FR2781419A1 - Method to allow previously masked characters to become visible by contact between two elements or objects relates particularly to transfer of temporary tattoos to parts of the human body - Google Patents

Abstract

Two images are printed on the two faces of the same sheet of paper so that they may then be transferred to two separate objects. The images are in varnish and ink and once applied to the paper a layer of glue is applied on top of them, on top of which is a layer of protective paper. When the paper is removed and the glue layer pressed against an object the image is transferred to the object. The second image may then be transferred to a second object by pressing it against the other side of the paper.

Description

The present invention relates to a method of arrangement and printing

  layers of inks and adhesive allowing pressure to appear between two surfaces, drawings and characters previously hidden and its implementation device. This process finds an application mainly in the technique of temporary tattoos but can be applied to all deposits of drawings or characters by contact between two objects. There are already transfer processes, mechanical, chemical or calorific, which allow the deposition of drawings or characters on a body or an object. However, these transfer methods only allow drawings or characters to be deposited on one body or object at a time or with several transfer actions to decorate several bodies or

objects at a time.

  The device according to the invention makes it possible to discover drawings or characters previously hidden by contact between two bodies or between two objects with appearance on each of the two bodies or two objects of an identical or different design. The first stage of the process consists in placing, by screen printing or any other printing technique, on a sheet composed of material capable of receiving specific inks, one or more layers of varnish or inks, the opacity and surface can vary depending on the desired effect. The adhesion of this layer of ink or varnish is controlled in order to be able to detach from the sheet when the process is stuck on a body or on an object. For example, it will be able to be measured during a peel test at 90 with a value between 10 Nw / cm and 15 Nw / cm. It is notably weaker than the capacity of adhesion on the

  body and on the object, glue which is then applied.

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  The second step consists of placing on the layer of ink or varnish applied during the first step, a layer of glue whose adhesive power is significantly higher than the adhesive power of the inks on the sheet. In our example, in the peel test at 90, it is at a value between

Nw / cm and 60Nw / cm.

  The third step consists in protecting the face of the sheet covered with glue and inks by a sheet provided to have a refusal of adhesion to the glue sufficient to not cause the detachment of the inks from the sheet. In our example, the adhesive power of the protective sheet had a value in the peel test at 90 '

between 2 and 5 Nw / cm.

  The fourth step consists in placing a layer of varnish or inks on the side which has not yet been treated.

  opacity and design can vary depending on the desired effect.

  This layer of ink and varnish may have the same variation in characteristics as the variations in

  characteristics applied during step 1.

  The fifth step is to put on the layer of varnish and inks put in step 4, a layer of glue whose adhesive power is significantly higher than the

  adhesive power of inks and varnishes applied during step 4.

  The sixth step consists in protecting the second face of the sheet which received during step 4 and step 5 ink and glue by a sheet provided to have a sufficient adhesion refusal to the glue so as not to cause the inks to peel off from the sheet. In our example, the adhesive power of the protective sheet had, in the test

  peeling at 90 ', a value between 2 and 5 Nw / cm.

  Then, we obtain a support composed of a sheet covered on each of its faces with drawings and characters according to the desired effect, covered with glue and a sheet of

protection.

  By a voluntary operation, after removing the protective sheet on one side, we stick the product on a body or an object. The second protective sheet is removed. The body or object is brought into contact with the

  sticky surface with a second body or second object.

  After separation of the two bodies or of the two objects, one obtains a design or identical or different characters according to the desired effect on each of the two bodies or each of the two

objects.

  We can cite as an example the following realization: In a first step, we put on sheets of polystyrene type Robex 515 PH 120 microns, varnishes and inks of Sericol brand, specially prepared to make temporary tattoos and whose adhesion is controlled. In a second step, we covered the varnishes and inks with a VVQ07 glue of the Sericol brand, specially prepared for tattoos and whose adhesion power on the skin is significantly stronger than

varnishes and inks.

  In a third step, we protected the glue applied during the second step with a sheet covered with

  silicone, allowing that there is no adhesion of the glue.

  In a fourth step, on the other side, we reproduced the same operations as in step 1, then

step 2, finally from step 3.

  We then obtained a sheet whose two sides were marked with drawings and characters, covered with

  glue and protected by a sheet of silicone paper.

  A first person, after removing the silicone protective sheet, placed the sheet on his shoulder, next to the glued side. At this stage, she could not yet distinguish the design from the temporary tattoo that she had on her shoulder. After removing the second protective sheet, she established skin-to-skin contact where the product was placed. After separation and removal of the sheet, each person saw a temporary tattoo appearing at the place of contact, the drawings of which

could differ.

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  A variant of the process makes it possible to vary the adhesion capacity of the inks or varnishes on a defined and voluntary part of the drawings and characters. We will therefore obtain on this delimited part of the drawings and characters an adhesive power of inks and varnishes with polystyrene sheet significantly stronger than the adhesive capacity of the glue on the body or on the object. Thus the body or object A or B will not receive at the delimited and voluntary place the drawings or characters whose adhesion to the polystyrene sheet has been reinforced. In this variant, it is possible to eliminate the easily discernible characteristics of identification of this voluntary capacity for stronger adhesion. It will therefore be possible to introduce an element of games or chance into the reception by bodies or by objects, drawings or characters. Another interesting variant of the process consists in making a product by carrying out the five steps in a similar manner to the first process described above. The sixth step consists in placing a sheet on the glue applied during step 5, the side of which is used for a controlled adhesion refusal of adhesion and the other side of which can receive inks and varnishes similar to those applied during stage 1 and stage 4. The seventh stage consists in repeating on this face the operations carried out during stage 4, 5, 6. The seventh stage can be repeated as many times as desired according to the desired effect . The last step consists in placing on the last layer of glue applied, a protective sheet identical to that posed in step 4 and 6. We will take care to check the adhesive capacity of the inks and varnishes and of the glue relatively to each other. compared to the others according to their arrangement on the faces of the sheets used successively and thus to obtain a controlled order of separation of the layers of inks and the sheets according to the desired effect. A product is then obtained consisting of successive layers of glues, varnish and inks and sheets, the successive contact with two bodies or objects will cause the installation

  successive images according to the desired effect.

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  The accompanying drawings illustrate the invention. FIG. 1 presents the process before the action of contact with a body or with an object. The sheet (1) is the polystyrene sheet. On the face (1.1) of the sheet (1) are placed the inks and varnishes (2) reproducing the designs and character

  desired. Glue (3) is placed on these drawings and characters.

  The silicone sheet (4) is placed on the glue to provide the necessary protection. On the other side (1.2) of the polystyrene sheet are applied varnishes and inks (2) to reproduce the desired designs and characters which may be similar or different from those placed on the layer (2). The glue (3) is then placed, covered with the silicone sheet (4) as protection. FIG. 2 presents the process, after the laying of the process first on a first body or a first object (A). The silicone sheet (4) has been removed to allow the glue (3) to adhere to the body or object A Figure 3 shows the process at the time of contact of the body or object A with a body or object B after removal of the sheet silicone (4) Figure 4 shows the process after the action of separation of the

  body or object (A) of the other body or other object (B).

  Each of the bodies or each of the objects (A and B), are found

  marked by the design or character (2) and (2).

  FIG. 5 illustrates the variant where the drawings 2 and 5 are different. FIG. 6 shows the method according to the variant in which the adhesive capacity of the inks and varnishes (2) and (5) has been made stronger than that of the glue (3) and will therefore cause the

  lack of transfer of part of the inks (2) and (5).

  FIG. 7 shows the variant applied with a succession of layers of varnish and of adhesives (2) and (3) on the faces of the

sheets (1) and (7) and (8) and (9).

  FIG. 8 shows the variant of the process during the separation of the first body or object (B) with the possibility of contact of a third body or object on the adhesive (3) which has been

  discovered by the separation of the body or object (B).

Claims (4)

  1) Method for carrying out image transfer, characterized in that, to allow two images to be transferred onto two separate supports, these two images are printed on the two sides of the same sheet, 2) Method according to claim (1) characterized in that an image (2) is printed on each of the two faces of a sheet (1) with inks and / or varnish, then these images are covered ( 2) with an adhesive (3) and finally with a protective layer (4), the adhesion of the images to be transferred (2) on the sheet (1) being weaker than the adhesion of the adhesive (3) on the supports (A and B) intended to receive the image 3) Method according to claim 1 characterized in that the adhesion of inks and varnishes can be modulated up to   become stronger than the adhesion of glues.   4) Method according to claim 1 characterized in that the adhesion of all or part of the surface of the image (2) to the sheet (l), can be made stronger than the adhesion of the glue (3) to the supports (A) and (B) and thus allow the selected drawings and characters of the image (2) not to stick not on supports \ A) and (B).   ) Method according to claim 1 characterized in that several layers of glues, varnish and / or inks and protective sheets are applied successively with a controlled adhesive capacity allowing a successive detachment of the different layers.