FR2925030A1 - RECYCLABLE PLASTIC CONTAINER AND CORRESPONDING CLOSURE DEVICE - Google Patents

Abstract

Container (1) of recyclable plastic material substantially impermeable to oxygen input from outside, said container (1) being intended to contain a liquid food substance whose properties are likely to be altered in the presence of oxygen , said container (1) comprising an opening (8) closable by means of a plastic closure device which is disposed at the opening (8) of said container (1) to close it in a substantially watertight manner, characterized in that the closing device is made of a recyclable plastic material which is compatible in terms of recycling with the recyclable plastic material of the container (1), so as to enable the container (1) and the device to be recycled together. closing without necessarily having to separate them first.Domaine of food packaging.

Description

RECYCLABLE PLASTIC CONTAINER AND CORRESPONDING CLOSURE DEVICE

The present invention relates to the general technical field of packaging foodstuffs intended for human consumption, in particular the packaging of liquid food substances.

The present invention relates in particular to the general technical field of plastic containers for packaging liquid food substances whose properties are likely to be altered in the presence of oxygen.

The present invention relates to a recyclable plastic container substantially impermeable to oxygen input from outside, said container being intended to contain a liquid food substance whose properties are likely to be altered in the presence of oxygen, said container comprising an opening which can be closed by means of a plastic closure device which is disposed at the opening of said container to close substantially sealingly.

The present invention also relates to a recyclable plastic assembly and its manufacturing process.

The present invention finally relates to a plastic capsule.

It is well known to condition the wine in sealed glass bottles vis-à-vis the oxygen of the outside air and closed with a cork or an aluminum cap. The B70454 / FR glass bottles allow the wine to be kept for a long time and maintains its main properties, especially by avoiding the entry of oxygen into the bottle. Indeed, wine, which includes a large number of volatile or nonvolatile chemical compounds, is particularly sensitive to the presence of oxygen which causes its oxidation and thus the alteration of its organoleptic qualities.

The watertightness of the glass bottle vis-à-vis the outer oxygen due to the intrinsic properties of the glass is further enhanced by the use of corks covered with an aluminum cap to close the glass bottles. Such devices therefore constitute an additional barrier vis-à-vis the external oxygen.

The set formed by the glass bottle, the cork and the aluminum capsule can be reprocessed by waste sorting and recycling. Indeed, the selective sorting system allows consumers to voluntarily sort their household waste so that they can be selectively recycled or destroyed, at lower costs. Thus, glass bottles, once used, can be thrown in specific containers installed in cities and towns or thrown in containers already provided for this purpose in collective housing.

Generally, selective sorting is a voluntary act of the consumer and the latter must take care not to mix certain non-compatible materials with each other in terms of recycling, such as for example glass and aluminum. Glass, which can be sorted and recycled, can be considered environmentally friendly packaging in its general sense. B70454 / FR However, although it is environmentally friendly in terms of recycling and although it also helps to preserve the wine and prevent its oxidation, the glass bottle does not disadvantages.

In fact, glass is a heavy material and the packaging of wine in glass bottles entails significant transport costs related in particular to energy costs. During a general increase in the price of energy, this type of packaging can become particularly expensive especially in the case of transportation by air or road.

At this energy cost is associated an environmental cost, the energy expenditure for the transport of the glass wine bottles contributing particularly to the pollution of the environment taken in its general definition.

Regarding the environmental aspect, glass being a recyclable material, one might think that a use of this type of packaging is an undeniable advantage. However, when an aluminum capsule is associated with it, which is very often the case, it is difficult to recycle it directly. Indeed, the glass wine bottles covered with an aluminum capsule must, prior to recycling, be the subject of a special sorting to separate the capsule from the glass bottle. This is also the case if the bottle still contains its cork. Thus, despite the selective sorting of the glass bottle operated by the user, the bottle must again be sorted if it still has its capsule or cap, which is the most common case. This sorting involves high recycling costs and is sometimes not possible, effectively limiting the efficiency and quality of recycling.

On the other hand, glass bottles can be a source of danger because they are particularly likely to be broken easily by

B70454 / EN chips and thus become sharp objects dangerous for humans, and especially for children. This safety aspect leads to the limitation of the use or even the prohibition of glass bottles in many public places, especially during sporting events, in airplanes, at public events, etc.

Finally, glass bottles are not always available in sufficient quantities on the market. This can sometimes lead to periods of shortages in glass bottles for bottlers and the inevitable increase in the price of bottlers.

To overcome these problems of weight, transport and safety costs, it is also known to package the wine in plastic bottles, especially polyethylene terephthalate (PET), generally closed with a capsule. aluminum. These bottles have the advantage of being particularly light compared to glass bottles mentioned above. The energy cost associated with their transport is consequently much lower than that of glass bottles.

PET bottles are also unbreakable and thus prevent the risk of injury occurring regularly when handling broken glass bottles or broken glass.

However, these plastic bottles also have a number of significant disadvantages.

The plastic material used for the manufacture of the bottle is most often porous oxygen, which obviously limits the duration of conditioning of the wine contained in the bottle and can significantly alter its taste. B70454 / FR Moreover, some plastic bottles containing wine are not rigid enough and can be easily deformed when used or handled. In addition, existing plastic bottles are not always transparent; they are therefore visually much less attractive to the consumer.

Finally, the plastic bottles are generally closed with an aluminum cap, a portion of which, in the form of a collar, remains on the neck of the bottle after use. Therefore, it becomes difficult or impossible to directly recycle the plastic bottle because it is necessary not only before separating the aluminum capsule from the bottle but still extract and separate the collar. This operation obviously increases the difficulty and costs of recycling.

The objects assigned to the invention therefore aim to remedy the various drawbacks listed above and to propose a new recyclable plastic container that is environmentally friendly and easily recyclable.

Another object of the invention is to provide a new recyclable plastic container readily available on the market.

Another object of the invention is to provide a new container of recyclable plastic material which allows a good seal of the container vis-à-vis the oxygen inlet from the outside of the container.

Another object of the invention is to provide a new recyclable plastic container which comprises a closure device having a good relationship between quality, price and performance. B70454 / FR Another object of the invention is to provide a new recyclable plastic container which comprises a closure device whose manufacture is facilitated and which is particularly solid.

Another object of the invention is to provide a new recyclable plastic container whose closure device provides a guarantee for the user when opening the container.

Another object of the invention is to provide a new recyclable plastic container whose closure device can be easily set up and manipulated.

Another object of the invention is to provide a new recyclable plastic container for securing the closure device on the container.

Another object of the invention is to provide a new recyclable plastic container whose closure device allows a simple way to limit the oxygen input into the container.

Another object of the invention is to provide a new assembly of recyclable plastic material that is environmentally friendly and is easy to recycle.

Another object of the invention is to propose a new method of manufacturing a set of recyclable plastic material easy to implement.

Another object of the invention is to provide a novel method of manufacturing a set of recyclable plastic material comprising a step B70454 / FR to improve the sealing of the container vis-à-vis the outer oxygen.

Another object of the invention is to propose a new capsule whose recycling with the container it closes is facilitated.

Another object of the invention is to propose a novel capsule which limits the entry of external oxygen into the container which it closes.

The objects assigned to the invention are achieved by means of a recyclable plastic container substantially impermeable to the oxygen inlet coming from the outside, said container being intended to contain a liquid food substance whose properties are capable of being altered in the presence of oxygen, said container comprising an opening "capable of being closed by means of a plastic closure device which is arranged at the opening of said container to close it in a substantially watertight manner, characterized in that the closing device is made of a recyclable plastic material which is compatible in terms of recycling with the recyclable plastic material of the container, so as to enable the container and the closure device to be recycled together without necessarily having to to separate them beforehand.

The objects assigned to the invention are furthermore attained by means of a recyclable plastics assembly comprising: a PET bottle substantially impermeable to the oxygen inlet coming from the outside of the bottle, containing wine, and a recyclable polyethylene capsule compatible with PET in terms of recycling, preferably in PERD, for substantially sealingly closing said PET bottle, said capsule comprising an outer oxygen barrier seal . The objects assigned to the invention are also achieved by means of a process for manufacturing the assembly made of recyclable plastic material in which: the manufacture of a PET bottle comprising an opening and of a recyclable polyethylene capsule, the filling of the PET bottle with wine, the positioning of the capsule at the level of the opening of the PET bottle in order to allow the substantially impervious tamperproof closure of said bottle.

The objects assigned to the invention are finally achieved using a recyclable plastic capsule compatible in terms of recycling with a PET plastic material, said capsule being intended to ensure the substantially sealed closure of a container intended to contain wine, preferably a PET bottle.

Other objects and advantages of the invention will appear better on reading the description which follows, as well as with the aid of the accompanying drawings, given purely by way of illustration and without limitation, in which:

- Figure 1 illustrates, in a schematic view, a preferred embodiment of the invention wherein the recyclable plastic container is a bottle.

- Figure 2 illustrates, in a front view, a preferred embodiment of the closure device of the invention wherein the closure device is a recyclable plastic capsule.

FIG. 3 illustrates, in a view from above, the capsule of FIG. 2. B70454 / FR - FIG. 4 illustrates, in a sectional view along the axis 1-1 of FIG. 2, the capsule of FIG. 2.

FIG. 5 illustrates, in a sectional view from above II-II of FIG. 4, a portion of the capsule of FIG. 4. FIG. 6 illustrates, in a sectional view along the axis III-111 of Figure 4, the capsule of Figure 2.

FIG. 7 illustrates a detail A of the capsule of FIG. 6.

FIG. 8 illustrates a detail B of the capsule of FIG. 6.

The container 1 of the invention is recyclable plastic material substantially impermeable to the oxygen inlet coming from the outside. Within the meaning of the invention, a container is an object, preferably a utensil, for containing, storing and / or transporting any substance that is preferably in a liquid form. Preferably, the container of the invention is a bottle 1A recyclable plastic material.

The bottle 1A of the invention is intended to contain a liquid food substance whose properties are likely to be altered in the presence of oxygen. The liquid food substance of the invention is preferably a liquid containing ethanol, preferably wine.

The following description and the figures which illustrate it relate preferably to a bottle 1A recyclable plastic material for containing wine. Any other container as well as any other liquid food substance, in particular any other edible liquid whose organoleptic, physical and / or chemical properties may be modified in the presence of oxygen, may of course be envisaged without, however, providing kind of the scope of the present invention.

In the case of wine, the presence of oxygen leads to an oxidation of the wine which results in an alteration of its taste qualities making it particularly unpleasant to taste or even unhealthy for the consumer.

The bottle 1A of the invention advantageously extends longitudinally along an axis of extension XX 'between a lower end 2 and an upper end 3. The bottle 1A comprises a bottom 4, preferably circular in shape and a diameter L3 may vary depending on the model and the contemplated capacity, said bottom 4 being surmounted by a cylinder forming a body 5 of the bottle 1A of a diameter advantageously identical to the diameter of the bottom 4. The body 5 is surmounted by a cylinder forming a neck 6 of diameter L2 also capable of varying and substantially less than that of the body 5. The neck 6 is in turn surmounted by a last cylinder forming a neck 7 of a diameter L4 substantially identical to or slightly greater than that of the neck 6. The neck 7 of said bottle 1A comprises, at the upper end 3, an opening 8 through which one proceeds to filling said bottle 1A and capping.

Preferably, the bottle 1A is a consumer bottle of a conventional form commonly found in the wine trade, and more generally in the beverage trade. The bottle 1A can advantageously take the form of a bottle for receiving wine from a French wine region, European or other wine region of the world. In addition, the bottle 1A is intended to contain a quantity of wine preferably between 9.4cl and 30 l, preferably between 15 cl B70454 / FR and 1.5 I, particularly advantageously substantially equal to 18.7 cl .

The bottle 1A has a height LI preferably between 5 and 100 cm, preferably between 10 and 50 cm, particularly advantageously substantially equal to 17.925 cm. The neck 6 of the bottle 1A has a diameter L2 preferably between 5 and 30 mm, advantageously substantially equal to 18.9 mm. The neck 7 of the bottle 1A has a diameter L4 preferably between 5 and 30 mm, advantageously substantially equal to 22.4 mm. The difference in diameter between the neck 7 and neck 6 is preferably materialized by a shoulder 9A.

Preferably, the bottom 4 of the bottle 1A may be slightly curved towards the inside of the bottle along the axis XX ', this characteristic depending substantially on the type of bottle. The bottom 4 has a diameter substantially between 2 and 15 cm, preferably between 3 and 8 cm and particularly preferably substantially equal to 4.6 cm. Advantageously, the bottle 1A can be stored indifferently horizontally or vertically.

Furthermore, the bottle 1A of the invention is made of a plastic material that can be recycled, that is to say that once the bottle 1A can be treated, on a large scale. , allowing the reuse of its constituent material. The bottle 1A is firstly collected through selective sorting which corresponds to a voluntary approach of the consumer, the latter discarding the bottle 1A after use in a container provided for this purpose. The set of recyclable plastic bottles thus collected are then transported to a sorting center in which they are oriented according to their constituent plastic material towards one of the three main streams of recyclable plastic material, namely PET.

B70454 / FR clear, dark PET and high density polyethylene (HDPE). The bottle 1A is then recycled during a transformation into a finished product.

The bottle 1A advantageously comprises at least one layer of polyethylene terephthalate (PET). PET is a recyclable plastic material, especially a thermoplastic material whose deformation depends on the temperature. PET, obtained by polycondensation of terephthalic acid and ethylene glycol, is widely used for food packaging because it is resistant to high pressures (up to 10 bar), high temperatures (it is compatible with heat from a domestic oven) and is easily recyclable.

The bottle 1A preferably comprises at least three layers of recyclable plastic material. Advantageously, said at least three layers are composed of at least two outer layers of PET between which is interposed at least one plastic layer having a barrier effect to at least limit the oxygen input of the outside world into the bottle 1A, said layer having a barrier effect preferably being made of polyamide.

The presence of at least three layers of plastic material preferably makes it possible to limit the entry of oxygen into the interior of the bottle.

Advantageously, the two layers of PET are external, that is to say that a first layer of PET is in direct contact with the outside and that a second layer is in direct contact with the wine in the bottle 1A.

Between these two PET layers is preferably inserted a polyamide layer (PA) whose main function is to substantially limit the oxygen input from the outside to the inside of the bottle 1A. The polyamide used in the present invention is preferably chosen from polyamides having barrier properties with respect to external oxygen and compatible with PET in terms of recycling in particular.

This technical measure makes it possible to substantially reduce the quantity of oxygen, in particular oxygen molecules found in the outside air surrounding the bottle 1A, which can enter the bottle 1A and thus limit the oxidation and degradation of the wine. Thanks to the presence of these three layers, it also improves the shelf life of wine which can be multiplied by four compared to bottles having a single layer of PET.

In addition, these recyclable plastics are particularly lightweight compared to glass and can significantly reduce the weight of wine bottles. Indeed, the weight of a PET bottle is at least five times lower than that of a glass bottle. This reduction in weight obviously makes it possible to reduce the costs of transporting wine and environmental pollution, because for the same quantity of wine transported, PET bottles require a lower energy expenditure than the transport of glass bottles.

Preferably, the three aforementioned layers also make the bottle 1A stronger than the plastic bottles of the prior art. Moreover, the PET used in the present invention is preferably amorphous PET (non-crystallized) which has recognized qualities of transparency, impact resistance, resistance to internal pressure and gas barrier.

Preferably, the recyclable plastic material constitutive of the bottle 1A, in particular the PET and the PA described above, are substantially transparent, that is to say that it lets the light through, B70454 / FR to allow to clearly distinguish its contents with the naked eye, for example by simple visual examination of a user.

This characteristic is particularly important in the case of wine conditioning. Indeed, one of the objectives of the use of transparent plastics is to obtain a bottle whose appearance and main characteristics are substantially identical to those of glass. Advantageously, the plastics constitutive of the bottle 1A are otherwise colorless. However, alternatively, it is also conceivable to use plastics opaque to light and / or colored plastics.

The opening 8, which includes the bottle 1A at its upper end 3, can be closed by means of a closure device 11 made of plastic material which is disposed at the opening 8 of said 1A bottle to close substantially sealed, for example by screwing on a series of helical threads 10 formed on the neck 7 of the bottle 1A. Any other closure system can be envisaged without departing from the scope of this invention.

In the remainder of the description and in the figures, it is considered, in a preferred manner, that the closure device 11 of the present invention is a plastic capsule 11A as represented in FIGS. 2 to 8. Preferably, the capsule 11A allows the bottle 1A to be closed in a substantially watertight manner, that is to say it makes it possible to prevent any unintentional leakage of wine or liquid from the inside of the bottle to the outside.

The capsule 11A is made of a recyclable plastic material compatible in terms of recycling with the recyclable plastic material of the bottle 1A so as to recycle the bottle 1A and the capsule 11A together without necessarily having to separate them beforehand. In

B70454 / FR In other words, the capsule 11A intended to close substantially tightly the bottle 1A can be recycled directly with said bottle 1A without prior separation. Even if the capsule 11A or a portion of the capsule 11A remains on the bottle 1A, it is therefore possible to recycle the bottle 1A with the capsule 11A. This has the advantage of avoiding the separation of the capsule 11A and the bottle 1A and thus promote the speed, performance and quality of recycling.

Advantageously, the capsule 11A has a substantially cylindrical shape and extends longitudinally, between an upper end 12 and a lower end 13, along an extension axis (YY '), the extension axis (YY') being preferably substantially coinciding with the axis (XX ') of the bottle 1A during positioning of the capsule 11A on the neck 7 of the bottle 1A. Preferably, the capsule 11A has a height L13 of between 1 and 10 cm, preferably between 2 and 5 cm, particularly preferably substantially equal to 3 cm.

Preferably, the capsule 11A is formed by a single piece intended to alternately close and / or open the opening 8 of the bottle 1A, for example by screwing on the neck 7. The capsule 11A is advantageously formed of a single holding and may be of a conventional form aluminum caps commonly used, with in particular a band forming extra thickness 14 surrounding said capsule 1A near the end 12. Preferably, the capsule 11A is closed at its upper end 12 and open at its lower end 13 to be slipped on the neck 7 at the opening 8 of the bottle 1A.

Preferably, the capsule 11A has an inner wall 15 intended to come into contact with the bottle 1A and an outer wall 16 in contact with the outside air surrounding the bottle 1A. Advantageously, the

870454 / FR diameter L12 of the upper end 12 of the capsule 11 is between 10 and 50 mm, preferably between 20 and 30 mm and preferably substantially equal to 22.9 mm.

The diameter L16 of the lower end 13 of the capsule 11 is preferably slightly greater than the diameter L12, namely between 10 and 50 mm, preferably between 20 and 30 mm and preferably substantially equal to 23.4 mm. The diameter L11 of the excess thickness 14 is between 10 and 50 mm, more preferably substantially equal to 24.8 mm. The extra thickness 14 has a height L14 preferably between 2 and 15 mm, particularly preferably substantially equal to 5 mm. Advantageously, this extra thickness 14 is positioned at a height L15 of the end 12 of the capsule 11A, substantially equal to 5 mm. The extra thickness 14 has the advantage of facilitating the opening of the closed bottle 1A by promoting the gripping and unscrewing of said capsule 11A.

Advantageously, the capsule 11A is made of a single recyclable plastic material, preferably high density polyethylene (HDPE). HDPE is preferably a recyclable plastic material, opaque, rigid, water vapor barrier and impact resistant.

The capsule 11A is of a nature to be easily recycled since it is composed of a single recyclable plastic material, in particular PERD, compatible with the plastic material of the bottle 1A, to allow a recycling together of said capsule 11A and said 1A bottle without prior separation. In other words, the bottle 1A and the capsule 11A of the invention do not have to undergo an individual recycling operation and can therefore be deposited together in the bins for selective sorting. Indeed, being preferably made of plastics of the same kind, they can undergo the same treatment during recycling.

B70454 / FR Advantageously, recycling typically involves the following steps: selective collection of bottles, sorting bottles, grinding, washing, flotation, flake sorting (optional), granulation (optional) and recycling. . The final stage of recycling is the transformation of the plastic into a new finished product.

PET and HDPE belong to recyclable classes of plastics and can be recycled together without separation. However, they have at least one physical characteristic allowing their possible separation if necessary during the recycling process. Indeed, PET has a density of 1.4, significantly higher than the density of HDPE which is 0.92. The difference in density between these two plastics allows them to be separated in the water during the flotation step after the plastics have been crushed into flakes.

Advantageously, the capsule 11A, once disposed at the opening 8 of the bottle 1A, precisely on the neck 7 by screwing, is a tamper-proof closure device for the bottle 1A. In other words, once the bottle 1A is closed with the capsule 11A after the industrial bottling operation, corresponding in particular to the filling of the bottle 1A with wine, the first opening of the bottle 1A thus closed will be definitely visible at the level of the capsule 11A.

Preferably, the inviolable capsule 11A is composed of two separable elements, lower and upper, respectively formed by a collar 17 intended to remain on the container and a releasable removable portion 18 alternately to open and / or close the bottle 1A. Advantageously, the capsule 11A is inserted on the bottle 1A at its opening 8, on the neck 7. B70454 / FR Advantageously, the collar 17 and the removable part 18 are two separable elements, separated by a space 20, momentarily maintained secured by a series of bridges 19 peripherally disposed around the capsule 11A in the space 20, said bridges 19 being spaced from each other by a fixed or variable distance and self-destructing when the bottle 1A is opened by the user. In other words, the bridges 19 offer a variable resistance calculated according to the desired loosening resistance during opening.

Preferably, the space 20 has a width that varies between 0.3 and 3 mm, preferably substantially equal to 0.5 mm. Advantageously, the bridges 19 are in number and of variable width. Preferably, 8 attachment points with a width substantially equal to 0.2 mm are arranged in a regular manner in the space 20.

Advantageously, the bottle 1A comprises towards its opening 8 a means for locking and holding in position 9 of the collar 17 on said bottle 1A. Preferably, the locking means 9 is disposed at the neck 7 and forms a shoulder 9A. However, any other means that can be used to lock the collar 17 in position on the bottle 1A may alternatively be considered.

Advantageously, after bottling, the bottle 1A is closed using the capsule 11A. At this time, the collar 17 is preferably inserted below the shoulder 9A, at the neck 7, this position thus preventing the collar 17 can be removed from the bottle. Only the removable portion 18 can advantageously be alternately positioned on the bottle by screwing or removed from the latter after unscrewing, after being loosened collar 17. B70454 / FR Advantageously, the collar 17 comprises in particular a first peripheral internal shoulder 21, disposed on the inner wall 15 of the capsule 11A. This first shoulder 21, extends radially towards the axis (YY ') as detailed in Figure 8, projects inwardly of the capsule 11A from the inner wall 15 and allows to come in support against the shoulder 9A of the bottle 1A during the insertion of the capsule 11A on said bottle 1A. This technical measure advantageously allows the collar 17 to be locked in position on the bottle 1A, thus preventing it from being easily removed by the user.

Advantageously, the capsule 11A also comprises a seal 22 which is a barrier against the external oxygen. It may be preferably a conventional seal used in aluminum capsules of the prior art and to prevent the entry of oxygen from the outside air into the bottle 1A containing wine.

Advantageously, the seal 22 has a thickness of between 1 and 4 mm, preferably substantially equal to 2 mm. Preferably, the seal 22 is made of recyclable recyclable plastic material with the plastics constituent of the bottle 1A and the capsule 11A, preferably made of polyethylene foam, for example expanded polyethylene foam, low density.

In other words, the capsule 11A can be recycled directly with its seal 22, no prior separation being necessary. This technical characteristic thus makes it possible to recycle together the bottle 1A, the capsule 11A and the seal 22. However, if necessary to separate the plastics constituting the capsule 11A and the bottle 1A, the polyethylene foam Seal B70454 / FR 22 has a density of 0.25 significantly lower than PET and therefore would not prevent this separation. Preferably, the seal 22 of the present invention also makes it possible both to avoid the development of 2,4,6-trichloroanisole (TCA), a molecule responsible for the taste of cork conventionally encountered with cork stoppers, and to maintain the organoleptic qualities of the wine. In addition, the combination of a plastic capsule 11A and a seal 22 as previously defined appears to be more economical in terms of ripening and storage of the wine than a traditional cork stopper. The seal 22 is advantageously positioned inside the removable portion 18 of the capsule 11A. Preferably, the seal 22 is in particular positioned at the upper end 12, just above the extra thickness 14. Advantageously, the seal 22 has a diameter smaller than the diameter L12 of the capsule 11A so that it can easily be inserted into the capsule 11A. The diameter of the seal 22 is accordingly preferably between 5 and 40 mm, particularly preferably between 10 and 30 mm and preferably substantially equal to 15 mm.

In a preferred embodiment of the invention, the seal 22 is blocked by means of a second peripheral internal shoulder 23, the detail of which is shown in FIG. 7. This second shoulder 23 also projects from from the inner wall 15 of the capsule 11A extending radially in the direction of the extension axis (YY ').

In particular, the second shoulder 23 is preferably disposed at a distance L17 from the end 12 of the capsule 11A, said distance L17 being between 1 and 5 mm and preferably substantially equal to

B70454 / FR at 2.5 mm. This second shoulder 23 describes an angle RI substantially equal to 15 ° and an angle R2 substantially equal to 45 °, as illustrated in FIG. 7. Alternatively, it is also conceivable to use any other means of locking the gasket. sealing 22 without departing from the scope of the present invention.

Finally, the capsule 11A comprises at least one locking means 24 for locking the removable portion 18 in position on the bottle 1A. Preferably, the capsule 11A comprises six locking means 24 protruding from the inner wall 15 of the capsule 11A at its removable portion 18, said locking means being substantially identical to a thread and arranged peripherally and regular on the inner wall 15.

Advantageously, the locking means 24 are a thread corresponding substantially to the helical thread 10, peripheral, continuous and present on the neck 7 of the bottle 1A, which alternatively allows the removable portion 18 to be screwed and unscrewed at the level of said neck 7. Thus, preferably, the removable portion 18 can be screwed and / or unscrewed on the neck 7 of the bottle 1A. Alternatively, any other locking means allowing easy opening and closing of the bottle 1A with a capsule 11A can be envisaged.

Thus, the present invention preferably relates to a recyclable plastic container formed by a bottle 1A comprising a neck 7 at the top of which is an opening 8, said opening 8 being closed by a capsule 11A comprising a collar 17 intended to surround the neck 7 of the bottle 1A and a detachable removable part 18 which alternatively allows opening and / or closing said bottle 1A, a seal 22 which is a barrier towards oxygen coming from outside the bottle 1A being positioned inside said capsule 11A.

The present invention also relates to a recyclable plastic assembly comprising: a PET bottle 1A substantially impermeable to the oxygen inlet coming from the outside of the bottle 1A, containing wine, and a capsule 11A recyclable polyethylene compatible with PET in terms of recycling, preferably in PERD, intended to substantially sealing said PET bottle 1A, said capsule 11A comprising a seal 22 forming an external oxygen barrier.

In this assembly, the bottle 1A comprises at least one layer of recyclable plastic material, preferably at least two layers of PET and a polyamide layer, so as to limit the maximum oxygen input from the outside to the inside the bottle 1A. The layer or set of plastic layers constituting the bottle 1A is preferably transparent in order to have an appearance substantially identical to that of glass.

The capsule 11A of such an assembly is preferably in PERD thus allowing its recycling with the bottle 1A without prior separation. The seal 22 of said capsule 11A enhances the capacity of the bottle 1A to limit the oxygen inlet from the outside to the inside of the bottle 1A, in particular to prevent the oxidation of the wine that said bottle 1A contains.

The above-mentioned recyclable plastic assembly may be manufactured during a manufacturing process in which: -the manufacture of a PET bottle 1A comprising an opening 8 and a recyclable polyethylene capsule 11A; the filling of the PET bottle 1A with wine, B70454 / FR the positioning of the capsule 11A at the opening 8 of the PET bottle 1A in order to allow substantially sealed tamperproof closure of said bottle 1A.

In order to manufacture the PET bottle 1A, use is preferably made of an injection blow molding process during which a preform forming step is firstly carried out and then, in a second step, a blowing step for obtaining the preform. final shape of the bottle 1A. It is preferably a conventional method of producing a PET bottle 1A, in particular for a bottle made of monolayer PET or multilayer.

The monolayer or multilayer PET bottles 1A thus produced are filled with wine and closed with a capsule 11A. Preferably, the capsule 11A is a recyclable plastic capsule, especially in PERD, as described above. The capsule 11A is positioned on the bottle 1A, precisely at its neck 7 by screwing, and thus forms a tamper-proof closure device in two parts.

Preferably the capsule 11A comprises a seal 22 as described above. The manufacturing method therefore advantageously comprises a step of positioning a seal 22 inside the capsule 11A in order to barrier vis-à-vis the external oxygen. During this step, the seal 22 is preferably inserted into the capsule 11A at its upper end 12 and is blocked with a shoulder 23, as explained above.

The present invention finally relates, independently of the bottle, to the assembly and the manufacturing method previously described, a capsule 11A of recyclable plastic material compatible in terms of

B70454 / FR recycling with a PET plastic material, said capsule 11A being intended to ensure the substantially sealed closure of a container for containing wine, preferably a 1A PET bottle monolayer or multilayer.

Preferably, the capsule 11A of recyclable plastic material comprises a seal 22 which is a barrier towards the external oxygen, said seal 22 being compatible with said capsule in terms of recycling. The capsule 11A of the present invention has the advantage of being manufactured in a single recyclable plastic material that can be directly recycled with PET, said plastic being widely distributed in food packaging bottles.

The set comprising a PERD capsule and a monolayer or multilayer PET bottle for the preservation of wine is easily recyclable without prior separation. On the other hand, in terms of energy cost, this set of low weight compared to glass can significantly reduce the cost of transport and pollution related to the handling and transport of bottled wine.

Compared to single-layer PET bottles, multilayer PET bottles can also increase the storage time of wine in a plastic bottle by limiting oxygen input. This barrier characteristic against oxygen is reinforced with the polyamide layer and the seal of the capsule allowing storage times up to four times longer than those encountered with bottles in PET monolayer.

B70454 / EN

Claims (10)

1 container (1) made of recyclable plastic material substantially impermeable to oxygen input from outside, said container (1) being intended to contain a liquid food substance whose properties are liable to be altered in the presence of oxygen, said container (1) comprising an opening (8) closable with a closure device (11) of plastic material which is disposed at the opening. (8) of said container (1) to close substantially sealing, characterized in that the closure device (11) is made of a recyclable plastic compatible in terms of recycling with the recyclable plastic material of the container (1), so as to recycle together the container (1) and the closure device (11) without necessarily having to separate beforehand. 2 - container (1) of recyclable plastic material according to claim 1 characterized in that it comprises at least one layer of polyethylene terephthalate (PET). 3 - container (1) of recyclable plastic according to claim 2 characterized in that it comprises at least three layers of recyclable plastic material. 4 - container (1) of recyclable plastic according to claim 3 characterized in that said at least three layers are composed of at least two outer layers of PET between which is interposed at least one layer of plastic having a barrier effect for at least limiting the oxygen input of the outside world into the container (1), said layer having a barrier effect preferably being of polyamide. 870454 / EN 5 - container (1) of recyclable plastic material according to one of the preceding claims characterized in that the closure device (11) is made of a single recyclable plastic material, preferably high density polyethylene (HDPE). 6 - container (1) of recyclable plastic material according to one of the preceding claims characterized in that the closure device (11) is formed by a single piece intended to come alternately close and / or open the opening (8). 7 - container (1) of recyclable plastic material according to one of claims 1 to 5 characterized in that the closure device (11), once arranged at the opening (8) of the container (1), is a tamper-proof closure device (11) for the container (1). 8 - container (1) of recyclable plastic material according to claim 7 characterized in that the tamper-proof closure device (11) is composed of two separable elements formed by a collar (17) intended to remain on the container and a removable part ( 18) loosely allowing alternatively to open and / or close the container (1). 9 - container (1) of recyclable plastic material according to claim 8 characterized in that it comprises towards its opening (8) a means for locking and holding in position (10) of the collar (17) on the container (1) . Recyclable plastic container (1) according to one of the preceding claims, characterized in that the closing device (11) comprises a seal (22) which is a barrier against the external oxygen. B70454 / FR11 Recyclable plastic container (1) according to Claim 10, characterized in that the seal (22) is made of recycled recyclable plastic material with the constituent plastics of the container (1) and the device closure (11), preferably made of polyethylene foam. 12-container (1) of recyclable plastic material according to claims 8 and 10 characterized in that the seal (22) is positioned inside the removable portion (18) of the closure device (11). 13 container (1) of recyclable plastic material according to one of the preceding claims characterized in that the recyclable plastic material is substantially transparent to clearly distinguish its contents. 14-recyclable plastic container (1) according to one of the preceding claims characterized in that the liquid food substance is a liquid containing ethanol, preferably wine. Container (1) made of recyclable plastic material according to one of the preceding claims, characterized in that it is formed by a bottle (1A) comprising a neck (7) at the top of which is an opening (8), said opening ( 8) being closed by a capsule (11A) comprising a collar (17) intended to surround the neck (7) of the bottle (1A) and a releasable removable portion (18) which alternatively allows opening and / or closing said bottle (1A), an oxygen barrier seal (22) from outside the bottle (1A) being positioned within said capsule (11A). B70454 / FR16 -A recyclable plastic assembly comprising: a PET bottle (1A) substantially impermeable to the oxygen inlet coming from the outside of the bottle (1A), containing wine, and a capsule (11A) made of recyclable polyethylene compatible with PET in terms of recycling, preferably HDPE, for substantially sealing said PET bottle (1A), said capsule (11A) comprising a seal (22) which is a barrier to oxygen outside. 17 -Process of manufacturing the set of recyclable plastic material according to claim 16 wherein is carried out: the manufacture of a bottle (1A) of PET comprising an opening (8) and a capsule (11A) of polyethylene recyclable, filling the PET bottle (1A) with wine, positioning the capsule (11A) at the opening (8) of the PET bottle (1A) in order to allow the substantially watertight tamperproof closure of the bottle (1A). said bottle (1A). 18 -Process of manufacture of the recyclable plastic assembly according to claim 17 characterized in that it comprises a step of positioning a seal (22) inside the capsule (11A) to barrier against the external oxygen. 19- capsule (11A) of recyclable plastic material compatible in terms of recycling with a PET plastic material, said capsule (11A) being intended to ensure the substantially sealed closure of a container (1) intended to contain wine, preferably a PET bottle (1A). B70454 / FR20 -Capsule (11A) recyclable plastic material according to claim 19 characterized in that it comprises a seal (22) barrier against the external oxygen, said seal (22) being compatible with said capsule (11A) in terms of recycling. B70454 / EN