Continuous process for duct liner production with air laid process and on-line coating
US7815967B2 · kind B2 · utility
Inventors
Key dates
| Filing date | May 21, 2004 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Jul 13, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C25/26
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A continuous method of making duct liner is provided, comprising the steps of: (i) forming at least one lane of duct liner insulation having a top and bottom surfaces and a pair of side edges, the duct liner insulation having a facing layer on at least a bottom surface thereof, wherein the bottom surface faces downward after the forming step; (ii) flipping the duct liner insulation and facing layer while the duct liner insulation is conveyed, whereby the top surface faces downward and the facing layer faces upward; and (iii) applying a water-resistant coating to the upwardly facing layer, wherein the duct liner insulation is conveyed as part of a continuous manufacturing process from the forming step to the applying step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.