FLEXIBLE WEATHER RESISTANT BUILDING WRAP

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

Priority of my U.S. Provisional Patent Application Ser. No. 60/805,798, filed 26 Jun. 2006, hereby incorporated herein by reference, is hereby claimed.

Incorporated herein by reference is my U.S. patent application Ser. No. 11/297,111, filed 7 Dec. 2005, and published on 6 Jul. 2006 as publication no. US 2006/0147696 A1.

This is not a continuation, divisional, or continuation-in-part of any patent application.

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not applicable

REFERENCE TO A “MICROFICHE APPENDIX”

Not applicable

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to the construction of buildings or homes, and more particularly, to a weather resistant barrier or “wrap” for buildings that combats water, moisture, or air infiltration, important for those structures that are constructed of a wooden or like framing.

2. General Background of the Invention

Moisture can be one of the worst enemies of a home or building. Water or moisture or humid air infiltration if allowed to penetrate behind siding or brick can saturate the wood of a building structure, thereby creating an environment that encourages mildew or rot.

A weather resistant barrier has for many years been applied to the wood studs of buildings and homes in order to resist the moisture or water generated by weather. Such material is typically flexible and in a film or sheet form. Typically, this weather resistant barrier or “house wrap” is applied to the wooden stud frame before the application of a final siding or veneer (e.g. brick, metal, painted wood). Many such “wrap” products are commercially available such as, for example: Dupont Tyvek®, Typar® Housewrap (www.typarhousewrap.com), and Barricade® building wrap (www.ludlowcp.com).

The following U.S. patents are possibly relevant, each hereby incorporated herein by reference:

TABLE
PATENT		DATE
DOC. NO.	TITLE	(MM-DD-YYYY)
4,271,218	Pipe Insulating Jacket	06-02-1981
4,401,104	Thermal Gain Sensor	08-30-1983
4,508,776	Metallised Fabric	04-02-1985
4,537,313	Flexible Insulated Container	08-27-1985
4,657,807	Bright Metalized Fabric and	04-14-1987
	Method of Producing such a
	Fabric
4,668,555	Heat Insulating Body	05-26-1987
4,686,152	Packaging Material	08-11-1987
	Comprising Iron Foil, and
	Container and Container Lid
	Composed Thereof
4,813,210	Radiation-Sterilized,	03-21-1989
	Packaged Medical Device
4,871,597	Light-Weight Multi-Layer	10-03-1989
	Insulating Enclosure
4,916,016	Metal or Plastic-Clad	04-10-1990
	Polyvinyl Resin Laminates
4,985,106	Insulation Structure for	01-15-1991
	Appliances
5,105,970	Freight Container Insulating	04-21-1992
	System and Method
5,108,821	Self-Extinguishing Blanket	04-28-1992
	enclosed with Plastic Films
5,143,245	Leak-Proof Insulating System	09-01-1992
	for Freight Containers
5,324,467	Process for Preparation of	06-28-1994
	Oriented Multilayer Laminate
	Film
5,451,367	Method of Sterilizing the	09-19-1995
	Inside Layer in a Packaging
	Material
5,585,154	Flexible and Non-Water	12-17-1996
	Absorbing Insulation System
US	Metallized heat resistant	03-17-2005
200500587	material with thermal
90	barrier
JP6-	Aluminum Vapor-Deposited	05-17-1994
134928	Heat-Sealable Resin Film
JP-	Heat Resistance Container	09-28-1994
08090689	Transfusion Liquid made
	Composite Film Comprise
	Polyolefin Film Bond Vapour
	Deposit Laminate Film
	Forming Polyester Film
	Aluminum Oxide Film Modified
	Polypropylene Layer

BRIEF SUMMARY OF THE INVENTION

The present invention provides an improved weather resistant barrier or house wrap for enveloping a framed building.

The present invention provides a flexible wrapping material that includes a sheet of flexible material that is thin enough to be wound upon a roll. The sheet of material is of a multilayer construction that includes a base layer of polymer (e.g. polyester) that is metalized and that has a closed cell foam layer or carbon foam layer or carbonized foam layer adhered to it using a selected layer of adhesive.

This sheet of flexible material is provided with a matrix of small openings that are preferably spaced over the sheet of material, each opening being for example between about 0.1 and 1.5 millimeters in diameter. The openings are preferably spaced apart a distance of between about 0.25″ and 1.5″ (0.64 and 3.8 cm).

In the preferred embodiment, the polyester layer is metalized on a surface area of the polyester layer that is next to the adhesive layer.

In the preferred embodiment, the layer of adhesive is a thermoplastic adhesive layer.

In the preferred embodiment, the foam layer is a closed cell foam layer. The foam layer for example can be a polyethylene foam layer or a carbon foam layer or a carbonized foam layer.

The openings are preferably between about 0.3 and 0.7 millimeters in diameter, and preferably about 0.5 millimeters in diameter.

The layer that is metalized is preferably aluminum.

The aluminum metalized layer is preferably an aluminum having an optical density of at least about 2.7, and more preferably at least about 4.0.

The metalized layer preferably has an emissivity of no more than about 0.03.

The present invention provides a method of wrapping a framed building (i.e. wooden stud frame) that includes at least partially enveloping the studs of the building with a flexible sheet of material, the sheet being a multilayer sheet that includes an inner layer of foam, an outer layer of polyester having inner and outer surfaces, the inner surface being a metalized surface.

An adhesive layer is placed in between the foam layer and the outer layer of polyester wherein the adhesive layer contacts the metalized surface.

The method includes perforating the sheet of material and then securing the perforated sheet to the wooden framing (e.g. studs) of the framed building.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

For a further understanding of the nature, objects, and advantages of the present invention, reference should be had to the following detailed description, read in conjunction with the following drawings, wherein like reference numerals denote like elements and wherein:

FIG. 1 is a perspective view of the preferred embodiment of the apparatus of the present invention;

FIG. 2 is a fragmentary view of the preferred embodiment of the apparatus of the present invention;

FIG. 3 is a sectional view taken along lines 3-3 of FIG. 2;

FIG. 4 is a preferred embodiment of the present invention shown installed on a wall portion of a building; and

FIG. 5 is a preferred embodiment of the present invention shown installed on a roof portion of a building.

DETAILED DESCRIPTION OF THE INVENTION

FIGS. 1-5 show the preferred embodiment of the apparatus of the present invention designated generally by the number 10 in FIGS. 1-5.

Flexible house wrap 10 is preferably provided in roll 11 form wherein a web or sheet 12 of material is wound upon the roll 11. The web or sheet 12 has spaced apart generally parallel edges 13, 14 and end portions such as the end 15 shown in FIG. 1.

The web or sheet of material 12 is preferably perforated generally in a matrix pattern as shown in FIG. 2. The perforations 16 are preferably spaced apart a dimension designated by arrows 17 in FIG. 2. Additionally, a spacing indicated by arrows 18 is provided as a minimal spacing between edge 13, edge 14 or end 15 and a perforation 16 as shown in FIG. 2.

In FIG. 3, the web or sheet of material 12 is shown in section. The sectional view shown of FIG. 3 reveals a multilayered web or sheet 12. The layers of the web or sheet 12 include an upper layer 19 which is a polymeric layer. The polymeric layer 19 can for example be a polyester layer.

A metal foil layer 20 is preferably a metalized layer that is applied to the polymeric layer 19. An adhesive 21 layer joins the polymeric metalized layer 19, 20 to a foam layer 22, preferably a closed cell foam such as polyethylene foam.

The foam layer can be a carbon or carbonized foam layer. Examples of carbon foam or carbonized foam can be found in U.S. Pat. No. 3,922,334 entitled “Foam Carbonization and Resulting Foam Structures”; U.S. Pat. No. 5,888,469 entitled “Method of Making a Carbon Foam Material and Resultant Product”; U.S. Pat. No. 6,033,506 entitled “Process for Making Carbon Foam”; U.S. Pat. Nos. 6,183,854 and 6,346,226, each entitled “Method of Making a Reinforced Carbon Foam Material and Related Product,” each hereby incorporated herein by reference.

In FIGS. 4 and 5, a building frame 23 is shown, and particularly wall 24 and roof 25 frame portions. The wall 23 can be formed using wooden studs such as the horizontal 26 beams and the vertical 27 beams in FIG. 4.

Roof 25 can be formed of a plurality of beams such as the beam 28 that extends horizontally at the apex of the roof 25 and the diagonally extending beams 29.

In FIG. 4, the web 12 of material can be applied to the outer surface of the wall 24. In FIG. 5, the web 12 of the material is preferably attached to the underside of the beams 28, 29.

To the extent not inconsistent with information in the present specification, thicknesses of materials, types of materials, and amounts of adhesive can be as in published application no. US 2005/0058790 A1, published 17 Mar. 2005 for “Metallized heat resistant material with thermal barrier”, with layer 19 of the present application corresponding to layer 2 of the published application, layer 20 of the present application corresponding to layer 1 of the published application, layer 21 of the present application corresponding to layer 5 of the published application, and layer 22 of the present application corresponding to layer 4 of the published application. Sheeting 12 of the present invention can be made in the manner that metallized heat resistant material 6 is made in the published application.

The total thickness of the sheeting 12 of the present invention can be, for example, 0.1-1.5 mm, preferably 0.3-1.3 mm, and more preferably 0.8-1.0 mm.

The optical density is preferably greater than 2.7, more preferably greater than 3.0, even more preferably greater than 3.5, and most preferably greater than 4.0.

The emissivity is preferably less than 0.06, more preferably less than 0.04, and even more preferably less than 0.03.

The diameter of the perforations 16 is preferably around 0.1-1.5 mm, more preferably around 0.3-0.7 mm, and even more preferably around 0.4-0.6 mm. The diameter can be, for example, around 0.5 mm.

The spacing 17 between perforations 16 can be 1/16″-1.5″ (0.16-3.8 cm), preferably ⅛″-1.0″ (0.32-2.5 cm), more preferably 3/16″-⅞″ (0.48-2.2 cm), and for example ¼″ (0.64 cm).

The spacing 18 from the closest perforations 16 to edge 13, edge 14 or end 15 of web or sheet 12 can be 0 or it can be 1/16″-1.5″ (0.16-3.8 cm), preferably ⅛″-1.0″ (0.32-2.5 cm), more preferably 3/16″-⅞″ (0.48-2.2 cm), and for example ¼″ (0.64 cm).

The following is a list of parts and materials suitable for use in the present invention.

PARTS LIST

Part Number	Description
10	flexible house wrap
11	roll
12	web or sheet of material
13	edge
14	edge
15	end
16	perforation
17	spacing arrow
18	spacing arrow
19	upper polymeric layer
20	metal foil layer
21	adhesive layer
22	foam layer
23	building frame
24	wall
25	roof
26	horizontal beam
27	vertical beam
28	beam
29	beam

All measurements disclosed herein are at standard temperature and pressure, at sea level on Earth, unless indicated otherwise. All materials used or intended to be used in a human being are biocompatible, unless indicated otherwise.

The foregoing embodiments are presented by way of example only; the scope of the present invention is to be limited only by the following claims.