(19)
(11) EP 4 467 475 A1

(12) EUROPEAN PATENT APPLICATION

(43) Date of publication:
27.11.2024 Bulletin 2024/48

(21) Application number: 23175304.7

(22) Date of filing: 25.05.2023
(51) International Patent Classification (IPC): 
B65D 3/20(2006.01)
B65D 5/42(2006.01)
B65D 35/12(2006.01)
B65D 3/28(2006.01)
B65D 35/10(2006.01)
(52) Cooperative Patent Classification (CPC):
B65D 35/10; B65D 35/12; B65D 3/20; B65D 3/28; B65D 5/4279
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(71) Applicant: Aisapack Holding SA
1896 Vouvry (CH)

(72) Inventors:
  • DEMAUREX, Gilles
    1920 Martigny (CH)
  • PELLISSIER, Joachim
    1926 Fully (CH)

(74) Representative: Grosfillier, Philippe 
André Roland SA IP Attorneys & Services Avenue Collonges 21
1004 Lausanne
1004 Lausanne (CH)

   


(54) PACKAGING COMPRISING A TUBULAR BODY


(57) The invention relates to a packaging, such as a tube, a bottle or a can, comprising a tubular body (2) and a component (7). The component comprises at least a first element (4) and a second element (5) and is assembled to the tubular body (2) by fixing one of said elements (4,5) to an internal face of the tubular body (2) and on the other of said elements (4,5) to an outer face of the tubular body (2).




Description

TECHNICAL AREA



[0001] The present invention is in the field of packaging, in particular packaging based on cellulose or essentially based on cellulose. It relates more specifically to packaging comprising a tubular body (for example of cylindrical shape with a round or oval section) based on cellulose and at least a component (for example a bottom or a neck) fixed to one end of the tubular body in order to form packaging such as a tube, a bottle, a can, a cartridge or a cylindrical box.

[0002] The invention applies to the field of packaging and in particular that of flexible tubes intended to contain products such as creams or pastes; or the field of cans in replacement of aluminum; or the field of bottles for cosmetic products or the field of cylindrical containers to contain food products for example.

STATE OF THE ART



[0003] The publication WO2022053879 describes the manufacture of tubular packaging comprising a high cellulose content, and in particular the way of manufacturing the components attached to the end of the tubular body of the packaging. These components are, for example, bottoms or necks thus making it possible to obtain flexible tubes or bottles. According to publication WO2022053879, the components have a structural part and at least a functional part, the structural part having a high content of cellulose and the functional part having a reduced content of cellulose.

[0004] The publication WO2022185176 describes a method for manufacturing tubular packaging by welding comprising a high cellulose content while being leaktight at its welds. The packages are, for example, flexible tubes, bottles or even cylindrical boxes. In particular, the publication WO2022185176 teaches how to obtain a seal at the level of the intersection of the longitudinal and transverse welds. This publication proposes the use of an internal welding strip which connects the ends of the tubular body placed end to end, said internal strip comprising a sealing material which becomes liquid during welding and fills the cavities formed at the intersection of the welds.

[0005] The packaging obtained from the teaching of publications WO2022053879 and WO2022185176 have a high cellulose content, good barrier properties and strong sealing. In addition, these packaging resist to high pressures in the packaging which makes them particularly interesting for multiple uses. In addition, as they contain a high content of cellulose, these packaging are mostly biosourced and easily recyclable.

[0006] However, it has been observed that such packages have low resistance to vertical load (known as "top load"). This low resistance stems in particular from the low cohesion of the cellulose layer of the cylindrical body of the packaging. This weakness limits the stacking of packaging, which makes industrial logistics, transport and distribution more complex.

[0007] The aim of the invention is in particular to overcome the aforementioned drawbacks and to improve the resistance of cylindrical packaging made from cellulose and produced by assembly.

SUMMARY AND PRINCIPLE OF THE INVENTION



[0008] An aim of the invention is to improve known methods, machines and products.

[0009] Another aim of the invention is to improve the packagings made from materials having a low cohesion, such as for example sheets based on cellulose, the processes and the machines for their production.

[0010] Another object of the invention is to remedy the problems of resistance to the vertical load encountered with the tubes and packagings of the state of the art whose parts are made of materials with low cohesion, such as the sheets or molded parts which are for example based on cellulose.

[0011] The invention relates to packagings based on materials that have a low cohesion, such as for example cellulose, comprising several assembled parts including at least a tubular body and a part fixed to the end of the tubular body, said fixed part being for example a bottom on which rests the package or a head comprising a system for opening and closing the packaging. In the context of the present application, this fixed part (for example a bottom and/or a head) will be generally referred to as a "component".

[0012] In the context of the present invention, the tubular body is, for example, based on cellulose and can be monolayer or multilayer, the whole or the majority of the tubular body being formed by low cohesion materials forming a so-called "structural" layer of packaging. In addition, the tubular body may include a so-called "functional" layer to provide particular characteristics and properties to the packaging. Said functional layer can be monolayer or multilayer. The discussion below in this application of such structural and functional layers (all monolayer or multilayer) and their materials for the component applies to the tubular body which may comprise identical or similar layers. Such tubular bodies with structural and functional parts/layers are also described for example in the publications WO2022053879, WO2022009016, WO2022185176 and reference is made to these publications.

[0013] The invention relates more specifically to the assembly zone between the tubular body of the packaging and the component (i.e. the part(s) attached to the ends of the tubular body). It is defined in particular by the features of the claims of the present application.

[0014] According to the invention, the assembly between the tubular body and the component comprises in particular but not exclusively the confinement of the end of the tubular body between a first and a second element of the component; said first and second elements being fixed respectively on an internal face and an external face of the tubular body.

[0015] It has been determined by measurements and tests that the combined action of the first element and the second element makes it possible to improve the resistance of the packaging and in particular to guarantee a high burst resistance as well as a resistance to a high vertical load. This improved resistance of the packaging is obtained despite the low cohesion of the material forming the tubular body (paper, cardboard for example).

[0016] In embodiments of the invention, the first element comprises at least a low cohesion material such as for example a material or materials based on cellulose.

[0017] In embodiments of the invention, the second element comprises at least a low cohesion material such as for example a material or materials based on cellulose.

[0018] In embodiments of the invention, the first element has a thickness greater than 100 microns, and it contributes in particular to the rigidity of the component and to the resistance of the assembly (for example resistance, tightness, barrier properties) and to the stiffness of the component. The first element can thus form a so-called "structural" layer of the product. This layer can include or be combined with at least a so-called "functional" layer making it possible to provide additional properties to the packaging (such as, for example, sealing or barrier properties).

[0019] In embodiments of the invention, the first element is formed of a thin layer (mono- or multi-layer), for example with a thickness of less than 100 microns, and it contributes in particular to the performance of the assembly (by resistance, sealing, barrier properties) but it only contributes slightly to its rigidity (unlike the structural layer). Preferably, this thin layer has a multilayer structure, with at least a layer which has a high tensile strength, and at least a ayerwhose properties make it possible to preserve the product contained in the packaging (suitability for contact with the packaged product, barrier properties such as to humidity, aromas, oxygen). The thin layer may for example be a multilayer paper (paper/PE, or PE/paper/PE, sealing varnish/paper/metal or metallized paper or paper/PE/Evoh/PE). It is therefore possible to have both low cohesion properties in the thickness (paper) and barrier properties (for example PE moisture barrier, metallized layer moisture barrier to aromas and oxygen).

[0020] In embodiments of the invention, the second element has a thickness greater than 100 microns, and it contributes in particular to the rigidity of the component and to the resistance of the assembly (for example resistance, tightness, barrier properties) and to the stiffness of the component. The second element can thus form a so-called "structural" layer of the product. This layer can include or be combined with at least a so-called "functional" layer making it possible to provide additional properties to the packaging (such as, for example, sealing or barrier properties).

[0021] In embodiments, the second element forms a thin layer (mono- or multi-layer), for example with a thickness of less than 100 microns, and it contributes in particular to the performance of the assembly (for example resistance, tightness, barrier properties). The thin layer can be for example a multilayer paper as described above. It is therefore possible to have both low cohesion properties in the thickness (paper) and barrier properties (for example PE moisture barrier, metallized layer moisture barrier to aromas and oxygen).

[0022] The embodiments described above may be combined: for example a first element in the form of a structural layer and a second element in the form of a thin layer, or else a first element in the form of a thin layer and a second element in the form of structural layer, or else a first element in the form of a thin layer and a second element in the form of a thin layer, or else a first element in the form of a structural layer and a second element in the form of a structural layer.

[0023] In embodiments, the thin layer of the first element or of the second element can be a so-called "functional" layer which provides barrier layer functionalities for example. Such a functional layer is useful for example to isolate the structural layer from its environment, for example the product contained in the packaging (typically if the product is liquid or semi-liquid) or the external environment in which the packaging is placed (for example a humid environment).

[0024] In embodiments, the first element includes at least a structural layer and a functional layer.

[0025] In embodiments, the second element includes at least a structural layer and a functional layer.

[0026] In embodiments, the first element and the second element are two separate parts. In other embodiments, the first element and the second element are one and the same part.

[0027] In embodiments of the invention where both the first and the second element are formed of thin layers, it may be advantageous to add an intermediate element, for example of thickness greater than 100 microns, said intermediate element having the effect of stiffening the component; said intermediate element can either be imprisoned between the first and second element or/and fixed to the first and/or to the second element.

[0028] In embodiments of the invention, the intermediate element comprises at least a low cohesion material, such as for example a material based on cellulose.

[0029] According to embodiments of the invention, the tubular body, the first element, the second element and the intermediate element can be composed of several layers to jointly allow the obtaining of organoleptic properties of the internal surface of the packaging, barrier properties to moisture or oxygen, and to facilitate the assembly of components. Advantageously, the low cohesion material (for example a material based on cellulose) is largely predominant in the packaging so that the packaging is essentially formed of said low cohesion material to allow its recycling in the corresponding sector. Advantageously, the majority material represents at least 85% of the packaging, preferably at least 95% of the packaging.

[0030] According to embodiments of the invention, the component connected to the tubular body comprises at least the first and the second element. It can comprise additional elements such as for example an intermediate element which increases the rigidity and the functionality of the component. The component is for example a packaging bottom or an end comprising opening and closing means. The component may comprise an orifice such as a neck for example.

BRIEF DESCRIPTION OF THE DRAWINGS



[0031] 

Figures 1 to 8 illustrate sectional views of a package according to different embodiments of the invention.

Figures 9 to 12 illustrate examples of packagings according to embodiments of the invention.


DETAILED DESCRIPTION OF THE INVENTION



[0032] In the present description of the invention and in the present application, the expression "plastic-based" is used to describe a monolayer or multilayer structure containing mainly plastic material, such as the thermoplastic resins used in the field of packaging. These resins are, for example, virgin or recycled polyethylenes. Multilayer structures can contain functional layers in low percentage to allow recycling. These functional layers are, for example, EVOH layers and adhesive layers.

[0033] In the present description of the invention and in the present application, the expression "based on cellulose" is used to designate a monolayer or multilayer structure containing mainly cellulose. These structures can be in the form of sheets or laminates or even in three-dimensional form. Low percentage functional materials and/or layers can also be used to give the packaging the desired properties (impermeability, food quality, barrier to humidity and/or oxygen). These functional layers are, for example, very thin metallized layers, layers of polyethylene, EVOH or adhesive layers or even varnishes and they are added (alone or in combination) to the cellulose-based layers.

[0034] In the description of the invention and in the present application, the expressions "low cohesive material" or "low cohesion material" is used to designate the material present in the tubular body 2. The expression used describes the behavior of the material in the tubular body which tends to delaminate at the ends 3 when the package is stressed via internal or external pressure. Thus with this type of material, the rupture of the packaging is created by delamination from the end 3 of the tubular body and propagates in the thickness of the wall of the tubular body. This is particularly the case for cellulose-based structures such as paper-based laminates.

Numerical references



[0035] 

1: packaging part

2: tubular body

2': lid

3: end of the tubular body

4: first element (monolayer or multilayer)

5: second element (monolayer or multilayer)

6: intermediate element (monolayer or multilayer)

7, 7': component

8: flexible tube

9: bottle

10: can

11: tubular box

12: assembly area

14: functional layer (monolayer or multilayer)

15: functional layer (monolayer or multilayer)



[0036] Figure 1 illustrates an embodiment of the invention in which a packaging part 1 comprises a tubular body 2 connected by welding or gluing at its ends to a component 7; the component 7 comprising a first element 4 fixed to the internal face of the tubular body 2 and a second element 5 fixed to the external face of the tubular body 2.

[0037] Figure 1A illustrates an embodiment of the invention comprising functional layers 14, 15 on the first element 4 and the second element 5.

[0038] Figure 2 illustrates an embodiment of the invention, in which the first element 4 is linked to the second element 5. Of course, the reverse configuration is also possible.

[0039] Figure 2A illustrates another embodiment of the invention. In this embodiment, the first element 4 and the second element 5 are formed in a single part.

[0040] Figure 3 illustrates another embodiment of the invention in which component 7 comprises an intermediate element 6 trapped between first element 4 and second element 5.

[0041] Figure 4 illustrates another embodiment of the invention in which the intermediate component 6 is linked to the first element 4 and/or to the second element 5.

[0042] Figure 5 illustrates an embodiment of the invention in which the first element 4 and the second element 5 are fixed radially respectively on the internal and external face of the tubular body 2.

[0043] Figure 6 illustrates an embodiment of the invention in which an intermediate element 6 is trapped between the first element 4 and the second element 5 and in which the first element 4 and the second element 5 are fixed radially respectively on the internal and external faces of the tubular body 2.

[0044] Figure 7 illustrates a variant of the embodiment illustrated in Figure 4 in which the first element 4 and the second element 5 are welded radially to the tubular body 2.

[0045] In the embodiments of Figures 1 to 7, the component 7 forms for example a bottom of the packaging 1.

[0046] Figure 8 illustrates an embodiment of the invention in which the component 7 comprises an orifice for extracting the product contained in the packaging. The component 7 is for example a tube head in this mode of execution.

[0047] Figure 9 illustrates an embodiment of the invention in the form of a packaging tube intended to contain, for example, liquid or viscous products such as toothpastes, cosmetic or pharmaceutical products, food products or even products such as glues, paints or sealants.

[0048] Figure 10 illustrates an embodiment of the invention in the form of a vial or a bottle.

[0049] Figure 11 illustrates an embodiment of the invention in the form of a can-type packaging intended to contain, for example, liquid products, or solid products.

[0050] Figure 12 illustrates an embodiment of the invention in the form of a packaging of the cylindrical box type intended to contain, for example, dry products such as powder products, in grains, biscuits, etc.

[0051] The principle of the invention illustrated in Figure 1 concerns a packaging comprising at least a tubular body 2 and a component 7 fixed at the ends 3 of said tubular body; said tubular body being based on a low cohesion material such as cellulose. Component 7 in the description of the invention designates the elements fixed to the end of the tubular body and is, for example, a bottom or a neck. In Figure 1, the component 7 which forms a packaging bottom, comprises a first element 4 fixed to the internal face of the end 3 of the tubular body 2 and a second element 5 fixed to the external face of the end 3 of the tubular body 2. The first element 4 and the second element 5 are preferably fixed by welding or gluing to the tubular body 2. Of course, other equivalent fixing methods are possible. The assembly 12 according to the invention of the tubular body 2 and of the component 7 makes it possible to significantly improve the resistance of the packaging, in particular its resistance to bursting under the effect of an internal pressure, its resistance vertical load (stacking of packaging during transport).

[0052] Assembly mode 12 improves the strength of the packaging. The bursting and/or vertical load resistance is improved at least by a factor of 1.5, advantageously by a factor of 2 and preferably by a factor of 5 compared to the same packaging having a component 7 formed solely of first element 4 or of the second element 5 as it could be measured by tests and experiments.

[0053] Figure 1A illustrates an embodiment in which functional layers are placed/applied on the first element 4 (layer 14) and on the second element 5 (layer 15). Of course, this is an illustrative embodiment and only one functional layer can be used (either layer 14 or else layer 15) depending on the product contained or the environment: indeed, in some cases, one wants to put a separation between the product contained in the packaging (for example a liquid) and the first element 4 and/or one wants to put a separation between the environment (for example a humid environment) and the second element 5. It is also possible to use such functional layers in the other embodiments described and illustrated in the present application and their equivalents.

[0054] As described in the present application, the functional layers 14, 15 can be monolayer or multilayer and be formed from the materials mentioned in the present application for the functional layers and the thin layers.

[0055] Figure 2 illustrates another embodiment of the invention. In this example, the component 7 ensuring the closure of the end of the packaging comprises a first element 4 and a second element 5 which are integral with each other or attached to each other. The first element 4 is fixed on the internal face of the end 3 of the tubular body 2; the second element 5 is fixed on the external face of the end 3 of the tubular body 2; the second element 5 is also at least fixed locally on the first element 4. The first and second elements 4, 5 are advantageously linked by welding or by gluing, for example. Assembly mode 12 gives the packaging resistance to bursting and high vertical pressure, despite the weakly cohesion properties of the tubular body 2.

[0056] According to the embodiment of the invention illustrated in Figure 2, the first element 4 is produced for example either by molding, or by injection, or by compression molding.

[0057] According to another alternative embodiment, the first element 4 is fixed to the internal face of the tubular body 2 during the molding operation, by a so-called overmolding operation. A preferred embodiment of the invention consists in carrying out the overmolding operation in a molding compression mold.

[0058] In the embodiment of Figure 2A, the first element 4 and the second element 5 are formed in a single part. This part can be monolayer or multilayer, for example it can comprise a structural layer and at least a functional layer.

[0059] Figure 3 illustrates another embodiment of the invention in which the component 7 comprises the first element 4, the second element 5 and an intermediate element 6. The first element 4 in the form of a thin film, for example the thin layer as described above, is fixed to the internal face of the tubular body 2. The second element 5, also in the form of a thin film, for example the thin layer as described above, is fixed to the external face of the tubular body 2. An intermediate element 6 of greater thickness is trapped between the first element and the second element. The intermediate element 6 provides rigidity to the component 7 formed by the first element 4, the second element 5 and the intermediate element 6.

[0060] The assembly of the embodiment illustrated in Figure 3 has a resistance to bursting and to high vertical pressure despite the low cohesion properties of the tubular body 2.

[0061] Another advantage of the assembly illustrated in Figure 3 stems from the possibility of making assembly 12 without using a tool which passes through tubular body 2. Thus, the assembly illustrated in Figure 3 is particularly advantageous for closing a packaging after its filling.

[0062] According to the embodiment of the invention illustrated in Figure 3, the intermediate element 6 is not fixed to the first element 4 and to the second element 5.

[0063] Figure 4 illustrates an alternative embodiment of the assembly illustrated in Figure 3 according to which the intermediate element 6 is fixed at least partially to the first element 4 and/or to the second element 5.

[0064] Figure 5 illustrates another embodiment of the invention, according to which the component 7 comprises a first element 4 and a second element 5 in the form of a film; the first element 4 and the second element 5 being linked to each other. According to this embodiment, the ends 3 of the tubular body are not curved towards the axis of the tubular body. The first element 4 and the second element 5 are therefore fixed radially to the internal and external surfaces of the tubular body 2.

[0065] Figure 6 illustrates an embodiment of the invention in which the first element 4 and the second element 5 are welded radially to the end 3 of the tubular body 2. An intermediate element 6 advantageously based on cellulose is inserted between the first element 4 and the second element 5.

[0066] Figure 7 illustrates an embodiment of the invention similar to that shown in Figure 4, but in which the ends 3 of the tubular body are not curved towards the axis of the tubular body 2.

[0067] The embodiments of the invention illustrated in Figures 3, 4 and 7 are particularly advantageous for closing packaging after filling. These embodiments make it possible to fix the component 7 on the end of the tubular body 2 without using tools passing inside the tubular body 2.

[0068] Figure 8 illustrates another embodiment of the invention in which component 7 has an orifice for extracting the product contained in the packaging. Thus the invention illustrated by Figures 1 to 8 can be used for different types of components which may be bottoms, tube shoulders, bottle necks or even components with integrated opening and closing systems. For example, to form a packaging, a component 7 according to one of the embodiments of FIGS. 1 to 7 can be fixed to one end of a tubular body as the bottom of the packaging and to the other end of the tubular component 7 according to the embodiment of Figure 8 such as a tube head.

[0069] According to embodiments of the invention, the first element 4 and/or the second element 5 and/or the intermediate element 6 are plastic-based; the plastic preferably being recycled plastic.

[0070] According to embodiments of the invention, the first element 4 or/and the second element 5 or/and the intermediate element 6 are based on a low cohesion material such as cellulose.

[0071] According to preferred embodiments of the invention, the intermediate element 6 is based on cellulose.

[0072] According to other preferred embodiments of the invention, the first element 4 and/or the second element 5 are based on cellulose.

[0073] According to embodiments of the invention, the first element 4 and the second element 5 are based on cellulose in sheet or laminate form.

[0074] According to other embodiments of the invention, the first element 4 and the second element 5 are based on molded cellulose.

[0075] According to embodiments, the materials can be combined: for example, the element 4 can be based on plastic and the element 5 based on a low cohesion material, or the reverse.

[0076] Preferably, when one element (or both) is based on a low cohesion material, depending on the product contained in the packaging and the environment in which the packaging will be placed, a functional layer is added as described in this application. This embodiment is illustrated in Figure 1A by way of a non-limiting example. This functional layer will advantageously be placed on the first element 4 on the inside of the packaging (layer 14) and/or on the second element 5 on the outside of the packaging (layer 15).

[0077] According to preferred embodiments of the invention, the cylindrical body 2 and the component 7 are based on cellulose and have a cellulose content greater than 70%, preferably greater than 85% and advantageously greater than 90%.

[0078] According to embodiments of the invention, the first element 4 is based on plastic and the second element 5 is based on a low cohesion material such as cellulose.

[0079] According to embodiments of the invention, the intermediate element 6 is based on cellulose and the first element 4 and second element 5 are based on plastic resin.

[0080] According to embodiments of the invention, the intermediate element 6 and the second element 5 are based on cellulose; the first element 4 is plastic-based.

[0081] According to embodiments of the invention, the first element 4, the second element 5 and the intermediate element 6 are based on cellulose.

[0082] Other combinations of materials are possible within the scope of the present application.

[0083] Figures 9, 10, 11 and 12 respectively illustrate a flexible tube 8 intended to contain pasty products; a bottle 9 intended to contain cosmetic products such as creams or shampoos; a packaging 10 in the form of a can for liquid or solid food products; and finally a resealable packaging 11 in the form of a cylindrical box with a lid 2' for food or cosmetic products.

[0084] Embodiments have been described to provide a general understanding of the principles of structure, function, manufacture, and use of the systems and methods described in this application. Several of these embodiments are illustrated in the accompanying drawings and described above. The systems and methods specifically described in this application and illustrated in the accompanying drawings are non-limiting embodiments and the scope of the present invention is not defined solely by the claims. The characteristics illustrated or described in relation to one embodiment can be combined with the characteristics of other embodiment(s). Such modifications and variations are intended to be included within the scope of the present invention. A number of problems with conventional methods and systems are noted herein and the methods and systems described herein may solve one or more of these problems. Further, while this invention has been described in conjunction with a number of embodiments, the alternatives, modifications, equivalents and variations which are within the spirit and scope of the present invention are also covered by this application.


Claims

1. Packaging, such as a tube, a bottle or a can, comprising a tubular body (2) formed essentially of a low cohesion material and a component (7), said component (7) comprising at least a first element (4) and a second element (5) and being assembled to the tubular body (2) by fixing one of said elements (4.5) to an internal face of the tubular body (2) and the other of said elements (4.5) to an outer face of the tubular body (2).
 
2. Packaging according to claim 1, wherein the first element (4) is fixed to an internal face of the tubular body (2) and the second element (5) to an external face of the tubular body (2).
 
3. Packaging according to claim 1 or 2, wherein the first element (4) is formed of at least a low cohesion material.
 
4. Packaging according to any of claims 1 to 3, wherein the first element (4) forms a structural layer.
 
5. Packaging according to the preceding claim, wherein the first element (4) has a thickness greater than 100 microns.
 
6. Packaging according to any of claims 1 to 3, wherein the first element (4) forms a thin layer.
 
7. Packaging according to the preceding claim, wherein the first element (4) has a thickness of less than 100 microns.
 
8. Packaging according to any of the preceding claims, wherein the second element (5) is formed of at least a low cohesion material.
 
9. Packaging according to any of the preceding claims, wherein the second element (5) forms a structural layer.
 
10. Packaging according to the preceding claim, wherein the second element (5) has a thickness greater than 100 microns.
 
11. Packaging according to any of claims 1 to 8, wherein the second element (5) forms a thin layer.
 
12. Packaging according to the preceding claim, wherein the second element (5) has a thickness of less than 100 microns.
 
13. Packaging according to any of the preceding claims, wherein the low cohesion material is based on cellulose.
 
14. Packaging according to any of the preceding claims, comprising an intermediate element (6), said intermediate element (6) being either imprisoned between the first element (4) and second element (5) or/and fixed to the first element (4) and/or to the second element (5).
 
15. Packaging according to any of the preceding claims, wherein the first element (4) and/or the second element (5) and/or the intermediate element (6) comprise several layers.
 
16. Packaging according to any of the preceding claims, wherein the first element (4) and/or the second element (5) comprise(s) a functional layer.
 
17. Packaging according to claim 15 or 16, wherein the low cohesion material predominates in the component (7) and the other layers comprise metallized layers of very thin thickness and/or layers of polyethylene and/or EVOH and /or adhesive layers and/or varnish.
 
18. Packaging according to any of the preceding claims, wherein the component (7) is fixed by welding or gluing to the tubular body (2).
 
19. Packaging according to any of the preceding claims, wherein the component is a bottom and/or a tube head with an extraction orifice.
 
20. Packaging according to any of the preceding claims, said packaging being a tube (8), or a bottle (9) or a can (10) or a tubular box (11).
 




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Cited references

REFERENCES CITED IN THE DESCRIPTION



This list of references cited by the applicant is for the reader's convenience only. It does not form part of the European patent document. Even though great care has been taken in compiling the references, errors or omissions cannot be excluded and the EPO disclaims all liability in this regard.

Patent documents cited in the description