Advanced dewatering system
AssigneeVoith Patent GmbH
InventorsThomas Thoroee Scherb, Jeffrey Herman, Luiz Carlos Silva, Hubert Walkenhaus
Life of this patent
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Abstract
System for drying a tissue or hygiene web. The system includes a permeable structured fabric carrying the web over a drying apparatus. A permeable dewatering fabric contacts the web and is guided over the drying apparatus. A mechanism is utilized for applying pressure to the permeable structured fabric, the web, and the permeable dewatering fabric at the drying apparatus. This Abstract is not intended to define the invention disclosed in the specification, nor intended to limit the scope of the invention in any way.
Claims75
A belt press for a paper machine, the belt press comprising:
- a roll comprising an exterior surface;
- a permeable belt comprising a first side and being guided over a portion of said exterior surface of said roll;
- said permeable belt being of woven construction and having a tension of at least approximately 30 KN/m;
- said first side having an open area of at least approximately 25% and a contact area of at least approximately 10%,
- wherein a web travels between the permeable belt and the exterior surface of the roll.
A fibrous material drying arrangement comprising:
- an endlessly circulating permeable extended nip press (ENP) belt guided over a roll;
- said ENP belt being subjected to a tension of at least approximately 30 KN/m;
- and
- said ENP belt comprising a side having an open area and a contact area,
- wherein a web travels between the ENP belt and the roll, and
- wherein said open area is between approximately 15% and approximately 50%, and said contact area is between approximately 50% and approximately 85%.
A permeable extended nip press (ENP) belt which is capable of being subjected to a tension of at least approximately 30 KN/m, said permeable ENP belt comprising:
- at least one side comprising an open area and a contact area,
- wherein said open area is between approximately 15% and approximately 50%, and said contact area is between approximately 50% and approximately 85%.
A belt press for a paper machine, the belt press comprising:
- a vacuum roll comprising an exterior surface and at least one suction zone;
- a permeable belt comprising a first side and being guided over a portion of said exterior surface of said vacuum roll;
- said permeable belt being of a woven construction and having a tension of at least approximately 30 KN/m;
- and
- said first side having an open area of at least approximately 25% and a contact area of at least approximately 10%,
- wherein a web travels between the permeable belt and the exterior surface of the roll.
Dependencies are inferred from the claim text.