WO2017060542A1 - Opening/closing device for flexible disposable container - Google Patents

Opening/closing device for flexible disposable container Download PDF

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Publication number
WO2017060542A1
WO2017060542A1 PCT/ES2015/000134 ES2015000134W WO2017060542A1 WO 2017060542 A1 WO2017060542 A1 WO 2017060542A1 ES 2015000134 W ES2015000134 W ES 2015000134W WO 2017060542 A1 WO2017060542 A1 WO 2017060542A1
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WO
WIPO (PCT)
Prior art keywords
opening
flap
closing
closing flap
base sheet
Prior art date
Application number
PCT/ES2015/000134
Other languages
Spanish (es)
French (fr)
Inventor
José Gamundi Masque
Original Assignee
Relieves Egara, Sl
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
Application filed by Relieves Egara, Sl filed Critical Relieves Egara, Sl
Priority to PCT/ES2015/000134 priority Critical patent/WO2017060542A1/en
Publication of WO2017060542A1 publication Critical patent/WO2017060542A1/en

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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
    • B65D83/00Containers or packages with special means for dispensing contents
    • B65D83/08Containers or packages with special means for dispensing contents for dispensing thin flat articles in succession

Definitions

  • the present invention concerns an opening / closing device for a disposable flexible container, applicable in particular to wet wipe containers, in which the moisture of the wipes must be preserved allowing repeated uses, that is, containers provided with an opening device / closing capable of being repeatedly opened and closed and capable of providing airtightness when closed.
  • the invention is equally applicable to packages for other products, such as dried fruit bags, powdered baby food sachets, chewing gum packages, pasta dishes, and in general to those containers containing products that can be partially consumed in successive occasions and where the remaining product after each partial consumption needs to be stored tightly in the container until it has been completely used up.
  • EP 2202176 A1 discloses an opening / closing device for a disposable flexible container comprising a flexible base sheet, which in use is adhered to a flexible wall of the disposable container covering a dispensing opening formed therein.
  • This base sheet has contour cuts that define an opening / closing flap, which is connected to the rest of the base sheet by a fold line and has a bottom surface provided with removable adhesive, so that the opening flap / closure is movable between a closed position, in which the opening / closing flap is adhered to an area of the flexible container around the dispensing opening, closing it, and an open position, in which the opening / closing flap It is folded by the fold line and raised providing free access to the dispensing opening.
  • the base sheet comprises two layers, one bottom and one top, laminated, and the fold line is formed by a continuous cut that completely affects the bottom layer of the base sheet but not the top layer.
  • WO 2015056061 discloses an opening / closing device for a disposable flexible container similar to that of the aforementioned document EP 2202176 A1, where the base sheet can comprise two or three laminated layers of synthetic polymer material, and where the fold line between the opening / closing flap and the base sheet comprises a plurality of mutually aligned discontinuous cuts that affect only two of the three layers of the sheet or the entire thickness of the sheet.
  • US 6026953 A discloses an opening / closing device for a disposable flexible container similar to that of said document EP 2202176 A1, where the base sheet can comprise a single layer or several laminated layers of synthetic polymer material, and where the line Folding between the opening / closing flap and the base sheet comprises a thinning of the thickness of the sheet obtained by pressure.
  • a drawback of the background cited above is that they need to include an additional seal element that breaks when the opening / closing flap is opened for the first time in order to provide tamper evidence indicating whether the opening / closing flap It has already been opened previously.
  • an opening / closing device for disposable flexible packaging which comprises a base sheet having a bottom surface provided with adhesive to be adhered to a wall of the disposable flexible container covering an opening of dispensing formed therein.
  • the base sheet has one or more flap cut lines defining an opening / closing flap and a frame portion that at least partially surrounds the opening / closing flap.
  • the opening / closing flap is connected to the frame portion by a fold line, so that the opening / closing flap is movable between a closed position, in which the opening / closing flap is coplanar with the portion of frame, and an open position, in which the opening / closing flap is folded by the fold line.
  • the frame portion is permanently adhered to the disposable flexible container while the opening / closing flap, when in the closed position, is adhered to an area of the disposable flexible container around the dispensing opening, and when in In the open position, the opening / closing flap is raised providing free access to the dispensing opening.
  • the base sheet comprises a single layer made of a synthetic polymeric material and the one or more flap cut lines are formed by incomplete cuts that initially affect almost all but not all. the thickness of the base sheet or by a few cuts mutually aligned discontinuous, and where such incomplete cuts or mutually aligned discontinuous cuts are completed or finished breaking when the opening / closing flap is first opened.
  • the one or more flap cut lines that separate the opening / closing flap of the frame portion act as a guarantee seal and provide evidence of tampering without disturbing the normal operation of the opening / closing device and without the need of including an additional seal element in the opening / closing device.
  • the base sheet comprises a single layer makes possible the reliable implementation of said incomplete cuts, which would be very difficult to make on a base sheet formed by several laminated layers since, in such case, each of the multiple layers would have a comparatively smaller thickness than the thickness of a single layer, and incomplete cuts should completely affect one of the outer layers and all intermediate layers, if any, and only partially affect the other outer layer comparatively very thin.
  • the frame portion includes a retention cut located on one side of the fold line opposite the opening / closing flap and an adhesive-free retention area adjacent to the retention cut on the bottom surface of the sheet base, and the opening / closing flap has a prominent contour portion insertable in the adhesive-free retention area through the retention cut when the opening / closing flap is in the open position.
  • the opening / closing flap when the prominent contour portion of the opening / closing flap is inserted into the adhesive-free retention area through the retention cut, the opening / closing flap is retained in the open position at an angle of approximately 180 degrees with the frame portion, thereby counteracting the tendency of the opening / closing flap to close spontaneously from the open position to the closed position due to poor flexibility of the bending line.
  • an outline of the opening / closing flap defined by the one or more flap cutting lines has a generally rectangular shape with rounded corners, and the prominent contour portion of the opening / closing flap is constituted by one of such rounded corners.
  • the retention cut is oriented in an inclined direction relative to the sides of the rectangular shape.
  • the opening / closing flap could have an outline of any other shape as long as it had a prominent contour portion. properly sized and positioned to be inserted in the adhesive-free retention area through the retention cut.
  • the opening / closing flap has a gripping tongue located on one side of the opening / closing flap opposite the fold line, and the gripping tongue has an adhesive free grip area on the bottom surface of the base sheet for easy manual grip of the grip tab and the lifting of the opening / closing flap.
  • the adhesive-free grip area extends into an area of the opening / closing flap adjacent to the one or more flap cut lines on both sides of the grip tab.
  • the frame portion is interrupted by the grip tab.
  • the synthetic polymeric material that constitutes the sole layer of the base sheet is, for example, polyethylene, polypropylene, polyester, polyamide, or polyvinyl chloride.
  • the bending line is defined by a plurality of mutually aligned discontinuous cuts that affect the entire thickness of the base sheet.
  • Fig. 1 is a top plan view of an opening / closing device for disposable flexible container according to an embodiment of the present invention in a closed position;
  • Fig. 2 is a bottom plan view of the opening / closing device of Fig. 1 in the closed position
  • Fig. 3 is a top plan view of the opening / closing device of Fig. 1 in an open position
  • Fig. 4 is a cross-sectional view of an enlarged detail illustrating a flap cut line of the opening / closing device of Fig. 1 which acts as a guarantee seal according to one embodiment;
  • Fig. 5 is a cross-sectional view similar to Fig. 4 illustrating the broken warranty seal providing evidence of tampering;
  • Y Fig. 6 is a plan view of an enlarged detail illustrating a flap cut line of the opening / closing device of Fig. 1 which acts as a guarantee seal according to another embodiment.
  • a flap cut line of the opening / closing device of Fig. 1 which acts as a guarantee seal according to another embodiment.
  • the opening / closing device of the present invention comprises, in accordance with the embodiment shown in Figs. 1 to 3, a base sheet 1 comprising a single layer made of a synthetic polymeric material, such as, for example, polyethylene, polypropylene, polyester, polyamide, or polyvinyl chloride, optionally transparent.
  • the base sheet 1 has a bottom surface provided with an adhesive 5 (indicated by shading in Figs. 2 and 3).
  • the base sheet 1 has flap cut lines 8 defining an opening / closing flap 2 and a frame portion 7.
  • the opening / closing flap 2 is connected to the frame portion 7 by a fold line 6, and the frame portion 7 partly surrounds the opening / closing flap 2.
  • the fold line 6 is defined by a plurality of mutually aligned discontinuous cuts.
  • the opening / closing flap 2 is movable between a closed position (Figs. 1 and 2), in which the opening / closing flap 2 is coplanar with the frame portion 7, and an open position (Fig. 3), in which the opening / closing flap 2 is folded by the fold line 6.
  • the base sheet 1 can be supplied with the bottom surface, where the adhesive 5 is located, covered with a sheet of non-stick protective paper (not shown). In an operative situation, the base sheet 1 is adhered by means of the adhesive 5 to a wall of the disposable flexible container (not shown) covering a dispensing opening formed therein.
  • the frame portion 7 is permanently adhered to the wall of the disposable flexible container (not shown) while the opening / closing flap 2, when in the closed position (Figs. 1 and 2), is adhered to a area of the wall of the disposable flexible container around the dispensing opening so that the dispensing opening is covered and closed by the opening / closing flap 2, and when in the open position (Fig. 3), the flap of opening / closing 2 is raised providing free access to the dispensing opening.
  • the aforementioned flap cut lines 8 defining the opening / closing flap 2 have curved end portions 8a at their ends adjacent to the fold line 6, convex in relation to the open / close flap 2 and mutually facing each other, which extend out of the opening / closing flap 2.
  • the fold line 6 has opposite ends that connect to the curved end portions 8a of the flap cut lines 8. In the illustrated example, the fold line 6 is substantially tangent to both curved end portions 8a.
  • the opening / closing flap 2 has a grip tab 4 located on the side opposite to the fold line 6, and this grip tab 4 has an adhesive free grip area 4a (Figs. 2 and 3) on the bottom surface of the base sheet 1.
  • the adhesive free grip area 4a extends over a narrow area of the opening / closing flap 2 adjacent to the flap cutting lines 8 on both sides of the grip tab 4 to facilitate the opening of the opening of the opening / closing flap 2 and to avoid tearing at the junction between the tongue of the grip 4 and the opening flap closure 2.
  • the frame portion 7 does not completely surround the opening / closing flap 2 since it is interrupted by the grip tab 4.
  • the flap cut lines 8 separating the opening / closing flap 2 of the frame portion 7 comprise incomplete cuts that initially affect almost all but not the entire thickness of the base sheet 1 (Fig. 4 ). These incomplete cuts are completed or finished breaking when the opening / closing flap 2 is opened for the first time (Fig. 5), for example by pulling up on the tongue 4, so that the cutting lines flap 8 acts as a guarantee seal and provides evidence of tampering without disturbing the normal operation of the opening / closing device and without the need to include an additional seal element in the opening / closing device.
  • Fig. 6 shows an alternative embodiment in which the flap cut lines 8 comprise mutually aligned discontinuous cuts that initially affect the entire thickness of the base sheet 1 but are separated from each other by uncut spaces, where each One of the discontinuous cuts has a length A approximately equal to a length B of the uncut spaces between two adjacent discontinuous cuts.
  • the frame portion 7 has a retention cut 3 formed on one side of the fold line 6 opposite the opening / closing flap 2, and on the bottom surface of the base sheet 1 there is provided a retention area free of adhesive 3a adjacent to retention cut 3.
  • the opening / closing flap 2 has a prominent contour portion 2a which, when the opening / closing flap 2 is in the open position at an angle of approximately 180 degrees with the frame portion 7, can be inserted in the adhesive-free retention area 3a through the retention cut 3, which allows the opening / closing flap 2 to be retained in the open position.
  • the contour of the opening / closing flap 2 defined by the one or more flap cutting lines 8 has a generally rectangular shape with rounded corners, and one of these rounded corners constitutes said contour portion prominent 2a of the opening / closing flap 2. Accordingly, the retaining cut 3 is arranged in an inclined position relative to the sides of the rectangular shape of the opening / closing flap 2.
  • the frame portion 7 has an outline exterior 9 which also has a generally rectangular shape with rounded corners.

Abstract

The invention relates to an opening/closing device for a flexible disposable container, comprising a base sheet (1) having a lower surface provided with adhesive (5) and one or more cutting lines (8) of a flap, which define an opening/closing flap (2) surrounded at least partially by a structural portion (7). The opening/closing flat (2) is connected to the structural portion (7) by a folding line (6) and can be moved between a closed position, in which it is coplanar with the structural portion (7), and an open position, in which the opening/closing flap (2) is folded via the folding line (6). The base sheet (1) comprises a single layer and the cutting lines (8) of the flap comprise incomplete cuts which initially do not affect the entire thickness of the base sheet (1) and which are completed when the opening/closing flap (2) is opened for the first time.

Description

DISPOSITIVO DE APERTURA CIERRE PARA ENVASE FLEXIBLE DESECHABLE  OPENING CLOSURE DEVICE FOR DISPOSABLE FLEXIBLE CONTAINER
Campo de la técnica Technical field
La presente invención concierne a un dispositivo de apertura/cierre para un envase flexible desechable, aplicable en particular a envases de toallitas húmedas, en los que debe preservarse la humedad de las toallitas posibilitando repetidas utilizaciones, es decir, envases dotados de un dispositivo de apertura/cierre capaz de ser abierto y cerrado repetidas veces y capaz de proporcionar hermeticidad cuando está cerrado.  The present invention concerns an opening / closing device for a disposable flexible container, applicable in particular to wet wipe containers, in which the moisture of the wipes must be preserved allowing repeated uses, that is, containers provided with an opening device / closing capable of being repeatedly opened and closed and capable of providing airtightness when closed.
La invención es igualmente aplicable a envases para otros productos, como por ejemplo bolsas de frutos secos, sobres de papilla infantil en polvo, paquetes de chicles, envases de pasta de cocina, y en general a aquellos envases conteniendo productos que pueden ser consumidos parcialmente en sucesivas ocasiones y donde el producto remanente después de cada consumición parcial precisa ser guardado herméticamente en el envase hasta que se haya agotado por completo.  The invention is equally applicable to packages for other products, such as dried fruit bags, powdered baby food sachets, chewing gum packages, pasta dishes, and in general to those containers containing products that can be partially consumed in successive occasions and where the remaining product after each partial consumption needs to be stored tightly in the container until it has been completely used up.
Antecedentes de la invención Background of the invention
El documento EP 2202176 A1 da a conocer un dispositivo de apertura/cierre para un envase flexible desechable que comprende una lámina base flexible, la cual en uso está adherida a una pared flexible del envase desechable cubriendo una abertura de dispensación formada en la misma. Esta lámina base tiene unos cortes de contorno que definen una solapa de apertura/cierre, la cual está conectada al resto de la lámina base por una línea de doblez y tiene una superficie inferior provista de adhesivo removible, de manera que la solapa de apertura/cierre es movible entre una posición cerrada, en la que la solapa de apertura/cierre está adherida a un área del envase flexible alrededor de la abertura de dispensación, cerrando la misma, y una posición abierta, en la que la solapa de apertura/cierre está doblada por la línea de doblez y levantada proporcionando un libre acceso a la abertura de dispensación. La lámina base comprende dos capas, una inferior y otra superior, laminadas, y la línea de doblez está formada por un corte continuo que afecta completamente la capa inferior de la lámina base pero no la capa superior.  EP 2202176 A1 discloses an opening / closing device for a disposable flexible container comprising a flexible base sheet, which in use is adhered to a flexible wall of the disposable container covering a dispensing opening formed therein. This base sheet has contour cuts that define an opening / closing flap, which is connected to the rest of the base sheet by a fold line and has a bottom surface provided with removable adhesive, so that the opening flap / closure is movable between a closed position, in which the opening / closing flap is adhered to an area of the flexible container around the dispensing opening, closing it, and an open position, in which the opening / closing flap It is folded by the fold line and raised providing free access to the dispensing opening. The base sheet comprises two layers, one bottom and one top, laminated, and the fold line is formed by a continuous cut that completely affects the bottom layer of the base sheet but not the top layer.
El documento WO 2015056061 da a conocer un dispositivo de apertura/cierre para un envase flexible desechable similar al del citado documento EP 2202176 A1 , donde la lámina base puede comprender dos o tres capas laminadas de material polímero sintético, y donde la línea de doblez entre la solapa de apertura/cierre y la lámina base comprende una pluralidad de cortes discontinuos mutuamente alineados que afectan sólo a dos de las tres capas de la lámina o a todo el grosor de la lámina. El documento US 6026953 A da a conocer un dispositivo de apertura/cierre para un envase flexible desechable similar al del citado documento EP 2202176 A1 , donde la lámina base puede comprender una única capa o varias capas laminadas de material polímero sintético, y donde la línea de doblez entre la solapa de apertura/cierre y la lámina base comprende un adelgazamiento del grosor de la lámina obtenido por presión. WO 2015056061 discloses an opening / closing device for a disposable flexible container similar to that of the aforementioned document EP 2202176 A1, where the base sheet can comprise two or three laminated layers of synthetic polymer material, and where the fold line between the opening / closing flap and the base sheet comprises a plurality of mutually aligned discontinuous cuts that affect only two of the three layers of the sheet or the entire thickness of the sheet. US 6026953 A discloses an opening / closing device for a disposable flexible container similar to that of said document EP 2202176 A1, where the base sheet can comprise a single layer or several laminated layers of synthetic polymer material, and where the line Folding between the opening / closing flap and the base sheet comprises a thinning of the thickness of the sheet obtained by pressure.
Un inconveniente de los antecedentes citados más arriba es que necesitan incluir un elemento de precinto adicional que se rompa al ser abierta por primera vez la solapa de apertura/cierre con el fin de proporcionar una evidencia de manipulación que indique si la solapa de apertura/cierre ya ha sido abierta anteriormente.  A drawback of the background cited above is that they need to include an additional seal element that breaks when the opening / closing flap is opened for the first time in order to provide tamper evidence indicating whether the opening / closing flap It has already been opened previously.
Otro inconveniente de los antecedentes citados más arriba es que la solapa de apertura/cierre, cuando es dejada en la posición abierta, tiene tendencia a cerrarse por sí sola debido a la escasa flexibilidad de la línea de doblez, lo que entorpece las operaciones para extraer los productos del envase flexible desechable a través de la abertura de dispensación.  Another drawback of the background cited above is that the opening / closing flap, when left in the open position, has a tendency to close on its own due to the poor flexibility of the bending line, which hinders the operations to extract the products of the disposable flexible container through the dispensing opening.
Exposición de la invención Exhibition of the invention
La presente invención contribuye a mitigar el anterior y otros inconvenientes aportando un dispositivo de apertura/cierre para envase flexible desechable, que comprende una lámina base que tiene una superficie inferior provista de adhesivo para ser adherida a una pared del envase flexible desechable cubriendo una abertura de dispensación formada en la misma. La lámina base tiene una o más líneas de corte de solapa que definen una solapa de apertura/cierre y una porción de marco que rodea al menos en parte a la solapa de apertura/cierre. La solapa de apertura/cierre está conectada a la porción de marco por una línea de doblez, de modo que la solapa de apertura/cierre es movible entre una posición cerrada, en la que la solapa de apertura/cierre está coplanaria con la porción de marco, y una posición abierta, en la que la solapa de apertura/cierre está doblada por la línea de doblez.  The present invention helps to mitigate the above and other inconveniences by providing an opening / closing device for disposable flexible packaging, which comprises a base sheet having a bottom surface provided with adhesive to be adhered to a wall of the disposable flexible container covering an opening of dispensing formed therein. The base sheet has one or more flap cut lines defining an opening / closing flap and a frame portion that at least partially surrounds the opening / closing flap. The opening / closing flap is connected to the frame portion by a fold line, so that the opening / closing flap is movable between a closed position, in which the opening / closing flap is coplanar with the portion of frame, and an open position, in which the opening / closing flap is folded by the fold line.
En uso, la porción de marco está permanentemente adherida al envase flexible desechable mientras que la solapa de apertura/cierre, cuando está en la posición cerrada, está adherida a un área del envase flexible desechable alrededor de la abertura de dispensación, y cuando está en la posición abierta, la solapa de apertura/cierre está levantada proporcionando un libre acceso a la abertura de dispensación.  In use, the frame portion is permanently adhered to the disposable flexible container while the opening / closing flap, when in the closed position, is adhered to an area of the disposable flexible container around the dispensing opening, and when in In the open position, the opening / closing flap is raised providing free access to the dispensing opening.
En el dispositivo de apertura/cierre de la presente invención, la lámina base comprende una única capa hecha de un material polimérico sintético y las una o más líneas de corte de solapa están formados por unos cortes incompletos que inicialmente afectan la práctica totalidad pero no todo el grosor de la lámina base o por unos cortes discontinuos mutuamente alineados, y donde tales cortes incompletos o cortes discontinuos mutuamente alineados se completan o terminan de romper cuando la solapa de apertura/cierre es abierta por primera vez. In the opening / closing device of the present invention, the base sheet comprises a single layer made of a synthetic polymeric material and the one or more flap cut lines are formed by incomplete cuts that initially affect almost all but not all. the thickness of the base sheet or by a few cuts mutually aligned discontinuous, and where such incomplete cuts or mutually aligned discontinuous cuts are completed or finished breaking when the opening / closing flap is first opened.
Así, las una o más líneas de corte de solapa que separan la solapa de apertura/cierre de la porción de marco actúan como un precinto de garantía y proporcionan una evidencia de manipulación sin alterar el funcionamiento normal del dispositivo de apertura/cierre y sin necesidad de incluir un elemento de precinto adicional en el dispositivo de apertura/cierre.  Thus, the one or more flap cut lines that separate the opening / closing flap of the frame portion act as a guarantee seal and provide evidence of tampering without disturbing the normal operation of the opening / closing device and without the need of including an additional seal element in the opening / closing device.
El hecho de que la lámina base comprenda una única capa hace posible la implementación fiable de los mencionados cortes incompletos, los cuales serían muy difíciles de efectuar en una lámina base formada por varias capas laminadas dado que, en tal caso, cada una de las múltiples capas tendría un grosor comparativamente menor que el grosor de una única capa, y los cortes incompletos deberían afectar completamente una de las capas exteriores y todas las capas intermedias, en el caso de que las hubiera, y afectar sólo parcialmente la otra capa exterior comparativamente muy delgada.  The fact that the base sheet comprises a single layer makes possible the reliable implementation of said incomplete cuts, which would be very difficult to make on a base sheet formed by several laminated layers since, in such case, each of the multiple layers would have a comparatively smaller thickness than the thickness of a single layer, and incomplete cuts should completely affect one of the outer layers and all intermediate layers, if any, and only partially affect the other outer layer comparatively very thin.
En una realización, la porción de marco incluye un corte de retención situado en un lado de la línea de doblez opuesto a la solapa de apertura/cierre y un área de retención libre de adhesivo adyacente al corte de retención en la superficie inferior de la lámina base, y la solapa de apertura/cierre tiene una porción de contorno prominente insertable en la área de retención libre de adhesivo a través del corte de retención cuando la solapa de apertura/cierre está en la posición abierta.  In one embodiment, the frame portion includes a retention cut located on one side of the fold line opposite the opening / closing flap and an adhesive-free retention area adjacent to the retention cut on the bottom surface of the sheet base, and the opening / closing flap has a prominent contour portion insertable in the adhesive-free retention area through the retention cut when the opening / closing flap is in the open position.
Así, cuando la porción de contorno prominente de la solapa de apertura/cierre está insertada en la área de retención libre de adhesivo a través del corte de retención, la solapa de apertura/cierre queda retenida en la posición abierta formando un ángulo de aproximadamente 180 grados con la porción de marco, contrarrestando con ello la tendencia de la solapa de apertura/cierre a cerrarse espontáneamente desde la posición abierta a la posición cerrada debido a una escasa flexibilidad de la línea de doblez.  Thus, when the prominent contour portion of the opening / closing flap is inserted into the adhesive-free retention area through the retention cut, the opening / closing flap is retained in the open position at an angle of approximately 180 degrees with the frame portion, thereby counteracting the tendency of the opening / closing flap to close spontaneously from the open position to the closed position due to poor flexibility of the bending line.
En una realización, un contorno de la solapa de apertura/cierre definido por las una o más líneas de corte de solapa tiene una forma en general rectangular con unas esquinas redondeadas, y la porción de contorno prominente de la solapa de apertura/cierre está constituida por una de tales esquinas redondeadas. En tal caso, el corte de retención está orientado en una dirección inclinada respecto a los lados de la forma rectangular.  In one embodiment, an outline of the opening / closing flap defined by the one or more flap cutting lines has a generally rectangular shape with rounded corners, and the prominent contour portion of the opening / closing flap is constituted by one of such rounded corners. In such a case, the retention cut is oriented in an inclined direction relative to the sides of the rectangular shape.
Alternativamente, la solapa de apertura/cierre podría tener un contorno de cualquier otra forma siempre que tuviera una porción de contorno prominente dimensionada y posicionada adecuadamente para insertarse en el área de retención libre de adhesivo a través del corte de retención. Alternatively, the opening / closing flap could have an outline of any other shape as long as it had a prominent contour portion. properly sized and positioned to be inserted in the adhesive-free retention area through the retention cut.
Preferiblemente, la solapa de apertura/cierre tiene una lengüeta de agarre situada en un lado de la solapa de apertura/cierre opuesto a la línea de doblez, y la lengüeta de agarre tiene un área de agarre libre de adhesivo en la superficie inferior de la lámina base para facilitar el agarre manual de la lengüeta de agarre y el levantamiento de la solapa de apertura/cierre. Preferiblemente, el área de agarre libre de adhesivo se extiende en un área de la solapa de apertura/cierre adyacente a las una o más líneas de corte de solapa a ambos lados de la lengüeta de agarre. En una realización, la porción de marco está interrumpida por la lengüeta de agarre.  Preferably, the opening / closing flap has a gripping tongue located on one side of the opening / closing flap opposite the fold line, and the gripping tongue has an adhesive free grip area on the bottom surface of the base sheet for easy manual grip of the grip tab and the lifting of the opening / closing flap. Preferably, the adhesive-free grip area extends into an area of the opening / closing flap adjacent to the one or more flap cut lines on both sides of the grip tab. In one embodiment, the frame portion is interrupted by the grip tab.
En una realización, el material polimérico sintético que constituye la única capa de la lámina base es, por ejemplo, polietileno, polipropileno, poliéster, poliamida, o cloruro de polivinilo.  In one embodiment, the synthetic polymeric material that constitutes the sole layer of the base sheet is, for example, polyethylene, polypropylene, polyester, polyamide, or polyvinyl chloride.
En una realización preferida, la línea de doblez está definida por una pluralidad de cortes discontinuos mutuamente alineados que afectan todo el grosor de la lámina base.  In a preferred embodiment, the bending line is defined by a plurality of mutually aligned discontinuous cuts that affect the entire thickness of the base sheet.
Breve descripción de los dibujos Brief description of the drawings
Las anteriores y otras características y ventajas se comprenderán más plenamente a partir de la siguiente descripción detallada de un ejemplo de realización, el cual tiene un carácter meramente ilustrativo y no limitativo, con referencia a los dibujos que la acompañan, en los que:  The foregoing and other features and advantages will be more fully understood from the following detailed description of an exemplary embodiment, which is merely illustrative and not limiting, with reference to the accompanying drawings, in which:
la Fig. 1 es una vista en planta superior de un dispositivo de apertura/cierre para envase flexible desechable de acuerdo con una realización de la presente invención en una posición cerrada;  Fig. 1 is a top plan view of an opening / closing device for disposable flexible container according to an embodiment of the present invention in a closed position;
la Fig. 2 es una vista en planta inferior del dispositivo de apertura/cierre de la Fig. 1 en la posición cerrada;  Fig. 2 is a bottom plan view of the opening / closing device of Fig. 1 in the closed position;
la Fig. 3 es una vista en planta superior del dispositivo de apertura/cierre de la Fig. 1 en una posición abierta;  Fig. 3 is a top plan view of the opening / closing device of Fig. 1 in an open position;
la Fig. 4 es una vista en sección transversal de un detalle ampliado que ¡lustra una línea de corte de solapa del dispositivo de apertura/cierre de la Fig. 1 que actúa como un precinto de garantía según una realización;  Fig. 4 is a cross-sectional view of an enlarged detail illustrating a flap cut line of the opening / closing device of Fig. 1 which acts as a guarantee seal according to one embodiment;
la Fig. 5 es una vista en sección transversal similar a la Fig. 4 que ilustra el precinto de garantía roto proporcionando una evidencia de manipulación; y la Fig. 6 es una vista en planta de un detalle ampliado que ilustra una línea de corte de solapa del dispositivo de apertura/cierre de la Fig. 1 que actúa como un precinto de garantía según otra realización. Descripción detallada de un ejemplo de realización Fig. 5 is a cross-sectional view similar to Fig. 4 illustrating the broken warranty seal providing evidence of tampering; Y Fig. 6 is a plan view of an enlarged detail illustrating a flap cut line of the opening / closing device of Fig. 1 which acts as a guarantee seal according to another embodiment. Detailed description of an embodiment example
El dispositivo de apertura/cierre de la presente invención comprende, de acuerdo con la realización mostrada en las Figs. 1 a 3, una lámina base 1 que comprende una única capa hecha de un material polimérico sintético, tal como, por ejemplo, polietileno, polipropileno, poliéster, poliamida, o cloruro de polivinilo, opcionalmente transparente. La lámina base 1 tiene una superficie inferior provista de un adhesivo 5 (indicado mediante un sombreado en las Figs. 2 y 3).  The opening / closing device of the present invention comprises, in accordance with the embodiment shown in Figs. 1 to 3, a base sheet 1 comprising a single layer made of a synthetic polymeric material, such as, for example, polyethylene, polypropylene, polyester, polyamide, or polyvinyl chloride, optionally transparent. The base sheet 1 has a bottom surface provided with an adhesive 5 (indicated by shading in Figs. 2 and 3).
La lámina base 1 tiene unas líneas de corte de solapa 8 que definen una solapa de apertura/cierre 2 y una porción de marco 7. La solapa de apertura/cierre 2 está conectada a la porción de marco 7 por una línea de doblez 6, y la porción de marco 7 rodea en parte a la solapa de apertura/cierre 2. En la realización mostrada, la línea de doblez 6 está definida por una pluralidad de cortes discontinuos mutuamente alineados. La solapa de apertura/cierre 2 es movible entre una posición cerrada (Figs. 1 y 2), en la que la solapa de apertura/cierre 2 está coplanaria con la porción de marco 7, y una posición abierta (Fig. 3), en la que la solapa de apertura/cierre 2 está doblada por la línea de doblez 6.  The base sheet 1 has flap cut lines 8 defining an opening / closing flap 2 and a frame portion 7. The opening / closing flap 2 is connected to the frame portion 7 by a fold line 6, and the frame portion 7 partly surrounds the opening / closing flap 2. In the embodiment shown, the fold line 6 is defined by a plurality of mutually aligned discontinuous cuts. The opening / closing flap 2 is movable between a closed position (Figs. 1 and 2), in which the opening / closing flap 2 is coplanar with the frame portion 7, and an open position (Fig. 3), in which the opening / closing flap 2 is folded by the fold line 6.
La lámina base 1 se puede suministrar con la superficie inferior, donde se encuentra el adhesivo 5, cubierta con una lámina de papel antiadherente protector (no mostrada). En una situación operativa, la lámina base 1 es adherida mediante el adhesivo 5 a una pared del envase flexible desechable (no mostrado) cubriendo una abertura de dispensación formada en la misma.  The base sheet 1 can be supplied with the bottom surface, where the adhesive 5 is located, covered with a sheet of non-stick protective paper (not shown). In an operative situation, the base sheet 1 is adhered by means of the adhesive 5 to a wall of the disposable flexible container (not shown) covering a dispensing opening formed therein.
En uso, la porción de marco 7 está permanentemente adherida a la pared del envase flexible desechable (no mostrado) mientras que la solapa de apertura/cierre 2, cuando está en la posición cerrada (Figs. 1 y 2), está adherida a un área de la pared del envase flexible desechable alrededor de la abertura de dispensación de manera que la abertura de dispensación queda cubierta y cerrada por la solapa de apertura/cierre 2, y cuando está en la posición abierta (Fig. 3), la solapa de apertura/cierre 2 está levantada proporcionando un libre acceso a la abertura de dispensación.  In use, the frame portion 7 is permanently adhered to the wall of the disposable flexible container (not shown) while the opening / closing flap 2, when in the closed position (Figs. 1 and 2), is adhered to a area of the wall of the disposable flexible container around the dispensing opening so that the dispensing opening is covered and closed by the opening / closing flap 2, and when in the open position (Fig. 3), the flap of opening / closing 2 is raised providing free access to the dispensing opening.
Las mencionadas líneas de corte de solapa 8 que definen la solapa de apertura/cierre 2 tienen en sus extremos adyacentes a la línea de doblez 6 unas porciones finales curvadas 8a, convexas en relación con la solapa de apertura/cierre 2 y mutuamente enfrentadas, que se extienden hacia fuera de la solapa de apertura/cierre 2. La línea de doblez 6 tiene unos extremos opuestos que se conectan con las porciones finales curvadas 8a de las líneas de corte de solapa 8. En el ejemplo ilustrado, la línea de doblez 6 es substancialmente tangente a ambas porciones finales curvadas 8a. The aforementioned flap cut lines 8 defining the opening / closing flap 2 have curved end portions 8a at their ends adjacent to the fold line 6, convex in relation to the open / close flap 2 and mutually facing each other, which extend out of the opening / closing flap 2. The fold line 6 has opposite ends that connect to the curved end portions 8a of the flap cut lines 8. In the illustrated example, the fold line 6 is substantially tangent to both curved end portions 8a.
Para poder tirar de la solapa de apertura/cierre 2 con el fin de moverla de la posición cerrada a la posición abierta, la solapa de apertura/cierre 2 tiene una lengüeta de agarre 4 situada en un lado opuesto a la línea de doblez 6, y esta lengüeta de agarre 4 tiene un área de agarre libre de adhesivo 4a (Figs. 2 y 3) en la superficie inferior de la lámina base 1. Preferiblemente, el área de agarre libre de adhesivo 4a se extiende en un área estrecha de la solapa de apertura/cierre 2 adyacente a las líneas de corte de solapa 8 a ambos lados de la lengüeta de agarre 4 para facilitar el inicio de la apertura de la solapa de apertura/cierre 2 y para evitar desgarros en la unión entre la lengüeta de agarre 4 y la solapa de apertura cierre 2. En la realización mostrada, la porción de marco 7 no rodea por completo la solapa de apertura/cierre 2 puesto que está interrumpida por la lengüeta de agarre 4.  In order to be able to pull the opening / closing flap 2 in order to move it from the closed position to the open position, the opening / closing flap 2 has a grip tab 4 located on the side opposite to the fold line 6, and this grip tab 4 has an adhesive free grip area 4a (Figs. 2 and 3) on the bottom surface of the base sheet 1. Preferably, the adhesive free grip area 4a extends over a narrow area of the opening / closing flap 2 adjacent to the flap cutting lines 8 on both sides of the grip tab 4 to facilitate the opening of the opening of the opening / closing flap 2 and to avoid tearing at the junction between the tongue of the grip 4 and the opening flap closure 2. In the embodiment shown, the frame portion 7 does not completely surround the opening / closing flap 2 since it is interrupted by the grip tab 4.
Tal como muestran las Figs. 4 y 5, las líneas de corte de solapa 8 que separan la solapa de apertura/cierre 2 de la porción de marco 7 comprenden unos cortes incompletos que inicialmente afectan la práctica totalidad pero no todo el grosor de la lámina base 1 (Fig. 4). Estos cortes incompletos se completan o se terminan de romper cuando la solapa de apertura/cierre 2 es abierta por primera vez (Fig. 5), por ejemplo tirando con fuerza hacia arriba de la lengüeta de agarre 4, de modo que las líneas de corte de solapa 8 actúan como un precinto de garantía y proporciona una evidencia de manipulación sin alterar el funcionamiento normal del dispositivo de apertura/cierre y sin necesidad de incluir un elemento de precinto adicional en el dispositivo de apertura/cierre.  As shown in Figs. 4 and 5, the flap cut lines 8 separating the opening / closing flap 2 of the frame portion 7 comprise incomplete cuts that initially affect almost all but not the entire thickness of the base sheet 1 (Fig. 4 ). These incomplete cuts are completed or finished breaking when the opening / closing flap 2 is opened for the first time (Fig. 5), for example by pulling up on the tongue 4, so that the cutting lines flap 8 acts as a guarantee seal and provides evidence of tampering without disturbing the normal operation of the opening / closing device and without the need to include an additional seal element in the opening / closing device.
La Fig. 6 muestra una realización alternativa en la que las líneas de corte de solapa 8 comprenden unos cortes discontinuos mutuamente alineados que inicialmente afectan todo el grosor de la lámina base 1 pero que están separados unos de otros por unos espacios no cortados, donde cada uno los corte discontinuos tiene una longitud A aproximadamente igual a una longitud B de los espacios no cortados entre dos cortes discontinuos adyacentes. Estos cortes discontinuos mutuamente alineados se completan o se terminan de romper cuando la solapa de apertura/cierre 2 es abierta por primera vez actuando como un precinto de garantía y proporcionando una evidencia de manipulación.  Fig. 6 shows an alternative embodiment in which the flap cut lines 8 comprise mutually aligned discontinuous cuts that initially affect the entire thickness of the base sheet 1 but are separated from each other by uncut spaces, where each One of the discontinuous cuts has a length A approximately equal to a length B of the uncut spaces between two adjacent discontinuous cuts. These mutually aligned discontinuous cuts are completed or finished breaking when the opening / closing flap 2 is opened for the first time acting as a guarantee seal and providing evidence of tampering.
La porción de marco 7 tiene formado un corte de retención 3 situado en un lado de la línea de doblez 6 opuesto a la solapa de apertura/cierre 2, y en la superficie inferior de la lámina base 1 está provista un área de retención libre de adhesivo 3a adyacente al corte de retención 3. A su vez, la solapa de apertura/cierre 2 tiene una porción de contorno prominente 2a que, cuando la solapa de apertura/cierre 2 está en la posición abierta formando un ángulo de aproximadamente 180 grados con la porción de marco 7, puede ser insertada en el área de retención libre de adhesivo 3a a través del corte de retención 3, lo que permite retener la solapa de apertura/cierre 2 en la posición abierta. The frame portion 7 has a retention cut 3 formed on one side of the fold line 6 opposite the opening / closing flap 2, and on the bottom surface of the base sheet 1 there is provided a retention area free of adhesive 3a adjacent to retention cut 3. In turn, the opening / closing flap 2 has a prominent contour portion 2a which, when the opening / closing flap 2 is in the open position at an angle of approximately 180 degrees with the frame portion 7, can be inserted in the adhesive-free retention area 3a through the retention cut 3, which allows the opening / closing flap 2 to be retained in the open position.
En la realización mostrada, el contorno de la solapa de apertura/cierre 2 definido por las una o más líneas de corte de solapa 8 tiene una forma en general rectangular con unas esquinas redondeadas, y una de estas esquinas redondeadas constituye la mencionada porción de contorno prominente 2a de la solapa de apertura/cierre 2. En concordancia, el corte de retención 3 está dispuesto en una posición inclinada respecto a los lados de la forma rectangular de la solapa de apertura/cierre 2. La porción de marco 7 tiene un contorno exterior 9 que tiene asimismo una forma en general rectangular con unas esquinas redondeadas.  In the embodiment shown, the contour of the opening / closing flap 2 defined by the one or more flap cutting lines 8 has a generally rectangular shape with rounded corners, and one of these rounded corners constitutes said contour portion prominent 2a of the opening / closing flap 2. Accordingly, the retaining cut 3 is arranged in an inclined position relative to the sides of the rectangular shape of the opening / closing flap 2. The frame portion 7 has an outline exterior 9 which also has a generally rectangular shape with rounded corners.
El alcance de la presente invención está definido por las reivindicaciones adjuntas.  The scope of the present invention is defined by the appended claims.

Claims

REIVINDICACIONES
1.- Dispositivo de apertura/cierre para envase flexible desechable, comprendiendo una lámina base (1 ) que tiene una superficie inferior provista de adhesivo (5) para ser adherida a una pared del envase flexible desechable cubriendo una abertura de dispensación formada en la misma, teniendo dicha lámina base (1 ) una o más líneas de corte de solapa (8) que definen una solapa de apertura/cierre (2) y una porción de marco (7) que rodea al menos en parte a dicha solapa de apertura/cierre (2), donde la solapa de apertura/cierre (2) está conectada a dicha porción de marco (7) por una línea de doblez (6), y donde dicha solapa de apertura/cierre (2) es movible entre una posición cerrada, en la que la solapa de apertura/cierre (2) está coplanaria con la porción de marco (7), y una posición abierta, en la que la solapa de apertura/cierre (2) está doblada por dicha línea de doblez (6), caracterizado por que la lámina base (1 ) comprende una única capa hecha de un material polimérico sintético y dichas una o más líneas de corte de solapa (8) están formados por unos cortes incompletos que inicialmente afectan la práctica totalidad pero no todo el grosor de la lámina base (1 ) o por unos cortes discontinuos mutuamente alineados que son susceptibles de completarse cuando la solapa de apertura/cierre (2) es abierta por primera vez actuando como un precinto de garantía y proporcionando evidencia de manipulación. 1. Opening / closing device for disposable flexible container, comprising a base sheet (1) having a lower surface provided with adhesive (5) to be adhered to a wall of the disposable flexible container covering a dispensing opening formed therein said base sheet (1) having one or more flap cut lines (8) defining an opening / closing flap (2) and a frame portion (7) that at least partially surrounds said opening flap / closure (2), where the opening / closing flap (2) is connected to said frame portion (7) by a fold line (6), and where said opening / closing flap (2) is movable between a position closed, in which the opening / closing flap (2) is coplanar with the frame portion (7), and an open position, in which the opening / closing flap (2) is folded by said fold line ( 6), characterized in that the base sheet (1) comprises a single layer made of a polymer material rich synthetic and said one or more flap cut lines (8) are formed by incomplete cuts that initially affect almost all but not all the thickness of the base sheet (1) or by mutually aligned discontinuous cuts that are susceptible to be completed when the opening / closing flap (2) is opened for the first time acting as a guarantee seal and providing evidence of tampering.
2.- Dispositivo de apertura/cierre según la reivindicación 1 , caracterizado por que cada uno de dichos corte discontinuos que constituyen las una o más líneas de corte de solapa (8) tiene una longitud (A) que es aproximadamente igual a una longitud (B) de unos espacios no cortados entre dos cortes discontinuos adyacentes.  2. Opening / closing device according to claim 1, characterized in that each of said discontinuous cuts that constitute the one or more flap cut lines (8) has a length (A) that is approximately equal to a length ( B) of uncut spaces between two adjacent discontinuous cuts.
3. - Dispositivo de apertura/cierre según la reivindicación 1 , caracterizado por que la porción de marco (7) incluye un corte de retención (3) situado en un lado de la línea de doblez (6) opuesto a la solapa de apertura/cierre (2) y un área de retención libre de adhesivo (3a) adyacente a dicho corte de retención (3) en dicha superficie inferior de la lámina base (1 ), y la solapa de apertura/cierre (2) tiene una porción de contorno prominente (2a) insertable en dicha área de retención libre de adhesivo (3a) a través del corte de retención (3) cuando la solapa de apertura/cierre (2) está en dicha posición abierta.  3. - Opening / closing device according to claim 1, characterized in that the frame portion (7) includes a retention cut (3) located on one side of the fold line (6) opposite the opening flap / closure (2) and an adhesive-free retention area (3a) adjacent to said retention cut (3) on said lower surface of the base sheet (1), and the opening / closing flap (2) has a portion of prominent contour (2a) insertable in said adhesive-free retention area (3a) through the retention cut (3) when the opening / closing flap (2) is in said open position.
4. - Dispositivo de apertura/cierre según la reivindicación 3, caracterizado por que un contorno de la solapa de apertura/cierre (2) definido por las una o más líneas de corte de solapa (8) tiene una forma en general rectangular con unas esquinas redondeadas, y dicha porción de contorno prominente (2a) de la solapa de apertura/cierre (2) comprende una de dichas esquinas redondeadas. 4. - Opening / closing device according to claim 3, characterized in that an outline of the opening / closing flap (2) defined by the one or more flap cutting lines (8) has a generally rectangular shape with some rounded corners, and said prominent contour portion (2a) of the opening / closing flap (2) comprises one of said rounded corners.
5. - Dispositivo de apertura/cierre según la reivindicación 1 , caracterizado por que ia solapa de apertura/cierre (2) tiene una lengüeta de agarre (4) que sobresale desde un lado de la solapa de apertura/cierre (2) opuesto a dicha línea de doblez (6), y dicha lengüeta de agarre (4) tiene un área de agarre libre de adhesivo (4a) en la superficie inferior de la lámina base (1 ). 5. - Opening / closing device according to claim 1, characterized in that the opening / closing flap (2) has a grip tab (4) protruding from one side of the opening / closing flap (2) opposite to said fold line (6), and said grip tab (4) has an adhesive free grip area (4a) on the bottom surface of the base sheet (1).
6. - Dispositivo de apertura/cierre según la reivindicación 5, caracterizado por que dicha área de agarre libre de adhesivo (4a) se extiende en un área de la solapa de apertura/cierre (2) adyacente a dichas una o más líneas de corte de solapa (8) a ambos lados de la lengüeta de agarre (4).  6. - Opening / closing device according to claim 5, characterized in that said adhesive-free grip area (4a) extends in an area of the opening / closing flap (2) adjacent to said one or more cutting lines flap (8) on both sides of the grip tab (4).
7.- Dispositivo de apertura/cierre según la reivindicación 5 o 6, caracterizado por que dicha porción de marco (7) está interrumpida por la lengüeta de agarre (4).  7. Opening / closing device according to claim 5 or 6, characterized in that said frame portion (7) is interrupted by the grip tab (4).
8.- Dispositivo de apertura/cierre según la reivindicación 1 , caracterizado por que la línea de doblez (6) está definida por una pluralidad de cortes discontinuos mutuamente alineados.  8. Opening / closing device according to claim 1, characterized in that the fold line (6) is defined by a plurality of mutually aligned discontinuous cuts.
9.- Dispositivo de apertura/cierre según la reivindicación 1 , caracterizado por que dicho material polimérico sintético está seleccionado de un grupo que comprende polietileno, polipropileno, poliéster, poliamida, y cloruro de polivinilo.  9. Opening / closing device according to claim 1, characterized in that said synthetic polymeric material is selected from a group comprising polyethylene, polypropylene, polyester, polyamide, and polyvinyl chloride.
PCT/ES2015/000134 2015-10-09 2015-10-09 Opening/closing device for flexible disposable container WO2017060542A1 (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
PCT/ES2015/000134 WO2017060542A1 (en) 2015-10-09 2015-10-09 Opening/closing device for flexible disposable container

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4679693A (en) * 1986-05-14 1987-07-14 Harold Forman Label resealing container
EP0488967A1 (en) * 1990-11-27 1992-06-03 SOCIETA' CONSORTILE RICERCHE ANGELINI S.p.A A container-dispenser with an improved closure element, particularly for impregnated wipes and similar products
US20040089578A1 (en) * 2002-11-12 2004-05-13 Lin Pai Yung Napkin container having openable and sealable cover
WO2011146658A1 (en) * 2010-05-18 2011-11-24 Kraft Foods Global Brands Llc Reclosable flexible packaging and methods for manufacturing same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4679693A (en) * 1986-05-14 1987-07-14 Harold Forman Label resealing container
EP0488967A1 (en) * 1990-11-27 1992-06-03 SOCIETA' CONSORTILE RICERCHE ANGELINI S.p.A A container-dispenser with an improved closure element, particularly for impregnated wipes and similar products
US20040089578A1 (en) * 2002-11-12 2004-05-13 Lin Pai Yung Napkin container having openable and sealable cover
WO2011146658A1 (en) * 2010-05-18 2011-11-24 Kraft Foods Global Brands Llc Reclosable flexible packaging and methods for manufacturing same

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