Multi-elevational tissue paper containing selectively disposed chemical papermaking additive
US5840403A · kind A · utility
159Cited by
51References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1996 |
| Grant date | Nov 24, 1998 |
| Priority date | — |
| Expiry date | Jun 14, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2762
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A chemically enhanced paper structure having a discrete pattern of a chemical composition is disclosed. The paper structure comprises a cellulose substrate, such as tissue paper. The substrate has a topography comprising at least two different elevations. The chemical composition may include a chemical softener composition or a surface-active composition and is selectively disposed in register with one of the elevations of the cellulose substrate, preferably the higher elevation regions. The paper structure is suitable for use as bath tissue or facial tissue.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.