Press plate, a system for compressing pressboard precursor and a method for compressing pressboard precursor
AssigneeHitachi Energy Ltd
InventorsUlf Sand, Rebei Bel Fdhila, Lars Schmidt
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Abstract
A press plate for compressing at least one pressboard precursor, wherein the press plate includes, at least one fluid permeable barrier layer, wherein the at least one barrier layer prevents fibers to pass through the barrier layer, and wherein the at least one barrier layer has a first surface arranged to face a pressboard precursor to be compressed; a rigid press layer, the rigid press layer including passages for fluid transport; and heating means for heating the pressboard precursor(s), a system for compressing at least one pressboard precursor and a method for compressing at least one pressboard precursor.
Claims20
A press plate for compressing at least one pressboard precursor, wherein the press plate comprises,
- at least one fluid permeable barrier layer, wherein the at least one barrier layer prevents fibers to pass through the barrier layer, and wherein the at least one barrier layer has a first surface arranged to face a pressboard precursor to be compressed;
- a rigid press layer, the rigid press layer comprising passages for fluid transport;
- and
- heating means for heating the at least one pressboard precursor.
A method for compressing at least one pressboard precursor, the method comprising:
- arranging at least one pressboard precursor between two press plates , each press plate comprising:
- at least one fluid permeable barrier layer, wherein the at least one barrier layer prevents fibers to pass through the barrier layer, and wherein the at least one barrier layer has a first surface arranged to face a pressboard precursor to be compressed;
- a rigid press layer, the rigid press layer comprising passages for fluid transport;
- and
- a heating device for heating the at least one pressboard precursor;
- forcing the press plates closer to each other, thereby compressing the at least one pressboard precursor;
- and
- heating the pressboard precursor using the heating device to heat the at least one pressboard precursor by thermal conduction.
A press plate for compressing at least one pressboard precursor, wherein the press plate comprises,
- at least one fluid permeable barrier layer, wherein the at least one barrier layer prevents fibers to pass through the barrier layer, and wherein the at least one barrier layer has a first surface arranged to face a pressboard precursor to be compressed;
- a rigid press layer, the rigid press layer comprising passages for fluid transport;
- and
- a heating device for heating the at least one pressboard precursor.
Dependencies are inferred from the claim text.