Method of making a condensing heat exchanger by direct extrusion coating of a film
US6648066B2 · kind B2 · utility
0Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Aug 7, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4935
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A thermoplastic polymer film is directly extruded onto the heated surface of a metal condensing heat exchanger. Any thermoplastic polymer capable of being adhered to the metal surface of the condensing heat exchanger can be utilized. Preferably, the thermoplastic polymer is a polyester, a polyolefin with an added maleate or tackifier to ensure adhesion, polyetherimide, polyethersulfone, polysufone or polyimide. The thermoplastic film must be resistant to the conditions of the condensing heat exchanger, such as the high temperature flue vent gases and the acidic condensate formed from condensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.