Apparatus and a process for drying a paper web
AssigneeStfi
InventorHannes Vomhoff
Life of this patent
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Abstract
An apparatus for drying a fibre web of paper or paperboard is provided. The apparatus includes an adjustable heated press nip including at least one pressure device. The pressure device includes a roll, supporting one side of the web and at least two pressure shoes opposite the device and acting on the other side of the web. Each of the pressure shoes include means for providing an individual pressure respectively on the web. At least one intermediate conduit is arranged in-between the pressure shoes. The intermediate conduit includes means forming an additional individual pressure zone on the web.
Claims10
An apparatus for drying a fibre web of paper or paperboard, comprising an adjustable heated press nip including at least one pressure device, comprising a roll, supporting one side of the web and at least two pressure shoes opposite said device and acting on the other side of the web, each of the pressure shoes including means for providing an individual pressure respectively on the web, wherein at least one intermediate conduit is arranged in-between said pressure shoes, and wherein the intermediate conduit includes means forming an additional individual pressure zone on the web.
A process for drying a fibre web of paper or paperboard, wherein the web is subjected to a drying treatment in an apparatus having an adjustable heated press nip formed by arranging at least one pressure device, comprising a roll, supporting one side of the web and arranging at least two pressure shoes opposite said device and acting on the other side of the web, each of the pressure shoes including means for providing an individual pressure respectively on the web during the drying treatment, comprising the steps of arranging at least one intermediate conduit in-between said pressure shoes, providing the intermediate conduit with means serving as an additional individual pressure zone acting towards the web, and subjecting the web to an additional pressure during the drying treatment.
Dependencies are inferred from the claim text.