FR3060542A1 - NEW DOUBLE-PIECE TAPERED SEAL WITH MARKING FOR CLOSURE OF A CLOSURE CONTAINER BY CAP OR CAPSULE - Google Patents

Abstract

Heat-sealable seal comprising a support and a cover, one or the other of which has a sheet of conductive material, the support being secured to the cover by means of a temporary adhesive, said cover being provided with a tongue whose the entire surface is folded once on the face of the cover in contact with the corresponding face of the support, the cover comprising at least one reinforcing film and a heat-sealing film, the latter not covering the underside of the tongue , the temporary adhesive being applied over the entire surface of the lid once the folded tongue, characterized in that the support and / or the cap each have on at least one of their face a code for automated reading by an electronic sensor.

Description

© Publication no .: 3,060,542 (to be used only for reproduction orders)

©) National registration number: 16 62935 ® FRENCH REPUBLIC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY

COURBEVOIE © Int Cl ⁸ : B 65 D 53/00 (2017.01), B 65 D 51/18

A1 PATENT APPLICATION

©) Date of filing: 20.12.16. © Applicant (s): MANUFACTURE GENERALE DE (© Priority: JOINTS Simplified joint stock company - FR. @ Inventor (s): TRIQUET STEPHANE. ©) Date of public availability of the request: 22.06.18 Bulletin 18/25. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): MANUFACTURE GENERALE DE related: JOINTS Simplified joint-stock company. ©) Extension request (s): © Agent (s): LAURENT AND CHARRAS CABINET.

NEW DOUBLE PIECE JOINT WITH TONGUE PROVIDED WITH A MARKING FOR SEALING A CONTAINER CLOSED BY CAP OR CAPSULE.

FR 3 060 542 - A1 (£ /> Heat-sealable joint comprising a support and a cover, either of which has a sheet of conductive material, the support being made integral with the cover by means of a temporary adhesive, said cover being provided with a tab, the entire surface of which is folded once on the face of the cover in contact with the corresponding face of the support, the cover comprising at least one reinforcing film and a heat-sealing film, the latter not covering the underside of the tongue, the temporary adhesive being applied to the entire surface of the cover once the tongue is folded, characterized in that the support and / or the cover each have, on at least one on their face a code intended for an automated reading by an electronic sensor.

i

NEW DOUBLE PIECE TONGUE JOINT WITH MARKING

FOR SEALING A CONTAINER WITH A PLUG CLOSURE OR

CAPSULE

The invention relates to a new double-piece tab seal provided with a marking, in particular with a barcode or QR, intended to allow the closure of a container with closure by cap or capsule.

The sealing of containers with closure by cap or capsule, prior to their first opening, is carried out by means of a seal which can be adhesive or sealable, in particular thermally on the rim.

The invention relates more particularly to a heat sealable joint.

Such a seal consists of a cover placed around the entire periphery of the upper rim of the neck of the container or drinking, thereby isolating the container from the outside, and on the other hand, of a generally thicker support. , inserted, without being fixed, at the bottom of the cap. Prior to the first opening of the container, the support and the seal can be secured by means of a temporary adhesive.

The role of the seal is first of all to confer an inviolability of the container before the first opening. In addition, it provides primary sealing vis-à-vis the outside. In addition, it must develop certain properties of compatibility with the content it is supposed to isolate and for example be of food quality as soon as the content is itself food.

The support, for its part, is intended to absorb the tolerances between the bottom of the capsule and / or the stopper and the upper part of the neck of the container, and in addition, to ensure secondary sealing as soon as the seal has been wholly or partly withdrawn. It is therefore likely to provide a certain compression with memory effect to precisely allow these tolerances to be absorbed.

In practice, the seal is inserted at the bottom of the capsule or the stopper. Once the container is filled, the cap or the cap with the seal is screwed or clipped onto the container. The seal portion of the seal is then in contact with the drinker. The sealing of the lid on the rim is then carried out by induction heat sealing. This heat sealing is made possible by the combined action of a conductive material, inserted into the thickness of the joint, which, under the effect of an electric induction heats up, causing the softening of the sealing film on the drink. When the container is opened for the first time, the support inserted at the bottom of the stopper dissociates from the seal which remains sealed on the rim. It is only afterwards that the cover is removed by the consumer, the sealing, in the closed position of the container, being then no longer ensured except by the support part of the seal pressing against the rim by compression.

To allow effective and easy removal of the cover by the consumer, it has been proposed to add to said cover an easily graspable tongue, such as for example described in documents EP 2 045 194 A1 and WO2013 / 017754 of the Applicant.

Many solutions have been proposed to verify that the product purchased by the consumer was an original product and / or had never been opened.

By way of example, in the field of wine capsules, the document US2003 / 0127846 describes an anti-counterfeiting device in the form of a crimping tab, the internal face of which is covered by an image appearing only in contact with oxygen. . As the tab is removed, the image, including the brand of the drink, is revealed on contact with oxygen.

Document US2014 / 0224800 describes a double-piece seal of the lift n peel® type, one of the layers of the cover of which is covered with a hologram. The hologram appears when the cap is removed, which guarantees the origin of the product. Furthermore, the application of the hologram over the entire surface of the diaper, including the integral part of the rim, means that the cover cannot be returned to its position once separated. The joint described therefore makes it possible to guarantee the inviolability of the product.

For manufacturers, in particular of cosmetic and food products, it is essential to guarantee the consumer the origin of the products and their inviolability. From the manufacturer's point of view, it is also essential that the seal supplied to it comes from the original selected seal manufacturer. Indeed, since most of the time, the manufacturer of the finished product is not delivered directly by the seal manufacturer but by a capsule manufacturer intermediary, there is a risk that the seal ultimately inserted in the capsule will not be the original one. However, when we know the specificity of the seals in terms in particular of oxygen barrier, aroma, odor depending on the nature of the product to be protected, we can easily imagine the consequences of inserting a seal that would not respond to the specifics required.

The obvious solution is to mark the seal with the seal manufacturer's image. The constraint for the consumer product manufacturer is that they do not want this marking to be visible to the end consumer. Indeed, there is no interest in this being the case, apart from the aesthetic aspect which could be affected.

In addition, the consumer is more and more solicited by advertisers, in particular through advertising which he has the possibility of visualizing when he consults a website of his choice. For example, the fact of consulting a cooking recipes website sends you back to the screen margin, whatever site you later consult, information on products related to the recipes consulted or restaurants likely to offer you the dish corresponding to said recipe. In other words, it becomes essential for brands to be able to identify the habits of their customers in order to submit targeted advertisements to them.

Similarly, in the case of the pharmaceutical industry, it may be interesting to give the consumer the possibility of viewing the instructions for use without requiring a paper version.

In other words, the problem which the invention proposes to solve is to develop a seal which includes a means of guaranteeing the origin of the product and which can give the possibility of tracing a certain amount of information whatsoever. for the brand or for the consumer and that this means is compatible with the technology for manufacturing double-piece heat-sealable seals.

To resolve this problem, the Applicant had the idea of inserting into the joint, a code intended for automated reading by an electronic sensor.

In the following description and in the claims, the expression “code intended for automated reading by an electronic sensor” denotes a representation of a digital or alphanumeric datum in the form of a symbol whose thickness varies according to the symbology used and the data thus coded. This can include a barcode or a QR code.

The information contained in the code can be of different natures. It can be as already said of the identification of the seal manufacturer. It can be a code related to the brand of the product. This code can be associated with cooking recipes. He can also inform the brand about the type of product purchased by the consumer and thus trace his consumption habits in order to then submit targeted advertisements to him. Any type of information can be considered. We can also imagine a code that would allow the customer to win prizes.

In other words, the subject of the invention is a seal comprising a support and a cover, one or the other of which has a sheet of conductive material, the support being made integral with the cover by means of an adhesive. temporary, said cover being provided with a tongue the entire surface of which is folded once on the face of the cover in contact with the corresponding face of the support, the cover comprising at least one reinforcing film and a heat-sealing film , the latter not covering the underside of the tongue, the temporary adhesive being applied to the entire surface of the cover once the tongue is folded.

The seal is characterized in that the support and / or the seal each have, on at least one of their faces, a code intended for automated reading by an electronic sensor.

Advantageously, the code is protected by a thermoplastic film.

The support can be made of any type of compressible material with recovery memory, in particular in expanded polyethylene or in expanded polypropylene, optionally provided on at least one of its two faces, with a film of polypropylene or polyethylene to give it a certain rigidity. . It can also be made of paper or cardboard. In practice, the supports envisaged have a thickness of between 0.5 and 4 mm, advantageously between 0.8 and 2 mm.

According to a first embodiment, the code is applied to the lower face of the support. In other words, the code will be readable after separation of the seal from the support on the underside of the support.

In a first embodiment, the support contains a sheet of conductive material.

According to a first alternative, the support successively comprises in the direction of the heat-sealing film:

- an upper reinforcement film,

- a layer of compressible material, a lower reinforcing film,

- a sheet of conductive material, the code being printed on the underside of the sheet of conductive material.

Under these conditions, the temporary assembly is an extruded or co-extruded film, as will be seen below.

According to a second alternative, the support successively comprises in the direction of the heat-sealing film:

- an upper reinforcement film,

- a layer of compressible material, a lower reinforcing film,

- a sheet of conductive material,

- a sheet of paper, the code being printed on the underside of the sheet of paper.

Under these conditions, the temporary assembly is a wax.

In a second embodiment, the support does not contain a sheet of conductive material.

Advantageously under these conditions, the support successively comprises in the direction of the heat-sealing film:

- an upper reinforcement film,

- a layer of compressible material,

- At least one lower reinforcement film, the code being printed on one of the two faces of the lower reinforcement film.

According to a first alternative, the lower reinforcement film is opaque and the code is printed on its lower face.

According to a second alternative and advantageously, the lower reinforcing film is made up of two translucent reinforcing films and the code is printed on the upper face of the lower-most reinforcing film.

According to a second embodiment, the code is printed on at least one of the two faces of the cover.

To allow reading of the desired side of the cover, the Applicant had the idea of making the cover opaque.

In a first embodiment, the cover contains a sheet of conductive material and the opacity is imparted by said sheet. Under these conditions, the cover comprises a reinforcing film on one of the faces of which the code is printed, the reinforcing film being applied to one side or the other of the sheet of conductive material.

Under these conditions, the cover successively comprises, in the direction of the heat-sealing film:

- an upper reinforcement film,

- a sheet of conductive material, a lower reinforcement film, a heat-sealing film, the code being printed on the lower face of the upper reinforcement film or the upper face of the lower reinforcement film.

These embodiments make it possible to protect the code by sandwiching it between two successive layers.

In this way, the user is sure to read the code the right way, that is to say on the side of the seal from which it is visible.

Although this embodiment is entirely satisfactory in terms of reading the code, the presence of a conductive material in the cover can alter the heat sealing depending on the shape of the tongue in particular.

To solve this problem, and in a second embodiment, the support contains the sheet of conductive material and the opacity is imparted by the reinforcing film.

Advantageously, the reinforcing film on which the code is printed is opaque.

In this embodiment, the support contains the sheet of conductive material and the cover successively comprises, in the direction of the heat-sealing film:

- a translucent upper reinforcement film,

- an opaque lower reinforcement film, a heat-sealing film, the code being printed on the lower face of the upper reinforcement film or on the upper face of the lower reinforcement film.

In this way, the code is protected.

When it is desired that the consumer in particular, be able to read the code after removing the cover, that is to say directly on the lower face of the cover, one can envisage at least one alternative, without this being limiting . The arrangement of the code on the underside of the cover also makes it possible to move said code away from the heat source at the time of induction and therefore not to alter its quality.

According to this embodiment, the support contains the sheet of conductive material and the cover successively comprises, in the direction of the heat-sealing film:

- an opaque upper reinforcement film,

- a translucent lower reinforcement film, a heat-sealing film, the code being printed on the lower face of the upper reinforcement film or on the upper face of the lower reinforcement film.

Again, this embodiment protects the code to the extent that it is sandwiched between two layers.

The embodiment according to which the code is read under the cover, that is to say after its removal is particularly advantageous when it is desired to use the visible part of the cover before removal, to affix the mark of the product in particular . Under these conditions, a mark, different from the code, is printed on the upper reinforcement film.

In a first embodiment, the support contains the sheet of conductive material and the cover successively comprises, in the direction of the heat-sealing film:

- an upper reinforcement film on the lower face of which is applied an impression different from that of the code,

- an opaque intermediate reinforcing film,

- a translucent lower reinforcement film on the upper face of which the code is printed, a heat-sealing film.

In a second embodiment, the support contains the sheet of conductive material and the cover successively comprises, in the direction of the heat-sealing film:

- an upper reinforcing film on the lower face of which are applied successively in the direction of the heat-sealing film:

- a different impression from that of the code,

- printing the code,

- a translucent lower reinforcement film,

- a heat-sealing film.

In known manner, the reinforcement films can be combined directly with one another or by means of a binder layer.

Of course, the upper and lower reinforcing films can themselves consist of several films.

In general, the material from which the reinforcing film is made is chosen so that the resistance of said material is greater than that of the peel-off force.

In practice, the reinforcing films are, for example, bi-oriented polyester films, with a thickness of between 6 and 40 μm. These include films made of PET (poly (ethylene terephthalate)), which are generally temperature resistant.

Generally, the sheet of conductive material is in the form of an aluminum sheet or equivalent. As already mentioned, it is advantageously positioned in the support.

According to another characteristic, the heat-sealing film is made of a material of the polyolefin type, chosen from the group comprising polyethylene, polypropylene or PET, of the hot-melt type or also of the terpolymer or ionomer type. Generally, the material constituting the heat-sealing film is chosen according to the nature of the pot. The heat-sealing film can be a monolayer film applied to the underside of the complex by extrusion. It can also be a two-layer film (a lower heat-sealing layer proper and an upper binder layer) applied to the underside of the complex by co-extrusion.

Depending on their nature and the manufacturing process used, the constituent layers of the cover may be combined by means of a binder, such as for example a two-component isocyanate-hydroxyl adhesive.

The cover has in practice a thickness of between 20 and 200 μm, preferably between 30 and 120 μm.

With regard to the temporary joining between the support and the cover, this can be obtained by means of a temporary adhesive applied in the form of a film, preferably extruded or co-extruded, each of the two faces of the layer having a different tackiness, the most sticky face being applied to the lower surface of the support, while the less sticky face is applied to the upper face of the cover. In practice, such a film is based on a polymer, generally synthetic, and chosen judiciously by a person skilled in the art, so as to obtain the desired properties of differential bonding. Such polymers are for example polymers or co-polymers based on acetate, acrylate, polyethylene ... The temporary adhesive can also be in the form of a layer of wax.

The invention and the advantages which ensue therefrom will emerge more clearly from the example which follows and which constitutes a preferred embodiment.

A seal according to the invention is a heat sealable double piece. The seal consists of a support and a cover provided with a tab.

The support comprises a layer made of polypropylene or expanded polyethylene and has a thickness of between 1.4 and 1.7 mm. The expanded layer is covered on its underside with a layer of conductive material.

The cover is devoid of a layer of conductive material. It presents from its upper face opposite the support, towards its lower face opposite the rim of the pot:

a first translucent reinforcing film which has an extension constituting the tongue proper, and the underside of which contains an impression of the brand of the product,

- a second opaque reinforcement film,

- a third translucent film, the upper side of which is printed with a QR code,

- a heat-sealable plastic film, such as for example polyethylene.

The tongue, before separation, is folded back on itself and over its entire length, between the upper face of the cover and the lower face of the support.

According to the invention, the support and the cover are associated by means of a temporary extruded adhesive film of the polyethylene type, each of the two faces of the film having a different tackiness, the most sticky face being applied to the lower surface ίο of the support, while the less sticky face is applied to the upper face of the cover.

The two reinforcement films are made of PET.

The temporary adhesive is in the form of an extruded film of the polyethylene type,

In practice, these seals are positioned as they are at the bottom of the stopper, the stopper then being screwed or clipped, as the case may be, to the neck of the container. The heat sealing of the joint is carried out by induction.

The invention and the advantages which flow from it are apparent from the above description. We note in particular the advantage of making a tongue joint comprising a bar code or QR whose graphics and therefore subsequent reading is not affected by heat sealing.

he

Claims (10)

1 / heat-sealable seal comprising a support and a cover, one or the other of which has a sheet of conductive material, the support being made integral with the cover by means of a temporary adhesive, said cover being provided with a tongue. the entire surface of which is folded once on the face of the cover in contact with the corresponding face of the support, the cover comprising at least one reinforcing film and one heat-sealing film, the latter not covering the underside of the tongue, the temporary adhesive being applied to the entire surface of the cover once the tongue is folded, characterized in that the support and / or the cover each have, on at least one of their faces, a code intended for a automated reading by an electronic sensor. 2 / joint according to claim 1, characterized in that the support successively comprises in the direction of the heat-sealing film: - An upper reinforcement film, a layer of compressible material, a lower reinforcement film, a sheet of conductive material, the code being printed on the underside of the sheet of conductive material. 3 / joint according to claim 1, characterized in that the cover contains the sheet of conductive material and the support successively comprises in the direction of the heat-sealing film: an upper reinforcement film, a layer of compressible material, at least one lower reinforcement film, the code being printed on one of the two faces of the lower reinforcement film. 4 / joint according to claim 3, characterized in that the lower reinforcing film consists of two translucent reinforcing films and the code is printed on the upper face of the lower reinforcing film. 5 / joint according to claim 1, characterized in that the cover successively comprises, in the direction of the heat-sealing film: - an upper reinforcement film, a sheet of conductive material, a lower reinforcement film, a heat-sealing film, the code being printed on the lower face of the upper reinforcement film or the upper face of the lower reinforcement film. 6 / joint according to claim 1, characterized in that the support contains the sheet of conductive material and the cover successively comprises, in the direction of the heat-sealing film: - a translucent upper reinforcement film, - an opaque lower reinforcement film, a heat-sealing film, the code being printed on the lower face of the upper reinforcement film or on the upper face of the lower reinforcement film. 7 / joint according to claim 1, characterized in that the support contains the sheet of conductive material and the cover successively comprises, in the direction of the heat-sealing film: - an opaque upper reinforcement film, - a translucent lower reinforcement film, a heat-sealing film, the code being printed on the lower face of the upper reinforcement film or on the upper face of the lower reinforcement film. 8 / joint according to claim 1, characterized in that the support contains the sheet of conductive material and the cover successively comprises, in the direction of the heat-sealing film: - an upper reinforcement film on the lower face of which is applied an impression different from that of the code, - an opaque intermediate reinforcing film, - a translucent lower reinforcement film on the upper face of which the code is printed, a heat-sealing film. 9 / joint according to one of the preceding claims, characterized in that the temporary adhesive is applied in the form of an extruded or co-extruded film, each of the two faces of the layer having a different tack, the most sticky side being applied to the lower surface of the support, while the less sticky face is applied to the upper face of the cover. 10 / Seal according to one of the preceding claims, characterized in that the code is a bar code or a QR code.