EP1836110A1 - Plastic packaging and production and packaging method - Google Patents

Plastic packaging and production and packaging method

Info

Publication number
EP1836110A1
EP1836110A1 EP06701142A EP06701142A EP1836110A1 EP 1836110 A1 EP1836110 A1 EP 1836110A1 EP 06701142 A EP06701142 A EP 06701142A EP 06701142 A EP06701142 A EP 06701142A EP 1836110 A1 EP1836110 A1 EP 1836110A1
Authority
EP
European Patent Office
Prior art keywords
sheet
packaging
triangular
manufacturing
film
Prior art date
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.)
Granted
Application number
EP06701142A
Other languages
German (de)
French (fr)
Other versions
EP1836110B1 (en
Inventor
Alain Gaille
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unibel SA
Original Assignee
Kimaco SA
Fromageries Bel SA
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 Kimaco SA, Fromageries Bel SA filed Critical Kimaco SA
Publication of EP1836110A1 publication Critical patent/EP1836110A1/en
Application granted granted Critical
Publication of EP1836110B1 publication Critical patent/EP1836110B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B65B25/00—Packaging other articles presenting special problems
    • B65B25/06—Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products
    • B65B25/068—Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products of cheese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/66—Inserted or applied tearing-strings or like flexible elements
    • B65D75/68—Inserted or applied tearing-strings or like flexible elements extending through wrapper closure or between wrapper layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
    • B65D85/76—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials for cheese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2301/00—Details of blanks
    • B65D2301/10—Blanks mutually positioned to minimise waste material upon cutting out the individual blank from a continuous or large sheet

Definitions

  • the invention relates to a plastic package, its manufacturing method and a manufacturing device. It is particularly suited to the field of food packaging for parallelepipedic, prismatic or cylindrical packaging, and thus also relates to a method of packaging a food product.
  • a first solution of the prior art concerns an aluminum packaging as disclosed by the patent FR2012286. Its manufacturing process includes the folding and joining of several aluminum sheets. Aluminum is a product whose obtaining and recycling require a great expenditure of energy and it is desirable not to use it.
  • the document EP0803439 describes a polypropylene packaging, manufactured by the combination of three plastic sheets, one of which is shaped around a mandrel.
  • the disadvantage of this manufacturing process is its complexity because it requires the cutting and joining of three sheets and a construction around a mandrel.
  • WO2004 / 052753 is based on the cutting of a main sheet, which represents a large area of the finished package and comprises a protruding portion defining an opening tab, to which a cover is added.
  • the disadvantage of this method stems from the fact that the complex shape of the proposed sheet leads to significant material drops when it is cut from a rectangular plastic film.
  • the film is coated with an adhesive to promote hot glue on the lid and get the seal of the package, there is a risk of getting the glue of the opening tab on the lid since it is also coated with this glue and that the entire
  • the process is based on heating and optionally hot food content during its packaging, which makes it difficult to use.
  • a general object of the present invention is to provide a package and its manufacturing method which have the advantages of the prior art without the disadvantages.
  • a first object of the invention is to provide a packaging and its manufacturing process simpler, economic and ecological.
  • a second object of the invention is to provide a method of manufacturing a packaging adapted to the field of food packaging.
  • the invention is based on a method of manufacturing a package, characterized in that it comprises the following steps:
  • the film is a plastic film, one side of which is coated with a heat-sealable material.
  • Step a) may further comprise a step of transporting, reversing and welding a triangular fall of the film on the projecting triangular portion of corresponding size, bringing into contact the two heat-sealable coated surfaces of the two parts, for form the opening tab.
  • Steps b) and d) may include hot bends.
  • the method may include a step of cutting a thin tear strip and a step of bonding the tear strip to the sheet so that it extends from the end of the opening tab to a length important leaflet, and / or a step of making pre-cuts on the opening tab.
  • the invention also relates to a package comprising a main sheet occupying its largest area, comprising a cover, flaps of the leaf folded on the cover, characterized in that one of the flaps comprises a substantially triangular projecting portion, the oblique edge of which delimiting the triangular portion is symmetrical about its center so that it can place several sheets of the same form staggered on the same film.
  • the angular portions of the sheet, opposite the projecting triangular portion have a rectangular shape whose angle is truncated, defining a triangle of dimension approximately equal to half of the opening tongue.
  • the package comprises a main sheet having a rectangular central portion, four side portions, one of which is extended by the substantially projecting triangular portion, four truncated rectangular corner portions, the sheet being folded to form a parallelepiped package rectangle.
  • the main sheet of the package may be of plastic material, for example polypropylene.
  • FIG. 1a shows a view of a plastic sheet in a step at the beginning of the packaging manufacturing process, according to one embodiment of the invention
  • Figure 1b shows several plastic sheets on the same film before cutting
  • FIG. 2 represents a schematic view of a first step of the method of manufacturing the package according to one embodiment of the invention
  • Figure 3 shows the shell obtained after this first step
  • FIG. 4 represents a schematic view of a second step of the method of manufacturing the package according to one embodiment of the invention
  • FIG. 5 represents a schematic view of a third step of the method of manufacturing the package according to one embodiment of the invention
  • Figure 6 shows a schematic view of a fourth step of the method of manufacturing the package according to one embodiment of the invention
  • Figure 7 shows a schematic view of a fifth step of the method of manufacturing the package according to one embodiment of the invention
  • Figure 8 shows a schematic view of a sixth step of the method of manufacturing the package according to one embodiment of the invention
  • Figure 9 shows a schematic view of the end of the packaging manufacturing method according to one embodiment of the invention
  • Figure 10 shows a view of the finished package.
  • the embodiment shown represents an application in the field of food packaging, for the packaging of a cheese in a rectangular parallelepiped shaped packaging.
  • the method of manufacturing the package is based on a plastic sheet 1, for example polypropylene, illustrated in Figure 1a, one side, which corresponds to the inner surface of the manufactured package is coated with a heat sealable material.
  • This sheet comprises a central zone 2, four lateral bands 3, one of which is extended by a projecting triangular tip 4 which is intended to form a tongue to facilitate the opening of the package.
  • the sheet 1 finally comprises four angular zones or ears 5 which will be folded along a fold line 6.
  • Two tear strips 7 extend from the triangular point 4 to the opposite lateral strip, along the edges of the central portion 2.
  • the sheets 1 are cut from a rectangular film 8 illustrated in FIG. 1b.
  • the oblique edge 4a going from the point A to the point B of the sheet 1, drawing the contour of an angle 5 and the tip 4 of the sheet 1, also defines this sheet 1 with respect to another sheet placed in staggered rows on the film 8.
  • this edge 4a has a symmetrical shape around from its central point O;
  • the point B is at the end of the tip of a sheet 1 and the point A at the end of the tip of the sheet placed in a quincunx and the two sheets have exactly the same shape.
  • the triangular element 9 is transported, turned over and glued to the projecting tip 4 of the sheet 1, this step can be implemented using a device which will be described later, of so as to bring into contact the two heat-sealable material-coated surfaces of the two triangular elements 4 and 9 and to obtain their soldering after heating.
  • a resistant opening tongue 10 is thus obtained by the union of the two elements 4 and 9.
  • the triangular element 9, obtained by truncating the angular portions 5 of the sheets 1 opposite to the projecting point 4, is provided with a dimension corresponding to that of the projecting tip 4 of the sheet 1.
  • the tearing primers 11 are also provided at this opening tab 10. The preparation of the sheet 1 thus formed does not generate any plastic material drop.
  • the sheet 1 is lowered through a not shown training corridor, which progressively folds the ears 5 along their fold line 6 with parts in a helix from the training corridor. The latter further causes the folding of the side portions 3.
  • the folded sheet 1 is placed in a bucket 12 by a punch 13.
  • the sheet 1 is also heated. The heat makes it possible to obtain a definitive folding of the plastic material of the sheet 1, by modifying its memory, to form a shell 15 illustrated in FIG. 3 in the cup 12.
  • the bottom 14 of this cup is movable by a piston system and is fixed so as to form a bucket 12 of depth equal to the width of the flaps 3 of the sheet 1.
  • the second step, illustrated in FIG. 4, corresponds to the filling of the shell 15 with a food substance 11, cheese, for example. This substance does not fill the whole height of the shell.
  • the third step consists in laying a cover 16 of plastic surface corresponding to that of the central zone 2 of the sheet 1, which forms the base of the shell 15.
  • a fourth step illustrated in FIG. 6 the bottom 14 of the bucket 12 is raised so that the part 17 of the four lateral walls 3 of the shell situated above the cover 16 protrudes from the upper surface of the bucket 12. the folding of two of these parts 17 placed on opposite sides, which forms flaps 17, with two clamps 18 on each side and a counter piece 19 placed on the lid 16 so as not to crush the contents 11 of the packaging in manufacture.
  • the four corners of the flaps 17 are folded, heated and pressed in order to remain in place by this hot gluing.
  • FIG. 7 illustrates a fifth step by which a hot beater 21 will fold down the last two opposite lateral surfaces 17 by pressing them against a counterpart 20 disposed on the lid 16. At the end of this step, the four flaps 17 of the four lateral sides 3 are folded over the cover 16. This step can be repeated a second times to ensure success and prevent one or more flaps from unfolding.
  • Figure 8 illustrates a last step by which a hot press 22 squeezes the entire upper surface of the package to weld the entire surface of the flaps 17 on the cover 16 and ensure the tightness of the package.
  • the bottom 14 of the bucket 12 is lowered so that the package is fully depressed in the bucket 12 so that the press 22 remains retained by the upper lateral surface of the bucket 12 and can penetrate only a few millimeters, avoiding the crushing of the packaging.
  • Only the tongue 10 of the triangular tip of one of the flaps 17 is not glued to the cover 16 because it does not include a heat-sealable coating on its surface. It can thus be easily manually grasped and serves as the opening tab of the package.
  • the completed package 24, shown in FIG. 10 is taken out of the bucket 12 by the piston 14 of the bottom of the bucket which raises it completely out of the bucket, so that it is guided by means of transport 23 and stored with the other finished products.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Abstract

The invention relates to a packaging and to a method for producing a packaging, comprising the following steps: cutting out sheets (1) having a lateral strip (3) lengthened by an outwardly projecting, in essence, triangular point (4) in a film (8) upon which the sheets (1) are placed in a staggered manner so that this cutting out generates few or no scraps; folding a sheet (1) to form a shell (15); adding a lid (16); folding the flaps (17) onto the lid (16), the flap (17) having the outwardly projecting, in essence, triangular part (4) forming a lid tongue (10).

Description

Emballage plastique et procédé de fabrication et de conditionnement Plastic packaging and manufacturing and packaging process
L'invention concerne un emballage plastique, son procédé de fabrication et un dispositif de fabrication. Elle est particulièrement adaptée au domaine de l'emballage alimentaire, pour des emballages de forme parallélépipédique, prismatique ou cylindrique, et concerne donc aussi un procédé de conditionnement d'un produit alimentaire.The invention relates to a plastic package, its manufacturing method and a manufacturing device. It is particularly suited to the field of food packaging for parallelepipedic, prismatic or cylindrical packaging, and thus also relates to a method of packaging a food product.
Une première solution de l'art antérieur concerne un emballage en aluminium tel que divulgué par le brevet FR2012286. Son procédé de fabrication comprend le pliage et la réunion de plusieurs feuillets aluminium. L'aluminium est un produit dont l'obtention et le recyclage nécessitent une grande dépense d'énergie et il est souhaitable de ne pas l'utiliser.A first solution of the prior art concerns an aluminum packaging as disclosed by the patent FR2012286. Its manufacturing process includes the folding and joining of several aluminum sheets. Aluminum is a product whose obtaining and recycling require a great expenditure of energy and it is desirable not to use it.
Pour cela, le document EP0803439 décrit un emballage en polypropylène, fabriqué par la réunion de trois feuillets en plastique, dont l'un est mis en forme autour d'un mandrin. L'inconvénient de ce procédé de fabrication est sa complexité car il nécessite le découpage et la réunion de trois feuillets et une construction autour d'un mandrin.For this, the document EP0803439 describes a polypropylene packaging, manufactured by the combination of three plastic sheets, one of which is shaped around a mandrel. The disadvantage of this manufacturing process is its complexity because it requires the cutting and joining of three sheets and a construction around a mandrel.
Pour résoudre les inconvénients de la solution précédente, un autre procédé de fabrication d'un emballage en plastique est décrit dans le document WO2004/052753, qui repose sur la découpe d'un feuillet principal, qui représente une grande surface de l'emballage fini et comprend une partie en saillie définissant une languette d'ouverture, sur lequel on ajoute un couvercle. L'inconvénient de ce procédé provient du fait que la forme complexe du feuillet proposé entraîne des chutes de matériau importantes lors de son découpage à partir d'un film plastique rectangulaire. De plus, le film étant enduit d'une colle pour favoriser des collages à chaud sur le couvercle et obtenir l'étanchéité de l'emballage, il y a un risque d'obtenir le collage de la languette d'ouverture sur le couvercle puisqu'elle est aussi enduite de cette colle et que l'ensemble du procédé repose sur des chauffages et sur un contenu alimentaire éventuellement chaud lors de son conditionnement, ce qui la rend difficilement utilisable.To overcome the disadvantages of the previous solution, another method of manufacturing a plastic package is described in WO2004 / 052753, which is based on the cutting of a main sheet, which represents a large area of the finished package and comprises a protruding portion defining an opening tab, to which a cover is added. The disadvantage of this method stems from the fact that the complex shape of the proposed sheet leads to significant material drops when it is cut from a rectangular plastic film. In addition, the film is coated with an adhesive to promote hot glue on the lid and get the seal of the package, there is a risk of getting the glue of the opening tab on the lid since it is also coated with this glue and that the entire The process is based on heating and optionally hot food content during its packaging, which makes it difficult to use.
Un objet général de la présente invention consiste à proposer un emballage et son procédé de fabrication qui présentent les avantages de l'art antérieur sans en avoir les inconvénients.A general object of the present invention is to provide a package and its manufacturing method which have the advantages of the prior art without the disadvantages.
Plus précisément, un premier objet de l'invention consiste à proposer un emballage et son procédé de fabrication plus simples, économiques et écologiques.More specifically, a first object of the invention is to provide a packaging and its manufacturing process simpler, economic and ecological.
Un second objet de l'invention consiste à proposer un procédé de fabrication d'un emballage adapté au domaine de l'emballage alimentaire.A second object of the invention is to provide a method of manufacturing a packaging adapted to the field of food packaging.
L'invention repose sur un procédé de fabrication d'un emballage, caractérisé en ce qu'il comprend les étapes suivantes :The invention is based on a method of manufacturing a package, characterized in that it comprises the following steps:
a) -découpage de feuillets dans un film sur lequel les feuillets sont disposés en quinconce de sorte que ce découpage génère peu ou pas de chute ;a) -cutting leaflets in a film on which the leaflets are staggered so that this cutting generates little or no fall;
b) pliage d'un feuillet pour former une coquille;b) folding a sheet to form a shell;
c) ajout d'un couvercle;c) adding a lid;
d) pliage de rabats sur le couvercle, un rabat comportant une partie sensiblement triangulaire en saillie formant une languette d'ouverture. Avantageusement, le film est un film plastique dont une face est enduite d'un matériau thermosoudable.d) folding flaps on the lid, a flap having a substantially triangular protruding portion forming an opening tab. Advantageously, the film is a plastic film, one side of which is coated with a heat-sealable material.
L'étape a) peut comprendre en outre une étape de transport, retournement et soudure d'une chute triangulaire du film sur la partie triangulaire en saillie de taille correspondante, en mettant en contact les deux faces enduites de matériau thermosoudable des deux parties, pour former la languette d'ouverture.Step a) may further comprise a step of transporting, reversing and welding a triangular fall of the film on the projecting triangular portion of corresponding size, bringing into contact the two heat-sealable coated surfaces of the two parts, for form the opening tab.
Les étapes b) et d) peuvent comprendre des pliages à chaud.Steps b) and d) may include hot bends.
Le procédé peut comprendre une étape de découpage d'une fine bande de déchirement et une étape de collage de cette bande de déchirement sur le feuillet, de sorte qu'elle s'étende depuis l'extrémité de la languette d'ouverture sur une longueur importante du feuillet, et/ou une étape consistant à réaliser des prédécoupes sur la languette d'ouverture.The method may include a step of cutting a thin tear strip and a step of bonding the tear strip to the sheet so that it extends from the end of the opening tab to a length important leaflet, and / or a step of making pre-cuts on the opening tab.
L'invention porte aussi sur un emballage comprenant un feuillet principal occupant sa plus grande surface, comprenant un couvercle, des rabats du feuillet rabattus sur le couvercle, caractérisé en ce que un des rabats comprend une partie sensiblement triangulaire en saillie, dont le bord oblique délimitant la partie triangulaire est symétrique autour de son centre de sorte de pouvoir placer plusieurs feuillets de même forme en quinconce sur un même film.The invention also relates to a package comprising a main sheet occupying its largest area, comprising a cover, flaps of the leaf folded on the cover, characterized in that one of the flaps comprises a substantially triangular projecting portion, the oblique edge of which delimiting the triangular portion is symmetrical about its center so that it can place several sheets of the same form staggered on the same film.
Les parties angulaires du feuillet, opposées à la partie triangulaire en saillie, présentent une forme rectangulaire dont un angle est tronqué, définissant un triangle de dimension environ égale à la moitié de la languette d'ouverture. Selon une variante, l'emballage comprend un feuillet principal qui présente une partie centrale rectangulaire, quatre parties latérales dont une est prolongée par la partie sensiblement triangulaire en saillie, quatre parties d'angle rectangulaires tronquées, le feuillet étant plié pour former un emballage parallélépipédique rectangle.The angular portions of the sheet, opposite the projecting triangular portion, have a rectangular shape whose angle is truncated, defining a triangle of dimension approximately equal to half of the opening tongue. Alternatively, the package comprises a main sheet having a rectangular central portion, four side portions, one of which is extended by the substantially projecting triangular portion, four truncated rectangular corner portions, the sheet being folded to form a parallelepiped package rectangle.
Le feuillet principal de l'emballage peut être en matériau plastique, par exemple du polypropylène.The main sheet of the package may be of plastic material, for example polypropylene.
Cet objet, caractéristiques et avantages de la présente invention seront exposés en détail dans la description suivante d'un mode d'exécution particulier fait à titre non-limitatif en relation avec les figures jointes parmi lesquelles :This object, features and advantages of the present invention will be set forth in detail in the following description of a particular embodiment made in a non-limiting manner in relation to the attached figures among which:
La figure 1a représente une vue d'un feuillet plastique dans une étape au début du procédé de fabrication de l'emballage, selon un mode d'exécution de l'invention ; la figure 1 b représente plusieurs feuillets plastique sur un même film avant leur découpage ; la figure 2 représente une vue schématique d'une première étape du procédé de fabrication de l'emballage selon un mode d'exécution de l'invention ; la figure 3 représente la coquille obtenue après cette première étape ; la figure 4 représente une vue schématique d'une seconde étape du procédé de fabrication de l'emballage selon un mode d'exécution de l'invention ; la figure 5 représente une vue schématique d'une troisième étape du procédé de fabrication de l'emballage selon un mode d'exécution de l'invention ; la figure 6 représente une vue schématique d'une quatrième étape du procédé de fabrication de l'emballage selon un mode d'exécution de l'invention ; la figure 7 représente une vue schématique d'une cinquième étape du procédé de fabrication de l'emballage selon un mode d'exécution de l'invention ; la figure 8 représente une vue schématique d'une sixième étape du procédé de fabrication de l'emballage selon un mode d'exécution de l'invention ; la figure 9 représente une vue schématique de la fin du procédé de fabrication de l'emballage selon un mode d'exécution de l'invention ; la figure 10 représente une vue de l'emballage fini.Figure 1a shows a view of a plastic sheet in a step at the beginning of the packaging manufacturing process, according to one embodiment of the invention; Figure 1b shows several plastic sheets on the same film before cutting; FIG. 2 represents a schematic view of a first step of the method of manufacturing the package according to one embodiment of the invention; Figure 3 shows the shell obtained after this first step; FIG. 4 represents a schematic view of a second step of the method of manufacturing the package according to one embodiment of the invention; FIG. 5 represents a schematic view of a third step of the method of manufacturing the package according to one embodiment of the invention; Figure 6 shows a schematic view of a fourth step of the method of manufacturing the package according to one embodiment of the invention; Figure 7 shows a schematic view of a fifth step of the method of manufacturing the package according to one embodiment of the invention; Figure 8 shows a schematic view of a sixth step of the method of manufacturing the package according to one embodiment of the invention; Figure 9 shows a schematic view of the end of the packaging manufacturing method according to one embodiment of the invention; Figure 10 shows a view of the finished package.
Le mode d'exécution représenté concerne une application dans le domaine de l'emballage alimentaire, pour le conditionnement d'un fromage dans un emballage de forme parallélépipède rectangle.The embodiment shown represents an application in the field of food packaging, for the packaging of a cheese in a rectangular parallelepiped shaped packaging.
Le procédé de fabrication de l'emballage repose sur un feuillet plastique 1 , par exemple en polypropylène, illustré sur la figure 1a, dont une face, qui correspondra à la surface intérieure de l'emballage fabriqué est enduite d'un matériau thermosoudable. Cette feuille comprend une zone centrale 2, quatre bandes latérales 3 dont une est prolongée par une pointe triangulaire 4 en saillie qui est destinée à former une languette pour faciliter l'ouverture de l'emballage. Le feuillet 1 comprend enfin quatre zones angulaires ou oreilles 5 qui seront pliées selon une ligne de pliage 6. Deux bandes de déchirement 7 s'étendent depuis la pointe triangulaire 4 jusqu'à la bande latérale opposée, en longeant les bords de la partie centrale 2. Les feuillets 1 sont découpés depuis un film 8 rectangulaire illustré en figure 1 b. Leur forme est telle qu'ils sont répartis en quinconce sur le film 8, ne formant qu'un petit élément triangulaire 9 comme chute après le découpage du film 8. Pour cela, le bord oblique 4a, allant du point A au point B du feuillet 1 , dessinant le contour d'un angle 5 et de la pointe 4 du feuillet 1 , délimite aussi ce feuillet 1 par rapport à un autre feuillet placé en quinconce sur le film 8. Pour cela, ce bord 4a a une forme symétrique autour de son point central O ; ainsi, le point B est à l'extrémité de la pointe d'un feuillet 1 et le point A à l'extrémité de la pointe du feuillet placé en quinconce et les deux feuillets ont exactement la même forme.The method of manufacturing the package is based on a plastic sheet 1, for example polypropylene, illustrated in Figure 1a, one side, which corresponds to the inner surface of the manufactured package is coated with a heat sealable material. This sheet comprises a central zone 2, four lateral bands 3, one of which is extended by a projecting triangular tip 4 which is intended to form a tongue to facilitate the opening of the package. The sheet 1 finally comprises four angular zones or ears 5 which will be folded along a fold line 6. Two tear strips 7 extend from the triangular point 4 to the opposite lateral strip, along the edges of the central portion 2. The sheets 1 are cut from a rectangular film 8 illustrated in FIG. 1b. Their shape is such that they are distributed in staggered rows on the film 8, forming only a small triangular element 9 as a drop after the cutting of the film 8. For this, the oblique edge 4a, going from the point A to the point B of the sheet 1, drawing the contour of an angle 5 and the tip 4 of the sheet 1, also defines this sheet 1 with respect to another sheet placed in staggered rows on the film 8. For this, this edge 4a has a symmetrical shape around from its central point O; Thus, the point B is at the end of the tip of a sheet 1 and the point A at the end of the tip of the sheet placed in a quincunx and the two sheets have exactly the same shape.
Après ce découpage du film 8, l'élément triangulaire 9 est transporté, retourné et collé sur la pointe en saillie 4 du feuillet 1 , cette étape pouvant être mise en œuvre à l'aide d'un dispositif qui sera décrit plus loin, de sorte de mettre en contact les deux faces enduites de matériau thermosoudable des deux éléments triangulaires 4 et 9 et d'obtenir leur soudure après un chauffage. On obtient ainsi une languette d'ouverture 10 résistante par la réunion des deux éléments 4 et 9. L'élément triangulaire 9, obtenu en tronquant les parties angulaires 5 des feuillets 1 opposées à la pointe en saillie 4, est prévu de dimension correspondant à celle de la pointe en saillie 4 du feuillet 1. Des amorces de déchirement 11 sont aussi prévus au niveau de cette languette d'ouverture 10. L'élaboration du feuillet 1 ainsi formé ne génère aucune chute de matériau plastique.After this cutting of the film 8, the triangular element 9 is transported, turned over and glued to the projecting tip 4 of the sheet 1, this step can be implemented using a device which will be described later, of so as to bring into contact the two heat-sealable material-coated surfaces of the two triangular elements 4 and 9 and to obtain their soldering after heating. A resistant opening tongue 10 is thus obtained by the union of the two elements 4 and 9. The triangular element 9, obtained by truncating the angular portions 5 of the sheets 1 opposite to the projecting point 4, is provided with a dimension corresponding to that of the projecting tip 4 of the sheet 1. The tearing primers 11 are also provided at this opening tab 10. The preparation of the sheet 1 thus formed does not generate any plastic material drop.
Ensuite, dans une première étape de fabrication représentée schématiquement en figure 2, le feuillet 1 est descendu à travers un couloir de formation non représenté, qui réalise progressivement un pliage des oreilles 5 le long de leur ligne de pliage 6 grâce à des parties en hélice du couloir de formation. Ce dernier provoque de plus le rabattement des parties latérales 3. En sortie du couloir, le feuillet 1 ainsi plié est placé dans un godet 12 par un poinçon 13. Durant toute la phase de descente, le feuillet 1 est aussi chauffé. La chaleur permet d'obtenir un pliage définitif du matériau plastique du feuillet 1 , en modifiant sa mémoire, pour former une coquille 15 illustrée en figure 3 dans le godet 12. Le fond 14 de ce godet est mobile par un système à piston et est fixé de manière à former un godet 12 de profondeur égale à la largeur des rabats 3 du feuillet 1.Then, in a first manufacturing step shown schematically in Figure 2, the sheet 1 is lowered through a not shown training corridor, which progressively folds the ears 5 along their fold line 6 with parts in a helix from the training corridor. The latter further causes the folding of the side portions 3. At the exit of the corridor, the folded sheet 1 is placed in a bucket 12 by a punch 13. During the entire descent phase, the sheet 1 is also heated. The heat makes it possible to obtain a definitive folding of the plastic material of the sheet 1, by modifying its memory, to form a shell 15 illustrated in FIG. 3 in the cup 12. The bottom 14 of this cup is movable by a piston system and is fixed so as to form a bucket 12 of depth equal to the width of the flaps 3 of the sheet 1.
La seconde étape, illustrée en figure 4, correspond au remplissage de la coquille 15 par une substance alimentaire 11 , du fromage par exemple. Cette substance ne remplit pas toute la hauteur de Ia coquille.The second step, illustrated in FIG. 4, corresponds to the filling of the shell 15 with a food substance 11, cheese, for example. This substance does not fill the whole height of the shell.
La troisième étape consiste en la pose d'un couvercle 16 plastique de surface correspondant à celle de la zone centrale 2 du feuillet 1 , qui forme la base de la coquille 15.The third step consists in laying a cover 16 of plastic surface corresponding to that of the central zone 2 of the sheet 1, which forms the base of the shell 15.
Dans une quatrième étape illustrée en figure 6, le fond 14 du godet 12 est remonté de sorte que la partie 17 des quatre parois latérales 3 de la coquille située au-dessus du couvercle 16 dépasse de la surface supérieure du godet 12. On effectue alors le pliage de deux de ces parties 17 placées sur des côtés opposés, qui forme des rabats 17, à l'aide de deux étaux 18 de chaque côté et d'une contre pièce 19 placée sur le couvercle 16 afin de ne pas écraser le contenu 11 de l'emballage en fabrication. Durant cette étape, les quatre angles des rabats 17 sont plies, chauffés et pressés afin de rester en place par ce collage à chaud.In a fourth step illustrated in FIG. 6, the bottom 14 of the bucket 12 is raised so that the part 17 of the four lateral walls 3 of the shell situated above the cover 16 protrudes from the upper surface of the bucket 12. the folding of two of these parts 17 placed on opposite sides, which forms flaps 17, with two clamps 18 on each side and a counter piece 19 placed on the lid 16 so as not to crush the contents 11 of the packaging in manufacture. During this step, the four corners of the flaps 17 are folded, heated and pressed in order to remain in place by this hot gluing.
La figure 7 illustre une cinquième étape par laquelle un rabatteur à chaud 21 va rabattre les deux dernières surfaces latérales opposées 17 en les pressant contre une contre-pièce 20 disposée sur le couvercle 16. A la fin de cette étape, les quatre rabats 17 des quatre côtés latéraux 3 sont plies par-dessus le couvercle 16. Cette étape peut être répétée une seconde fois pour s'assurer de son succès et éviter qu'un ou plusieurs rabats ne se déplient.FIG. 7 illustrates a fifth step by which a hot beater 21 will fold down the last two opposite lateral surfaces 17 by pressing them against a counterpart 20 disposed on the lid 16. At the end of this step, the four flaps 17 of the four lateral sides 3 are folded over the cover 16. This step can be repeated a second times to ensure success and prevent one or more flaps from unfolding.
La figure 8 illustre une dernière étape par laquelle une presse à chaud 22 vient presser toute la surface supérieure de l'emballage pour assurer le soudage de toute la surface des rabats 17 sur le couvercle 16 et garantir l'étanchéité de l'emballage. Durant cette étape, le fond 14 du godet 12 est redescendu de sorte que l'emballage est entièrement enfoncé dans le godet 12 afin que la presse 22 reste retenue par la surface latérale supérieure du godet 12 et ne puisse y pénétrer que de quelques millimètres, évitant l'écrasement de l'emballage. Seule la languette 10 de la pointe triangulaire d'un des rabats 17 n'est pas collée sur le couvercle 16 car elle ne comprend pas d'enduit thermosoudable sur sa surface. Elle peut ainsi être facilement manuellement saisie et sert de languette d'ouverture de l'emballage.Figure 8 illustrates a last step by which a hot press 22 squeezes the entire upper surface of the package to weld the entire surface of the flaps 17 on the cover 16 and ensure the tightness of the package. During this step, the bottom 14 of the bucket 12 is lowered so that the package is fully depressed in the bucket 12 so that the press 22 remains retained by the upper lateral surface of the bucket 12 and can penetrate only a few millimeters, avoiding the crushing of the packaging. Only the tongue 10 of the triangular tip of one of the flaps 17 is not glued to the cover 16 because it does not include a heat-sealable coating on its surface. It can thus be easily manually grasped and serves as the opening tab of the package.
Enfin, comme représenté en figure 9, l'emballage terminé 24, représenté en figure 10, est sorti du godet 12 par le piston 14 du fond du godet qui le remonte entièrement hors du godet, afin qu'il soit guidé par un moyen de transport 23 et stocké avec les autres produits finis. Finally, as shown in FIG. 9, the completed package 24, shown in FIG. 10, is taken out of the bucket 12 by the piston 14 of the bottom of the bucket which raises it completely out of the bucket, so that it is guided by means of transport 23 and stored with the other finished products.

Claims

Revendications : Claims:
1. Procédé de fabrication d'un emballage, caractérisé en ce qu'il comprend les étapes suivantes :A method of manufacturing a package, characterized in that it comprises the following steps:
a) -découpage de feuillets (1 ) comprenant une bande latérale (3) prolongée par une pointe sensiblement triangulaire en sailliea) -cutting leaflets (1) comprising a lateral strip (3) extended by a substantially triangular projecting point
(4) dans un film (8) sur lequel les feuillets (1) sont disposés en quinconce de sorte que ce découpage génère peu ou pas de chute ;(4) in a film (8) on which the leaflets (1) are staggered so that this cutting generates little or no drop;
b) pliage d'un feuillet (1 ) pour former une coquille (15) ;b) folding a sheet (1) to form a shell (15);
c) ajout d'un couvercle (16) ;c) adding a lid (16);
d) pliage de rabats (17) sur le couvercle (16), le rabat (17) comportant la partie sensiblement triangulaire en saillie (4) formant une languette d'ouverture (10).d) folding flaps (17) on the cover (16), the flap (17) having the substantially triangular projecting portion (4) forming an opening tab (10).
2. Procédé de fabrication d'un emballage selon la revendication 1 , caractérisé en ce que le film (8) est un film plastique dont une face est enduite d'un matériau thermosoudable.2. A method of manufacturing a package according to claim 1, characterized in that the film (8) is a plastic film, one side is coated with a heat-sealable material.
3. Procédé de fabrication d'un emballage selon la revendication 2, caractérisé en ce que l'étape a) comprend en outre une étape de transport, retournement et soudure d'une chute triangulaire (9) du film (8) sur la partie triangulaire en saillie (4) de taille correspondante, en mettant en contact les deux faces enduites de matériau thermosoudable des deux parties (4, 9), pour former la languette d'ouverture (10). 3. A method of manufacturing a package according to claim 2, characterized in that step a) further comprises a step of transporting, reversing and welding a triangular fall (9) of the film (8) on the part triangular projection (4) of corresponding size, bringing into contact the two heat-sealable coated surfaces of the two parts (4, 9), to form the opening tongue (10).
4. Procédé de fabrication d'un emballage selon la revendication 2 ou 3, caractérisé en ce que les étapes b) et d) comprennent des pliages à chaud.4. A method of manufacturing a package according to claim 2 or 3, characterized in that steps b) and d) comprise hot bending.
5. Procédé de fabrication d'un emballage selon l'une des revendications précédentes, caractérisé en ce qu'il comprend une étape de découpage d'une fine bande de déchirement (7) et une étape de collage de cette bande de déchirement sur le feuillet (1 ), de sorte qu'elle s'étende depuis l'extrémité de la languette d'ouverture (10) sur une longueur importante du feuillet (1 ), et/ou une étape consistant à réaliser des prédécoupes (11 ) sur la languette d'ouverture (10).5. A method of manufacturing a package according to one of the preceding claims, characterized in that it comprises a step of cutting a thin tear strip (7) and a step of bonding the tear strip on the sheet (1), so that it extends from the end of the opening tab (10) over a long length of the sheet (1), and / or a step of making pre-cuts (11) on the opening tongue (10).
6. Emballage comprenant un feuillet (1 ) plastique principal occupant sa plus grande surface, comprenant un couvercle (16), des rabats (17) du feuillet (1 ) rabattus sur le couvercle (16), caractérisé en ce que un des rabats (17) comprend une partie (10) sensiblement triangulaire en saillie, dont le bord oblique (4a) délimitant la partie triangulaire est symétrique autour de son centre (O) de sorte de pouvoir placer plusieurs feuillets (1 ) de même forme en quinconce sur un même film (8).6. Packaging comprising a main plastic sheet (1) occupying its largest area, comprising a lid (16), flaps (17) of the sheet (1) folded on the lid (16), characterized in that one of the flaps ( 17) comprises a substantially projecting triangular portion (10) whose oblique edge (4a) delimiting the triangular portion is symmetrical about its center (O) so that several sheets (1) of the same staggered form can be placed on a same film (8).
7. Emballage selon la revendication 6, caractérisé en ce que les parties angulaires (5) du feuillet (1 ) opposées à la partie triangulaire en saillie (4) présentent une forme rectangulaire dont un angle est tronqué, définissant un triangle de dimension environ égale à la moitié de la languette d'ouverture (10).Pack according to claim 6, characterized in that the angular portions (5) of the sheet (1) opposite the projecting triangular part (4) have a rectangular shape whose angle is truncated, defining a triangle of approximately equal size. at half of the opening tongue (10).
8. Emballage selon l'une des revendications 6 ou 7, caractérisé en ce que le feuillet (1 ) présente une partie centrale (2) rectangulaire, quatre parties latérales (3) dont une est prolongée par la partie sensiblement triangulaire en saillie (4), quatre parties d'angle (5) rectangulaires tronquées, le feuillet (1 ) étant plié pour former un emballage parallélépipédique rectangle.8. Packaging according to one of claims 6 or 7, characterized in that the sheet (1) has a central portion (2) rectangular, four side portions (3), one of which is extended by the part substantially triangular projection (4), four corner portions (5) truncated rectangular, the sheet (1) being folded to form a rectangular parallelepiped packaging.
9. Emballage selon l'une des revendications 6 à 8, caractérisé en ce que le feuillet (1 ) est en matériau plastique. 9. Packaging according to one of claims 6 to 8, characterized in that the sheet (1) is plastic material.
EP06701142.9A 2005-01-14 2006-01-12 Plastic packaging and production and packaging method Active EP1836110B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0500383A FR2880836B1 (en) 2005-01-14 2005-01-14 PLASTIC PACKAGING AND METHOD FOR MANUFACTURING AND PACKAGING
PCT/IB2006/000043 WO2006075234A1 (en) 2005-01-14 2006-01-12 Plastic packaging and production and packaging method

Publications (2)

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EP1836110A1 true EP1836110A1 (en) 2007-09-26
EP1836110B1 EP1836110B1 (en) 2015-09-30

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EP06701142.9A Active EP1836110B1 (en) 2005-01-14 2006-01-12 Plastic packaging and production and packaging method

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EP (1) EP1836110B1 (en)
FR (1) FR2880836B1 (en)
WO (1) WO2006075234A1 (en)

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WO2016166249A1 (en) * 2015-04-17 2016-10-20 Fromageries Bel Method for producing a packaged portion of a food product and portion produced by said method
EP3594136A1 (en) 2018-07-13 2020-01-15 Gruppo Smaic Macchinari Industriali S.r.l. A process for manufacturing a packaging for soft cheese, a device for carrying out the process and packages obtained

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FR2926792B1 (en) * 2008-01-25 2010-04-02 Bel Fromageries PROCESS FOR PACKAGING A PASTE PRODUCT IN A PLASTICALLY OPEN PACKAGING OPEN PACKAGING

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FR2499025A1 (en) * 1981-02-03 1982-08-06 Fermiers Reunis PACKAGING OF EASY-OPENING PACKAGING, IN PARTICULAR FOR PASTA FOOD PRODUCTS
DE3233670C2 (en) * 1982-09-10 1986-06-26 Maizena Gmbh, 2000 Hamburg Method of making a container
IT1298397B1 (en) * 1997-12-31 2000-01-05 Corazza Natalino Spa HERMETIC PACKAGING FOR PRODUCTS WITH A PASTY CONSISTENCY IN PARTICULAR PRODUCTS DERIVED FROM MILK, SUCH AS PORTIONS OF PROCESSED CHEESE AND METHOD
CH696167A5 (en) * 2002-12-04 2007-01-31 Fromageries Bel S A tight packaging container for pasty product.

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016166249A1 (en) * 2015-04-17 2016-10-20 Fromageries Bel Method for producing a packaged portion of a food product and portion produced by said method
FR3035077A1 (en) * 2015-04-17 2016-10-21 Bel Fromageries PROCESS FOR PRODUCING A PACKED PORTION OF FOOD PRODUCT, AND PORTION OBTAINED THEREBY
AU2016249859B2 (en) * 2015-04-17 2020-07-30 Bel Method for producing a packaged portion of a food product and portion produced by said method
US11097859B2 (en) 2015-04-17 2021-08-24 Bel Method for producing a packaged portion of a food product and portion produced by said method
EP3594136A1 (en) 2018-07-13 2020-01-15 Gruppo Smaic Macchinari Industriali S.r.l. A process for manufacturing a packaging for soft cheese, a device for carrying out the process and packages obtained

Also Published As

Publication number Publication date
FR2880836A1 (en) 2006-07-21
EP1836110B1 (en) 2015-09-30
WO2006075234A1 (en) 2006-07-20
FR2880836B1 (en) 2008-07-18

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