ES1282880U - RECYCLABLE THREADED METAL CAP (Machine-translation by Google Translate, not legally binding) - Google Patents

RECYCLABLE THREADED METAL CAP (Machine-translation by Google Translate, not legally binding) Download PDF

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Publication number
ES1282880U
ES1282880U ES202132085U ES202132085U ES1282880U ES 1282880 U ES1282880 U ES 1282880U ES 202132085 U ES202132085 U ES 202132085U ES 202132085 U ES202132085 U ES 202132085U ES 1282880 U ES1282880 U ES 1282880U
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Prior art keywords
recyclable
inserts
internal
thread
metal cap
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ES202132085U
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ES1282880Y (en
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I Bassas Guillem Serrat
I Pujol Albert Sala
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Tecniques dEstampacio i Embuticio de Metalls SA
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Tecniques dEstampacio i Embuticio de Metalls SA
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/80Packaging reuse or recycling, e.g. of multilayer packaging

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Abstract

Recyclable threaded metal cap that, applicable for closing a container (4) by thread, comprises an external metal part (5) and an internal part (6) where it incorporates a first thread part that fits into a second part Thread (3) provided on the neck (7) of the container (4), is characterized in that the internal part (6) is made of the same metal as the external part (5), and that said first thread part is defined by several inserts (2) of a second material (2) that form segments of helical thickening complementary to the helical thickening that defines the second thread part (3) in the neck (7) of the container (4), the volume of the inserts (2) such that it does not affect the recyclability of the lid (1) including the inserts (2). (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPCIÓNDESCRIPTION

TAPA METÁLICA DE ROSCA RECICLABLERECYCLABLE THREADED METAL CAP

MEMORIA DESCRIPTIVA OBJETO DE LA INVENCIÓNDESCRIPTIVE MEMORY OBJECT OF THE INVENTION

La invención, tal como expresa el enunciado de la presente memoria descriptiva, se refiere a una tapa metálica de rosca que es reciclable y que aporta, a la función a que se destina, ventajas y características, que se describen en detalle más adelante y que suponen una mejora del estado actual de la técnica.The invention, as expressed in the wording of the present specification, refers to a metal screw cap that is recyclable and that provides, for its intended function, advantages and characteristics, which are described in detail below and which they represent an improvement of the current state of the art.

El objeto de la presente invención recae en una tapa o tapón de rosca, en particular una tapa metálica destinada al cierre, hermético o no, de envases metálicos, de vidrio u otro material, incluidos, entre otros, los envases destinados a productos cosméticos, de dermatología o maquillaje, la cual presenta la particularidad de comprender, en lugar de una pieza interna de plástico con la rosca, únicamente unos pequeños segmentos de rosca de un segundo material, tal como un material plástico, que suponen una mínima cantidad de material distinto al metal con que está fabricado el resto de la tapa permitiendo un correcto reciclado de la misma, una vez finalizada la vida útil del envase, sin dejar de proporcionar un perfecto cierre, incluso hermético, como el que ofrecen las tapas con interior de plástico.The object of the present invention lies in a cap or screw cap, in particular a metal cap intended for the closure, hermetic or not, of metal containers, glass or other material, including, among others, containers intended for cosmetic products, of dermatology or makeup, which has the particularity of comprising, instead of an internal plastic piece with the thread, only small thread segments of a second material, such as a plastic material, which represent a minimum amount of different material to the metal with which the rest of the lid is made, allowing it to be properly recycled, once the useful life of the container is over, while still providing a perfect closure, even hermetic, such as that offered by plastic lids.

CAMPO DE APLICACIÓN DE LA INVENCIÓNFIELD OF APPLICATION OF THE INVENTION

El campo de aplicación de la presente invención se enmarca dentro del sector de la industria dedicada a la fabricación de envases, centrándose particularmente en el ámbito de las tapas o tapones con cierre de rosca para los mismos, abarcando todo tipo de envases, incluidos, entre otros, envases para productos cosméticos, de dermatología o maquillaje, ANTECEDENTES DE LA INVENCIÓN The field of application of the present invention is framed within the sector of the industry dedicated to the manufacture of containers, focusing particularly on the field of caps or caps with screw closure for the same, covering all types of containers, including, among others, packaging for cosmetic, dermatology or makeup products, BACKGROUND OF THE INVENTION

Actualmente, para el cierre perfecto de los envases con tapa metálica de rosca que aquí concierne, a veces hermético, se suele recurrir a la utilización de una pieza interna de material plástico cilíndrica, normalmente a modo de funda interna, donde se integra el resalto helicoidal que define la rosca de la tapa. Ello es debido a que el plástico, a diferencia del metal, presenta un mayor grado de flexibilidad y menor fricción con el vidrio o el metal del envase, en cuyo gollete se encuentra la parte complementaria de la rosca. Esto es particularmente importante cuando el vidrio es el material del recipiente, ya que la producción de vidrio tiene una variabilidad de tamaño significativa.Currently, for the perfect closure of the containers with a metallic screw cap that concerns here, sometimes hermetic, it is usually resorted to the use of an internal piece of cylindrical plastic material, usually as an internal sleeve, where the helical projection is integrated that defines the thread of the cap. This is due to the fact that plastic, unlike metal, has a greater degree of flexibility and less friction with the glass or metal of the container, in whose neck the complementary part of the thread is located. This is particularly important when glass is the container material, as glass production has significant size variability.

Generalmente, las tapas metálicas con dichas piezas internas de plástico no son aptas para el reciclaje, puesto que ambas piezas, la pieza externa de metal y la interna de plástico, suelen estar unidas de una manera sólida y por lo tanto no se pueden reciclar ni como plástico ni como metal. En el caso de que las tapas metálicas con una pieza interna de plástico sean desmontables, el consumidor no siempre separa ambas piezas para su correcto reciclado. Por último, el mercado demanda cada vez productos más sostenibles con el mínimo peso de material plástico posible o de mono material para que se pueda reciclar más fácilmente.Generally, the metal lids with said internal plastic parts are not suitable for recycling, since both parts, the external metal part and the internal plastic part, are usually joined in a solid way and therefore cannot be recycled or like plastic or metal. In the event that the metal covers with an internal plastic part are removable, the consumer does not always separate both parts for their correct recycling. Finally, the market increasingly demands more sustainable products with the minimum possible weight of plastic material or mono material so that it can be recycled more easily.

Las actuales estrategias empresariales de sostenibilidad exigen productos mono-materiales para facilitar el reciclaje. El uso de envases con tapa completamente fabricada en aluminio, o de otro metal de características similares, es una demanda real del mercado actual. No obstante, existen desafíos técnicos que resolver. Uno de ellos es la reducción de la fricción entre dos piezas de aluminio (o metal de que se trate), o entre el aluminio (o metal) y el vidrio sin dejar de garantizar un cierre perfecto. Current business sustainability strategies require mono-material products to facilitate recycling. The use of containers with a lid completely made of aluminum, or another metal with similar characteristics, is a real demand in the current market. However, there are technical challenges to solve. One of them is the reduction of friction between two pieces of aluminum (or metal in question), or between aluminum (or metal) and glass while ensuring a perfect seal.

El objetivo de la presente invención es, pues, el desarrollo de una tapa o tapón mejorada para envases, totalmente eficiente sin la citada pieza interior de plástico, con la rosca para envases metálicos o de vidrio, que permite solventar la problemática descrita anteriormente, es decir usar un único material o reducir al mínimo el uso del plástico en la rosca y la de reducir la fricción entre dos piezas de aluminio (o metal de que se trate), o entre el aluminio (o metal) y el vidrio sin dejar de garantizar un cierre perfecto del envase.The objective of the present invention is, therefore, the development of an improved lid or stopper for containers, totally efficient without the aforementioned plastic inner piece, with the thread for metal or glass containers, which allows solving the problems described above. say to use a single material or to minimize the use of plastic in the thread and to reduce the friction between two pieces of aluminum (or metal in question), or between aluminum (or metal) and the glass while guarantee a perfect closure of the container.

Por otra parte, y como referencia al estado actual de la técnica, aunque se conocen en el mercado numerosos tipos de tapas de rosca, al menos por parte del solicitante, se desconoce la existencia de ninguna que presente unas características técnicas y estructurales iguales o semejantes a las que presenta la que aquí se reivindica.On the other hand, and as a reference to the current state of the art, although numerous types of screw caps are known on the market, at least by the applicant, the existence of any that present the same or similar technical and structural characteristics is unknown. to those presented by the one claimed here.

EXPLICACIÓN DE LA INVENCIÓNEXPLANATION OF THE INVENTION

La tapa metálica de rosca reciclable que la invención propone se configura como la solución idónea al objetivo anteriormente señalado, estando los detalles caracterizadores que lo hacen posible y que la distinguen convenientemente recogidos en las reivindicaciones finales que acompañan a la presente descripción.The recyclable metal screw cap that the invention proposes is configured as the ideal solution to the aforementioned objective, the characterizing details that make it possible and that distinguish it conveniently included in the final claims that accompany this description.

Concretamente, lo que la invención propone, como se ha apuntado anteriormente, es una tapa o tapón, en particular una tapa metálica destinada al cierre mediante rosca, hermético o no, de envases metálicos, de vidrio u otro material, por ejemplo para productos cosméticos, de dermatología o de maquillaje, la cual se distingue por el hecho de que, en lugar de una pieza interna cilíndrica de plástico donde incorpora la rosca, y que se fija al interior de la parte externa y metálica de la tapa, presenta la particularidad de estar constituida del mismo metal que la pieza externa, y por el hecho de que dicha primera parte de rosca está definida por varios insertos de un segundo material, tal como el plástico, que forman unos segmentos de regruesamiento helicoidal complementario con el regruesamiento helicoidal que define la segunda parte de rosca en el gollete del envase, siendo el volumen de los insertos (2) tal que no afecta a la reciclabilidad del tapa (1) incluyendo los insertos (2).Specifically, what the invention proposes, as noted above, is a lid or stopper, in particular a metal lid intended for the closure by means of a screw, hermetic or not, of metal, glass or other material containers, for example for cosmetic products. , dermatology or makeup, which is distinguished by the fact that, instead of an internal cylindrical plastic part where it incorporates the thread, and which is fixed to the inside of the external and metallic part of the cap, it presents the particularity of being made of the same metal as the external part, and by the fact that said first thread part is defined by several inserts of a second material, such as plastic, which form segments of helical thickening complementary to the helical thickening that defines the second thread part in the neck of the container, the volume of the inserts (2) being such that it does not affect the recyclability of the lid (1) including the inserts (2).

Estos insertos de un segundo material suponen una mínima cantidad de material distinto al metal con que está fabricado el resto de la tapa, permitiendo un correcto reciclado de la misma una vez finalizada la vida útil del envase sin necesidad de separar materiales y a la vez proporciona un perfecto cierre, incluso hermético, con la rosca del envase, ya sea metálico, de vidrio, u de otro material como el que ofrecen las tapas convencionales con interior de plástico.These inserts of a second material suppose a minimum amount of material other than the metal with which the rest of the lid is manufactured, allowing a correct recycling of the same once the useful life of the container has ended without the need to separate materials and at the same time provides a perfect closure, even hermetic, with the thread of the container, whether metal, glass, or other material such as that offered by conventional lids with plastic interior.

Para ello, preferentemente, la tapa de la invención comprende, una pieza externa metálica, y una pieza interna, también metálica y del mismo material, normalmente aluminio, pero sin que ello suponga una limitación, provista de una serie de taladros, preferentemente cuatro, repartidos radialmente en su pared lateral y en las que incorpora unos insertos de un segundo material, tal como un material plástico, que definen, por la cara interna de dicha pared lateral, unos segmentos de regruesamiento helicoidal de una rosca que es complementaria con el regruesamiento helicoidal que define la rosca del gollete del envase a que se destina la tapa.For this, preferably, the cover of the invention comprises an external metal part, and an internal part, also metal and of the same material, usually aluminum, but without this implying a limitation, provided with a series of holes, preferably four, distributed radially on its side wall and in which it incorporates inserts of a second material, such as a plastic material, which define, on the internal face of said side wall, segments of helical thickening of a thread that is complementary to the thickening helical that defines the thread of the neck of the container for which the lid is intended.

Preferentemente, dichos insertos y segmentos comprenden un rebaje perimetral que evitan que estos, una vez están incorporados en los descritos taladros de la pared lateral de la pieza interna, se salgan.Preferably, said inserts and segments comprise a perimeter recess that prevent these, once they are incorporated in the described holes in the side wall of the internal part, from coming out.

Por otra parte, para conseguir el acople mutuo de la pieza externa con la pieza interna de la tapa, se ha previsto un doblez en el borde inferior de la pared lateral de la pieza externa que ajusta bajo el borde sobresaliente de unos recortes en U practicados al efecto en la pared lateral de la pieza interna, de manera que, tras forzar la inserción de esta pieza interna y sobrepasar dicho reborde con los recortes en U, el borde sobresaliente de los mismos impide que la pieza interna vuelva a salirse de su sitio.On the other hand, to achieve the mutual coupling of the external part with the internal part of the lid, a fold has been provided in the lower edge of the side wall of the external part that fits under the projecting edge of some U-shaped cutouts made for this purpose in the side wall of the internal part, so that, After forcing the insertion of this internal piece and passing said rim with the U-shaped cutouts, the projecting edge thereof prevents the internal piece from coming out of place again.

DESCRIPCIÓN DE LOS DIBUJOSDESCRIPTION OF THE DRAWINGS

Para complementar la descripción que se está realizando y con objeto de ayudar a una mejor comprensión de las características de la invención, se acompaña a la presente memoria descriptiva, como parte integrante de la misma, un juego de planos en el que con carácter ilustrativo y no limitativo se ha representado lo siguiente:To complement the description that is being made and in order to help a better understanding of the characteristics of the invention, the present specification is attached, as an integral part thereof, to a set of plans in which for illustrative purposes and non-limiting, the following has been represented:

La figura número 1.- Muestra una vista en perspectiva y en despiece explosionado de un ejemplo de realización de la tapa metálica de rosca reciclable incluyendo un ejemplo del envase a que se destina, apreciándose las partes y elementos que comprende, así como la configuración y disposición de las mismas;Figure number 1.- Shows a perspective and exploded exploded view of an embodiment of the recyclable metal screw cap including an example of the container for which it is intended, appreciating the parts and elements it comprises, as well as the configuration and disposition of the same;

la figura número 2.- Muestra una vista en alzado seccionado del conjunto mostrado en la figura anterior, de tapa y envase, una vez montado y cerrado;Figure number 2.- Shows a sectioned elevation view of the set shown in the previous figure, of lid and container, once assembled and closed;

la figura número 3.- Muestra una vista en perspectiva y en sección de la tapa de la invención, apreciándose las partes y elementos que comprende una vez montados;Figure number 3.- Shows a perspective and sectional view of the lid of the invention, showing the parts and elements that it comprises once assembled;

la figura número 4.- Muestra una vista en alzado y seccionado de la tapa mostrada en la figura 3;Figure number 4.- Shows an elevation and sectional view of the cover shown in figure 3;

la figura número 5.- Muestra una vista ampliada del detalle A, señalado en la figura 4, que muestra el acople entre la pieza interna y externa de la tapa;Figure number 5.- Shows an enlarged view of detail A, indicated in figure 4, showing the coupling between the internal and external part of the cover;

la figura número 6.- Muestra una vista en planta inferior de la pieza interna de la tapa;Figure number 6.- Shows a bottom plan view of the internal part of the lid;

la figura número 7.- Muestra una vista en sección del corte B1 del tabique de la pieza interna señalado en la figura 6;Figure number 7.- Shows a sectional view of the section B1 of the partition of the internal part indicated in figure 6;

la figura número 8.- Muestra una vista en sección del corte B-B de la pieza interna de la tapa señalado en la figura 6;Figure number 8.- Shows a sectional view of the section B-B of the internal part of the cover indicated in figure 6;

las figuras número 9 y 10.- Muestran sendas vistas, en perspectiva y planta respectivamente, de uno de los insertos que constituye la rosca de la tapa de la invención, apreciándose su configuración; yFigures 9 and 10.- They show respective views, in perspective and plan respectively, of one of the inserts that constitutes the thread of the lid of the invention, its configuration being appreciated; Y

la figura número 11.- Muestra una vista ampliada del escalón de encajado con que cuenta el inserto para su fijación a la pieza interna de la tapa.Figure number 11.- Shows an enlarged view of the nesting step that the insert has for fixing it to the internal part of the cover.

REALIZACIÓN PREFERENTE DE LA INVENCIÓNPREFERRED EMBODIMENT OF THE INVENTION

A la vista de las mencionadas figuras, y de acuerdo con la numeración adoptada, se puede observar en ellas un ejemplo de realización no limitativa de la tapa metálica de rosca reciclable de la invención, la cual comprende lo que se describe en detalle a continuación.In view of the aforementioned figures, and in accordance with the adopted numbering, a non-limiting example of an embodiment of the recyclable metal screw cap of the invention can be observed, which comprises what is described in detail below.

Así, tal como se observa en dichas figuras, la tapa (1) de la invención, aplicable para el cierre mediante rosca (2, 3) de un envase (4) metálico, de vidrio u otro, por ejemplo, para productos cosméticos, de dermatología o maquillaje, siendo de las que comprende una pieza externa (5) metálica y una pieza interna (6) donde incorpora una primera parte de rosca (2) que encaja en una segunda parte de rosca (3) prevista en el gollete (7) del envase (4).Thus, as can be seen in said figures, the lid (1) of the invention, applicable for the closure by means of a thread (2, 3) of a metal, glass or other container (4), for example, for cosmetic products, dermatology or make-up, being one of those that comprises an external metal part (5) and an internal part (6) where it incorporates a first thread part (2) that fits into a second thread part (3) provided in the neck (7) of the container (4).

La tapa (1) de la invención se distingue por el hecho de que dicha pieza interna (6) es del mismo metal que la pieza externa (5), por ejemplo aluminio, y por el hecho de que dicha primera parte de rosca está definida por varios insertos (2) de un segundo material, tal como el plástico, que forman unos segmentos de regruesamiento helicoidal complementario con el regruesamiento helicoidal que define la segunda parte de rosca (3) en el gollete (7) del envase (4), siendo el volumen de los insertos (2) tal que no afecta.The cover (1) of the invention is distinguished by the fact that said internal part (6) is made of the same metal as the external part (5), for example aluminum, and by the fact that said first thread part is defined by several inserts (2) of a second material, such as plastic, which form segments of helical thickening complementary to the helical thickening that defines the second thread part (3) in the neck (7) of the container (4), the volume of the inserts (2) being such that it does not affect.

Preferentemente, la pieza interna (6) de la tapa (1) presenta una serie limitada de taladros (8), preferiblemente 4, repartidos radialmente en su pared lateral, en los que incorpora cada uno de los insertos (2) mediante presión, que definen, por la cara interna de la pieza interna (6), correspondientes segmentos de regruesamiento helicoidal de una primera parte de rosca que es complementaria con el regruesamiento helicoidal que define la segunda parte de rosca (3) en el gollete (7) del envase (4) a que se destina la tapa (1).Preferably, the internal part (6) of the cover (1) has a limited series of holes (8), preferably 4, distributed radially on its side wall, in which it incorporates each of the inserts (2) by pressure, which define, on the internal face of the internal part (6), corresponding segments of helical thickening of a first thread part that is complementary to the helical thickening that defines the second thread part (3) in the neck (7) of the container (4) what the cover (1) is intended for.

Preferentemente, tal como muestran las figuras 9 a 11 dichos insertos (2) comprenden un rebaje perimetral (2a) que evita que dichos insertos (2) se salgan de los taladros (8).Preferably, as shown in Figures 9 to 11, said inserts (2) comprise a perimeter recess (2a) that prevents said inserts (2) from coming out of the holes (8).

Preferentemente, para el acople y fijación de la pieza interna (6) dentro de la pieza externa (5), dicha pieza interna (6) presenta una serie de recortes en U (6a) practicados en varios puntos de su pared lateral que definen respectivas zonas flexibles (6b) de borde sobresaliente respecto de la superficie de dicha pared, por la parte externa de la pieza interna (6), como se aprecia en las figuras 7 y 8, cuya finalidad es servir de tope sobre un canto del doblez (5a) practicado en el borde inferior de la pared lateral de la pieza externa (5), tal que, una vez insertada la pieza interna (6) y traspasado dicho canto gracias a la flexibilidad de las mencionadas zonas (6b), el reborde sobresaliente de las mismas impide que la pieza interna (6) pueda volver a salirse de su sitio en el interior de la pieza externa (5).Preferably, for coupling and fixing the internal part (6) within the external part (5), said internal part (6) has a series of U-shaped cutouts (6a) made at various points on its side wall that define respective flexible zones (6b) with projecting edge relative to the surface of said wall, on the outside of the internal part (6), as can be seen in figures 7 and 8, the purpose of which is to serve as a stop on an edge of the fold (5a) made on the lower edge of the side wall of the external part (5), such that, once the internal part (6) has been inserted and said edge has been pierced thanks to the flexibility of the aforementioned areas (6b), the projecting edge thereof prevents the internal part (6) it can come out of its place again inside the external part (5).

Por último, cabe señalar que, para asegurar la hermeticidad del cierre entre la descrita tapa (1) y el envase (4) , preferentemente, se prevé la inserción de un disco desmontable (9) que, a modo de junta, por ejemplo de goma o similar, se incorpora en la cara interna de la base de la pieza interna (6).Finally, it should be noted that, to ensure the tightness of the closure between the described lid (1) and the container (4), preferably, the insertion of a removable disk (9) is foreseen that, as a joint, for example of rubber or similar, is incorporated into the internal face of the base of the internal part (6).

Descrita suficientemente la naturaleza de la presente invención, así como la manera de ponerla en práctica, no se considera necesario hacer más extensa su explicación para que cualquier experto en la materia comprenda su alcance y las ventajas que de ella se derivan. Having sufficiently described the nature of the present invention, as well as the manner of putting it into practice, it is not considered necessary to make its explanation more extensive so that any expert in the field understands its scope and the advantages derived from it.

Claims (6)

REIVINDICACIONES 1. - Tapa metálica de rosca reciclable que, aplicable para el cierre mediante rosca de un envase (4), comprende una pieza externa (5) metálica y una pieza interna (6) donde incorpora una primera parte de rosca que encaja en una segunda parte de rosca (3) prevista en el gollete (7) del envase (4), está caracterizada por que la pieza interna (6) es del mismo metal que la pieza externa (5), y porque dicha primera parte de rosca está definida por varios insertos (2) de un segundo material (2) que forman unos segmentos de regruesamiento helicoidal complementario con el regruesamiento helicoidal que define la segunda parte de rosca (3) en el gollete (7) del envase (4), siendo el volumen de los insertos (2) tal que no afecta a la reciclabilidad del tapa (1) incluyendo los insertos (2).1. - Recyclable threaded metal cap that, applicable for closing a container (4) by thread, comprises an external metal part (5) and an internal part (6) where it incorporates a first thread part that fits into a second Thread part (3) provided in the neck (7) of the container (4), is characterized in that the internal part (6) is made of the same metal as the external part (5), and that said first thread part is defined by several inserts (2) of a second material (2) that form segments of helical thickening complementary to the helical thickening that defines the second thread part (3) in the neck (7) of the container (4), the volume being of the inserts (2) such that it does not affect the recyclability of the lid (1) including the inserts (2). 2. - Tapa metálica de rosca reciclable, según la reivindicación 1, caracterizada porque la pieza interna (6) de la tapa (1) presenta una serie de taladros (8), repartidos radialmente en su pared lateral, en los que incorpora cada uno de los insertos (2) mediante presión.2. - Recyclable threaded metal cap according to claim 1, characterized in that the internal part (6) of the cap (1) has a series of holes (8), radially distributed on its side wall, in which each one incorporates of the inserts (2) by pressure. 3. - Tapa metálica de rosca reciclable, según la reivindicación 2, caracterizada porque insertos (2) comprenden un rebaje perimetral (2a) que evita que dichos insertos (2) se salgan de los taladros (8).3. - Recyclable threaded metal cap according to claim 2, characterized in that inserts (2) comprise a perimeter recess (2a) that prevents said inserts (2) from coming out of the holes (8). 4. - Tapa metálica de rosca reciclable, según la reivindicación 2 o 3, caracterizada porque la pieza interna (6) comprende cuatro taladros (8) con un inserto (2) en cada uno de ellos.4. - Recyclable threaded metal cap according to claim 2 or 3, characterized in that the internal part (6) comprises four holes (8) with an insert (2) in each of them. 5. - Tapa metálica de rosca reciclable, según cualquiera de las reivindicaciones anteriores, caracterizada porque la pieza interna (6) presenta una serie de recortes en U (6a) practicados en varios puntos de su pared lateral que definen respectivas zonas flexibles (6b) de borde sobresaliente respecto de la superficie de dicha pared, por la parte externa de la pieza interna (6), que sirven de tope sobre un canto del doblez (5a) practicado en el borde inferior de la pared lateral de la pieza externa (5), tal que, una vez insertada la pieza interna (6) y traspasado dicho canto gracias a la flexibilidad de las mencionadas zonas (6b), el reborde sobresaliente (6a) de las mismas impide que la pieza interna (6) pueda volver a salirse de su sitio en el interior de la pieza externa (5).5. - Recyclable threaded metal cap, according to any of the preceding claims, characterized in that the internal part (6) has a series of U-shaped cutouts (6a) made at various points on its side wall that define respective flexible areas (6b) edge projecting from the surface of said wall, on the outside of the internal part (6), which serve as a stop on an edge of the fold (5a) made on the lower edge of the side wall of the external part (5), such that, once the internal part (6) has been inserted and said edge has been pierced thanks to the flexibility of the mentioned areas (6b), the projecting edge (6a) thereof prevents the internal part (6) from coming out of its place inside the external part (5). 6.- Tapa metálica de rosca reciclable, según cualquiera de las reivindicaciones anteriores, caracterizada porque prevé la inserción de un disco (9) de goma o similar que, a modo de junta, se incorpora en la cara interna de la base de la pieza interna (6). 6.- Recyclable threaded metal cap, according to any of the preceding claims, characterized in that it provides for the insertion of a rubber disk (9) or similar that, as a gasket, is incorporated into the internal face of the base of the piece internal (6).
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