| http://www.w3.org/ns/prov#value | - FIG. 6 shows an especially preferred embodiment in which the counter roll 4 is provided with a heatable, preferably exchangeable, sleeve 25, which is arranged to surround a roll body 27, preferably to loosely surround the roll body, in order to allow free expansion of the sleeve 25 in relation to the roll body 27, whereby undesired stresses are avoided.
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