Packaging and manufacturing processes

Abstract

The present invention relates to a packaging such as a tube, bottle, or can, the packaging comprising a tubular body (2) having at least a first end (3), the body being made of an essentially low-cohesive material, and further comprising a component (7,7'), the component (7,7') comprising at least a first element (4) and a second element (5), the first and second elements being made of an essentially low-cohesive material, and the component (7,7') being assembled to the end (3) of the tubular body (2) by fixing the first element (4) to the inner surface of the tubular body (2) and the second element (4,5) to the outer surface of the tubular body (2).

Description

Background Art

[0001] [Corresponding Application]

[0002] This international patent application claims priority to European Patent Application No. EP23175304.7, filed on May 25, 2023, in the name of AISAPACK HOLDING SA, and the content of the prior application is incorporated herein by reference in its entirety. [Technical Field]

[0003] The present invention belongs to the field of packages, particularly to the field of cellulose-based or essentially cellulose-based packages. More specifically, the present invention relates to a package comprising a cellulose-based tubular body (e.g., a cylindrical body with a circular or elliptical cross-section) and at least one component (e.g., a bottom or a neck) fixed to one end of the tubular body, forming a package such as a tube, a bottle, a can, a cartridge or a tubular box.

[0004] The present invention is applicable to the field of packages, particularly to the field of flexible tubes intended to contain products such as creams and pastes, or to the field of cans replacing aluminum, or to the field of cosmetic bottles, and further to the field of cylindrical containers for containing, for example, food. [State of the Art]

[0005] Publication WO2022053879 describes a method for manufacturing a high-cellulose-containing tubular package, particularly a method for manufacturing components attached to the ends of the tubular body of the package. These components are, for example, bottoms or necks, whereby flexible tubes and bottles can be obtained. According to publication WO2022053879, the component has a structural part and at least a functional part, the structural part having a high cellulose content and the functional part having a reduced cellulose content.

[0006] Publication WO2022185176 describes a method for manufacturing tubular packaging that is high in cellulose but leak-free at the welded joints by welding. The packaging includes, for example, flexible tubes, bottles, and even tubular boxes. In particular, Publication WO2022185176 teaches a method for obtaining a seal at the intersection of longitudinal and transverse welds. The publication proposes the use of an internal welding strip to connect the ends of butt-jointed tubular bodies, the internal strip containing a sealing material that becomes liquid upon welding and fills the cavity formed at the intersection of the welds.

[0007] The packaging materials obtained from the teachings in publications WO2022053879 and WO2022185176 possess a high cellulose content, good barrier properties, and strong sealing capabilities. In addition, these packaging materials have high resistance to internal pressure, making them particularly useful in terms of applications. Furthermore, due to their high cellulose content, the majority of these packaging materials are bio-derived and easily recyclable.

[0008] Filing on April 8, 2022, after the priority date of this international patent application, and published on October 11, 2023, Patent EP4257020 discloses a refill for packaging and a method for manufacturing the same. More specifically, the patent discloses a packaging comprising a tubular body-shaped refill and a reusable cap that imparts functionality to the packaging, wherein the refill forms the body of the packaging and is provided with connecting means that cooperate with the connecting means of the cap to ensure the closure and sealing of the packaging when the refill and cap are assembled, with minimal connecting means on the refill side and complex connecting means on the cap side. This prior art invention belongs to the field of packaging, particularly to the field of reusable tubes or bottles consisting of a refill containing contents and an opening / closing system and / or a measuring system. In the context of this prior art invention, the reusable part also serves as the functional part of the packaging (opening / closing, measuring, etc.). Therefore, all functions that add value to the user are concentrated in the reusable part. In the context of this prior art invention, the refill and the reusable part are provided with connecting means that allow the refill to be easily assembled to the reusable part.

[0009] Publication EP 1 884 348 discloses a manufacturing process for packaging by a combination of welding and bonding, and packaging manufactured thereby. Specifically, the publication discloses packaging formed from a multilayer thermoplastic film with butt-jointed edges, comprising a first weldable layer, a second partially or non-butt-weldable layer, and at least one thin strip covering the edges of the film and directly fixed to one surface of the second layer. The melting point difference between the first layer and the other layers of the laminate is greater than 20°C. Furthermore, the publication discloses a method for manufacturing packaging by butt welding by heating and cooling the edges of a multilayer film together, and then fixing a strip to the second layer so as to cover the edges.

[0010] Publication BE 419299 discloses a paper tube having an internal film coating made of an elastic, chemical-resistant material such as rubber (preferably natural latex, diluted, concentrated, preserved, or vulcanized), wherein the filling coating seamlessly covers the inner surface of the tube, providing a continuous inner surface that is chemically and mechanically resistant to its contents, and a process for manufacturing the tube. A paper roll bonded with latex or a similar substance is cut to a desired length according to the length of the tube, one end is folded back (for example, on a mandrel), and an inner washer and an outer washer are added to the folded edge, with the washer covering the outside of the finished tube being made of metal. This process is advantageously carried out by first placing the inner washer on the mandrel, then fitting the paper roll onto the washer, then placing the metal outer washer, and assembling the edges to both washers using an adhesive (preferably latex) while applying pressure and heat. A composite material (such as bakelite) or a metal barrel (which supports the threaded end of the closing cap) is introduced into the prepared pipe, and positioned so that the threaded end protrudes outward.

[0011] Publication FR 1084646 discloses a collapsible tubular container usable for the storage of various substances, wherein the side walls or outer covering are made of a paper tube, the paper tube having a fold or rim inward at the edge corresponding to the joint line with the tube head, the rim being interposed between a peripheral zone connected to the edge of a disc forming the head and an additional ring or crown having an outer diameter corresponding to the diameter of the disc, the elements being integrally compressed by surrounding the rim, and both elements being able to adhere to each other and to the edge, the disc forming the tube head and the independent ring or crown abutting it are made of plastic, the paper constituting the tube is pre-treated to be heat-weldable, and as a result a rigid bond is obtained between the plastic disc forming the head, the plastic ring, and the edge of the tube.

[0012] However, this type of packaging has been observed to have poor resistance to vertical loads (so-called "top loads"). This low resistance is particularly due to the low cohesiveness of the cellulose layer in the cylindrical body of the packaging. This weakness limits the stacking of the packaging and complicates industrial logistics, transportation, and distribution. In fact, for example, when heavy pressure is applied, such as when the packaging is stacked, there is a risk of delamination of the low-cohesive layer forming the tubular body of the packaging.

[0013] The object of the present invention is, in particular, to overcome the aforementioned drawbacks and improve the resistance, especially to delamination, of cylindrical packaging bodies manufactured by assembly using low-cohesive materials such as cellulose as the main material.

[0014] Summary and Principle of the Invention

[0015] One objective of the present invention is to improve known methods, machines, and products.

[0016] Another object of the present invention is to improve packaging materials made of low-cohesive materials such as cellulose-based sheets, and to improve the processes and machinery for their production.

[0017] Another object of the present invention is to solve the problem of resistance to vertical loads found in prior art tubes and packaging comprising components made of low-cohesive materials, such as cellulose-based sheets or molded members.

[0018] The present invention relates to a packaging body based on a low-cohesive material such as cellulose, and comprises a plurality of assembled components, including at least a tubular body and components fixed to the ends of the tubular body, wherein the fixed components are, for example, a bottom on which the packaging body is placed or a top with an opening and closing system for the packaging body. In the context of this application, these fixed components (e.g., the bottom and / or top) are generally referred to as “components”.

[0019] In the context of the present invention, the tubular body is, for example, cellulose-based, and may be single-layer or multi-layered, and the whole or majority of the tubular body is made of a low-cohesive material (such as cellulose), forming the so-called "structural" layer of the packaging. In addition, the tubular body may include a "functional" layer (or more thereof) that imparts specific properties and functions to the packaging. The functional layer may be single-layer or multi-layered. The descriptions of such structural and functional layers (both single-layer or multi-layered) and the materials of the components, as described later in this application, also apply to tubular bodies that may include the same or similar layers. Tubular bodies having such structural / functional components (layers) are disclosed, for example, in publications WO2022053879, WO2022009016, and WO2022185176, see these publications.

[0020] More specifically, the present invention relates to an assembly zone between the tubular body of a packaging and its components (i.e., components attached to the ends of the tubular body). This invention is defined in particular by the features of the claims of this application.

[0021] According to the present invention, the assembly of the tubular body and the components is not particularly limited, but includes a configuration in which the end of the tubular body is enclosed between a first element and a second element of the components, wherein the first element and the second element are fixed to the inner surface and outer surface of the tubular body, respectively.

[0022] Measurements and tests revealed that the synergistic effect of the first and second elements improves the resistance of the packaging, particularly ensuring high burst strength and high resistance to vertical loads. This improvement in packaging resistance is achieved even though the material forming the tubular body (e.g., paper, cardboard) is low-cohesive, and in some embodiments, the components or their parts are also low-cohesive materials.

[0023] In embodiments, the present invention relates to a packaging such as a tube, bottle, or can, comprising a tubular body having at least a first end, and a component made together with the tubular body from an essentially low-cohesive material (for example, consisting of an essentially low-cohesive material), wherein the component comprises at least a first element and a second element, the first and second elements being made from an essentially low-cohesive material (for example, consisting of an essentially low-cohesive material), and the component is assembled to at least one of the ends of the tubular body by fixing the first element to one surface of the tubular body (for example, an inner surface) and the second element to the other surface of the tubular body (for example, an outer surface).

[0024] In embodiments, the present invention relates to a packaging such as a tube, bottle, or can, comprising a tubular body having at least a first end, and a component, the tubular body comprising an inherently low-cohesive material (for example, made from an inherently low-cohesive material), the component comprising at least a first element, a second element, and an intermediate element, the component being assembled to at least one of the ends of the tubular body by fixing the first element to one surface of the tubular body (for example, an inner surface) and the second element to the other surface of the tubular body (for example, an outer surface), the intermediate element comprising an inherently low-cohesive material (for example, made from an inherently low-cohesive material), the intermediate element being confined between the first element and the second element, and further / or fixed to the first element and / or the second element.

[0025] In some embodiments, the tubular body may be single-layered or multi-layered.

[0026] In an embodiment, the first element may be single-layer or multi-layer.

[0027] In an embodiment, the second element may be single-layer or multi-layer.

[0028] In an embodiment, the multi-layer body and / or the first element and / or the second element may include functional layers.

[0029] In an embodiment, the first element and the second element may be fixed to each other.

[0030] In an embodiment, the intermediate element may be single-layer or multi-layer.

[0031] In an embodiment, the low-cohesion material may be cellulose or may include cellulose.

[0032] In an embodiment, the multi-layer body and / or the element may include, as functional layers, one or more layers of a very thin metallization layer and / or one or more layers of a polyethylene layer and / or one or more layers of an EVOH layer and / or one or more layers of an adhesive layer and / or one or more layers of a varnish.

[0033] In an embodiment, the component may be fixed to the tubular body by welding or adhesion.

[0034] In an embodiment, the package has a first end and a second end.

[0035] In an embodiment, the component may be a tube head having a bottom and / or an extraction orifice.

[0036] In an embodiment, the package may be a tube, a bottle, a can, or a tubular box. [[ID=了41]]

[0037] In embodiments of the present invention, the first element has a thickness of (for example) more than 100 μm and contributes particularly to the rigidity of the components, the durability of the assembly (e.g., yield strength, sealing properties, barrier properties), and the robustness of the components. For this reason, the first element can form a so-called "structural" layer of the product. This layer may be a single layer or a multi-layer layer.

[0038] In embodiments, this layer may include or be combined with at least one “functional” layer capable of imparting additional properties (e.g., airtightness or barrier properties) to the packaging, as described herein.

[0039] In embodiments of the present invention, the first element is formed from a thin layer (single or multilayer), for example, with a thickness of less than 100 μm, and contributes to the performance of the assembly (yield strength, sealing, barrier properties) while its contribution to rigidity is small (unlike the structural layer described above). Preferably, the thin layer has a multilayer structure and comprises at least a layer with high tensile strength and at least one layer having properties capable of protecting the contents inside the packaging (content contact compatibility, barrier properties against moisture, odor, oxygen, etc.), forming a functional layer as defined herein. The thin layer may be, for example, multilayer paper (paper / PE, or PE / paper / PE, sealing varnish / paper / metal or metallized paper, or paper / PE / EVOH / PE). Therefore, it is possible to achieve both low cohesiveness in the thickness direction (paper) and barrier properties (e.g., moisture barrier by PE, odor and oxygen barrier by the metallized layer).

[0040] In embodiments of the present invention, the second element has a thickness of (for example) more than 100 μm and contributes particularly to the rigidity of the components, the durability of the assembly (e.g., yield strength, sealing properties, barrier properties), and the robustness of the components. For this reason, the second element can form a so-called "structural" layer of the product. This layer may be a single layer or a multi-layer layer.

[0041] In embodiments, this layer may include or be combined with at least one “functional” layer capable of imparting additional properties (e.g., airtightness or barrier properties) to the packaging.

[0042] In the embodiment, the second element is formed from a thin layer (single or multilayer), for example, with a thickness of less than 100 μm, and contributes to the performance of the assembly (e.g., yield strength, sealing ability, barrier properties). The thin layer may be, for example, the multilayer paper described above. Therefore, it is possible to achieve both low cohesiveness within the layer (paper) and barrier properties (e.g., moisture barrier by PE, aroma and oxygen barrier by the metallized layer).

[0043] The above embodiments may be combined with each other, for example, the first element may be a structural layer and the second element a thin layer, or the first element may be a thin layer and the second element a structural layer, or both the first and second elements may be thin layers, or both may be structural layers, etc. In all embodiments, the first element and the second element may be single-layer or multi-layer.

[0044] In embodiments, the thin layers of the first and / or second elements may be, or include, a so-called “functional” layer that provides, for example, a barrier layer function. Such a functional layer is useful, for example, for isolating the structural layer from the surrounding environment and blocking the influence of the contents inside the packaging (typically liquid or semi-liquid) and the external environment in which the packaging is placed (e.g., a humid environment).

[0045] In the embodiment, the first element includes at least a structural layer and a functional layer.

[0046] In the embodiment, the second element includes at least a structural layer and a functional layer.

[0047] In this embodiment, the first element and the second element are two separate components.

[0048] In embodiments of the present invention, when both the first and second elements are formed from thin layers, an intermediate element is preferably added, for example, with a thickness of more than 100 μm, which contributes to improving the robustness of the component, and which may be enclosed between the first and second elements, or further / or fixed to the first and / or second elements.

[0049] In embodiments of the present invention, the intermediate element includes at least a low-cohesive material such as cellulose or a cellulose-based material.

[0050] According to embodiments of the present invention, the tubular body, first element, second element, and intermediate element may include multiple layers, providing functional properties, moisture or oxygen barrier properties to the inner surface of the packaging, and facilitating the assembly of the components. Advantageously, a low-cohesive material (e.g., cellulose or cellulose-based material) constitutes the majority of the packaging, and the packaging is essentially formed from the low-cohesive material, enabling recycling in the art. Advantageously, the low-cohesive material constitutes at least 85%, preferably at least 95%, of the packaging.

[0051] According to embodiments of the present invention, the components connected to the tubular body include at least a first element and a second element. Additional components, such as the intermediate elements described herein, may also be included to enhance the rigidity and functionality of the components. The components may be, for example, the bottom of the packaging or an end with an opening / closing mechanism. The components may also include, for example, an orifice such as a neck. Of course, other configurations are possible within the scope of the present invention. [Brief explanation of the drawing]

[0052] [Figure 1] Figure 1 shows cross-sectional views of packaging according to various embodiments of the present invention. [Figure 2] Figure 2 shows cross-sectional views of packaging according to various embodiments of the present invention. [Figure 3] Figure 3 shows cross-sectional views of packaging according to various embodiments of the present invention. [Figure 4] Figure 4 shows cross-sectional views of packaging according to various embodiments of the present invention. [Figure 5] Figure 5 shows cross-sectional views of packaging according to various embodiments of the present invention. [Figure 6] Figure 6 shows cross-sectional views of packaging according to various embodiments of the present invention. [Figure 7] Figure 7 shows cross-sectional views of packaging according to various embodiments of the present invention. [Figure 8] Figure 8 shows cross-sectional views of packaging according to various embodiments of the present invention. [Figure 9] Figure 9 shows an example of a packaging body according to an embodiment of the present invention. [Figure 10] Figure 10 shows an example of a packaging body according to an embodiment of the present invention. [Figure 11] Figure 11 shows an example of a packaging body according to an embodiment of the present invention. [Figure 12] Figure 12 shows an example of a packaging body according to an embodiment of the present invention.

[0053] Detailed description of the invention

[0054] In the description of this invention and in this application, the term "plastic base" is used to describe single-layer or multilayer structures that primarily consist of plastic materials such as thermoplastic resins used in the packaging field. These resins are, for example, virgin or recycled polyethylene. Multilayer structures may include small amounts of functional layers to ensure recyclability. These functional layers are, for example, EVOH layers or adhesive layers.

[0055] In the description of this invention and in this application, the term "cellulose-based" is used primarily to refer to monolayer or multilayer structures containing or incorporating cellulose. These structures may be in sheet form, laminate form, or even three-dimensional form. Low proportions of functional materials and / or functional layers may also be used to impart desired properties to the packaging, such as impermeability, food compatibility, and moisture and / or oxygen barrier properties. These functional layers may be, for example, very thin metallized layers, polyethylene layers, EVOH layers, adhesive layers, or varnishes, and may be added to the cellulose-based layer alone or in combination.

[0056] In the description of the present invention and in this application, the terms "low-cohesive material" or "low-cohesive material" are used to refer to the material present in at least the tubular body 2. This expression describes the behavior of a material that is prone to delamination from the end 3 of the tubular body 2 when the packaging is subjected to stress by internal or external pressure. Therefore, in this type of material, rupture of the packaging occurs as delamination from the end 3 of the tubular body 2 and propagates in the wall thickness direction of the tubular body. This is particularly true for cellulose-based structures such as paper-based laminates. Within the scope of the present invention, in some embodiments, the low-cohesive material is also used to form other packaging components such as the first element, second element, and intermediate element.

[0057] Figure 1 shows one embodiment of the present invention, in which a packaging component 1 comprises a tubular body 2 connected to a component 7 by welding or adhesive at its end 3, and the component 7 comprises a first element 4 fixed to the inner surface of the tubular body 2 and a second element 5 fixed to the outer surface of the tubular body 2.

[0058] Figure 1A shows an embodiment of the present invention comprising a functional layer 14 on a first element 4 and a functional layer 15 on a second element 5. This multilayer configuration is applicable to all embodiments of the present invention, as shown in the figures.

[0059] Figure 2 shows an embodiment of the present invention, in which the first element 4 is linked to the second element 5. Of course, the reverse configuration, in which the second element 5 is linked to the first element 4, is also possible.

[0060] Figure 3 shows another embodiment of the present invention, in which component 7 comprises an intermediate element 6 enclosed between the first element 4 and the second element 5.

[0061] Figure 4 shows another embodiment of the present invention, in which the intermediate component 6 is linked to the first element 4 and / or the second element 5.

[0062] Figure 5 shows an embodiment of the present invention, in which the first element 4 and the second element 5 are radially fixed to the inner surface and outer surface of the tubular body 2, respectively.

[0063] Figure 6 shows an embodiment of the present invention, in which the intermediate element 6 is enclosed between the first element 4 and the second element 5, and the first element 4 and the second element 5 are radially fixed to the inner surface and outer surface of the tubular body 2, respectively.

[0064] Figure 7 shows a modified example of the embodiment shown in Figure 4, in which the first element 4 and the second element 5 are radially welded to the tubular body 2.

[0065] In the embodiments shown in Figures 1 to 7, component 7 or 7' forms, for example, the bottom of the packaging 1.

[0066] Figure 8 shows an embodiment of the present invention in which component 7 comprises an orifice for extracting a product from within the packaging. In this embodiment, component 7 is, for example, a tube head.

[0067] Figure 9 shows an embodiment of the present invention, illustrating the form of a packaging tube for containing liquid or viscous products such as toothpaste, cosmetics or pharmaceuticals, food products, and even adhesives, paints or sealants.

[0068] Figure 10 shows an embodiment of the present invention in the form of a small bottle or bottle.

[0069] Figure 11 shows an embodiment of the present invention in the form of a can-type packaging containing, for example, a liquid product or a solid product.

[0070] Figure 12 shows an embodiment of the present invention in the form of a tubular box-type packaging containing, for example, powdered products, granular materials, biscuits, and other dried products.

[0071] The principle of the present invention, shown in Figure 1, relates to a packaging body comprising at least a tubular body 2 and a component 7 fixed to at least one end 3 of the tubular body, wherein the tubular body is based on a low-cohesive material such as cellulose. In the description of the present invention, component 7 and 7' refer to elements fixed to the end of the tubular body, such as the bottom or neck. In Figure 1, the component 7 forming the bottom of the packaging body comprises a first element 4 fixed to the inner surface of the end 3 of the tubular body 2 and a second element 5 fixed to the outer surface of the end 3. The first element 4 and the second element 5 are preferably fixed to the tubular body 2 by welding or adhesive. Of course, other equivalent fixing methods are also possible. The assembly 12 of the tubular body 2 and component 7 according to the present invention significantly improves the resistance of the packaging body, particularly its resistance to bursting due to internal pressure and its resistance to vertical loads (stacking during transport).

[0072] Assembly method 12 improves the strength of the packaging. Resistance to bursting and / or vertical load, as measured by tests and experiments, is improved by at least 1.5 times, advantageously 2 times, and preferably 5 times, compared to the same packaging in which component 7 consists only of the first element 4 or only of the second element 5.

[0073] Figure 1A shows an embodiment in which functional layers are placed / added to the first element 4 (layer 14) and the second element 5 (layer 15). Of course, this is an illustrative embodiment, and depending on the contained product and environment, only one of the functional layers (layer 14 or layer 15) may be used, that is, in some cases, it may be desirable to provide separation between the product contained in the packaging (e.g., liquid) and the first element 4, and / or between the environment (e.g., a humid environment) and the second element 5. Such functional layers are also applicable to other embodiments described and illustrated in this application and their equivalents. As described in this application, the functional layers 14, 15 may be single layers or multilayers and may be formed from the materials referred to in this application for functional layers and thin layers.

[0074] Figure 2 shows another embodiment of the present invention. In this embodiment, the component 7 that secures the closure of the end of the packaging comprises a first element 4 and a second element 5, which are integrated or attached to each other. The first element 4 is fixed to the inner surface of the end 3 of the tubular body 2. The second element 5 is fixed to the outer surface of the end 3 of the tubular body 2, and the second element 5 is also fixed to at least a portion of the first element 4. The first element 4 and the second element 5 are advantageously linked by, for example, welding or bonding.

[0075] According to assembly method 12, the packaging gains resistance to bursting and high vertical pressure despite the low cohesiveness of the tubular body 2.

[0076] According to the embodiment of the present invention shown in Figure 2, the first element 4 is produced, for example, by molding, injection molding, or compression molding.

[0077] According to another alternative embodiment, the first element 4 is fixed to the inner surface of the tubular body 2 during molding by a so-called overmolding operation. A preferred embodiment of the present invention is to perform the overmolding operation in a compression molding die.

[0078] Figure 3 shows another embodiment of the present invention, in which component 7 comprises a first element 4, a second element 5, and an intermediate element 6. The first element 4 is in the form of a thin film (e.g., the thin layer described above) and is fixed to the inner surface of the tubular body 2. The second element 5 is also in the form of a thin film (e.g., the thin layer described above) and is fixed to the outer surface of the tubular body 2. The thin layer may be a single layer or a multilayer, and may be the functional layer itself or comprise a functional layer. A thicker intermediate element 6 is wrapped between the first element and the second element. The intermediate element 6 provides rigidity to component 7 formed from the first element 4, the second element 5, and the intermediate element 6. Preferably, the intermediate element 6 is made from an essentially (or completely) low-cohesive material.

[0079] The assembly of the embodiment shown in Figure 3 has resistance to bursting and high vertical pressure despite the low cohesiveness of the tubular body 2.

[0080] Another advantage of the assembly shown in Figure 3 is that the assembly 12 can be performed without using tools that pass through the inside of the tubular body 2. Therefore, the assembly shown in Figure 3 is particularly advantageous for closing the package after filling.

[0081] According to the embodiment of the present invention shown in Figure 3, the intermediate element 6 is preferably not fixed to the first element 4 and the second element 5.

[0082] Figure 4 shows an alternative embodiment of the assembly shown in Figure 3, in which the intermediate element 6 is at least partially fixed to the first element 4 and / or the second element 5.

[0083] Figure 5 shows another embodiment of the present invention, in which component 7 comprises a first element 4 and a second element 5 in the form of a thin film made of a low-cohesive material, the first element 4 and the second element 5 being linked to each other. According to this embodiment, the end 3 of the tubular body 2 is not bent in the axial direction of the tubular body 2. Therefore, the first element 4 and the second element 5 are radially fixed to the inner and outer surfaces of the tubular body 2. The thin film may be a single layer or a multilayer, and may include a functional layer.

[0084] Figure 6 shows an embodiment of the present invention, in which the first element 4 and the second element 5 are radially welded to the end 3 of the tubular body 2. Advantageously, an intermediate element 6, essentially (or entirely) made of a low-cohesive material, is inserted between the first element 4 and the second element 5. The first element 4 and the second element 5 may be single-layer or multi-layer.

[0085] Figure 7 shows an embodiment of the present invention similar to that shown in Figure 4, except that the end portion 3 of the tubular body is not bent in the axial direction of the tubular body 2.

[0086] The embodiments of the present invention shown in Figures 3, 4, and 7 are particularly advantageous for closing the package after filling. These embodiments allow the component 7 to be fixed to the end of the tubular body 2 without using a tool that passes inside the tubular body 2.

[0087] Figure 8 shows another embodiment of the present invention, in which component 7 has an orifice 16 for extracting the product contained within the packaging. Thus, the inventions shown in Figures 1 to 8 can be used for various types of components, such as bottoms, tube shoulders, bottle necks, and even components integrating opening and closing systems. For example, to construct a packaging body, components 7, 7' according to any embodiment of Figures 1 to 7 can be fixed to one end of a tubular body as the bottom 7' of the packaging body, and component 7 (tube head, etc.) according to the embodiment of Figure 8 can be fixed to the other end. In this embodiment of Figure 8, the first element 4 and the second element 5 are based on the low-cohesive material disclosed herein.

[0088] According to embodiments of the present invention, the first element 4 and / or the second element 5 and / or the intermediate element 6 may be plastic-based, and the plastic is preferably recycled plastic.

[0089] According to embodiments of the present invention, the first element 4 and / or the second element 5 and / or the intermediate element 6 are based on or essentially made from a low-cohesive material such as cellulose.

[0090] According to a preferred embodiment of the present invention, the intermediate element 6 is cellulose-based.

[0091] According to another preferred embodiment of the present invention, the first element 4 and / or the second element 5 are cellulose-based.

[0092] According to embodiments of the present invention, the first element 4 and the second element 5 are cellulose-based in sheet or laminate form.

[0093] According to another embodiment of the present invention, the first element 4 and the second element 5 are molded cellulose bases.

[0094] According to the embodiment, the materials can be combined, for example, element 4 can be plastic-based and element 5 can be low-cohesive material-based, or vice versa.

[0095] Preferably, when one (or both) of the elements is based on a low-cohesive material, the functional layer described in this application is added depending on the product contained in the packaging and the environment in which the packaging is positioned. This embodiment is shown in Figure 1A as a non-limiting example. Advantageously, the functional layer is positioned on the first element 4 (layer 14) located inside the packaging and / or on the second element 5 (layer 15) located outside the packaging. This principle is applicable to all embodiments described and illustrated in this application.

[0096] According to a preferred embodiment of the present invention, the cylindrical body 2 and components 7,7' are cellulose-based, with a cellulose content of more than 70%, preferably more than 85%, and more preferably more than 90%.

[0097] According to embodiments of the present invention, the first element 4 is plastic-based, and the second element 5 is a low-cohesive material base such as cellulose.

[0098] According to embodiments of the present invention, the intermediate element 6 is cellulose-based, and the first element 4 and the second element 5 are plastic resin-based.

[0099] According to embodiments of the present invention, the intermediate element 6 and the second element 5 are cellulose-based, and the first element 4 is plastic-based.

[0100] According to embodiments of the present invention, the first element 4, the second element 5, and the intermediate element 6 are cellulose-based.

[0101] Other material combinations are also possible within the scope of this application.

[0102] Figures 9, 10, 11, and 12 represent, respectively, a flexible tube 8 for containing a paste-like product, a bottle 9 containing cosmetics such as creams and shampoos, a can-shaped packaging 10 for liquid or solid food products, and finally, a resealable cylindrical box-shaped packaging 11 with a lid 2' for food or cosmetics. In the embodiment, the packaging comprises a first end 3 and a second end 3, to which the components 7, 7' described herein are assembled (see, for example, Figures 10, 11, and 12).

[0103] Embodiments have been described to provide a general understanding of the structure, function, manufacturing and use principles of the systems and methods described herein. Some of these embodiments are illustrated in the accompanying drawings and described above. The systems and methods specifically described herein and illustrated in the accompanying drawings are non-limiting embodiments, and the scope of the invention is not limited solely by the claims. Features illustrated or described in relation to one embodiment can be combined with features of other embodiments. Such modifications and variations are intended to be included within the scope of the invention. Numerous problems relating to prior art methods and systems have been pointed out herein, and the methods and systems described herein can solve one or more of these problems. Furthermore, although the invention has been described in relation to numerous embodiments, alternatives, modifications, equivalents and variations that fall within the spirit and scope of the invention are also included in this application. [Explanation of Symbols]

[0104] 1: Packaging components, 2: Tubular body, 2': Lid, 3: End of the tubular body, 4: The first element (single layer or multi-layer), 5: Second element (single layer or multi-layer), 6: Intermediate elements (single layer or multi-layer), 7,7': Components, 8:Flexible tube, 9: Bottle, 10: Cans, 11: Tubular box, 12: Assembly area, 14: Functional layer (single layer or multi-layer), 15: Functional layer (single layer or multi-layer), 16: Extraction orifice.

Claims

1. A packaging body such as a tube, bottle, or can, comprising a tubular body (2) having at least a first end (3), wherein the body is essentially made of a low-cohesive material, and further comprising components (7, 7'), The aforementioned component (7, 7') includes at least a first element (4) and a second element (5), wherein the first and second elements are made of essentially low-cohesive material. A packaging body wherein the components (7, 7') are assembled to the end (3) of the tubular body (2) by fixing the first element (4) to the inner surface of the tubular body (2) and the second elements (4, 5) to the outer surface of the tubular body (2).

2. The packaging according to claim 1, wherein the components (7, 7') include an intermediate element (6), the intermediate element (6) is made of an essentially low-cohesive material, and the intermediate element (6) is confined between a first element (4) and a second element (5), and / or fixed to the first element (4) and / or the second element (5).

3. The packaging body according to claim 1 or 2, wherein the tubular body (2) is single-layered or multi-layered.

4. The packaging according to any one of claims 1 to 3, wherein the first element (4) is single-layer or multi-layer.

5. The packaging according to any one of claims to 4, wherein the second element (5) is single-layer or multi-layer.

6. The packaging according to any one of claims 1 to 5, wherein the multilayer body (3) and / or the elements (4, 5) include functional layers (14, 15).

7. The packaging according to any one of claims 1 to 6, wherein the first element (4) and the second elements (4, 5) are fixed to each other.

8. The packaging according to any one of claims 1 to 7, wherein the intermediate element (6) is single-layer or multi-layer.

9. The packaging according to any one of claims 1 to 8, wherein the low-cohesive material includes cellulose.

10. The packaging according to any one of claims 1 to 9, wherein the multilayer body (2) and / or the elements (4, 5) include a functional layer, the functional layer including at least one very thin metallized layer and / or at least one polyethylene layer and / or an EVOH layer and / or at least one adhesive layer and / or a varnish layer.

11. The packaging body according to any one of claims 1 to 10, wherein the components (7, 7') are fixed to the tubular body (2) by welding or adhesive.

12. The packaging according to any one of claims 1 to 11, wherein the component (7, 7') is a tube head having a bottom and / or extraction orifice (16).

13. The packaging according to any one of claims 1 to 12, wherein the packaging is a tube (8), a bottle (9), a can (10), or a tubular box (11).

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