FIBROUS WEB DEWATERING APPARATUS AND METHOD

The present disclosure relates to a vacuum dewatering apparatus comprising a vacuum box disposed opposite of a steam box where the steam box comprises a bottom plate having a substantially linear portion and a curvilinear portion. A plurality of apertures are disposed along at least a portion of the...

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Bibliographische Detailangaben
Hauptverfasser:	BESAW, Craig, Steven, RUDOLPH, Jason, Michael, NELSON, Samuel, August, RAMAZANI-REND, Reza, SEYMOUR, Robert, James, HASSMAN, Mark, John, JENN, Thomas, McLachlan, CHAI, Lucia, Yiyi
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	METHODS OF PRODUCING PAPER THEREON PAPER-MAKING PAPER-MAKING MACHINES PRODUCTION OF CELLULOSE TEXTILES
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Beschreibung
Zusammenfassung:	The present disclosure relates to a vacuum dewatering apparatus comprising a vacuum box disposed opposite of a steam box where the steam box comprises a bottom plate having a substantially linear portion and a curvilinear portion. A plurality of apertures are disposed along at least a portion of the curvilinear portion to permit the transmission of steam. In a preferred embodiment, the curvilinear portion is adjacent to the trailing edge and the linear portion is adjacent to the leading edge of the apertured bottom plate. Further, at least a portion of the apertures are aligned opposite the vacuum box which acts to remove the steam. The vacuum dewatering apparatus of the present invention enables the use of high levels of steam improving vacuum dewatering and improving drying efficiency.