Press jacket for press roller
AssigneeVoith Patent GmbH
InventorsDELPHINE DELMAS, UWE MATUSCHCZYK, HERMANN REICHERT, MICHAEL WOKUREK
Life of this patent
Estimating the term…
Abstract
A press jacket for a press roller, in particular for a press roller of a shoe press for dewatering a fibrous material web, in particular a paper, cardboard, tissue or pulp web, or a transport band, in particular for a machine for producing or treating a fibrous material web, in particular a paper, cardboard or tissue machine, includes at least one layer containing polyurethane which contains a polyurethane matrix with a mixture of at least two prepolymers. Each prepolymer is a reaction product of two different polyols with a polyisocyanate.
Claims25
1-12. (canceled)
A press jacket for a press roller of a shoe press for dewatering a fibrous paper, cardboard, tissue or pulp material web or a transport band for a machine for producing or treating a fibrous paper, cardboard or tissue material web, the press jacket or the transport band comprising:
- at least one layer containing polyurethane, said at least one layer containing a polyurethane matrix with a mixture of at least two prepolymers, each prepolymer being a reaction product of two different polyols with a polyisocyanate.
A press jacket for a press roller of a shoe press for dewatering a fibrous paper, cardboard, tissue or pulp material web or a transport band for a machine for producing or treating a fibrous paper, cardboard or tissue material web, the press jacket or the transport band comprising:
- at least one layer containing polyurethane, said at least one layer having a polyurethane matrix with a prepolymer being a reaction product of a polyisocyanate with a mixture of at least two different polyols.
A press jacket for a press roller of a shoe press for dewatering a fibrous paper, cardboard, tissue or pulp material web or a transport band for a machine for producing or treating a fibrous paper, cardboard or tissue material web, the press jacket or the transport band comprising:
- at least one layer containing polyurethane, said at least one layer having a polyurethane matrix with a prepolymer, and said prepolymer being a reaction product of a polyisocyanate or 4,4′-diphenylmethane diisocyanate (MDI), toluene 2,4-diisocyanate (TDI), 3,3′-dimethyl-4,4′-biphenylene diisocyanate (TODD, 1,4-phenylene diisocyanate (PPDI), naphthylene 1,5-diisocyanate (NDI) or 4,4-dibenzyl diisocyanate (DBDI) or with a polyether polycarbonate polyol, containing polyether groups and carbonate groups.
Dependencies are inferred from the claim text.