Densification and heat treatment of paperboard produced from SCMP and other sulfite pulps
US4718982A · kind A · utility
16Cited by
16References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1985 |
| Grant date | Jan 12, 1988 |
| 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 SCMP and sulfite paperboard 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.