US1898993A - Nonreusable decalcomania - Google Patents

Description

Feb 21,1933. 6. R. MEYERCORD 3 9 IOIIRBUSABL! DICALCOIANIA H104 June 15; 1932 j'/e fi%?-r 6222 aye Ewen cord STATES PATENT FFICE GEORGE E. MEYERCORD, OF CHICAGO, ELINOIS, ASSIGNOR Tb THE 'MEYERD 60., Er CORPORATION OF ILLINOIS NONREUSABLE DECALCOMANIA Application filed June 15, 1932. Serial No. 617,814..

Decalcomanias are sometimes employed as revenue stamps on to evidence other payments to governmental bodies. For example, in some states revenue stamps in the form of small decalcomanias are applied to cigarette packages. Although decalcomanias, when properly applied, cannot be salvaged without great difiiculty, and thus be used over again, it is not impossible to detach them from the wrappers of regenerated cellulose film such as is known, for example, by the trade name,

Cellophane. The object of the present invention is so to construct a decalcomania that the operation, which would otherwise separate it in an intact condition from a surface to which it has been transferred, will result in so marring or damaging the paint or ink film that it can not successfully be used a second time.

The amount of ink required to print a fiat I subject or design is so-small that it will not produce a self-supporting film and, therefore, it is customary either to print over the completed design with, white ink until a relatively thick binding coat or backing is produced or to print the binding coat and backing first and then print the subject or design on top of that. So long as the binding coat or backing remains intact the subject or design will hold together; but, if a part of the binding coat or backing be destroyed, the corresponding portion of the subject or design will also be destroyed.

Therefore, in accordance with my invention, I so build the binding coat or backing that it will possess the requisite strength to permit a successful transfer to be made; but, after the adhesive that holds it in its position of final use has set or dried. any attempt to peel the decalcomania oif will result in breaking or tearing the binding coat or backing and consequently in irreparable damage to the subject or design.

The various features of novelty whereby my invention is characterized will hereinafter be pointed out with particularity in the claims: but. for a full umlcrstandingof my invention and of its objects and advantages, reference may be had to the following detailed description taken in connection with the accompanying drawing, wherein:

Figure 1 is a plan view of a decalcomania of the type printed face up in the condition in which'it is after the binding coat has been to printed on the gummed surface of the paper support; Fig. 2 is a View similar to Fig. 1, of the completed decalcomania; and Fig. 3 is a section on line 33 of Fig. 2, on a greatly magnified scale, only a fragment of the deea calcomania being shown.

Referring to the drawing, 1 represents a sheet of paper or other suit-able material such as is commonly employed as a carrier for decalcomania films; the same having 6 on one face a gum coating 2 that is soluble in water. On this gum coating I print a thin layer 3 that serves as the background and binding layer of the transferable film. 0n the binding coat or backing layer I print the subject or design 4. What I have just described is an ordinary decalcomania printed face up, whose ink film, composed of the lay ers 3 and 4., is adapted to become separated from the paper sheet, upon wetting the latter; enough of the gum of the gum coating on the paper remaining on the ink film to permit the latter to be securely united to a surface to which it is transferred.

In accordance with my invention, 1 so form the printing plate with which the bind ing coat or layer is printed that this coat or layer is weakened in one or more places so that, if it be attempted to peel ofi the film after it has been transferred, the bindingcoat or layer will break or tear at the weakened point or points, at the same time tearing or breaking the thin layer embodying the sub ject or design. I have found that suflicient provision to make it impossible successfully to salvage a transferred decalcomania film is afforded by forming in the binding coat or backing layer a series or line of holes 5 distributed to form a border lying at some distance inwardly from the edges of the ink film. In actual practice, in the case of ink films about half an inch wide and three-fourths of an inch long, I have successfully employed a single line or row of holes or perforations about a thirty-secondth ofan inch in diametor and spaced about one diameter apart; the holes or perforations bein distributed in the form of an oval ring. A ter the perforated binding coat or backing layer has been laid down, the subject or design is printed in the usual way, so that the only difl'erence over the ordinary process of producing decalcomanias of the face-up type is in the plate or lates for printing the binding coat or bac ing layer so as to leave the latter with weakened sections or areas.

When it is attem ted to peel off the decalcomania after it has been transferred as, for example, by forcing a razor edge between the ink film and the supporting surface, the peeling may progress until the line of holes is reached. At this point, however, the resistance to lifting of the film is greater than the strength of the weakened portion of the backing, and therefore the backing will break or tear and the subject or designwill be destroyed or at least marred to such a degree as to revent the reuse of the device.

While I have illustrated and described with particularity only a single preferred form of my invention, I do not desire to be limited to the exact structural details thus illustrated and described; but intend to cover all forms and arrangements which come within the definitions of my invention constituting the appended claims.

c aim:

1. A decalcomania having a film to be transferred composed of a backing layer and u a laver embodying the subject or design, the

backing layer having weakened parts to cause the film to be destroyed if it be at- ;elrrigtled to peel it 05 after having been trans- 2. A decalcomania having a film to be transferred composed of a backing layer and a layer embodying the subject or design, said bacln'ng layer having 0 nings therethrough.

3. A decalcomania aving a film to be transferred composed of a backing layer and a layer embodying the subject or design, said cation.

GEORGE R. MEYERCORD.

backing layer having a line of openings therethrough forming a border disposed a short distance within the periphery.

4. A decalcomania comprising a carrying sheet provided with a gum coating, a transferable film adhering to the said coating, said film consisting of a backing layer and a layer embodying the subject or design, and there .ing numerous perforations throu h the backing layer.

5. decalcomania comprising a carrying sheet provided with a gum coating, a transferable film adhering to said coating, said consisting of a backing layer in contact.

with said coating and an overlying layer embodying the subject or desi ,and there being a hne of openings in ti: backing layer formin a border spaced apart from the 'odgeo thefilm.

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