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US 2010/0247855 A1Published application
Breathable low-emissivity metallized sheets
AssigneeE. I. Du Pont de Nemours and Company
InventorsIoannis V. Bletsos, Peter Francis Carcia
Life of this patent
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Abstract
A durable metallized moisture vapor permeable sheet is formed by coating a moisture vapor permeable sheet with at least one metal coating comprising a layer of a corrosion resistant metal or a plurality of metal layers having differing compositions. The metallized moisture vapor permeable sheet material is suitable for use as a building construction wrap such as roof lining and house wrap, and as EMF radiation shielding material.
Claims33
A barrier surface in a building construction comprising:
- structural building components and optionally barrier sheathing;
- a water resistive barrier attached to said building components or to said optional barrier sheathing, comprising a metallized, moisture vapor permeable sheet layer having first and second outer surfaces, the sheet layer comprising at least one of a nonwoven fabric, woven fabric, nonwoven fabric-film laminate, woven fabric-film laminate, moisture vapor permeable film and composites thereof, wherein the first outer surface of the moisture vapor permeable sheet layer is a porous sheet selected from the group consisting of microperforated films, woven fabrics and nonwoven fabrics, having at least one metal coating on said first outer surface of the sheet layer which substantially covers the outer surfaces of the porous sheet while leaving the pores substantially uncovered, said metal coating comprising an alloy selected from the group consisting of aluminum/bronze alloys, manganese/bronze alloys, copper/nickel/zinc alloys, copper/nickel alloys, stainless steel, and aluminum/magnesium alloys, having a thickness between about 15 nanometers and about 200 nanometers adjacent the first outer surface of the sheet layer;
- and
- an air space adjacent the water resistive barrier.
1 more element
A metallized, moisture vapor permeable sheet comprising:
- a moisture vapor permeable sheet layer having first and second outer surfaces, the sheet layer comprising at least one of a nonwoven fabric, woven fabric, nonwoven fabric-film laminate, woven fabric-film laminate, moisture vapor permeable film and composites thereof, wherein the first outer surface of the moisture vapor permeable sheet layer is a porous sheet selected from the group consisting of microperforated films, woven fabrics and nonwoven fabrics;
- and
- at least one metal coating on said first outer surface of the sheet layer which substantially covers the outer surfaces of the porous sheet while leaving the pores substantially uncovered, said metal coating comprising an alloy selected from the group consisting of aluminum/bronze alloys, manganese/bronze alloys, copper/nickel/zinc alloys, copper/nickel alloys, stainless steel, and aluminum/magnesium alloys, having a thickness between about 15 nanometers and about 200 nanometers adjacent the first outer surface of the sheet layer.
A barrier surface in a building construction comprising:
- structural building components and optionally barrier sheathing;
- a water resistive barrier attached to said building components or to said optional barrier sheathing, comprising a metallized, moisture vapor permeable sheet layer having first and second outer surfaces, the sheet layer comprising at least one of a nonwoven fabric, woven fabric, nonwoven fabric-film laminate, woven fabric-film laminate, moisture vapor permeable film and composites thereof, wherein the first outer surface of the moisture vapor permeable sheet layer is a porous sheet selected from the group consisting of microperforated films, woven fabrics and nonwoven fabrics having a metal coating on said first outer surface of the sheet layer, the metal coating comprising two or more different metal layers selected from the group consisting of aluminum, silver, copper, gold, tin, zinc, iron, aluminum/bronze alloys, manganese/bronze alloys, copper/nickel/zinc alloys, copper/nickel alloys, stainless steel, and aluminum/magnesium alloys, the metal coating having a thickness between about 15 nanometers and 200 nanometers adjacent the first outer surface of the sheet layer;
- and
- an air space adjacent the water resistive barrier.
1 more element
A metallized, moisture vapor permeable sheet comprising:
- a moisture vapor permeable sheet layer having first and second outer surfaces, the sheet layer comprising at least one of a nonwoven fabric, woven fabric, nonwoven fabric-film laminate, woven fabric-film laminate, moisture vapor permeable film and composites thereof, wherein the first outer surface of the moisture vapor permeable sheet layer is a porous sheet selected from the group consisting of microperforated films, woven fabrics and nonwoven fabrics;
- and
- a metal coating on said first outer surface of the sheet layer, the metal coating comprising two or more different metal layers selected from the group consisting of aluminum, silver, copper, gold, tin, zinc, iron, aluminum/bronze alloys, manganese/bronze alloys, copper/nickel/zinc alloys, copper/nickel alloys, stainless steel, and aluminum/magnesium alloys, the metal coating having a thickness between about 15 nanometers and 200 nanometers adjacent the first outer surface of the sheet layer.
A metallized, moisture vapor permeable sheet comprising:
- a porous flash spun plexifilamentary sheet layer having first and second outer surfaces;
- and
- at least one metal coating having a thickness between about 15 nanometers and 200 nanometers deposited on the first outer surface of the flash spun plexifilamentary sheet layer, said metal selected from the group consisting of aluminum/bronze alloys, manganese/bronze alloys, copper/nickel/zinc alloys, copper/nickel alloys, stainless steel, and aluminum/magnesium alloys;
- wherein the metal coating substantially covers the outer surface of the flash spun plexifilamentary sheet while leaving the pores substantially uncovered.
1 more element
Dependencies are inferred from the claim text.