FR2793439A1 - Manufacturing double sided label with ultraviolet polymerizable varnish between two printable media, involves applying tension to media which is different and one medium is translucent - Google Patents

Abstract

A double sided label is manufactured by applying greater tension to the first medium than the second medium, applying an ultraviolet polymerizable varnish to one of the media, then bringing the media together with the varnish between them and irradiating the varnish through the translucent second medium. A double sided label is assembled from a self-adhesive first printable medium and a second translucent detachable printable medium. It is manufactured by applying greater tension to the first medium than the second medium, applying an ultraviolet polymerizable varnish to one of the media, then bringing the media together with the varnish between them and irradiating the varnish through the translucent second medium. The second medium is printed on both sides. An Independent claim is included for a double sided label made as above.

Description

<B> The invention relates to a method for printing and manufacturing <B> <B> a double <B> label <B> consisting of a first printing medium </ B> <B>, optionally <B> type <B> self-adhesive, and a second <B> <B> detachable print media. This invention also relates to a double <B> <B> tag obtained through the <B> en </ B> <B> work of this method. </ B> / B>

<B> Such a method will find its application in the field of the <b> manufacture of double labels defined by two superimposed labels, one of which, superior, is intended to be detached. </ B>

<B> We already know such double <B> labels <B> defined by a superposition of two </ B> labels, <B> a lower one </ B> <B > and the other upper, made integral with each other, according to the case, by means of an adhesive tape and / or a <B> <B> dotted type link. </ B>

<B> It will be observed that <B> such means of </ B> solidarization <B> present, </ B> <B> in reality, a number of disadvantages when it comes < / B> <B> to detach the top label. In this connection, we will observe that this detachment, on the one hand, is particularly delicate and impractical, and on the other hand, > translated </ B> frequently <B> by tearing one or the other of these </ B> <B> tags. </ B>

<B> As regards the upper label, intended to be <B> <B> detached, it has, on at least one of its faces, a </ B> <B> information intended for to be viewed by a reported user </ B> and, in particular by printing, on that <B> top <B> tag. In this regard, the latter may include information that can be accessed both from one side and from the other side. In such a case, it is customary to ensure the presence of information at the level of each <B> side of the <B> detachable <B> tag by performing </ B> <B> successively and necessarily, an impression on the front then, <B> in particular <B> after reversal, on the back of said upper label <B> detachable. </ B>

<B> It is then a matter of reporting the latter on the lower label by means of specific means which, during the detachment of said upper label, do not cause no degradation to the printed information it contains. Such means are, for example, in the form of a special coating affixed to said detachable label or as an adhesive specifically adapted to such use.

The production of such a double label thus has a certain number of relative disadvantages, on the one hand, with the printing, successively, recto-verso, of the detachable label and, on the other hand, with the use of a specific adhesive to ensure the reversible attachment of the latter.

The present invention makes it possible to overcome the drawbacks of double-label manufacturing processes known in the state of the art through a new particularly inventive method.

For this purpose, the present invention relates to a method for printing and manufacturing a double label consisting of a first printing medium, possibly of the self-adhesive type, and a second detachable printing medium, characterized by the fact that

imposing a different surface tension on the first and the second printing medium so that said surface tension of the first printing medium is greater than that of the second printing medium;

- Between the two print media is applied a layer of a varnish polymerizable by ultraviolet radiation;

- It has, above the first print medium, said second printing medium defined by a translucent material, preferably transparent;

the polymerization is carried out, by transparency through the second printing medium, of the layer of varnish by ultraviolet radiation;

an impression is made of said second print medium for the definition, at the level of the latter, of information, part of which is visible on the front and of which another part is searchable, by transparency, on the back of said second medium after detaching the latter from the first printing medium.

According to a first feature of the invention, the difference between the surface tensions of the two print media is imposed through the choice of materials of the latter.

Another characteristic relates to the fact that the difference between the surface tensions is imposed, either by ensuring the presence of electrical charges at at least one of said printing media, or by covering at least one of these by a layer of a material suitable, as the case may be, for increasing or decreasing said surface tension.

According to another particularity, a higher surface tension is imposed on the first printing medium by ensuring, at the level of the latter, the presence of electric charges by Corona effect.

Another feature is that the difference between the surface tensions of the two print media is greater than 1 mN / m, preferably 4 mN / m.

According to another feature of the present invention, one proceeds to the printing of at least one side of the first print medium, after having imposed, to the latter, a surface tension greater than that of the second medium before applying the polymerisable varnish.

In fact, it will be observed that the polymerizable lacquer layer is applied to the first printing medium.

According to another characteristic, during the application of the varnish, is defined at the level of the first and / or second printing medium, a portion free of varnish to facilitate the detachment of said second print medium.

Another particularity relates to the fact that, during the printing of said second translucent or transparent printing medium, the printing of the part that can be consulted on the back and by transparency is first made before printing. the portion visible on the front, between those impressions being, optionally, provided printing a background for rendering opaque the second print medium.

The present invention also relates to a double label obtained by the method described above, such a double label consisting of a first printing medium, possibly of the self-adhesive type, and a second detachable printing medium, characterized by the fact that

the first printing medium has a surface tension greater than that of the second printing medium;

- This second printing medium is disposed over said first print medium, between these two printing media being interposed a layer of varnish of the polymerizable type ultraviolet radiation;

said second printing medium, on the one hand, is defined by a translucent material, preferentially transparent, and, on the other hand, has a face on which is reported, by printing, at least one layer defining information able to to be consulted, in part, from the front of said second support and, in part, from the back of the latter and by transparency.

According to another feature, the first print medium of said double label has two sides, at least one of which receives, by printing, at least one layer defining information, said layer being covered by a varnish at least on the side on which is disposed said second print medium.

An additional feature is that the second print medium of said double label has a detachment tab and, between it and said first print medium, the latter has a varnish-free portion.

The advantages of the present invention relate to the fact that, by imposing on the first printing medium a surface tension greater than that of the second printing medium, the connection between said first printing medium and the polymerizable varnish is reinforced at the expense of the link between the latter and said second print medium. This allows, advantageously, during the detachment of the second printing medium, to prevent tearing and / or tearing of the varnish, the latter remaining fixed on the first print medium. Such a fixation allows, when the latter includes printed information, an effective protection of the latter.

Another advantage of the present invention is that said second print medium is translucent or, preferably, transparent. This makes it possible, by printing only on the front of said second print medium, to define information, part of which is visible on the front and another part of which can be consulted, by transparency, on the back of said second print medium. In addition, the protection of this information, for example by the introduction of a protective film, can, in such a case, be performed only at the front of said second print medium knowing that this information is, d ' already protected on the back side by the second printing medium itself.

Other objects and advantages of the present invention will become apparent from the following description relating to an embodiment which is given by way of indicative and non-limiting example.

The understanding of this description will be facilitated by referring to the attached drawing in which

- Figure 1 is a schematic view, in section and from the side, of a double label obtained by the printing and manufacturing process according to the invention;

- Figure 2 is a schematic perspective view of a double label for which the second print medium is partially detached;

- Figure 3 is a schematic view of the installation for implementing the method according to the invention. As can be seen in the figures of the attached drawing, the present invention relates to the field of the manufacture of double labels. In a manner known per se, such a double label 1 comprises, on the one hand, a first part 2 intended to be attached to a support, in particular via adhesion means 3.

This double label 1 comprises, secondly, a second portion 4 secured to the first portion 2 and being designed to be detached from the latter.

It should be noted that such a double label 1 is designed capable of providing a user with information 5, 5A, 5B, the latter 5A, 5B being searchable, essentially, at the level of the second detachable part 4 but, possibly again 5, at the level of the first fixed part 2.

In fact, the presence of such information 5, 5A, 5B is ensured by performing printing of said first fixed part 2 and second detachable part 4.

For this purpose, said first part 2 comprises a first printing medium 6, possibly of the self-adhesive type, while the second detachable part 4 is, in part, defined by a second printing medium 7.

As can be seen in FIGS. 1 and 2 of the appended drawing, the first part 2 of the double label 1 then comprises a first printing medium 6 defined by a band or at least a band portion 8 made of a synthetic material. , especially polyethylene.

Such a band or the like 8 has, in fact, two sides 9, 10 one of which 9 constitutes the back 11 of said first print medium 6. It is, more particularly, this back 11 which is capable of receiving said means adhesion 3 adapted to allow the attachment of said double label 1 on any support.

In this regard, it will be observed that such a support is, for example, in the form of a paper web or the like, in particular of silicone type, on which is fixed, provisionally and pending its fixing on a support definitively, the strip or the strip portions 8 corresponding, in part, to said double label 1.

The other side of said strip 8 or the like is then the front 12 of said first print medium 6.

As mentioned above, said double label 1 comprises, again, a second part 4 defined, at least in part, by a second printing medium 7 which, again, takes the form of a band or at least a portion of band 13 which, too, has two sides 14, 15, one of which 14 constitutes the front 16 of said second print medium 7 while the other 15 constitutes its backside 17.

As can be seen more particularly in FIGS. 1 and 2 of the appended drawing, said double label 1 receives, applied between the first 6 and the second 7 printing medium, a layer 18 of a varnish 19 that can be polymerized by ultraviolet radiation.

In fact and according to a preferred embodiment, said layer 18 of varnish 19 is applied directly to the front 12 of the first printing medium 6. However, according to another embodiment, said layer 18 may, again, be applied at the back 17 of said second print medium 7.

According to another characteristic of the present invention, this second printing medium 7 is defined by a strip or at least a band portion 13 made of a translucent material, preferably transparent, of synthetic material type, for example polyethylene.

Such a material makes it possible, in fact, after having disposed said layer 18 of varnish 19 sandwiched between the first printing medium 6 and the second printing medium 7, to illuminate through the latter, by translucency or transparency, and by means of a lamp emitting ultraviolet radiation, said layer 18 of varnish 19 to allow its polymerization. Through this polymerization, it is, in fact, achieved the fixing of the second printing medium 7 on the first printing medium 6.

As can be seen in FIG. 1, said first printing medium 6 may, according to one particular embodiment, comprise information that can be consulted from the front 12 of said first print medium 6, and this, in particular after removal of the second print media 7.

The presence of such information 5 can be ensured, for example, by printing on the front 12 of said first print medium 6, in particular by placing on the latter a layer 20 of an ink, the latter being preferably capable of being polymerized by ultraviolet radiation.

It is, more particularly, this layer 20 which, after polymerization, defines said information 5 and is intended to be covered by the layer 18 of varnish 19.

As can be seen more particularly in FIG. 2, the second printing medium 7 is intended to be detached from the first printing medium 6. In this respect, it will be observed that during such detachment and since the presence of said layer 18 of varnish 19, the latter may be susceptible to tearing so that a portion is found on the first printing medium 6 while another part is found on said second support of printing 7.

In fact, such a tearing is undesirable and must, in the presence of a layer 20 corresponding to an information attached to said first printing medium 6, be absolutely avoided, otherwise the deterioration of said information 5 may be jeopardized. In order to avoid such a tear, it is advisable to favor the fixing of said layer 18 of varnish 19 on one of the two printing media 6, 7. Thus, in the following description, it will be more particularly reported embodiments in which this layer 18 of varnish 19 is preferably fixed on said first print medium 6, knowing, of course, that the present invention is not limited thereto.

Also, in order to promote the attachment of this layer 18 to the first print medium 6, the latter has a surface tension greater than that of the second printing medium 7.

According to a first embodiment, the difference between the surface tensions of the two print media 6, 7 is obtained through the choice of the materials of the latter 6, 7.

According to another embodiment, in particular adapted to the case where the two printing supports 6, 7 are defined in identical materials, the difference between the surface tensions is obtained by ensuring the presence of electric charges at the level of one at least one of said printing media 6, 7. In particular, it is possible to electrically charge by Corona effect said first print medium 6.

Another embodiment consists in covering at least one of the two printing supports 6, 7 with a layer defined in a material suitable, as the case may be, for increasing or decreasing the surface tension.

Of course, the solution of electrically charging or covering at least one of said print media 6, 7 is conceivable whether or not they are defined in an identical material.

 Thus, the fact of defining, at the level of the first printing medium 6, a surface tension greater than that existing at the level of the second printing medium 7, allows, during the detachment of the latter, to said layer 18 of the varnish 19 to remain attached to said first print medium 6.

As a corollary, it should be observed that increasing the surface tension of said first printing medium 6 advantageously makes it possible, in the case of the application of a layer 20 of a polymerizable ink, to facilitate fixing and maintaining the latter on said first print medium 6.

As mentioned above, the second part 4 of said double label 1 is capable of receiving a piece of information 5A, 5B, part 5A of which is visible on the front side 16 and therefore another part can be consulted, by transparency, at verso 17 of said second print medium 7 after detaching the latter from the first print medium 6.

For this purpose, this second printing medium 7 receives, at the front 16 of the band 13 which defines it, a first layer 21 which, by printing, defines a piece of information 5A which can be consulted from the back side 17 of the second printing medium 7 and this by transparency. Such a layer 21 may be constituted by an ink capable of being polymerized under ultraviolet radiation.

On top of this first layer 21, said double label 1 receives a second layer 22 able to define information 5B intended to be consulted from recto 16 of said second printing medium 7.

In addition, between the first layer 21 and the second layer 22, it is possible to insert a third layer 23 capable of defining a base for rendering said second printing medium 7 opaque.

Again, said second layer 22 and said third layer 23 may be constituted by a polymerizable type of ink, especially under ultraviolet radiation.

Referring now to Figure 2 in which it is visible that said second print medium 7 has a release tab 24 for facilitating removal of said second print medium 7 detachable. In this regard, it will be observed that, at the level of the first 6 and / or the second 7 printing medium, between the latter, said double label 1 has a portion 25 free, at least in part, of varnish 19. Such a mode embodiment allows, obviously, a better grip and better detachment of said detachment tab 24.

According to another characteristic of the present invention, said layer 18 of varnish 19 is defined so that after removal of said second printing medium 7, the back 17 of the latter and the front 12 of said first print medium 6 are <B> devoid of means of adhesion so as to prevent the fixation of <B> <B> any <B> of said print media 6, 7, on the one hand, on <B> the other of said print media 7, 6 and, on the other hand, on any </ B> <B> support </ B>. <B> In fact, the second detachable print medium <B> 7 defines, preferably, a <B> flying label <B> that can not be attached, to again, by adherence. </ B>

<B> The present invention further relates to a method for printing and manufacturing a double <B> 1 <B> 1 <B> <B> <B> <B> <B> <B> <B> <B> <B> <B> <B> <B> by a <B> first <B> print media 6, </ B> <B> optionally self-adhesive type, and by a second </ B> <B> removable </ B> printing medium <B> 7. </ B>

<B> There are several steps in such a process, the first of which is to impose a <B> different surface tension on the first <B> <B> and the second </ B> support </ B> B> 7 so that said <B> <B> surface area of the first print medium 6 is greater than the <B> <B> of the second print medium 7. < / B>

<B> According to a <B> first <B> embodiment, the difference between the </ B> <B> surface tensions of the two print media 6, 7 is imposed </ B> <B> at through the choice of the materials of these. </ B>

<B> Another embodiment consists in imposing such a <B> <B> difference between said surface voltages by ensuring the <B> <B> presence of <B> electrical charges <B> at the level of at least one of the said <B> <B> print media 6, 7. </ B>

<B> In this regard, it will be noted that <B> according to a preferred embodiment <B> <B> <B> <B> <B> <B> <B> <B> <B> <B> <B> </ B> B> print support 6 by ensuring, at the latter, the </ B> <B> presence of electric charge by effect </ b> Corona.

<B> It is obvious that it is also possible to impose a surface tension greater than the first print medium 6 by ensuring, at said second medium, 7, the <B> <B> presence of electric charges, <B> with <B> of opposite sign, <B> through appropriate means. </ B>

<B> The difference between the surface tensions can still be <B> <B> imposed by covering at least one of said printing media <B> 6, 7, by a layer of a <B> material <B> suitable, as the case may be, to </ B> increase or <B> decrease said surface tension so that <B> the latter </ B> <B> is always greater for the first print medium 6 than for the second print medium 7.

<B> It will be observed that ensuring the presence, as the case may be, of <B> electric charges <B> or a layer of suitable material, </ B> < B> allows, in fact, <B> to impose <B> a difference between the surface </ B> <B> <B> 6 <B> and the second print medium 7 voltages, by </ B> <B> example in the case where the last two 6, 7, are defined in an identical </ B> <B> material </ B>. <B> It will be observed, however, that <B> such a mode of </ B> <B> achievement may, again, be considered </ B> when <B> deals with </ B> <B> different materials in </ B> view, <B> for example, to accentuate the difference </ B> <B> between these surface tensions. </ B>

<B> In this connection, it will be observed that good results can be <B> obtained for a difference between said surface tensions </ B> <B> greater than 1 </ B> mN / m <B > but </ B> that <B> this difference is, preferably, <B> <B> equal to 4 </ B> mN / m.

<B> In a second step of this process of printing and <B> <B> manufacturing, one <B> applies, <B> between the two print media 6, </ B> 7 , <B> a layer 18 of a radiation-curable polish 19 </ B> <B> ultraviolet. </ B>

<B> In this respect, it will be observed that, when applying said <B> <B> varnish 19, it is defined, at said first 6 and / or second </ B> 7 support of printing, a portion free at least in part of <B> of varnish 19 to facilitate the gripping and detaching of said second printing medium 7. </ B>

<B> According to a preferred embodiment, this layer 18 of </ B> <B> varnish 19 is preferably applied to the <B> first <B> support </ B> <B> of printing 6 without this constituting any <B> restriction to the present invention. </ B>

<B> Another feature of this process is that, <B> <B> before applying <B> said polymerizable varnish 19 </ b>, <B> one proceeds to <B> Printing information at at least one of the sides 9, 10 of said first print medium 6, after having <B> <B> > imposed on the latter 6, a surface tension greater than that <B> <B> of said second print medium 7. </ B> In a third step of the printing and manufacturing process according to the invention , on top of the first printing medium 6, said second printing medium 7 is defined by a translucent material, preferably transparent.

In a fourth step of this process, it is proceeded to the polymerization, by translucency or transparency through the second printing medium 7, the layer 18 of varnish 19 by ultraviolet radiation.

In a fifth step, printing of said second print medium 7 for the definition at the latter 7, information of which a portion 5B is visible on the front 16 and another part 5A is searchable, by transparency, on the backside 17 of said second printing medium 7, after detachment of the latter from the first printing medium 6.

In this connection, it should be pointed out that when printing said second translucent or transparent printing medium 7, the printing of the part 5A, which can be consulted on the reverse side 17, is printed first. transparency, before printing the part 5B visible on the front 16. It will be observed that, between these two impressions may, possibly, be provided the impression of a bottom consisting of a third layer 23 for making opaque said second support of printing 7.

 In order to implement such a printing and manufacturing process, an installation illustrated schematically in FIG. 3 is used.

This installation 26 comprises supply means 27, in particular constituted by a reel 28 on which is wound a band 8 defining said first printing medium 6.

These means 27 are intended to feed means 29 capable of producing the printing of information 5. Such printing means 29 comprise, on the one hand, means 30 capable of ensuring the presence of a layer 20 ultraviolet radiation polymerizable ink and, secondly, means 31 capable of providing such polymerization. It will be noted that between the supply means 27 and the printing means 29 may be interposed means 32 for imposing a surface tension at said first printing medium 6 which is greater than that of the second medium. printing 7.

Downstream of said printing means 29, said installation 26 comprises means 33 intended to ensure the application, on said first printing medium 6, of a layer 18 of an ultraviolet radiation polymerizable varnish 19.

Said installation 26 also includes means 34 capable of supplying a second printing medium 7, this last being disposed over the first <B> > print media <B> 6, by means of </ B> rolling <35>. Downstream of these </ B> last, said installation 26 comprises drying means 36 capable of ensuring, through ultraviolet radiation, the <B> polymerization </ B> of said <B> varnish 19. </ B >

After polymerization, it is ensured the printing of said second printing medium 7 to define, on the one hand, a portion 5A information searchable, on the reverse side 17 of said second print medium 7 and this by the intermediate <B> primary printing means 37 whose characteristics are <B> similar to those of printing means 29 described above. </ B>

Said installation 26 also includes secondary printing means 38 capable of producing part 5B of the information visible on the front side 16 of said second printing medium 7.

It should further be noted that these printing means 37, 38, may further be supplemented by tertiary printing means 39 capable of ensuring the presence of a third layer. 23 for rendering said second printing medium 7 opaque.

Finally, said installation 26 comprises a winding drum 40 on which are wound after securing, <B> said first and second print media 6, </ B> 7 defining at least one </ B > double label <B> 1. </ B> Through the process of printing and manufacturing described above and the installation able to implement this process, it is possible to obtain, in a fast way, effective, simple and advantageous, double labels having a detachable label on the front and back of which are visible information. The presence of the latter is advantageously provided by making an impression of said detachable label only at the front.

In addition, by imposing a greater surface tension on said first printing medium and by using a polymerizable varnish, it avoids the use of adhesion means that have the disadvantage of making adhesive the first and / or second print media. The latter advantageously defines a flying tag which can no longer be fixed again by adhesion to a support.

Although the invention has been described with respect to a particular embodiment, it is understood that it is in no way limited and that various modifications of shapes, materials and combinations thereof can be made. various elements without departing from the scope and spirit of the invention.

Claims (2)

<U> Claims </ U> A method of printing and manufacturing a double label (1) consisting of a first printing medium (6), optionally of the self-adhesive type (3), and a second detachable printing medium (B) (7), characterized by the fact that </ B> - <B> imposes a different surface tension on the first (6) </ B> and the second (7) printing medium so that said voltage the surface area of the first print medium (6) is greater than <B> that of the second print medium (7) </ B>; - between the two printing media (6, 7) is applied a layer (18) of a varnish (19) polymerizable by ultraviolet radiation; - on top of the first printing medium (6), the second print medium (7) defined by a translucent, preferentially transparent material </ B> is arranged; - <B> is carried out the polymerization, by transparency through </ B> of the second printing medium (7), the layer (18) of varnish (19) <B> by ultraviolet radiation </ B > - printing of said second print medium (7) for the definition, at the latter (7), information (5A, 5B) of which a portion (5B) is visible on the front (16). ) and of which another part (5A) can be viewed transparently on the back (17) of said second printing medium (7) after detaching the latter (7) from the first printing medium <B> M. </ B> 2. A method of printing and manufacturing a double <B> label (1) according to claim 1, characterized in that </ B> the <B> difference between the surface tensions of the two supports </ B > <B> of printing (6, 7) is imposed through the choice of materials </ B> thereof (6, 7). <B> 3. A method of printing and manufacturing a double <B> label (1) according to any <B> of any of claims 1 or 2, characterized in that the difference between the surface tensions is imposed, either by ensuring the presence of electrical charges at at least one of said printing media (6, 7), or by covering at least one of these (6, 7) by a layer of a material suitable, as the case may be, for increasing or decreasing the surface tension. 4. Printing method and manufacturing a double label (1) according to claim 3, characterized in that it imposes a higher surface tension to the first print medium (6) ensuring, at the level of the latter (6), the presence of electric charges by Corona effect. A method of printing and manufacturing a double label (1) according to any one of the preceding claims, characterized in that the difference between the surface tensions of the two print media (6, 7) is greater than 1 mN / m, preferably equal to 4 mN / m. 6. A method of printing and manufacturing a double label (1) according to any one of the preceding claims, characterized in that one proceeds to the printing (5) of at least one of the sides (9, 10) of the first printing medium (6), after having imposed on the latter (6) a surface tension greater than that of the second printing medium (7) and before applying the varnish ( 19) polymerizable. 7. A method of printing and manufacturing a double label (1) according to any one of the preceding claims, characterized in that it applies the layer (18) of varnish (19) polymerizable on the first support printing (6). 8. A method of printing and manufacturing a double label (1) according to any one of the preceding claims, characterized in that, during the application of the varnish (19), is defined, at the level of of the first (6) and / or second (7) printing medium, a portion (25) free, at least in part, of varnish (19) to facilitate the gripping and detachment of said second printing medium (7). 9. A method of printing and manufacturing a double label (1) according to any one of the preceding claims, characterized in that, when printing said second printing medium (7) translucent or transparent, first of all, the printing, by transparency, of the part (5A) of the information available on the back (17), before printing the part (5B) of the information visible on the front (16), between these two prints being optionally provided the impression of a background for rendering opaque said second printing medium (7). <B> 10. Double <B> label <B> (1) obtained by the process according to any one of the preceding claims and constituted by a first printing medium (6), possibly of the self-adhesive type (3), and a second detachable printing medium (7), characterized in that - the first printing medium (6) has a surface tension greater than that of the second printing medium (7); - This second printing medium (7) is disposed over said first printing medium (6), between these two printing media (6, 7) being interposed a layer (1B) of varnish (19) of the type ultraviolet radiation polymerizable; said second printing medium (7), on the one hand, is defined by a translucent material, preferentially transparent, and, on the other hand, has a face (14) on which is reported, by printing, at least one layer (21, 22, 23) defining <B> information (5A, 5B) that can be accessed, in part (5B), from the front (16) of said second medium (7) and, part (5A), from the back (17) of the latter (7) and by transparency. he. Double label (1) according to claim 10, characterized in that the first printing medium (6) has two sides (9, 10), at least one of which receives, by printing, at least one layer (20) defining information (5), said layer (20) being covered by a varnish (19) at least on the side on which is disposed said second printing medium (7). 12. Double label (1) according to any one of claims 10 or 11, characterized in that said second printing medium (7) has a detachment tab (24) and that between the latter (24) and said first printing medium (6), the latter (6) has a portion (25) free, at least in part, of varnish (19).