Laminated insulation blanket
AssigneeJohns Manville
InventorChristos J. Botsolas
Life of this patent
Estimating the term…
Abstract
As a flexible composite insulation, a layer of mass type of insulating material of low heat conductivity is bonded to a multilayer protective jacket. The mass insulation layer is flexible in at least one direction for fitting pipes, etc., and it is preferably a series of parallel contiguous strips of fiber glass or mineral wool batt insulation cemented to the vapor barrier layer of the jacket with their fibers substantially oriented in parallel planes aligned perpendicularly to the jacket. The jacketing material is preferably a combination of vapor barrier film of a metallized polyethylene terephthalate with its aluminum coated face bonded to one face of a layer of glass fiber-reinforced asbestos paper which has its other face bonded to an exterior surface film of polyvinyl fluoride.
Claims16
A flexible jacketed thermal insulation blanket which consists essentially of:
- a. a flexible thermal insulation element comprising at least one layer of mass type thermal insulation of low thermal conductivity and which is flexible in at least one direction;
- and adhered thereto in a laminar relationship;
- b. a flexible jacket element consisting essentially of;
- i. a vapor barrier layer consisting essentially of a first polymeric film having deposited on the interior face thereof a thin coating of a reflective metal, said polymeric film being selected from the group consisting of polyester and halocarbon polymeric film;
- ii. a fibrous insulating layer consisting essentially of asbestos fiber reinforced with an open mesh scrim cloth;
- and
- iii. an exterior layer consisting essentially of a second polymeric film selected from the group consisting of halocarbon and acrylic polymeric films;
- the uncoated face of said first polymeric film being adhered to said thermal insulation element, the metal coated face of said first polymeric film being adhered to one face of said fibrous insulating layer, and the other face of said fibrous insulating layer being adhered to said second polymeric film.
Dependencies are inferred from the claim text.