Method for making soft layered tissues
US5494554A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 1994 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Mar 30, 2014 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21H17/55
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The formation of wet-pressed tissue webs useful for facial tissue, bath tissue, paper towels or the like is substantially improved by forming the wet tissue web in layers in which the second-formed layer has a consistency which is significantly less than the consistency of the first-formed layer. The fiber support index of the forming fabric is about 170 or greater. The resulting improvement in web formation enables uniform debonding during creping, which in turn provides a significant improvement in softness and a reduction in linting. Wet-pressed tissues made with this process are uniformly internally debonded, as measured by a high Void Volume Index, which is comparable to that of throughdried tissues.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.