US1789285A - Constructional material - Google Patents

Description

Patented Jan. 13, 1931 UNITED STATES. PATENT OFFICE ALBERT C. FISCHER, OF CHICAGO, TLLINOIS, ASSIGNOR TO THE PHILIP CAREY MANU- FACTURING COMPANY, A CORPORATION: OF OHIO QONSTRUCTIONAL M:A'JIFERIAL No Drawing. Application filed. August 15, 1927, Serial No; 213,183. Renewed July 14, 1930.

' This invention relates to constructional material, such as roofing material, insulating material, tapes, shingles, packing and the like. I

The object of my present invention is to provide such constructional materials with an adhesive coating which is normally sticky or tacky to the touch" and which lastingly maintains this mastic condition whereby the material maybe packed and stored for long periods of time without losing its tackiness and may be transported to its place of installation and used in such tacky condition Without further treatment.

A further object of my invention'resides' in the application of this normally lastingly adhesive, sticky to the touch, to sheets or strips of carrier material, hereinafter called vehicles, so that when rolled into package form or placed face to face in'contact with a similarsheet for packing and storing "and transportation, they may be unrolled or pulled apart readily without tearing or'fdamaging, and can be installed in tacky. condition; in this instance the tacky co'ating'permits the facile separation of the contacting vehicle surfaces, the line ofcleavage passing through the mastic itself. The vehicle thus provided with a lasting adhesive, mastic coating is particularly adapted to'act as a packing for various types of installation, not only because of the waterproofing quality of the-Inastic'but also because of its pronounced and lasting. quality of adhesiveness and further because of its plasticity.

A further object of my invention 'resides in the utilization of a drying oil for saturating the vehicle, which provides such ve-- hic le with a waterproofing filler, thus preventing not onlythe access of air to the oil constituent on the mastic, lastingly adhesive coating, with which the saturated vehicle is coated, but also-prevents the deep penetration of the oil of the coating into the v vehicle and prevents the drying out of the oil in the coating, whereby the coating is "maintained normally tacky, sticky to the touch, soft and pliable for long periods of time; practically indefinite.

In-the present invention the vehicle may consist of sheets, strips, orslabs of tar paper, felt, fabric, fibers or other preferred 4 material.

In the present invention the saturant for 'i the vehicle consists of a drying oil, such as soya bean or China wood oil, preferably are normally mastic and tacky and sticky to the touch- Thedrying oils may be mixed with nondrying oils. Such a formula would be linseed, neats foot, castor oil, etc., fifty (50) per "cent each or in varying quantities, Where I use blown drying oil the formula vnu1d. be soya bean or China wood oil.

Drying oils may be used for thereason that the application of adhesive thereto prevents'access of air, whereby drying is retarded to a practical extent. Said oil acts v as a waterproofing filler for the vehicle. The

saturated vehicle may then have applied thereto an adhesive which may be of any preferred kind. The fact that the vehicle is saturated with the oil will prevent the deep penetration of the adhesive into the body of the vehicle and at the same time/the oil will prevent the drying out of the adhesive,

whereby said adhesive will continue for long periods of time in its mastic state.

The coating with which the vehicle is thus saturated on either one or both sides preferably comprises a slow drying, tacky bituminous substance, which approximates the following specifications, or maybe more or less 2. The susceptibility factor should be as low as possible, preferably under25.

3. The ductility at 77 degrees F. should be as high as possible and preferably over 25 centimeters. Y 4. Fusing point by K 8Q S method should be between 80 degrees and 100 degrees F.

5. It should appear tackyand adhesive at normal temperature and retain this property as long as possible on exposure to air.

This formula is merely a standard and other formulas more or less fluid may be used with or without a suitable filler as a flow retarder, or the flow tendency may be stopped by using a non-flowing gummy substance in combination. v

It will be understood that my invention contemplates constructional material, the ad- .liesiveness of which serves to hold said material in lace in distinction to other materials whic involve the use of pitch, or other material, mopped on at the time of assembling the material. 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 ofbuilding 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 uon adhesive surfaces to which it is applied, which union may be made very excellent by means of rolling and which will improve in the course of time. It will also be understood that if it should go he 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 adhesive state.

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

I claim: 1. constructional material comprising a 40 vehicle saturated with a drying oil and coated with a waterproofing, mastic substance,

normally sticky to the touch and lastingly adhesive.

2. Construction material comprising a ve- 5 hicle saturated with a blown drying oil and coated with a waterproofing, mastic substance, normally sticky to the touch and lastingly adhesive. I

3. Constructional' material comprising a 5 vehicle saturated with a 'inixture of drying and non-drying oils and coated with a waterproofing, mastic substance, normally sticky to the touch and lastingly adhesive.

Signed at Chicago, .Illinois, this 9th day 5g; of August 1927. I

ALBERT C. FISCHER.