US1769633A - Constructional material - Google Patents

Description

Patented July 1, v

4 Y UNITED STATES; PATENT OFFICE? mam c. rrsczma, or cnrcaoo, rumors, assrenon. TO THE PHILIP canny MANU rac'ruame' contrar a conroaarron or onIo cons'rraucrronar. MATERIAL Ho Drawing. I

This invention relates to constructional ma terial, such as, roofin' materiahjinsulating' material, tapes, shing es, packing and the,

like.

5 The object of my presentinventionisto provide such constructional materialswith: an adhesive coating which is normally stickyor tacky to the ,touch and which. lastingly maintains this mastic condition whereby the material may be packed and stored for long periods of time without losing'its tacklness and may be transported to its place'of installation and used in such tacky condition without further treatment. r u A further object of my invention resides in the application of this normally lastingly adhesive, sticky to the touch, to sheets or str1ps of carrier material, hereinafter called vehicles, so that when rolled into package form or so placed face to face in contact with a similar sheet for packing and storing and transportation, they may be unrolled or pulled apart readily without tearing or damaging, and can be installed in tacky condition; 1n thls instance the tacky coating permits the facile separation of the contacting vehicle surfaces, the line of cleavage passing through the mastic itself. The vehicle thus provided with a lastin adhesive, mastic coating is particularly a apted to act as a ,packing for var ous types of installation, not only because of the waterproofing quality of the mastic but also because of its pronounced and lasting qual ty of adhesiveness and further because" of its plasticity. I

This invention relates to first saturating the vehicles with oils, and other saturants set forth in paragraphs 1 to 1 ofmy Patent No. 1,550,310, and then coating one or both s1des of the saturated vehicle with a bltummous coating, which ordinarily would not adhere except on continued pressure under heat or special treatment at time of laying, the meltin of bituminous matter would not develop ad esiveness below 80, but which might develop adhesiveness above that point, making it impossible to separate the sheets except for dusting or compltely squeezing out excess matters. My invention relates to omitting the dust Application filed August 15,1927. Serial No. 213,190.

and coating the previously coated surface with a slow-drying, tacky adhesive-substance of a bituminous nature, after the first coating has become chilled.

One of the formulas adaptedfor this purpose is'the commercialproduct on the market known as .Tree-tangle' Foot, which has been on the market for approximately fifteen years and which is compounded of resin, vegetable oils, non-drying oils and other gummy substances.- Other coatings which will answer thesame purpose are described as follows:

(a) With a non-drying oil, such as, cotton-seed oil,'rape'seed oil, castoroil etc., acting as a mastic waterproofing filler of the vehicle. It may also form a slow junction with a coating of bituminous or vegetable matter fluxed withoils that will unite with the vehicle filler or with mineral oils which will not unite with the vehicle saturant. The tendency being to keepthe coating in a thoroughly mastic state where the. substances will unite and a pliable state where they will not unite. Castor oil maybe used as the saturant where non-union with mineral oil is preferred, the coating may be a high melting point bituminous or vegetable substance with mineral oils, or the coating may be any combination or flux, mineral, vegetable or animal oils.

. (b) The saturant may be the combination of a bituminous substance and a vegetable oil heated and combined at high temperature producing a viscous saturant. Gilsonite, Texas or other high melting bituminous substances may be used in varying proportions from 10 to 20 per cent, and a viscous oil,'such as pastor, whereunion with other oils is not desirable 80 to 90 per cent. If a blown castor oil is used the proportions may be as high as 5 percent bitumen, gilsonite, Texas or Trinidad and 95 per cent blown castor oil. It may be necessary in some cases to heat under pressure in order to secure union.

(a) Where union with other oils is desired this formula may be bitumen 15 per cent, castor oil 75 per cent, rape oil 10 per cent, united by gradual heating. This formula will unite cotton-seed, Foots pitch or road oil, sludges and semi-liquid, bituminous substances of varying consistencies, such saturants, where treated with an overcoating of a viscous vegetable or combination vegetable and bituminous adhesive will be separable along the lines of such coating.

(e) Drying oils, preferably blown, may be used as the saturant and coated with any of the adhesive, bituminous or vegetable coatings, or drying oils may be mixed with nondrying oils-a formula for the first would be blown soya bean or China wood oilthe sec ond linseed and neats foot, castor etc., per cent each or in varying quantities.

(f) The saturant may be a mastic of per cent kerosene and 20 per cent bitumen, the vehicle when saturated, coated with a viscous oil such as castor, in a combination which will not unite with mineral oils, or other coating or saturant may be utilized.

Higher volatile oilsmay'be used,asnaphtha, turpentine, etc. The use of these saturants is especially suitable for roofing tapes and other purposes where a soft pliable body is desired.

(g) The vehicle may be saturated as heretofore and squeezed to create a dry, non-tacky surface.

. The action of this coating is to remain inert, and while some of the oil may be absorbed by the chilled coating, sufficient will remain so that the surface of the sheet or sheets may be readily separated after a period of months and used for various roofing purposes.

Alternatively, I may omit the dust, as set forth above, and coat the under-surface with a viscous, oily adhesive repellant, which later becomes tack or adhesive; blown castor oil, silicate of so a are adhesive repellants which when set develop adhesiveness.

In the present invention the vehicle may consist of sheets, strips, or shapes of tar paper, felt, fabric, fibers or other preferred material.

The outer coating with which the saturated and coated vehicle is coated on either one or both sides referably comprises a slow-dryin tacky ituminous, vegetable or animal su stance or combination, of two or more, which approximates the following specifications,'or may be more or less fluid.-

(1) The consistency at 77 F. should be below 7.0.

(2) The susceptibility factor shouldbe as low as possible, preferably under 25.

(3) The ductility at 77 F. should be as high as possible and preferably over 25 centimeters.

(4) Fusing point by K & S method should be between 80 and 100 degrees F.

(5) It should appear tacky and adhesive at normal temperature and retain this prop erty as long as possible'on exposure to air.

This formula is merely a standard and other formulas more or less fluid may be used material, mopped on at the time of assembling thematerial. This is especially true in the application of the invention to roofing sheets,

for the purpose of holding the sheets of roofing material in place. It will be understood that after two sheets of building material according to the present invention have been separated, the adhesive surface of one sheet will be placed in contact with the non-adhesive surface of another sheet. The adhesive or mastic will cause a union with nonadhesive surfaces to which it is a plied, which union may be made very excel ent by means of rolling and which will improve in the course of time.

It will also be understood that if it should be found that the adhesive surface of a sheet should become dried out, a solvent such-as toluol, benzol, kerosene, or cotton oil, may be used to bring the sheet back into adhesivestate.

'The subject matter of this application has been withdrawn from my prior patent, No. 1,550,310, issuedAugust 18, 1925.

I claim:

1. Constructional material comprisin a saturated vehicle coated with a waterproo g coating having the characteristics of bein normally non-adhesive, except on continue pressure under heat, and not developing adhesiveness at melting below 80 F., but which is capable of developing adhesiveness above such point, and overcoating said first mentioned coating with a normally lasting adlziesiilrle of slow-drying nature and tacky to the one 2. The method of preparing constructional material which comprises saturating a vehicle, coatin the same with a waterproofing coating whic does not adhere except on continued pressure under heat or special treat:

ment, the melting of which does not develop adhesivenessv below 80 F. but which is capable of developing adhesiveness above that point, fpermitting such coating to chill and therea ter coating the chilled coating with a slow-drying, lastingly adhesive mastic which is normally tacky to the touch.

3. The method of preparing constructional material which comprises saturating a vehicle with a non-drying oil, coatin the saturated vehicle with a bituminous su stance which ordinarily will not adhere except on contin-- ued pressure under heat, and which upon melting does not develop adhesiveness below 80 F., but which is capable of developing coating comprising a bituminous mastic,

slow-drying and lastingly adhesive in nature and sticky to the touch.

4- The process of preparing constructional.

material which comprises saturating a vehicle with an oil and thereafter coating the vehicle with a bituminous substance having the inherent characteristics that it is normally non-adherent except on continued pressure under heat, and having the further characteristics that upon meltin it does not develop adhesiveness below but may develop adhesiveness above that point, permitting said coating to chilland thereafter applying an overcoating of a viscous, oily repellant having the inherent properties of becoming tacky or adhesive to the touch when set 5. The method of preparing constructional material which comprises saturating a vehicle, coating the same with a drying waterproofing layer, and thereafter applying a slow-drying, lastingly adhesive mastic which is normally tacky to the touch.

Signed at Chicago, Illinois, this 9th day of August, 1927.

. ALBERT G. FISCHER.