Process for drying a coated moving web
US5606805A · kind A · utility
Inventor
Key dates
| Filing date | Apr 1, 1996 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Apr 1, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B13/104
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for drying a web of material moving at a speed of at least about 150 feet per minute. In the first step of the process, a web of material is contacted with a first mixture of air and flue gas while passing the web under a first air nozzle. Thereafter, a portion of the first air/flue gas mixture is exhausted through a first exhaust nozzle disposed less than 12 inches away from the first air nozzle. Thereafter, the web is passed under a multiplicity of gas fired infrared radiation emitting burners while contacting said moving web with infrared radiation and flue gas and heating said moving web to a temperature of from about 100 to about 280 degrees Fahrenheit. Thereafter, the web is contacted with a second mixture of air and flue gas while passing it under a second air nozzle. PA0 (d) contacting said web of material with a second mixture of air and flue gas while passing said web under a second air nozzle, wherein said second mixture of air and flue gas is at a temperature of from about 200 to about 850 degrees Fahrenheit, and wherein said air exits said second air nozzle at a velocity of from about 4,000 to about 12,000 feet per minute; and PA0 (e) exhausting a portion of …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.