ES2661378T3

ES2661378T3 - Continuous band for the manufacture of plastic-type paper bags for fruit and vegetable products and the like

Info

Publication number: ES2661378T3
Application number: ES13849357.2T
Authority: ES
Inventors: José María MESEGUER HUERTAS
Original assignee: Cristobal Meseguer SA
Current assignee: Cristobal Meseguer SA
Priority date: 2012-10-22
Filing date: 2013-08-07
Publication date: 2018-03-28
Anticipated expiration: 2033-08-07
Also published as: EP2955125B1; ES2463617A1; PL2955125T3; WO2014064307A1; EP2955125A4; NO2955125T3; EP2955125A1

Abstract

Banda continua para la fabricación de bolsas tipo cesta de papel plastificado para productos hortofrutícolas y similares en que la banda continua está constituida por una lámina continua de papel plastificado en la que en correspondencia con cada uno de los sectores de la misma, en alineación longitudinal, correspondientes a la posterior elaboración de las bolsas, se establecen unas placas rectangulares de cartón plastificado situadas de tal manera que una vez realizadas las correspondientes termosoldadura, estas placas rectangulares de plástico quedan situadas en laterales opuestos de la bolsa formada que una vez llenada con el producto a envasar adopta una forma de caja o cesta. La banda continua tendrá refuerzos de polietileno en las zonas correspondientes a las termosoldaduras y, como una opción para el incremento de la resistencia mecánica de la bolsa tipo cesta, en la periferia de las ventanas y de las perforaciones.Continuous band for the manufacture of plastic-type paper basket bags for fruit and vegetable products and the like in which the continuous band is constituted by a continuous sheet of plasticized paper in which in correspondence with each of the sectors thereof, in longitudinal alignment, corresponding to the subsequent elaboration of the bags, rectangular plates of plasticized cardboard are established so that once the corresponding heat welding is made, these rectangular plastic plates are located on opposite sides of the formed bag that once filled with the product To pack adopts a box or basket form. The continuous band will have polyethylene reinforcements in the areas corresponding to the thermosolders and, as an option for increasing the mechanical resistance of the basket type bag, on the periphery of the windows and the perforations.

Description

Banda continua para la fabricación de bolsas tipo cesta de papel plastificado para productos hortofrutícolas y similares 5 Continuous belt for the manufacture of plastic-type paper bags for fruit and vegetable products and the like 5

Object of the invention

La presente invención se refiere a una banda continua, que ha sido especialmente concebida para la fabricación de bolsas tipo cesta para productos hortofrutícolas y similares, mediante termosoldadura longitudinal o cualquier The present invention relates to a continuous band, which has been specially designed for the manufacture of basket-type bags for fruit and vegetable products and the like, by longitudinal heat welding or any

10 procedimiento similar de dicha banda a través de sus bordes longitudinales, para convertirla en un tubo continuo, y mediante corte transversal y soldadura paralela a dicho corte, para la obtención de las bolsas tipo cesta unitarias, cierre e independización de las mismas. 10 similar procedure of said band through its longitudinal edges, to convert it into a continuous tube, and by transverse cutting and welding parallel to said cut, to obtain the unitary basket type bags, closure and independence thereof.

El objeto de la invención es conseguir una banda continua, que incorpora dos placas rectangulares de cartón The object of the invention is to achieve a continuous band, which incorporates two rectangular cardboard plates

15 plastificado y una serie de ventanas y, en su caso, perforaciones, de la cual se puede obtener, mediante la unión de sus bordes por termosoldadura, una bolsa tipo cesta, dos de cuyos laterales son rígidos, y que una vez llenada con el producto a envasar adopta una forma similar a una bandeja o cesta y que tiene una o más perforaciones para obtener una máxima resistencia mecánica de la bolsa, una correcta aireación de los productos, una óptima protección de los productos contenidos en la misma frente al aplastamiento, una mayor capacidad de impresión en la 15 plasticized and a series of windows and, where appropriate, perforations, from which you can obtain, by joining its edges by heat welding, a basket bag, two of whose sides are rigid, and that once filled with the Product to be packaged adopts a form similar to a tray or basket and has one or more perforations to obtain a maximum mechanical resistance of the bag, a correct aeration of the products, an optimal protection of the products contained therein against crushing, greater printing capacity in the

20 bolsa y una mayor rapidez en la fabricación de la bolsa tipo cesta y una mayor velocidad en su llenado. 20 bag and faster manufacturing of the basket type bag and faster filling.

Además, es objeto de esta invención obtener una banda continua que sea más económica que las tradicionales bolsas de plástico o de papel y que sea menos lesiva al medio ambiente que las bolsas de plástico. In addition, it is the object of this invention to obtain a continuous band that is cheaper than traditional plastic or paper bags and that is less environmentally damaging than plastic bags.

Background of the invention.

Determinados productos hortofrutícolas, como tomates, cerezas, naranjas, etc., se comercializan desde hace tiempo en cestas de papel o cartón o cajas de madera o plástico que en muchos casos están protegidas y envueltas en bolsas de plástico perforadas que permiten tanto la aireación del producto, la visualización directa del producto, su Certain fruit and vegetable products, such as tomatoes, cherries, oranges, etc., have long been marketed in paper or cardboard baskets or wooden or plastic boxes that in many cases are protected and wrapped in perforated plastic bags that allow both aeration of the product, direct product display, your

30 protección frente al aplastamiento y facilitan su almacenaje o colocación en los expositores y lineales de los puntos de venta. 30 protection against crushing and facilitate storage or placement in the exhibitors and linear points of sale.

Las anteriores cestas o cajas se han de llenar de los citados productos manualmente o mediante máquinas con velocidades de producción bajas. Además, posteriormente estas cestas o cajas han de ser envueltas en bolsas de The above baskets or boxes must be filled with the aforementioned products manually or by machines with low production speeds. In addition, later these baskets or boxes have to be wrapped in bags of

35 material plástico. El proceso de envasado de los productos hortofrutícolas en dichas cestas o cajas es lento y los materiales tienen un coste elevado. 35 plastic material. The process of packaging the fruit and vegetable products in these baskets or boxes is slow and the materials have a high cost.

A continuación, se mencionan algunos documentos de patente que incluyen algunas características relacionadas con la presente invención. Next, some patent documents that include some features related to the present invention are mentioned.

40 El documento EP 2 070 831 A1, que describe una banda continua para la fabricación de bolsas formadas a partir de una lámina continua de papel plastificado que tiene una pluralidad de perforaciones que se sellan usando fragmentos de red fijados a la periferia de dichas perforaciones. La zona de la lámina continua destinada a contener el asa está dotada de un parche o refuerzo, por lo que la cantidad de plástico utilizado se reduce sin afectar a la EP 2 070 831 A1, which describes a continuous web for the manufacture of bags formed from a continuous sheet of plasticized paper having a plurality of perforations that are sealed using net fragments fixed to the periphery of said perforations. The area of the continuous sheet intended to contain the handle is provided with a patch or reinforcement, whereby the amount of plastic used is reduced without affecting the

45 resistencia mecánica de la bolsa. 45 mechanical resistance of the bag.

El documento US 3 568 576 A, que describe un procedimiento para fabricar una banda continua para bolsas. Dichas bolsas tienen aberturas en su extremo superior para el agarre, donde los refuerzos de material plástico están dispuestos pegados a la banda continua y se dispone una inserción de cartón entre el refuerzo y la banda, debido a US 3 568 576 A, which describes a process for manufacturing a continuous web for bags. Said bags have openings at their upper end for the grip, where the reinforcements of plastic material are arranged attached to the continuous band and a cardboard insert is arranged between the reinforcement and the band, due to

50 lo cual la resistencia mecánica de esta zona es muy alta. 50 which the mechanical resistance of this area is very high.

El documento ES 1 040 772 U, que describe una banda continua para fabricar bolsas formadas a partir de una lámina continua de papel plastificado. Document ES 1 040 772 U, which describes a continuous strip for manufacturing bags formed from a continuous sheet of plasticized paper.

55 El documento FR 1 389 248 A, que divulga un receptáculo fabricado a partir de una banda continua de papel plastificado. 55 Document FR 1 389 248 A, which discloses a receptacle made from a continuous web of laminated paper.

El documento DE 295 06 855 U1, que describe una banda continua de papel plastificado que tiene ventanas para inspeccionar el producto. La zona donde se disponen las ventanas está reforzada con fragmentos de papel Document DE 295 06 855 U1, which describes a continuous web of plasticized paper having windows to inspect the product. The area where the windows are arranged is reinforced with paper fragments

60 plastificado u otro material. 60 plasticized or other material.

Description of the invention

La banda continua para la fabricación de bolsas tipo cesta que propone la invención, constituye un nuevo avance The continuous band for the manufacture of basket-type bags proposed by the invention constitutes a new advance

5 tecnológico en este campo y se basa en la utilización de una banda continua que está destinada a cerrarse sobre sí misma, mediante la unión de sus bordes longitudinales mediante una termosoldadura o procedimiento similar paralela a dichos bordes longitudinales, para configurar un tubo continuo fragmentable en una pluralidad de sectores correspondientes a las respectivas bolsas tipo cesta, dicha banda continua tiene una o más ventanas y, en su caso, perforaciones de igual o diferente tamaño. Dicha banda continua es una lámina continua de papel plastificado al 5 technology in this field and is based on the use of a continuous band that is intended to close on itself, by joining its longitudinal edges by means of a heat welding or similar procedure parallel to said longitudinal edges, to configure a fragmented continuous tube in a plurality of sectors corresponding to the respective basket type bags, said continuous band has one or more windows and, where appropriate, perforations of the same or different size. Said continuous band is a continuous sheet of plasticized paper at

10 menos en una de sus caras, de anchura igual a la de la banda continua. En correspondencia con cada uno de los sectores de la lámina continua de papel plastificado previstos para la obtención de una bolsa tipo cesta, se unen a dicha lámina continua de plástico dos placas rectangulares de cartón plastificado al menos en una de sus caras cuyos ejes longitudinales son paralelos al eje longitudinal de la lámina continua de papel plastificado. Así mismo se disponen refuerzos de polietileno, en las zonas previstas para las asas, las termosoldaduras y, en su caso, en los 10 less on one of its faces, of a width equal to that of the continuous band. Corresponding to each of the sectors of the continuous sheet of plasticized paper provided for obtaining a basket-type bag, two rectangular plates of plasticized cardboard are attached to said continuous plastic sheet at least on one of its faces whose longitudinal axes are parallel to the longitudinal axis of the continuous sheet of laminated paper. Likewise, polyethylene reinforcements are provided, in the areas provided for the handles, the thermosolders and, where appropriate, in the

15 bordes o periferia de las ventanas y perforaciones, unidos a la lámina de papel plastificado mediante termosoldadura 15 edges or periphery of windows and perforations, attached to the laminated paper sheet by heat welding

o procedimiento similar. or similar procedure.

En una realización preferente de la invención la distancia entre los ejes longitudinales de las dos placas rectangulares de cartón plastificado es la mitad del ancho de la lámina continua de papel plastificado. In a preferred embodiment of the invention, the distance between the longitudinal axes of the two rectangular plates of laminated cardboard is half the width of the continuous sheet of laminated paper.

20 En otra realización preferente de la invención la longitud de las placas rectangulares de cartón plastificado es menor que la longitud de los sectores previstos para la obtención de una bolsa tipo cesta menos el ancho de dichas placas rectangulares de cartón plastificado. In another preferred embodiment of the invention the length of the rectangular plates of plasticized cardboard is less than the length of the sectors provided for obtaining a basket type bag less the width of said rectangular plates of plasticized cardboard.

25 En otra realización preferente las placas rectangulares de cartón plastificado están unidas a la lámina continua de papel plastificado mediante termosoldadura o encolado. In another preferred embodiment the rectangular plates of plasticized cardboard are attached to the continuous sheet of plasticized paper by heat welding or gluing.

Así mismo, en correspondencia con cada uno de los sectores de la lámina continua de papel plastificado, se puede establecer al menos una ventana, que se cierra con la colaboración de un fragmento de red, formal y 30 dimensionalmente adecuado a dicha ventana y fijado por termosoldadura a la periferia de dichas ventanas, de tal manera que las ventanas no se solapen con las placas rectangulares de cartón plastificado. Likewise, in correspondence with each of the sectors of the continuous laminated sheet of paper, at least one window can be established, which closes with the collaboration of a network fragment, formal and dimensionally appropriate to said window and fixed by heat welding to the periphery of said windows, such that the windows do not overlap with the rectangular plates of plasticized cardboard.

Además cuando solo se establece una ventana en la lámina continua de papel plastificado está se puede situar centrada respecto al eje longitudinal de dicha lámina continua de papel plastificado y a ambos lados de la misma se 35 pueden establecer pequeñas perforaciones, carentes de red, que no coinciden con la posición de las placas rectangulares. In addition, when only one window is established on the continuous sheet of laminated paper, it can be placed centered with respect to the longitudinal axis of said continuous sheet of laminated paper and on both sides of the same, small perforations can be established, lacking a net, which do not coincide. with the position of the rectangular plates.

La lámina continua de papel plastificado y las placas rectangulares de cartón plastificado pueden estar plastificadas por sus dos caras. The continuous sheet of plasticized paper and the rectangular plates of plasticized cardboard can be plasticized on both sides.

40 La red que cierra la ventana puede ser un tira continua de red que recorre longitudinalmente la lámina continua de papel plastificado. 40 The net that closes the window can be a continuous strip of net that runs longitudinally on the continuous sheet of laminated paper.

Description of the figures.

45 Para complementar la descripción y con objeto de ayudar a una mejor comprensión de las características de la invención, de acuerdo con un ejemplo preferente de realización de la misma, se acompaña como parte integrante de la descripción, un juego de figuras en donde con carácter ilustrativo y no limitativo, se ha representado lo siguiente: In order to complement the description and in order to help a better understanding of the characteristics of the invention, according to a preferred embodiment of the same, a set of figures is attached as an integral part of the description, where Illustrative and not limiting, the following has been represented:

50 Figura 1.- muestra un despiece en perspectiva una banda continua de papel plastificado para la fabricación de bolsas tipo cestas para productos hortofrutícolas y similares. 50 Figure 1.- shows an exploded perspective view of a continuous band of plasticized paper for the manufacture of basket-type bags for fruit and vegetable products and the like.

Figura 2.- Muestra una perspectiva de la banda continua de la figura 1 debidamente acabada. Figure 2.- Shows a perspective of the continuous band of Figure 1 duly finished.

55 Figura 3.- Muestra una banda continua debidamente acabada en la cual las ventanas centrales están cerradas por una tira de red que recorre longitudinalmente la lámina continua de papel plastificado. 55 Figure 3.- It shows a properly finished continuous band in which the central windows are closed by a strip of net that runs longitudinally through the continuous sheet of laminated paper.

Figura 4.- Muestra una banda continua debidamente acabada con una ventana central cerrada por un fragmento de red y una serie de perforaciones a ambos lados de la ventana central. 60 Figure 4.- Shows a continuous band duly finished with a central window closed by a network fragment and a series of perforations on both sides of the central window. 60

Figura 5.- Muestra dos perspectivas de una bolsa obtenida en la que se ve la forma de cesta o bandeja que adquiere la bolsa una vez llenada de producto y las termosoldaduras realizadas. Figure 5.- It shows two perspectives of a bag obtained in which the shape of a basket or tray that the bag acquires once it is filled with product and the thermosolders made is seen.

List of references.

1. one.: Banda continua Continuous band

2. 2.: Lamina continua de papel plastificado Continuous laminated plasticized paper

3. 3.: Ventana Window

4. Four.: Placa rectangular de cartón plastificado Rectangular plasticized cardboard plate

10 5. Fragmento de red 10 5. Network fragment

6. 6.: Bolsa tipo cesta Shopping bag

7. 7.: Termosoldadura longitudinal Longitudinal welding

8. 8.: Termosoldadura transversal Cross welding

9. Perforaciones 15 10. Tira de red 9. Perforations 15 10. Net strip

11. Refuerzos de polietileno 11. Polyethylene reinforcements

Realización preferente de la invención Preferred Embodiment of the Invention

20 A la vista de las figuras, especialmente 1 y 2, puede observarse como la banda continua (1) para fabricación de bolsas tipo cestas, objeto de la presente invención, comprende una lámina continua de papel plastificado (2), de anchura coincidente con la de la propia banda continua (1) y consecuentemente de anchura mayor que el doble de la anchura de la bolsa tipo cesta a obtener. A lo largo de la lámina continua de papel plastificado (2) se establecen agrupaciones de ventanas (3) y, en su caso, de perforaciones (9) obtenidas ambas por troquelado, y posiciones de 20 In view of the figures, especially 1 and 2, it can be seen how the continuous band (1) for manufacturing basket-type bags, object of the present invention, comprises a continuous sheet of plasticized paper (2), of a width coinciding with that of the band itself (1) and consequently of width greater than twice the width of the basket type bag to be obtained. Clusters of windows (3) and, where appropriate, perforations (9) both obtained by die-cutting, and positions are established along the continuous sheet of laminated paper (2).

25 las placas rectangulares de cartón plastificado (4), preferentemente una agrupación para cada bolsa tipo cesta (6) a obtener de dicha banda continua, existiendo como mínimo una ventana (3) centrada sobre la que ha de ser la cara superior de la bolsa, y opcionalmente una serie de perforaciones (9) que sin necesidad de que sean cerradas mediante fragmentos de red colaboran a la aireación del producto envasado. La posición de las placas rectangulares de plástico (4) de cada agrupación será la adecuada para que al fabricar la bolsa queden colocadas en los laterales 25 the rectangular plates of plasticized cardboard (4), preferably a grouping for each basket type bag (6) to be obtained from said continuous band, at least one window (3) centered on which the upper face of the bag must be , and optionally a series of perforations (9) that without having to be closed by means of net fragments collaborate to aerate the packaged product. The position of the rectangular plastic plates (4) of each group will be adequate so that when manufacturing the bag they are placed on the sides

30 de la bolsa en los que no hay ninguna termosoldadura. 30 of the bag in which there is no heat welding.

En las zonas previstas para las asas, las termosoldaduras y en los bordes o periferia de las ventanas y perforaciones se disponen unos refuerzos de polietileno (11) con el fin de reforzar la bolsa tipo cesta en las posibles zonas de rotura y poder reducir el espesor y gramaje del papel plastificado que se utiliza. In the areas provided for the handles, the thermosoldaduras and in the edges or periphery of the windows and perforations some reinforcements of polyethylene (11) are arranged in order to reinforce the basket type bag in the possible zones of breakage and to be able to reduce the thickness and weight of the plasticized paper used.

35 Los refuerzos de polietileno (11) se realizan con parches de polietileno de forma similar a las termosoldaduras, asas, ventanas y perforaciones y de dimensiones superiores a estás que se unen a la banda continua de papel plastificado mediante termosoldadura y las asas, ventanas y perforaciones se realizan tras el pegado mediante un troquelado. 35 The polyethylene reinforcements (11) are made with polyethylene patches similar to the thermosolders, handles, windows and perforations and of dimensions greater than these that are attached to the continuous web of plasticized paper by means of heat welding and the handles, windows and Perforations are made after gluing by punching.

40 La lámina continua de papel plastificado (1) se unirá por sus bordes longitudinales mediante una termosoldadura longitudinal (7) y mediante una doble línea de termosoldadura transversal (8) para formar la bolsa tipo cesta. 40 The continuous sheet of plasticized paper (1) will be joined by its longitudinal edges by means of a longitudinal heat welding (7) and by a double transverse heat welding line (8) to form the basket bag.

Los fragmentos de red (5) que cierran las ventanas (3) respectivas se fijan mediante termosoldadura. The net fragments (5) that close the respective windows (3) are fixed by heat welding.

45 Las placas rectangulares de cartón plastificado se pueden fijar a la lámina continua de plástico mediante la termosoldadura de sus bordes a la lámina continua de plástico o por encolado. 45 Rectangular plasticized cardboard plates can be fixed to the continuous plastic sheet by heat welding their edges to the continuous plastic sheet or by gluing.

En otra realización preferente las ventanas se cierran mediante una tira de red (10) que recorre longitudinalmente la lámina de papel plastificado y que es fijada a dicha lamina mediante las correspondientes termosoldaduras. In another preferred embodiment, the windows are closed by means of a net strip (10) that runs the laminated paper sheet longitudinally and is fixed to said sheet by means of the corresponding heat seals.

50 En las realizaciones anteriormente expuestas la bolsa tipo cesta resultante, una vez rellenada del producto hortofrutícola elegido adopta una forma de bandeja o cesta en la que dos de sus laterales están formados por dos placas rectangulares de cartón plastificado (4), que ofrecen una resistencia óptima para impedir el aplastamiento del producto envasado. 50 In the above-described embodiments, the resulting basket type bag, once filled with the chosen fruit and vegetable product, adopts a tray or basket shape in which two of its sides are formed by two rectangular plates of plasticized cardboard (4), which offer a resistance Optimal to prevent crushing of the packaged product.

55 En cualquiera de los casos anteriormente expuestos, las bolsas tipo cesta resultantes ofrecen amplias áreas para impresiones gráfica alusivas a los productos contenidas en las mismas. 55 In any of the cases described above, the resulting basket-type bags offer ample areas for graphic prints alluding to the products contained therein.

Claims

1. Continuous band (1) for the manufacture of basket-type bags (6) for fruit and vegetable products and the like, of the type in which said band (1) is intended to close on itself, by joining its

5 longitudinal edges by heat welding, to configure a fragmented continuous tube in a plurality of sectors corresponding to respective basket-type bags (6); said continuous band (1) has one or more windows (3) covered by means of a network fragment, characterized in that it consists of:

to. A continuous sheet of paper (2), plasticized at least on the side intended to be the inner side of the bag type 10 basket (6),

i.i.: dicha lámina continua de papel plastificado (2) presenta una anchura igual a la dicha banda continua (1); said continuous sheet of plasticized paper (2) has a width equal to said continuous web (1);

b.b.: dos placas de cartón rectangulares (4) plastificadas en al menos el lado destinado a entrar en contacto con la cara two rectangular cardboard plates (4) plasticized on at least the side intended to come into contact with the face

15 internal of the continuous sheet of plasticized paper (2) intended to be the inner face of the basket-type bag (6), such that:

i. said rectangular plasticized cardboard plates (4) are arranged in the continuous sheet of coated paper (2)

mentioned above in correspondence with each of the sectors corresponding to the respective 20 basket type bags, and are properly positioned to remain on the sides of the basket type bags (6),

ii. said rectangular plates of plasticized cardboard (4) are fixed to the continuous sheet of plasticized paper (2) by thermo welding or gluing, and

iii. The longitudinal axis of each of the rectangular cardboard plates (4) is parallel to the longitudinal axis of the sheet

plastic paper continuous (2), and 25

c. C.: refuerzos de polietileno (11) dispuestos en las zonas previstas para las asas, las termosoldaduras (7, 8), y en la periferia de las ventanas (3), polyethylene reinforcements (11) arranged in the areas provided for the handles, the thermosolders (7, 8), and on the periphery of the windows (3),

i.i.: dichos refuerzos de polietileno (11) se fijan, por medio de termosoldadura o un procedimiento similar, al lado de la said polyethylene reinforcements (11) are fixed, by means of heat welding or a similar procedure, to the side of the

continuous sheet of plasticized paper (2) intended to be the inside of the basket bag (6). 30

2. Continuous belt for the manufacture of basket-type bags, according to claim 1, characterized in that in correspondence with each of the sectors of the continuous sheet of plasticized paper (2), at least one perforation (9) is provided covered by a net fragment, and has polyethylene reinforcements at the periphery of the perforations (9); said reinforcements (11) are fixed, by means of heat welding or a similar procedure, next to

35 the continuous sheet of plasticized paper (2) intended to be the inner face of the basket type bag (6).

3. Continuous band for the manufacture of basket-type bags for fruit and vegetable products and the like, according to any of claims 1 and 2, characterized in that in correspondence with each of the sectors of the continuous sheet of laminated paper (2), there is provided at least one window (3), which is covered by

40 means of a network fragment (5), dimensionally and formally suitable for said window (3), and is fixed by heat welding to the periphery of said window (3), such that the position and size of the window ( 3) Do not overlap with rectangular plasticized cardboard plates (4).

4. Continuous band for the manufacture of basket-type bags for fruit and vegetable products, according to the

Claim 3, characterized in that the net covering the window (3) is a continuous strip of net that runs longitudinally along the continuous plastic sheet (2).

5. Continuous belt for the manufacture of basket-type bags for fruit and vegetable products according to claim 4, characterized in that the window (3) is centrally located with respect to the longitudinal axis of

50 the continuous sheet of plasticized paper (2), and on both sides of it there are small perforations (9) without net; these do not match the position of the rectangular cardboard plates (4).

6. Continuous band for the manufacture of basket-type bags for fruit and vegetable products, according to

any of the preceding claims, characterized in that the laminated paper sheet (2) is plasticized on both sides.

7. Continuous band for the manufacture of basket-type bags for fruit and vegetable products, according to any of the preceding claims, characterized in that the plasticized cardboard plates (4) are plasticized on both sides.