US2100140A - Decalcomania - Google Patents

Description

Nv.23, 1931. FWHUMPHNER k2,100,140

DEcALcoMANIA Filed Jan. 1'5, 193e Patented Nov. 23, 1,937

UNITED STATES PATENT oFFlcE micnLooMnNm Ferdinand W. llumphner, Oak Park, lll., assignor, by mesne assignments, to Mid-States Gummed Paper Co., a corporation ol' Delaware Application January 15, 1936, Serial No. 59,318

' z claims. (cnil- 33) This invention relates to a decalcomania and more particularly to a decalcomania which is engraved. f

An object of the invention is to provide a decalcomania which is adapted to be used as a tax stamp, liquor label, revenue seal, etc., and which minimizes the possibilities of counterfeiting. A further object is to provide a decalcomania which is so prepared as to permit a steel engraved print to be formed thereon. Other specific objects and advantages will appear as the specification proreproduction, or by other methods of counterfeiting. However, because of the peculiar character and construction of` decalcomanias,` I find that it is necessaryto make certain changes and modifications vto enable the steel engraving operation to be carried out effectively.

l In the rst place, the paper must contain enough moisture to withstand ythe impressions i made by the steel `die press` and to permit the desired stretching of the `paper under the pressure exerted. rThe paper should have the makiduring the operation while also permitting movement of the fibers into the fine lines of a steel engraving without cutting of the paper base.

Preferably, thev paper should be a loose, wellformed bulky sheet of unsized paper. I have found that a standard decalcomania finish, upon which very littlepressure has been applied by calendering, or other means, is suitable. -The paper may be coated with the usual starch coating and adhesive coating.

The adhesive may be of the usual Vtype employed in decalcomanias. I have found it highly desirable, however, to `add more than the normal amount of vglycerine in the adhesive which provides the extra moisture needed to permit the maximum stretching of the paper. Ialso prefer mum of fiber bulk which will provide a cushion to add a vegetable wax, such as japan wax, to the adhesive to reduce tackiness in the adhesive.

After the base and the adhesive thereon have been prepared, as described above, the lacquer or ink film is formed on the adhesive. In view of the well-known method-of forming decalcomania bodies by ink, it is believed unnecessary to describe the process. If the transfer body is formed by a lacquer, I prefer to use a lacquer whichy is exible and yet which will retain its form when removed from the paper base so as to provide a satisfactory transfer body. 'I'he film of ink or lacquer laid on the adhesive should be of suiiicient thickness to provide a removable and `flexible lm and also to receive the final imprint of the steel die press.'

While the paper takes the embossing of the l steel die and shows the design on'the paper side when it is submerged in Water to release the film, the paper again takes its normal shape and the film is released, thus providing a steel die engraving decalcomania transfer for stamp purposes.

While in the foregoing description I have set forth certain preferred conditions, it will be understood that such preferred conditions are given for thev purpose of illustration and that many"` changes can be made without departing from the spirit of my invention.

The foregoing detailed description has been given for clearness of understanding only, and

no unnecessary limitations should be understood i l a Water-soluble adhesive thereon, said adhesive containing glycerine and japan wax, a transfer body on said adhesive, and a steel engraving print on the top of said transfer body.

FERDINAND W. HUMPHNER.

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