Thin bed sorption/desorption apparatus and method for making the same
US4599095A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1984 |
| Grant date | Jul 8, 1986 |
| Priority date | — |
| Expiry date | Oct 22, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A thin bed sorption/desorption apparatus includes a heater element laminated within a high temperature chemically inert polymer with an adhesive on the outside of the laminate being used to attach a thin film of small particle size sorptive material. Various embodiments of the apparatus are each arranged to provide a flow of a sample to be analyzed across the surface of the sorptive material. The method for making the thin bed sorption/desorption apparatus includes the steps of encapsulating a thin-film heater element in a laminated structure of a polyimide which is a high temperature, chemically inert polymer. The outside surface of the laminate is coated with a polyimide adhesive which is diluted with dimethyl formamide. The sorptive material in the form of a powder having a maximum particle size of 100 mesh is applied to the wet adhesive. Subsequently, the coated structure is heat cured at approximately 220.degree. C. for a period of approximately 30 minutes until the adhesive is dry and the sorptive material layer is fixed to the laminate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.