Патент USA US2108682код для вставки
Fe“ 15;, W38. I F. R. LESLIE = 2,108,682 INSULATING MATERIAL Filed Dec. 4, 1936 .i1.‘ il 2 Sheets-Sheet 1 ' 'INVENTOR. Ewnh/ R. Z eslie A TTORNEYS‘ Feb. 15, 1938. F_ R, LESLIE 2,108,682 INSULATING MATERIAL Filed Dec. 4, 1956’ 2 Sheets-Sheet 2 7 ii/ w»3%“ WWW?» W1 V“ w P W" Fig J 6 vi\! R . w Lm % A. 1 m AL av B .M e ATTORNEY. Patented Feb. 15, 1938 2,108,682 arcacaa saccharine Maura-‘wrap I ii‘ranh R. mite, St. Pauli, "Minna Application December a, rear, titties i3 @“aaiidith - (6i. The present invention relates to an insuiating eiement, and more particuiarly to an insulating insulating material wiii not readily be dissipated formed supporting framework, such as the walls below its dew point. its the temperature within the enclosed wall space continues to fall the mois~ ture therein will precipitate out in the form of droplets, which collect on the fibers of the insu“ as is case in the open air, with the come element which is adapted to be ?tted into a pre» cue-nee that the air in the enclosure soon falis ii of a building or refrigerator structure. ' Various types of fibrous substances have been employed for insulating purposes in such struc tures, but where a fibrous insulating substance is lating material. As the temperature passes be low freezing, these droplets freeze and form ice and frost particles. This action is extremely pro condensation upon the fibers'wit'hin the struc nounced in a building having humidifying equip~= ture, the insulating properties' of'the substance ment.- That this action takes place has been ac are materially lessened. ‘ tually demonstrated by opening walls in which It has been found by experiment, and by the > various types of ?brous insulating‘ materials have 15 tual opening of old walls wherein such substances been mounted. Repetition of this process finally have been employed, that the alternate wetting causes the insulation to become soggy, with a con and drying out of such material within the walls sequent loss of insulative properties, and where used which is capableof absorbing water'-either to directly by the fibers of the material itself, or by causes it to sag and drop. Although originally the insulating substance may have been applied 20 to the full height of the walls, when subjected to this action for a few years, the substance has been found to have settled or dropped a material distance from the top of the framed opening in which it was originally mounted. Sometimes the sagging has been so pronounced as to leave a the insulation is mounted in a vertical position, , as in the walls of a building, the additional weight of the water in the mass causes the insulation to settle in its chamber, leaving the top part of‘ the chamber completely without insulation. An object of the present invention is to make an improved heat insulating element. ‘ Another object of the invention is to coat an materially large, entirely uninsulated space at 'element of vapor permeable insulating material with a solution of fiexible, vapor proof substance, which the substance was originally mounted. such solution having a viscosity sumciently high Various expedients have been employed to cov to prevent deep absorption of the solution by said the upper end of each of the framed openings in 30 er batts or blocks of such insulating material, such as by enfolding them in water proofed paper envelopes, but such expedients are not only quite expensive, but are not entirely satisfactory for general use, since it has been difficult to complete 35 1y seal' such envelopes, particularly the ends thereof, and the individually wrapped units them; element and of thereafter evaporating the sol vent in which said substance is dissolved to pro-» vide a water proof coating over the element to which said solution has been applied. _ In order to attain these objects there is pro vided in accordance with one feature of the in vention, an insulating element such as a pad or selves have a tendency to sag and pack in the , batt of vapor permeable insulating material hav walls. ing either mineral or organic ?brous structure, an vThe condensation referred to above is particu outer surface of said element being coated with a larly prevalent in cold climates where the neces-. ‘ viscous rubber or similar solution having a vapor .40 sity for effective insulation is greatest. This izing solvent, the viscosity of the solution being _ condensation is largely caused in cold weather by su?lciently high to prevent penetration of the variations in temperature and humidity in ‘the solution beyond the outer surface portion of said walls which can best be illustrated by a specific element. After the element has been coated with dd example. Let us assume that during a warm period of weather the temperature outdoors is 38° lit, dew point 36° F., and that the following day this solution the solvent is evaporated to leave a tough, resilient coat completely sealing the por tion of the element to which it has been applied the temperature drops down to 10° F., dew point and having adhesive engagement with the outer 6° F. surface of the element. These. and other features of the invention will be more fully set forth in the following descrip tion and the accompanying drawings, wherein: Figure l is in perspective of a frag ment of insulating material embodying the pres ent invention, a portion of the outer coating be During the ?rst day water vapor, which is 50 a gas, will enter the wall space in which the in sulation is mounted, providing this wall space is not hermetically sealed,‘ and will permeate the cells of the insulating material. If the fall in temperature is somewhat rapid, the water vapor in the enclosed wall space and in the cells of the 2,108,689, 2 sheet 8 thereby forming a ?ange. The two ing peeled back to show the construction thereof, ‘the Figure 2 is a view, also in perspective, 0! a sheets are glued together throughout the length portion of a wall frame having an insulating ele ment embodying the present inventlonembodied therein, of the ?ange to securely bind the walls of the envelope together, a water proof adhesive being preferably used to seal this joint against the Gil Figure 3 is a view in isometric projection show ing a modified construction, Figure 4 is a sectional view ‘as on the line 63-4 oi’ Figure 3, and, Figure 5 is a sectional view as on the line 5-5 10 of Figure 3. Referring to the drawings in detail, a portion of insulating material l of water permeable ma terlal such as ?brous batt', whichls normally subject to the objections above set forth, has, the entire outer surface coated with a solutlon of rubber- or other ?exible water proof material dissolved in a solvent which is capable of being evaporated to leave the material covering the batt or block in the form oil a water proof coat lhg 5, adheslvely secured to the outer surface of the insulating element. This solution should be of a viscosity su?lcient ly heavy so that the solution will not permeate 26 materially into the insulating element, since such permeation would reduce the insulating qualities of the element to the depth of penetration of the solution and would also increase the weight and cost of the product. This material can be 30 applied to the block either by spraying, brushing, dipping, or otherwise, as desired, the method of application being no part of the present inven tion. Inasmuch as there are a large number of such solutions which are well known to the art 85 of coating materials, any of which would be suit able for use in the present invention’, it is not considered necessary to specify any speci?c coat ing substance in detail. One'suitable substance for the purpose is a thick viscous rubber solution 40 having a vaporizing solvent. After the applica tion of the solution to the insulating element the solvent is evaporated in any suitable manner such as air drying. . The method of using coated insulating ele 45 ments embodying the present invention is similar to the use of the present well known methods of use of untreated batts or strips. The ele ments may be simply inserted between the stud dings or other frame members as shown in Fig ure 2,- the elements being of a size to fit snugly 50 between the frame members to reduce air leakage around the elements and by frictional engage ment between the rubber coating of‘ the ele ments and the frame members to support the 55 elements in position. The resilient-nature of the cover tends to hold the element in its original form and the adhesion between the cover and the ?ller supports the ?ller in position through out the entire height 0! the unit. When used 60 for other purposes the elements may be mounted entrance of moisture. The ends of the insulating material thus formed are then poated with a rubber'or other suitable insulation as at ll, as previously described for the structure shown in Figures 1 and 2, the coating being applied to each end of the unit and extending to-the walls of the envelope and over the ends of the ?anges so as to completely seal the ends of the insulating structure and adhereto the envelope walls. The viscous material in its solvent state will slightly 15 permeate the ?brous ?ller material 6 so that the ?bers on the ends thereof will be mrmanently bound to the sealing coating ll over the ends of the tiller material 6 and will also have a tight adhesive seal to the envelope walls 1 and 8 there 20 by not only elfectively sealing the ends of the envelope against the entrance of water vapor, but also providing a positive support for the in sulative filler 6 to prevent the filler from sag ging'dow'n in the envelope under its own weight. It has been noted that this general type of in sulation when mounted in a wall space has a sort of draft e?ect due to the fact that the air con tsined within the cells or spaces between the ?bers of the ?ller is somewhat warmer than that 30 in the air space between the outer face of the material and the sheathing or all in which it is mounted so that the warmer ai within the en velope will tend to rise and the colder outer air in the space beyond will tend to fall thereby pro muting a circulation of air with its contained wa ter vapor throughout the material in its con tainlng envelope. The sealing of the ends of thefenvelope in ac cordance with the present invention e?iectlvely 40 prevents such action as, of course, does the com plete‘enclosing o! the element as shown in Fig ures 1 and 2. The embodiment illustrated in Figures 1 and 2 is somewhat more expensive to make than that 45 illustrated in Figures 3 to 5 inclusive but each of the embodiments comprises an insulating ele ment which overcomes one oi! the principal faults of an otherwise excellent type of insulating ma terial and has a distinct ?eld in the art oi‘ in 50 sulation. I claim: 1. An insulating unit comprising a ?exible, va por permeable, ?brous core, a tubular, ?exible, vapor proof envelope enclosing said core and 55 leaving end portions thereof exposed, the end portions of the envelope and the core being co planar and a coating of viscous vapor proof sealing, material over the exposed portions oi’ the core in embedding engagement therewith, 60 in preformed framed chambers adapted to re said coating extending to the end portions of .the envelope in sealing engagement therewith ceive them. whereby said core is‘ positively supported with re ‘ The structure shown in Figure 2 comprises a sill 3,,studding members 4 and, 5, with the ele 65 ment I enclosed in its water proof sheathing 2 mounted between the studdings in a customary manner. , Referring now to the modi?ed structure shown in Figures 3 and 4. Fibrous insulating mate 70 rial 6 is enclosed in a paper envelope compris ing side walls ‘I and 8. The sheet from which the envelope wall a is made is narrower than that 7 from which the wall 1 is made. The edges of the wall 1 are folded forwardly as at 9 and then outwardly as at I0 to engage the outer edge of spect to said envelope. 2. An insulating unit comprising a ?exible, va por permeable, ?brous core, a tubular, ?exible, vapor proof envelope enclosing said core and leaving end portions thereof exposed, and a‘coat log of viscous vapor proof sealing material over the exposed portions of the core in embedding engagement therewith, said coating extending to the end portions of the envelope in sealing en gagement' therewith whereby said core is 'posi tively supported with respect to said envelope. I FRANK It. LESLIE.