EP0775643A1 - 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
EP0775643A1
EP0775643A1 EP96402484A EP96402484A EP0775643A1 EP 0775643 A1 EP0775643 A1 EP 0775643A1 EP 96402484 A EP96402484 A EP 96402484A EP 96402484 A EP96402484 A EP 96402484A EP 0775643 A1 EP0775643 A1 EP 0775643A1
Authority
EP
European Patent Office
Prior art keywords
flap
sleeve
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.)
Granted
Application number
EP96402484A
Other languages
German (de)
French (fr)
Other versions
EP0775643B1 (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
Original Assignee
Sleever International Co SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sleever International Co SA filed Critical Sleever International Co SA
Publication of EP0775643A1 publication Critical patent/EP0775643A1/en
Application granted granted Critical
Publication of EP0775643B1 publication Critical patent/EP0775643B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 in particular the packaging of consumer products such as food, chemical, cosmetic, or pharmaceutical products, which generally require information from the consumer or the user, or else other purely commercial information.
  • the invention relates to an envelope intended for the packaging of at least one object such as a container, which packaging is of the type constituted by a sleeve made of heat-shrinkable plastic capable of closely surrounding at least part of the object, and further comprising a complementary flap extending externally by superposition, being connected at its lateral ends to the main portion of the sleeve by two parallel weld lines.
  • a sleeve of heat-shrinkable plastic is generally used to form an information carrier and / or to ensure the relative immobilization of the opening and closing means (when the object is a container).
  • the complementary flap is in principle intended to be removable, and it is then used to deliver additional specific information which is present on the flap itself, or else on an explanatory note placed in the pocket that forms the flap with the main portion of the muff.
  • tearing means such as lateral punctures, arranged in two lines parallel to the generatrices of the sleeve nearby of its two lateral ends. These tearing means must allow easy detachment of the additional flap, 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 in place of the tear-off means, but it appears that such use of adhesive means is difficult in practice.
  • the envelope illustrated in the aforementioned document is also suitable only for removing the complementary flap in its entirety, and not for only a part of it.
  • the invention aims to improve the envelopes of the type described in document FR-A-2 698 851, by designing an arrangement of the complementary flap which allows easy detachment of one or more parts of this flap without cause damage to the sleeve while resisting shrinking forces.
  • the object of the invention is also to design an envelope which can be used not only for packaging a single object, but also for packaging 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 of the applicant.
  • an envelope intended for the packaging of at least one object, of the type consisting of a sleeve of heat-shrinkable plastic material capable of closely surrounding by a main portion at least a part of the object in the event single object, or group of objects in case of multiple objects, said sleeve further comprising a complementary flap extending externally by superposition being connected at its lateral ends to the main portion of the sleeve by two parallel weld lines, characterized in that the complementary flap has at least one added reinforcing strip in which is made at least one cut defining the outline of a gripping tab whose lateral edges extend substantially perpendicular to the direction of the reinforcing strip, the or each cut extending beyond said strip by two slots made in the wall of the rab at and forming tear initiators, said flap further having a line of stitching or the like extending in a direction substantially parallel to the direction of the reinforcing strip and at a distance therefrom, to enable the flap obtained to be detached tearing of the relevant portion
  • the cut tongue end thus has all the required qualities of rigidity and permanence after shrinking.
  • 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 reinforcing strip can be unique, extending over the entire height of the sleeve, just like the line of pits or the like, or even be produced in the form of disjoint sections aligned on the same generator of the sleeve.
  • the or each reinforcing strip may extend in a circumferential direction of the sleeve, for example being arranged in the vicinity of the upper edge or the lower edge of said sleeve.
  • the reinforcing strip may 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 then the line of stitching or the like, or else be arranged in several separate strip sections and aligned on the same circumferential line of the sleeve.
  • the or each reinforcing strip will be placed against the internal face of the complementary flap.
  • the arrangement of the reinforcing strip against the internal face of the flap makes it possible to provide for an impression of the or each tab on the external face of that -this.
  • the pulling of the or each tongue makes it possible to detach one or more flaps obtained by tearing of the portion concerned of the complementary flap, this tear being able to be organized in an axial or circumferential direction.
  • the thickness of the film constituting the sleeve is large (for example exceeding 100 ⁇ m)
  • the complementary flap has lines of micro-perforations connecting each extension slot to the line of stitching or the like.
  • the or each component can be printed on the front and / or back. It will naturally be possible to provide, for the same complementary flap, several adjacent flaps, of identical or different sizes.
  • the film constituting the sleeve will be mono-oriented, in a longitudinal or transverse direction, and the or each reinforcing strip will then extend respectively circumferentially or axially.
  • This mono-orientation participates in the ability of the film to tear in the intended direction, which corresponds to the progressive tearing of the complementary flap due to traction exerted on the associated tongue, this ability resulting from the elongation of the chain. molecular of the material of the film during the stretching operation.
  • the cut made in the wall of the complementary flap, at the level of the reinforcement strip, with the two extensions in the form of slots extending beyond said reinforcement strip, will preferably be carried out flat, that is to say -to say before shaping of the envelope to conform it into a sleeve, and organization of the two weld lines securing the complementary flap to the main portion of the envelope.
  • the main portion of the sleeve also has at least one reinforcing strip arranged in such a way that the or each reinforcing strip of the complementary flap is superimposed on the latter. , to provide additional reinforcement during the formation of the cut or cuts made on the envelope already shaped.
  • the reinforcement strip (s) are made of plastic, from a film oriented in one direction, said reinforcement strip (s) being obtained in such a way that their longitudinal direction is parallel to this direction determined. This avoids any undesirable transverse retraction of one or the other of the reinforcing bands.
  • FIG. 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 cap 3, and the packaging envelope 100 tightly surrounds the body of this container as a result of 'a heat shrink on it.
  • a container is of course given by way of example, in order to illustrate a particular case of an object packaged using an envelope in accordance with the invention.
  • the envelope 100 is constituted by a sleeve made of heat-shrinkable plastic, and comprises a main portion 101 closely surrounding the body of the container 1, as well as a complementary flap 103 extending externally by superposition being connected by its two lateral ends to the main portion 101 of the sleeve, by two parallel weld lines 102 and 105.
  • the complementary flap 103 defines with the main portion 101 of the sleeve a pocket in which a notice is inserted 10.
  • the envelope 100 thus has 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 s 'also extends along a generator of the cylinder.
  • a gripping tab formed by means of a particular cutout, and which allows the formation by tearing of a flap, until reaching a line of punctures or the like allowing the final separation of the torn flap.
  • the complementary flap 103 has an added reinforcement strip 106, in which a cutout 110 is formed defining the outline of a gripping tongue 114 whose lateral edges extend substantially. perpendicular to the direction of the reinforcement strip 106.
  • the detail in FIG. 2 makes it possible to better distinguish the arrangement of this cutout 110.
  • the cutout 110 crossing the wall of the flap and the reinforcement strip 106 which is associated with it thus comprises a main section 111 extending in the direction of the reinforcing strip 106 and then two lateral sections 112 extending from the ends of this central section 111, these lateral sections further extending at the level of the reinforcing strip 106.
  • the lateral sections 112 shown here are perpendicular to the central section 111. However, an angle less than or greater than 90 ° may be provided, as shown schematically in Figure 2 by the angular range noted ⁇ . In practice, the sections 111, 112 will form between them an angle ranging from 80 ° to 120 °. This is to make it clear that the expression “substantially perpendicularly "used above must in no case be understood in a restrictive sense, but on the contrary this expression encompasses a certain angular range on either side of what can be considered as a general direction.
  • 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 cutout portion of the reinforcing strip 106, which makes it possible to guarantee the necessary qualities of rigidity and permanence before and after retraction of this gripping tab.
  • the two slots 113 made in the wall of the flap 103, beyond the reinforcing strip 106, thus form tear initiators.
  • the complementary flap 103 also has a line of pits or the like 104 extending in a direction substantially parallel to the direction of the reinforcing strip 106 and at a distance therefrom.
  • FIG. 5 thus makes it possible to distinguish this envelope 100, with its two weld lines 102, 105 and its line of pits or the like 104 made in the complementary flap 103.
  • the reinforcing strip 106 is here arranged against the internal face of the complementary flap 103, which is interesting, but in no way obligatory. It has been noted d the width of the cut (in a circumferential direction), part of which d1 extends in the width of the reinforcing strip 106, and another part d2 extends in the wall of the flap 103 beyond the reinforcing strip 106 (this part d2 corresponds to the above-mentioned extension slots 113).
  • FIG. 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 weld line 102, and its two zones, denoted C, C ′ associated with the weld line 105.
  • a complementary flap 103 is also distinguished, connected to the main portion 101 of the envelope by the stitching line 104, which complementary flap has a terminal zone C 'associated with the aforementioned zone C to form the weld line 105.
  • the 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.
  • a reinforcement strip 106 is also distinguished, in which the cutout 110 is made, which is extended at its two ends by the two slots 113 relating to the single wall of the raba t complementary 103, therefore beyond the reinforcing strip 106.
  • the zones A ′ and C ′ are represented with simple hatching to indicate that these zones are on the interior face of the wall, while the zones A and C are shown with cross-hatching to indicate that these zones are behind the wall of the envelope and therefore seen through transparency.
  • the reinforcing strip at another location of the complementary flap, and possibly in another direction. It is also possible to provide a reinforcing strip produced in disjoint sections. As regards the cutting, this can be of various shapes and dimensions; it can be multiple or organized in successive cuts, to have a plurality of tabs making it possible to generate as many flaps or detachable coupons.
  • FIGS. 7 to 11 Some of these variants are illustrated in FIGS. 7 to 11, in which the same references have been kept for the homologous elements, so that the description of these figures will be made more quickly.
  • FIG. 7 illustrates a variant in which the positions of the reinforcing strip 106 and of the stitching line or the like 104 have been reversed compared to the previous variant.
  • the tongue 114 resulting from the cut made at the level of the reinforcing strip 106 is arranged in such a way that the formation of the flap by tearing of the zone concerned of the complementary flap 103 is carried out from left to right, that is to say in a direction opposite to that of the previous variant.
  • the reinforcing strip 106 is arranged on the internal face of the complementary flap 103, which in particular makes it possible to print the tongue 114 on its external face, as has been shown diagrammatically in the figure. 7.
  • the strip 106 is constituted by several disjoint sections, here two in number, these sections preferably being aligned along the same generatrix of the section.
  • Each of these sections has a cut 110 of the same type as the cut of the previous variant, except that it relates to a height possibly weaker of the sleeve, so that there are two gripping tabs 114.
  • Each tab 114 makes it possible to generate a flap or coupon 115 by tearing the wall of the complementary flap 103, this tearing being naturally initiated by the slots of extension of each of the cutouts 110, these slots themselves extending by the lines illustrated in phantom 116 corresponding to the tearing of the wall of the flap for each of the two flaps 115.
  • FIG. 9 illustrates another variant differing from the previous variant in that the reinforcement strip 106 (again unique) now has a multiple cutout 110 making it possible to generate three tongues 114 which are directly contiguous with each other.
  • the three flaps or coupons 115 which can be obtained by pulling on the respective tabs 114, with corresponding tearing in the wall of the complementary flap 103, are directly adjacent, that is to say that certain lines 116 may be common to two adjacent shutters.
  • FIG. 10 illustrates another variant in which the reinforcing strip 106 no longer extends along a generatrix of the sleeve, but in a circumferential direction of said sleeve.
  • This reinforcing strip 106 here unique, can naturally be arranged in successive sections arranged along a circumferential line.
  • At least one cutout 110 is then provided (here three contiguous cutouts forming a triple cutout) making it possible to generate one or more flaps 115 obtained by tearing the wall of the complementary flap 103, this tearing then taking place along lines 116 which are now arranged along generatrices of the sleeve, the line of punctures 104 being of course arranged accordingly, that is to say here in a circumferential direction.
  • FIG. 11 makes it possible to better distinguish the arrangement of the envelope of FIG. 10, with its reinforcing strip 106 disposed along the length of the envelope flat, the line of stitching 104 being parallel to this reinforcement strip 106, and disposed at the opposite edge of the portion of the envelope corresponding to the complementary flap 103.
  • this strip When using a single reinforcing strip which extends along a generatrix of the sleeve, this strip will preferably extend over the entire height of the sleeve, like the line of stitching or the like, which considerably simplifies manufacture. Indeed, a continuous film is then used coated with an unwound ribbon corresponding to the reinforcing strip, this film being cut transversely into sections corresponding to the desired height of the sleeve.
  • this reinforcement strip when using a single reinforcement strip which extends in a circumferential direction of the sleeve, this reinforcement strip will preferably extend over the available length of the complementary flap between the two weld lines connecting the said weld flap at the main portion of the sleeve, as is the line of stings or the like.
  • the cut or cuts can be made either on the flat envelope, or once this envelope is already shaped, that is to say after completion of the two parallel weld lines.
  • the realization of the cutout (s) on the flat envelope does not pose any particular difficulty.
  • it is advantageous to provide that the main portion of the sleeve also has a reinforcing strip. Such a variant is illustrated in FIGS. 12 to 14.
  • the envelope illustrated in FIGS. 12 to 14 differs only from the envelope of FIGS. 1 to 6 by the presence of a reinforcing strip 107 which has the main portion 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 on the latter.
  • An additional reinforcement is thus obtained during the formation of the cutout (s) 110 made on the envelope already shaped.
  • Illustrated here is a reinforcing strip 107 disposed against the inner wall of the main portion 101, but it goes without saying that one can also provide an arrangement on the outer wall.
  • reinforcing strip 106 is produced in the form of disjointed sections, provision may also be made for separate sections for the second reinforcing strip 107, since naturally each of these sections would overlap the sections 106 in order to perform the aforementioned reinforcing function.
  • the reinforcement strip (s) 106, 107 will be made of plastic material from a mono-oriented film in a determined direction, this or these reinforcement strip (s) then being obtained in such a way that their longitudinal direction is parallel to this predetermined direction.
  • the reinforcement strips 106, 107 may be made of polyethylene, polypropylene, or polyethylene terephthalate.
  • constituent film of the sleeve will preferably be mono-oriented, in a longitudinal or transverse direction, and the or each reinforcing strip 106 will then extend respectively circumferentially or axially.
  • the elongation of the molecular chain of the film resulting from the mono-orientation is thus elegantly used to facilitate the tearing which takes place in the direction of orientation of the film, so that the formation of one or more flaps in is made easier.
  • the reinforcing strip retains all its rigidity.
  • each flap 115 may be printed on the front and / or on the back.
  • the invention applies not only to the packaging of a single object, as has just been described, but also to the packaging of a group of objects by means of a sleeve with several compartments, in in particular a sleeve produced in accordance with document FR-A-2 637 866 of the applicant.
  • 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 the 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.
  • the identical or homologous parts of the envelope 100 previously described will be given the same references increased by one hundred, and will not be described again.
  • a second weld line 208 is provided, arranged at a distance from the first weld line 202, so as to define an intermediate membrane 209.
  • the line 208 is naturally parallel to the line 202, and FIGS. 16 and 17 allow a better understanding of the shape taken by this envelope 200, respectively deposited and retracted on the two objects 11, 12, and before being put on these two objects.
  • the developed view of FIG. 18 thus makes it possible to better distinguish the zones B, B 'associated with the conformation of the second weld line 208.

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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)

Abstract

The packaging (100) for an object consists of a thermo-retractable sleeve, a main portion (101) of which tightly surrounds a part of the object. The sleeve has a complementary superposed external flap (103) which is connected at its side ends to the sleeve main portion by two parallel weld lines (102,105). The complementary flap has a reinforcing band (106) in which there is a cut out (110) defining a gripping tab (114) whose sides extend perpendicularly to the reinforcing band. The cut out is extended beyond the band by two slits in the flap wall which form a start for tearing. The flap also as a perforated line (104) parallel to the reinforcing band which enables detaching the flap part obtained by tearing the external flap when the tab is pulled.

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 in particular the packaging of consumer products such as food, chemical, cosmetic, or pharmaceutical products, which generally require information from the consumer or the user, or else 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 an envelope intended for the packaging of at least one object such as a container, which packaging is of the type constituted by a sleeve made of heat-shrinkable plastic capable of closely surrounding at least part of the object, and further comprising a complementary flap extending externally by superposition, being connected at its lateral ends to the main portion of the sleeve by two parallel weld lines. Such a sleeve of heat-shrinkable plastic is generally used to form an information carrier and / or to ensure the relative immobilization of the opening and closing means (when the object is a container). The complementary flap is in principle intended to be removable, and it is then used to deliver additional specific information which is present on the flap itself, or else on an explanatory note placed in the pocket that forms 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 document FR-A-2 698 851 of the applicant. In this known envelope, the complementary flap is in one piece with the sleeve, and it is connected to the sleeve proper by two parallel weld lines which extend along generatrices of the sleeve, these weld lines defining the length of said Rabat.

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 apparaît qu'une telle utilisation de moyens adhésifs est délicate dans la pratique.The aforementioned document provides for tearing means such as lateral punctures, arranged in two lines parallel to the generatrices of the sleeve nearby of its two lateral ends. These tearing means must allow easy detachment of the additional flap, 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 in place of the tear-off means, but it appears that such use of adhesive means is difficult in practice.

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 aforementioned document is also suitable only for removing the complementary flap in its entirety, and not for only a part 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 clearly illustrates the state of the art concerning the use of an envelope of heat-shrinkable plastic material with an 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 a complementary flap forming an extension of an object packaging envelope, and this is particularly the case when we wish to organize a couponing system, according to which a or several coupons can be detached from the envelope, for example by using immediate reimbursement coupons or reduction 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 complementary flap ending in a gripping tab serving to break the bonding points arranged on the height of the free end edge of the flap, in order to finally detach the entire flap by means of a line of perforations provided at the other end of said flap. However, this technique is only suitable for envelopes made of reinforced paper or cardboard, and its teaching cannot be used for envelopes made from a film of heat-shrinkable plastic. Indeed, if we were considering using the same envelope structure with a heat-shrinkable plastic, we would come up against a double difficulty: first, we would have to organize suitable welding at the free edge of the complementary flap (capable of resist the tensile forces encountered during the retraction), and then the gripping tab should be provided very thick to on the one hand, break the weld line, and on the other hand, have sufficient rigidity to resist deformation when passing the envelope to the oven to retract 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 precut for detaching a rectangular central panel. In addition to the fact that the cylindrical envelope formed by the label does not have a flap, the teaching of this document is unusable for the production of an envelope made of heat-shrinkable plastic material, since the pre-cut concerned would not resist the forces of retraction .

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 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 entraîner de détérioration pour le manchon, tout en résistant aux forces de rétraction.The invention aims to improve the envelopes of the type described in document FR-A-2 698 851, by designing an arrangement of the complementary flap which allows easy detachment of one or more parts of this flap without cause damage to the sleeve while resisting shrinking forces.

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 an envelope which can be used not only for packaging a single object, but also for packaging 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 of 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 of heat-shrinkable plastic material capable of closely surrounding by a main portion at least a part of the object in the event single object, or group of objects in case of multiple objects, said sleeve further comprising a complementary flap extending externally by superposition being connected at its lateral ends to the main portion of the sleeve by two parallel weld lines, characterized in that the complementary flap has at least one added reinforcing strip in which is made at least one cut defining the outline of a gripping tab whose lateral edges extend substantially perpendicular to the direction of the reinforcing strip, the or each cut extending beyond said strip by two slots made in the wall of the rab at and forming tear initiators, said flap further having a line of stitching or the like extending in a direction substantially parallel to the direction of the reinforcing strip and at a distance therefrom, to enable the flap obtained to be detached tearing of the relevant portion of said flap produced by pulling the associated tab.

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 reinforcing strip, the cut tongue end thus has all the required qualities of rigidity and permanence after shrinking. In addition, it becomes possible to organize with great freedom the positioning and the shape of the cutout, and, to also provide for a multiple cutout or several separate cutouts generating a plurality of tabs which each make it possible 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.According to 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 reinforcing strip can be unique, extending over the entire height of the sleeve, just like the line of pits or the like, or even be produced in the form of disjoint sections 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 reinforcing strip may extend in a circumferential direction of the sleeve, for example being arranged in the vicinity of the upper edge or the lower edge of said sleeve. Here again, the reinforcing strip may 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 then the line of stitching or the like, or else be arranged in several separate strip sections 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 placed against the internal face of the complementary flap. In addition to discretion in the case where the reinforcing strip is colored and the film of the flap transparent, the arrangement of the reinforcing strip against the internal face of the flap makes it possible to provide for an impression of the or each tab on the external face of that -this.

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 has been said above, the pulling of the or each tongue makes it possible to detach one or more flaps obtained by tearing of the portion concerned of the complementary flap, this tear being able to be organized in an axial or circumferential direction. However, especially when the thickness of the film constituting the sleeve is large (for example exceeding 100 μm), it may be advantageous to provide a assistance in tearing the wall of the complementary flap, so that the opening of the flap occurs homogeneously. To this end, it may be advantageous to provide that the complementary flap has lines of micro-perforations connecting each extension slot to the line of stitching 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 component can be printed on the front and / or back. It will naturally be possible to provide, for the same complementary flap, several adjacent flaps, of 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 chaîne 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 or transverse direction, and the or each reinforcing strip will then extend respectively circumferentially or axially. This mono-orientation participates in the ability of the film to tear in the intended direction, which corresponds to the progressive tearing of the complementary flap due to traction exerted on the associated tongue, this ability resulting from the elongation of the chain. molecular of the material of the film during the stretching operation.

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 made in the wall of the complementary flap, at the level of the reinforcement strip, with the two extensions in the form of slots extending beyond said reinforcement strip, will preferably be carried out flat, that is to say -to say before shaping of the envelope to conform it into a sleeve, and organization of the two weld lines securing the complementary flap to the main portion of the envelope. However, it may prove to be advantageous to make the cut (s) once the envelope has already been shaped. In this case, however, the cut performed risks weakening the area of the main portion of the sleeve which is opposite the cut area of the complementary flap. It is in this case advantageous to provide a local reinforcement of the portion principal of the envelope, in order to be able to use an anvil with a knife whose blade has the desired cutting profile, forming a specific tool which is a function of the need concerned. According to another characteristic of the invention, it is then provided that the main portion of the sleeve also has at least one reinforcing strip arranged in such a way that the or each reinforcing strip of the complementary flap is superimposed on the latter. , to provide additional reinforcement during the formation of the cut or cuts made on the envelope already shaped.

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 oriented in one direction, said reinforcement strip (s) being obtained in such a way that their longitudinal direction is parallel to this direction determined. This avoids any undesirable transverse retraction of one or the other of the reinforcing bands.

D'autres caractéristiques et avantages de l'invention apparaîtront 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 keeps a notice in the pocket that it forms with the sleeve, the tab 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;
  • Figures 3 and 4 illustrate the separation progressive shutter by tearing the affected area of the complementary flap, until the shutter is separated and the previously maintained notice is released;
  • Figure 5 is an end view of the envelope of Figures 1 to 4 already shaped, before its establishment on the container and its heat shrinkage on said container;
  • Figure 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 various flaps by tearing of 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;
  • Figure 12 illustrates yet another variant wherein 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 put in place 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.FIG. 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 cap 3, and the packaging envelope 100 tightly surrounds the body of this container as a result of 'a heat shrink on it. Such a container is of course given by way of example, in order to illustrate a particular case of an object packaged using an envelope in accordance with 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 comprises a main portion 101 closely surrounding the body of the container 1, as well as a complementary flap 103 extending externally by superposition being connected by its two lateral ends to the main portion 101 of the sleeve, by two parallel weld lines 102 and 105. In this case, the complementary flap 103 defines with the main portion 101 of the sleeve a pocket in which a notice is inserted 10. The envelope 100 thus has 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 s '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 the manual 10 housed in the associated pocket, it is necessary to detach at least part of the complementary flap 103. For this purpose, there is provided a gripping tab formed by means of a particular cutout, and which allows the formation by tearing of a flap, until reaching a line of punctures or the like allowing the final separation of the torn flap.

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.Thus, and in accordance with an essential characteristic of the invention, the complementary flap 103 has an added reinforcement strip 106, in which a cutout 110 is formed defining the outline of a gripping tongue 114 whose lateral edges extend substantially. perpendicular to the direction of the reinforcement strip 106. The detail in FIG. 2 makes it possible to better distinguish the arrangement of this cutout 110. The cutout 110 crossing the wall of the flap and the reinforcement strip 106 which is associated with it, thus comprises a main section 111 extending in the direction of the reinforcing strip 106 and then two lateral sections 112 extending from the ends of this central section 111, these lateral sections further extending at the level of the reinforcing strip 106. The lateral sections 112 shown here are perpendicular to the central section 111. However, an angle less than or greater than 90 ° may be provided, as shown schematically in Figure 2 by the angular range noted α. In practice, the sections 111, 112 will form between them an angle ranging from 80 ° to 120 °. This is to make it clear that the expression "substantially perpendicularly "used above must in no case be understood in a restrictive sense, but on the contrary this expression encompasses a certain angular range on either side of what can be considered as a general direction.

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 cutout portion of the reinforcing strip 106, which makes it possible to guarantee the necessary qualities of rigidity and permanence before and after retraction of this gripping tab. The two slots 113 made in the wall of the flap 103, beyond the reinforcing strip 106, thus form tear initiators. The complementary flap 103 also has a line of pits or the like 104 extending in a direction substantially parallel to the direction of the reinforcing strip 106 and at a distance therefrom.

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 produced by pulling the associated tongue 114. In FIG. 3, we have started to pull the tongue 114 and to make a part of tearing of the relevant portion of the complementary flap 103, thereby enlarging the two extension slots 113, the tear lines to be followed being illustrated by phantom 116. In FIG. 4, the flap 115 has been completely released by tearing of the wall of the flap up to the line of stitching 104, which makes it possible to detach this flap, and to release 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 pits or the like 104 made in the complementary flap 103. The reinforcing strip 106 is here arranged against the internal face of the complementary flap 103, which is interesting, but in no way obligatory. It has been noted d the width of the cut (in a circumferential direction), part of which d1 extends in the width of the reinforcing strip 106, and another part d2 extends in 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 FIG. 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 weld line 102, and its two zones, denoted C, C ′ associated with the weld line 105. A complementary flap 103 is also distinguished, connected to the main portion 101 of the envelope by the stitching line 104, which complementary flap has a terminal zone C 'associated with the aforementioned zone C to form the weld line 105. As is easy to understand, when the envelope 100 is shaped, the 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. A reinforcement strip 106 is also distinguished, in which the cutout 110 is made, which is extended at its two ends by the two slots 113 relating to the single wall of the raba t complementary 103, therefore beyond the reinforcing strip 106. In FIG. 6, the zones A ′ and C ′ are represented with simple hatching to indicate that these zones are on the interior face of the wall, while the zones A and C are shown with cross-hatching to indicate that these zones are behind the wall of the envelope and therefore seen through 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 constitutes only one example of implementation of the invention, and it is possible to envisage numerous variants coming 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, it will be possible to have the reinforcing strip at another location of the complementary flap, and possibly in another direction. It is also possible to provide a reinforcing strip produced in disjoint sections. As regards the cutting, this can be of various shapes and dimensions; it can be multiple or organized in successive cuts, to have a plurality of tabs making it possible to generate as many flaps or detachable 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 FIGS. 7 to 11, in which the same references have been kept for the homologous elements, so that 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 of the stitching line or the like 104 have been reversed compared to the previous variant. In this case, the tongue 114 resulting from the cut made at the level of the reinforcing strip 106 is arranged in such a way that the formation of the flap by tearing of the zone concerned of the complementary flap 103 is carried out from left to right, that is to say in a direction opposite to that of the previous variant. In addition, as for the previous variant, the reinforcing strip 106 is arranged on the internal face of the complementary flap 103, which in particular makes it possible to print the tongue 114 on its external face, as has been shown diagrammatically in the figure. 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 tronçon. 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 along the same generatrix of the section. Each of these sections has a cut 110 of the same type as the cut of the previous variant, except that it relates to a height possibly weaker of the sleeve, so that there are two gripping tabs 114. Each tab 114 makes it possible to generate a flap or coupon 115 by tearing the wall of the complementary flap 103, this tearing being naturally initiated by the slots of extension of each of the cutouts 110, these slots themselves extending by the lines illustrated in phantom 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.FIG. 9 illustrates another variant differing from the previous variant in that the reinforcement strip 106 (again unique) now has a multiple cutout 110 making it possible to generate three tongues 114 which are directly contiguous with each other. In this case, the three flaps or coupons 115 which can be obtained by pulling on the respective tabs 114, with corresponding tearing in the wall of the complementary flap 103, are directly adjacent, that is to say that certain lines 116 may be common to two adjacent shutters. We then obtain a real system of multiple detachable coupons.

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.FIG. 10 illustrates another variant in which the reinforcing strip 106 no longer extends along a generatrix of the sleeve, but in a circumferential direction of said sleeve. This reinforcing strip 106, here unique, can naturally be arranged in successive sections arranged along a circumferential line. At least one cutout 110 is then provided (here three contiguous cutouts forming a triple cutout) making it possible to generate one or more flaps 115 obtained by tearing the wall of the complementary flap 103, this tearing then taking place along lines 116 which are now arranged along generatrices of the sleeve, the line of punctures 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 one could alternatively provide to have the reinforcing strip 106, always in a circumferential direction, but in the vicinity of the lower edge of the sleeve, in which case the release of each of the flaps will be done by pulling on the tab 114 corresponding from bottom to top. The plan view of FIG. 11 makes it possible to better distinguish the arrangement of the envelope of FIG. 10, with its reinforcing strip 106 disposed along the length of the envelope flat, the line of stitching 104 being parallel to this reinforcement strip 106, and disposed 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 reinforcing strip which extends along a generatrix of the sleeve, this strip will preferably extend over the entire height of the sleeve, like the line of stitching or the like, which considerably simplifies manufacture. Indeed, a continuous film is then used coated with an unwound ribbon corresponding to the reinforcing strip, this film being cut transversely into sections corresponding to the desired height of the sleeve. Similarly, when using a single reinforcement strip which extends in a circumferential direction of the sleeve, this reinforcement strip will preferably extend over the available length of the complementary flap between the two weld lines connecting the said weld flap at the main portion of the sleeve, as is the line of stings or the like. By using a maximum length for the reinforcing strip, it is thus possible to size and / or position at will the cutout or cuts as required.

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 cut or cuts can be made either on the flat envelope, or once this envelope is already shaped, that is to say after completion of the two parallel weld lines. The realization of the cutout (s) on the flat envelope does not pose any particular difficulty. On the other hand, if one wishes to make this or these cuts on the already shaped envelope, there is a risk of marking the outer wall of the main portion of the sleeve by contact with a part of the cutting tool used to produce the or cut them (s) in the complementary flap. One could then generate a risk of marks or cracks located in the main portion, cracks which are highly undesirable insofar as they would be naturally enlarged during the heat shrinkage of the envelope on the object, thus inducing an unacceptable risk of rupture. To avoid this drawback, it is advantageous to provide that the main portion of the sleeve also has a reinforcing strip. Such a variant is illustrated in FIGS. 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 FIGS. 12 to 14 differs only from the envelope of FIGS. 1 to 6 by the presence of a reinforcing strip 107 which has the main portion 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 on the latter. An additional reinforcement is thus obtained during the formation of the cutout (s) 110 made on the envelope already shaped. Illustrated here is a reinforcing strip 107 disposed against the inner wall of the main portion 101, but it goes without saying that one can also provide an arrangement on the outer wall. In addition, if the reinforcing strip 106 is produced in the form of disjointed sections, provision may also be made for separate sections for the second reinforcing strip 107, since naturally each of these sections would overlap the sections 106 in order to perform the aforementioned reinforcing 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 provide that the reinforcement strip (s) 106, 107 will be made of plastic material from a mono-oriented film in a determined direction, this or these reinforcement strip (s) then being 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 may 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 chaîne 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 constituent film of the sleeve will preferably be mono-oriented, in a longitudinal or transverse direction, and the or each reinforcing strip 106 will then extend respectively circumferentially or axially. The elongation of the molecular chain of the film resulting from the mono-orientation is thus elegantly used to facilitate the tearing which takes place in the direction of orientation of the film, so that the formation of one or more flaps in is made easier. On the other hand, the reinforcing 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 on the back. In the case of several adjacent flaps, it goes without saying that it is possible to provide flaps of identical or different sizes, which makes it possible to organize with great freedom a cutting 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 the packaging of a single object, as has just been described, but also to the packaging of a group of objects by means of a sleeve with several compartments, in in particular a sleeve produced in accordance with document FR-A-2 637 866 of the applicant. 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 the 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, the identical or homologous parts of the envelope 100 previously described will be given the same references increased by one hundred, and will not be described again.

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.In the case of a sleeve with two compartments, a second weld line 208 is provided, arranged at a distance from the first weld line 202, so as to define an intermediate membrane 209. The line 208 is naturally parallel to the line 202, and FIGS. 16 and 17 allow a better understanding of the shape taken by this envelope 200, respectively deposited and retracted on the two objects 11, 12, and before being put on these two objects. The developed view of FIG. 18 thus makes it possible to better distinguish the zones B, B 'associated with the conformation of the second weld line 208. We also find the zones A, A' associated with the first weld line 202, and zones C, C 'associated with the weld line 205, as for the preceding sleeve enveloping a single object. For the rest, the organization of the complementary flap 203, with its line of stitching 204 and its reinforcement strip 206, and with its tab (s) 214 resulting from cutout (s) 210 at the level of this reinforcement strip 206. As previously , one can thus form a plurality (here two) of flaps or coupons 215 detachable 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 described above with reference to FIGS. 7 to 14 can be transposed for envelopes with several compartments, 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 have thus managed to produce an envelope whose complementary flap can generate one or more flaps or coupons which are detachable by virtue of a traction exerted on an associated tongue which is both rigid and permanent, and with minimal effort. The multiple choices for the arrangement and sizing of the tongue-generating cutouts make it possible to adapt to many different situations as required.

L'invention n'est pas limitée aux modes de réalisation qui viennent d'être décrits, mais englobe au contraire toute variante reprenant, avec des moyens équivalents, les caractéristiques essentielles énoncées plus haut.The invention is not limited to the embodiments which have just been described, but on the contrary encompasses any variant incorporating, with equivalent means, the essential characteristics set out above.

Claims (15)

Enveloppe (100 ; 200) 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 (101 ; 201) 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 (103 ; 203) 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 (102,105 ; 202,205), caractérisée en ce que le rabat complémentaire (103 ; 203) présente au moins une bande rapportée de renfort (106 ; 206) dans laquelle est pratiquée au moins une découpe (110 ; 210) définissant le contour d'une languette de préhension (114 ; 214) dont les bords latéraux s'étendent sensiblement perpendiculairement à la direction de la bande de renfort (106 ; 206), la ou chaque découpe (110 ; 210) se prolongeant au-delà de ladite bande par deux fentes (113 ; 213) pratiquées dans la paroi du rabat et formant amorces de déchirure, ledit rabat présentant en outre une ligne de piqûres ou analogues (104 ; 204) s'étendant dans une direction sensiblement parallèle à la direction de la bande de renfort (106 ; 206) et à distance de celle-ci, pour permettre de détacher le volet (115 ; 215) obtenu par déchirure de la portion concernée dudit rabat réalisée en tirant la languette associée (114 ; 214).Envelope (100; 200) intended for the packaging of at least one object, of the type constituted by a sleeve of heat-shrinkable plastic material capable of closely surrounding by a main portion (101; 201) at least a part of the object in case of single object, or group of objects in case of plurality of objects, said sleeve further comprising a complementary flap (103; 203) extending externally by superposition being connected at its lateral ends to the main portion of the sleeve by two parallel weld lines (102,105; 202,205), characterized in that the complementary flap (103; 203) has at least one added reinforcing strip (106; 206) in which at least one cutout is made ( 110; 210) defining the outline of a gripping tab (114; 214) whose lateral edges extend substantially perpendicular to the direction of the reinforcing strip (106; 206), the or each cutout (110; 210) extending beyond said strip by two slots (113; 213) formed in the wall of the flap and forming tear openings, said flap further having a line of pits 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, in order to detach the flap (115; 215) obtained by tearing of the portion concerned of said flap produced by pulling the associated tab (114; 214). Enveloppe selon la revendication 1, caractérisée en ce que la ou chaque bande de renfort (106 ; 206) s'étend selon une génératrice du manchon.Envelope according to claim 1, characterized in that the or each reinforcing strip (106; 206) extends along a generatrix of the sleeve. Enveloppe selon la revendication 2, caractérisée en ce que la ou chaque bande de renfort (106 ; 206) est disposée au voisinage de l'une des deux lignes de soudure (102,105 ; 202,205) reliant le rabat complémentaire (103 ; 203) à la portion principale (101 ; 201) du manchon.Envelope according to claim 2, characterized in that the or each reinforcing strip (106; 206) is arranged in the vicinity of one of the two weld lines (102,105; 202,205) connecting the complementary flap (103 ; 203) to the main portion (101; 201) of the sleeve. Enveloppe selon la revendication 2 ou 3, caractérisée en ce que la bande de renfort (106 ; 206) est unique, et s'étend sur toute la hauteur du manchon, tout comme la ligne de piqûres ou analogues (104 ; 204).Envelope according to claim 2 or 3, characterized in that the reinforcing strip (106; 206) is unique, and extends over the entire height of the sleeve, like the line of stitching or the like (104; 204). Enveloppe selon la revendication 1, caractérisée en ce que la ou chaque bande de renfort (106) s'étend selon une direction circonférentielle du manchon.Envelope according to claim 1, characterized in that the or each reinforcing strip (106) extends in a circumferential direction of the sleeve. Enveloppe selon la revendication 5, caractérisée en ce que la ou chaque bande de renfort (106) est disposée au voisinage du bord supérieur ou du bord inférieur du manchon.Envelope according to claim 5, characterized in that the or each reinforcing strip (106) is arranged in the vicinity of the upper edge or the lower edge of the sleeve. Enveloppe selon la revendication 5 ou 6, caractérisée en ce que la bande de renfort (106) est unique, et s'étend sur la longueur disponible du rabat complémentaire (103) entre les deux lignes de soudure (102,105) reliant ledit rabat à la portion principale (101) du manchon, tout comme la ligne de piqûres ou analogues (104).Envelope according to claim 5 or 6, characterized in that the reinforcing strip (106) is unique, and extends over the available length of the complementary flap (103) between the two weld lines (102,105) connecting said flap to the main portion (101) of the sleeve, as is the line of punctures or the like (104). Enveloppe selon l'une des revendications 1 à 7, caractérisée en ce que la ou chaque bande de renfort (106 ; 206) est disposée contre la face interne du rabat complémentaire (103 ; 203).Envelope according to one of claims 1 to 7, characterized in that the or each reinforcing strip (106; 206) is disposed against the internal face of the complementary flap (103; 203). Enveloppe selon la revendication 8, caractérisée en ce que la ou chaque languette (114 ; 214) est imprimée sur sa face extérieure.Envelope according to claim 8, characterized in that the or each tongue (114; 214) is printed on its outer face. Enveloppe selon l'une des revendications 1 à 9, caractérisée en ce que le rabat complémentaire (103) présente des lignes de micro-perforations (116) reliant chaque fente de prolongement (113) à la ligne de piqûres ou analogues (104), en particulier lorsque l'épaisseur du film constitutif du manchon est importante.Envelope according to one of claims 1 to 9, characterized in that the complementary flap (103) has lines of micro-perforations (116) connecting each extension slot (113) to the line of stitching or the like (104), in particular when the thickness of the film constituting the sleeve is large. Enveloppe selon l'une des revendications 1 à 10, caractérisée en ce que le ou chaque volet (115 ; 215) est imprimé au recto et/ou au verso.Envelope according to one of claims 1 to 10, characterized in that the or each flap (115; 215) is printed on the front and / or on the back. Enveloppe selon l'une des revendications 1 à 11, caractérisée en ce que plusieurs volets adjacents (115 ; 215) sont prévus, de tailles identiques ou différentes.Envelope according to one of claims 1 to 11, characterized in that several adjacent flaps (115; 215) are provided, of identical or different sizes. Enveloppe selon l'une des revendications 1 à 12, caractérisée en ce que le film constitutif du manchon est mono-orienté, selon une direction longitudinale ou transversale, et la ou chaque bande de renfort (106 ; 206) s'étend alors respectivement circonférentiellement ou axialement.Envelope according to one of claims 1 to 12, characterized in that the film constituting the sleeve is mono-oriented, in a longitudinal or transverse direction, and the or each reinforcement strip (106; 206) then extends respectively circumferentially or axially. Enveloppe selon l'une des revendications 1 à 13, caractérisée en ce que la portion principale (101) du manchon présente également au moins une bande de renfort (107), disposée de telle façon que la ou chaque bande de renfort (106) du rabat complémentaire (103) se superpose à celle(s)-ci, pour assurer un renfort supplémentaire lors de la formation de la ou des découpes (110) effectuées sur l'enveloppe déjà mise en forme.Envelope according to one of claims 1 to 13, characterized in that the main portion (101) of the sleeve also has at least one reinforcing strip (107), arranged in such a way that the or each reinforcing strip (106) of the complementary flap (103) is superimposed on that (s), to provide additional reinforcement during the formation of the cutout (s) (110) made on the envelope already shaped. Enveloppe selon l'une des revendications 1 à 14, caractérisée en ce que la ou les bandes de renfort (106,107 ; 206) 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.Envelope according to one of claims 1 to 14, characterized in that the reinforcement strip (s) (106,107; 206) are made of plastic, from a film oriented in a predetermined direction, said strip (s) reinforcement being obtained in such a way that their longitudinal direction is parallel to this 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
FR9514015 1995-11-27
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

Publications (2)

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

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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)

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GB2315256A (en) * 1996-07-16 1998-01-28 Andrew William Wilkey Label with releasable flap
WO1998025834A1 (en) * 1996-12-10 1998-06-18 Sleever International Company Sleeve-type envelope of heat-shrinkable plastic material for packaging at least one item
GB2309954B (en) * 1996-02-06 1999-12-15 Huang Fu Chuan Package film device
FR2804660A1 (en) * 2000-02-08 2001-08-10 Sleever Int OBJECT HOLDER ASSEMBLY PLUG ON A PACKAGING TO BE ASSOCIATED WITH IT BY SNAP
WO2002000518A1 (en) 2000-06-30 2002-01-03 Sleever International Company Envelope for packaging at least an object, consisting of a heat-shrinkable plastic material sleeve
EP1262414A2 (en) * 2001-05-31 2002-12-04 PILOT ITALIA S.p.A. Thermally insulating label for beverage vessels
WO2002098742A2 (en) * 2001-06-01 2002-12-12 Interactive Packaging Group, Ltd. Method, machine and object for placement of multiple labels
EP1512634A1 (en) * 2003-09-05 2005-03-09 Autobar Flexible Packaging Process of producing a packabge of a strechable plastic film
FR2892392A1 (en) * 2005-10-25 2007-04-27 Sleever Internat Company Sa Cover for wrapping container of consumer good such as food has walls that present patterns of printing behind detachable circumferential strip so that corresponding pattern of printing appears once circumferential strip is detached
EP1819611A1 (en) * 2004-12-06 2007-08-22 Modern Media Concepts Pty Ltd Packaging for a disposable item
ITUA20163778A1 (en) * 2016-05-25 2017-11-25 Stefano Pantani A label preferably for bottles of alcohol
CN109515851A (en) * 2017-09-20 2019-03-26 深圳市富云帝科技有限公司 Easy-to-tear film packing machine and technology of the package

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FR3003549B1 (en) * 2013-03-19 2015-04-10 Sleever Int SECURITY ENVELOPE FOR PROVIDING ANTI-OPENING PROTECTION OF CONTAINERS, OBJECT COVERED WITH SUCH AN ENVELOPE AND METHOD FOR REGISTERING INFORMATION ON SUCH AN ENVELOPE

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Cited By (24)

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Publication number Priority date Publication date Assignee Title
GB2309954B (en) * 1996-02-06 1999-12-15 Huang Fu Chuan Package film device
GB2315256A (en) * 1996-07-16 1998-01-28 Andrew William Wilkey Label with releasable flap
US6322864B1 (en) 1996-12-10 2001-11-27 Sleever International Company Sleeve-type envelope of heat-shrinkable plastic material for packaging at least one item
WO1998025834A1 (en) * 1996-12-10 1998-06-18 Sleever International Company Sleeve-type envelope of heat-shrinkable plastic material for packaging at least one item
GB2362629B (en) * 2000-02-08 2003-03-12 Sleever Internat An article-carrier assembly fittable onto a package to be associated therewith by snap-fastening
FR2804660A1 (en) * 2000-02-08 2001-08-10 Sleever Int OBJECT HOLDER ASSEMBLY PLUG ON A PACKAGING TO BE ASSOCIATED WITH IT BY SNAP
GB2362629A (en) * 2000-02-08 2001-11-28 Sleever Internat Object-holder assembly adapted to be mounted on a package to be associated therewith by snap-on connection
WO2001058770A1 (en) * 2000-02-08 2001-08-16 Sleever International Company Object-holder assembly adapted to be mounted on a package to be associated therewith by snap-on connection
WO2002000518A1 (en) 2000-06-30 2002-01-03 Sleever International Company Envelope for packaging at least an object, consisting of a heat-shrinkable plastic material sleeve
FR2810967A1 (en) 2000-06-30 2002-01-04 Sleever Int ENVELOPE FOR PACKAGING AT LEAST ONE OBJECT, OF THE TYPE CONSISTING OF A SLEEVE OF HEAT-SHRINKABLE PLASTIC MATERIAL
US6722495B2 (en) 2000-06-30 2004-04-20 Sleever International Company Envelope for packaging at least one article, the envelope being of the type constituted by a sleeve of heat shrink plastic material
EP1262414A2 (en) * 2001-05-31 2002-12-04 PILOT ITALIA S.p.A. Thermally insulating label for beverage vessels
EP1262414A3 (en) * 2001-05-31 2004-06-30 PILOT ITALIA S.p.A. Thermally insulating label for beverage vessels
WO2002098742A3 (en) * 2001-06-01 2003-02-20 Richard Schaupp Method, machine and object for placement of multiple labels
WO2002098742A2 (en) * 2001-06-01 2002-12-12 Interactive Packaging Group, Ltd. Method, machine and object for placement of multiple labels
US6793755B2 (en) 2001-06-01 2004-09-21 Interactive Packaging Group, Ltd. Method and machine for placement of multiple labels
EP1512634A1 (en) * 2003-09-05 2005-03-09 Autobar Flexible Packaging Process of producing a packabge of a strechable plastic film
EP1819611A1 (en) * 2004-12-06 2007-08-22 Modern Media Concepts Pty Ltd Packaging for a disposable item
EP1819611A4 (en) * 2004-12-06 2010-11-03 Modern Media Concepts Pty Ltd Packaging for a disposable item
FR2892392A1 (en) * 2005-10-25 2007-04-27 Sleever Internat Company Sa Cover for wrapping container of consumer good such as food has walls that present patterns of printing behind detachable circumferential strip so that corresponding pattern of printing appears once circumferential strip is detached
EP1780135A1 (en) * 2005-10-25 2007-05-02 Sleever International Company Envelope of the type consisting of a heat shrinkable plastic sleeve for packaging at least one object
US8875887B2 (en) 2005-10-25 2014-11-04 Sleever International Company Cover for wrapping at least one article, the cover being of the type constituted by a sleeve of heat-shrinkable plastics material
ITUA20163778A1 (en) * 2016-05-25 2017-11-25 Stefano Pantani A label preferably for bottles of alcohol
CN109515851A (en) * 2017-09-20 2019-03-26 深圳市富云帝科技有限公司 Easy-to-tear film packing machine and technology of the package

Also Published As

Publication number Publication date
PT775643E (en) 2000-07-31
GR3033174T3 (en) 2000-08-31
FR2741604A1 (en) 1997-05-30
FR2741604B1 (en) 1998-01-02
ES2143735T3 (en) 2000-05-16
DE69606500T2 (en) 2000-08-24
DE69606500D1 (en) 2000-03-09
EP0775643B1 (en) 2000-02-02

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