US2777786A

US2777786A - Thermal insulation

Info

Publication number: US2777786A
Application number: US424953A
Authority: US
Inventors: Schwartz Alexander; Fogelson Emile
Original assignee: Leobarb Corp
Current assignee: Leobarb Corp
Priority date: 1954-04-22
Filing date: 1954-04-22
Publication date: 1957-01-15
Anticipated expiration: 1974-01-15

Description

Jan. l5, 1957 A, SCHWARTZ ET AL 2,777,786

THERMAL INSULATION Filed April 22, 1954 JNVENTORS.

Alexander Schwartz ByEmIe Fogelson mwn/W'JW www ATTORNEYS 2,777,786 Patented Jan. 15, 1957 2,777,786 TWRMAL NSIEATION Alexander Schwartz and Emile Fogelson, New York, N. Y assignors to Leoharh Corporation, New York,

. Y., a corporation of New York Application April 22, 1954, Serial No. 424,953

7 Claims. (Cl. 154-45) This invention relates to thermal insulation of general untility of the type suitable for use in buildings, refrigerators, vehicles, boxes and the like, and has for its object the provision of an improved insulation of this character. More particularly, the invention is concerned with insulation in the form of thin sheets which may be supported in stretched positions by supporting or attaching members. The invention provides composite insulating products or structures formed of a plurality of sheets of insulating material connected to supporting edge strips and arranged to be installed as an integral structure.

The composite insulation of the invention comprises two or more sheets of insulating material such as metal foil, laminated metal foil and paper, asbestos, plastic, or paper. The insulation may be formed entirely of one sulation of continuous sheets or webs of more or less indefinite length and to connect the edge portions of the sheets to supporting other when installed, and a means for attaching the insulation in the place of use, such as to the framing structure of a refrigerator, box, building, or the like.

The sheets of insulating material are attached along their lengthwise edges to the edge strips which are relatively stil, narrow strips of sheet material, such as paper, which provides a means for attaching the insulation to the inner opposite faces of adjacent framing structures such as the studs, rafters, or joists of buildings. Insulathe insulation in such manner that one sheet, called the front sheet, is held spaced from the other sheet, called the back sheet," an appreciable distance when the edge strips are attached to the inner faces of the adjacent framing structures. The insulation of the invention may comprise any desired number of insulation sheets, and either two edge strips for each sheet of insulation, in one embodiment of the invention, or two edge strips for each sheet of insulation less two, in another embodiment of the invention.

One characteristic feature of the insulation is that the plurality of insulation sheets and the edge strip or strips along each edge, as the case may be, are in superposed bonded engagement along their edges forming attachment edges by means of which the insulation may be nailed, stapled, or otherwise attached lengthwise to the framing structures. While the edge strips are formed of a material which is stili with respect to the insulation sheets and, in view of their narrowness, can support the insulation sheets in spaced relation, they are also suii- `ciently exible that the insulation can be arranged in compact at form and rolled into a roll for packaging.

When the insulation is installed between framing structures with the edges attached as with nails to the inner parallelism with the frames. At least one of the insulation sheets is attached to an edge strip on the side facing the structure and is folded over the edge of the strip,

front sheet of insulation has relatively narrow edge attachment to the edge strips so that when the are held apart and parallel to each other strips being free.

the ones closest to the fra-ming structures,

sheets with their attached edge strips lying one over the other and being attached together along their edge portions. When this form of insulation is arranged in position for insulation with the edge strips held apart and parallel to each other, the edge portions provide a means for attachment to the inner opposite faces of the framing structures as by means of nails. The opposite longitudinal edges of the edge strips tact therewith.

The sheets of insulation are so proportioned in width with respect to the distance between the framing structures and the resilient insulation 1s installed the sheets These and other objects of the invention will be better understood after considering the following discussion taken in conjunction with the accompanying drawing in which:

Fig. 1y is aperspective of insulation of the inventionillustrating one manner of rolling the insulation into a form suitable for packaging;

Fig. 2 is a cross-sectional view of one embodiment of insulation of the invention when attachedy to framing structures;

Fig. 3 is a. cross-sectional view of another embodiment of insulation of the invention attached to framing Vstructures, and

Fig. 4 is a fragmentary cross-sectional view illustrating vanother embodiment of insulation of the invention.

The insulation illustrated in the drawings, and particularly that shown in Fig. l, comprises two or more sheets of insulating material. formed of any suitable sheet material, such as aluminum. foil, laminated aluminumV foil and paper, plastic, asbestos, or paper, or of. combinations of these sheet materials. We prefer to form the insulation of at least one sheet of aluminum foil or laminated aluminum foil and paper and at least one other sheet of suitable insulating material.

In all embodiments of our invention when we use aluminum foil, the foil should be preferably dead soft aluminum varying, say, from 0.00025 to 0.006 inch in thickness. When paper is use we prefer to use kraft paper of any suitable weight, say, from 18 pounds to 100 pounds base weight and preferably paper treated with lire, vermin and fungus retarding agents.

The insulation illustrated in Fig. 2 comprises a front sheet 1, an intermediate sheet 2, and a back sheet 3, each of which is of indefinite length and a width suicient to form a composite insulation which can assume the position illustrated between the framing structures F, for example, standard framing structures of a building which are spaced 16 inches between centers. The

edge strips

4, 5, 6, 7, S and 9 can be formed of any suitable relatively stiff sheet material that will support the insulation sheets in the position illustrated. The edge strips are also of indeiinite length and each of these strips is attached as by means of an adhesive or any suitable stitching to its contacting side of an insulation sheet. The attached sheets and -edge strips are arranged in superposed relation and attached to each other in the position shown. lt will be noted that the

strips

4 and 7 attached to the front sheet are the narrowest and that the successively overlying edge strips are progressively wider by a distance equal to or slightly greater than the distance between the insulation sheets, the Widest edge strips being 6 and 9 which are closest to the framing structures F.

One important feature of this insulation is that when the edge strips are held apart and parallel to each other, the insulation may be inserted between the inner faces of the framing structures and the overlying attached edge strips and insulation sheets provide relatively firm and strong edge portions 10 and 11 which are readily accessible for nailing the insulation to the framing structures as illustrated. lt will be noted that although the insulation is only attached along these edge portions 10 and 11 with the nails N that the edge strips, by reason of their resilient character, dimensions and attachment, urge the insulation sheets in their taut spanning position and hold them in close Contact with the inner opposite faces of the framing structures.

The embodiment of insulation illustrated in Fig. 3 is generally similar to that of Fig. 2 comprising an inner sheet 1, an intermediate sheet 2, a hack sheet 3 and

edge strips

15,16, 17 and 1S, it will be noted that, while there are three sheets of insulation, there are only two edge strips along each edge thereof. The front sheet 1 is attached as with an adhesive along its entire area of contact surface to the sides of strips and 17, while insulation sheet 2 is bent over the edges of

edge strips

15 and 17 and attached as with an adhesive to the opposite sides.

Edge strips

15 and 17 accordingly support both sheets 1 and 2 in the spaced spanning positions illustrated.

insulation sheet 3 is bent over the edges of

edge strips

16 and 18 and attached along one side thereof as with an adhesive. The superposed longitudinal edge portions of the insulation sheets and the edge strips are attached together in the position illustrated, providing the

attachment edge portions

20 and 21. rIhese edge portions provide a means for attaching the insulation to the framing structures F as with the nails N. The edge strips 15, lo and 17, 18 have the width relation necessary to provide the spaced spanning position of the insulation sheets and they also hold these sheets in their taut spanning relation and in close contact with the framing structures.

Fig. 4 illustrates a further embodiment of the invention comprising

insulation sheets

25, 26, 27, 28 and 29, each being attached along the longitudinal edges to edge strips 50, 31', 3-2, 33 and 34, respectively. The sheets of insulation and the edge strips are arranged in the superposed position shown and attached to each other as with an adhesive so as to provide edge portion 35 by meansr of which theV insulation may be attached to a framing structure F as with nails N. Any suitable number of insulation sheets may be attached to edge strips as shown and these may be constructed, either as in Fig. 4 or Fig. 3.

While any desired spacing may be provided between the adjacent sheets of insulation, it is advantageous to so proportion the widths of the edge strips that the insulating sheets are held approximately 3A inch apart and this is particularly desirable When the adjacent sheets are formed, either entirely of aluminum foil or of laminated paper and aluminum foil. The highly reflective and' very low emissive surface of aluminum foil does not otter effective retardation to the transfer of radiant heat when in contact with other material and any individual surface has a progressive diminution in eectiveness as the distance between the sheets approaches Zero.

Fig. l illustrates one eiective means of packaging the insulation of the invention. Insulation of the type shown in Figs. 2, 3 or 4 can be so folded that the insulation sheets are in close overlying position with the edge strips folded into parallelism therewith. The edge strips are preferably formed o such sheet material that the innermost convolutions ofthe roll may have a diameter of, say, 3 inches. The insulation is preferably packaged in roll form and when removed from the package Vcan be unrolled and cut in the length desired to cover the entire space between the framing structures. The mechanic simply turns the superposed longitudinal edges to a position with the edge strips spaced apart and parallel to each other and nails the attachment edges to the framing structures as shown.

We claim:

l. An improved thermal insulation which comprises a plurality of insulating sheets at least one of which is aluminum foil, the sheets being relatively narrow and of indeiinite length and superposed one over the other, said sheets consisting of a front sheet, at least one intermediate sheet, and a back sheet, each of said insulating sheets having a flanged edge portion on each of the edges thereof, a plurality of relatively stili edge strips of dilerent widths, one of each of said edge strips extending along and attached to each ofthe anged edge portions of the insulating sheets, the narrowest edge stripsV being attached directly to the front sheet, the widest edge strips being attached directly to the back sheet, the edge strips of intermediate width being attached to an intermediate sheet and to the back sheet, the hanged edge portions of the insulating sheets and the edge strips being connected together and forming attachment edge portions, the insulating sheets being of different widths, the back sheet being widest, the intermediate sheet being narrower and the iront sheet being the narrowest, the attachment edge portions being arranged to lie close to framing structures, whereby the stit edge strips rcsiliently hold their respective attached insulating sheets taut; said insulation being adaptable to being rolled into package form and when Y strips are held apart and parallel to each other the insulating sheets are held spaced apart.

2. An improved insulation according to claim 1 in which the edge strips progressively increase in Width from the narrowest to the widest approximately 3%; inch thereby supporting the insulating sheets at least about 3%; inch apart.

3. An improved insulation according to claim 1 in which at least two of the sheets comprise aluminum foil.

4. An improved insulation according to claim 1 in which the flanges of the several insulating strips extend forwardly and the forwardly-extending portions of the rear sheets lie opposite the anges of the front sheet.

5. An improved thermal insulation which comprises a plurality of insulating sheets at least one of which is side of an edge strip, the insulating sheet next adjacent the front sheet overlying the front sheet and extending the edge strips to which the flanges having its respecsides and parallel to each other.

6. An improved insulation according to claim 5 in which at least two of the sheets are of aluminum foil held about 3A inch apart.

7. An improved insulation according to claim 5 in which another edge strip approximately 3%; inch Wider than the aforementioned edge strips are adhesively bonded over each of the longitudinal edges of the other insuladng sheet, and a third insulating sheet is placed in position overlying the other insulating sheet and the longitudinal edge portions thereof are adhesively bonded to the lastmentioned edge strips.

References Cited in the le of this patent UNITED STATES PATENTS

Claims

1. AN IMPROVED THERMAL INSOLATION WHICH COMPRISES A PLURALITY OF INSULATING SHEETS AT LEAST ONE OF WHICH IS ALUMINUM FOIL, THE SHEETS BEING RELATIVELY NARROW AND OF INDEFINITE LENGTH AND SUPERPOSED ONE OVER THE OTHER, SAID SHEETS CONSISTING OF A FRONT SHEET, AT LEAST ONE INTERMEDIATE SHEETS, AND A BACK SHEET, EACH OF SAID INSULATING SHEETS HAVING A FLANGED EDGE PORTION ON EACH OF THE EDGES THEREOF, A PLURALITY OF RELATIVELY STIFF EDGE STRIPS OF DIFFERENT WIDTHS, ONE OF EACH OF SAID EDGE STRIPS EXTENDING ALONG AND ATTACHED TO EACH OF THE FLANGED EDGE PORTIONS OF THE INSULATING SHEETS, THE NARROWEST EDGE STRIPS BEING ATTACHED DIRECTELY TO THE FRONT SHEET, THE WIDEST EDGE STRIPS BEING ATTACHED DIRECTLY TO THE BACK SHEET, THE EDGE STRIPS OF INTERMEDIATE WIDTH BEING ATTACHED TO AN INTERMEDIATE SHEET AND TO THE BACK SHEET, THE FLANGED EDGE PORTIONS OF THE INSULATING SHEETS AND THE EDGE STRIPS BEING CONENCTED TOGETHER AND FORMING ATTACHMENT EDGE PORTIONS, THE INSULATING SHEETS BEING OF DIFFERENT WIDTHS, THE BACK SHEET BEING WIDEST, THE INTERMEDIATE SHEET BEING NARROWER AND THE FRONT SHEET BEING THE NARROWEST, THE ATTACHMENT EDGE PORTIONS BEING ARRANGED TO LIE CLOSE TO FRAMING STRUCTURES, WHEREBY THE STIFF EDGE STRIPS RESILIENTLY HOLD THEIR RESPECTIVE ATTACED INSULATING SHEETS TAUT, SAID INSULATION BEING ADAPTABLE TO BEING ROLLED INTO PACKAGE FORM AND WHEN UNROLLED AND THE EDGE STRIPS ARE HELD APART AND PARALLEL TO EACH OTHER THE INSULATING SHEETS ARE HELD SPACED APART.