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
Method for manufacturing a fiber web, in which water is driven out of the fiber web. The method includes displacement dewatering using a clothing arrangement. The clothing arrangement, in the direction of a displacement fluid flow, includes: a membrane; an imprinting fabric, followed by the fiber web; and an anti-rewet fabric. The clothing arrangement is, in the direction of the displacement fluid flow, followed by a roll.
Claims104
A method for manufacturing a fiber web in which water is driven out of the fiber web, comprising the step of displacement dewatering using a clothing arrangement, which in the direction of a displacement fluid flow, includes the following elements:
- a membrane;
- an imprinting fabric, followed by the fiber web;
- and an anti-rewet fabric, said clothing arrangement being, in the direction of the displacement fluid flow, followed by a vented roll having an open surface.
A method for dewatering a fiber web comprising the steps of:
- driving water of the fiber web by way of gas pressure using a gas press;
- guiding the fiber web together with an imprinting fabric at least once through a pressure space which is bounded by at least four rolls arranged in parallel and into which said gas is fed, the fiber web being guided together with said imprinting fabric between at least two membranes through said pressure space, said at least two membranes including at least one of an air distribution membrane and an anti-rewetting membrane.
An apparatus for manufacturing a fiber web with a three-dimensional surface structure, comprising:
- an imprinting fabric;
- a first pressure field by which the fiber web is pressed into said imprinting fabric and is thereby pre-imprinted, the fiber web being pressed at a dry content, said dry content being less than approximately 35%;
- and at least one further pressure field through which the fiber web is guided for at least one of dewatering and drying the fiber web.
An apparatus for dewatering a fiber web, comprising:
- a device to drive out water by way of gas pressure;
- an imprinting fabric associated with said device;
- a plurality of membranes including at least one an air distribution membrane and an anti-rewetting membrane;
- and at least four rolls arranged in parallel and into which a compressed gas can be fed, thereby defining a pressure space, the fiber web being guided together with said imprinting fabric at least once through said pressure space, the fiber web being guided together with said imprinting fabric between said membranes through said pressure space.
Dependencies are inferred from the claim text.