Method and an apparatus for manufacturing a fiber web...

Drying and gas or vapor contact with solids – Process – Mechanical liquid removal

Reexamination Certificate

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C034S306000, C034S453000

Reexamination Certificate

active

07428786

ABSTRACT:
A method for manufacturing a fiber web having a three-dimensional surface structure and a strength. The method includes the steps of pre-imprinting the fiber web, pressing the fiber web and forming the fiber web. The pre-imprinting step pre-imprints the fiber web at a dry content of less than 25% with an imprinting band using a first pressure field. The pressing step presses the fiber web onto the imprinting band using a second pressure field. The pressing step further dewaters and dries the fiber web fixing the three-dimensional surface structure and the strength. The forming step forms the fiber web on the imprinting band.

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patent: WO 01/18307 (2007-03-01), None

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