Composite paper
US5053268A · kind A · utility
20Cited by
0References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 1989 |
| Grant date | Oct 1, 1991 |
| Priority date | — |
| Expiry date | Nov 28, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31906
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A composite paper suitable for use as writing paper, printing paper or copying paper is disclosed which includes a synthetic resin film having a thickness of 12-30 .mu.m, and a paper sheet laminated on each side of the synthetic resin film and having a Bekk smoothness of 60-120 seconds, a density of 0.8-1.0 g/cm.sup.3, a degree of sizing of 0.5-1.5 seconds and a thickness of 20-25 .mu.m.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.