Method for strengthening cellulosic substrates, cellulosic nonwoven wipes, and paper filter stock
US6241780A · kind A · utility
24Cited by
11References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1995 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Feb 27, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2260/028
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
This invention relates to a method for strengthening a cellulosic substrate by treating the substrate with a formaldehyde-free curable aqueous composition and curing the composition. The cellulosic substrates include, for example, paper oil- and air-filter stock, rayon nonwoven wipes, cellulosic laminating stock, cotton woven fabrics, and wood flakes suitable to be consolidated into flakeboard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.