EP0478414A1 - Protecting envelope for packaging heavy products and packaging method using the same - Google Patents

Protecting envelope for packaging heavy products and packaging method using the same Download PDF

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Publication number
EP0478414A1
EP0478414A1 EP19910402444 EP91402444A EP0478414A1 EP 0478414 A1 EP0478414 A1 EP 0478414A1 EP 19910402444 EP19910402444 EP 19910402444 EP 91402444 A EP91402444 A EP 91402444A EP 0478414 A1 EP0478414 A1 EP 0478414A1
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EP
European Patent Office
Prior art keywords
envelope
packaging
product
protective
heavy products
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Granted
Application number
EP19910402444
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German (de)
French (fr)
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EP0478414B1 (en
Inventor
Jean-Claude Vilas-Boas
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Bull SA
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Bull SA
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    • 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/02—Wrapped articles enclosed in rigid or semi-rigid containers

Definitions

  • the present invention relates to a protective envelope for the packaging of heavy products, made of a flexible plastic material, forming a pocket of substantially rectangular outline closed on three of its four sides, the bottom and the two lateral parts. It also relates to a packaging process using such an envelope.
  • the products to be packaged are protected from shocks by means of wedging systems before being enclosed in packages or in cases.
  • the wedging systems used generally consist of polystyrene blocks in the form of wedges or half-shells having a certain rigidity in order to avoid direct transmission of shocks.
  • the packaged product is inevitably subjected to vibrations and slight displacements and friction inside the wedging system which has the effect of leaving marks and degrading the external appearance of the packaged product (for example deterioration of the paint).
  • a commonly used way to eliminate this risk of degradation is to surround the product of a flexible plastic envelope before affixing the wedging system.
  • the envelope then undergoes friction and vibration but by its flexibility protects the product and thus prevents it from any marking or deterioration.
  • the object of the present invention is to remedy these various drawbacks of the prior art and proposes a protective envelope which, at a practically equivalent cost, offers great flexibility of use during the packaging operation, which can therefore be made easily automated.
  • the protective envelope mentioned in the preamble is remarkable in that the fourth side is also partially closed, while from the bottom is provided a passage means to allow on the one hand the introduction of the product to be packaged in said envelope while the product is held by means of a gripping member and on the other hand the release of the gripping member once the envelope is arranged around the product.
  • the passage means consists of a cutout made from the bottom of the envelope and over its entire thickness in a plane substantially orthogonal and median to said bottom of the envelope and over approximately three quarters of the length of the envelope.
  • An advantageous characteristic of the invention also makes it possible to remedy this other drawback and to considerably facilitate the unpacking operation.
  • the protective envelope further comprises, on its fourth side, a gripping means for extracting and / or holding the product-envelope assembly thus conditioned.
  • the gripping means consists of a strip of material cut in the extension of said envelope over a fraction. center of the width of its fourth side, strip which is closed at its end furthest from the fourth side of the envelope, thus forming a loop making it possible to extract and / or hold the product-envelope assembly.
  • the hand (or any extraction member) can then be passed inside the loop ensuring in a simple and efficient manner the extraction or the support of the product-envelope assembly.
  • the gripping means can comprise a stiffened part ensuring a balanced distribution of the tensile and tension forces over the entire width of the gripping means.
  • This stiffened part can be obtained by welding the strip in extension of the envelope in two symmetrical segments each originating from an edge of the closed end of the strip and for end a common point located on the median axis of the strip. .
  • the protective envelope according to the invention can be advantageously used in a packaging process during which, the heavy product being maintained by means of a gripping member, in a first step called presentation of the envelope, the two ends of the bottom are spaced on either side of the passage means and the envelope thus opened is presented to receive the heavy product, in a second step called laying the envelope, said envelope is engaged and slid around the heavy product until '' to completely cover it, in a third step called inserting wedges a wedging system is arranged on the product-envelope assembly and in a last step called packaging, the product wrapped and fitted with the wedging system in a package while the gripping member is released, free to pass through the passage means.
  • Figure 1 gives an embodiment of a protective envelope according to the invention according to a top view.
  • Figure 2 provides a perspective view of the protective cover of Figure 1.
  • FIG. 3 represents a variant of the protective envelope of FIG. 1.
  • Figure 4 shows in four stages a packaging method using the protective envelope according to the invention.
  • Figure 1 is proposed the top view of an exemplary embodiment of a protective envelope 1 for the packaging of heavy products.
  • This envelope 1 is made of a flexible plastic material forming a pocket of substantially rectangular outline closed on three of its four sides, the bottom S1 and the two lateral parts S2 and S3.
  • the fourth side S4 is partially closed while, from the bottom S1 is provided a passage means 2 to allow on the one hand the introduction of the product to be packaged in said envelope 1 while the product is maintained by means of a gripping member (see figures 4a and 4b) and on the other hand the release of the gripping member once the envelope is placed around the product.
  • the passage means 2 consists of a cutout made from the bottom S1 of the envelope and over its entire thickness along a plane substantially orthogonal and median to said bottom of the envelope and as shown in the example of FIG. 1, over approximately three quarters of the length of the envelope.
  • the protective envelope further comprises, as an extension of its fourth side S4, a gripping means 3 for extracting and / or holding the product-envelope assembly thus conditioned.
  • a gripping means 3 which consists of a strip of material cut in the extension of the casing 1 over a central fraction of the width of its fourth side S4.
  • the strip is closed at its end S5 furthest from the fourth side S4 and thus forms a loop which serves as a handle making it possible to extract from its packaging and / or to hold the product-envelope assembly.
  • the protective envelope can advantageously be produced in series from a hose of flattened flexible plastic material and preferably forming a bellows on each of its lateral parts, each envelope being cut out. to the desired length and shape and closed by welding at the predetermined locations.
  • the casing material used for the manufacture of the protective covering may for example be transparent polyethylene, the thickness of which must be chosen according to the weight of the products to be packaged.
  • the flattened hose with its two lateral bellows 4 and 5 is cut to the desired length and according to the shape (pocket with its extension).
  • the bottom S1, the non-extended part of the side S4 and the end S5 of the gripping means 3 are welded and the cutting of the passage means 2 is carried out.
  • the stiffened part S6 of the gripping means can be obtained by welding the strip 3 along two symmetrical segments each originating from an edge (A, B) of the closed end S5 of the strip and for end a common point C located on the median axis of the strip.
  • the two symmetrical segments are linear and thus generate a stiffened part S6 in the form of an inverted V.
  • the welded surfaces S1, S4, S5 and S6 appear in hatching in FIG. 1.
  • two short cuts 6 and 7 are advantageously made in the extension of gripping means 3 towards the inside of the protective envelope. Cutouts 2, 6 and 7 are shown in phantom in the drawing.
  • Figure 3 is shown a variant of the envelope 1 which can be advantageously produced in series, the gripping means 3 of each envelope then being cut from the bottom of the previous envelope. In this way there is no longer any loss of material and the cost of an envelope can thus be further improved.
  • FIG. 4 are shown diagrammatically four steps (4a, 4b, 4c, 4d) of a conditioning process using the protective envelope 1 according to the invention (the stiffened part S6 is not shown to avoid overloading the drawing ).
  • the product to be packaged 10 is during these four stages maintained by a gripping member 11 which in the figure is represented by a suction cup affixed to the upper surface of said product.
  • the gripping member is preferably articulated so as to orient and move the heavy product without difficulty.
  • Figure 4a is the first step called presentation of the envelope.
  • the two ends of the bottom S1 are spaced on either side of the passage means 2 thus opening the envelope which is presented to cover the product 10.
  • the second so-called envelope laying step is shown in Figure 4b.
  • the envelope 1 is engaged and slid around the product 10 until completely covering it without being hindered by the gripping member 11.
  • the expansion of each of the bellows 4 and 5 allows the envelope to marry the form of product to be packaged 10.
  • the third step is called inserting wedges.
  • the envelope 1 is at this instant completely closed on the product.
  • the wedging system two polystyrene half-shells 12a and 12b are shown here.
  • the product wrapped and fitted with the wedging system is introduced into a package (represented here by a cardboard box 13), the gripping means 3 of the envelope being oriented so as to be find the opening side of the package at the end of the introduction.
  • a package represented here by a cardboard box 13
  • the gripping means 3 of the envelope being oriented so as to be find the opening side of the package at the end of the introduction.
  • the gripping member 11 is released free to pass through the passage means 2.
  • such a protective envelope makes it possible to considerably facilitate the packaging and unpacking operations while remaining simple to execute and at a very moderate cost.
  • the packaging process using such an envelope can be easily automated because the the very design of the envelope makes it possible to mechanize its positioning on the product.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)

Abstract

This protective envelope 1 is particularly well adapted to the packaging of heavy products held by grasping members during the packaging phase. It is closed completely on three sides S1, S2, S3 and partially on the fourth side S4 and provided with a means of passage 2, a simple cut-out. This means 2 allows, on the one hand, the insertion in the envelope of the product to be packaged while the latter is held by a grasping member and, on the other hand, the release of the grasping member once the envelope is disposed around the product. It furthermore comprises, on its partially closed side S4, a means of grasping 3 which facilitates the extraction and holding of the product/envelope assembly during the unpacking of the said assembly. The packaging method using the envelope 1 can be automated easily. <??>Application: Packaging of heavy products. <IMAGE>

Description

La présente invention concerne une enveloppe protectrice pour le conditionnement de produits pesants, constituée d'un matériau en matière plastique souple, formant une poche de contour sensiblement rectangulaire fermée sur trois de ses quatre côtés, le fond et les deux parties latérales. Elle concerne également un procédé de conditionnement utilisant une telle enveloppe.The present invention relates to a protective envelope for the packaging of heavy products, made of a flexible plastic material, forming a pocket of substantially rectangular outline closed on three of its four sides, the bottom and the two lateral parts. It also relates to a packaging process using such an envelope.

Traditionnellement les produits à conditionner, et plus particulièrement lorsque ceux-ci sont fragiles et pesants, sont protégés des chocs au moyen de systèmes de calage avant d'être enfermés dans des emballages ou dans des caisses. Les systèmes de calage utilisés sont généralement constitués de blocs de polystyrène en forme de coins ou de demi-coquilles ayant une certaine rigidité afin d'éviter la transmission directe des chocs. Cependant lors de transport ou de manipulation de ce type d'emballage, le produit conditionné est soumis inévitablement à des vibrations et à de légers déplacements et frottements à l'intérieur du système de calage ce qui a pour effet de laisser des marques et de dégrader l'aspect extérieur du produit conditionné (par exemple détérioration de la peinture).Traditionally, the products to be packaged, and more particularly when these are fragile and heavy, are protected from shocks by means of wedging systems before being enclosed in packages or in cases. The wedging systems used generally consist of polystyrene blocks in the form of wedges or half-shells having a certain rigidity in order to avoid direct transmission of shocks. However during transport or handling of this type of packaging, the packaged product is inevitably subjected to vibrations and slight displacements and friction inside the wedging system which has the effect of leaving marks and degrading the external appearance of the packaged product (for example deterioration of the paint).

Un moyen couramment utilisé pour supprimer ce risque de dégradation consiste à entourer le produit d'une enveloppe en matière plastique souple avant d'y apposer le système de calage. L'enveloppe subit alors frottements et vibrations mais de par sa souplesse protège le produit et évite ainsi à celui-ci tout marquage ou détérioration.A commonly used way to eliminate this risk of degradation is to surround the product of a flexible plastic envelope before affixing the wedging system. The envelope then undergoes friction and vibration but by its flexibility protects the product and thus prevents it from any marking or deterioration.

Néanmoins l'utilisation d'une telle enveloppe de protection présente certains inconvénients. En particulier, lors d'une opération de conditionnement d'un produit pesant celui-ci est souvent maintenu au moyen d'un organe de préhension, par exemple une ventouse articulée appliquée sur la surface supérieure du produit, ceci afin de faciliter les manipulations durant cette opération. Un premier inconvénient apparaît d'abord lorsque l'enveloppe est glissée autour du produit, l'organe de préhension gênant le passage et la fermeture de celle-ci et ensuite lorsqu'il est désiré retirer l'organe de préhension, l'enveloppe gênant alors le passage de celui-ci. Dans ces conditions l'opération de conditionnement ne peut, et ceci au moins lors de ces deux dernières phases, être automatisable.However, the use of such a protective envelope has certain drawbacks. In particular, during a packaging operation of a product weighing it is often maintained by means of a gripping member, for example an articulated suction cup applied to the upper surface of the product, this in order to facilitate handling during this operation. A first drawback appears first when the envelope is slid around the product, the gripping member interfering with the passage and the closing thereof and then when it is desired to remove the gripping member, the troublesome envelope then the passage of it. Under these conditions, the packaging operation cannot, and this at least during these last two phases, be automated.

En outre la fermeture d'une telle enveloppe est malaisée, une fois le produit entouré, il est alors nécessaire de refermer l'ouverture par exemple au moyen d'un ruban adhésif, ce qui engendre de plus une perte de temps et par conséquent un colt supplémentaire.In addition, the closing of such an envelope is difficult, once the product is surrounded, it is then necessary to close the opening for example by means of an adhesive tape, which also generates a loss of time and consequently a additional colt.

La présente invention a pour but de remédier à ces divers inconvénients de l'art antérieur et propose une enveloppe protectrice qui, a un coût pratiquement équivalent, offre une grande souplesse d'emploi lors de l'opération d'emballage, qui dès lors peut être rendue facilement automatisable.The object of the present invention is to remedy these various drawbacks of the prior art and proposes a protective envelope which, at a practically equivalent cost, offers great flexibility of use during the packaging operation, which can therefore be made easily automated.

Pour cela l'enveloppe protectrice mentionnée dans le préambule est remarquable en ce que le quatrième côté est de plus partiellement fermé, alors que à partir du fond est prévu un moyen de passage pour permettre d'une part l'introduction du produit à conditionner dans ladite enveloppe tandis que le produit est maintenu au moyen d'un organe de préhension et d'autre part le dégagement de l'organe de préhension une fois l'enveloppe disposée autour du produit.For this the protective envelope mentioned in the preamble is remarkable in that the fourth side is also partially closed, while from the bottom is provided a passage means to allow on the one hand the introduction of the product to be packaged in said envelope while the product is held by means of a gripping member and on the other hand the release of the gripping member once the envelope is arranged around the product.

Selon une application préférée le moyen de passage consiste en une découpe pratiquée à partir du fond de l'enveloppe et sur la totalité de son épaisseur selon un plan sensiblement orthogonal et médian au dit fond de l'enveloppe et sur environ les trois quarts de la longueur de l'enveloppe.According to a preferred application, the passage means consists of a cutout made from the bottom of the envelope and over its entire thickness in a plane substantially orthogonal and median to said bottom of the envelope and over approximately three quarters of the length of the envelope.

Ainsi l'idée de l'invention permet de faciliter considérablement l'introduction du produit dans l'enveloppe, toute gêne due à la présence de l'organe de préhension étant supprimée grâce au moyen de passage pratiqué dans l'enveloppe qui permet aussi un dégagement commode de l'organe de préhension.Thus the idea of the invention makes it possible to considerably facilitate the introduction of the product into the envelope, any discomfort due to the presence of the gripping member being eliminated thanks to the passage means practiced in the envelope which also allows convenient release of the gripping member.

En outre la fermeture de l'enveloppe est également facilitée puisque celle-ci épouse la forme du produit et qu'il n'est plus nécessaire de refermer l'ouverture au moyen d'un ruban adhésif, ce qui entraîne un gain de temps et une diminution du coût de l'opération d'emballage.In addition, closing the envelope is also facilitated since it follows the shape of the product and it is no longer necessary to close the opening with an adhesive tape, which saves time and reduces the cost of the packaging operation.

Un autre inconvénient concernant l'art antérieur survient au moment du déballage du produit. En effet, afin d'éviter des déplacements à l'intérieur de l'emballage les systèmes de calage sont prévus pour être, une fois le produit protégé, glissés sans jeu dans ledit emballage. Ceci a pour conséquence de provoquer une extraction délicate lors du déballage du produit, celui-ci étant alors coincé à l'intérieur de l'emballage et l'accès étant rendu d'autant plus difficile que le taux de remplissage (rapport en volume du contenant au contenu) est recherché le meilleur possible.Another drawback relating to the prior art occurs when the product is unpacked. In fact, in order to avoid displacements inside the packaging, the wedging systems are designed to be, once the product is protected, slid without play in said packaging. This has the consequence of causing a delicate extraction during the unpacking of the product, the latter then being trapped inside the packaging and access being made all the more difficult as the filling rate (volume ratio of the content) is sought out as best as possible.

Une caractéristique avantageuse de l'invention permet de remédier également à cet autre inconvénient et de faciliter considérablement l'opération de déballage.An advantageous characteristic of the invention also makes it possible to remedy this other drawback and to considerably facilitate the unpacking operation.

Selon cette dernière caractéristique l'enveloppe protectrice comporte de plus en prolongement de son quatrième côté un moyen de préhension pour extraire et/ou tenir l'ensemble produit-enveloppe ainsi conditionné.According to this last characteristic, the protective envelope further comprises, on its fourth side, a gripping means for extracting and / or holding the product-envelope assembly thus conditioned.

Selon une forme de réalisation remarquable de la présente enveloppe le moyen de préhension consiste en une bande de matière découpée dans le prolongement de ladite enveloppe sur une fraction centrale de la largeur de son quatrième côté, bande qui est fermée à son extrémité la plus éloignée du quatrième côté de l'enveloppe, formant ainsi une boucle permettant d'extraire et/ou de tenir l'ensemble produit-enveloppe. La main (ou tout organe d'extraction) peut être alors passée à l'intérieur de la boucle assurant de la sorte de manière simple et efficace l'extraction ou le soutien de l'ensemble produit-enveloppe.According to a remarkable embodiment of the present envelope, the gripping means consists of a strip of material cut in the extension of said envelope over a fraction. center of the width of its fourth side, strip which is closed at its end furthest from the fourth side of the envelope, thus forming a loop making it possible to extract and / or hold the product-envelope assembly. The hand (or any extraction member) can then be passed inside the loop ensuring in a simple and efficient manner the extraction or the support of the product-envelope assembly.

Ainsi l'opération de déballage est de même rendue plus aisée, le moyen de préhension autorisant une extraction et un maintien sans difficulté et sans effort de l'ensemble produit-enveloppe.
De plus, de manière remarquable le moyen de préhension peut comporter une partie rigidifiée assurant une distribution équilibrée des forces de traction et de tension sur la totalité de la largeur du moyen de préhension. Cette partie rigidifiée peut être obtenue par soudage de la bande en prolongement de l'enveloppe selon deux segments symétriques ayant chacun pour origine un bord de l'extrémité fermée de la bande et pour extrémité un point commun situé sur l'axe médian de la bande.Thus the unpacking operation is likewise made easier, the gripping means allowing extraction and maintenance without difficulty and effort of the product-envelope assembly.
In addition, remarkably the gripping means can comprise a stiffened part ensuring a balanced distribution of the tensile and tension forces over the entire width of the gripping means. This stiffened part can be obtained by welding the strip in extension of the envelope in two symmetrical segments each originating from an edge of the closed end of the strip and for end a common point located on the median axis of the strip. .

De cette manière, est obtenu un moyen de préhension encore plus solide résistant efficacement aux efforts de tension ou de traction du fait que la symétrie et la forme de la partie rigidifiée permettent d'assurer judicieusement la répartition des forces. Selon la propriété des segments symétriques (linéaire ou curviligne),différentes formes peuvent être engendrées, en V ou en U dans le cas où le moyen de préhension consiste en une bande découpée dans le prolongement de l'enveloppe ou tout simplement une barrette comportant par exemple une poignée, barrette qui serait soudée sur et en prolongement du quatrième côté de l'enveloppe.In this way, an even more solid gripping means is obtained which is effectively resistant to tension or tensile forces because the symmetry and the shape of the stiffened part make it possible to judiciously ensure the distribution of forces. Depending on the property of the symmetrical segments (linear or curvilinear), different shapes can be generated, in V or in U in the case where the gripping means consists of a strip cut in the extension of the envelope or quite simply a strip comprising for example a handle, strip which would be welded on and in extension of the fourth side of the envelope.

L'enveloppe protectrice selon l'invention peut être avantageusement utilisée dans un procédé de conditionnement au cours duquel, le produit pesant étant maintenu au moyen d'un organe de préhension, dans une première étape dite de présentation de l'enveloppe les deux extrémités du fond sont écartées de part et d'autre du moyen de passage et l'enveloppe ainsi ouverte est présentée pour recevoir le produit pesant, dans une seconde étape dite de pose de l'enveloppe, ladite enveloppe est engagée et glissée autour du produit pesant jusqu'à le recouvrir complètement, dans une troisième étape dite d'insertion de calages un système de calage est disposé sur l'ensemble produit-enveloppe et dans une dernière étape dite d'emballage, le produit enveloppé et muni du système de calage est introduit dans un emballage alors que l'organe de préhension est dégagé, libre de traverser le moyen de passage.The protective envelope according to the invention can be advantageously used in a packaging process during which, the heavy product being maintained by means of a gripping member, in a first step called presentation of the envelope, the two ends of the bottom are spaced on either side of the passage means and the envelope thus opened is presented to receive the heavy product, in a second step called laying the envelope, said envelope is engaged and slid around the heavy product until '' to completely cover it, in a third step called inserting wedges a wedging system is arranged on the product-envelope assembly and in a last step called packaging, the product wrapped and fitted with the wedging system in a package while the gripping member is released, free to pass through the passage means.

Il va de soi qu'un tel procédé peut être utilisé soit manuellement soit de manière automatisée.It goes without saying that such a method can be used either manually or automatically.

La description suivante en regard des dessins annexés, le tout donné à titre d'exemple, fera bien comprendre comment l'invention peut être réalisée.The following description with reference to the accompanying drawings, all given by way of example, will make it clear how the invention can be implemented.

La figure 1 donne un exemple de réalisation d'une enveloppe protectrice selon l'invention selon une vue de dessus.Figure 1 gives an embodiment of a protective envelope according to the invention according to a top view.

La figure 2 propose une vue en perspective de l'enveloppe protectrice de la figure 1.Figure 2 provides a perspective view of the protective cover of Figure 1.

La figure 3 représente une variante de l'enveloppe protectrice de la figure 1.FIG. 3 represents a variant of the protective envelope of FIG. 1.

La figure 4 schématise en quatre étapes un procédé de conditionnement utilisant l'enveloppe protectrice conforme à l'invention.Figure 4 shows in four stages a packaging method using the protective envelope according to the invention.

Sur la figure 1 est proposée la vue de dessus d'un exemple de réalisation d'une enveloppe protectrice 1 pour le conditionnement de produits pesants. Cette enveloppe 1 est constituée d'un matériau en matière plastique souple formant une poche de contour sensiblement rectangulaire fermée sur trois de ses quatre côtés, le fond S1 et les deux parties latérales S2 et S3.
Conformément à l'idée de l'invention le quatrième côté S4 est partiellement fermé alors que, à partir du fond S1 est prévu un moyen de passage 2 pour permettre d'une part l'introduction du produit à conditionner dans ladite enveloppe 1 tandis que le produit est maintenu au moyen d'un organe de préhension (voir figures 4a et 4b) et d'autre part le dégagement de l'organe de préhension une fois l'enveloppe disposée autour du produit.In Figure 1 is proposed the top view of an exemplary embodiment of a protective envelope 1 for the packaging of heavy products. This envelope 1 is made of a flexible plastic material forming a pocket of substantially rectangular outline closed on three of its four sides, the bottom S1 and the two lateral parts S2 and S3.
In accordance with the idea of the invention the fourth side S4 is partially closed while, from the bottom S1 is provided a passage means 2 to allow on the one hand the introduction of the product to be packaged in said envelope 1 while the product is maintained by means of a gripping member (see figures 4a and 4b) and on the other hand the release of the gripping member once the envelope is placed around the product.

Dans le présent exemple d'application le moyen de passage 2 consiste en une découpe pratiquée à partir du fond S1 de l'enveloppe et sur la totalité de son épaisseur selon un plan sensiblement orthogonal et médian au dit fond de l'enveloppe et comme montré sur l'exemple de la figure 1, sur environ les trois quarts de la longueur de l'enveloppe.In the present application example, the passage means 2 consists of a cutout made from the bottom S1 of the envelope and over its entire thickness along a plane substantially orthogonal and median to said bottom of the envelope and as shown in the example of FIG. 1, over approximately three quarters of the length of the envelope.

L'enveloppe protectrice comporte en outre en prolongement de son quatrième côté S4 un moyen de préhension 3 pour extraire et/ou tenir l'ensemble produit-enveloppe ainsi conditionné.The protective envelope further comprises, as an extension of its fourth side S4, a gripping means 3 for extracting and / or holding the product-envelope assembly thus conditioned.

Sur la figure 1 est représenté un moyen de préhension 3 qui consiste en une bande de matière découpée dans le prolongement de l'enveloppe 1 sur une fraction centrale de la largeur de son quatrième côté S4. La bande est fermée à son extrémité S5 la plus éloignée du quatrième côté S4 et forme ainsi une boucle qui sert de poignée permettant d'extraire de son emballage et/ou de tenir l'ensemble produit-enveloppe.In Figure 1 is shown a gripping means 3 which consists of a strip of material cut in the extension of the casing 1 over a central fraction of the width of its fourth side S4. The strip is closed at its end S5 furthest from the fourth side S4 and thus forms a loop which serves as a handle making it possible to extract from its packaging and / or to hold the product-envelope assembly.

De manière pratique l'enveloppe protectrice peut être avantageusement produite en série à partir d'un boyau de matière plastique souple aplati et de préférence formant soufflet sur chacune de ses parties latérales, chaque enveloppe étant découpée à la longueur et selon la forme désirées et fermée par soudage aux emplacements prédéterminés.In practice, the protective envelope can advantageously be produced in series from a hose of flattened flexible plastic material and preferably forming a bellows on each of its lateral parts, each envelope being cut out. to the desired length and shape and closed by welding at the predetermined locations.

Le matériau du boyau utilisé pour la fabrication de l'enveloppe protectrice peut être par exemple du polyéthylène transparent dont l'épaisseur doit être choisie en fonction du poids des produits à conditionner.The casing material used for the manufacture of the protective covering may for example be transparent polyethylene, the thickness of which must be chosen according to the weight of the products to be packaged.

La lecture suivante en combinaison avec l'observation des figures 1 et 2 permettra de mieux appréhender cette dernière opération. Le boyau aplati avec ses deux soufflets latéraux 4 et 5 est découpé à la longueur et selon la forme (poche avec son prolongement )désirées. Le fond S1, la partie non prolongée du côté S4 ainsi que l'extrémité S5 du moyen de préhension 3 sont soudées et la découpe du moyen de passage 2 est effectuée. Simultanément la partie rigidifiée S6 du moyen de préhension peut être obtenue par soudage de la bande 3 selon deux segments symétriques ayant chacun pour origine un bord (A,B) de l'extrémité fermée S5 de la bande et pour extrémité une point commun C situé sur l'axe médian de la bande. Dans la forme de représentation ici proposée, les deux segments symétriques sont linéaires et engendrent ainsi une partie rigidifiée S6 en forme de V renversé. Les surfaces soudées S1, S4, S5 et S6 apparaissent en hachures sur la figure 1. De même afin d'obtenir une boucle d'ampleur suffisante une fois l'enveloppe intimement disposée autour du produit deux courtes découpes 6 et 7 sont avantageusement pratiquées dans le prolongement du moyen de préhension 3 vers l'intérieur de l'enveloppe protectrice. Les découpes 2, 6 et 7 sont représentées en trait mixte sur le dessin.The following reading in combination with the observation of Figures 1 and 2 will help better understand this last operation. The flattened hose with its two lateral bellows 4 and 5 is cut to the desired length and according to the shape (pocket with its extension). The bottom S1, the non-extended part of the side S4 and the end S5 of the gripping means 3 are welded and the cutting of the passage means 2 is carried out. Simultaneously the stiffened part S6 of the gripping means can be obtained by welding the strip 3 along two symmetrical segments each originating from an edge (A, B) of the closed end S5 of the strip and for end a common point C located on the median axis of the strip. In the form of representation proposed here, the two symmetrical segments are linear and thus generate a stiffened part S6 in the form of an inverted V. The welded surfaces S1, S4, S5 and S6 appear in hatching in FIG. 1. Likewise in order to obtain a loop of sufficient magnitude once the envelope is intimately arranged around the product, two short cuts 6 and 7 are advantageously made in the extension of gripping means 3 towards the inside of the protective envelope. Cutouts 2, 6 and 7 are shown in phantom in the drawing.

Sur la figure 3 est représentée une variante de l'enveloppe 1 qui peut être avantageusement produite en série, le moyen de préhension 3 de chaque enveloppe étant alors découpé dans le fond de l'enveloppe précédente. De cette manière il n'y à plus aucune perte de matière et le coût d'une enveloppe peut-être ainsi encore amélioré.In Figure 3 is shown a variant of the envelope 1 which can be advantageously produced in series, the gripping means 3 of each envelope then being cut from the bottom of the previous envelope. In this way there is no longer any loss of material and the cost of an envelope can thus be further improved.

Sur la figure 4 sont schématisées quatre étapes (4a, 4b, 4c, 4d) d'un procédé de conditionnement utilisant l'enveloppe protectrice 1 conforme à l'invention (la partie rigidifiée S6 n'est pas représentée pour éviter de surcharger le dessin). Le produit à conditionner 10 est au cours de ces quatre étapes maintenu par un organe de préhension 11 qui sur la figure est représenté par une ventouse apposée sur la surface supérieure dudit produit. L'organe de préhension est de préférence articulé de manière à orienter et déplacer sans difficulté le produit pesant.In FIG. 4 are shown diagrammatically four steps (4a, 4b, 4c, 4d) of a conditioning process using the protective envelope 1 according to the invention (the stiffened part S6 is not shown to avoid overloading the drawing ). The product to be packaged 10 is during these four stages maintained by a gripping member 11 which in the figure is represented by a suction cup affixed to the upper surface of said product. The gripping member is preferably articulated so as to orient and move the heavy product without difficulty.

La figure 4a constitue la première étape dite de présentation de l'enveloppe. Les deux extrémités du fond S1 sont écartées de part et d'autre du moyen de passage 2 ouvrant ainsi l'enveloppe qui est présentée pour recouvrir le produit 10.Figure 4a is the first step called presentation of the envelope. The two ends of the bottom S1 are spaced on either side of the passage means 2 thus opening the envelope which is presented to cover the product 10.

La seconde étape dite de pose de l'enveloppe est représentée à la figure 4b. L'enveloppe 1 est engagée et glissée autour du produit 10 jusqu'à le recouvrir complètement sans pour autant être gênée par l'organe de préhension 11. L'expansion de chacun des soufflets 4 et 5 permet à l'enveloppe d'épouser la forme du produit à conditionner 10.The second so-called envelope laying step is shown in Figure 4b. The envelope 1 is engaged and slid around the product 10 until completely covering it without being hindered by the gripping member 11. The expansion of each of the bellows 4 and 5 allows the envelope to marry the form of product to be packaged 10.

La troisième étape est dite d'insertion de calages. L'enveloppe 1 est à cet instant complètement refermée sur le produit. Le système de calage (deux demi-coquilles de polystyrène 12a et 12b sont ici représentées) est alors disposé sur l'ensemble produit-enveloppe.The third step is called inserting wedges. The envelope 1 is at this instant completely closed on the product. The wedging system (two polystyrene half-shells 12a and 12b are shown here) is then placed on the product-shell assembly.

Au cours de la dernière étape dite d'emballage le produit enveloppé et muni du système de calage est introduit dans un emballage (représenté ici par une caisse en carton 13), le moyen de préhension 3 de l'enveloppe étant orienté de manière à se trouver du côté de l'ouverture de l'emballage à la fin de l'introduction. Auparavant, c'est-à-dire lorsque l'ensemble produit-enveloppe-calage est partiellement introduit dans l'emballage, l'organe de préhension 11 est dégagé libre de passer au travers du moyen de passage 2.During the last so-called packaging step, the product wrapped and fitted with the wedging system is introduced into a package (represented here by a cardboard box 13), the gripping means 3 of the envelope being oriented so as to be find the opening side of the package at the end of the introduction. Previously, that is to say when the product-envelope-wedge assembly is partially introduced into the packaging, the gripping member 11 is released free to pass through the passage means 2.

En conclusion une telle enveloppe protectrice permet de faciliter considérablement les opérations d'emballage et de déballage tout en restant simple à exécuter et d'un coût très modéré. En outre, le procédé de conditionnement utilisant une telle enveloppe peut être aisément automatisé car la conception même de l'enveloppe permet de mécaniser sa mise en place sur le produit.In conclusion, such a protective envelope makes it possible to considerably facilitate the packaging and unpacking operations while remaining simple to execute and at a very moderate cost. In addition, the packaging process using such an envelope can be easily automated because the the very design of the envelope makes it possible to mechanize its positioning on the product.

Claims (10)

Enveloppe protectrice pour le conditionnement de produits pesants, constituée d'un matériau en matière plastique souple, formant une poche de contour sensiblement rectangulaire fermée sur trois de ses quatre côtés, le fond et les deux parties latérales, caractérisée en ce que le quatrième côté est de plus partiellement fermé, alors que à partir du fond est prévu un moyen de passage pour permettre d'une part l'introduction du produit à conditionner dans ladite enveloppe tandis que le produit est maintenu au moyen d'un organe de préhension et d'autre part le dégagement de l'organe de préhension une fois l'enveloppe disposée autour du produit.Protective envelope for the packaging of heavy products, made of a flexible plastic material, forming a substantially rectangular contour pocket closed on three of its four sides, the bottom and the two lateral parts, characterized in that the fourth side is more partially closed, while from the bottom is provided a passage means to allow on the one hand the introduction of the product to be packaged in said envelope while the product is held by means of a gripping member and on the other hand, the release of the gripping member once the envelope has been placed around the product. Enveloppe protectrice pour le conditionnement de produits pesants selon la revendication 1, caractérisée en ce que le moyen de passage consiste en une découpe pratiquée à partir du fond de l'enveloppe et sur la totalité de son épaisseur selon un plan sensiblement orthogonal et médian au dit fond de l'enveloppe et sur environ les trois quarts de la longueur de l'enveloppe.Protective envelope for the packaging of heavy products according to claim 1, characterized in that the passage means consists of a cutout made from the bottom of the envelope and over its entire thickness along a plane substantially orthogonal and median to said bottom of the envelope and about three-quarters of the length of the envelope. Enveloppe protectrice pour le conditionnement de produits pesants selon la revendication 1 ou 2, caractérisée en ce qu'elle comporte de plus en prolongement de son quatrième côté un moyen de préhension pour extraire et/ou tenir l'ensemble produit-enveloppe ainsi conditionné.Protective envelope for the packaging of heavy products according to claim 1 or 2, characterized in that it further comprises in extension of its fourth side a means of gripping to extract and / or hold the product-envelope assembly thus conditioned. Enveloppe protectrice pour le conditionnement de produits pesants selon la revendication 3, caractérisée en ce que le moyen de préhension consiste en une bande de matière découpée dans le prolongement de ladite enveloppe sur une fraction centrale de la largeur de son quatrième côté, bande qui est fermée à son extrémité la plus éloignée du quatrième côté de l'enveloppe, formant ainsi une boucle permettant d'extraire et/ou de tenir l'ensemble produit-enveloppe.Protective cover for packaging heavy products according to claim 3, characterized in that the gripping means consists of a strip of material cut in the extension of said cover over a central fraction of the width of its fourth side, strip which is closed at its end furthest from the fourth side of the envelope, thus forming a loop making it possible to extract and / or hold the product-envelope assembly. Enveloppe protectrice pour le conditionnement de produits pesants selon la revendication 3 ou 4, caractérisée en ce que le moyen de préhension comporte de plus une partie rigidifiée assurant une distribution équilibrée des forces de traction et de tension sur la totalité de la largeur du moyen de préhension.Protective envelope for the packaging of heavy products according to claim 3 or 4, characterized in that the gripping means further comprises a stiffened part ensuring a balanced distribution of the tensile and tension forces over the entire width of the gripping means . Enveloppe protectrice pour le conditionnement de produits pesants selon la revendication 5, caractérisée en ce que la partie rigidifiée est obtenue par soudage de la bande en prolongement de l'enveloppe selon deux segments symétriques ayant chacun pour origine un bord de l'extrémité fermée de la bande et pour extrémité un point commun situé sur l'axe médian de la bande.Protective envelope for the packaging of heavy products according to claim 5, characterized in that the stiffened part is obtained by welding the strip in extension of the envelope in two symmetrical segments each originating from an edge of the closed end of the strip and for end a common point located on the median axis of the strip. Enveloppe protectrice pour le conditionnement de produits pesants selon l'une des revendications précédentes, caractérisée en ce qu'elle est produite à partir d'un boyau en matière plastique souple et aplati formant soufflet sur chacune de ses parties latérales, chaque enveloppe étant découpée à la longueur et selon la forme désirées et fermée par soudage aux emplacements prédéterminés.Protective cover for packaging heavy products according to one of claims above, characterized in that it is produced from a hose made of flexible and flattened plastic material forming a bellows on each of its lateral parts, each envelope being cut to the desired length and in the desired shape and closed by welding at the predetermined locations . Enveloppe protectrice pour le conditionnement de produits pesants selon la revendication 7, caractérisée en ce que sont pratiquées deux courtes découpes dans le prolongement du moyen de préhension vers l'intérieur de l'enveloppe protectrice.Protective envelope for packaging heavy products according to claim 7, characterized in that two short cuts are made in the extension of the gripping means towards the inside of the protective envelope. Enveloppe protectrice pour le conditionnement de produits pesants selon la revendication 8, caractérisée en ce qu'elle est produite en série, le moyen de préhension de chaque enveloppe étant alors découpé dans le fond de l'enveloppe précédente.Protective envelope for the packaging of heavy products according to claim 8, characterized in that it is produced in series, the gripping means of each envelope then being cut from the bottom of the preceding envelope. Procédé de conditionnement de produits pesants utilisant l'enveloppe protectrice selon l'une quelconque des revendications précédentes, le produit pesant étant maintenu au moyen d'un organe de préhension, caractérisé en ce que dans une première étape dite de présentation de l'enveloppe les deux extrémités du fond sont écartées de part et d'autre du moyen de passage et l'enveloppe ainsi ouverte est présentée pour recouvrir le produit pesant, dans une seconde étape dite de pose de l'enveloppe, ladite enveloppe est engagée et glissée autour du produit pesant jusqu'à le recouvrir complètement, dans une troisième étape dite d'insertion de calages un système de calage est disposé sur l'ensemble produit-enveloppe et dans une dernière étape dite d'emballage, le produit enveloppé et muni du système de calage est introduit dans un emballage alors que l'organe de préhension est dégagé, libre de traverser le moyen de passage.Method for packaging heavy products using the protective envelope according to any one of the preceding claims, the heavy product being held by means of a gripping member, characterized in that in a first step called presentation of the envelope, the two ends of the bottom are spaced apart on either side of the passage means and the envelope thus opened is presented to cover the heavy product, in a second step called laying the envelope, said envelope is engaged and slipped around the heavy product until completely covering it, in a third step called inserting wedges a wedging system is arranged on the product-envelope assembly and in a last step called packaging, the product wrapped and provided the timing system is introduced into a package while the gripping member is released, free to pass through the passage means.
EP91402444A 1990-09-27 1991-09-13 Protecting envelope for packaging heavy products and packaging method using the same Expired - Lifetime EP0478414B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9011946A FR2667296B1 (en) 1990-09-27 1990-09-27 PROTECTIVE COVER FOR THE PACKAGING OF WEIGHTED PRODUCTS AND PACKAGING METHOD USING SUCH A COVER.
FR9011946 1990-09-27

Publications (2)

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EP0478414A1 true EP0478414A1 (en) 1992-04-01
EP0478414B1 EP0478414B1 (en) 1994-01-19

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EP91402444A Expired - Lifetime EP0478414B1 (en) 1990-09-27 1991-09-13 Protecting envelope for packaging heavy products and packaging method using the same

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US (1) US5232148A (en)
EP (1) EP0478414B1 (en)
JP (1) JPH04253658A (en)
DE (1) DE69101045T2 (en)
ES (1) ES2050515T3 (en)
FR (1) FR2667296B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5850963A (en) * 1995-01-03 1998-12-22 Chang; Cherng Reusable gift wrapping assembly
US6655526B2 (en) * 2002-01-08 2003-12-02 Craig A. Urman Enviro package consisting of a sealable thermoplastic bag with an integral exterior pocket and handle for horizontal transport and an open-domed rigid plastic stackable container

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237977A2 (en) * 1986-03-17 1987-09-23 Idemitsu Petrochemical Co. Ltd. Multi-layer film and package
US4759446A (en) * 1986-04-03 1988-07-26 Alps Electric Co., Ltd. Package including handle for removal of housed article

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0237977A2 (en) * 1986-03-17 1987-09-23 Idemitsu Petrochemical Co. Ltd. Multi-layer film and package
US4759446A (en) * 1986-04-03 1988-07-26 Alps Electric Co., Ltd. Package including handle for removal of housed article

Also Published As

Publication number Publication date
FR2667296A1 (en) 1992-04-03
DE69101045D1 (en) 1994-03-03
ES2050515T3 (en) 1994-05-16
FR2667296B1 (en) 1992-11-06
EP0478414B1 (en) 1994-01-19
US5232148A (en) 1993-08-03
JPH04253658A (en) 1992-09-09
DE69101045T2 (en) 1994-05-05

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