Kraft linerboard by densification and heat treatment
US4692212A · kind A · utility
12Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1985 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Aug 23, 2005 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21F11/00
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Both the wet strength and the folding endurance of kraft linerboard are improved by subjecting the board to steps of densification and high temperature treatment during its production.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.