Process for increasing the softness of base webs and products made therefrom
US6607635B2 · kind B2 · utility
11Cited by
50References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2001 |
| Grant date | Aug 19, 2003 |
| Priority date | — |
| Expiry date | Nov 29, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31993
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A process for increasing the tactile properties of a base web without adversely affecting the strength of the web is disclosed. In general, the process includes the steps of placing a base web in between a first moving conveyor and a second moving conveyor. The conveyors are then wrapped around a shear inducing roll which creates shear forces that act upon the base web. The shear forces disrupt the web increasing the softness and decreasing the stiffness of the web. The shear inducing roll typically has a relatively small diameter. In some applications, more than one shear inducing roll may be incorporated into the system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.