WO2005012105A2 - Protective device for beverage cans, production method and devices for the production thereof - Google Patents

Protective device for beverage cans, production method and devices for the production thereof Download PDF

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Publication number
WO2005012105A2
WO2005012105A2 PCT/ES2004/000358 ES2004000358W WO2005012105A2 WO 2005012105 A2 WO2005012105 A2 WO 2005012105A2 ES 2004000358 W ES2004000358 W ES 2004000358W WO 2005012105 A2 WO2005012105 A2 WO 2005012105A2
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WO
WIPO (PCT)
Prior art keywords
beverage cans
protection device
plastic material
head
beverage
Prior art date
Application number
PCT/ES2004/000358
Other languages
Spanish (es)
French (fr)
Other versions
WO2005012105A3 (en
Inventor
Christopher Phillip Raoul Lawton
Original Assignee
Lawton Laredo Enterprises, S.L.
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.)
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Publication date
Application filed by Lawton Laredo Enterprises, S.L. filed Critical Lawton Laredo Enterprises, S.L.
Publication of WO2005012105A2 publication Critical patent/WO2005012105A2/en
Publication of WO2005012105A3 publication Critical patent/WO2005012105A3/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4012—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening partially by means of a tearing tab
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/0098—Means for preventing dust contacting pouring opening, e.g. a cover over the tear panel

Definitions

  • the present invention relates to a device that incorporated into the beverage cans ensures a maximum degree of hygiene in its consumption, by avoiding the presence of dirt until the opening of the can.
  • the device is incorporated through an embodiment method that makes use of an apparatus specially adapted to this function.
  • the proposed objective is achieved by incorporating a layer of plastic material perfectly bonded and adapted to the surface of the can and capable of being removed with a single pull. Said layer is deposited by a spraying and curing process, either at room temperature, or by the express application of heat.
  • a cleaning cylinder travels along the inner cylindrical surface of the head, which in turn is movable to rest on the cans temporarily configuring a sealed chamber in which the process of forming the protective device on the can takes place.
  • the end result is a layer of protective plastic material deposited and solidified on the top of the beverage cans, which adapts perfectly to the rings, tabs and other opening devices, without leaving cavities that could be the focus of the development of harmful germs . That layer is Peelable, that is, it can be removed with a single pull, leaving no residue that could constitute contaminating elements.
  • the head of the encapsulation apparatus must be adapted to the diameter and shape of the can, in order to ensure a perfect seal and coating of the same to a convenient point that will depend on the design.
  • the layer of plastic material must not exceed its lower edge in order to prevent untimely detachment of the edge.
  • the protection device of the invention has numerous advantages over other preceding embodiments among which we can mention: -A perfect adhesion, due to the process followed in its realization. -A great elasticity, due to the process and materials used, which allows to ensure adhesion despite temperature variations. -Pelable with a single pull, without leaving residues adhered to the opening area of the can.
  • Canned drinks constitute a product whose use has been extended considerably in recent years given the strength of the container and the fact that it does not require specific utensils for opening.
  • Figure I shows a sectional view of the head, coupled on top of the can.
  • Figure 2 shows a sectional view of the head, with the cleaning cylinder in the low position.
  • Figure 3 shows a sectional view of the head removed from the can, on which the protective device can be seen in the form of a layer of plastic material already made.
  • the numerical references correspond to the following parts and elements: 1. Spray nozzles. 2. Food. 3. Blow duct 4.
  • the protective device for beverage cans (10) consists of a layer of plastic material (6), perfectly adhered and adapted to the upper surface of the beverage can (10 ), covering the opening elements such as the ring (12), and extending over a conical surface (11) without exceeding its lower edge.
  • the upper surface of the beverage can (10), which contains the future opening for consumption, remains clean of any type of dirt until the moment of its use, when it is enough to pull the layer of plastic material (6) so that it is detached, and that due to its peelable characteristic it can be removed without leaving residues.
  • a consistent apparatus is available, as can be seen in figures 1, 2 and 3, in a head (13), with a cylindrical interior surface, which when applied against The beverage can (10) configures a chamber (9) that is completely closed thanks to the action of sealing means (8).
  • These preferably consist of simple rubber o-rings.
  • a plurality of spray nozzles (1) are arranged to project the plastic material that is received through a feed line (2) onto the beverage can (10), presenting the head (13) blow ducts (3) and recovery ducts (4).
  • a heating element (5) is arranged on the inner cylindrical surface of the head (13), this surface being capable of being swept by a cleaning cylinder (7) that moves axially and concentrically thereto.
  • the necessary hydraulic or pneumatic displacement means have not been represented, both of the head (13) with respect to the beverage can (10) and of the cleaning cylinder (7) with respect to the head itself (13), which are conventional and well known by The subject matter expert.
  • the method of realization of the protection device object of the invention comprises the steps of: - Cleaning; consisting of the injection of compressed air through blow ducts (3), dried by the heating element (5) and aspirated from the residue through the recovery ducts (4). -Projection of the plastic material through a plurality of spray nozzles (1). - Recovery of the non-adhered plastic material through the recovery ducts (4), for later use. - Curing of the layer of plastic material (6) by heat input by the heating element (5) - Sterilization of the pores that may have remained between the layer of plastic material (6) and the surface of the beverage can (10 ) by ultraviolet radiation.
  • the material preferably used has been polyethylene, supplied at temperatures between 40 ° C and 90 ° C and with curing temperatures up to 165 ° C, which leads to hardening times of less than 3 seconds. Under these conditions the layer of plastic material (6) deposited is approximately 0.4 mm thick, which allows to obtain the proposed objectives of adhesion, elasticity and ease of peeling. Depending on the plastic material used, the number and arrangement of the spray nozzles (1) may vary. Curing can also be carried out at room temperature, in a time. The ideal place for the installation of the protective projection system object of the invention within the canning chain is between the placement of the plastic rings that make up the groups of cans of drink (10) and their final packaging in plastic film.

Abstract

The protective device comprises a layer of plastic material (6), which is peelable and is adhered to the upper part of the beverage can (10), covers the opening ring (12) and extends almost until the bottom edge of a conical surface (11). The plastic material is projected onto the beverage can (10) by means of spray nozzles (1) arranged in the chamber (9) of a head (13) that can be coupled to the upper part thereof. Before spraying, cleaning is carried out by introducing compressed air through blowing ducts (3) and suctioning the residue through recovery conduits (4). Curing can be done at ambient temperature or by heating with a heating device (5). A cleaning cylinder (7) moves inside the chamber (9) thereby dragging the material that has adhered to the walls. Sterilization of the pores that may remain in the plastic material layer (6) can additionally be carried out by means of ultraviolet radiation.

Description

DISPOSITIVO DE PROTECCIÓN PARA LATAS DE BEBIDA, MÉTODO DE EJECUCIÓN Y APARATO PARA REALIZARLO PROTECTION DEVICE FOR DRINK CANS, EXECUTION METHOD AND APPLIANCE TO PERFORM
DESCRIPCIÓN DE LA INVENCIÓN La presente invención se refiere a un dispositivo que incorporado a las latas de bebida asegura un máximo grado de higiene en su consumo, al evitar la presencia de suciedad hasta el mismo momento de la apertura de la lata. El dispositivo se incorpora a través de un método de realización que hace uso de un aparato especialmente adaptado a esta función. El objetivo propuesto se alcanza mediante la incorporación en la parte superior de la lata de una capa de material plástico perfectamente adherida y adaptada a la superficie de la misma y susceptible de ser retirada de un solo tirón. Dicha capa se deposita mediante un proceso de pulverización y curado, bien a temperatura ambiente, bien mediante la aplicación expresa de calor. Con objeto de garantizar una perfecta adherencia de la capa a los distintos elementos (lengüetas, anillas) presentes en la zona de apertura de la lata es preciso realizar una operación previa de limpieza y secado de la misma, aspirando y eliminando todo rastro de polvo o humedad. Posteriormente al curado, puede ser conveniente someter el producto a la acción de radiación ultravioleta para conseguir un esterilizado adicional de los poros que pudieran haber quedado durante el proceso de fabricación. Todo el proceso se realiza en un sencillo aparato, que puede ser incorporado en la propia línea de montaje y que comprende un cabezal de superficie interior cilindrica provisto de boquillas de pulverización del material plástico, conductos de soplado de aire, conductos de recuperación del material no adherido, elemento calefactor y medios de estanqueidad. Un cilindro limpiador se desplaza a lo largo de la superficie cilindrica interior del cabezal, que a su vez es desplazable para apoyarse sobre las latas configurando temporalmente una cámara estanca en la que tiene lugar el proceso de conformación del dispositivo protector sobre la lata. El resultado final es una capa de material plástico protector depositada y solidificada sobre la parte superior de las latas de bebida, que se adapta perfectamente a las anillas, lengüetas y otros dispositivos de apertura, sin dejar cavidades que pudieran ser foco del desarrollo de gérmenes nocivos. Dicha capa es pelable, es decir puede ser retirada de un solo tirón, sin dejar residuos que pudieran constituir elementos contaminantes. El cabezal del aparato de encapsulado deberá adaptarse al diámetro y forma de la lata, con objeto de asegurar una perfecta estanqueidad y recubrimiento de la misma hasta un punto conveniente que será en función del diseño. Así, ha podido comprobarse que en el caso de latas que presentan una superficie cónica, la capa de material plástico no debe superar su arista inferior con objeto de impedir un despegado intempestivo del borde. El dispositivo de protección de la invención presenta numerosas ventajas sobre otras realizaciones precedentes entre las cuales podemos citar: -Una perfecta adherencia, debido al proceso seguido en su realización. -Una gran elasticidad, debido al proceso y materiales empleados, lo que permite asegurar la adherencia a pesar de las variaciones de temperatura. -Pelable de un solo tirón, sin dejar residuos adheridos en la zona de apertura de la lata.DESCRIPTION OF THE INVENTION The present invention relates to a device that incorporated into the beverage cans ensures a maximum degree of hygiene in its consumption, by avoiding the presence of dirt until the opening of the can. The device is incorporated through an embodiment method that makes use of an apparatus specially adapted to this function. The proposed objective is achieved by incorporating a layer of plastic material perfectly bonded and adapted to the surface of the can and capable of being removed with a single pull. Said layer is deposited by a spraying and curing process, either at room temperature, or by the express application of heat. In order to guarantee a perfect adhesion of the layer to the different elements (tabs, rings) present in the opening area of the can, it is necessary to perform a previous cleaning and drying operation of the can, vacuuming and eliminating any trace of dust or humidity. After curing, it may be convenient to subject the product to the action of ultraviolet radiation to achieve additional sterilization of the pores that may have remained during the manufacturing process. The whole process is carried out in a simple device, which can be incorporated into the assembly line itself and which comprises a cylindrical inner surface head provided with spray nozzles of the plastic material, air blow ducts, non-material recovery ducts adhered, heating element and sealing means. A cleaning cylinder travels along the inner cylindrical surface of the head, which in turn is movable to rest on the cans temporarily configuring a sealed chamber in which the process of forming the protective device on the can takes place. The end result is a layer of protective plastic material deposited and solidified on the top of the beverage cans, which adapts perfectly to the rings, tabs and other opening devices, without leaving cavities that could be the focus of the development of harmful germs . That layer is Peelable, that is, it can be removed with a single pull, leaving no residue that could constitute contaminating elements. The head of the encapsulation apparatus must be adapted to the diameter and shape of the can, in order to ensure a perfect seal and coating of the same to a convenient point that will depend on the design. Thus, it has been found that in the case of cans having a conical surface, the layer of plastic material must not exceed its lower edge in order to prevent untimely detachment of the edge. The protection device of the invention has numerous advantages over other preceding embodiments among which we can mention: -A perfect adhesion, due to the process followed in its realization. -A great elasticity, due to the process and materials used, which allows to ensure adhesion despite temperature variations. -Pelable with a single pull, without leaving residues adhered to the opening area of the can.
ANTECEDENTES DE LA INVENCIÓN Las bebidas en lata constituyen un producto cuyo uso se ha extendido considerablemente en los últimos años dada la solidez del envase y el hecho de no necesitar de utensilios específicos para su apertura. Sin embargo, este mismo éxito que hace que puedan ser encontradas en cualquier lugar, provoca un transporte largo y un almacenamiento descuidado lo que determina, finalmente, un producto que presenta un considerable grado de suciedad. Se han realizado algunos intentos de proteger las latas durante su almacenamiento y transporte, que van desde el encapsulado en grupos hasta la adopción de tapas individuales acopladas mediante un ajuste de forma. Estos sistemas no han dado resultado ya que, aunque protegen la superficie de la lata de depósitos groseros de suciedad no pueden impedir el desarrollo de bacterias en la cavidad que queda entre el elemento de protección y la lata. De hecho, estas cavidades, cerradas y sometidas a la acción del calor y la luz constituyen un excelente espacio para la proliferación de todo tipo de microorganismos que pueden ser más perjudiciales para la salud que la propia suciedad visible. Se conocen asimismo intentos de hacer desaparecer las citadas cavidades mediante la utilización de láminas plásticas recubiertas de un adhesivo. Una tal solución, que puede ser relativamente eficaz sobre superficies lisas, se ha demostrado claramente insuficiente para proteger las zonas de apertura de las latas de bebidas, al presentar éstas rebordes, semiperforados, lengüetas, anillas, remaches y todo tipo de irregularidades que hacen muy difícil la correcta adaptación de una lámina autoadhesiva sobre esta zona de la lata. Es un objetivo de la presente invención el disponer de un dispositivo de protección para latas de bebidas que presentando una perfecta adherencia y adaptación a las mismas, permita su retirada fácil y de una sola vez.BACKGROUND OF THE INVENTION Canned drinks constitute a product whose use has been extended considerably in recent years given the strength of the container and the fact that it does not require specific utensils for opening. However, this same success that can be found anywhere, causes a long transport and careless storage which ultimately determines a product that has a considerable degree of dirt. Some attempts have been made to protect the cans during storage and transport, ranging from encapsulation in groups to the adoption of individual caps coupled by means of a shape adjustment. These systems have not resulted since, although they protect the surface of the can of coarse deposits of dirt, they cannot prevent the development of bacteria in the cavity between the protective element and the can. In fact, these cavities, closed and subjected to the action of heat and light constitute an excellent space for the proliferation of all types of microorganisms that may be more harmful to health than the visible dirt itself. Attempts are also known to remove the said cavities by using plastic sheets coated with an adhesive. One such solution, which can be relatively effective on smooth surfaces, has clearly proved insufficient to protect the opening areas of the beverage cans, as these flanges, semi-perforated, tongues, rings, rivets and all kinds of irregularities are present that make very difficult the correct adaptation of a self-adhesive sheet over this area of the can. It is an objective of the present invention to have a protection device for beverage cans that, having perfect adhesion and adaptation to them, allows easy and one-time removal.
BREVE DESCRIPCIÓN DE LOS DIBUJOS Para complementar la descripción que antecede y con objeto de ayudar a una mejor comprensión de las características de la invención se va a realizar una descripción detallada de una realización preferida, en base a un juego de dibujos que se acompañan a esta memoria descriptiva, y en donde con carácter meramente orientativo y no limitativo, se ha representado lo siguiente. La figura I muestra una vista en sección del cabezaj, acoplado sobre la parte superior de la lata. La figura 2 muestra una vista en sección del cabezal, con el cilindro limpiador en posición baja. La figura 3 muestra una vista en sección del cabezal retirado de la lata, sobre la que se aprecia el dispositivo de protección en forma de capa de material plástico ya realizado. En dichas figuras las referencias numéricas corresponden a las siguientes partes y elementos: 1. Boquillas de pulverización. 2. Alimentación. 3. Conducto de soplado 4. Conducto de recuperación. 5. Elemento calefactor. 6. Capa de material plástico. 7. Cilindro limpiador. 8. Medios de estanqueidad. 9. Cámara. 10. Lata de bebida. 11. Superficie cónica. 12. Anilla. 13. Cabezal. DESCRIPCIÓN DETALLADA DE UNA REALIZACIÓN PREFERIDA Como puede verse en la figura 3, el dispositivo protector para latas de bebida (10) consiste en una capa de material plástico (6), perfectamente adherida y adaptada a la superficie superior de la lata de bebida (10), recubriendo los elementos de apertura tales como la anilla (12), y que se extiende por una superficie cónica (11) sin superar su arista inferior. De esta forma la superficie superior de la lata de bebida (10), que contiene la futura abertura para el consumo, permanece limpia de cualquier tipo de suciedad hasta el momento de su utilización, en que basta dar un tirón a la capa de material plástico (6) para que esta se desprenda, y que debido a su característica pelable podrá ser retirada sin dejar residuos. Para realizar el dispositivo de protección de la invención que se acaba de describir se dispone de un aparato consistente, tal como puede verse en las figuras 1, 2 y 3, en un cabezal (13), de superficie interior cilindrica, que al aplicarse contra la lata de bebida (10) configura una cámara (9) que queda totalmente cerrada gracias a la acción de medios de estanqueidad (8). Estos, preferiblemente, consisten en simples juntas tóricas de caucho. En el interior de la cámara (9) se disponen una pluralidad de boquillas de pulverización (1) para proyectar el material plástico que se recibe a través de un conducto de alimentación (2) sobre la lata de bebida (10), presentando el cabezal (13) conductos de soplado (3) y conductos de recuperación (4). Finalmente sobre la superficie cilindrica interior del cabezal (13) se dispone un elemento calefactor (5), siendo esta superficie susceptible de ser barrida por un cilindro limpiador (7) que se desplaza axialmente y concéntrico a la misma. No se han representado los necesarios medios hidráulicos o neumáticos de desplazamiento, tanto del cabezal (13) respecto a la lata de bebida (10) como del cilindro limpiador (7) respecto al propio cabezal (13), que son convencionales y sobradamente conocidos por el experto en la materia. El método de realización del dispositivo de protección objeto de la invención comprende las etapas de: -Limpieza; consistente en la inyección de aire comprimido a través de conductos de soplado (3), secado mediante el elemento calefactor (5) y aspirado del residuo a través de los conductos de recuperación (4). -Proyección del material plástico a través de una pluralidad de boquillas de pulverización (1). - Recuperación del material plástico no adherido a través de los conductos de recuperación (4), para su utilización posterior. - Curado de la capa de material plástico (6) mediante aportación de calor por el elemento calefactor (5) - Esterilización de los poros que pudieran haber quedado entre la capa de material plástico (6) y la superficie de la lata de bebida (10) mediante radiación ultravioleta. En cuanto a la realización industrial del objeto de la invención será preciso la utilización de diversos medios auxiliares de almacenamiento de productos, tolvas de alimentación, dispositivos de control etc, que no se han descrito ya que, siendo convencionales, serán sobradamente conocidos por el experto en la materia. El material preferiblemente utilizado ha sido el polietileno, suministrado a temperaturas entre 40°C y 90°C y con temperaturas de curado hasta a 165°C, lo que conduce a tiempos de endurecimiento menores de 3 segundos. En estas condiciones la capa de material plástico (6) depositada es de 0,4 mm de espesor, aproximadamente, lo que permite obtener los objetivos propuestos de adherencia, elasticidad y facilidad de pelado. En función del material plástico utilizado podrá variar el número y disposición de las boquillas de pulverización (1). El curado, puede, asimismo, realizarse a temperatura ambiente, en un tiempo El lugar idóneo para la instalación del sistema de proyección protector objeto de la invención dentro de la cadena de enlatado es entre la colocación de las anillas plásticas que configuran los grupos de latas de bebida (10) y el empaquetado final de las mismas en película plástica. BRIEF DESCRIPTION OF THE DRAWINGS To complement the above description and in order to help a better understanding of the features of the invention, a detailed description of a preferred embodiment will be made, based on a set of drawings that accompany this Descriptive report, and where with a merely indicative and non-limiting nature, the following has been represented. Figure I shows a sectional view of the head, coupled on top of the can. Figure 2 shows a sectional view of the head, with the cleaning cylinder in the low position. Figure 3 shows a sectional view of the head removed from the can, on which the protective device can be seen in the form of a layer of plastic material already made. In these figures the numerical references correspond to the following parts and elements: 1. Spray nozzles. 2. Food. 3. Blow duct 4. Recovery duct. 5. Heating element. 6. Layer of plastic material. 7. Cylinder cleaner. 8. Sealing means. 9. Camera. 10. Can of drink. 11. Conical surface. 12. Ring. 13. Head. DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT As can be seen in Figure 3, the protective device for beverage cans (10) consists of a layer of plastic material (6), perfectly adhered and adapted to the upper surface of the beverage can (10 ), covering the opening elements such as the ring (12), and extending over a conical surface (11) without exceeding its lower edge. In this way the upper surface of the beverage can (10), which contains the future opening for consumption, remains clean of any type of dirt until the moment of its use, when it is enough to pull the layer of plastic material (6) so that it is detached, and that due to its peelable characteristic it can be removed without leaving residues. In order to carry out the protection device of the invention just described, a consistent apparatus is available, as can be seen in figures 1, 2 and 3, in a head (13), with a cylindrical interior surface, which when applied against The beverage can (10) configures a chamber (9) that is completely closed thanks to the action of sealing means (8). These preferably consist of simple rubber o-rings. Inside the chamber (9) a plurality of spray nozzles (1) are arranged to project the plastic material that is received through a feed line (2) onto the beverage can (10), presenting the head (13) blow ducts (3) and recovery ducts (4). Finally, a heating element (5) is arranged on the inner cylindrical surface of the head (13), this surface being capable of being swept by a cleaning cylinder (7) that moves axially and concentrically thereto. The necessary hydraulic or pneumatic displacement means have not been represented, both of the head (13) with respect to the beverage can (10) and of the cleaning cylinder (7) with respect to the head itself (13), which are conventional and well known by The subject matter expert. The method of realization of the protection device object of the invention comprises the steps of: - Cleaning; consisting of the injection of compressed air through blow ducts (3), dried by the heating element (5) and aspirated from the residue through the recovery ducts (4). -Projection of the plastic material through a plurality of spray nozzles (1). - Recovery of the non-adhered plastic material through the recovery ducts (4), for later use. - Curing of the layer of plastic material (6) by heat input by the heating element (5) - Sterilization of the pores that may have remained between the layer of plastic material (6) and the surface of the beverage can (10 ) by ultraviolet radiation. As for the industrial realization of the object of the invention, it will be necessary to use various auxiliary means for storing products, feed hoppers, control devices etc, which have not been described since, being conventional, they will be well known by the expert in the matter. The material preferably used has been polyethylene, supplied at temperatures between 40 ° C and 90 ° C and with curing temperatures up to 165 ° C, which leads to hardening times of less than 3 seconds. Under these conditions the layer of plastic material (6) deposited is approximately 0.4 mm thick, which allows to obtain the proposed objectives of adhesion, elasticity and ease of peeling. Depending on the plastic material used, the number and arrangement of the spray nozzles (1) may vary. Curing can also be carried out at room temperature, in a time. The ideal place for the installation of the protective projection system object of the invention within the canning chain is between the placement of the plastic rings that make up the groups of cans of drink (10) and their final packaging in plastic film.

Claims

REIVINDICACIONES
..- Dispositivo de protección para latas de bebida (10) caracterizado por comprender una capa de material plástico (6), pelable, adherida sobre la superficie superior de la lata de bebida(1Q). 2.- Dispositivo de protección para latas de bebida (10) de acuerdo con la reivindicación 1 , caracterizado porque el material plástico es polietileno. 3.- Dispositivo de protección para latas de bebida (10) de acuerdo con la reivindicación 2, caracterizado porque el espesor de la capa de polietileno es de 0,4 mm. 4.- Dispositivo de protección para latas de bebida (10) de acuerdo con la reivindicación 1, caracterizado porque en el caso de que la lata (10) presente una superficie cónica (11), la capa de material plástico (6) no llega a la arista inferior de dicha superficie cónica (11). 5.- Aparato para realizar un dispositivo de protección para latas de bebida (10) caracterizado por comprender - un cabezal (13) provisto de una superficie cilindrica interior que configura una cámara (9), boquillas de pulverización (1), conductos de soplado y aspiración (3) y conductos de recuperación (4). - un elemento de calefacción (5) dispuesto en la superficie cilindrica interior del cabezal (13). - medios de estanqueidad (8) dispuestos en el borde interior de la superficie cilindrica interior del cabezal (13). - un cilindro limpiador (7) concéntrico con la superficie cilindrica interior del cabezal (13), respecto a la que puede desplazarse axialmente. - medios de desplazamiento del cabezal (13) respecto a la lata (10) y del cilindro limpiador (7) respecto al propio cabezal (13). 6.- Aparato para realizar un dispositivo de protección para latas de bebida (10) de acuerdo con la reivindicación 5, caracterizado porque los medios de estanqueidad (8) consisten en juntas tóricas de caucho. 7.- Método de ejecución de un dispositivo de protección para latas de bebida (10) caracterizado por comprender las etapas de; a) limpieza, consistente en la inyección de aire comprimido a través de conductos de soplado (3), secado mediante aportación de calor de un elemento calefactor (5) y aspirado del residuo a través de conductos de recuperación (4), b) proyección de material plástico a través de una pluralidad de boquillas de pulverización (1), c) recuperación del material plástico no adherido a la lata (10) a través de conductos de recuperación (4), d) curado de la capa de material plástico (6) proyectada 8- Método de ejecución de un dispositivo de protección para latas de bebida (10) de acuerdo con la reivindicación 7, caracterizado porque el material plástico pulverizado en la etapa de proyección es polietileno...- Protective device for beverage cans (10) characterized by comprising a layer of plastic material (6), peelable, adhered on the upper surface of the beverage can (1Q). 2. Protection device for beverage cans (10) according to claim 1, characterized in that the plastic material is polyethylene. 3. Protection device for beverage cans (10) according to claim 2, characterized in that the thickness of the polyethylene layer is 0.4 mm. 4. Protection device for beverage cans (10) according to claim 1, characterized in that in the case that the can (10) has a conical surface (11), the layer of plastic material (6) does not reach to the lower edge of said conical surface (11). 5.- Apparatus for carrying out a protection device for beverage cans (10) characterized by comprising - a head (13) provided with an inner cylindrical surface that configures a chamber (9), spray nozzles (1), blow ducts and aspiration (3) and recovery ducts (4). - a heating element (5) disposed on the inner cylindrical surface of the head (13). - sealing means (8) arranged on the inner edge of the inner cylindrical surface of the head (13). - a cleaning cylinder (7) concentric with the inner cylindrical surface of the head (13), with respect to which it can move axially. - means for displacement of the head (13) with respect to the can (10) and of the cleaning cylinder (7) with respect to the head itself (13). 6. Apparatus for making a protection device for beverage cans (10) according to claim 5, characterized in that the sealing means (8) consist of rubber o-rings. 7.- Method of execution of a protection device for beverage cans (10) characterized by understanding the steps of; a) cleaning, consisting of the injection of compressed air through blow ducts (3), drying by means of heat input from a heating element (5) and aspiration of the residue through recovery ducts (4), b) projection of plastic material through a plurality of spray nozzles (1), c) recovery of the plastic material not adhered to the can ( 10) through recovery ducts (4), d) curing of the projected plastic layer (6) 8- Method of execution of a protection device for beverage cans (10) according to claim 7, characterized because the plastic material sprayed in the projection stage is polyethylene.
9.- Método de ejecución de un dispositivo de protección para latas de bebida (10) de acuerdo con la reivindicación 7, caracterizado porque la etapa de curado se realiza mediante aportación de calor de un elemento calefactor (5). 10.- Método de ejecución de un dispositivo de protección de latas de bebida (10) de acuerdo con la reivindicación 7, caracterizado porque la etapa de curado se realiza a temperatura ambiente. 11.- Método de ejecución de un dispositivo de protección de latas de bebida (10) de acuerdo con la reivindicación 7, caracterizado porque se añade una etapa de esterilización mediante radiación ultravioleta. 9. Method of execution of a protection device for beverage cans (10) according to claim 7, characterized in that the curing step is carried out by heat input of a heating element (5). 10. Method of execution of a protection device for beverage cans (10) according to claim 7, characterized in that the curing step is carried out at room temperature. 11. Method of execution of a protection device for beverage cans (10) according to claim 7, characterized in that a sterilization stage is added by ultraviolet radiation.
PCT/ES2004/000358 2003-08-01 2004-08-02 Protective device for beverage cans, production method and devices for the production thereof WO2005012105A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ESP200301847 2003-08-01
ES200301847A ES2249949B1 (en) 2003-08-01 2003-08-01 SEALING DEVICE FOR DRINK CANS AND EXECUTION METHOD.

Publications (2)

Publication Number Publication Date
WO2005012105A2 true WO2005012105A2 (en) 2005-02-10
WO2005012105A3 WO2005012105A3 (en) 2005-07-21

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PCT/ES2004/000358 WO2005012105A2 (en) 2003-08-01 2004-08-02 Protective device for beverage cans, production method and devices for the production thereof

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ES (1) ES2249949B1 (en)
WO (1) WO2005012105A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2467612A (en) * 2009-02-03 2010-08-11 Douglas Hussey Lid with protective cover
WO2011110700A1 (en) * 2010-03-08 2011-09-15 Aragonesa De Desarrollos E Innovaciones, S.L. Device for protecting drinks cans
IT201600086767A1 (en) * 2016-08-23 2018-02-23 Uberto Ravazzoni HYGIENIC PROTECTION DEVICE FOR A CAN AND ITS APPLICATION METHOD

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3446346A (en) * 1966-11-30 1969-05-27 Keith W Burge Package of cans
US3488911A (en) * 1965-09-23 1970-01-13 Illinois Tool Works Method and apparatus for producing a covered top container
EP0578084A1 (en) * 1992-07-08 1994-01-12 Nordson Corporation Method and apparatus for applying coatings to bottles
ES2129228T3 (en) * 1994-10-12 1999-06-01 Grusan Di Sandrin Giannino & C PROCEDURE FOR HERMETICALLY AND HYGIENICALLY CLOSING CONTAINERS OF BEVERAGES AND CONTAINERS OBTAINED IN SUCH WAY.
WO1999067144A2 (en) * 1998-06-24 1999-12-29 Giuseppe Arturelli Hygiene cover for beverage containers
DE10159150A1 (en) * 2001-12-01 2003-06-18 Juergen Grotjahn Can for foods and drinks, etc. has detachable biodegradable cover over removable lid part to prevent contamination of contents

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3488911A (en) * 1965-09-23 1970-01-13 Illinois Tool Works Method and apparatus for producing a covered top container
US3446346A (en) * 1966-11-30 1969-05-27 Keith W Burge Package of cans
EP0578084A1 (en) * 1992-07-08 1994-01-12 Nordson Corporation Method and apparatus for applying coatings to bottles
ES2129228T3 (en) * 1994-10-12 1999-06-01 Grusan Di Sandrin Giannino & C PROCEDURE FOR HERMETICALLY AND HYGIENICALLY CLOSING CONTAINERS OF BEVERAGES AND CONTAINERS OBTAINED IN SUCH WAY.
WO1999067144A2 (en) * 1998-06-24 1999-12-29 Giuseppe Arturelli Hygiene cover for beverage containers
DE10159150A1 (en) * 2001-12-01 2003-06-18 Juergen Grotjahn Can for foods and drinks, etc. has detachable biodegradable cover over removable lid part to prevent contamination of contents

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2467612A (en) * 2009-02-03 2010-08-11 Douglas Hussey Lid with protective cover
WO2011110700A1 (en) * 2010-03-08 2011-09-15 Aragonesa De Desarrollos E Innovaciones, S.L. Device for protecting drinks cans
IT201600086767A1 (en) * 2016-08-23 2018-02-23 Uberto Ravazzoni HYGIENIC PROTECTION DEVICE FOR A CAN AND ITS APPLICATION METHOD

Also Published As

Publication number Publication date
ES2249949B1 (en) 2007-06-01
ES2249949A1 (en) 2006-04-01
WO2005012105A3 (en) 2005-07-21

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