Method of moist creping absorbent paper base sheet
US8398819B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2010 |
| Grant date | Mar 19, 2013 |
| Priority date | — |
| Expiry date | Dec 7, 2030 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/55
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method of moist creping absorbent paper base sheet includes forming a nascent web including at least a major portion of flattened ribbonlike cellulosic fibers of recycled fiber. A creping adhesive coating including an admixture of polyvinyl alcohol and a polyamide crosslinked with epichlorohydrin is applied to a Yankee dryer. The nascent web is passed through a nip, defined between a suction pressure roll and the Yankee dryer, having a controlled loading. The nascent web is adhered to the Yankee dryer and dried on the Yankee dryer to a moisture content corresponding to a sheet temperature, immediately prior to the creping blade, of from about 110° C. to about 121° C. The nascent web is creped at a sheet temperature of from about 110° C. to about 121° C. from the Yankee dryer with an undulatory creping blade bearing against the Yankee dryer to form a moist biaxially undulatory web, which is dried.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.