Enhancement of tissue paper softness with minimal effect on strength
US5275698A · kind A · utility
4Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 1992 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Mar 9, 2012 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/26
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for making paper to enhance the softness of the paper produced without reducing its dry strength comprises adding to the pulp slurry as a binder resin a cellulosic polymer that exhibits a cloud point in aqueous solution, and allowing the dissolved polymer to coalesce into fine colloidal particles at a temperature above the cloud point either before or after it is added to the slurry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.