number of heated rollers from 3 upwards with at least one being on the right hand side frame the surface temperature does not differ from that set out in the other embodiments and also the period of time during which the cotton sliver is in touch with the heated rollers a further embodiment of the invention is illustrated with reference to fig6 raw cotton is supplied in the form of bales 63 and flock or tufts 62 detaching machines are used in order to gradually remove the cotton in the form of tufts which are removed by a moving device the tufts are removed by means of a wheel 61 in a plurality of passes over the bales 63 which are arranged in line and thus there is also comprised a homogeneous blend of a plurality of bales resulting in a uniform product the thickness of the cotton layer which is removed in each pass can be preselected within a rather wide range the tufts are sucked by a vacuum system not shown into a further stage of processing the wheel 61 is provided with a plurality of teeth or other structures for plucking the tufts 62 and which rotate so as to remove the tufts of cotton as the device passes over the bales of cotton 63 the tufts being sucked by means of the vacuum system into section 64 according to the invention there are provided heating devices 65 and 66 with heating means adapted to maintain the surface of the plates in contact with the cotton at a predetermined and preselected temperature as the.