of the fabric 1 due to the twist formed therein in fact in the absence of such a tension entanglement of the fabric would occur tests indicate that the number of applicable twists is first of all a function of the weight of the fabric 1 per linear meter as well as of the nature and composition of the fabric 1 in general the maximum applicable number of twists per meter increases with decreasing weight per linear meter of the fabric 1 according to the invention the twisted fabric 1 can be submitted to a step of centrifugation which causes a further efficacious dehydration of the fabric for that purpose some forms of practical embodiment of the apparatus according to the present invention are shown in fig2 5 for exemplifying purposes in.