Production of soft paper products from high and low coarseness fibers
US5620565A · kind A · utility
52Cited by
15References
50Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1995 |
| Grant date | Apr 15, 1997 |
| Priority date | — |
| Expiry date | Oct 26, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Paper products such as bathroom tissue, facial tissue, napkins and paper towels are made from high coarseness fibers such as recycled newsprint fibers, CTMP, TMP, and groundwood. These products exhibit premium level qualities in terms of softness, bulk, and flexibility. The novel process selectively treats these high coarseness fibers in a way that makes the fibers feel softer and enhances papermachine operation with this type of furnish, thereby permitting higher product quality levels than previously possible with high coarseness fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.