Moisture resistant carton
US4909390A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1988 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Dec 29, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S206/811
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A pack of paper suitable for use in xerographic, ion deposition of magnetographic printing processes, the pack including a stack of paper sheets having a moisture content of not more than 6% and a reclosable carton made of semi-stiff sheet material and comprising a container portion containing said stack, and a closure portion, said container and closure portions having mutual parallel planar surfaces which slidably interengage upon closure of the carton to restrict air ingress to the carton there-between, and means for limiting the (WVIR) to not more than 30 grammes per square meter of the surface area of the carton in 24 hours at 90% Relative Humidity and a temperature of 32.degree. Celsius.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.