Temporary wet strength system for tissue paper
US8097125B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2005 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Jul 27, 2027 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H23/12
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a composition comprising a (a) a temporary wet strength agent component capable of forming hemi-acetal bonds with the fibers of a tissue web to provide initial wet strength, subsequent rapid degradation of the initial wet strength when the tissue web contacts water; and (b) a sizing agent component capable of imparting water-repelling properties to the tissue web; such that the strength agent component and the sizing agent component are present in sufficient amounts so that when the composition is added to a tissue pulp slurry during a tissue-making process, tissue made from the tissue-making process exhibits a combination of (i) improved initial wet tensile, (ii) improved decay, and (iii) absorbency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.