Support for photographic paper and its production
US6623590B2 · kind B2 · utility
1Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1999 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Jul 28, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31902
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
This invention provides a support for photographic paper being excellent in whiteness and flatness and inexpensive, and having a sufficient adhesive strength of resin which can be generated even at a low resin temperature of 200 to 280° C. through a high speed processing of 100 m/min or more, which comprises a base having a whiteness of 75% or more and a flatness Ra of 20 &mgr;m or less, and a polyolefin resin composition membrane comprising a polyolefin resin and unsaturated bond at a rate of 0.2 or more unsaturated bonds per 1,000 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.