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WO2017158209A1 - Tubular container with an outer tube and an inner container - Google Patents

Tubular container with an outer tube and an inner container

Info

Publication number
WO2017158209A1
WO2017158209A1 PCT/ES2016/070252 ES2016070252W WO2017158209A1 WO 2017158209 A1 WO2017158209 A1 WO 2017158209A1 ES 2016070252 W ES2016070252 W ES 2016070252W WO 2017158209 A1 WO2017158209 A1 WO 2017158209A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
container
tube
outer
inner
skirt
Prior art date
Application number
PCT/ES2016/070252
Other languages
Spanish (es)
French (fr)
Inventor
De Mendiola Quintana Javier Fernandez
Landa Juan Ignacio Valpuesta
Original Assignee
Ctl-Th Packaging, S.L. Unipersonal
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D35/00Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/14Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with linings or inserts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D35/00Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/24Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with auxiliary devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2205/00Venting means

Abstract

The invention relates to a tubular container (1) made from flexible material, comprising an outer tube (10) and an inner container (30) housed inside the outer tube (10) and intended to come into contact with the product (51) in the container. A flexible shoulder (32) of the inner container (30) is secured to a head (12) of the outer tube (10), with an intermediate cavity (7) being formed between the outer tube (10) and the inner container (30). At least one hole (24) connects the intermediate cavity (7) with the exterior of the tubular container (1). The head (12) can include an airless or one-way valve. The outer tube (10) can recover its shape while the inner container (30) remains compressed during the use of the tubular container (1). The outer tube (10) and the inner container (30) are preferably made from materials that meet different requirements. The distal end (36) of the inner container (30) is preferably flared against the outer tube (10).

Description

TUBULAR CONTAINER WITH an outer tube and a container

INSIDE

DESCRIPTION

TECHNICAL FIELD

The invention relates to a tubular flexible container for receiving a cosmetic, food, medicine or similar material, particularly a tubular package including an outer tube and an inner container housed within the outer tube.

State of the art

In the fields of cosmetics, pharmaceuticals or food is widespread use of plastic hoses. Plastic hoses are characterized by comprising a body or hollow skirt, intended to contain a product (e.g., a cosmetic cream), and a head disposed at one end of the skirt and intended to permit the evacuation or product dosage. The head may be provided with a product outlet neck, a stopper, metering mechanisms, etc. Once the tube is filled with a product, the end of the skirt opposite the head is sealed by welding heat transfer, generally hot air, hot gag, ultrasound, etc.

Such hoses plastics obtained from various manufacturing methods such as extrusion, coextrusion, injection mold, etc. Also known are various methods to provide flexible plastic tubing or any decorative element information, by including text, graphics, drawings, etc. either directly thereon or by incorporating another element, such as a label. For example, flexible plastic tubes can be decorated by techniques such as offset, flexography, screen printing, stamping (in English, "stamping"), self-adhesive labels, etc. Also, in processes for manufacturing tubes by injection molding, the technique known as In Mold Labeling or English, Ίη-Mold Labeling "(IML), to provide tubes label is very common. Despite its extensive market deployment, the manufacture of flexible plastic tubes presents certain problems still unresolved.

For example, a first problem is the difficulty of selecting the materials of manufacture of the tube, particularly in injection molding processes. The materials used have to present very special features and meet requirements such as to be processed, have an adequate weldability, impermeability, resistance to cracking when the material is under stress (ESCR), etc. In the field of food, materials must also meet strict requirements related to safety in food contact, since the tubes on the market have to be in direct contact with the packaged product therein. In the field of cosmetics, food and pharmacology, materials must meet specific eligibility requirements and suitability, such as non-toxicity, global and specific migrations, etc., since the tubes have to be in direct contact often with products ingestible or applicable in the body. Typically, these features and that requirements are achieved by the selection and use of polymer blends and other components, especially in the case of tubes made by injection molding. However, obtaining polymer mixtures that meet such a variety of requirements including mechanical requirements, food contact, non-toxicity, processability, etc. It is extremely complex and costly. To this must be added that when polymer mixtures are used, it is difficult to maintain and ensure the properties of the mixture due to tolerance in fundamentals (flow, density, stiffness, etc.) of the polymers included in the mixture. Therefore, it is extremely complex to obtain a polymer blend having balanced all necessary to successfully make and use a tube properties, particularly an injected tube. Moreover, the obligation to obtain polymeric mixtures meeting strict requirements for food contact or no toxicity directly prevents a large number of polymers in the preparation of the mixtures can be used. This complicates further the design of the polymer blends.

A second problem has to do with a type known in the prior art actually formed by two pipe pipes, one inside the other. The solution of providing a tube within a usually used for a package "airless", ie a container that prevents the entry of air into the container in order to improve conservation of the packaged product (for example products such as creams without additives, serums, vitamin C, etc.). This solution is also commonly used to resolve the effect of collapsing during use. In this type of tubular containers, both the inner tube and the outer tube they are provided with a skirt and a neck provided with an outlet head. The inner and outer tubes are connected by their necks output. This solution has shortcomings when obtaining a high recovery rate (ability to deliver the entire contents of the tube) as the tube can not completely collapse due to the high rigidity of the head of the inner tube.

A third problem has to do with sealing phials double tube as mentioned in the previous paragraph or as bi-product containers (phials formed by an inner tube and an outer tube and containing two different products, where the outer tube having a head special configuration with two outlet holes of the two products, so that the two products go abroad together and are mixed together at the exact time of application). For assembling containers previously mentioned double tube it requires the skirt of the inner tube and the outer tube skirt present a substantial difference in diameter, to perform an effective assembly of the inner tube within the outer tube. This causes, when the end of the foot flattens for sealed assembly, not an intimate bond between the skirts of the two pipes, internal and external to occur, causing failure in the seal. Specifically, in the central area it has four sealing wall thickness, while on the sides there are only two. By compressing the jaws make the walls welded pressure is correct in the four walls but insufficient in the two, resulting in a bad soldier in the area. This clearance also difficult to introduce the welding nozzle, which must fit inside the tube with high accuracy.

The present invention aims to provide a new design of tubular container which solves at least one of the above problems.

Brief Description of the Invention

The object of the invention a tubular or flexible container for accommodating a cosmetic material, food, drug-like, and a method of manufacturing said tubular container of flexible material. The tubular container comprises an outer tube and an inner container. The outer tube comprises a skirt and a head, where the head usually includes, among others, a neck, a thread, etc. The inner container, in turn, is provided with a skirt and, in preferred embodiments of the invention, a shoulder at a proximal end of the skirt. The shoulder is an open top, ie, has a hole and therefore not fully close said proximal end of the skirt of the inner container. Said shoulder is flexible or deformable, preferably having a deformation type plastic. The inner container is housed within the outer tube and the shoulder of the inner container is preferably sealingly fastened within the head of the outer tube, so that the shoulder of the inner container can seal the inner container once sealed end proximal of the tubular container. The inner container therefore does not have a tube head itself typical conventional hoses (neck, threaded, etc.), but to be welded to the outer tube neck fail, thread, etc. the head of the outer tube to evacuate its contents. In other words the inner container shares or appropriates the use of head neck of the outer tube. Moreover, this shoulder preferably has a deformability without compromising the welding head to shoulder of the inner container. In addition, the shoulder is preferably made from a laminate complex (aluminum or other) equal or similar to the skirt of the inner container, with advantages in cost and capacity very high strain (being this deformation type plastic and thus avoiding the shape recovery and securing the permanent collapse of the internal container). Between the inner container and the outer tube a gap is delimited. Preferably, the tubular container is able to recover its original shape after proceeding to use, ie, after pressing the tubular container to extract the product contained therein. Instead, the inner container is preferably deformed by a non-way valve which prevents return air into the inner container; preferably, said non-return unidirectional valve is disposed in the head of the outer tube, a stopper fixed to the outer tube head or other part such as an applicator or a pump. Additionally, the distal end of the inner container is preferably deformed and widened (or flared) so that it is attached to the distal end of the outer tube. The outer tube and the inner container can be made of different materials, so that the inner container, intended to be in contact with the packaged product, satisfies related to that function requirements while the outer tube, which is visible from the outside, not there satisfies such requirements of the inner container and instead meet related function such as carrying one or more decorative elements, labels requirements, etc.

A first advantage offered by at least some embodiments of the invention and in particular those embodiments in which the materials of the outer tube and the inner container meet different requirements is that the selection of materials is provided. This solves one of the major problems of injected tubes and to some extent on the extrudates and other techniques for manufacturing tubes consisting of requiring the use of materials with high requirements and performance. For example, the possibility of using recycled materials, in particular for making the outer tube is opened, ensuring that these recycled materials not in contact with the packaged product and the tubular container therefore complies with current regulations related containers food industry, pharmacy or cosmetics.

An additional advantage offered by at least some embodiments of the invention, is that it is possible to reduce the thickness of the outer tube as compared for example with a traditional injection tube not covering this version double tube as in present invention the outer tube has a purely mechanical function and must not be in contact with the packaged product. This reduction in thickness would not be possible if the product was in contact with the outer packaging and permeability would be affected. By having smaller wall thickness would be more permeable container and therefore not adequately protect the product to be contained, can vary its characteristics to the permeate side of its components. The property necessary impermeability in the tubular container of the present invention, however, is provided by the inner container, which can be made of laminated materials (laminates complex) containing an aluminum foil or a barrier polymer or simply a structure monolayer but with the necessary impermeability, permeability being indifferent outer tube. Nor would it be possible a reduction in wall thickness in the case of tubes injected, since this decrease significantly affect the complexity to obtain good filling of the injection cavity. To overcome this circumstance is known in the world of plastic injection using more fluid polymers to produce an article thinner wall; however, this increased fluidity usually involves a change of critical properties, such as resistance ESCR. An additional advantage offered by at least some embodiments of the invention and in particular those in which the tubular container regains its outer shape after use, is that the tubular container provides improved ergonomics of use. This is because to extract product will always perform a pressure on an expanded tubular container, as if completely full, resulting in a more comfortable operation for the user's hand. Another advantage of these embodiments is that the tubular container can maintain an unchanging appearance, ie, may remain as new despite being used repeatedly and therefore can maintain optimum appearance throughout its useful life. This is so even in those embodiments in which the tubular container is "airless", since the inner container is deformed who remains while the outer tube recovers its original shape.

An additional advantage offered by at least some embodiments of the invention and in particular those in which a shoulder of the inner container is internally fixed to the head of the outer tube, is that a more effective and resistant fixing is achieved between both tubes compared to conventional solutions double tube wherein both tubes have a head and in which the two heads of the tubes are assembled together. Furthermore, such embodiments also improve the recovery rate compared to conventional solutions such bi-tube in which the fixing of the two tubes by their respective heads is performed. This increased rate of return is achieved since the existing solutions so far did not allow complete or near complete collapsing of the head of the inner container, even if it is fabricase with smaller thickness than the head of the outer tube. However, in the tubular container of the present invention, the shoulder of the inner container is flexible, preferably being made of a laminate, plastic or metalloplastic complex, and is welded on the inside of the head of the outer tube, allowing its collapsed as result of shoulder flexibility.

Another advantage offered by at least some embodiments of the invention and in particular those in which the distal end of the inner container is enlarged and attached to the distal end of the outer tube, is that it significantly improves sealing the distal end of tubular container.

Brief Description of the Figures

The details of the invention are appreciated in the accompanying figures do not intend to limit the scope of the invention: - Figure 1 shows a sectional elevation of an outer tube of a tubular container according to an embodiment of the invention, the outer tube comprising a skirt, a head and two-way valves.

- Figure 2 shows a sectional elevation of a skirt and a shoulder separately manufactured to form an inner container of a tubular container according to an embodiment of the invention.

- Figure 3 shows a sectional elevation of the skirt and the shoulder of the previous figure, joined together to form the inner container.

- Figure 4 shows a sectional elevation of the inner container being introduced into an inner space of the outer tube.

- Figure 5 shows a sectional elevation of the inner container fully inserted into the interior of the outer tube.

- Figure 6 shows a sectional elevation of the distal end of the skirts of the outer and inner tubes in the situation of Figure 5.

- Figure 7 shows a sectional elevation of a conical part being introduced by the distal end of the outer and inner tubes.

- Figure 8 shows a sectional elevation of the distal end of the skirts of the outer and inner tubes after removing the nosepiece of Figure 7.

- Figure 9 shows a sectional elevation of a tubular container formed by the outer tube and the inner container.

- Figure 10 shows an enlarged view of the head of the outer tube and the shoulder of the inner container, in particular a unidirectional valve disposed at the head of the outer tube in communication with an intermediate cavity between the two tubes.

- Figure 1 1 shows a sectional elevation of the seal in the distal end tubular container and containing a product therein.

- Figure 12 shows an exterior perspective view of the tubular container in the situation of Figure 1 January.

- Figure 13 shows a sectional elevation of the tubular container of Figure 1 1 in a situation in which two opposing forces being applied and compressing the container for extraction of product inside.

- Figure 14 shows a sectional elevation of the tubular container of Figure 1 1 in a subsequent situation in which ceased the application of torque, and the outer tube has recovered its undeformed shape while the inner container remains deformed.

DETAILED DESCRIPTION OF THE INVENTION

The invention relates to a tubular flexible container for accommodating a cosmetic material, food, drug or the like, and a method of manufacturing said tubular container of flexible material. Such tubular containers are often characterized by comprising a body or skirt hollow for containing a product (for example, a cosmetic cream), and a head disposed at one end of the skirt and intended to permit the evacuation or product dosage . The head may be provided with a product outlet neck, a stopper, metering mechanisms, etc. Manufacturers of such tubular containers generally provide tubular containers marketers of products (e.g., cosmetics) with closed head, stoppered, sealed and generally finished container, and the opposite end open skirt. Product marketers filled tubular containers with product through the open end of the skirt, and then sealed end of said skirt, being the tubular container and product contained therein ready for retail.

Figure 9 shows an embodiment of a tubular container (1) of flexible material according to the invention. The tubular container (1), like other known flexible tubular containers in the prior art, comprises a skirt (2) and a head (3). The skirt (2) is an elongated body, hollow cylindrical optionally, arranged around a central longitudinal axis (4) and having a proximal end (5) and a distal end (6). The head (3) is arranged at the proximal end (5) of the skirt (2) and provides a closure to said proximal end (5). The head (3) of the tubular container may include various elements, such as anchoring systems of other parts, partial shutters drilling, useful for coupling such closure caps of different forms, dosing heads, metering pumps, applicators, drip systems, backstops , etc. As shown in Figure 9, the tubular container (1) of the present invention is composed of an outer tube (10) and an inner container (30) housed within the outer tube (10).

The outer tube (10), which is shown alone in Figure 1 comprises a skirt (1 1) and a head (12). The skirt (1: 1) is an elongated body, hollow and optionally cylindrical, disposed about a longitudinal central axis (13) and having an interior space (14) and an inner diameter (d1), and further having a proximal end (15) and a distal end (16). The head (12), meanwhile, is disposed at the proximal end (15) of the skirt (1: 1) and is intended to close the outer tube (10) while allowing dispensing therethrough of a product housed inside the tubular container (1). In various embodiments of the invention, the head may have different designs or configurations depending on the application or utility of the tubular container (1). For example, the head may have a single outlet port and an external thread for engaging a screw cap. In other embodiments, the head may have a system coupled to the head end, such as a cap, a metering pump, or other. In the present embodiment, the head (12) comprises a shoulder (17), a platform (18) generally cylindrical disposed below the shoulder (17) and a neck (19) threaded disposed below the platform (18) and intended to receive a screw cap, a pump, an applicator or other part or mechanism (not shown). The neck (19) threaded ends in a transverse wall (20) provided with a hole (21). The head (12) delimits an interior space (22), which in this embodiment extends from the inside space (14) of the skirt (1: 1) to the orifice (21) of the transverse wall (20).

Optionally, in the hole (21) of the transverse wall (20) can have a one-way valve (23), of the type known way valves that allow the evacuation of product from inside the tube to the outside and prevent the product return and outside air into the tube. For example, the one-way valve (23) shown in the figure comprises a sphere (23a) makes close in a conical seat (23b); the sphere (23a) has axial freedom of movement, allowing the passage of product contained in the interior space (14, 22) when a pressure on outer tube (10) is exerted, and closing the passage of outside air into the interior space (14, 22) of the tube, when such pressure is removed and a depression occurs inside (as explained below with reference to Figures 13 and 14).

Also, in certain embodiments of the present invention, the outer tube (10) may include at least one hole (24) made in the skirt (1: 1) and / or head (12) of the outer tube (10) to provide an air passage between the outside of the outer tube (10) and the interior space (14, 22) of the outer tube (10). For example, a hole (24) in the platform (18) of the head (12) of the outer tube (10) communicating the interior space (14, 22) with the outer space is provided in this embodiment ( unnumbered). In certain embodiments, such as in this embodiment, it can have a unidirectional valve (25) housed in the hole (24), the function of the one-way valve (25) being to allow the entrance of air from the outside the outer tube (10) into the interior space (14, 22) through the hole (24) and prevent the passage of air from the interior space (14, 22) to the outside of the outer tube (10) through hole (24). For example, the one-way valve (25) of this embodiment, as shown in the enlarged view of Figure 10, is formed as a plug inserted into the hole (24) and provided with a shutter (26) conical Flexible whose distal end (lower end in the figure) opens when the air pressure outside the pipe is higher than the air pressure within the tube, and closes when the air pressure inside the tube is greater than the outside air pressure tube. As shown in Figure 9, the hole (24) and the one-way valve (25) of this embodiment are oriented axially, ie in the direction of the longitudinal central axis (13) and in an area of ​​the platform (18) adjacent the shoulder (17).

The outer tube (10) can be decorated by techniques such as offset, flexography, screen printing, stamping (in English, "stamping"), self-adhesive labels, or in mold labeling (IML).

As shown in Figure 3, the inner container (30), in turn, comprises a skirt (31) and a shoulder (32). The skirt (31) is an elongated body, hollow cylindrical optionally, disposed about a longitudinal central axis (33) and having an interior space (34). The skirt (31) of the inner container (30) further having a proximal end (35), a distal end (36) and an outer diameter (d2), said outer diameter (d2) preferably slightly smaller than the inner diameter (d1 ) of the skirt (1 1) of the outer tube (10). The shoulder (32) of the inner container (30) is arranged at the proximal end (35) of the skirt (31) and is formed by a wall closing partially said proximal end of the skirt (31) and terminating in a rim ( 38). The shoulder (32) is flexible and has an interior (39). In turn, the edge (38) defining an orifice (37) communicating the interior space (39) with the outside of the inner container (30). Preferably, as is the case of this embodiment, the wall forming the shoulder (32) is substantially frustoconical, and the edge (38) and the hole (37) are concentric and its center is arranged on the longitudinal central axis (33) of the inner container (30). In certain embodiments, the shoulder (32) may have a constant thickness. In other embodiments, as illustrated herein, the edge (38) has a greater than the rest of the shoulder (32) thickness. embodiments in which the shoulder (32) comprises at least one notch or area of ​​reduced thickness are also contemplated, not shown, for example in a ring disposed about the longitudinal central axis (33), whose function is detailed below .

As it mentioned above, the inner container (30) is disposed within the outer tube (10), ie in the inner space (14) of the skirt (1: 1) and part of the interior space (22) the head (12) of the outer tube (10). As shown in Figure 9, the shoulder (32) of the inner container (30) is in contact with the head (12) of the outer tube (10) around the perimeter shoulder (32), said sealing contact of so that between the shoulder (32) and the head (12) a seal (40) is defined. Preferably, said sealed connection (40) between the shoulder (32) and the head (12) is a weld. By tight connection (40), the fluid passage between the edge (38) of the shoulder (32) of the inner container (30) and the head (12) of the outer tube (10) is prevented; the fluid passage is further prevented throughout said sealed connection (40), which extends over 360 Q about the longitudinal central axis (4) of the tubular container (1).

As shown, the tight connection (40) also is arranged in a radially closer to the longitudinal central axis radially intermediate region of the head (12) of the outer tube (10) (4) the skirt (31) the inner container (30) and more specifically on an edge (27) of the platform (18) adjacent to the interior space (22). In certain embodiments, said edge (27) of the head (12) of the outer tube (10) may be provided with a seat or projecting towards the interior space (22), not shown, whose function is detailed below. Moreover, as discussed above, the outer diameter (d2) of the skirt (31) of the inner container (30) is slightly smaller than the inner diameter (d1) of the skirt (1: 1) of the outer tube (10), so that a clearance between the skirt (1: 1) of the outer tube is defined

(10) and skirt (31) of the inner container (30). This difference in diameter is such that it allows to perform the flaring of the inner container (30), as will be explained below with reference to Figures 7 and 8, the skirt (31) of the inner container (30) is capable of deformation enough to fit the inner diameter (d1) of the skirt

(1: 1) of the outer tube (10).

At the distal end (6) of the skirt (2) of the tubular container (1), in turn, the distal ends (16, 36) of the outer tube (10) and the inner container (30) are arranged. As shown in the enlarged view of Figure 8, the skirt (31) of the inner container (30) comprises a widened zone (41) at the distal end (36) of the skirt (31). A length (h2) of said widened area (41) abuts against and contacts the distal end (16) of the skirt (1: 1) of the outer tube (10), preferably around the perimeter of the skirt (January 1 ) of the outer tube (10) about the longitudinal central axis (4) of the tubular container (1).

In certain embodiments, the distal ends (16, 36) of the skirts (1: 1, 31) of the outer tube (10) and the inner container (30) are welded or adhesivadas each other in the contact area length (h2). The adhesivado Soldering or can cover the entire perimeter around the longitudinal central axis (4) or be intermittent. Also, welding or adhesivado may include all or part of the length (h2). The welding function or adhesivado is twofold. A first function is that the welding or adhesivado ensures that the distal ends (16, 36) of the skirts (1: 1, 31) of the outer tube (10) and the inner container (30) are in contact and detached to time to seal the distal end (6) of the tubular container (1) once said product container filled. It is to be noted that, since the tubular container (1) of Figure 9 is manufactured until it is filled with product and sealed at its distal end (6) may take some time and be subjected tubular package (1 ) to transport, storage, handling, etc. the tubular container (1), which could result in possible mechanical unwanted actions on the tubular send (1). Welding or adhesivado contribute to the contact length (h2) is maintained despite such possible mechanical actions as an intimate bond between the inner container (30) and outer tube (10) is achieved in sealing end of the distal end (6) of the tubular container (1). A second function of welding or adhesivado, in the particular case where said welding or adhering is full perimeter, is to ensure that the inner wall of the distal end (16) of the skirt (1: 1) of the outer tube (10) it is perfectly welded to the outer wall of the distal end (36) of the skirt (31) of the inner container (30). Thus, the marketer product, when performing the sealing of the distal end (6) of the tubular container (1) after the package with a product filling, should only worry of getting a good welding of the inner container (30), and the outer tube (10) is supplied fitted. This solution helps the tubular container (1), from the viewpoint of the marketer product to fill the container and sealing the distal end (6), to behave as if it were monolayer (single pipe), which facilitates considerably the sealing operation of the distal end (6) as the systems used normally introduce a nozzle with extremely narrow tolerances for the tube walls. Above said enlarged portion (41), as can be seen in Figure 8, the intermediate cavity is delimited (7) mentioned above. Therefore, as is clear from Figures 8 and 9, the intermediate cavity (7) is delimited by the head (12) of the outer tube (10), the shoulder (32) of the inner container (30) and skirts ( Jan. 1, 31) of the outer tube (10) and the inner container (30).

In certain embodiments, such as illustrated in the figures, the outer tube (10) and the inner container (30) are formed with dimensions such that the distal end (16) of the skirt (1: 1) the outer tube (10) projects a length (h1) from the distal end (36) of the skirt (31) of the inner container (30), as can be seen in Figure 8.

An example of method of manufacturing a tubular package is detailed according to the invention for manufacturing the above tubular container (1). Then, methods of use of the tubular container (1) by the marketer product and the end user, in order to explain advantageous effects of the invention will be detailed.

Figures 1 to 10 show a sequence of manufacturing the tubular container (1) according to an embodiment of the manufacturing method according to the invention.

In an initial step of the procedure, the detailed above outer tube (10) provided with skirt (1 1) and head (12), illustrated in Figure 1 is manufactured. The outer tube (10) may be manufactured in one or several phases by any conventional technique known in the field of manufacturing flexible tubular containers. For example, the outer tube (10) can be manufactured by an extrusion skirt (1: 1) and subsequent encapsulation of the head (12). In other embodiments, the outer tube (10) can be manufactured by injection molding of the skirt (1: 1) and subsequent over-molding mold of the head (12) on the skirt (1: 1). In another example, can be made full outer tube (10) by injecting mold joint skirt (1: 1) and the head (12). The outer tube (10) may be made of a formulation comprising one or more plastic materials such as polypropylene, polyethylene, copolymers, etc. Making the outer tube (10) may comprise same decoration by techniques such as offset, flexography, screen printing, stamping (in English, "stamping"), self-adhesive labels, or in mold labeling (IML).

In another initial step of the procedure which can be performed before, after or in parallel to the previous step, the inner container (30) having a skirt (31) and a shoulder (32) is manufactured. The skirt (31) and shoulder (32) can be made from plastic, metal or combinations of both. The skirt (31) and shoulder (32) can be fabricated together or alternatively separately and then joined together, as shown in Figures 2 and 3. More specifically, as an example, the skirt (31 ) can be obtained from a sheet of plastic material (eg. ex. polyethylene), from a sheet of a metalloplastic complex (p. eg. an aluminum layer with an outer coating or an inner layer of polyethylene or polypropylene also using adhesives required to enable the connection between the layers), from a sheet of plastic complex (p. eg. an EVOH layer with an outer coating and / or an inner layer of polyethylene or polypropylene also using adhesives necessary) or by other techniques such as transformation of plastic extrusion or injection. In the case of a sheet used, the sheet is deformed or flexes to the tubular shape, for example cylindrical. Then, welded or sealed opposite longitudinal edges of the sheet to obtain a tubular sleeve. The soldier is performed by generating heat in the Soldering. Heat causes the polymers present in the opposite longitudinal edges, melt and stick together. This is a system known manufacturing and used in the manufacture of laminate tubes intended to contain for example toothpastes. Heat generation can be performed by a conventional system of resistors, or by a magnetic field high frequency (in the case of splitting a sheet metallo), among others. Finally, the skirt (31) is obtained by cutting a predetermined length of the tubular sleeve. In turn, the shoulder (32) of the inner container (30) can be manufactured, continuing with the example, from a sheet of plastic material (eg. Ex. Polyethylene), from a metalloplastic complex (p. Eg . an aluminum layer with an outer coating and / or an inner layer of polyethylene or polypropylene also using adhesives required to enable the connection between the layers), or from a sheet of plastic complex (p. eg. a layer of EVOH having an outer and / or inner coating layer of polyethylene or polypropylene also using adhesives required). portions of the sheet are cut and provides each portion of a hole. Then, the portions are placed in a mold and a pressure or printing is applied, giving the portions a form of frustoconical dimensional shoulder as illustrated in the figures, where the hole of each portion constituting the opening (37) of the shoulder ( 32). Although shown shoulder (32) frustoconical alternative embodiments in which the shape of the shoulder (32) may vary contemplated.

Once available skirt (31) and shoulder (32) of the inner container (30), as shown in Figure 3 the shoulder (32) to the proximal end (35) of the skirt is welded (31), being both attached. Welding can for example be hot air, conduction, ultrasonic, etc. welding can also be performed by a magnetic high frequency field, in the case that both the skirt (31) and the shoulder (32) are constructed of a combination of plastic and metal.

After obtaining the inner container (30), as shown in Figure 4 the inner container (30) within the outer tube (10) is introduced. More specifically, the shoulder (32) of the inner container (30) at the distal end (16) open skirt (1: 1) of the outer tube (10) is introduced and advances the inner container (30) into the outer tube (10) and along the interior space (14) of the outer tube (10). There comes a time, as shown in Figure 5, the shoulder (32) of the inner container (30), and more specifically the edge (38) surrounding the bore (37), contacts the inner wall of the head ( 12) of the outer tube (10), and more specifically the inner wall of the platform (18).

Then, the shoulder (32) of the inner container (30) to the head (12) of the outer tube (10), for example by hot air, by conduction or high frequency welding (in the case that the shoulder (32 ) and / or the head (12) are constructed of a combination of plastic and metal). By welding the sealed joint (40) between the edge (38) of the shoulder (32) of the inner container (30) and the inner wall of the head (12) of the outer tube (10) discussed above, it is formed and also are secured together the outer tube (10) and the inner container (30).

Once inserted and fixed inside the container (30) to the outer tube (10), at the opposite end, as shown in Figure 6, are the distal ends (16, 36) of the skirts (1: 1, 31) the outer tube (10) and the inner container (30) radially spaced by a clearance or distance (r1). Said distance (M) is substantially equal to half the difference between the inner diameter (d1) of the skirt (1: 1) of the outer tube (10) and the outer diameter (d2) of the skirt (31) of the inner container (30). In addition, the distal end (16) of the skirt (1: 1) of the outer tube (10) can protrude a length (h1) from the distal end (36) of the skirt (31) of the inner container (30), such as it is shown in FIGS. Contemplated, however, alternative embodiments in which the distal end (16) of the skirt (1: 1) of the outer tube (10) does not protrude from the distal end (36) of the skirt (31), ie in which the length (h1) is zero.

Then, as illustrated in Figures 7 and 8, an optional additional step consisting of flaring the distal end (36) of the inner container (30) is performed. In this step, it is subjected to the inner container (30), and optionally the outer tube (10), a deformation causing the enlargement of the distal end (36) open skirt (31) of the inner container (30) until its outer diameter (d2) is substantially equal to the inner diameter (d1) of the skirt (1: 1) of the outer tube

(10) and therefore the distal end (36) of the skirt (31) of the inner container (30) is attached internally to the distal end (16) of the skirt

(1: 1) of the outer tube (10). The deformed can, for example, axially inserting a conical part (50) or part of decreasing diameter from the distal end (36) open skirt (31) of the inner container (30) to a predefined depth. In certain embodiments, the deformation can be accomplished with heat, in which case both distal ends (16, 36) are merged; in other embodiments, the deformation can be performed without application of heat, so that both distal ends (16, 36) are detached. Once the conical part (50) has deformed the distal end (36) of the skirt (31) of the inner container (30), the nosepiece (50) is removed. In certain embodiments, such as the embodiment illustrated, the distal end (16) of the skirt (1: 1) of the outer tube (10) is not deformed. In other embodiments, the distal end (16) of the skirt (1: 1) of the outer tube (10) deforms, and can regain its original cylindrical shape after removal of the conical part (50). In other embodiments, the distal end (16) of the skirt (1: 1) of the outer tube (10) deforms and not regain its original cylindrical shape after removal of the conical part (50). In any case, after removing the conical part (50), as shown in Figure 8, a length (h2) of the distal end (36) of the skirt (31) of the inner container (30) abuts against and contacting the skirt (1: 1) of the outer tube (10). In certain embodiments, simultaneously or subsequently to the completion of the deformation, a solder is applied or adhesivado is carried along all or part of the perimeter walls of the distal ends (16, 36) of the skirts (1: 1, 31), so that said distal ends (16, 36) not only abut against but also attached in all or part of said perimeter.

Once the distal ends (16, 36) of the skirts (1: 1, 31) of the outer tube (10) and the inner container (30) abut against deformation, and optionally welded together or adhering the total perimeter or partial the tubular container (1) of Figure 9, which is characterized by having an outer tube (10) intended to be visible and tactilely consumer, and an inner container (30) intended instead to enter obtained contact with the product to be stored in the tubular container (1).

Finally, the tubular container (1) is added a stopper (not shown) or any optional additional element (if not already), and the tubular container (1) to a marketer products such as cosmetic products to be delivered to be packaged in the tubular container (1) their products.

For the marketer of the tubular container (1) according to the invention, even by two tubes (outer tube (10) and the inner container (30)), presents the outward appearance of a conventional tubular container and being formed as more importantly, you can fill and seal identically to a conventional tubular container. The head (12) of the outer tube (10) is the head (3) of the tubular container (1) while the foot (1 1, 31) form the skirt (2) of the tubular container (1). The distal ends (16, 36) of the skirts (1: 1, 31) of the outer tube (10) and the inner container (30) are attached to each other, so that the distal end (6) of the skirt (2 ) of the tubular container (1) there is a single opening communicating with a single interior of the tubular container (1) (which coincides with the interior space (34) of the inner container (30)), allowing the filling of the tubular container ( 1) as usual.

The marketer product (eg cosmetic products) made fill the tubular container (1) with a product (51) (shown in Figures 1 1, 13 and 14), for example a cream, introducing said product ( 51) in the interior space (34, 39) of the inner container (30) through the open distal end (6) of the tubular container (1). Then, as shown in Figure 1 1, a welding of the distal end (6) of the skirt (2) of the tubular container (1) for example by applying to the skirt (2) heat, high frequency, an adhesive is performed, etc. and then applying a pressure on said distal end (6) of the skirt (2) Flattening said distal end (6) and causes the same seal as straight closure as shown in Figure 12. More specifically, sealing is performed on a strip of the distal end (6) having a height (h3) equal to part or all the length (h2) of the widened region (41) of the distal end (36) of the skirt (31) the inner container (30) but, if present, the length (h1) remaining skirt (1: 1) of the outer tube (10). This intimate and strong bond is achieved between the two skirts (1: 1, 31) along the entire perimeter of the skirts (1: 1, 31) along the enlarged region (41) and optionally a end sealing skirt (1: 1) of the outer tube (10) on itself along the length (h1) remaining skirt (1: 1) of the outer tube (10). After the welding, the product (51) housed in the interior of the tubular container (1), specifically in the interior space (34, 39) of the inner container (30), as shown in Figure 1 1 .

Figure 13 illustrates the extraction of product (51) inside the tubular container (1) by a user. As shown, when a user wishes to remove product (51) inside the tubular container (1), the user generally applies two forces (F) side opposing with the help of the fingers or hands. The forces (F) caused a collapse inwardly of the skirt (1: 1) of the outer tube (10) and a consequent increase in pressure in the intermediate cavity (7) between the outer tube (10) and the inner container (30) . In the present embodiment, the one-way valve (25) of the outer tube (10) prevents the air outlet of the intermediate cavity (7), so the collapse of the skirt (1: 1) and the pressure increase in the intermediate cavity (7) in turn cause compression of the inner container

(30), and more specifically skirt (31) of the inner container (30). In alternative embodiments, one or more holes made in the outer tube (10), communicated with the intermediate cavity (7) and preferably devoid of valves could allow egress of air by compressing the outer tube (10) and the tube outer (10) contact and push the inner container (30) causing compression of the skirt

(31) of the inner container (30). While the skirt (31) of the inner container (30) is compressed, the welding of the rim (38) of the shoulder (32) of the inner container (30) against the head (12) of the outer tube (10) is maintained . If the shoulder (32) of the inner container (30) comprises one or more notches or zones of reduced thickness, said notches favor that, if necessary, the shoulder (32) can flex downwards when compression occurs skirt (31) without causing the edge (38) of the shoulder (32) excessively pull head (12) of the outer tube (10).

Compression of the skirt (31) of the inner container (30) causes a pressure increase in the interior space (34, 39) of the inner container (30). When the pressure increase is sufficient, the product (51) begins to be evacuated through the hole (37) of the shoulder (32) of the inner container (30), the interior (22) of the head (12) of the tube outer (10) and the one-way valve (23) in the head (12) of the outer tube (10). When the user stops applying forces (F), the skirt (31) of the outer tube (30) having an elasticity and a tendency to recover the original undeformed shape, begins to open out, creating a vacuum in the cavity intermediate (7). This vacuum causes the outside air through the one-way valve (25) or, in alternative embodiments, through one or more holes valveless formed in the outer tube (10) and communicated with the intermediate cavity ( 7). The air inlet in the intermediate cavity (7) contributes to the skirt (1: 1) of the outer tube (10) ends regaining its original shape, as shown in Figure 14. Meanwhile, the one-way valve (23 ) of the head (12) of the outer tube (10) prevents the return of product (51) or outside air into the interior space (22) of the head (12) of the outer tube (10) and thus into the interior (34, 39) of the inner container (30). Accordingly, the inner container (30) remains in the deformed position, as shown in Figure 14. The fact that the tight connection (40) between the shoulder (32) of the inner container (30) and the head (12 ) of the outer tube (10) is made in an intermediate area of ​​the head (12) of the outer tube (10) helps the inner container (30) deformed not by pulling the outer tube (10) not deformed, and both can keep its deformed and non-deformed position in a relaxed manner. That is, the tubular container (1) described is capable of maintaining its appearance intact after use (recovering after tightening one aspect undeformed as illustrated in Figures 12 and 14), and constitutes a container type "Airless "(English), with the advantages that this entails (mainly the product (51) remains isolated from the outside air, improving conservation and lengthen its life).

Repeated uses of the tubular container (1) produce the increasing compression of the inner container (30), while the outer tube (10) is recovered as explained. Because the shoulder (32) has a large deformability and only is attached to the head (12) of the outer tube (10) by a watertight perimetral band (the sealed joint (40)), the shoulder (32) is deformable and virtually freely folded inwardly, achieving a collapsing and very high rate of return. Should be the edge (27) of the head (12) provided with a projection or seat in which is located the tight connection (40) can be favored folding shoulder (32) together with the skirt (31) the inner container (30) when the product (51) is desalmacena, favoring even greater extent the collapsing of the inner container (30) and being improved even further the rate of return of the tubular container (1). As mentioned above, in alternative embodiments, the intermediate cavity (7) is communicated with the outside via one or more permanent openings (ie, permanently open) made in the outer tube (10), for example in shoulder (17) or the skirt (1: 1) of the outer tube (10). Thus a less expensive, lacking way valve (25) and an assembly operation thereof need not be tubular container is achieved. The amount and / or size of the holes have to provide an effective and comfortable balance to the exhaust pressure loss of the intermediate chamber and the rate of recovery of the original shape of the outer tube.

Regarding the materials from which the outer tube (10) and the inner container (30) of the tubular container (1) is manufactured so far mentioned that both the outer tube (10) and the inner container ( 30) they may be made of plastic formulations, plastic complexes, metal- complex, one or more layers of a textile material, one or more layers of paper, combinations thereof, etc. In short, it is contemplated that the outer tube (10) and the inner container (30) may be made of any material or applicable formulation for tubes made of flexible, such as polypropylenes, polyethylenes, copolymers of polyolefins, rolling complexes with aluminum complex materials laminates with EVOH, etc. However, in a preferred embodiment of the invention the outer tube (10) is made of a plastic and transformed formulation by techniques injection molding, while the inner container (30) is preferably made of a plastic or metallo formulation and more particularly of plastic laminates or metal- complex transformed by forming techniques.

Preferably, the material or materials which is made inside the container (30) satisfies (n) one or more requirements from the following requirements: requirements of impermeability, strength requirements ESCR requirements antideslaminación, requirements for food contact, pharmacopoeia requirements, flexibility requirements, deformability requirements, etc. This allows the inner container (30) performing the functions described herein. In turn, the material or materials of which is made the outer tube (10) satisfy (n) one or more different requirements such as requirements of processability requirements surface quality requirements printability (ability to receive a print) , mechanical rigidity requirements (present a mechanical strength above a threshold value), etc .; furthermore, the material or materials from which the outer tube is made (10) may comprise recycled materials.

Preferably, the material or materials from which the outer tube is made (10) does not satisfy (n) requirements of the material or materials which is made inside the container (30). That is, the outer tube (10) preferably not meet the requirements of the inner container (30). For example, the materials of the outer tube (10) preferably do not meet some requirements of impermeability, resistance ESCR, weldability, antideslaminación, food contact pharmacopoeia, flexibility and / or deformability that do meet the materials of the inner container (30).

Further preferably, the material or materials from which the inner container is made (30) does not satisfy (n) requirements of the material or materials from which the outer tube is made (1 0). That is, the inner container (30) preferably does not meet the requirements of the outer tube (10). For example, the materials of the inner container (30) preferably do not meet some requirements of processability, surface appearance, printability, mechanical strength and / or weldability that do meet the materials of the outer tube (10). This separation of functional requirements into two components-the inner container (30) and outer tube (10) - permits none of them must meet all requirements simultaneously, and therefore facilitates the selection of materials for either tube, impacting greater simplicity in manufacturing and quality of the tubular container (1) end (understood as the ability to meet quality functional throughout the life of the tubular packaging requirements (1)). In short, the problem of non-complete restitution of "airless" packaging twin tubes is solved by using an inner container having a skirt and a shoulder in the form of a wall of decreasing diameter, which has better deformability compared with deformation of the head tubes in the known internal state of the art.

Moreover, the problem of making a seal between the distal ends of an outer tube and an inner container, inserted into the outer tube, by outward deformation, widening or flared distal end of the inner container to be correct attached resolves the distal end of the outer tube, and sealing of both distal ends houses rear, forming an intimate bond between said distal ends along the entire perimeter of both. It is contemplated that this solution can be applied in alternative to tubular containers illustrated for example in tubular containers where both the outer tube and the inner container comprise a respective skirt and a respective head.

Moreover, the problem of the complexity of selection of materials is solved by creating a tubular container having an inner container intended to be hidden and in contact with the product to be stored, and an outer tube intended to be visible, wherein the materials each of said tubes meet different functional requirements, and especially the outer tube does not satisfy the requirements of the inner container. It is contemplated that this solution can be applied in alternative to tubular containers illustrated for example in tubular containers where both the outer tube and the inner container comprise a respective skirt and a respective head

Claims

What is claimed
1 . tubular container (1) of flexible material, comprising: - an outer tube (10), provided with a skirt (1 1) and a head
(12), wherein the skirt (1 1) having a proximal end (15) and a distal end (16), wherein the head (12) extends from the proximal end (15) of the skirt (1 1), and where the skirt (1: 1) and the head (12) delimit an interior space communicably (14, 22) with the outside of the outer tube (10) through a hole (21) in the head (12);
- an inner container (30), provided with a skirt (31) and a flexible shoulder (32), wherein the skirt (31) having a proximal end (35) and a distal end (16), wherein the shoulder (32) it extends from the proximal end (35) of the skirt (31), and wherein the skirt (31) and shoulder (32) delimiting an interior space (34, 39) and shoulder (32) terminates at an edge (38 ) defining an orifice (37) communicated with said interior space (34, 39); where
- the inner container (30) is arranged in the interior space (14, 22) of the outer tube (10) and the shoulder (32) of the inner container (30) is fixed to the head (12) of the outer tube (10), the hole (21) of the head (12) of the outer tube (10) with the interior space (34, 39) of the inner container (30) being communicated.
2. tubular package (1) according to claim 1, characterized by comprising at least one one-way valve (23) allowing exit of fluid from the interior space (34, 39) of the inner container (30) to outside the outer tube (10) and prevents the entry of air from outside the outer tube (10) to the interior space (34, 39) of the inner container.
3. tubular package (1) according to claim 2, characterized in that said one-way valve (23) is arranged in the hole (21) of the head (12) of the outer tube (10).
4. tubular package (1) according to claim 1, characterized in that the skirt (31) of the inner container (30) does not project from the skirt
(1: 1) of the outer tube (10).
5. tubular package (1) according to claim 1, characterized in that the shoulder (32) of the inner container (30) is attached to the head (12) of the outer tube (10) over the edge (38) shoulder (32).
6. tubular package (1) according to claim 1, characterized in that the shoulder (32) is attached to the head (12) of the outer tube (10) along a seal (40) disposed continuously in a complete perimeter around a central longitudinal axis (4) of the tubular container (1).
7. tubular package (1) according to claim 1, characterized by that between the outer tube (10) and the inner container (30) an intermediate cavity (7) is delimited.
8. tubular package (1) according to claim 7, characterized in that the shoulder (32) is attached to the head (12) of the outer tube (10) along a seal (40) disposed continuously in a complete perimeter around a central longitudinal axis (4) of the tubular container (1).
9. tubular package (1) according to claim 8, characterized in that said intermediate cavity (7) is radially outermost with respect to the longitudinal central axis (4) that the sealed joint (40).
10. tubular package (1) according to claim 9, it characterized in that the shoulder (32) of the inner container (30) is only attached to the head (12) of the outer tube (10) along said tight connection (40), the other shoulder (32) disposed radially outermost of the sealed joint (40) and separated from the outer tube (10) being.
eleven . tubular container (1) according to claim 8, it characterized in that the intermediate cavity (7) extending from the sealed joint (40) to the distal end (36) of the skirt (31) around the perimeter of the skirt (31) and shoulder (32) about a longitudinal central axis (4) of the tubular container (1).
12. tubular package (1) according to claim 1 1, it characterized in that the distal end (36) of the skirt (31) of the inner container (30) is in contact with the distal end (16) of the skirt (1: 1) of the outer tube (10).
13. tubular package (1) according to claim 9, it characterized in that the distal end (36) of the skirt (31) of the inner container (30) is in contact with the distal end (16) of the skirt ( January 1) of the outer tube (10) along a full circumference about the longitudinal central axis (4).
14. tubular package (1) according to claim 10, characterized in that the distal end (36) of the skirt (31) of the inner container (30) is attached to the distal end (16) of the skirt (1 1 ) of the outer tube (10) in at least part of said perimeter.
15. tubular package (1) according to claim 7, characterized in that the outer tube (10) comprises at least one orifice (24) communicating the intermediate cavity (7) with the outside of the outer tube (10).
16. tubular package (1) according to claim 15, characterized in that said opening (24) one-way valve (25) allowing entry of air from outside the outer tube (10) to the cavity is provided intermediate (7) and preventing the air outlet from the intermediate cavity (7) outside the outer tube (10).
17. tubular package (1) according to claim 16, characterized in that said intermediate cavity (7), said opening (24) and said one-way valve (25) are radially outermost with respect to the longitudinal central axis (4) that the tight connection (40).
18. Method of manufacturing a tubular package (1) of flexible material, comprising the steps of:
- obtaining an outer tube (10) provided with a skirt (1: 1) and a head (12), wherein the skirt (1: 1) having a proximal end (15) and a distal end (16), wherein the head (12 ) extending from the proximal end (15) of the skirt (1: 1), and wherein the skirt (1: 1) and the head (12) delimiting a communicable interior space (14, 22) with the outside of the outer tube (10 ) through a hole (21) in the head (12);
- obtaining an inner container (30), provided with a skirt (31) and a flexible shoulder (32), wherein the skirt (31) having a proximal end (35) and a distal end (16), wherein the shoulder (32 ) extends from the proximal end (35) of the skirt (31), and wherein the skirt (31) and shoulder (32) delimiting an interior space (34, 39) and shoulder (32) terminates at an edge ( 38) defining an orifice (37) communicated with said interior space (34, 39); where - inserting the inner container (30) in the interior space (14, 22) of the outer tube (10), and
- fixing the shoulder (32) of the inner container (30) to the head (12) of the outer tube (10), being connected the hole (21) of the head (12) of the outer tube (10) with the interior ( 3. 4,
39) of the inner container (30).
19. Method according to claim 18, characterized in that the step of obtaining an outer tube (10) comprises obtaining the skirt (1: 1) of the outer tube (10) forming the extrusion head (12) of the outer tube (10) by overmoulding mold on the skirt (1: 1) of the outer tube (10).
20. Method according to claim 18, characterized in that the step of obtaining an outer tube (10) comprises obtaining the skirt (1 1) of the outer tube (10) by injection molding and form the head (12) outer tube (10) by overmoulding mold on the skirt (1: 1) of the outer tube (10).
twenty-one . Method according to claim 18, characterized in that the step of obtaining an outer tube (10) comprises obtaining said outer tube (10) by a process of co-injection mold skirt (1: 1) and the head (12 ) of the outer tube (10).
22. Method according to claim 18, characterized in that the step of obtaining an inner container (30) comprises obtaining skirt
(31) of the inner container (30) by extrusion and forming the shoulder (32) of the inner container (30) by overmoulding mold on the skirt (31) of the inner container (30).
23. Method according to claim 18, characterized in that the step of obtaining an inner container (30) comprises obtaining the skirt (31) of the inner container (30) by injection molding and form the shoulder (32) of the container inner (30) by overmoulding mold on the skirt (31) of the inner container (30).
24. Method according to claim 18, characterized in that the step of obtaining an inner container (30) comprises obtaining said inner container (30) by a process of co-injection mold skirt (31) and shoulder ( 32) of the inner container (30).
25. Method according to claim 18, characterized in that the step of obtaining an inner container (30) comprising: obtaining a first sheet of plastic or metalloplastic complex, deforming said first sheet into the tubular shape, sealing adjacent edges the tubular shape to maintain the tubular form, obtaining the skirt (31) of the inner container (30); obtaining a second sheet of a plastic or metalloplastic complex; providing said second sheet with a hole; applying a pattern to said second sheet provided with said hole, forming the shoulder (32) of the inner container (30); and fixing said shoulder (32) of the inner container (30) to said skirt (31) of the inner container (30).
26. tubular package (1) of flexible material, comprising:
- an outer tube (10), provided with a skirt (1: 1) and a head (12), wherein the skirt (1: 1) having a proximal end (15) and a distal end (16), wherein the head (12 ) extending from the proximal end (15) of the skirt (1: 1), and wherein the skirt (1: 1) and the head (12) delimiting a communicable interior space (14, 22) with the outside of the outer tube (10 ) through a hole (21) in the head (12);
- an inner container (30), provided with a skirt (31) having a proximal end (35) and a distal end (16); where
- the inner container (30) is arranged in the interior space (14, 22) of the outer tube (10), and the distal end (36) of the skirt (31) of the inner container (30) is flared and contact with the distal end (16) of the skirt (1: 1) of the outer tube (10).
27. tubular package (1) according to claim 26, characterized in that the distal end (36) of the skirt (31) of the inner container (30) is flared and contacts the distal end (16) of the skirt (1 1) of the outer tube (10) in a complete perimeter around a central longitudinal axis (4) of the tubular container (1).
28. tubular package (1) according to claim 26, characterized in that the distal end (36) of the skirt (31) of the inner container (30) is disposed flush with the distal end (16) of the skirt ( January 1) of the outer tube (10).
29. tubular package (1) according to claim 26, characterized in that the distal end (16) of the skirt (1 1) of the outer tube (10) projects a length (h1) of the distal end (36) skirt (31) of the inner container (30).
30. tubular package (1) according to claim 26, characterized in that the distal end (36) of the skirt (31) of the inner container (30) is attached to the distal end (16) of the skirt (1 1 ) of the outer tube (10) in at least part of a perimeter around a central longitudinal axis (4) of the tubular container (1).
31. tubular container (1) according to claim 30, characterized in that the distal end (36) of the skirt (31) of the inner container (30) is attached to the distal end (16) of the skirt (1 1) of outer tube (10) by a weld, an adhesive or a combination of both.
32. Method of manufacturing a tubular package (1) of flexible material, comprising the steps of:
- obtaining an outer tube (10) provided with a skirt (1: 1) and a head (12), wherein the skirt (1: 1) having a proximal end (15) and a distal end (16), wherein the head (12 ) extending from the proximal end (15) of the skirt (1: 1), and wherein the skirt (1: 1) and the head (12) delimiting a communicable interior space (14, 22) with the outside of the outer tube (10 ) through a hole (21) in the head (12);
- obtaining an inner container (30) having a skirt (31), wherein said skirt (31) having a proximal end (35) and a distal end (16);
- inserting the inner container (30) in the interior space (14, 22) of the outer tube (10); and - flaring the distal end (36) of the skirt (31) of the inner container (30), leaving the distal end (36) of the skirt (31) of the inner container (30) flared in contact with the distal end ( 16) of skirt (1: 1) of the outer tube (10).
33. Method according to claim 32, characterized by the step of flaring the distal end (36) of the skirt (31) of the inner container (30) includes flaring a full perimeter of the distal end (36) of the skirt (31) of the inner container (30) about a longitudinal central axis (4) of the tubular container (1), leaving the distal end (36) of the skirt (31) of the inner container (30) widening and contact distal end (16) of the skirt (1: 1) of the outer tube (10) along said entire perimeter.
34. Method according to claim 32, characterized by the step of flaring the distal end (36) of the skirt (31) of the inner container (30) comprises introducing a conical part (50) at said distal end (36 ) of the skirt (31) of the inner container (30) and deforming the distal end (36) of the skirt (31) of the inner container (30) against the distal end (16) of the skirt (1: 1) of the outer tube (10).
35. Method according to claim 32, characterized by the step of inserting the inner container (30) comprises inserting the inner container (30) until the distal end (36) of the skirt (31) of the inner container ( 30) it is disposed flush with the distal end (16) of the skirt (1: 1) of the outer tube (10).
36. Method according to claim 32, characterized by the step of inserting the inner container (30) comprises inserting the inner container (30) until the distal end (16) of the skirt (1: 1) of the outer tube (10) projects a length (h1) of the distal end (36) of the skirt (31) of the inner container (30).
37. Method according to claim 32, characterized by comprising the further step of fixing the distal end (36) of the skirt (31) of the inner container (30) to the distal end (16) of the skirt (January 1 ) of the outer tube (10) in at least part of a perimeter around a central longitudinal axis (4) of the tubular container (1).
38. Method according to claim 37, characterized in that said step of fixing the distal end (36) of the skirt (31) of the inner container (30) comprises performing a weld, a adhesivado or a combination of both.
39. Method according to claim 32, characterized in that the step of obtaining an outer tube (10) comprises obtaining the skirt (1: 1) of the outer tube (10) forming the extrusion head (12) of the outer tube (10) by overmoulding mold on the skirt (1: 1) of the outer tube (10).
40. Method according to claim 32, characterized in that the step of obtaining an outer tube (10) comprises obtaining the skirt (1: 1) of the outer tube (10) by injection molding and form the head (12) outer tube (10) by overmoulding mold on the skirt (1: 1) of the outer tube (10).
41. Method according to claim 32, characterized in that the step of obtaining an outer tube (10) comprises obtaining said outer tube (10) by a process of co-injection mold skirt (1: 1) and the head (12 ) of the outer tube (10).
42. Method according to claim 32, characterized in that the step of obtaining an inner container (30) comprises obtaining the skirt (31) of the inner container (30) by extrusion.
43. Method according to claim 32, characterized in that the step of obtaining an inner container (30) comprises obtaining the skirt (31) of the inner container (30) by injection molding.
44. Method according to claim 32, characterized in that the step of obtaining an inner container (30) comprises obtaining a sheet of a plastic or metalloplastic complex, deforming said sheet into the tubular shape, sealing adjacent edges of the form tubular to maintain the tubular shape and obtaining the skirt (31) of the inner container (30).
45. tubular package (1) of flexible material, comprising a skirt (2), a head (3) and an interior space for receiving a product (51), comprising:
- an outer tube (10), provided with a skirt (1: 1) and a head (12), wherein the skirt (1: 1) having a proximal end (15) and a distal end (16), wherein the head (12 ) extending from the proximal end (15) of the skirt (1: 1), and wherein the skirt (1: 1) and the head (12) delimiting a communicable interior space (14, 22) with the outside of the outer tube (10 ) through a hole (21) in the head (12);
- an inner container (30) disposed in the interior space (14, 22) of the outer tube (10) and having an interior space (34, 39) providing at least part of the inner space of the tubular container (1) and it is connected to the hole (21) of the head (12) of the outer tube (10); where
- at least part of the inner container (30) is made of a first material or first combination of materials configured to meet a first condition; Y
- at least part of the outer tube (10) is made of a second material or second combination of materials not configured to meet said first condition.
46. ​​tubular package (1) according to claim 45, characterized in that said first condition is a requirement of impermeability.
47. tubular package (1) according to claim 45, characterized in that it said first condition is a requirement of resistance ESCR.
48. tubular package (1) according to claim 45, characterized in that it said first condition is a requirement antideslaminación.
49. tubular package (1) according to claim 45, characterized in that it said first condition is a requirement of food contact.
50. tubular package (1) according to claim 45, characterized in that said first condition is a requirement of Pharmacopoeia.
51. tubular container (1) according to claim 45, characterized in that it said first condition is a requirement for flexibility.
52. tubular package (1) according to claim 45, characterized in that said first condition is a requirement of deformability.
53. tubular package (1) according to claim 45, characterized in that the second material or second combination of manteriales comprises recycled material.
54. tubular package (1) according to claim 45, characterized in that the second material or second material combination is configured to serve a second requirement which is not met by the first material or first combination of materials.
55. tubular package (1) according to claim 54, characterized in that it said second condition is a requirement of processability.
56. tubular package (1) according to claim 54, characterized in that it said second condition is a requirement of surface appearance.
57. tubular package (1) according to claim 54, characterized in that it said second condition is a requirement printability.
58. tubular package (1) according to claim 54, characterized in that it said second condition is a requirement of mechanical strength.
59. Method of manufacturing a tubular package (1) of flexible material, comprising a skirt (2), a head (3) and an interior space for receiving a product (51), comprising:
- obtain first material or first combination of materials configured to meet a first condition;
- obtaining, using said first material or first combination of materials, an outer tube (10) provided with a skirt (1: 1) and a head (12), wherein the skirt (1: 1) having a proximal end (15) and distal end (16), wherein the head (12) extends from the proximal end (15) of the skirt (1: 1), and wherein the skirt (1: 1) and the head (12) delimiting an interior space (14, 22) communicable with the outside of the outer tube (10) through a hole (21) in the head (12);
- obtaining a second material or second combination of materials not configured to meet said first condition;
- obtaining, using said second material or second material combination, an inner container (30) having an interior space (34, 39);
- inserting said inner container (30) in the interior space (14, 22) of the outer tube (10), said interior space (34, 39) at least part of the inner space of the tubular container
(1) and leaving said inner space (34, 39) connected to the hole (21) of the head (12) of the outer tube (10).
PCT/ES2016/070252 2016-03-15 2016-04-13 Tubular container with an outer tube and an inner container WO2017158209A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES201630304A ES2632977A1 (en) 2016-03-15 2016-03-15 tubular container with an outer tube and an inner container
ESP201630304 2016-03-15

Publications (1)

Publication Number Publication Date
WO2017158209A1 true true WO2017158209A1 (en) 2017-09-21

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ID=56098274

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Country Link
ES (1) ES2632977A1 (en)
WO (1) WO2017158209A1 (en)

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