Press jacket, its use as well as press roll and shoe press

摘要

The invention relates to a press jacket comprising a plurality of polymer layers which are made from or comprise a polyurethane, the polyurethane being obtainable by reacting an isocyanate with a polyol and a crosslinking agent, one of which, viewed radially with respect to the longitudinal axis of the press jacket, and there is provided a radially inner polymer layer with respect to the longitudinal axis of the press jacket, the polyurethane of the radially outermost polymer layer comprising 1,4- or 1,3-bis (isocyanatomethyl) cyclohexane (H6XDI) as isocyanate and the polyurethane of the radially inner polymer layer 4 , 4'-diphenylmethane diisocyanate (MDI), toluene-2,4-diisocyanate (TDI) or mixtures thereof as isocyanate, polytetramethylene ether glycol (PTMEG) as polyol and 4,4'-methylenebis (3-chloro-2,6-diethylaniline) ( MCDEA), Dimethylthiotoluenediamine (DMTDA) or mixtures thereof as crosslinkers. The invention also relates to a press roll, a shoe press and the use of a press cover in such.