Method of texturing untextured dry sanitary tissue web
US4189344A · kind A · utility
37Cited by
9References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1978 |
| Grant date | Feb 19, 1980 |
| Priority date | — |
| Expiry date | Nov 21, 1998 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F11/006
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Softness and bulk are imparted to untextured dry sanitary tissue sheet web by advancing it under ordinary support point tension through the nip of spaced grooved rotary texturing rolls having complementary partially interdigitated texturing ribs acting on both sides of the web with progressive wave-stretch texturing deformation of the web to release the hydrogen bonds between some of the fibers in the network of fibers in the web without breaking the fibers, and while maintaining the elasticity of the web.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.