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...http://www.google.es/patents/US7815967?utm_source=gb-gplus-sharePatente US7815967 - Continuous process for duct liner production with air laid process and on-line coating
Continuous process for duct liner production with air laid process and on ...
