EP0870695A1 - Polyolefin film for making a package by folding - Google Patents

Polyolefin film for making a package by folding Download PDF

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Publication number
EP0870695A1
EP0870695A1 EP98420058A EP98420058A EP0870695A1 EP 0870695 A1 EP0870695 A1 EP 0870695A1 EP 98420058 A EP98420058 A EP 98420058A EP 98420058 A EP98420058 A EP 98420058A EP 0870695 A1 EP0870695 A1 EP 0870695A1
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EP
European Patent Office
Prior art keywords
film
layer
marked
folding
sealing
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Granted
Application number
EP98420058A
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German (de)
French (fr)
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EP0870695B1 (en
Inventor
Michel Philippe
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Alcan Packaging Flexible France SAS
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Pechiney Emballage Flexible Europe SAS
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/02Wrappers or flexible covers
    • B65D65/14Wrappers or flexible covers with areas coated with adhesive
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D75/00Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/04Articles or materials wholly enclosed in single sheets or wrapper blanks
    • B65D75/14Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks folded-up around all sides of the contents from a portion on which the contents are placed
    • B65D75/18Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks folded-up around all sides of the contents from a portion on which the contents are placed the upstanding portion of the wrapper being closed by regular or irregular folds or pleats, e.g. bunch-wrapped packages

Definitions

  • the invention relates to flexible films used in the packaging of solid portions or semi-solid by folding.
  • packaged solid or semi-solid portions in flexible films mention may be made of food products such as broths KUB ®.
  • the film according to the invention has a much better resistance to the risk of punctures than the traditional film based on thin aluminum foil, and this both by the better mechanical resistance to punctures by the better resistance to corrosion.
  • the invention which has succeeded in combating the memory effect of the thermoplastic films during the folding phase, uses this same memory effect to facilitate the unfolding of said block by the end consumer.
  • the film according to the invention is significantly more economical than the films according to the prior art.
  • Figure 1 is a top view of the outer face of the film or portion of film (1) intended to form a package of a rigid or semi-rigid parallelepipedal block having a rectangular base of 32mm x 23mm, and 10 mm height.
  • the four marked areas (20) of cold sealing layer, hatched vertically, correspond to the formation, by folding, of the four side walls of the package to be formed.
  • Each of the four areas (20) comprises two parts (201, 202) which, after folding along the lines (203), are opposite and adhere to each other, thus fixing the side walls of the package to be formed .
  • the four marked areas (21) of cold sealing layer, hatched horizontally, correspond to the formation, by folding, of the upper wall of the package to be formed.
  • Each of the four areas (21) comprises two parts (211, 212) which after folding along the lines (213), are opposite and adhere to each other, thereby fixing the upper wall of the package to be formed.
  • On the film (1) is carried an arrow (6) indicating the direction of unwinding of the film on reel.
  • FIG. 2 is a bottom view of the interior face of the film or portion of film (1), having the same lateral positioning as in FIG. 1.
  • This inner face includes two lateral strips (3) non-stick, so that the marked areas (20,21) of the outer face do not adhere to the inner face and thus allow the unwinding of the film reel.
  • a marked area (4) of heat-applied varnish Between these two strips, and at one end of the portion (1) of film, is a marked area (4) of heat-applied varnish.
  • This area (4) is located a distance of 10 mm from the edge, so as to leave an opening zone (6) constituting for the consumer an easy grip of the film for the opening of the packaging formed.
  • the location of said cold sealing layer is chosen as a function of said folding, so that, during said folding, any identified area or portion of identified area is brought into contact, respectively, or from another marked area, or from another part of the same identified area, so that, after folding of said block, no free cold sealing layer remains.
  • cold sealing layer is meant a generic family of adhesive products, often known in themselves as “coldseals”, and which have the particularity of adhering cold to themselves.
  • cold active adhesives can be used which can adhere to said polyolefin-based film, but which do not adhere to this same film made non-stick.
  • said marked areas of cold sealing (20,21) are of half the surface area and are limited to one half (201, 211) of area (20,21).
  • said polyolefin-based film is preferably chosen from PP, OPP, metallized OPP, expanded PP with pearlescent appearance.
  • the inner face of said film must include a non-stick layer, possibly marked with respect to said marked areas.
  • a non-stick layer possibly marked with respect to said marked areas.
  • either the inner face of said PP-based film is made non-stick, or the inner face of said PP-based film is coated with a layer of non-stick varnish.
  • this layer of varnish (3) can be identified, as illustrated in FIG. 2.
  • said interior face can comprise said non-stick varnish in a marked layer, and a heat-sealing varnish in another layer marked, and offset with respect to said cold sealing layer, so that, in said film on reel, a layer of cold sealing of the external face of a turn, is not facing said layer of heat-sealing varnish from another turn.
  • This modality is intended to increase, when it is made necessary in particular by local climatic conditions, the tightness of the packaging formed, the sealing of beaches (20,21) only ensuring that the packaging formed is not likely to unfold.
  • Another object of the invention consists of the use of a film according to the invention for packaging food products in the form of rigid blocks or semi-rigid.
  • a film was made as shown in Figures 1 and 2.
  • a 32 ⁇ m thick OPP film was used with one side made non-stick.
  • a thickness of 4 ⁇ m of a commercial cold-sealing varnish (varnish based on acrylate) has been deposited, marked and along the ranges (20, 21) of FIG. 1 alkyl and natural latex).
  • a layer (4) of commercial fusible varnish (varnish based on alkyl acrylate) 4 ⁇ m thick was deposited.

Abstract

The polyolefin-based film has an outer face with a cold sealing layer and an inner face with an anti-adhesion surface. The cold-sealing material is applied to the outer surface in set areas (20) which are sealed on contact as the material is folded. The polyolefin-based material for the film is selected from polypropylene (PP), from OPP, metallised OPP or expanded PP with a mother-of-pearl finish. The anti-adhesion surface is produced by a coating of varnish made from, e.g. alkyl acrylate and natural latex. Other materials which can be used for the film are, for example, PVDC or EVOH.

Description

DOMAINE DE L'INVENTIONFIELD OF THE INVENTION

L'invention concerne les films flexibles utilisés dans l'emballage de portions solides ou semi-solides par pliage. A titre d'exemple de portions solides ou semi-solides emballées dans des films flexibles, on peut citer des produits alimentaires tels que les bouillons KUB ®.The invention relates to flexible films used in the packaging of solid portions or semi-solid by folding. As an example of packaged solid or semi-solid portions in flexible films, mention may be made of food products such as broths KUB ®.

ETAT DE LA TECHNIQUESTATE OF THE ART

Pour l'emballage typique de produits alimentaires tels que les bouillons KUB ®, on utilise généralement un film complexe successivement constitué d'une feuille mince d'aluminium laqué doré à l'extérieur, d'une couche de cire au centre, et d'une couche de papier mousseline à l'intérieur, ou en désignation condensée : Al/cire/papier. Le conditionnement de blocs de bouillon KUB ® s'effectue de la manière suivante, sur machine automatique :

  • 1) à partir d'une bobine de film, est découpée une portion de film sur lequel est placé ledit bloc,
  • 2) l'ensemble est placé dans une boíte de pliage qui permet de réaliser la succession des plis nécessaires à l'emballage dudit bloc par ladite portion de film, de manière à obtenir un bloc emballé plié,
  • 3) ledit bloc emballé plié circule entre des rails chauffants qui fondent la cire. Celle-ci diffuse dans le papier mousseline et assure ainsi le collage des différents plis formés en 2). On obtient ainsi un bloc emballé collé. Les blocs emballés collés sont ensuite regroupés dans un suremballage, typiquement une cartonnette.
  • For the typical packaging of food products such as KUB ® broths, a complex film is generally used successively consisting of a thin sheet of aluminum lacquered golden on the outside, a layer of wax in the center, and a layer of tissue paper inside, or in condensed designation: Al / wax / paper. KUB ® broth blocks are packaged as follows, on an automatic machine:
  • 1) from a film reel, a portion of film is cut on which said block is placed,
  • 2) the assembly is placed in a folding box which makes it possible to carry out the succession of folds necessary for packaging said block by said portion of film, so as to obtain a folded packaged block,
  • 3) said folded packaged block circulates between heating rails which melt the wax. This diffuses into the tissue paper and thus ensures the bonding of the different folds formed in 2). This produces a packaged, glued block. The glued packaged blocks are then grouped in an overwrap, typically a cardboard box.
  • PROBLEMES POSESPROBLEMS POSED

    Les problèmes posés par le film d'emballage traditionnel sont de trois ordres :

    • d'une part, il a été observé que les films traditionnels conduisaient à des perces, en particulier aux coins desdits blocs, peut-être à la fois par l'action mécanique des coins desdits blocs sur ledit film, et éventuellement par l'action corrosive de grains de sel dudit bloc dans le cas de bouillons KUB ®.
    • d'autre part, le bloc emballé collé est relativement difficile à ouvrir.
    • enfin, le film traditionnel est d'un coût relativement élevé.
    The problems posed by traditional packaging film are of three types:
    • on the one hand, it has been observed that traditional films lead to drilling, in particular at the corners of said blocks, perhaps both by the mechanical action of the corners of said blocks on said film, and possibly by the action corrosive to grains of salt from said block in the case of KUB ® broths.
    • on the other hand, the glued pack is relatively difficult to open.
    • finally, traditional film is relatively expensive.

    DESCRIPTION DE L'INVENTIONDESCRIPTION OF THE INVENTION

    Selon l'invention, le film pour emballages de blocs rigides ou semi-rigides constitués de parois formées par pliage et scellage dudit film est caractérisé en ce que,

  • a) il comprend un film à base de polyoléfine,
  • b) la face extérieure dudit film comprend une couche de scellage à froid formant des plages repérées,
  • c) la face intérieure dudit film comprend une couche anti-adhérente, éventuellement repérée par rapport auxdites plages repérées.
  • According to the invention, the film for packaging rigid or semi-rigid blocks consisting of walls formed by folding and sealing said film is characterized in that,
  • a) it comprises a film based on polyolefin,
  • b) the outer face of said film comprises a cold sealing layer forming marked areas,
  • c) the inner face of said film comprises a non-stick layer, possibly marked with respect to said marked areas.
  • L'invention nécessite la combinaison des moyens décrits précédemment :

    • un film à base de polyoléfine peut être choisi parce que, d'une part il possédera les caractéristiques mécaniques suffisantes et il constituera le plus souvent une barrière suffisante à l'humidité pour le produit à conditionner, et d'autre part son coût est relativement bas.
      S'il était exigé du film selon l'invention une faible perméabilité à l'oxygène, ledit film à base de polyoléfine pourrait, de manière connue, soit être métallisé, soit être remplacé par un film multicouche comprenant une couche de matériau à propriétés barrières, tel que les copolymères de chlorure de vinylidène (PVDC) ou les EVOH.
    • une couche de scellage à froid est nécessaire pour que, lors de l'emballage dudit bloc dans une portion découpée dudit film en utilisant généralement une boíte de pliage, le scellage desdites plages repérées s'effectue immédiatement par simple contact des parties mises en regard lors dudit pliage, au moins une des parties mise en regard lors dudit pliage étant recouverte d'une couche de scellage à froid. Ainsi, en sortie de boíte de pliage, ladite portion de film, une fois pliée, n'aura plus la possibilité de se déplier, compte tenu de l'effet mémoire des films de polyoléfine.
    • ledit film à base de polyoléfine doit comprendre une couche anti-adhérente, éventuellement repérée par rapport auxdites plages repérées, parce que, sans cela, on observerait un collage en bobine : la couche de scellage, déposée sur la face extérieure dudit film, collerait ou risquerait de coller à la face intérieure de la spire adjacente. Les traitements d'anti-adhérence, destinés notamment à éviter le collage entre les spires d'une bobine de film, sont bien connus en eux-mêmes.
    The invention requires the combination of the means described above:
    • a polyolefin-based film can be chosen because, on the one hand it will have sufficient mechanical characteristics and it will most often constitute a sufficient barrier to humidity for the product to be packaged, and on the other hand its cost is relatively low.
      If the film according to the invention were required to have a low oxygen permeability, said polyolefin-based film could, in known manner, either be metallized or be replaced by a multilayer film comprising a layer of material with barrier properties , such as vinylidene chloride copolymers (PVDC) or EVOH.
    • a cold sealing layer is necessary so that, during the packaging of said block in a cut portion of said film, generally using a folding box, the sealing of said identified areas is carried out immediately by simple contact of the facing parts during of said folding, at least one of the parts facing each other during said folding being covered with a cold sealing layer. Thus, at the outlet of the folding box, said portion of film, once folded, will no longer have the possibility of unfolding, taking into account the memory effect of polyolefin films.
    • said polyolefin-based film must include a non-stick layer, possibly marked with respect to said marked areas, because without this, a bonding on a reel would be observed: the sealing layer, deposited on the outside of said film, would bond or may stick to the inside of the adjacent coil. Anti-adhesion treatments, intended in particular to avoid sticking between the turns of a film reel, are well known in themselves.

    Grâce à cette combinaison de moyens, il a été possible de résoudre le problème posé. En effet, le film selon l'invention présente une bien meilleure tenue aux risques de perces que le film traditionnel à base de feuille mince d'aluminium, et cela tant par la meilleure résistance mécanique aux perces que par la meilleure tenue à la corrosion. En outre, l'invention, qui a réussi à combattre l'effet mémoire des films thermoplastiques durant la phase de pliage, utilise ce même effet mémoire pour faciliter le dépliage dudit bloc par le consommateur final.
    Enfin, compte tenu du coût relativement faible des films de polyoléfines comparé au coût des feuilles minces d'aluminium, le film selon l'invention est nettement plus économique que les films selon l'état de la technique.
    Thanks to this combination of means, it was possible to solve the problem posed. Indeed, the film according to the invention has a much better resistance to the risk of punctures than the traditional film based on thin aluminum foil, and this both by the better mechanical resistance to punctures by the better resistance to corrosion. In addition, the invention, which has succeeded in combating the memory effect of the thermoplastic films during the folding phase, uses this same memory effect to facilitate the unfolding of said block by the end consumer.
    Finally, given the relatively low cost of polyolefin films compared to the cost of thin aluminum sheets, the film according to the invention is significantly more economical than the films according to the prior art.

    DESCRIPTION DES FIGURESDESCRIPTION OF THE FIGURES

    La figure 1 est une vue de dessus de la face extérieure du film ou portion de film (1) destiné à former un emballage d'un bloc rigide ou semi-rigide parallélépipédique ayant une base rectangulaire de 32mm x 23mm, et de 10 mm de hauteur.
    Les quatre plages repérées (20) de couche de scellage à froid, hachurées verticalement, correspondent à la formation, par pliage, des quatre parois latérales de l'emballage à former.
    Chacune des quatre plages (20) comprend deux parties (201, 202) qui, après pliage selon les lignes (203), sont en regard et adhèrent l'une à l'autre, fixant ainsi les parois latérales de l'emballage à former.
    Figure 1 is a top view of the outer face of the film or portion of film (1) intended to form a package of a rigid or semi-rigid parallelepipedal block having a rectangular base of 32mm x 23mm, and 10 mm height.
    The four marked areas (20) of cold sealing layer, hatched vertically, correspond to the formation, by folding, of the four side walls of the package to be formed.
    Each of the four areas (20) comprises two parts (201, 202) which, after folding along the lines (203), are opposite and adhere to each other, thus fixing the side walls of the package to be formed .

    Les quatre plages repérées (21) de couche de scellage à froid, hachurées horizontalement, correspondent à la formation, par pliage, de la paroi supérieure de l'emballage à former.
    Chacune des quatre plages (21) comprend deux parties (211, 212) qui après pliage selon les lignes (213), sont en regard et adhèrent l'une à l'autre, fixant ainsi la paroi supérieure de l'emballage à former.
    Sur le film (1) est porté une flèche (6) indiquant le sens de déroulement du film en bobine.
    The four marked areas (21) of cold sealing layer, hatched horizontally, correspond to the formation, by folding, of the upper wall of the package to be formed.
    Each of the four areas (21) comprises two parts (211, 212) which after folding along the lines (213), are opposite and adhere to each other, thereby fixing the upper wall of the package to be formed.
    On the film (1) is carried an arrow (6) indicating the direction of unwinding of the film on reel.

    La figure 2 est une vue de dessous de la face intérieure du film ou portion de film (1), ayant le même positionnement latéral que la figure 1.
    Cette face intérieure comprend deux bandes latérales (3) anti-adhérentes, de manière à ce que les plages repérées (20,21) de la face extérieure n'adhérent pas à la face intérieure et ainsi permettent le dévidage de la bobine de film.
    Entre ces deux bandes, et à une extrémité de la portion (1) de film, se trouve une plage repérée (4) de vernis thermocollant.
    Cette plage (4) est située une distance de 10 mm du bord, de manière laisser une zone d'ouverture (6) constituant pour le consommateur une prise aisée du film en vue de l'ouverture de l'emballage formé.
    FIG. 2 is a bottom view of the interior face of the film or portion of film (1), having the same lateral positioning as in FIG. 1.
    This inner face includes two lateral strips (3) non-stick, so that the marked areas (20,21) of the outer face do not adhere to the inner face and thus allow the unwinding of the film reel.
    Between these two strips, and at one end of the portion (1) of film, is a marked area (4) of heat-applied varnish.
    This area (4) is located a distance of 10 mm from the edge, so as to leave an opening zone (6) constituting for the consumer an easy grip of the film for the opening of the packaging formed.

    DESCRIPTION DETAILLEE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

    Selon une modalité de l'invention, le repérage de ladite couche de scellage à froid est choisi en fonction dudit pliage, de manière à ce que, lors dudit pliage, toute plage repérée ou partie de plage repérée soit mise au contact, respectivement, soit d'une autre plage repérée, soit d'une autre partie de la même plage repérée, afin que, après pliage dudit bloc, ne subsiste pas de couche de scellage à froid qui soit libre.
    Par couche de scellage à froid, on entend une famille générique de produits adhésifs, connus en eux-mêmes souvent sous le nom de « coldseals », et qui ont la particularité d'adhérer à froid sur eux-mêmes.
    According to one embodiment of the invention, the location of said cold sealing layer is chosen as a function of said folding, so that, during said folding, any identified area or portion of identified area is brought into contact, respectively, or from another marked area, or from another part of the same identified area, so that, after folding of said block, no free cold sealing layer remains.
    By cold sealing layer is meant a generic family of adhesive products, often known in themselves as "coldseals", and which have the particularity of adhering cold to themselves.

    Selon une autre modalité, non représentée sur les figures, on peut utiliser des adhésifs actifs à froid qui peuvent adhérer audit film à base de polyoléfine, mais qui n'adhèrent pas à ce même film rendu anti-adhérent.
    Dans ce cas, lesdites plages repérées de scellage à froid (20,21) sont de superficie moitié moindre et se limitent à une moitié (201, 211) de plage (20,21).
    According to another method, not shown in the figures, cold active adhesives can be used which can adhere to said polyolefin-based film, but which do not adhere to this same film made non-stick.
    In this case, said marked areas of cold sealing (20,21) are of half the surface area and are limited to one half (201, 211) of area (20,21).

    Selon l'invention, ledit film à base de polyoléfine est choisi, de préférence, parmi le PP, l'OPP, l'OPP métallisé, le PP expansé à aspect nacré.According to the invention, said polyolefin-based film is preferably chosen from PP, OPP, metallized OPP, expanded PP with pearlescent appearance.

    Selon l'invention, la face intérieure dudit film doit comprendre une couche anti-adhérente, éventuellement repérée par rapport auxdites plages repérées.
    Pour cela, soit la face intérieure dudit film à base de PP est rendue anti-adhérente, soit la face intérieure dudit film à base de PP est revêtue d'une couche de vernis anti-adhérent. Dans le second cas, cette couche de vernis (3) peut être repérée, comme illustré à la figure 2.
    According to the invention, the inner face of said film must include a non-stick layer, possibly marked with respect to said marked areas.
    For this, either the inner face of said PP-based film is made non-stick, or the inner face of said PP-based film is coated with a layer of non-stick varnish. In the second case, this layer of varnish (3) can be identified, as illustrated in FIG. 2.

    Selon une autre modalité de l'invention, ladite face intérieure peut comprendre ledit vernis anti-adhérent en couche repérée, et un vernis thermoscellant en une autre couche repérée, et décalée par rapport à ladite couche de scellage à froid, de manière à ce que, dans ledit film en bobine, une couche de scellage à froid de la face extérieure d'une spire, ne soit pas en regard avec ladite couche de vernis thermoscellant d'une autre spire. Cette modalité est destinée à augmenter, quand cela est rendu nécessaire notamment par les conditions climatiques locales, l'étanchéité de l'emballage formé, le scellage de plages (20,21) assurant seulement que l'emballage formé ne risque pas de se déplier.According to another embodiment of the invention, said interior face can comprise said non-stick varnish in a marked layer, and a heat-sealing varnish in another layer marked, and offset with respect to said cold sealing layer, so that, in said film on reel, a layer of cold sealing of the external face of a turn, is not facing said layer of heat-sealing varnish from another turn. This modality is intended to increase, when it is made necessary in particular by local climatic conditions, the tightness of the packaging formed, the sealing of beaches (20,21) only ensuring that the packaging formed is not likely to unfold.

    Un autre objet de l'invention est constitué par l'utilisation d'un film selon l'invention pour l'emballage de produits alimentaires se présentant sous forme de blocs rigides ou semi-rigides.Another object of the invention consists of the use of a film according to the invention for packaging food products in the form of rigid blocks or semi-rigid.

    EXEMPLE DE REALISATIONEXAMPLE OF IMPLEMENTATION

    On a fabriqué un film tel que représenté sur les figures 1 et 2. A film was made as shown in Figures 1 and 2.

    On a utilisé un film OPP de 32 µm d'épaisseur avec une face rendue anti-adhérente. Sur sa face extérieure, on a déposé, de manière repérée et selon les plages (20,21) de la figure 1, une épaisseur de 4 µm d'un vernis de scellage à froid du commerce (vernis à base d'acrylate d'alkyle et de latex naturel).
    Sur sa face intérieure, on a déposé une couche repérée (4) de vernis thermocollant du commerce (vernis à base d'acrylate d'alkyle) d'épaisseur 4 µm.
    A 32 µm thick OPP film was used with one side made non-stick. On its outer face, a thickness of 4 μm of a commercial cold-sealing varnish (varnish based on acrylate) has been deposited, marked and along the ranges (20, 21) of FIG. 1 alkyl and natural latex).
    On its inner face, a layer (4) of commercial fusible varnish (varnish based on alkyl acrylate) 4 μm thick was deposited.

    On a utilisé ce film pour emballer des blocs de bouillon KUB ® sur une machine standard munie de boítes de pliage.
    On n'a pas observé de problèmes particuliers lors de l'emballage de ces blocs, qui ont été ensuite mis sous cartonnette .
    Durant le transport et le stockage, il n'a pas été observé de perce dudit film.
    L'ouverture finale, par le consommateur, s'est avérée plus aisée que celle des emballages selon l'état de la technique, le film à base de polyoléfine ayant tendance, une fois rompus les liens entre les faces scellées, à reprendre sa forme plane initiale.
    We used this film to wrap KUB ® broth blocks on a standard machine with folding boxes.
    No particular problems were observed during the packaging of these blocks, which were then placed in cardboard.
    During transport and storage, no perforation of the said film was observed.
    The final opening by the consumer has proved easier than that of the packaging according to the prior art, the polyolefin-based film having a tendency, once the links between the sealed sides have broken, to return to its shape initial plane.

    Claims (7)

    Film pour emballages de blocs rigides ou semi-rigides constitués de parois formées par pliage et scellage dudit film, caractérisé en ce que, a) il comprend un film à base de polyoléfine, b) la face extérieure dudit film comprend une couche de scellage à froid formant des plages repérées, c) la face intérieure dudit film comprend une couche anti-adhérente, éventuellement repérée par rapport auxdites plages repérés. Film for packaging rigid or semi-rigid blocks consisting of walls formed by folding and sealing said film, characterized in that, a) it comprises a film based on polyolefin, b) the outer face of said film comprises a cold sealing layer forming marked areas, c) the inner face of said film comprises a non-stick layer, possibly marked with respect to said marked areas. Film selon la revendication 1 dans lequel le repérage de ladite couche de scellage à froid est choisi en fonction dudit pliage, de manière à ce que, lors dudit pliage, toute plage repérée ou partie de plage repérée soit mise au contact, respectivement, soit d'une autre plage repérée, soit d'une autre partie de la même plage repérée, afin que, après pliage dudit bloc, ne subsiste pas de couche de scellage à froid qui soit libre.The film of claim 1 wherein the marking of said sealing layer at cold is chosen according to said folding, so that, during said folding, all track marked or part of track marked either brought into contact, respectively, or of a other marked range, or from another part of the same marked range, so that, after folding of said block, no free cold sealing layer remains. Film selon une quelconque des revendications 1 à 2 dans lequel ledit film à base de polyoléfine est choisi parmi le PP, l'OPP, l'OPP métallisé, le PP expansé à aspect nacré.A film according to any of claims 1 to 2 wherein said film based polyolefin is chosen from PP, OPP, metallized OPP, expanded PP with pearlescent appearance. Film selon la revendication 3 dans lequel la face intérieure dudit film à base de PP est rendue anti-adhérente.The film of claim 3 wherein the interior face of said PP-based film is made non-stick. Film selon la revendication 3 dans lequel la face intérieure dudit film à base de PP est revêtue d'une couche de vernis anti-adhérent.The film of claim 3 wherein the interior face of said PP-based film is coated with a layer of non-stick varnish. Film selon la revendication 5 dans lequel ladite face intérieure comprend ledit vernis anti-adhérent en couche repérée, et un vernis thermoscellant en une autre couche repérée, et décalée par rapport à ladite couche de scellage à froid, de manière à ce que, dans ledit film en bobine, une couche de scellage à froid de la face extérieure d'une spire. ne soit pas en regard avec ladite couche de vernis thermoscellant d'une autre spire. The film of claim 5 wherein said interior face comprises said varnish non-stick in a marked layer, and a heat-sealing varnish in another layer marked, and offset with respect to said cold sealing layer, so that, in said film on reel, a layer of cold sealing of the external face of a turn. is not facing said layer of heat-sealing varnish from another turn. Utilisation d'un film selon une quelconque des revendications 1 à 6 pour l'emballage de produits alimentaires se présentant sous forme de blocs rigides ou semi-rigides.Use of a film according to any one of Claims 1 to 6 for packaging of food products in the form of rigid or semi-rigid blocks.
    EP19980420058 1997-04-09 1998-04-02 Polyolefin film for making a package by folding Expired - Lifetime EP0870695B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9704567A FR2761960B1 (en) 1997-04-09 1997-04-09 POLYOLEFIN-BASED FILM FOR FORMING A FOLDING PACKAGE
    FR9704567 1997-04-09

    Publications (2)

    Publication Number Publication Date
    EP0870695A1 true EP0870695A1 (en) 1998-10-14
    EP0870695B1 EP0870695B1 (en) 2003-11-05

    Family

    ID=9505877

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP19980420058 Expired - Lifetime EP0870695B1 (en) 1997-04-09 1998-04-02 Polyolefin film for making a package by folding

    Country Status (4)

    Country Link
    EP (1) EP0870695B1 (en)
    DE (1) DE69819393T2 (en)
    ES (1) ES2210691T3 (en)
    FR (1) FR2761960B1 (en)

    Cited By (14)

    * Cited by examiner, † Cited by third party
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    EP0990596A1 (en) * 1998-10-02 2000-04-05 Pechiney Emballage Flexible Europe Polyolefin film for making a package by folding
    EP0994039A1 (en) * 1998-10-15 2000-04-19 Transpac N.V. Packaging wrapper
    WO2001025109A1 (en) * 1999-10-07 2001-04-12 Huhtamaki Ronsberg Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg Plastic foil
    EP1231052A1 (en) * 2001-02-07 2002-08-14 Sonoco Development, Inc. Packaging material, method of making it, and package made therefrom
    WO2003076421A1 (en) 2002-03-13 2003-09-18 Janssen Pharmaceutica N.V. Aminocarbonyl-derivatives as novel inhibitors of histone deacetylase
    EP1361168A3 (en) * 2002-05-11 2004-02-11 Huhtamaki Ronsberg Zweigniederlassung der Huhtamaki Deutschland GmbH & Co. KG. Plastic film
    EP1361171A3 (en) * 2002-05-11 2004-06-02 Huhtamaki Ronsberg Zweigniederlassung der Huhtamaki Deutschland GmbH & Co. KG. Plastic film
    EP1449645A1 (en) 2003-02-19 2004-08-25 Alcan Technology & Management Ltd. Packaging film
    US6926951B2 (en) 2001-04-04 2005-08-09 Sonoco Development, Inc. Laminate for gum packaging
    EP1574329A1 (en) 2004-03-09 2005-09-14 Alcan Technology & Management Ltd. Packaging film
    WO2005097489A2 (en) * 2004-04-02 2005-10-20 Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deuschland Gmbh & Co. Kg Windable film for the production of a packaging
    EP2090524A1 (en) 2008-02-13 2009-08-19 Alcan Technology & Management Ltd. Packaging with a block-shaped foodstuff-product
    EP2371735A1 (en) 2010-03-31 2011-10-05 Amcor Flexibles Kreuzlingen Ltd. Packaging film
    DE19948286B4 (en) * 1999-10-07 2013-07-18 Huhtamaki Ronsberg Zn Der Huhtamaki Deutschland Gmbh & Co. Kg Packaging film composite for packaging soup cubes and use thereof for packing soup cubes

    Families Citing this family (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP3698967A1 (en) 2019-02-21 2020-08-26 Amcor Flexibles Sarrebourg Packaging film
    FR3095931B1 (en) 2019-05-13 2022-02-25 Lessonia Packaging for cosmetic products, in particular hermetic bag for cosmetic masks incorporating a support impregnated with a solution

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    FR1468818A (en) * 1965-09-24 1967-02-10 Us Rubber Co Process for the packaging of a tacky elastomeric material and wrapping paper for the implementation of this process
    WO1992019508A1 (en) * 1991-05-02 1992-11-12 United Biscuits (Uk) Limited Improvements in and relating to wrapping food products
    WO1996037418A1 (en) * 1995-05-24 1996-11-28 Highland Supply Corporation Wrapping of food items using sheets having adhesive or cohesive material applied thereto

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    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR1376509A (en) * 1963-05-02 1964-10-31 Bonding process for butter packaging
    FR1468818A (en) * 1965-09-24 1967-02-10 Us Rubber Co Process for the packaging of a tacky elastomeric material and wrapping paper for the implementation of this process
    WO1992019508A1 (en) * 1991-05-02 1992-11-12 United Biscuits (Uk) Limited Improvements in and relating to wrapping food products
    WO1996037418A1 (en) * 1995-05-24 1996-11-28 Highland Supply Corporation Wrapping of food items using sheets having adhesive or cohesive material applied thereto

    Cited By (24)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2784079A1 (en) * 1998-10-02 2000-04-07 Pechiney Emballage Flexible Eu POLYOLEFIN-BASED FILM FOR FORMING A FOLDING PACKAGE
    EP0990596A1 (en) * 1998-10-02 2000-04-05 Pechiney Emballage Flexible Europe Polyolefin film for making a package by folding
    AU755068B2 (en) * 1998-10-15 2002-12-05 Sig Pack Sapal S.A. Packaging wrapper
    EP0994039A1 (en) * 1998-10-15 2000-04-19 Transpac N.V. Packaging wrapper
    WO2000021852A1 (en) 1998-10-15 2000-04-20 Transpac N.V. Packaging wrapper
    AP1585A (en) * 1999-10-07 2006-03-01 Huhtamaki Ronsberg Zweigniederlassund Der Huhtamaki Deutschland Gmbh & Co Kg Plastic foil.
    EP1415932A3 (en) * 1999-10-07 2006-01-04 Huhtamaki Ronsberg Zweigniederlassung der Huhtamaki Deutschland GmbH & Co. KG. Plastic sheet
    DE19948286B4 (en) * 1999-10-07 2013-07-18 Huhtamaki Ronsberg Zn Der Huhtamaki Deutschland Gmbh & Co. Kg Packaging film composite for packaging soup cubes and use thereof for packing soup cubes
    EP1415932A2 (en) 1999-10-07 2004-05-06 Huhtamaki Ronsberg Zweigniederlassung der Huhtamaki Deutschland GmbH & Co. KG. Plastic sheet
    WO2001025109A1 (en) * 1999-10-07 2001-04-12 Huhtamaki Ronsberg Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg Plastic foil
    EP1231052A1 (en) * 2001-02-07 2002-08-14 Sonoco Development, Inc. Packaging material, method of making it, and package made therefrom
    US7341643B2 (en) 2001-02-07 2008-03-11 Sonoco Development, Inc. Method of making packaging material
    US7279205B2 (en) 2001-02-07 2007-10-09 Sonoco Development, Inc. Packaging material
    US6926951B2 (en) 2001-04-04 2005-08-09 Sonoco Development, Inc. Laminate for gum packaging
    WO2003076421A1 (en) 2002-03-13 2003-09-18 Janssen Pharmaceutica N.V. Aminocarbonyl-derivatives as novel inhibitors of histone deacetylase
    EP1361171A3 (en) * 2002-05-11 2004-06-02 Huhtamaki Ronsberg Zweigniederlassung der Huhtamaki Deutschland GmbH & Co. KG. Plastic film
    AU2003203876B2 (en) * 2002-05-11 2005-08-11 Huhtamaki Ronsberg Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co Kg Plastic Film
    EP1361168A3 (en) * 2002-05-11 2004-02-11 Huhtamaki Ronsberg Zweigniederlassung der Huhtamaki Deutschland GmbH & Co. KG. Plastic film
    EP1449645A1 (en) 2003-02-19 2004-08-25 Alcan Technology & Management Ltd. Packaging film
    EP1574329A1 (en) 2004-03-09 2005-09-14 Alcan Technology & Management Ltd. Packaging film
    WO2005097489A3 (en) * 2004-04-02 2005-12-29 Huhtamaki Ronsberg Windable film for the production of a packaging
    WO2005097489A2 (en) * 2004-04-02 2005-10-20 Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deuschland Gmbh & Co. Kg Windable film for the production of a packaging
    EP2090524A1 (en) 2008-02-13 2009-08-19 Alcan Technology & Management Ltd. Packaging with a block-shaped foodstuff-product
    EP2371735A1 (en) 2010-03-31 2011-10-05 Amcor Flexibles Kreuzlingen Ltd. Packaging film

    Also Published As

    Publication number Publication date
    DE69819393D1 (en) 2003-12-11
    FR2761960B1 (en) 1999-05-28
    EP0870695B1 (en) 2003-11-05
    ES2210691T3 (en) 2004-07-01
    FR2761960A1 (en) 1998-10-16
    DE69819393T2 (en) 2004-09-09

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