Multiple ply paper product containing an outer ply of reclaimed white office waste
US5055161A · kind A · utility
14Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1991 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Feb 21, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2317/122
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multi-ply paper product, such as linerboard, composed of a base ply of Kraft pulp and a top ply of reclaimed, white office waste paper which contains fillers, such as clay and calcium carbonate, toners and ink. A dry strength additive, such as cooked starch, is incorporated in the plies and serves to improve the internal strength of the top ply, as well as improving the bond between the plies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.