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US 8,789,289 B2Granted
Method and an apparatus for manufacturing a three-dimensional surface structure web
AssigneeVoith Patent GmbH
InventorsJeffrey Herman, David A. Beck, Thomas Thoröe Scherb
Life of this patent
Estimating the term…
Abstract
A method and apparatus for manufacturing a fiber web, in particular a web of tissue or hygiene material, provided with a three-dimensional surface structure, whereby the fiber web is pressed at a dry content of <35% onto an imprinting fabric by way of a first pressure field and is thereby pre-imprinted and the fiber web is guided through at least one other pressure field, and at least one of dewatering and drying the fiber web.
Claims73
A method for manufacturing a fiber web having a three-dimensional surface structure, comprising:
- pressing the fiber web at a dry content of less than approximately 35% onto an imprinting fabric by a suction element arranged on a surface of the imprinting fabric remote from the fiber web to produce a first pressure field to suck the fiber web into a surface structure of the imprinting fabric to dewater the fiber web in a first direction;
- guiding the fiber web through at least one other pressure field against a drying cylinder to at least one of dewater and dry the fiber web;
- and
- guiding a clothing, the imprinting fabric, and the fiber web located between the clothing and the imprinting fabric over a dewatering arrangement having at least one roll, such that the clothing is in contact with the at least one roll and the dewatering occurs in a direction opposite the first direction.
1 more element
A method for manufacturing a fiber web having a three-dimensional surface structure, comprising:
- pressing the fiber web at a dry content of less than approximately 35% onto an imprinting fabric by a suction element arranged on a surface of the imprinting fabric remote from the fiber web to produce a first pressure field to suck the fiber web into a surface structure of the imprinting fabric, thereby imprinting the web;
- guiding the fiber web through at least one other pressure field to at least one of dewater and dry the fiber web;
- and
- guiding a clothing, the imprinting fabric, and the fiber web located between the clothing and the imprinting fabric over at least one suction roll, such that the clothing is in contact with the at least one suction roll,
- wherein the at least one suction roll produces the at least one other pressure field to dewater the fiber web, and the clothing comprises a SPECTRA membrane attached to an air distribution layer, said SPECTRA membrane being used with a conventional woven fabric, said woven fabric arranged between said SPECTRA membrane and a through flow cylinder.
2 more elements
A method for manufacturing a fiber web having a three-dimensional surface structure, comprising:
- pressing the fiber web at a dry content of less than approximately 35% onto an imprinting fabric by a suction element arranged on a surface of the imprinting fabric remote from the fiber web to produce a first pressure field to suck the fiber web into a surface structure of the imprinting fabric, thereby imprinting the web;
- guiding the fiber web through at least one other pressure field to at least one of dewater and dry the fiber web;
- and
- guiding a clothing, the imprinting fabric, and the fiber web located between the clothing and the imprinting fabric over at least one suction roll, such that the clothing is in contact with the at least one suction roll,
- wherein said dewatering further includes using a woven fabric along with said anti-rewetting membrane, and
- wherein said anti-rewetting membrane is used without an additional fabric.
3 more elements
A method for manufacturing a fiber web having a three-dimensional surface structure, comprising:
- pressing the fiber web at a dry content of less than approximately 35% onto an imprinting fabric by a suction element arranged on a surface of the imprinting fabric remote from the fiber web to produce a first pressure field to suck the fiber web into a surface structure of the imprinting fabric, thereby imprinting the web;
- guiding the fiber web through at least one other pressure field to at least one of dewater and dry the fiber web;
- and
- guiding a clothing, the imprinting fabric, and the fiber web located between the clothing and the imprinting fabric over at least one suction roll, such that the clothing is in contact with the at least one suction roll,
- wherein the at least one suction roll forms, in combination with at least three additional rolls, a pressure space containing the at least one other pressure field, and the method further comprises driving water out of the fiber web by way of a gas under pressure in the pressure space, the fiber web being guided together with the imprinting fabric at least once through the pressure space, into which said gas is fed, and
- further comprising guiding the fiber web with said imprinting fabric between said clothing and at least one additional membrane through said pressure space, said clothing and said at least one additional membrane including at least one of an air distribution membrane and an anti-rewetting membrane.
3 more elements
A method for manufacturing a fiber web having a three-dimensional surface structure, comprising:
- suctioning the fiber web at a dry content of less than approximately 35% onto an imprinting fabric by a suction element arranged on a surface of the imprinting fabric remote from the fiber web to produce a first pressure field to suck the fiber web into a surface structure of the imprinting fabric to dewater the fiber web in a first direction;
- guiding the fiber web through at least one other pressure field directed against a drying cylinder to at least one of dewater and dry the fiber web;
- and
- guiding a clothing, the imprinting fabric, and the fiber web located between the clothing and the imprinting fabric over at least one alternate drying apparatus comprising a counter device comprising an open surface, wherein the clothing contacts the open surface of the counter device and the dewatering occurs in a direction opposite the first direction.
1 more element
Dependencies are inferred from the claim text.