Method and apparatus for the measurement of cell size in a foam structure
US4329052A · kind A · utility
14Cited by
4References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1979 |
| Grant date | May 11, 1982 |
| Priority date | — |
| Expiry date | Mar 28, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/0205
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus are provided to continuously monitor and measure the average size of individual foam cells contained in a foam structure, such as polystyrene foam for example, as it is being fabricated. Such an arrangement permits the prompt adjustment of process conditions and/or the concentration of nucleating agents in the extrusion system in the event the size of the individual cells in the foam structure varies from a preselected standard.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.