EP0775643B1 - Envelope consisting of a heat shrinkable plastic sleeve for packaging at least one object - Google Patents

Envelope consisting of a heat shrinkable plastic sleeve for packaging at least one object Download PDF

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Publication number
EP0775643B1
EP0775643B1 EP19960402484 EP96402484A EP0775643B1 EP 0775643 B1 EP0775643 B1 EP 0775643B1 EP 19960402484 EP19960402484 EP 19960402484 EP 96402484 A EP96402484 A EP 96402484A EP 0775643 B1 EP0775643 B1 EP 0775643B1
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EP
European Patent Office
Prior art keywords
sleeve
flap
reinforcing strip
envelope
envelope according
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.)
Expired - Lifetime
Application number
EP19960402484
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German (de)
French (fr)
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EP0775643A1 (en
Inventor
Eric Fresnel
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.)
Sleever International Co SA
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Sleever International Co SA
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Filing date
Publication date
Application filed by Sleever International Co SA filed Critical Sleever International Co SA
Publication of EP0775643A1 publication Critical patent/EP0775643A1/en
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Publication of EP0775643B1 publication Critical patent/EP0775643B1/en
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Classifications

    • 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
    • B65D71/00—Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottles; Bales of material
    • B65D71/06—Packaging elements holding or encircling completely or almost completely the bundle of articles, e.g. wrappers
    • B65D71/08—Wrappers shrunk by heat or under tension, e.g. stretch films or films tensioned by compressed articles
    • 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
    • B65D23/00—Details of bottles or jars not otherwise provided for
    • B65D23/08—Coverings or external coatings
    • B65D23/0842—Sheets or tubes applied around the bottle with or without subsequent folding operations
    • B65D23/0878—Shrunk on the bottle
    • 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
    • B65D23/00—Details of bottles or jars not otherwise provided for
    • B65D23/12—Means for the attachment of smaller articles
    • B65D23/14—Means for the attachment of smaller articles of tags, labels, cards, coupons, decorations or the like
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
    • G09F3/02—Forms or constructions
    • G09F3/0288—Labels or tickets consisting of more than one part, e.g. with address of sender or other reference on separate section to main label; Multi-copy labels
    • G09F3/0289—Pull- or fold-out labels

Definitions

  • the invention relates to the packaging of objects, and particularly the packaging of consumer products such as food, chemicals, cosmetics, or pharmaceuticals, which generally require information consumer or user, or other purely commercial information.
  • the invention relates to a envelope intended for the packaging of at least one such object a container, which packaging is of the type constituted by a sleeve made of heat-shrinkable plastic suitable for surround at least part of the object closely, and further comprising a complementary flap extending externally by superposition, being connected to the level from its lateral ends to the main portion of the sleeve by two parallel weld lines.
  • a sleeve made of heat-shrinkable plastic general to form an information carrier and / or to provide the relative immobilization of the means of opening and closing (when the object is a container).
  • the flap complementary is in principle intended to be removable, and it then serves to deliver specific information which are present on the flap itself, or on an explanatory note in the pocket formed by the flap with the main portion of the muff.
  • the aforementioned document provides for means of removal such as side stitching, arranged in two lines parallel to the generators of the nearby sleeve of its two lateral ends. These means of removal must allow the additional flap to be easily detached, without altering the sleeve in the separation zone where the flap is detached from the sleeve. It is possible to provide for the use of adhesive means instead of means of removal, but it appears that such use of adhesive means is delicate in the convenient.
  • the envelope illustrated in the above-mentioned document does not also suitable for removing the additional flap in its entirety, not in part only of it.
  • the object of the invention is to improve the envelopes of the type described in the document FR-A-2 698 851, by designing an arrangement of the additional flap which allows easy detachability of one or more parts of this flap without causing deterioration for the sleeve, while resisting forces of retraction.
  • the object of the invention is also to design a envelope that can be used not only for packaging of a single object, but also for the packaging of a group of objects by means of a sleeve with several compartments, in particular a sleeve produced in accordance with document FR-A-2 637 866 by the applicant.
  • an envelope intended for the packaging of at least one object, of the type consisting of a sleeve made of heat-shrinkable plastic able to surround tightly by a main portion at least part of the object in the case of a single object, or of the group of objects in case of plurality of objects, said sleeve further comprising a complementary flap extending externally by superposition by being connected to the level of its lateral ends at the main portion of the sleeve by two parallel weld lines, characterized in that the complementary flap has at least a reinforcement strip in which is practiced at least one cut defining the outline of a tongue gripping whose side edges extend substantially perpendicular to the direction of the strip of reinforcement, the or each cut extending beyond said strip by two slots made in the wall of the flap and forming tear caps, said flap having further a line of pits or the like extending in a direction substantially parallel to the direction of the reinforcement strip and at a distance therefrom, for allow the flap obtained by tearing off the affected portion of said flap
  • the end of cut tongue has all the qualities rigidity and permanence requirements after retraction.
  • the or each reinforcing strip extends along a generatrix of the sleeve, for example being arranged in the vicinity of one of the two weld lines connecting the complementary flap to the main portion of the sleeve.
  • the band of reinforcement can be unique, spanning the entire sleeve height, just like the stitch line or analogues, or even be produced in the form of sections disjoint aligned on the same generator of the sleeve.
  • the or each reinforcement strip can extend in one direction circumferential of the sleeve, being for example arranged in the vicinity of the upper edge or the lower edge of said muff.
  • the reinforcing strip can be unique, and extend over the available length of the complementary flap between the two weld lines connecting said flap to the main portion of the sleeve, just like the line of stings or the like, or be arranged in several sections of strip separated and aligned on the same circumferential line of the sleeve.
  • the or each reinforcing strip will be arranged against the internal face of the complementary flap.
  • the arrangement of the reinforcing strip against the inside of the flap allows to provide an impression of the or each tab on the outer face thereof.
  • traction or each tab detaches one or more several flaps obtained by tearing the portion concerned with the additional flap, this tear being able to be organized in an axial or circumferential direction.
  • the film thickness constituting the sleeve is important (for example exceeding 100 ⁇ m)
  • the complementary flap has lines of micro-perforations connecting each extension slot to the line of stings or the like.
  • the or each section can be printed on the front and / or on the back. It will naturally be possible to predict, for the same complementary flap, several flaps adjacent, identical or different sizes.
  • the film constituting the sleeve will be mono-oriented, in a longitudinal direction or transverse, and the or each reinforcing strip will extend then respectively circumferentially or axially.
  • This mono-orientation contributes to the film's ability to tear in the intended direction, which corresponds to the progressive tearing of the complementary flap as a result of a traction exerted on the associated tongue, this aptitude resulting from the lengthening of the molecular chain of the material of the film during the operation stretching.
  • the cut in the wall of the flap complementary, at the reinforcement strip, with the two extensions in the form of slits extending beyond of said reinforcing strip will preferably be carried out at flat, that is to say before the envelope is shaped for conform it into a sleeve, and organization of the two lines of weld securing the flap complementary to the portion main envelope.
  • the portion main of the sleeve also has at least one strip reinforcement arranged so that the or each strip reinforcement of the complementary flap is superimposed on that (s), to provide additional reinforcement when formation of the cut (s) made on the envelope already formatted.
  • the reinforcement strip (s) are made of plastic, from a film mono-oriented in a determined direction, said or said reinforcing strips being obtained in such a way their longitudinal direction is parallel to this determined direction. This avoids any retraction undesirable cross-section of either band reinforcement.
  • Figure 1 illustrates a container 1 packed with an envelope according to the invention denoted 100.
  • the container 1 comprises a body 2 and a closure plug 3, and the packaging envelope 100 tightly surrounds the body of this container as a result of heat shrinking thereon.
  • a container is of course given by way of example, in order to illustrate a particular case of object wrapped in using an envelope according to the invention.
  • the envelope 100 is constituted by a sleeve made of heat-shrinkable plastic, and has a main portion 101 closely surrounding the body of the containing 1, as well as an additional flap 103 extending externally by superposition being connected by its two lateral ends at the main portion 101 of the sleeve, by two parallel weld lines 102 and 105.
  • the additional flap 103 delimits with the main portion 101 of the sleeve a pocket in which is inserted a notice 10.
  • the envelope 100 thus presents a first weld line 102 which extends along a generatrix of the cylinder formed by said sleeve, and the complementary flap 103 extends externally from this weld line 102 to the second weld line 105 which also extends along a generator of the cylinder.
  • a gripping tab formed by means of a particular cut, and which allows training by tearing of a shutter, until reaching a line of punctures or the like allowing the final separation of the torn shutter.
  • the complementary flap 103 has an added reinforcement strip 106, in which a cutout 110 is made defining the outline of a grip tab 114 with side edges extend substantially perpendicular to the direction of the reinforcing strip 106.
  • the detail in FIG. 2 allows to better distinguish the arrangement of this cutout 110.
  • the cutout 110 through the wall of the flap and the strip of reinforcement 106 associated with it thus comprises a section main 111 extending in the direction of the strip of reinforcement 106 then two lateral sections 112 extending to from the ends of this central section 111, these lateral sections still extending at the level of the strip reinforcement 106.
  • the lateral sections 112 shown here are perpendicular to the central section 111.
  • the cutout 110 extends beyond the reinforcing strip 106 by two slots 113 made in the wall of the complementary flap 103.
  • the end portion of the tongue 114 thus formed is consequently doubled by the cut-out part of the reinforcing strip 106, which ensures the necessary qualities of rigidity and permanently before and after retraction of this tongue gripping.
  • the additional flap 103 also has a line of pits or the like 104 extending in a direction substantially parallel to the direction of the reinforcement strip 106 and at a distance of this one.
  • FIG. 5 thus makes it possible to distinguish this envelope 100, with its two weld lines 102, 105 and its line of stitching or the like 104 made in the complementary flap 103.
  • the reinforcing strip 106 is here disposed against the internal face of the additional flap 103, which is interesting, but in no way obligatory.
  • the width of the cutout (in a circumferential direction) has been noted , part of which d1 extends across the width of the reinforcing strip 106, and another part d2 extends into the wall of the flap 103 beyond the reinforcing strip 106 (this part d2 corresponds to the above-mentioned extension slots 113).
  • FIG. 6 The plan view of Figure 6, showing the developed inner surface of the aforementioned envelope 100, makes it possible to distinguish on the one hand the main portion 101 with its two zones denoted A, A 'associated with the line of weld 102, and its two zones, denoted C, C ′ associated with the welding line 105.
  • the reinforcing strip 106 in which is cut 110 which extends, at both ends, by the two slots 113 relating to the single wall of the complementary flap 103, therefore beyond the strip reinforcement 106.
  • the zones A 'and C' are represented with simple hatching to indicate that these areas are on the inside of the wall, so that zones A and C are represented with hatching crossed to indicate that these areas are behind the wall of the envelope and therefore seen by transparency.
  • the reinforcement strip at another location of the complementary flap, and possibly in another direction.
  • the cutting it can be of various shapes and sizes; it can be multiple or organized in successive cuts, to have a plurality of tabs making it possible to generate as many detachable shutters or coupons.
  • FIG. 7 illustrates a variant in which the positions of the reinforcing strip 106 and the line of bites or the like 104 have been reversed from the previous variant.
  • the resulting tongue 114 of the cut made at the strip of reinforcement 106 is arranged in such a way that the formation of the flap by tearing of the relevant area of the additional flap 103 is done from left to right, i.e. in a direction opposite to that of the variant previous.
  • the reinforcement strip 106 is arranged on the internal face of the additional flap 103, which in particular makes it possible to print the tongue 114 on its outer face, as well as that has been shown diagrammatically in FIG. 7.
  • the strip 106 is constituted by several disjoint sections, here two in number, these sections preferably being aligned according to the same generator of the sleeve.
  • Each of these sections presents a cutout 110 of the same type as the cutout of the variant previous, except that it concerns a height possibly weaker from the sleeve, so that one has two grip tabs 114.
  • Each tab 114 generates a flap or coupon 115 by tear in the wall of the complementary flap 103, this tear being naturally initiated by the slots of extension of each of the cutouts 110, these slots are extending themselves by the lines illustrated in lines mixed 116 corresponding to the tearing of the wall of the flap for each of the two flaps 115.
  • Figure 9 illustrates another variant differing of the previous variant by the fact that the strip of reinforcement 106 (again unique) now has a 110 multiple cut to generate three tabs 114 which are directly contiguous with each other.
  • the three flaps or coupons 115 that can be obtained by pulling on the respective tabs 114, with tear corresponding to the wall of the complementary flap 103, are directly adjacent, i.e. some lines 116 can be common to two adjacent shutters. We then obtain a real system of multiple coupons detachable.
  • Figure 10 illustrates another variant in which the reinforcing strip 106 no longer extends according to a generator of the sleeve, but in a circumferential direction of said sleeve.
  • This reinforcement strip 106 here unique, could naturally be arranged in sections successive arranged in a circumferential line.
  • he at least one cutout 110 is then provided (here three contiguous cuts forming a triple cut) allowing generate one or more flaps 115 obtained by tearing of the wall of the complementary flap 103, this tear taking place along lines 116 which are now arranged along generatrices of the sleeve, the line of pitting 104 being of course arranged accordingly, that is to say here in a circumferential direction.
  • this strip When using a single reinforcement strip which extends along a generatrix of the sleeve, this strip preferably extend over the entire height of the sleeve, just like the line of stings or the like, which considerably simplifies manufacturing. Indeed, we then uses a continuous film coated with an unrolled tape corresponding to the reinforcing strip, this film being cut transversely in sections corresponding to the height desired from the sleeve.
  • this reinforcing strip when we use a single reinforcement strip which extends in one direction circumferential of the sleeve, this reinforcing strip preferably extend over the available length of the flap complementary between the two weld lines connecting said flap to the main portion of the sleeve, as the line of stings or the like. Using a length maximum for the reinforcement strip, it is thus possible to size and / or position the cutout (s) at will depending on the needs.
  • the cuts can be made either on the envelope to flat, or once this envelope is already shaped, that is to say after completion of the two parallel lines of welding.
  • Making the cutout (s) on the envelope flat does not pose any particular difficulty.
  • the main portion of the sleeve also has a reinforcing strip. Such a variant is illustrated in Figures 12 to 14.
  • the envelope illustrated in Figures 12 to 14 differs only from the envelope of FIGS. 1 to 6 by the presence of a reinforcing strip 107 which the portion has main 101 of the sleeve, this reinforcing strip 107 being arranged in such a way that the or each reinforcing strip 106 of the complementary flap 103 is superimposed thereon.
  • a reinforcement strip 107 arranged against the inner wall of the portion main 101, but it goes without saying that we can predict also an arrangement on the outer wall.
  • the reinforcing strip 106 is produced in the form of disjoint sections, provision may also be made for realization in separate sections for the second strip of reinforcement 107, since naturally each of these sections would overlap sections 106 so perform the aforementioned reinforcement function.
  • the reinforcement strip (s) 106,107 will be made in plastic material from a mono-oriented film according to a determined direction, this or these reinforcing bands being then obtained in such a way that their longitudinal direction is parallel to this predetermined direction.
  • the reinforcement strips 106,107 can be made of polyethylene, polypropylene, or polyethylene terephthalate.
  • the film constituting the sleeve will be preferably mono-oriented, in a longitudinal direction or transverse, and the or each reinforcing strip 106 will then extend circumferentially or axially.
  • the reinforcement strip retains all its rigidity.
  • each flap 115 may be printed on the front and / or back.
  • the or each flap 115 may be printed on the front and / or back.
  • the invention applies not only to packaging of a single object, as just described, but also for packaging a group of objects using a sleeve with several compartments, in particular a sleeve produced in accordance with document FR-A-2 637 866 of the plaintiff.
  • This document describes a number of sleeves with several compartments, and in particular a sleeve of the type illustrated in FIGS. 15 to 18 for organization of these two compartments.
  • FIGS 15 to 18 thus illustrate an envelope 200 according to the invention, used to package a group of two containers 11, 12.
  • identical or homologous parts of the envelope 100 previously described will be given the same references increased by one hundred, and will not be subject to new description.
  • a second weld line 208 is provided, arranged at distance from the first weld line 202, so that define an intermediate membrane 209.
  • Line 208 is naturally parallel to line 202, and Figures 16 and 17 allow a better understanding of the form taken by this envelope 200, respectively deposited and retracted on the two objects 11, 12, and before being strung on these two objects.
  • the developed view of Figure 18 thus allows to better distinguish the zones B, B 'associated with the conformation of the second weld line 208. We find by elsewhere zones A, A 'associated with the first line of weld 202, and zones C, C 'associated with the line of welding 205, as for the previous sleeve wrapping a unique object.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)

Description

L'invention concerne l'emballage d'objets, et en particulier le conditionnement de produits de consommation tels que les produits alimentaires, chimiques, cosmétiques, ou pharmaceutiques, qui nécessitent en général une information du consommateur ou de l'utilisateur, ou encore d'autres informations d'ordre purement commercial.The invention relates to the packaging of objects, and particularly the packaging of consumer products such as food, chemicals, cosmetics, or pharmaceuticals, which generally require information consumer or user, or other purely commercial information.

Plus précisément, l'invention est relative à une enveloppe destinée à l'emballage d'au moins un objet tel qu'un contenant, lequel emballage est du type constitué par un manchon en matière plastique thermorétractable apte à entourer étroitement au moins une partie de l'objet, et comportant en outre un rabat complémentaire s'étendant extérieurement par superposition, en étant relié au niveau de ses extrémités latérales à la portion principale du manchon par deux lignes de soudure parallèles. Un tel manchon en matière plastique thermorétractable sert en général à former un support d'informations et/ou à assurer l'immobilisation relative des moyens d'ouverture et de fermeture (lorsque l'objet est un contenant). Le rabat complémentaire est en principe prévu pour être amovible, et il sert alors à délivrer des informations spécifiques supplémentaires qui sont présentes sur le rabat lui-même, ou encore sur une notice explicative disposée dans la pochette que forme le rabat avec la portion principale du manchon.More specifically, the invention relates to a envelope intended for the packaging of at least one such object a container, which packaging is of the type constituted by a sleeve made of heat-shrinkable plastic suitable for surround at least part of the object closely, and further comprising a complementary flap extending externally by superposition, being connected to the level from its lateral ends to the main portion of the sleeve by two parallel weld lines. Such sleeve made of heat-shrinkable plastic general to form an information carrier and / or to provide the relative immobilization of the means of opening and closing (when the object is a container). The flap complementary is in principle intended to be removable, and it then serves to deliver specific information which are present on the flap itself, or on an explanatory note in the pocket formed by the flap with the main portion of the muff.

Une enveloppe de ce type est décrite dans le document FR-A-2 698 851 de la demanderesse. Dans cette enveloppe connue, le rabat complémentaire est d'une seule pièce avec le manchon, et il est relié au manchon proprement dit par deux lignes de soudure parallèles qui s'étendent selon des génératrices du manchon, ces lignes de soudure délimitant la longueur dudit rabat.An envelope of this type is described in the document FR-A-2 698 851 by the applicant. In this known envelope, the additional flap is one piece with the sleeve, and it is connected to the sleeve properly said by two parallel weld lines that extend according to generatrices of the sleeve, these lines of weld delimiting the length of said flap.

Le document précité prévoit des moyens d'arrachement tels que des piqûres latérales, disposés selon deux lignes parallèles aux génératrices du manchon à proximité de ses deux extrémités latérales. Ces moyens d'arrachement doivent permettre de détacher facilement le rabat complémentaire, sans altérer le manchon dans la zone de séparation où le rabat est détaché du manchon. Il est possible de prévoir l'utilisation de moyens adhésifs à la place des moyens d'arrachement, mais il apparaít qu'une telle utilisation de moyens adhésifs est délicate dans la pratique.The aforementioned document provides for means of removal such as side stitching, arranged in two lines parallel to the generators of the nearby sleeve of its two lateral ends. These means of removal must allow the additional flap to be easily detached, without altering the sleeve in the separation zone where the flap is detached from the sleeve. It is possible to provide for the use of adhesive means instead of means of removal, but it appears that such use of adhesive means is delicate in the convenient.

L'enveloppe illustrée dans le document précité ne convient en outre que pour un enlèvement du rabat complémentaire dans son intégralité, et non pour une partie seulement de celui-ci.The envelope illustrated in the above-mentioned document does not also suitable for removing the additional flap in its entirety, not in part only of it.

Le document précité illustre bien l'état de la technique concernant l'utilisation d'une enveloppe en matière plastique thermorétractable à rabat complémentaire, équipée d'une notice explicative disposée dans la pochette que forme le rabat avec le manchon. On peut toutefois rechercher un autre type d'utilisation d'un rabat complémentaire formant une extension d'une enveloppe d'emballage d'objets, et c'est particulièrement le cas lorsque l'on souhaite organiser un système de couponnage, selon lequel un ou plusieurs coupons peuvent être détachés de l'enveloppe, en servant par exemple de bons de remboursement immédiat ou de bons de réduction pour l'achat d'un autre produit.The aforementioned document illustrates well the state of technique concerning the use of an envelope in heat-shrinkable plastic with additional flap, equipped with an explanatory note placed in the pocket formed by the flap with the sleeve. We can however look for another type of use of an additional flap forming an extension of a packaging envelope objects, and this is particularly the case when wishes to organize a couponing system, according to which one or more coupons can be detached from the envelope, for example by using reimbursement vouchers immediate or coupons for the purchase of another product.

L'état de la technique relatif à une telle utilisation est bien illustré dans le document WO 92/02421, qui illustre une enveloppe en carton prolongée par un rabat complémentaire se terminant par une languette de préhension servant à rompre des points de collage agencés sur la hauteur du bord d'extrémité libre du rabat, afin de pouvoir détacher finalement l'ensemble du rabat grâce à une ligne de perforations prévue à l'autre extrémité dudit rabat. Toutefois, cette technique ne convient que pour des enveloppes en papier renforcé ou en carton, et son enseignement est inexploitable pour des enveloppes réalisées à partir d'un film en matière plastique thermorétractable. En effet, si l'on envisageait de reprendre la même structure d'enveloppe avec une matière plastique thermorétractable, on se heurterait à une double difficulté : d'abord il faudrait organiser un soudage convenable au niveau du bord libre du rabat complémentaire (capable de résister aux efforts de traction rencontrés lors de la rétraction), et ensuite la languette de préhension devrait être prévue très épaisse pour d'une part, rompre la ligne de soudure, et d'autre part, présenter une rigidité suffisante pour résister à la déformation lors du passage de l'enveloppe au four pour rétracter ladite enveloppe.The state of the art relating to such use is well illustrated in document WO 92/02421, which illustrates a cardboard envelope extended by a flap complementary ending with a grip tab used to break bonding points arranged on the height of the free end edge of the flap, so that finally detach the entire flap with a line perforations provided at the other end of said flap. However, this technique is only suitable for envelopes of reinforced paper or cardboard, and its teaching cannot be used for envelopes made from a heat-shrinkable plastic film. In indeed, if we were considering taking over the same structure envelope with heat shrinkable plastic, we would come up against a double difficulty: firstly a suitable weld should be organized at the edge free of the additional flap (able to withstand tensile forces encountered during retraction), and then the grip tab should be provided very thick on the one hand, break the weld line, and on the other hand, have sufficient rigidity to resist deformation when passing from the envelope to the oven for shrinking said envelope.

On pourra également se référer au document US-A-4,318,235 qui décrit une étiquette en papier dont la paroi présente une prédécoupe permettant de détacher un panneau central rectangulaire. Outre le fait que l'enveloppe cylindrique formée par l'étiquette ne présente pas de rabat, l'enseignement de ce document est inexploitable pour la réalisation d'une enveloppe en matière plastique thermorétractable, car la prédécoupe concernée ne résisterait pas aux forces de rétraction.We can also refer to document US-A-4,318,235 which describes a paper label whose wall has a pre-cut to detach a panel central rectangular. Besides the fact that the envelope cylindrical formed by the label has no flap, the teaching of this document is unusable for making a plastic envelope heat shrink, because the pre-cut concerned would not resist not retraction forces.

L'état de la technique est enfin illustré par les documents US-A-1 686 354 et BE-A-506 116.The state of the art is finally illustrated by the documents US-A-1 686 354 and BE-A-506 116.

L'invention a pour but de perfectionner les enveloppes du type de celle qui est décrite dans le document FR-A-2 698 851, en concevant un agencement du rabat complémentaire qui permette une détachabilité aisée d'une ou plusieurs parties de ce rabat sans entraíner de détérioration pour le manchon, tout en résistant aux forces de rétraction.The object of the invention is to improve the envelopes of the type described in the document FR-A-2 698 851, by designing an arrangement of the additional flap which allows easy detachability of one or more parts of this flap without causing deterioration for the sleeve, while resisting forces of retraction.

L'invention a aussi pour objet de concevoir une enveloppe qui soit utilisable non seulement pour l'emballage d'un objet unique, mais aussi pour l'emballage d'un groupe d'objets au moyen d'un manchon à plusieurs compartiments, en particulier un manchon réalisé conformément au document FR-A-2 637 866 de la demanderesse.The object of the invention is also to design a envelope that can be used not only for packaging of a single object, but also for the packaging of a group of objects by means of a sleeve with several compartments, in particular a sleeve produced in accordance with document FR-A-2 637 866 by the applicant.

Il s'agit plus particulièrement d'une enveloppe destinée à l'emballage d'au moins un objet, du type constitué par un manchon en matière plastique thermorétractable apte à entourer étroitement par une portion principale au moins une partie de l'objet en cas d'objet unique, ou du groupe d'objets en cas de pluralité d'objets, ledit manchon comprenant en outre un rabat complémentaire s'étendant extérieurement par superposition en étant relié au niveau de ses extrémités latérales à la portion principale du manchon par deux lignes de soudure parallèles, caractérisée en ce que le rabat complémentaire présente au moins une bande rapportée de renfort dans laquelle est pratiquée au moins une découpe définissant le contour d'une languette de préhension dont les bords latéraux s'étendent sensiblement perpendiculairement à la direction de la bande de renfort, la ou chaque découpe se prolongeant au-delà de ladite bande par deux fentes pratiquées dans la paroi du rabat et formant amorces de déchirure, ledit rabat présentant en outre une ligne de piqûres ou analogues s'étendant dans une direction sensiblement parallèle à la direction de la bande de renfort et à distance de celle-ci, pour permettre de détacher le volet obtenu par déchirure de la portion concernée dudit rabat réalisée en tirant la languette associée.It is more particularly an envelope intended for the packaging of at least one object, of the type consisting of a sleeve made of heat-shrinkable plastic able to surround tightly by a main portion at least part of the object in the case of a single object, or of the group of objects in case of plurality of objects, said sleeve further comprising a complementary flap extending externally by superposition by being connected to the level of its lateral ends at the main portion of the sleeve by two parallel weld lines, characterized in that the complementary flap has at least a reinforcement strip in which is practiced at least one cut defining the outline of a tongue gripping whose side edges extend substantially perpendicular to the direction of the strip of reinforcement, the or each cut extending beyond said strip by two slots made in the wall of the flap and forming tear caps, said flap having further a line of pits or the like extending in a direction substantially parallel to the direction of the reinforcement strip and at a distance therefrom, for allow the flap obtained by tearing off the affected portion of said flap produced by pulling the associated tongue.

Grâce à la bande de renfort, l'extrémité de languette découpée présente ainsi toutes les qualités requises de rigidité et de permanence après rétraction. En outre, il devient possible d'organiser avec une très grande liberté le positionnement et la forme de la découpe, et, de prévoir aussi une découpe multiple ou plusieurs découpes séparées générant une pluralité de languettes qui permettent chacune de détacher un volet individuel, conformément à un système de coupons détachables. Thanks to the reinforcement strip, the end of cut tongue has all the qualities rigidity and permanence requirements after retraction. In in addition, it becomes possible to organize with a very large freedom to position and shape the cut, and also provide for multiple cutting or several cuts separated generating a plurality of tabs which allow each to detach an individual flap, in accordance to a system of detachable coupons.

Conformément à un premier mode d'exécution, la ou chaque bande de renfort s'étend selon une génératrice du manchon, en étant par exemple disposée au voisinage de l'une des deux lignes de soudure reliant le rabat complémentaire à la portion principale du manchon. La bande de renfort peut être unique, en s'étendant sur toute la hauteur du manchon, tout comme alors la ligne de piqûres ou analogues, ou encore être réalisée sous forme de tronçons disjoints alignés sur une même génératrice du manchon.In accordance with a first embodiment, the or each reinforcing strip extends along a generatrix of the sleeve, for example being arranged in the vicinity of one of the two weld lines connecting the complementary flap to the main portion of the sleeve. The band of reinforcement can be unique, spanning the entire sleeve height, just like the stitch line or analogues, or even be produced in the form of sections disjoint aligned on the same generator of the sleeve.

Conformément à un autre mode d'exécution, la ou chaque bande de renfort peut s'étendre selon une direction circonférentielle du manchon, en étant par exemple disposée au voisinage du bord supérieur ou du bord inférieur dudit manchon. Là encore, la bande de renfort peut être unique, et s'étendre sur la longueur disponible du rabat complémentaire entre les deux lignes de soudure reliant ledit rabat à la portion principale du manchon, tout comme alors la ligne de piqûres ou analogues, ou encore être agencée en plusieurs tronçons de bande séparés et alignés sur une même ligne circonférentielle du manchon.According to another embodiment, the or each reinforcement strip can extend in one direction circumferential of the sleeve, being for example arranged in the vicinity of the upper edge or the lower edge of said muff. Again, the reinforcing strip can be unique, and extend over the available length of the complementary flap between the two weld lines connecting said flap to the main portion of the sleeve, just like the line of stings or the like, or be arranged in several sections of strip separated and aligned on the same circumferential line of the sleeve.

De préférence, la ou chaque bande de renfort sera disposée contre la face interne du rabat complémentaire. Outre la discrétion dans le cas où la bande de renfort est colorée et le film du rabat transparent, la disposition de la bande de renfort contre la face interne du rabat permet de prévoir une impression de la ou de chaque languette sur la face extérieure de celle-ci.Preferably, the or each reinforcing strip will be arranged against the internal face of the complementary flap. In addition to discretion in the case where the reinforcement strip is colored and the film of the transparent flap, the arrangement of the reinforcing strip against the inside of the flap allows to provide an impression of the or each tab on the outer face thereof.

Ainsi que cela a été dit plus haut, la traction de la ou de chaque languette permet de détacher un ou plusieurs volets obtenus par déchirure de la portion concernée du rabat complémentaire, cette déchirure pouvant être organisée selon une direction axiale ou circonférentielle. Toutefois, notamment lorsque l'épaisseur du film constitutif du manchon est importante (par exemple dépassant 100µm), il peut s'avérer intéressant de procurer une assistance à la déchirure de la paroi du rabat complémentaire, afin que l'ouverture du volet se produise de façon homogène. A cet effet, il pourra s'avérer intéressant de prévoir que le rabat complémentaire présente des lignes de micro-perforations reliant chaque fente de prolongement à la ligne de piqûres ou analogues.As mentioned above, traction or each tab detaches one or more several flaps obtained by tearing the portion concerned with the additional flap, this tear being able to be organized in an axial or circumferential direction. However, especially when the film thickness constituting the sleeve is important (for example exceeding 100µm), it may be worthwhile to provide a assistance in tearing the wall of the complementary flap, so that the shutter opens in such a way homogeneous. To this end, it may be interesting to provide that the complementary flap has lines of micro-perforations connecting each extension slot to the line of stings or the like.

Le ou chaque volet pourra être imprimé au recto et/ou au verso. Il sera naturellement possible de prévoir, pour un même rabat complémentaire, plusieurs volets adjacents, de tailles identiques ou différentes.The or each section can be printed on the front and / or on the back. It will naturally be possible to predict, for the same complementary flap, several flaps adjacent, identical or different sizes.

De préférence, le film constitutif du manchon sera mono-orienté, selon une direction longitudinale ou transversale, et la ou chaque bande de renfort s'étendra alors respectivement circonférentiellement ou axialement. Cette mono-orientation participe à l'aptitude du film à la déchirure dans la direction prévue, qui correspond à la déchirure progressive du rabat complémentaire par suite d'une traction exercée sur la languette associée, cette aptitude résultant de l'allongement de la chaíne moléculaire du matériau constitutif du film lors de l'opération d'étirage.Preferably, the film constituting the sleeve will be mono-oriented, in a longitudinal direction or transverse, and the or each reinforcing strip will extend then respectively circumferentially or axially. This mono-orientation contributes to the film's ability to tear in the intended direction, which corresponds to the progressive tearing of the complementary flap as a result of a traction exerted on the associated tongue, this aptitude resulting from the lengthening of the molecular chain of the material of the film during the operation stretching.

La découpe effectuée dans la paroi du rabat complémentaire, au niveau de la bande de renfort, avec les deux prolongements sous forme de fentes s'étendant au-delà de ladite bande de renfort, sera de préférence effectuée à plat, c'est-à-dire avant mise en forme de l'enveloppe pour la conformer en manchon, et organisation des deux lignes de soudure solidarisant le rabat complémentaire à la portion principale de l'enveloppe. Toutefois, il pourra s'avérer intéressant d'effectuer la ou les découpe(s) une fois l'enveloppe déjà mise en forme. Dans ce cas cependant, la découpe effectuée risque de fragiliser la zone de la portion principale du manchon qui est en regard de la zone découpée du rabat complémentaire. Il est dans ce cas avantageux de prévoir un renforcement local de la portion principale de l'enveloppe, afin de pouvoir utiliser une enclume avec un couteau dont la lame présente le profil de découpe désiré, formant un outil spécifique qui est fonction du besoin concerné. Selon une autre caractéristique de l'invention, il est alors prévu que la portion principale du manchon présente également au moins une bande de renfort disposée de telle façon que la ou chaque bande de renfort du rabat complémentaire se superpose à celle(s)-ci, pour assurer un renfort supplémentaire lors de la formation de la ou des découpes effectuées sur l'enveloppe déjà mise en forme.The cut in the wall of the flap complementary, at the reinforcement strip, with the two extensions in the form of slits extending beyond of said reinforcing strip, will preferably be carried out at flat, that is to say before the envelope is shaped for conform it into a sleeve, and organization of the two lines of weld securing the flap complementary to the portion main envelope. However, it may be interesting to make the cut (s) once the envelope already shaped. In this case, however, the cutting may weaken the area of the main portion of the sleeve which is opposite the area cut from the complementary flap. It is in this case advantageous to provide local reinforcement of the portion main envelope, so you can use a anvil with a knife whose blade has the profile of desired cut, forming a specific tool which is according to the need concerned. According to another characteristic of the invention, it is then expected that the portion main of the sleeve also has at least one strip reinforcement arranged so that the or each strip reinforcement of the complementary flap is superimposed on that (s), to provide additional reinforcement when formation of the cut (s) made on the envelope already formatted.

De préférence enfin, la ou les bandes de renfort sont réalisées en matière plastique, à partir d'un film mono-orienté selon une direction déterminée, ladite ou lesdites bandes de renfort étant obtenues de telle façon que leur direction longitudinale soit parallèle à cette direction déterminée. On évite ainsi toute rétraction transversale indésirable de l'une ou l'autre des bandes de renfort.Preferably finally, the reinforcement strip (s) are made of plastic, from a film mono-oriented in a determined direction, said or said reinforcing strips being obtained in such a way their longitudinal direction is parallel to this determined direction. This avoids any retraction undesirable cross-section of either band reinforcement.

D'autres caractéristiques et avantages de l'invention apparaítront plus clairement à la lumière de la description qui va suivre et des dessins annexés, concernant des modes de réalisation particuliers, en référence aux figures où :

  • la figure 1 illustre en perspective un contenant emballé avec une enveloppe selon l'invention, dont le rabat complémentaire maintient une notice dans la pochette qu'il forme avec le manchon, la languette formée sur le rabat par découpe étant ici encore en place contre la portion principale du manchon ;
  • la figure 2 est une vue partielle en plan illustrant la zone de la languette formée par la découpe, avec ses deux fentes de prolongement s'étendant au-delà de la bande de maintien qui est vue par transparence ;
  • les figures 3 et 4 illustrent la séparation progressive du volet par déchirure de la zone concernée du rabat complémentaire, jusqu'à la séparation du volet obtenu et la libération de la notice précédemment maintenue ;
  • la figure 5 est une vue en bout de l'enveloppe des figures 1 à 4 déjà mise en forme, avant sa mise en place sur le contenant et sa thermorétraction sur ledit contenant ;
  • la figure 6 est une vue en plan de la surface intérieure développée de cette même enveloppe ;
  • la figure 7 illustre une variante dans laquelle la bande de renfort est prévue non pas au voisinage du bord extrême du rabat complémentaire, mais au voisinage de l'autre bord, de sorte que la direction de la traction pour former le volet par déchirure se fait maintenant de la gauche vers la droite ;
  • la figure 8 illustre une autre variante dans laquelle la bande de renfort est réalisée sous forme de deux tronçons disjoints, et deux languettes sont prévues permettant de générer deux volets disjoints par déchirure des zones concernées du rabat complémentaire ;
  • la figure 9 illustre une autre variante dans laquelle la bande de renfort unique présente une triple découpe formant trois languettes accolées prêtes à générer trois volets ou coupons détachables directement adjacents ;
  • la figure 10 illustre une variante dans laquelle la bande de renfort (ici unique) est disposée selon une direction circonférentielle du manchon, de sorte que le détachement des différents volets par déchirure du rabat complémentaire s'effectue verticalement, ici du haut vers le bas ;
  • la figure 11 est une vue en plan de la surface intérieure développée de l'enveloppe correspondant à la figure 10 ;
  • la figure 12 illustre encore une autre variante dans laquelle la portion principale du manchon est elle aussi équipée d'une bande de renfort ;
  • la figure 13 est une vue en bout de l'enveloppe de la figure 12 déjà conformée, avant sa mise en place sur le contenant et sa thermorétraction sur ledit contenant ;
  • la figure 14 est une vue en plan de la surface extérieure développée de l'enveloppe des figures 12 et 13;
  • les figures 15 et 16 sont des vues en élévation et de dessus schématiques d'un groupe de deux contenants emballés avec une enveloppe conforme à l'invention, ladite enveloppe étant ici une enveloppe à deux compartiments ;
  • la figure 17 est une vue en bout de l'enveloppe des figures 15 et 16 déjà conformée, avant sa mise en place sur les deux contenants et sa thermorétraction sur ces contenants ;
  • la figure 18 est une vue en plan de la surface intérieure développée de l'enveloppe des figures 15 à 17.
Other characteristics and advantages of the invention will appear more clearly in the light of the description which follows and of the appended drawings, relating to particular embodiments, with reference to the figures in which:
  • FIG. 1 illustrates in perspective a container packed with an envelope according to the invention, the complementary flap of which maintains a notice in the pocket which it forms with the sleeve, the tongue formed on the flap by cutting being here again in place against the main portion of the sleeve;
  • Figure 2 is a partial plan view illustrating the area of the tongue formed by the cut, with its two extension slots extending beyond the retaining strip which is seen by transparency;
  • FIGS. 3 and 4 illustrate the progressive separation of the flap by tearing of the zone concerned of the complementary flap, until the separation of the flap obtained and the release of the notice previously maintained;
  • Figure 5 is an end view of the envelope of Figures 1 to 4 already shaped, before its implementation on the container and its heat shrinkage on said container;
  • FIG. 6 is a plan view of the developed inner surface of this same envelope;
  • FIG. 7 illustrates a variant in which the reinforcing strip is provided not in the vicinity of the extreme edge of the complementary flap, but in the vicinity of the other edge, so that the direction of traction to form the flap by tearing is done now from left to right;
  • FIG. 8 illustrates another variant in which the reinforcing strip is produced in the form of two disjointed sections, and two tongues are provided making it possible to generate two disjointed flaps by tearing the areas concerned of the complementary flap;
  • FIG. 9 illustrates another variant in which the single reinforcing strip has a triple cut forming three joined tabs ready to generate three directly adjacent flaps or detachable coupons;
  • FIG. 10 illustrates a variant in which the reinforcing strip (here unique) is arranged in a circumferential direction of the sleeve, so that the detachment of the different flaps by tearing the complementary flap takes place vertically, here from top to bottom;
  • Figure 11 is a plan view of the developed inner surface of the envelope corresponding to Figure 10;
  • FIG. 12 illustrates yet another variant in which the main portion of the sleeve is also equipped with a reinforcing strip;
  • FIG. 13 is an end view of the envelope of FIG. 12 already shaped, before it is placed on the container and its heat shrinkage on said container;
  • Figure 14 is a plan view of the developed outer surface of the casing of Figures 12 and 13;
  • Figures 15 and 16 are schematic elevational views from above of a group of two containers packed with an envelope according to the invention, said envelope here being an envelope with two compartments;
  • Figure 17 is an end view of the envelope of Figures 15 and 16 already shaped, before its implementation on the two containers and its heat shrinkage on these containers;
  • FIG. 18 is a plan view of the interior developed surface of the envelope of FIGS. 15 to 17.

La figure 1 illustre un contenant 1 emballé avec une enveloppe selon l'invention notée 100. Le contenant 1 comporte un corps 2 et un bouchon de fermeture 3, et l'enveloppe d'emballage 100 entoure étroitement le corps de ce contenant par suite d'une thermorétraction sur celui-ci. Un tel contenant est bien entendu donné à titre d'exemple, afin d'illustrer un cas particulier d'objet emballé à l'aide d'une enveloppe conforme à l'invention.Figure 1 illustrates a container 1 packed with an envelope according to the invention denoted 100. The container 1 comprises a body 2 and a closure plug 3, and the packaging envelope 100 tightly surrounds the body of this container as a result of heat shrinking thereon. Such a container is of course given by way of example, in order to illustrate a particular case of object wrapped in using an envelope according to the invention.

L'enveloppe 100 est constituée par un manchon en matière plastique thermorétractable, et comporte une portion principale 101 entourant étroitement le corps du contenant 1, ainsi qu'un rabat complémentaire 103 s'étendant extérieurement par superposition en étant relié par ses deux extrémités latérales à la portion principale 101 du manchon, par deux lignes de soudure parallèles 102 et 105. En l'espèce, le rabat complémentaire 103 délimite avec la portion principale 101 du manchon une pochette dans laquelle est insérée une notice 10. L'enveloppe 100 présente ainsi une première ligne de soudure 102 qui s'étend selon une génératrice du cylindre formé par ledit manchon, et le rabat complémentaire 103 s'étend extérieurement à partir de cette ligne de soudure 102 jusqu'à la deuxième ligne de soudure 105 qui s'étend également selon une génératrice du cylindre.The envelope 100 is constituted by a sleeve made of heat-shrinkable plastic, and has a main portion 101 closely surrounding the body of the containing 1, as well as an additional flap 103 extending externally by superposition being connected by its two lateral ends at the main portion 101 of the sleeve, by two parallel weld lines 102 and 105. In the present case, the additional flap 103 delimits with the main portion 101 of the sleeve a pocket in which is inserted a notice 10. The envelope 100 thus presents a first weld line 102 which extends along a generatrix of the cylinder formed by said sleeve, and the complementary flap 103 extends externally from this weld line 102 to the second weld line 105 which also extends along a generator of the cylinder.

Pour accéder à la notice 10 logée dans la pochette associée, il est nécessaire de détacher au moins une partie du rabat complémentaire 103. A cet effet, il est prévu une languette de préhension formée au moyen d'une découpe particulière, et qui permet la formation par déchirure d'un volet, jusqu'à atteindre une ligne de piqûres ou analogues permettant la séparation définitive du volet déchiré.To access leaflet 10 housed in the pocket associated, it is necessary to detach at least one part of the complementary flap 103. For this purpose, it is provided a gripping tab formed by means of a particular cut, and which allows training by tearing of a shutter, until reaching a line of punctures or the like allowing the final separation of the torn shutter.

Ainsi, et conformément à une caractéristique essentielle de l'invention, le rabat complémentaire 103 présente une bande rapportée de renfort 106, dans laquelle est pratiquée une découpe 110 définissant le contour d'une languette de préhension 114 dont les bords latéraux s'étendent sensiblement perpendiculairement à la direction de la bande de renfort 106. Le détail de la figure 2 permet de mieux distinguer l'agencement de cette découpe 110. La découpe 110 traversant la paroi du rabat et la bande de renfort 106 qui lui est associée, comporte ainsi un tronçon principal 111 s'étendant dans la direction de la bande de renfort 106 puis deux tronçons latéraux 112 s'étendant à partir des extrémités de ce tronçon central 111, ces tronçons latéraux s'étendant encore au niveau de la bande de renfort 106. Les tronçons latéraux 112 représentés ici sont perpendiculaires au tronçon central 111. On pourra toutefois prévoir un angle inférieur ou supérieur à 90°, comme cela est schématisé sur la figure 2 par la plage angulaire notée α. Dans la pratique, les tronçons 111,112 formeront entre eux un angle allant de 80° à 120°. Ceci vise à bien faire comprendre que l'expression "sensiblement perpendiculairement" utilisée plus haut ne doit en aucun cas être comprise dans un sens restrictif, mais qu'au contraire cette expression englobe une certaine plage angulaire de part et d'autre de ce qui peut être considéré comme une direction générale.So, and according to a characteristic essential of the invention, the complementary flap 103 has an added reinforcement strip 106, in which a cutout 110 is made defining the outline of a grip tab 114 with side edges extend substantially perpendicular to the direction of the reinforcing strip 106. The detail in FIG. 2 allows to better distinguish the arrangement of this cutout 110. The cutout 110 through the wall of the flap and the strip of reinforcement 106 associated with it, thus comprises a section main 111 extending in the direction of the strip of reinforcement 106 then two lateral sections 112 extending to from the ends of this central section 111, these lateral sections still extending at the level of the strip reinforcement 106. The lateral sections 112 shown here are perpendicular to the central section 111. We can however, provide an angle less than or greater than 90 °, as shown in Figure 2 by the range angular noted α. In practice, sections 111,112 will form an angle between them of 80 ° to 120 °. This aims to make it clear that the expression "substantially perpendicularly "used above must in no way case be understood in a restrictive sense, but only otherwise this expression encompasses a certain range angular on either side of what can be considered as a branch.

En outre, la découpe 110 se prolonge au-delà de la bande de renfort 106 par deux fentes 113 pratiquées dans la paroi du rabat complémentaire 103. La portion d'extrémité de la languette 114 ainsi formée est par suite doublée par la partie découpée de la bande de renfort 106, ce qui permet de garantir les qualités nécessaires de rigidité et de permanence avant et après rétraction de cette languette de préhension. Les deux fentes 113 pratiquées dans la paroi du rabat 103, au-delà de la bande de renfort 106, forment ainsi des amorces de déchirure. Le rabat complémentaire 103 présente par ailleurs une ligne de piqûres ou analogues 104 s'étendant dans une direction sensiblement parallèle à la direction de la bande de renfort 106 et à distance de celle-ci.In addition, the cutout 110 extends beyond the reinforcing strip 106 by two slots 113 made in the wall of the complementary flap 103. The end portion of the tongue 114 thus formed is consequently doubled by the cut-out part of the reinforcing strip 106, which ensures the necessary qualities of rigidity and permanently before and after retraction of this tongue gripping. The two slots 113 made in the wall of the flap 103, beyond the reinforcement strip 106, form thus tear primers. The additional flap 103 also has a line of pits or the like 104 extending in a direction substantially parallel to the direction of the reinforcement strip 106 and at a distance of this one.

Il est alors possible de détacher un volet 115 obtenu par déchirure de la portion concernée du rabat 103, laquelle déchirure est réalisée en tirant la languette associée 114. Sur la figure 3, on a commencé à tirer la languette 114 et à réaliser une partie de la déchirure de la portion concernée du rabat complémentaire 103, en agrandissant ainsi les deux fentes de prolongement 113, les lignes de déchirure à suivre étant illustrées par des traits mixtes 116. Sur la figure 4, le volet 115 a été complètement dégagé par déchirure de la paroi du rabat jusqu'à la ligne de piqûres 104, ce qui permet de détacher ce volet, et de dégager la notice explicative 10 qui était jusque là retenue prisonnière.It is then possible to detach a flap 115 obtained by tearing the relevant portion of the flap 103, which tear is made by pulling the tab associated 114. In FIG. 3, we have started to draw the tongue 114 and to carry out part of the tear of the relevant portion of the complementary flap 103, in thus enlarging the two extension slots 113, the tear lines to be followed being illustrated by dashed lines 116. In FIG. 4, the flap 115 has been completely cleared by tearing the wall of the flap up to stitch line 104, which allows you to detach this section, and to extract the explanatory note 10 which was hitherto held captive.

La vue en bout de la figure 5 permet ainsi de distinguer cette enveloppe 100, avec ses deux lignes de soudure 102,105 et sa ligne de piqûres ou analogues 104 pratiquée dans le rabat complémentaire 103. La bande de renfort 106 est ici disposée contre la face interne du rabat complémentaire 103, ce qui est intéressant, mais nullement obligatoire. On a noté d la largeur de la découpe (selon une direction circonférentielle) dont une partie d1 s'étend dans la largeur de la bande de renfort 106, et une autre partie d2 s'étend dans la paroi du rabat 103 au-delà de la bande de renfort 106 (cette partie d2 correspond aux fentes de prolongement 113 précitées).The end view of FIG. 5 thus makes it possible to distinguish this envelope 100, with its two weld lines 102, 105 and its line of stitching or the like 104 made in the complementary flap 103. The reinforcing strip 106 is here disposed against the internal face of the additional flap 103, which is interesting, but in no way obligatory. The width of the cutout (in a circumferential direction) has been noted , part of which d1 extends across the width of the reinforcing strip 106, and another part d2 extends into the wall of the flap 103 beyond the reinforcing strip 106 (this part d2 corresponds to the above-mentioned extension slots 113).

La vue en plan de la figure 6, montrant la surface intérieure développée de l'enveloppe 100 précitée, permet de distinguer d'une part la portion principale 101 avec ses deux zones notées A, A' associées à la ligne de soudure 102, et ses deux zones, notées C, C' associées à la ligne de soudure 105. On distingue également le rabat complémentaire 103, relié à la portion principale 101 de l'enveloppe par la ligne de piqûres 104, lequel rabat complémentaire présente une zone terminale C' associée à la zone précitée C pour former la ligne de soudure 105. Ainsi que cela est aisé à comprendre, lorsque l'enveloppe 100 est conformée, les zones A et A' sont superposées pour former la ligne de soudure 102, et les zones C et C' sont superposées pour former la ligne de soudure 105. On distingue également la bande de renfort 106, dans laquelle est pratiquée la découpe 110 qui se prolonge, à ses deux extrémités, par les deux fentes 113 concernant la seule paroi du rabat complémentaire 103, au-delà donc de la bande de renfort 106. Sur la figure 6, les zones A' et C' sont représentées avec des hachures simples pour indiquer que ces zones sont sur la face intérieure de la paroi, alors que les zones A et C sont représentées avec des hachures croisées pour indiquer que ces zones sont derrière la paroi de l'enveloppe et donc vues par transparence.The plan view of Figure 6, showing the developed inner surface of the aforementioned envelope 100, makes it possible to distinguish on the one hand the main portion 101 with its two zones denoted A, A 'associated with the line of weld 102, and its two zones, denoted C, C ′ associated with the welding line 105. There is also a flap complementary 103, connected to the main portion 101 of the envelope by the stitch line 104, which flaps complementary has a terminal area C 'associated with the aforementioned zone C to form the weld line 105. Thus that this is easy to understand, when the envelope 100 is conformed, zones A and A 'are superimposed to form the weld line 102, and the zones C and C 'are superimposed to form the weld line 105. There are also the reinforcing strip 106, in which is cut 110 which extends, at both ends, by the two slots 113 relating to the single wall of the complementary flap 103, therefore beyond the strip reinforcement 106. In FIG. 6, the zones A 'and C' are represented with simple hatching to indicate that these areas are on the inside of the wall, so that zones A and C are represented with hatching crossed to indicate that these areas are behind the wall of the envelope and therefore seen by transparency.

Le mode de réalisation qui vient d'être décrit ne constitue qu'un exemple de mise en oeuvre de l'invention, et il est possible d'envisager de nombreuses variantes rentrant dans le cadre de l'invention.The embodiment which has just been described does not constitutes an example of implementation of the invention, and it is possible to consider many variations falling within the scope of the invention.

Ainsi, on pourra disposer la bande de renfort à un autre emplacement du rabat complémentaire, et éventuellement selon une autre direction. On pourra également prévoir une bande de renfort réalisée en tronçons disjoints. Pour ce qui est de la découpe, celle-ci pourra être de formes et dimensions variées ; elle pourra être multiple ou organisée en découpes successives, pour avoir une pluralité de languettes permettant de générer autant de volets ou coupons détachables.Thus, we can arrange the reinforcement strip at another location of the complementary flap, and possibly in another direction. We can also provide a reinforcing strip made of disjoint sections. As for the cutting, it can be of various shapes and sizes; it can be multiple or organized in successive cuts, to have a plurality of tabs making it possible to generate as many detachable shutters or coupons.

Certaines de ces variantes sont illustrées aux figures 7 à 11, sur lesquelles on a conservé les mêmes références pour les éléments homologues, de sorte que la description de ces figures sera faite plus rapidement.Some of these variants are illustrated in Figures 7 to 11, in which we have kept the same references for peer elements, so the description of these figures will be made more quickly.

La figure 7 illustre une variante dans laquelle les positions de la bande de renfort 106 et de la ligne de piqûres ou analogues 104 ont été inversées par rapport à la variante précédente. Dans ce cas, la languette 114 résultant de la découpe effectuée au niveau de la bande de renfort 106 est disposée de telle façon que la formation du volet par déchirure de la zone concernée du rabat complémentaire 103 s'effectue de la gauche vers la droite, c'est-à-dire dans une direction opposée à celle de la variante précédente. En outre, comme pour la variante précédente, la bande de renfort 106 est disposée sur la face interne du rabat complémentaire 103, ce qui permet notamment d'imprimer la languette 114 sur sa face extérieure, ainsi que cela a été représenté schématiquement sur la figure 7.FIG. 7 illustrates a variant in which the positions of the reinforcing strip 106 and the line of bites or the like 104 have been reversed from the previous variant. In this case, the resulting tongue 114 of the cut made at the strip of reinforcement 106 is arranged in such a way that the formation of the flap by tearing of the relevant area of the additional flap 103 is done from left to right, i.e. in a direction opposite to that of the variant previous. In addition, as for the previous variant, the reinforcement strip 106 is arranged on the internal face of the additional flap 103, which in particular makes it possible to print the tongue 114 on its outer face, as well as that has been shown diagrammatically in FIG. 7.

Sur la figure 8, la bande 106 est constituée par plusieurs tronçons disjoints, ici au nombre de deux, ces tronçons étant de préférence alignés selon une même génératrice du manchon. Chacun de ces tronçons présente une découpe 110 du même type que la découpe de la variante précédente, si ce n'est qu'elle concerne une hauteur éventuellement plus faible du manchon, de sorte que l'on dispose de deux languettes de préhension 114. Chaque languette 114 permet de générer un volet ou coupon 115 par déchirure de la paroi du rabat complémentaire 103, cette déchirure étant naturellement amorcée par les fentes de prolongement de chacune des découpes 110, ces fentes se prolongeant elles-mêmes par les lignes illustrées en traits mixtes 116 correspondant à la déchirure de la paroi du rabat pour chacun des deux volets 115.In FIG. 8, the strip 106 is constituted by several disjoint sections, here two in number, these sections preferably being aligned according to the same generator of the sleeve. Each of these sections presents a cutout 110 of the same type as the cutout of the variant previous, except that it concerns a height possibly weaker from the sleeve, so that one has two grip tabs 114. Each tab 114 generates a flap or coupon 115 by tear in the wall of the complementary flap 103, this tear being naturally initiated by the slots of extension of each of the cutouts 110, these slots are extending themselves by the lines illustrated in lines mixed 116 corresponding to the tearing of the wall of the flap for each of the two flaps 115.

La figure 9 illustre une autre variante différant de la variante précédente par le fait que la bande de renfort 106 (à nouveau unique) présente maintenant une découpe 110 multiple permettant de générer trois languettes 114 qui sont directement contiguës entre elles. Dans ce cas, les trois volets ou coupons 115 que l'on peut obtenir en tirant sur les languettes respectives 114, avec déchirure correspondante de la paroi du rabat complémentaire 103, sont directement adjacents, c'est-à-dire que certaines lignes 116 peuvent être communes à deux volets adjacents. On obtient alors un véritable système de coupons multiples détachables.Figure 9 illustrates another variant differing of the previous variant by the fact that the strip of reinforcement 106 (again unique) now has a 110 multiple cut to generate three tabs 114 which are directly contiguous with each other. In this case, the three flaps or coupons 115 that can be obtained by pulling on the respective tabs 114, with tear corresponding to the wall of the complementary flap 103, are directly adjacent, i.e. some lines 116 can be common to two adjacent shutters. We then obtain a real system of multiple coupons detachable.

La figure 10 illustre une autre variante dans laquelle la bande de renfort 106 s'étend non plus selon une génératrice du manchon, mais selon une direction circonférentielle dudit manchon. Cette bande de renfort 106, ici unique, pourra naturellement être agencée en tronçons successifs agencés selon une ligne circonférentielle. Il est alors prévu au moins une découpe 110 (ici trois découpes contiguës formant une triple découpe) permettant de générer un ou plusieurs volets 115 obtenus par déchirure de la paroi du rabat complémentaire 103, cette déchirure s'effectuant alors selon des lignes 116 qui sont maintenant disposées selon des génératrices du manchon, la ligne de piqûres 104 étant bien entendu disposée en conséquence, c'est-à-dire ici selon une direction circonférentielle. Il est possible de détacher l'un quelconque des volets 115 sous forme de coupons individuels, ici du haut vers le bas. Il va de soi que l'on pourra en variante prévoir de disposer la bande de renfort 106, toujours selon une direction circonférentielle, mais au voisinage du bord inférieur du manchon, auquel cas le dégagement de chacun des volets se fera en tirant sur la languette 114 correspondante du bas vers le haut. La vue en plan de la figure 11 permet de mieux distinguer l'agencement de l'enveloppe de la figure 10, avec sa bande de renfort 106 disposée selon la longueur de l'enveloppe à plat, la ligne de piqûres 104 étant parallèle à cette bande de renfort 106, et disposée au niveau du bord opposé de la portion de l'enveloppe correspondant au rabat complémentaire 103.Figure 10 illustrates another variant in which the reinforcing strip 106 no longer extends according to a generator of the sleeve, but in a circumferential direction of said sleeve. This reinforcement strip 106, here unique, could naturally be arranged in sections successive arranged in a circumferential line. he at least one cutout 110 is then provided (here three contiguous cuts forming a triple cut) allowing generate one or more flaps 115 obtained by tearing of the wall of the complementary flap 103, this tear taking place along lines 116 which are now arranged along generatrices of the sleeve, the line of pitting 104 being of course arranged accordingly, that is to say here in a circumferential direction. he it is possible to detach any of the flaps 115 in the form of individual coupons, here from top to bottom. It goes without saying that we can alternatively provide arrange the reinforcing strip 106, always according to a circumferential direction, but near the edge lower of the sleeve, in which case the clearance of each shutters will be done by pulling on the corresponding tongue 114 from the bottom to the top. The plan view of the figure 11 makes it possible to better distinguish the arrangement of the envelope of Figure 10, with its reinforcing strip 106 disposed depending on the length of the flat envelope, the line of stitching 104 being parallel to this reinforcing strip 106, and arranged at the opposite edge of the portion of the envelope corresponding to the complementary flap 103.

Lorsque l'on utilise une bande unique de renfort qui s'étend selon une génératrice du manchon, cette bande s'étendra de préférence sur toute la hauteur du manchon, tout comme la ligne de piqûres ou analogues, ce qui simplifie considérablement la fabrication. En effet, on utilise alors un film continu revêtu d'un ruban déroulé correspondant à la bande de renfort, ce film étant découpé transversalement en tronçons correspondant à la hauteur désirée du manchon. De la même façon, lorsque l'on utilise une bande unique de renfort qui s'étend selon une direction circonférentielle du manchon, cette bande de renfort s'étendra de préférence sur la longueur disponible du rabat complémentaire entre les deux lignes de soudure reliant ledit rabat à la portion principale du manchon, tout comme la ligne de piqûres ou analogues. En utilisant une longueur maximale pour la bande de renfort, on permet ainsi de dimensionner et/ou positionner à volonté la ou les découpes en fonction des besoins.When using a single reinforcement strip which extends along a generatrix of the sleeve, this strip preferably extend over the entire height of the sleeve, just like the line of stings or the like, which considerably simplifies manufacturing. Indeed, we then uses a continuous film coated with an unrolled tape corresponding to the reinforcing strip, this film being cut transversely in sections corresponding to the height desired from the sleeve. Likewise, when we use a single reinforcement strip which extends in one direction circumferential of the sleeve, this reinforcing strip preferably extend over the available length of the flap complementary between the two weld lines connecting said flap to the main portion of the sleeve, as the line of stings or the like. Using a length maximum for the reinforcement strip, it is thus possible to size and / or position the cutout (s) at will depending on the needs.

Ainsi que cela a été indiqué plus haut, la ou les découpes peuvent être réalisées soit sur l'enveloppe à plat, soit une fois cette enveloppe déjà conformée, c'est-à-dire après réalisation des deux lignes parallèles de soudure. La réalisation de la ou des découpes sur l'enveloppe à plat ne pose aucune difficulté particulière. Par contre, si l'on veut effectuer cette ou ces découpes sur l'enveloppe déjà conformée, il existe un risque de marquer la paroi extérieure de la portion principale du manchon par contact avec une partie de l'outil de coupe servant à réaliser la ou les découpe(s) dans le rabat complémentaire. On pourrait alors générer un risque de marques ou fissurations localisées dans la portion principale, fissurations qui sont hautement indésirables dans la mesure où elles seraient naturellement agrandies lors de la thermorétraction de l'enveloppe sur l'objet, induisant ainsi un risque de rupture inacceptable. Pour éviter cet inconvénient, il est intéressant de prévoir que la portion principale du manchon présente elle aussi une bande de renfort. Une telle variante est illustrée aux figures 12 à 14.As indicated above, the cuts can be made either on the envelope to flat, or once this envelope is already shaped, that is to say after completion of the two parallel lines of welding. Making the cutout (s) on the envelope flat does not pose any particular difficulty. Through against, if we want to make this or these cuts on the envelope already conformed, there is a risk of marking the outer wall of the main portion of the sleeve by contact with part of the cutting tool used to make the cutout (s) in the additional flap. We could then generate a risk of marks or cracks located in the main portion, cracks which are highly undesirable to the extent that they would be naturally enlarged during heat shrinking of the envelope on the object, thus inducing a risk unacceptable rupture. To avoid this inconvenience, it is interesting to predict that the main portion of the sleeve also has a reinforcing strip. Such a variant is illustrated in Figures 12 to 14.

L'enveloppe illustrée sur les figures 12 à 14 diffère seulement de l'enveloppe des figures 1 à 6 par la présence d'une bande de renfort 107 que présente la portion principale 101 du manchon, cette bande de renfort 107 étant disposée de telle façon que la ou chaque bande de renfort 106 du rabat complémentaire 103 se superpose à celle-ci. On obtient ainsi un renfort supplémentaire lors de la formation de la ou des découpes 110 effectuées sur l'enveloppe déjà mise en forme. On a illustré ici une bande de renfort 107 disposée contre la paroi intérieure de la portion principale 101, mais il va de soi que l'on pourra prévoir aussi un agencement sur la paroi extérieure. En outre, si la bande de renfort 106 est réalisée sous la forme de tronçons disjoints, on pourra prévoir également une réalisation en tronçons séparés pour la deuxième bande de renfort 107, dans la mesure naturellement où chacun de ces tronçons viendrait en recouvrement des tronçons 106 afin d'assurer la fonction de renforcement précitée. The envelope illustrated in Figures 12 to 14 differs only from the envelope of FIGS. 1 to 6 by the presence of a reinforcing strip 107 which the portion has main 101 of the sleeve, this reinforcing strip 107 being arranged in such a way that the or each reinforcing strip 106 of the complementary flap 103 is superimposed thereon. We thus obtains additional reinforcement during training of the cutout (s) 110 made on the envelope already formatted. We have illustrated here a reinforcement strip 107 arranged against the inner wall of the portion main 101, but it goes without saying that we can predict also an arrangement on the outer wall. Furthermore, if the reinforcing strip 106 is produced in the form of disjoint sections, provision may also be made for realization in separate sections for the second strip of reinforcement 107, since naturally each of these sections would overlap sections 106 so perform the aforementioned reinforcement function.

Dans tous les cas, il sera avantageux de prévoir que la ou les bandes de renfort 106,107 seront réalisées en matière plastique à partir d'un film mono-orienté selon une direction déterminée, cette ou ces bandes de renfort étant alors obtenues de telle façon que leur direction longitudinale soit parallèle à cette direction prédéterminée.In all cases, it will be advantageous to plan that the reinforcement strip (s) 106,107 will be made in plastic material from a mono-oriented film according to a determined direction, this or these reinforcing bands being then obtained in such a way that their longitudinal direction is parallel to this predetermined direction.

On évite ainsi toute rétraction transversale de la ou des bandes de renfort lors de la thermorétraction de l'enveloppe. A titre indicatif, les bandes de renfort 106,107 pourront être réalisées en polyéthylène, polypropylène, ou polyéthylène téréphtalate.This avoids any transverse retraction of the reinforcement strip (s) during the heat shrinkage of the envelope. As an indication, the reinforcement strips 106,107 can be made of polyethylene, polypropylene, or polyethylene terephthalate.

En outre, le film constitutif du manchon sera de préférence mono-orienté, selon une direction longitudinale ou transversale, et la ou chaque bande de renfort 106 s'étendra alors respectivement circonférentiellement ou axialement. On utilise ainsi de façon élégante l'allongement de la chaíne moléculaire du film résultant de la mono-orientation pour faciliter la déchirure qui s'effectue dans la direction d'orientation du film, de sorte que la formation d'un ou plusieurs volets en est facilitée. Par contre, la bande de renfort conserve quant à elle toute sa rigidité.In addition, the film constituting the sleeve will be preferably mono-oriented, in a longitudinal direction or transverse, and the or each reinforcing strip 106 will then extend circumferentially or axially. We thus use in an elegant way the elongation of the molecular chain of the film resulting from the mono-orientation to facilitate the tearing which takes place in direction of film orientation, so the training of one or more components is facilitated. On the other hand, the reinforcement strip retains all its rigidity.

Par ailleurs, le ou chaque volet 115 pourra être imprimé au recto et/ou au verso. Dans le cas de plusieurs volets adjacents, il va de soi que l'on pourra prévoir des volets de tailles identiques ou différentes, ce qui permet d'organiser avec une grande liberté un système de couponnage.Furthermore, the or each flap 115 may be printed on the front and / or back. In the case of several adjacent shutters, it goes without saying that we can provide identical or different sizes, allowing to organize with great freedom a couponing system.

L'invention s'applique non seulement à l'emballage d'un objet unique, comme cela vient d'être décrit, mais aussi pour l'emballage d'un groupe d'objets au moyen d'un manchon à plusieurs compartiments, en particulier un manchon réalisé conformément au document FR-A-2 637 866 de la demanderesse. Ce document décrit un certain nombre de manchons à plusieurs compartiments, et en particulier, un manchon du type illustré aux figures 15 à 18 pour l'organisation de ces deux compartiments.The invention applies not only to packaging of a single object, as just described, but also for packaging a group of objects using a sleeve with several compartments, in particular a sleeve produced in accordance with document FR-A-2 637 866 of the plaintiff. This document describes a number of sleeves with several compartments, and in particular a sleeve of the type illustrated in FIGS. 15 to 18 for organization of these two compartments.

Les figures 15 à 18 illustrent ainsi une enveloppe 200 conforme à l'invention, servant à emballer un groupe de deux contenants 11, 12. Pour alléger la description, les parties identiques ou homologues de l'enveloppe 100 précédemment décrite seront affectés des mêmes références augmentées de cent, et ne feront pas l'objet d'une nouvelle description.Figures 15 to 18 thus illustrate an envelope 200 according to the invention, used to package a group of two containers 11, 12. To simplify the description, identical or homologous parts of the envelope 100 previously described will be given the same references increased by one hundred, and will not be subject to new description.

S'agissant d'un manchon à deux compartiments, il est prévu une deuxième ligne de soudure 208, agencée à distance de la première ligne de soudure 202, de façon à définir une membrane intermédiaire 209. La ligne 208 est naturellement parallèle à la ligne 202, et les figures 16 et 17 permettent de mieux appréhender la forme prise par cette enveloppe 200, respectivement déposée et rétractée sur les deux objets 11, 12, et avant d'être enfilée sur ces deux objets. La vue développée de la figure 18 permet ainsi de mieux distinguer les zones B, B' associées à la conformation de la deuxième ligne de soudure 208. On retrouve par ailleurs les zones A,A' associées à la première ligne de soudure 202, et les zones C,C' associées à la ligne de soudure 205, comme pour le manchon précédent enveloppant un objet unique. Pour le reste, l'organisation du rabat complémentaire 203, avec sa ligne de piqûres 204 et sa bande de renfort 206, et avec sa ou ses languettes 214 résultant de découpe(s) 210 au niveau de cette bande de renfort 206. Comme précédemment, on peut ainsi former une pluralité (ici deux) de volets ou coupons 215 détachables par déchirure (ici selon une direction circonférentielle) par traction exercée sur la languette 214 concernée.Being a sleeve with two compartments, it a second weld line 208 is provided, arranged at distance from the first weld line 202, so that define an intermediate membrane 209. Line 208 is naturally parallel to line 202, and Figures 16 and 17 allow a better understanding of the form taken by this envelope 200, respectively deposited and retracted on the two objects 11, 12, and before being strung on these two objects. The developed view of Figure 18 thus allows to better distinguish the zones B, B 'associated with the conformation of the second weld line 208. We find by elsewhere zones A, A 'associated with the first line of weld 202, and zones C, C 'associated with the line of welding 205, as for the previous sleeve wrapping a unique object. For the rest, the organization of the flap complementary 203, with its line of bites 204 and its reinforcement strip 206, and with its tab (s) 214 resulting from cutout (s) 210 at this strip of reinforcement 206. As before, it is thus possible to form a plurality (here two) of detachable flaps or coupons 215 by tearing (here in a circumferential direction) by traction exerted on the tongue 214 concerned.

Il va de soi que les différentes variantes précédemment décrites en référence aux figures 7 à 14 sont transposables pour les enveloppes à plusieurs compartiments, et en particulier, pour l'enveloppe à deux compartiments des figures 15 à 18.It goes without saying that the different variants previously described with reference to FIGS. 7 to 14 are transferable for multi-compartment envelopes, and in particular, for the envelope with two compartments Figures 15 to 18.

On est ainsi parvenu à réaliser une enveloppe dont le rabat complémentaire peut générer un ou plusieurs volets ou coupons qui sont détachables grâce à une traction exercée sur une languette associée qui est à la fois rigide et permanente, et avec un effort minimal. Les multiples choix pour l'agencement et le dimensionnement des découpes génératrices de languettes permettent de s'adapter à de nombreuses situations différentes selon les besoins.We managed to make an envelope the complementary flap of which can generate one or more flaps or coupons which are detachable by traction exerted on an associated tongue which is both rigid and permanent, and with minimal effort. The multiples choice for arrangement and sizing of cutouts tab generators make it possible to adapt to many different situations as needed.

Claims (15)

  1. An envelope (100; 200) for wrapping at least one article, the envelope being of the type constituted by a sleeve of heat-shrink plastics material suitable for having a main portion (101; 201) for closely surrounding at least a portion of a single article if there is only one article, or of a group of articles if there is a plurality of articles, said sleeve also having an additional flap (103; 203) extending externally by superposition and being connected at its ends to the main portion of the sleeve via two parallel lines of heat sealing (102, 105; 202, 205), the envelope being characterized in that the additional flap (103; 203) has at least one reinforcing strip (106; 206) fitted thereto in which at least one cutout (110; 210) is formed to define the outline of a pull tongue (114; 214) whose sides extend substantially perpendicularly to the direction of the reinforcing strip (106; 206), the or each cutout (110; 210) extending beyond said reinforcing strip in the form of two slots (113; 213) formed through the wall of the flap and forming tear starters, said flap also having a line of perforations or the like (104; 204) extending in a direction substantially parallel to the direction of the reinforcing strip (106; 206) and at a distance therefrom, to make it possible to detach the panel (115; 215) that is obtained by tearing the corresponding portion of said flap by pulling on the associated tongue (114; 214).
  2. An envelope according to claim 1, characterized in that the or each reinforcing strip (106; 206) extends along a generator line of the sleeve.
  3. An envelope according to claim 2, characterized in that the or each reinforcing strip (106; 206) is placed in the vicinity of one of the two lines of heat sealing (102, 105; 202, 205) connecting the additional flap (103; 203) to the main portion (101; 201) of the sleeve.
  4. An envelope according to claim 2 or 3, characterized in that the reinforcing strip (106; 206) is a single strip and extends over the entire height of the sleeve, as does the line of perforations or the like (104; 204).
  5. An envelope according to claim 1, characterized in that the or each reinforcing strip (106) extends along a circumferential direction of the sleeve.
  6. An envelope according to claim 5, characterized in that the or each reinforcing strip (106) is placed in the vicinity of the top edge or the bottom edge of the sleeve.
  7. An envelope according to claim 5 or 6, characterized in that there is a single reinforcing strip (106) which extends along the available length of the additional flap (103) between the two lines of heat sealing (102, 105) connecting said flap to the main portion (101) of the sleeve, as does the line of perforations or the like (104).
  8. An envelope according to any one of claims 1 to 7, characterized in that the or each reinforcing strip (106; 206) is placed against the inside face of the additional flap (103; 203).
  9. An envelope according to claim 8, characterized in that the or each tongue (114; 214) is printed on its outside face.
  10. An envelope according to any one of claims 1 to 9, characterized in that the additional flap (103) has lines of microperforations (116) connecting each of the extension slots (113) to the line of perforations or the like (104), in particular when the film constituting the sleeve is thick.
  11. An envelope according to any one of claims 1 to 10, characterized in that the or each panel (115; 215) is printed recto and/or verso.
  12. An envelope according to any one of claims 1 to 11, characterized in that a plurality of adjacent panels (115; 215) are provided, of sizes that are identical or different.
  13. An envelope according to any one of claims 1 to 12, characterized in that the film constituting the sleeve is mono-oriented, in a longitudinal direction or in a transverse direction, and the or each reinforcing strip (106; 206) then extends respectively circumferentially or axially.
  14. An envelope according to any one of claims 1 to 13, characterized in that the main portion (101) of the sleeve also has at least one reinforcing strip (107) disposed in such a manner that the or each reinforcing strip (106) of the additional flap (103) is superposed thereover to provide additional reinforcement when the cutout(s) (110) is/are formed on the envelope after it has been put into shape.
  15. An envelope according to any one of claims 1 to 14, characterized in that the or each reinforcing strip (106, 107; 206) is made of plastics material from a film that is mono-oriented in a determined direction, said reinforcing strip(s) being obtained in such a manner that the longitudinal direction of the strip(s) is parallel to said determined direction.
EP19960402484 1995-11-27 1996-11-19 Envelope consisting of a heat shrinkable plastic sleeve for packaging at least one object Expired - Lifetime EP0775643B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9514015A FR2741604B1 (en) 1995-11-27 1995-11-27 ENVELOPE FOR PACKAGING AT LEAST ONE OBJECT, OF THE TYPE CONSISTING OF A SLEEVE OF HEAT-SHRINKABLE PLASTIC MATERIAL
FR9514015 1995-11-27

Publications (2)

Publication Number Publication Date
EP0775643A1 EP0775643A1 (en) 1997-05-28
EP0775643B1 true EP0775643B1 (en) 2000-02-02

Family

ID=9484914

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960402484 Expired - Lifetime EP0775643B1 (en) 1995-11-27 1996-11-19 Envelope consisting of a heat shrinkable plastic sleeve for packaging at least one object

Country Status (6)

Country Link
EP (1) EP0775643B1 (en)
DE (1) DE69606500T2 (en)
ES (1) ES2143735T3 (en)
FR (1) FR2741604B1 (en)
GR (1) GR3033174T3 (en)
PT (1) PT775643E (en)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN105050910A (en) * 2013-03-19 2015-11-11 施利福国际公司 Safety envelope capable of providing protection against opening of receptacles, object covered with an envelope of this type and method for affixing information on an envelope of this type

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US5669112A (en) * 1996-02-06 1997-09-23 Huang; Fu-Chuan Package film device
GB2315256A (en) * 1996-07-16 1998-01-28 Andrew William Wilkey Label with releasable flap
CA2274141C (en) * 1996-12-10 2004-03-02 Sleever International Company Sleeve-type envelope of heat-shrinkable plastic material for packaging at least one item
FR2804660B1 (en) * 2000-02-08 2002-04-19 Sleever Int OBJECT ASSEMBLY PLUGGABLE ONTO A PACKAGE TO BE ASSOCIATED THEREWITH LATCHING
FR2810967B1 (en) 2000-06-30 2005-08-05 Sleever Int ENVELOPE FOR THE PACKAGING OF AT LEAST ONE OBJECT, OF THE TYPE CONSISTING OF A SLEEVE OF PLASTIC THERMORETRACTABLE MATERIAL
ITMI20011165A1 (en) * 2001-05-31 2002-12-01 Pilot Italia LABEL PRESENTING THERMAL INSULATION FEATURES, PARTICULARLY DESIGNED FOR SELF-HEATING OR SELF-REFRIGERATING CONTAINERS OF B
WO2002098742A2 (en) * 2001-06-01 2002-12-12 Interactive Packaging Group, Ltd. Method, machine and object for placement of multiple labels
FR2859462B1 (en) * 2003-09-05 2006-07-07 Autobar Flexible Packaging DEVICE FOR PACKAGING AT LEAST TWO TYPES DIFFERENT FROM PRODUCTS
US20080308430A1 (en) * 2004-12-06 2008-12-18 Modern Media Concepts Pty Ltd Packaging for a Disposable Item
FR2892392B1 (en) 2005-10-25 2007-12-28 Sleever Internat Company Sa ENVELOPE FOR THE PACKAGING OF AT LEAST ONE OBJECT, OF THE TYPE CONSISTING OF A SLEEVE OF PLASTIC THERMORETRACTABLE MATERIAL
ITUA20163778A1 (en) * 2016-05-25 2017-11-25 Stefano Pantani A label preferably for bottles of alcohol

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US1686354A (en) 1927-03-24 1928-10-02 Certo Corp Merchandise package
US4318235A (en) * 1980-06-09 1982-03-09 The Nestle Co., Inc. Label and labelled article
FR2637866B1 (en) 1988-10-19 1991-03-29 Sleever Int METHOD FOR PACKAGING OBJECTS UNDER MULTI-COMPARTMENT HEAT-SHRINKABLE PLASTIC SHEATH
US5007578A (en) 1990-08-06 1991-04-16 Simone Ronald A Wrap-around body with promotional flap extension
FR2698851B1 (en) * 1992-12-07 1995-01-06 Sleever Int Envelope for packaging a container.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105050910A (en) * 2013-03-19 2015-11-11 施利福国际公司 Safety envelope capable of providing protection against opening of receptacles, object covered with an envelope of this type and method for affixing information on an envelope of this type

Also Published As

Publication number Publication date
DE69606500T2 (en) 2000-08-24
FR2741604A1 (en) 1997-05-30
PT775643E (en) 2000-07-31
ES2143735T3 (en) 2000-05-16
GR3033174T3 (en) 2000-08-31
DE69606500D1 (en) 2000-03-09
FR2741604B1 (en) 1998-01-02
EP0775643A1 (en) 1997-05-28

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