Method and device for the measurement of barrier properties of films against gases
US5361625A · kind A · utility
96Cited by
6References
6Claims
0Family size
Inventor
Key dates
| Filing date | Apr 29, 1993 |
| Grant date | Nov 8, 1994 |
| Priority date | — |
| Expiry date | Apr 29, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/082
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is directed to a novel apparatus for measuring the transmission or permeation of gases, flavors, aromas and volatile substances through films and membranes. The instrument of the present invention also provides the capability of high rate testing in order to allow the expedient analysis of multiple film samples within a reasonable amount of time. This invention also provides an instrument and method for extremely high sampling rate of permeant gas with little or no background noise, whereby detection sensitivity is greatly enhanced relative to conventional testing instruments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.