WO2007088221A1 - Method for forming the lower surface of a container without the application of heat in a vacuum packaging process - Google Patents
Method for forming the lower surface of a container without the application of heat in a vacuum packaging process Download PDFInfo
- Publication number
- WO2007088221A1 WO2007088221A1 PCT/ES2006/000718 ES2006000718W WO2007088221A1 WO 2007088221 A1 WO2007088221 A1 WO 2007088221A1 ES 2006000718 W ES2006000718 W ES 2006000718W WO 2007088221 A1 WO2007088221 A1 WO 2007088221A1
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- Prior art keywords
- container
- sheet
- procedure
- vacuum packaging
- packaging process
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- Legal status (The legal status 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 status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
- B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
- B65B9/045—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material for single articles, e.g. tablets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B11/00—Wrapping, e.g. partially or wholly enclosing, articles or quantities of material, in strips, sheets or blanks, of flexible material
- B65B11/50—Enclosing articles, or quantities of material, by disposing contents between two sheets, e.g. pocketed sheets, and securing their opposed free margins
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B47/00—Apparatus or devices for forming pockets or receptacles in or from sheets, blanks, or webs, comprising essentially a die into which the material is pressed or a folding die through which the material is moved
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
- B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
- B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
Definitions
- the present procedure is specially designed for containers formed of flexible and retractable plastic sheets, and not for metal, aluminum or rigid sheets.
- the conventional automated series manufacturing process of a vacuum container from two different sheets consists of several successive stages, in the first one the lower surface of the container is formed by heat in a mold, generally concave surface, then introduces the product into the concavity of said sheet, the product is covered with a top sheet, the vacuum is made inside both sheets and finally the container is closed by welding on the entire perimeter edge.
- thermoforming which uses a heat source to heat the plastic of the lower sheet to its softening temperature and then empties the gap between the mold and the sheet, arranged horizontally on the mold, so that it stretches, increasing its length, thanks to its properties in semi-plastic state and so it can adapt perfectly to the concave surface of the mold.
- the shaped surface to cool to be able to extract it from the mold.
- pre-stretching techniques have been developed by various means, such as those that use a punch or by prior blow, to obtain a greater regularity in the thickness of the sheet before the thermoforming process, but there are still losses of important raw material and energy.
- the present invention in one of its improvements, aims to solve the above-mentioned drawbacks, thanks to the elimination of the application of temperature and the stretching or pre-stretching of the lower sheet at the stage of shaping the lower surface of the container, whereby it gets reduce the manufacturing costs of the package and increase its quality.
- an advantageous method which mainly consists in shortening the width of the lower sheet with respect to the initial width of the rolled sheet in the reel before entering said sheet in the drive system, formed by two parallel chains separated a certain distance and transversely arranged rods, so that once the narrowed sheet is placed in said drag system, subjecting it longitudinally to the chains by means of fastening means and transversely by two longitudinal rods, when positioning the product on the sheet due to its own weight, it unfolds and acquires the necessary concavity of the container.
- support means for forming the lower surface of the container can be incorporated, such as the application of force by means of a piston or by blowing or air suction.
- the process object of the present invention includes the processes of:
- the means for shortening the width of the bottom sheet before entering the chain drag system is by creating of a series of bends or folds, however, it can be any other equivalent system that allows the reduction of said width without altering the essence of the invention.
- the distance between the chains of the drag system will depend on the value of the width of the final container, and will be substantially equal to the width of said final container.
- the means for fastening the sheet to the chain drive system are tweezers, and depending on the dimensions of the package to be manufactured, the number of them will vary.
- the means for fastening the chains engage in the two longitudinal bases of the narrowed lower sheet and hold the same tensioned to the drag chain, while the two rods hold the said sheet by the two transverse bases, to the Once they separate each of the packages in series.
- two rods are provided to fasten the narrowed lower sheet transversely to the two chains, the rods being disposed a distance according to the dimensions of the package to be manufactured, substantially equal to the length of the final container.
- each drag system is designed exclusively for a particular container; however, the possibility of dispensing with one of every two rods is foreseen, so that the distance between rods is double and the manufactured container will have the same width and twice the length, so that the same drag system can form Two different sized containers.
- support means are provided at the bottom of the drive chain, such as rollers or a horizontal surface, so that when introduce the product and form the concavity of the lower sheet it sits on top of said support, in order to prevent the sheet from getting too tight.
- the recommended procedure can be used for the manufacture of a single cavity for each container, as detailed above, or for the manufacture of multiple cavities for each container, known as "pack" packages, which are common in automated processes with large series, and use a single lower and upper sheet to manufacture several cavities at once, and then they can be punched out to obtain individual packages.
- the same procedure is used to shorten the width of the lower sheet, hold it to the drag system by its four bases and take advantage of the weight of the product to deploy the sheet, with the particularity that one or more are arranged intermediate separators arranged parallel to the chains with fastening means on both sides, so that the sheet is held longitudinally by more than two bases.
- the present process is used in packaging processes with stages of final shrinking or pre-shrinking of the sheets.
- the solution of eliminating the heat forming stage allows to solve the problems associated with the stretching of the plastic, and also reduces manufacturing costs of the container, since a thicker plastic gauge is not required than the final sheet and the associated costs are eliminated to heat generation; and in addition to not requiring a fixed mold the system offers greater versatility.
- Figure 1 is a plan view of a scheme of the vacuum packaging process of a product (15) from two different sheets, according to what is the object of the invention.
- Figure 2 is a front elevational view of a scheme of the vacuum packaging process of a product (15) from two different sheets, according to what is the object of the invention.
- Figures 3-6 are side elevation views of the successive stages of adaptation of the narrowed bottom sheet (13) held tensioned by the drag system until the bottom surface concavity (19) of the container (27) is reached, according to what is the object of the invention.
- Figure 7 is a plan view of a scheme of the vacuum packaging process from two different sheets to obtain a "pack" type container with two cavities (37), according to what is the object of the invention.
- the automated vacuum packaging process of a product (15) from two different sheets consists of different successive stages, first the bottom sheet (11) is unwound (21 ) of the lower coil
- the upper sheet (12) from the upper coil (18) is positioned (25) on the product (15), see figure 2 2, and finally the soldier station (26) is reached where the contour of the container (28) by four welded bands (32), one per side.
- the container (27) will have a prismatic configuration of substantially rectangular base.
- the container (27) obtained by the recommended method has a prismatic configuration with a rectangular base, see figure 2 1, however, the possibility of packaging with other forms, for example elliptical base, so instead of making four welded bands (32) one would be done only by following the perimeter contour of the container (27).
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Packages (AREA)
Abstract
Description
"PROCEDIMIENTO PARA CONFORMAR LA SUPERFICIE INFERIOR DE UN ENVASE SIN APLICACIÓN DE CALOR EN UN PROCESO DE ENVASADO"PROCEDURE TO CONFORM THE LOWER SURFACE OF A CONTAINER WITHOUT APPLICATION OF HEAT IN A PACKING PROCESS
AL VACÍO"ON THE VACUUM "
adaptar la geometría de la superficie inferior de un envase al propio producto sin aplicación de calor a partir de una lámina inferior de plástico delgado provinente de una bobina, formando el mismo parte de un proceso automatizado de envasado al vacío con uno o varios productos dentro de envolturas de plástico delgadas, cuya finalidad primordial es minimizar los costes de fabricación del envase a la vez que se consigue eliminar una de las etapas del proceso de conformado.adapting the geometry of the bottom surface of a container to the product itself without heat application from a thin plastic bottom sheet from a coil, forming the same part of an automated vacuum packaging process with one or more products within Thin plastic wrappers, whose primary purpose is to minimize the manufacturing costs of the package while eliminating one of the stages of the forming process.
El presente procedimiento está proyectado especialmente para envases formados por láminas de plástico flexibles y retráctiles, y no para láminas metálicas, alumínicas o rígidas.The present procedure is specially designed for containers formed of flexible and retractable plastic sheets, and not for metal, aluminum or rigid sheets.
El proceso de fabricación automatizado convencional en serie de un envase al vacío a partir de dos láminas distintas consiste en varias etapas sucesivas, en la primera de ellas se conforma por calor la superficie inferior del envase en un molde, de superficie generalmente cóncava, seguidamente se introduce el producto en la concavidad de dicha lámina, se cubre el producto con una lámina superior, se realiza el vacío en el interior de ambas láminas y finalmente se cierra el envase mediante una soldadura en todo el borde perimetral .The conventional automated series manufacturing process of a vacuum container from two different sheets consists of several successive stages, in the first one the lower surface of the container is formed by heat in a mold, generally concave surface, then introduces the product into the concavity of said sheet, the product is covered with a top sheet, the vacuum is made inside both sheets and finally the container is closed by welding on the entire perimeter edge.
Por lo general, en la actualidad existen distintos procedimientos utilizados para la conformación de la superficie inferior de un envase fabricado a partir de dos láminas distintas, los cuales permiten colocar una lámina delgada de plástico provinente de una bobina en la superficie interior de una matriz sensiblemente cóncava. De todos los procedimientos conocidos, el más extendido es el termoformado, el cual utiliza una fuente de calor para calentar el plástico de la lámina inferior hasta su temperatura de reblandecimiento y luego hace el vacío en el hueco entre el molde y la lámina, dispuesta horizontalmente sobre el molde, de manera que la misma se estira, aumentando su longitud, merced a sus propiedades en estado semi-plástico y así se pueda adaptar perfectamente a la superficie cóncava del molde. A continuación, se debe esperar a que la superficie conformada se enfrié para poderla extraer del molde.In general, there are currently different procedures used for shaping the bottom surface of a container made from two different sheets, which allow a thin sheet of plastic from a coil to be placed on the inside surface of a matrix that is substantially concave Of all known procedures, the most widespread it is the thermoforming, which uses a heat source to heat the plastic of the lower sheet to its softening temperature and then empties the gap between the mold and the sheet, arranged horizontally on the mold, so that it stretches, increasing its length, thanks to its properties in semi-plastic state and so it can adapt perfectly to the concave surface of the mold. Next, wait for the shaped surface to cool to be able to extract it from the mold.
Alternativamente, se puede aplicar presión sobre la lámina en vez de realizar el vacío, y también combinarse ambas técnicas para conformar por moldeo la superficie inferior del envase. Sin embargo, dicha técnica presenta algunos inconvenientes, principalmente debido al estirado de la lámina. Por un lado al tener que estirar el plástico la lámina de entrada debe tener un mayor grosor que la lámina final, lo cual encarece notablemente la materia prima del envase, y por otro al estirarse la lámina se adelgaza en zonas no deseadas y puede producir imperfecciones que disminuyen la calidad del envase final .Alternatively, pressure can be applied to the sheet instead of vacuuming, and both techniques can also be combined to mold the bottom surface of the container. However, said technique has some drawbacks, mainly due to the stretching of the sheet. On the one hand, when the plastic has to stretch the inlet sheet must have a greater thickness than the final sheet, which greatly increases the raw material of the container, and on the other, when the sheet is stretched, it thins in unwanted areas and can cause imperfections that decrease the quality of the final container.
Para solventar las desventajas anteriores se han desarrollado técnicas de pre-estirado por diversos medios, tales como las que utilizan un punzón o por soplado previo, para obtener una mayor regularidad en el espesor de la lámina antes del proceso de termoformado, pero aún existen pérdidas de materia prima y energéticas importantes.To solve the above disadvantages, pre-stretching techniques have been developed by various means, such as those that use a punch or by prior blow, to obtain a greater regularity in the thickness of the sheet before the thermoforming process, but there are still losses of important raw material and energy.
La presente invención en uno de sus perfeccionamientos pretende solventar los inconvenientes arriba expuestos, merced a la eliminación de la aplicación de temperatura y del estirado o pre-estirado de la lámina inferior en la etapa de conformación de la superficie inferior del envase, con lo que se consigue abaratar los costes de fabricación del envase y aumentar su calidad.The present invention, in one of its improvements, aims to solve the above-mentioned drawbacks, thanks to the elimination of the application of temperature and the stretching or pre-stretching of the lower sheet at the stage of shaping the lower surface of the container, whereby it gets reduce the manufacturing costs of the package and increase its quality.
Para lograr estas funciones se ha ideado un procedimiento ventajoso que consiste principalmente en acortar la anchura de la lámina inferior con respecto a las anchura inicial de la lámina enrollada en la bobina antes de entrar dicha lámina en el sistema de arrastre, formado el mismo por dos cadenas paralelas separadas una cierta distancia y dispuestas transversalmente unas varillas, de manera que una vez la lámina estrechada se coloca en el citado sistema de arrastre, sujetándola longitudinalmente a las cadenas mediante unos medios de sujeción y transversalmente mediante dos varillas longitudinales, al posicionar el producto sobre la lámina debido a su propio peso, la misma se despliega y adquiere la concavidad necesaria del envase.In order to achieve these functions, an advantageous method has been devised, which mainly consists in shortening the width of the lower sheet with respect to the initial width of the rolled sheet in the reel before entering said sheet in the drive system, formed by two parallel chains separated a certain distance and transversely arranged rods, so that once the narrowed sheet is placed in said drag system, subjecting it longitudinally to the chains by means of fastening means and transversely by two longitudinal rods, when positioning the product on the sheet due to its own weight, it unfolds and acquires the necessary concavity of the container.
Opcionalmente, se pueden incorporar medios de ayuda para el conformado de la superficie inferior del envase, tales como la aplicación de fuerza mediante un pistón o bien por soplado o aspiración de aire.Optionally, support means for forming the lower surface of the container can be incorporated, such as the application of force by means of a piston or by blowing or air suction.
Así, el procedimiento objeto de la presente invención incluye los procesos de:Thus, the process object of the present invention includes the processes of:
- Estrechamiento de la anchura de la lámina inferior por cualquier medio conocido, tales como pliegues o dobladuras.- Narrowing of the width of the bottom sheet by any known means, such as folds or bends.
- Posicionamiento de dicha lámina estrechada en el sistema de arrastre, sujetándola a las dos cadenas con unos medios de sujeción y transversalmente con dos varillas. - Conformado de la superficie inferior del envase al introducir el producto sobre la lámina estrechada y con el auxilio de medios de bufado/aspiración y/o de presión .- Positioning of said narrowed sheet in the drive system, securing it to the two chains with fastening means and transversely with two rods. - Forming the bottom surface of the container when the product is introduced on the narrowed sheet and with the aid of snorting / suction and / or pressure means.
Preferentemente, los medios para acortar la anchura de la lámina inferior antes de entrar en el sistema de arrastre por cadenas son mediante la creación de una serie de dobladuras o pliegues, sin embargo puede ser cualquier otro sistema equivalente que permita la disminución de la citada anchura sin que ello altere la esencia de la invención. La distancia entre las cadenas del sistema de arrastre irá en función del valor de la anchura del envase final, y será sensiblemente igual a la anchura del citado envase final.Preferably, the means for shortening the width of the bottom sheet before entering the chain drag system is by creating of a series of bends or folds, however, it can be any other equivalent system that allows the reduction of said width without altering the essence of the invention. The distance between the chains of the drag system will depend on the value of the width of the final container, and will be substantially equal to the width of said final container.
Preferentemente, los medios de sujeción de la lámina al sistema de arrastre por cadenas son pinzas, y dependiendo de las dimensiones del envase a fabricar el número de las mismas variará.Preferably, the means for fastening the sheet to the chain drive system are tweezers, and depending on the dimensions of the package to be manufactured, the number of them will vary.
De esta manera, los medios de sujeción a las cadenas enganchan en las dos bases longitudinales de la lámina inferior estrechada y sujetan la misma tensada a la cadena de arrastre, mientras que las dos varillas sujetan la citada lámina por las dos bases transversales, a la vez que hacen de separación de cada uno de los envases en serie. Convenientemente, se prevén dos varillas para sujetar transversalmente a las dos cadenas la lámina inferior estrechada, disponiéndose las varillas separadas una distancia tal según sean las dimensiones del envase a fabricar, sensiblemente igual a la largura del envase final. La ubicación de las varillas en el sistema de arrastre es fija, ya que cada sistema de arrastre se diseña exclusivamente para un envase determinado; sin embargo, se prevé la posibilidad de prescindir de una de cada dos varillas, de manera que la distancia entre varillas es el doble y el envase fabricado tendrá la misma anchura y el doble de largura, con lo que un mismo sistema de arrastre puede conformar dos envases de distinto tamaño.In this way, the means for fastening the chains engage in the two longitudinal bases of the narrowed lower sheet and hold the same tensioned to the drag chain, while the two rods hold the said sheet by the two transverse bases, to the Once they separate each of the packages in series. Conveniently, two rods are provided to fasten the narrowed lower sheet transversely to the two chains, the rods being disposed a distance according to the dimensions of the package to be manufactured, substantially equal to the length of the final container. The location of the rods in the drag system is fixed, since each drag system is designed exclusively for a particular container; however, the possibility of dispensing with one of every two rods is foreseen, so that the distance between rods is double and the manufactured container will have the same width and twice the length, so that the same drag system can form Two different sized containers.
Adicionalmente, se prevén unos medios de apoyo en la parte inferior de la cadena de arrastre, tales como unos rodillos o una superficie horizontal, para que al introducir el producto y conformar la concavidad de la lámina inferior el mismo se asiente encima del citado apoyo, para así evitar que la lámina se tense demasiado.Additionally, support means are provided at the bottom of the drive chain, such as rollers or a horizontal surface, so that when introduce the product and form the concavity of the lower sheet it sits on top of said support, in order to prevent the sheet from getting too tight.
El procedimiento preconizado puede ser usado para la fabricación de un única cavidad por cada envase, tal y como se ha detallado anteriormente, o bien para la fabricación de múltiples cavidades por cada envase, conocidos como envases "pack", los cuales son habituales en los procesos automatizados con grandes series, y utilizan una sola lámina inferior y superior para fabricar de una sola vez diversas cavidades, y posteriormente se pueden troquelar para obtener envases individuales .The recommended procedure can be used for the manufacture of a single cavity for each container, as detailed above, or for the manufacture of multiple cavities for each container, known as "pack" packages, which are common in automated processes with large series, and use a single lower and upper sheet to manufacture several cavities at once, and then they can be punched out to obtain individual packages.
Para realizar este tipo de envases se utiliza el mismo procedimiento de acortar la anchura de la lámina inferior, sujetarla al sistema de arrastre por sus cuatro bases y aprovechar el peso del producto para desplegar la lámina, con la particularidad de que se disponen uno o más separadores intermedios dispuestos paralelos a las cadenas con medios de sujeción a ambos lados, de manera que la lámina se sujeta longitudinalmente por más de dos bases .To make this type of packaging, the same procedure is used to shorten the width of the lower sheet, hold it to the drag system by its four bases and take advantage of the weight of the product to deploy the sheet, with the particularity that one or more are arranged intermediate separators arranged parallel to the chains with fastening means on both sides, so that the sheet is held longitudinally by more than two bases.
Especialmente, el presente procedimiento se utiliza en procesos de envasado con etapas de retractilado final o pre-retractilado de las láminas.Especially, the present process is used in packaging processes with stages of final shrinking or pre-shrinking of the sheets.
La solución de eliminar la etapa de conformado por calor permite solventar los problemas asociados al estiramiento del plástico, y también reduce costes de fabricación del envase, puesto que no se requiere una galga de plástico más gruesa que la lámina final y se eliminan los costes asociados a la generación de calor; y además al no requerir de un molde fijo el sistema ofrece una mayor versatilidad.The solution of eliminating the heat forming stage allows to solve the problems associated with the stretching of the plastic, and also reduces manufacturing costs of the container, since a thicker plastic gauge is not required than the final sheet and the associated costs are eliminated to heat generation; and in addition to not requiring a fixed mold the system offers greater versatility.
Otros detalles y características se irán poniendo de manifiesto en el transcurso de la descripción, que a continuación se da, en los que se hace referencia a los dibujos que a esta memoria se acompaña en la que se representan las distintas partes del procedimiento, a título ilustrativo pero no limitativo de la invención.Other details and features will be revealed in the course of the description, which is given below, in which it is made Reference to the drawings attached hereto in which the various parts of the process are represented, by way of illustration but not limited to the invention.
Sigue a continuación una relación numerada de las partes principales del procedimiento preconizado que se indican con números en las figuras anexas ;Following is a numbered list of the main parts of the recommended procedure indicated by numbers in the attached figures;
(10)- Bobina inferior; (H)- Lámina inferior;(10) - Lower coil; (H) - Bottom sheet;
(12)- Lámina superior;(12) - Top sheet;
(13)- Lámina inferior estrechada;(13) - Narrowed lower sheet;
(14)- Pliegue longitudinal;(14) - Longitudinal fold;
(15)- Producto; (16)- Pinces;(15) - Product; (16) - Pinces;
(17)- Cadena;(17) - Chain;
(18)- Bobina superior;(18) - Upper coil;
(19)- Superficie cóncava de (27);(19) - Concave surface of (27);
(20)- Varillas transversales; (21)- Estación de desenrollado;(20) - Cross rods; (21) - Unwind station;
(22)- Estación de estrechamiento de la lámina inferior (11) ;(22) - Narrowing station of the lower sheet (11);
(23)- Estación de posicionamiento de lámina estrechada (13) en el sistema de arrastre; (24)- Estación de introducción del producto (15) y conformación de superficie inferior (19) del envase (27) ;(23) - Narrow sheet positioning station (13) in the drive system; (24) - Product introduction station (15) and lower surface conformation (19) of the container (27);
(25)- Estación de posicionamiento de la lámina superior (12 ) ; (26)- Estación de vacío y soldadura del contorno(25) - Top sheet positioning station (12); (26) - Vacuum and contour welding station
(28) ;(28);
(27)- Envase;(27) - Container;
(28)- Contorno del (27);(28) - Outline of (27);
(29)- Base transversal de (13); (30)- Base longitudinal de (13); (31)- Anchura de (11); (32)- Banda soldada; (33)- Dispositivo de bufado; (34)- Rodillos de apoyo; (35)- Lámina inferior desplegada;(29) - Transverse base of (13); (30) - Longitudinal base of (13); (31) - Width of (11); (32) - Welded band; (33) - Snorting device; (34) - Support rollers; (35) - Deployed bottom sheet;
(36)- Separador intermedio; y (37)- Cavidad.(36) - Intermediate separator; and (37) - Cavity.
La figura n° 1 es una vista en planta de un esquema del proceso de envasado al vacío de un producto (15) a partir de dos láminas distintas, según lo que es el objeto de la invención.Figure 1 is a plan view of a scheme of the vacuum packaging process of a product (15) from two different sheets, according to what is the object of the invention.
La figura n° 2 es una vista en alzado frontal de un esquema del proceso de envasado al vacío de un producto (15) a partir de dos láminas distintas, según lo que es el objeto de la invención.Figure 2 is a front elevational view of a scheme of the vacuum packaging process of a product (15) from two different sheets, according to what is the object of the invention.
Las figuras n° 3-6 son vistas en alzado lateral de las etapas sucesivas de adaptación de la lámina inferior estrechada (13) sostenida tensada por el sistema de arrastre hasta alcanzar la concavidad de la superficie inferior (19) del envase (27), según lo que es el objeto de la invención.Figures 3-6 are side elevation views of the successive stages of adaptation of the narrowed bottom sheet (13) held tensioned by the drag system until the bottom surface concavity (19) of the container (27) is reached, according to what is the object of the invention.
La figura n° 7 es una vista en planta de un esquema del proceso de envasado al vacío a partir de dos láminas distintas para obtener un envase tipo "pack" con dos cavidades (37), según lo que es el objeto de la invención .Figure 7 is a plan view of a scheme of the vacuum packaging process from two different sheets to obtain a "pack" type container with two cavities (37), according to what is the object of the invention.
Tal y como puede verse en las figuras na 1 y 2, el proceso automatizado de envasado al vacío de un producto (15) a partir de dos láminas distintas consta de distintas etapas sucesivas, primeramente la lámina inferior (11) se desenrolla (21) de la bobina inferiorAs can be seen in figures n to 1 and 2, the automated vacuum packaging process of a product (15) from two different sheets consists of different successive stages, first the bottom sheet (11) is unwound (21 ) of the lower coil
(10) , seguidamente la misma entra en la estación estrechamiento de la lámina (22) donde se acorta su anchura (31) hasta una anchura (29) mediante un pliegue longitudinal central (14) , luego la lámina inferior estrechada (13) entra en el sistema de arrastre (23), sujetándose en posición tensada a las dos cadenas (17) a través de varias pinzas (16) y transversalmente con dos varillas (20), a continuación se procede a introducir el producto (15) por la parte superior con lo que la lámina estrechada (13) se despliega o desdobla merced a la fuerza de su propio peso (24) hasta conformar la lámina desplegada (35), la cual presenta una superficie cóncava (19) debido al apoyo del producto (15) . Adicionalmente, se puede aplicar otros medios de ayuda como la aplicación de presión o el proceso de bufado para facilitar el despliegue de la lámina (13). Seguidamente se posiciona (25) la lámina superior (12) provinente de la bobina superior (18) sobre el producto (15), ver figura n2 2, y finalmente se llega a la estación de soldado (26) en donde se cierra el contorno del envase (28) mediante cuatro bandas soldadas (32), una por lado. De esta manera, el envase (27) tendrá una configuración prismática de base sensiblemente rectangular.(10), then it enters the narrowing station of the sheet (22) where its width (31) is shortened to a width (29) by a central longitudinal fold (14), then the bottom sheet narrowed (13) enters the drag system (23), being held in tensioned position to the two chains (17) through several clamps (16) and transversely with two rods (20), then the product is introduced (15) by the upper part whereby the narrowed sheet (13) unfolds or unfolds thanks to the force of its own weight (24) until the unfolded sheet (35) is formed, which has a concave surface (19) due to to product support (15). Additionally, other support means such as pressure application or the buffing process can be applied to facilitate the deployment of the sheet (13). Next, the upper sheet (12) from the upper coil (18) is positioned (25) on the product (15), see figure 2 2, and finally the soldier station (26) is reached where the contour of the container (28) by four welded bands (32), one per side. In this way, the container (27) will have a prismatic configuration of substantially rectangular base.
En la figura n2 2 se pueden apreciar los rodillos de apoyo (34) en la parte inferior de las cadenas (17) para soportar el peso del producto (15), y por otro lado se muestra como la lámina inferior se apoya por sus bases transversales (29) a las varillas (20), de configuración cilindrica, conduciendo la lámina por la parte superior de las mismas.In the figure n 2 2 you can see the support rollers (34) in the lower part of the chains (17) to support the weight of the product (15), and on the other hand it is shown how the lower sheet is supported by its transverse bases (29) to the rods (20), of cylindrical configuration, leading the sheet through the upper part thereof.
En la presente realización de lo que es el objeto de la invención el envase (27) obtenido por el procedimiento preconizado presenta una configuración prismática de base rectangular, ver figura n2 1, sin embargo, también se contempla la posibilidad de realizar envases con otras formas, por ejemplo de base elíptica, con lo que en vez de realizar cuatro bandas soldadas (32) se realizaría una de sola resiguiendo el contorno perimetral del envase (27) .In the present embodiment of what is the object of the invention, the container (27) obtained by the recommended method has a prismatic configuration with a rectangular base, see figure 2 1, however, the possibility of packaging with other forms, for example elliptical base, so instead of making four welded bands (32) one would be done only by following the perimeter contour of the container (27).
En las figuras na 3-6 se observan los pasos sucesivos de despliegue de la lámina (13) desde que está sujetada de forma tensada al sistema de arrastre por medio de varias pinzas (16), ver figura n2 3, hasta que la misma adquiere la concavidad (19) en la superficie inferior del envase (27), ver figura n2 6, merced a la aplicación de bufado (33) y a la fuerza del peso del producto (15), ver figuras n2 4-5.In the figures n to 3-6 the successive steps of unfolding the sheet (13) are observed since it is attached in a tensioned way to the drag system by means of several clamps (16), see figure n 2 3, until the it acquires the concavity (19) on the lower surface of the container (27), see figure n 2 6, thanks to the application of snorting (33) and the strength of the weight of the product (15), see figures n 2 4-5 .
Con referencia a la figura ns 7 , se muestra un esquema del procedimiento preconizado para la fabricación específica de envases tipo "pack", concretamente con dos cavidades (37) iguales. El procedimiento es muy parecido al de un envase individual pero con la diferencia de que se dispone de un separador intermedio (36) paralelo a las dos cadenas (17) que permite la creación de dos cavidades (37) distintas. Por otro lado, en vez de realizarse un único pliegue (14) para acortar la lámina inferior (11) se realizan dos, uno por cada cavidad (37) . Finalmente en cambio de efectuar cuatro bandas soldadas (32) son cinco.With reference to figure n s 7, a scheme of the recommended procedure for the specific manufacture of "pack" type packages is shown, specifically with two equal cavities (37). The procedure is very similar to that of an individual package but with the difference that there is an intermediate separator (36) parallel to the two chains (17) that allows the creation of two different cavities (37). On the other hand, instead of making a single fold (14) to shorten the lower sheet (11), two are made, one for each cavity (37). Finally, instead of making four welded bands (32) there are five.
Descrito suficientemente la presente invención en correspondencia con las figuras anexas, fácil es comprender que podrán introducirse en la misma cualesquiera modificaciones de detalle que estimen convenientes, siempre y cuando con las modificaciones que se introduzcan no se altere la esencia de la invención que queda resumida en las siguiente reivindicaciones . Described sufficiently the present invention in correspondence with the attached figures, it is easy to understand that any modifications of detail that they deem convenient may be introduced therein, provided that with the modifications that are introduced the essence of the invention that is summarized in The following claims.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP06841770A EP1980492B1 (en) | 2006-02-01 | 2006-12-21 | Method for forming the lower surface of a container without the application of heat in a vacuum packaging process |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200600213A ES2281279B1 (en) | 2006-02-01 | 2006-02-01 | PROCEDURE TO CONFORM THE LOWER SURFACE OF A CONTAINER WITHOUT APPLICATION OF HEAT IN A VACUUM PACKING PROCESS. |
| ESP200600213 | 2006-02-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007088221A1 true WO2007088221A1 (en) | 2007-08-09 |
Family
ID=38327135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/ES2006/000718 Ceased WO2007088221A1 (en) | 2006-02-01 | 2006-12-21 | Method for forming the lower surface of a container without the application of heat in a vacuum packaging process |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1980492B1 (en) |
| ES (1) | ES2281279B1 (en) |
| WO (1) | WO2007088221A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150210455A1 (en) * | 2014-01-27 | 2015-07-30 | Peter Tillstrom | Blister card systems and methods for assemblying the systems |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2405120A1 (en) * | 1977-10-08 | 1979-05-04 | Applic Plastique Mec Elec | PROCESS FOR STARTING AND STOPPING A THERMOFORMING MACHINE AND DEVICE FOR IMPLEMENTING THIS PROCESS |
| US5775060A (en) * | 1991-07-03 | 1998-07-07 | Soremartec S.A. | Process for forming wrappers of thin sheet materials and a device for carrying out same |
| JP2002160311A (en) * | 2000-09-18 | 2002-06-04 | Toppan Printing Co Ltd | Manufacturing method of molded paper tray |
| WO2004106162A2 (en) * | 2003-05-30 | 2004-12-09 | Kourtoglou S.A. | Plastic packaging container as well as a molding station, a packaging machine and a method of producing the packaging container |
-
2006
- 2006-02-01 ES ES200600213A patent/ES2281279B1/en not_active Expired - Fee Related
- 2006-12-21 EP EP06841770A patent/EP1980492B1/en not_active Not-in-force
- 2006-12-21 WO PCT/ES2006/000718 patent/WO2007088221A1/en not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2405120A1 (en) * | 1977-10-08 | 1979-05-04 | Applic Plastique Mec Elec | PROCESS FOR STARTING AND STOPPING A THERMOFORMING MACHINE AND DEVICE FOR IMPLEMENTING THIS PROCESS |
| US5775060A (en) * | 1991-07-03 | 1998-07-07 | Soremartec S.A. | Process for forming wrappers of thin sheet materials and a device for carrying out same |
| JP2002160311A (en) * | 2000-09-18 | 2002-06-04 | Toppan Printing Co Ltd | Manufacturing method of molded paper tray |
| WO2004106162A2 (en) * | 2003-05-30 | 2004-12-09 | Kourtoglou S.A. | Plastic packaging container as well as a molding station, a packaging machine and a method of producing the packaging container |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1980492A4 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150210455A1 (en) * | 2014-01-27 | 2015-07-30 | Peter Tillstrom | Blister card systems and methods for assemblying the systems |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2281279B1 (en) | 2008-06-01 |
| EP1980492A1 (en) | 2008-10-15 |
| ES2281279A1 (en) | 2007-09-16 |
| EP1980492A4 (en) | 2012-03-07 |
| EP1980492B1 (en) | 2012-11-14 |
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