Method for wet web molding and drying
AssigneeKimberly-Clark Worldwide, Inc.
InventorsMark Wilson Fiscus, Thomas Garrett Neal, Jr.
Life of this patent
Estimating the term…
Abstract
A method for can drying wet webs for tissue products to preserve web bulk includes, in one embodiment, restraining a partially dewatered wet web between a pair of sheet molding fabrics. The restrained wet web is processed over a plurality of can dryers to dry the wet web, for example from a consistency of at least about 40 percent to a consistency of at least about 70 percent. The sheet molding fabrics in this embodiment protect the wet web from direct contact with the can dryers and impart an impression in the web. A can drying assembly and tissue machine for accomplishing the method are also disclosed.
Claims11
A method of making a tissue sheet, comprising the steps of:
- depositing an aqueous suspension of papermaking fibers onto an endless forming fabric to form a wet web;
- partially dewatering the wet web;
- restraining the partially dewatered wet web between a pair of sheet molding fabrics;
- and
- processing the restrained wet web over a plurality of can dryers to dry the wet web from a consistency of at least about 40 percent to a consistency of at least about 70 percent.
A method of making a tissue sheet, comprising the steps of:
- depositing an aqueous suspension of papermaking fibers onto an endless forming fabric to form a wet web;
- transferring the wet web to an air and liquid permeable perforated belt arranged to form an endless loop;
- transferring the wet web to the surface of a cylindrical drying device;
- creping the wet web from the cylindrical drying device when the wet web has a consistency of at least about 40 percent;
- restraining the creped wet web between a pair of sheet molding fabrics;
- and
- processing the restrained wet web over a plurality of can dryers to dry the wet web to a consistency of at least about 70 percent.
A method of making a tissue sheet, comprising the steps of:
- depositing an aqueous suspension of papermaking fibers onto an endless forming fabric to form a wet web;
- transferring the wet web to an air and liquid permeable perforated belt arranged to form an endless loop;
- transferring the wet web to the surface of a cylindrical drying device;
- creping the wet web from the cylindrical drying device when the wet web has a consistency of at least about 40 percent;
- transferring the creped wet web to a sheet molding fabric;
- processing the wet web while disposed on the sheet molding fabric over a plurality of can dryers to dry the wet web to a consistency of at least about 70 percent, the wet web and sheet molding fabric alternately being directly in contact with the plurality of can dryers;
- and transferring the wet web to a final drying section.
Dependencies are inferred from the claim text.