EP0968928A1 - Sealably reclosable bag - Google Patents

Sealably reclosable bag Download PDF

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Publication number
EP0968928A1
EP0968928A1 EP99420148A EP99420148A EP0968928A1 EP 0968928 A1 EP0968928 A1 EP 0968928A1 EP 99420148 A EP99420148 A EP 99420148A EP 99420148 A EP99420148 A EP 99420148A EP 0968928 A1 EP0968928 A1 EP 0968928A1
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EP
European Patent Office
Prior art keywords
cutout
elements
resealable
closure
bag
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
EP99420148A
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German (de)
French (fr)
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EP0968928B1 (en
Inventor
Yves Greuet
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.)
AUTOBAR FLEXIBLE FRANCE
Original Assignee
AUTOBARS PLASTIQUES
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Publication of EP0968928A1 publication Critical patent/EP0968928A1/en
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Publication of EP0968928B1 publication Critical patent/EP0968928B1/en
Anticipated expiration legal-status Critical
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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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5827—Tear-lines provided in a wall portion
    • B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall
    • B65D75/5838—Tear-lines provided in a wall portion for tearing out a portion of the wall combined with separate fixed tearing means, e.g. tabs
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2516—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener
    • B65D33/2533—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener the slide fastener being located between the product compartment and the tamper indicating means
    • 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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2575—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor the slide fastener providing access to the bag through a bag wall, e.g. intended to be cut open by the consumer
    • B65D33/2583—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor the slide fastener providing access to the bag through a bag wall, e.g. intended to be cut open by the consumer the slide fastener being attached to one wall only

Definitions

  • this type of closure is not perfectly waterproof due to even of its structure and its method of installation. Indeed. despite their latching, the two elements of the closure do not have a sufficient air and moisture tightness entering the bag through the perforations of the tearable cutout.
  • the adhesive fragment 12 does not act on the tightness of the cut but remains the driving element generating the creation tear lines.

Abstract

The bag is formed from a sheet (2) of material, which may be simple or complex. It has two component parts (7,8) of the closure that cover the junction (11). A cut out is formed in one part which starts the tear of the closure and is covered by a piece of adhesive tape (12) with a tab (13) attached to it. A stop point is provided which limits the length of the tear over the area that covers the junction.

Description

L'invention est relative à un sac refermable étanche à ouverture par déchirage.The invention relates to a waterproof resealable bag with opening by scrapping.

On connaít, par la demande internationale WO 97/06062, un sac refermable composé d'une nappe en matière synthétique dont les bords longitudinaux sont liés par une soudure pour former une gaine, dont les bords transversaux sont fermés par des soudures transversales et dont la paroi antérieure est munie d'une fermeture encliquetable. Cette fermeture comprend deux éléments munis de moyens de liaison complémentaires pouvant être désengagés pour former une ouverture, et être réengagés ultérieurement. Ces éléments sont disposés à l'intérieur du sac contre une languette déchirable prédécoupée.We know, by international application WO 97/06062, a bag resealable composed of a synthetic material tablecloth whose edges longitudinal are linked by a weld to form a sheath, the edges of which transverse are closed by transverse welds and whose wall front has a snap closure. This closure includes two elements provided with complementary connecting means which can be disengaged to form an opening, and be reengaged later. These elements are arranged inside the bag against a tear-off tab precut.

Pour accéder au contenu du sac, il faut, lors de la première ouverture, déchirer la languette prédécoupée puis désolidariser les éléments complémentaires de la fermeture. Après déversement d'une quantité voulue du contenu, le sac peut être refermé en engageant à nouveau les moyens complémentaires de la fermeture.To access the contents of the bag, you must, during the first opening, tear off the pre-cut tab then separate the elements complementary to the closure. After spilling a desired amount of contents, the bag can be closed by re-engaging the means complementary to the closure.

S'il importe peu que, après la première ouverture, le sac soit parfaitement étanche, puisqu'en général son contenu est destiné à une consommation rapide, pour certaines applications il est par contre souhaitable que ce contenu ne puisse pas être altéré par l'air ou l'humidité extérieure, entre la phase de remplissage du sac et sa première ouverture.If it does not matter that, after the first opening, the bag is perfectly waterproof, since in general its content is intended for fast consumption, for certain applications it is however desirable that this content cannot be altered by air or external humidity, between the bag filling phase and its first opening.

Or ce type de fermeture n'est pas parfaitement étanche en raison même de sa structure et de son mode de pose. En effet. malgré leur encliquetage, les deux éléments de la fermeture ne présentent pas une étanchéité suffisante à l'air et à l'humidité pénétrant dans le sac par les perforations de la découpe déchirable.However, this type of closure is not perfectly waterproof due to even of its structure and its method of installation. Indeed. despite their latching, the two elements of the closure do not have a sufficient air and moisture tightness entering the bag through the perforations of the tearable cutout.

La présente invention a pour objet de remédier à cela en fournissant un sac étanche, aisément ouvrable la première fois et pouvant être refermé après la première ouverture.The object of the present invention is to remedy this by providing a waterproof bag that can be easily opened the first time and can be closed after the first opening.

A cet effet, le sac selon l'invention est réalisé dans une nappe, simple ou complexe, et cette nappe comporte, dans sa partie couvrant la zone de jonction des deux éléments de la fermeture refermable :

  • d'une part, une découpe qui, formant amorce de rupture, est recouverte par un fragment de ruban adhésif avec languette d'arrachage.
  • et, d'autre part, au moins un point d'arrêt limitant le déchirage du sac dans sa partie couvrant la zone de jonction des éléments de la fermeture refermable.
To this end, the bag according to the invention is produced in a sheet, simple or complex, and this sheet comprises, in its part covering the junction zone of the two elements of the reclosable closure:
  • on the one hand, a cutout which, forming the beginning of a rupture, is covered by a fragment of adhesive tape with tear-off tab.
  • and, on the other hand, at least one stopping point limiting the tearing of the bag in its part covering the junction zone of the elements of the reclosable closure.

Dans ce sac, la découpe est totalement recouverte par le fragment d'adhésif qui forme, ainsi, une barrière garantissant l'étanchéité du sac à l'air et à l'humidité. Lors de la première ouverture, une traction sur la languette d'arrachage du ruban adhésif en direction du point d'arrêt, dégage d'abord la découpe qui amorce la rupture de la nappe et provoque le déchirage de cette nappe, et éventuellement des nappes auxquelles elle est liée, en formant une ouverture transversale d'accès à la fermeture refermable.In this bag, the cutout is completely covered by the fragment of adhesive which thus forms a barrier guaranteeing the airtightness of the bag and moisture. When opening for the first time, pulling on the tab tear off the adhesive tape towards the breakpoint, first release the cut which initiates the rupture of the sheet and causes the tearing of this sheet, and possibly sheets to which it is linked, forming a transverse opening of access to resealable closure.

Dans une forme d'exécution, la découpe est disposée latéralement d'un côté de la zone de jonction des deux éléments de fermeture refermable, tandis que le point d'arrêt est disposé de l'autre côté.In one embodiment, the cutout is arranged laterally on one side of the junction area of the two reclosable closure elements, while the breakpoint is located on the other side.

Dans une forme de mise en oeuvre, la nappe ou au moins la couche extérieure de cette nappe est réalisée dans une matière synthétique aisément déchirable et, par exemple, composée d'une polyoléfine et d'un ionomère.In one form of implementation, the sheet or at least the outer layer of this sheet is made of a synthetic material easily tearable and, for example, composed of a polyolefin and a ionomer.

Ainsi, la traction sur la languette d'arrachage provoque, par la découpe, l'amorce de rupture de la nappe en matière synthétique aisément déchirable et cela jusqu'au point d'arrêt.Thus, the traction on the tear-off tab causes, by the cutting, the initiation of breakage of the plastics material easily tearable up to the point of stopping.

Dans une autre forme de mise en oeuvre, la nappe est composée d'une couche extérieure en matière synthétique fragilisable par un faisceau laser et d'au moins une autre couche en une matière non fragilisable par ce faisceau, et comporte, au moins dans le prolongement de la découpe et jusqu'au point d'arrêt, deux lignes de microperforations espacées réalisées par faisceau laser dans la seule couche extérieure de la nappe.In another form of implementation, the sheet is composed an outer layer of synthetic material which can be weakened by a beam laser and at least one other layer of a material which cannot be broken down by this bundle, and comprises, at least in the extension of the cut and to the breakpoint, two lines of spaced microperforations produced by laser beam in the only outer layer of the web.

Dans ce cas, l'arrachage de la languette entraíne. par la découpe. la rupture des intervalles entre microperforations, et la rupture des autres couches de la nappe.In this case, the pulling of the tongue leads. by cutting. breaking the intervals between microperforations, and breaking the others layers of the tablecloth.

Dans une autre forme d'exécution, la découpe est disposée au milieu de la zone de jonction des deux éléments de fermeture refermable. tandis que les points d'arrêt sont constitués par les extrémités de deux lignes de microperforations, réalisées dans la couche extérieure de la nappe, de part et d'autre de la découpe, au-dessus de la zone de jonction des deux éléments de fermeture et constituant lignes de fragilisation. In another embodiment, the cutout is arranged at middle of the junction area of the two closable closing elements. while the breakpoints are formed by the ends of two lines microperforations, made in the outer layer of the web, on the one hand and on the other side of the cut, above the junction area of the two elements closure and constituting lines of weakness.

Dans ce cas, l'arrachage de la languette libère la découpe et permet d'accéder aux éléments de la fermeture, dont l'ouverture manuelle entraíne le découpage des lignes de fragilisation.In this case, tearing off the tab releases the cutout and provides access to the closing elements, including manual opening leads to the cutting of the weakening lines.

L'invention sera mieux comprise à l'aide de la description qui suit en référence au dessin schématique annexé représentant, à titre d'exemple, deux formes d'exécution de ce sac.

  • Figure 1 est une vue de face en élévation, avec coupe partielle du sac.
  • Figure 2 est une vue partielle, en perspective, avec coupe partielle de la zone de fermeture du sac, d'une première forme d'exécution des lignes de déchirage,
  • Figure 3 est une vue partielle, en perspective, de la zone de fermeture du sac, lorsque la découpe est recouverte par un ruban adhésif,
  • Figure 4 est une vue partielle, en perspective, de la zone de fermeture du sac lors de la première ouverture,
  • Figure 5 est une vue partielle en perspective d'une autre forme d'exécution des lignes de déchirage entre découpe et point d'arrêt,
  • Figure 6 est une vue partielle en perspective, avec coupe partielle. montrant une autre forme d'exécution des moyens de déchirage.
    • The invention will be better understood with the aid of the description which follows with reference to the appended schematic drawing representing, by way of example, two embodiments of this bag.
  • Figure 1 is a front view in elevation, with partial section of the bag.
  • FIG. 2 is a partial perspective view, with partial section of the bag closing area, of a first embodiment of the tear lines,
  • FIG. 3 is a partial perspective view of the closure zone of the bag, when the cutout is covered by an adhesive tape,
  • FIG. 4 is a partial perspective view of the zone for closing the bag during the first opening,
  • FIG. 5 is a partial perspective view of another embodiment of the tearing lines between cutting and stopping point,
  • Figure 6 is a partial perspective view, with partial section. showing another embodiment of the tearing means.

    • Dans la forme d'exécution de figures 1 à 4, le sac est réalisé à partir d'une nappe 2, simple ou multicouches dont au moins la couche extérieure est en matière synthétique aisément déchirable et par exemple, composée d'une polyoléfine et d'un ionomère. De tels nappes et films sont bien connus de l'homme de l'art pour leur déchirabilité, et il n'est pas nécessaire d'en préciser davantage la composition qui varie selon les fabricants.In the embodiment of Figures 1 to 4, the bag is made at from a tablecloth 2, simple or multilayer with at least the layer exterior is made of easily tearable synthetic material and for example, composed of a polyolefin and an ionomer. Such tablecloths and films are well known to those skilled in the art for their tearable nature, and it is not necessary to specify more the composition which varies according to manufacturers.

    Au poste de remplissage, la nappe est conformée en gaine avec liaison de ses bords longitudinaux au moyen d'une soudure longitudinale 3. Cette gaine est ensuite fermée par une soudure transversale inférieure 4 pour former une poche qui, après remplissage, est fermée par une soudure transversale supérieure 5, juxtaposée ou non, à un bandeau 6 formant poignée. Ce bandeau, ou le haut du sac, est sectionné de la gaine lors de la réalisation de la soudure transversale inférieure 4 concernant le sac suivant.At the filling station, the sheet is formed into a sheath with connection of its longitudinal edges by means of a longitudinal weld 3. This sheath is then closed by a lower transverse weld 4 for form a pocket which, after filling, is closed by a weld upper transverse 5, juxtaposed or not, with a strip 6 forming handle. This headband, or the top of the bag, is cut from the sheath when realization of the lower transverse weld 4 concerning the following bag.

    Ce sac est équipé d'une fermeture refermable composée de deux éléments 7 et 8 qui, s'encliquetant l'un dans l'autre. sont soudés transversalement en 7a et 8a contre la face interne du sac. Ces éléments sont, bien entendu, disposés transversalement à proximité de la soudure supérieure 5.This bag is equipped with a reclosable closure composed of two elements 7 and 8 which, snapping into each other. are welded transversely at 7a and 8a against the internal face of the bag. These elements are, of course, arranged transversely near the upper weld 5.

    Le sac comporte, dans sa partie couvrant la zone de jonction 11 des deux éléments 7 et 8 et à proximité de l'un des côtés de cette zone, une découpe 9 et, à proximité de l'autre côté de la même zone, un point d'arrêt 10.The bag comprises, in its part covering the junction zone 11 of the two elements 7 and 8 and near one of the sides of this zone, a cutout 9 and, near the other side of the same area, a breakpoint 10.

    Dans la forme d'exécution représentée, la découpe 9 est en forme de demi-cercle dont la concavité est tournée vers le point d'arrêt 10. Ce demi-cercle est prolongé par deux branches 9a, 9b qui sont sensiblement parallèles entre elles et parallèles à la zone de jonction 11 des éléments 7 et 8. Dans une variante de réalisation non représentée, cette découpe est en forme de croix ou de demi-croix.In the embodiment shown, the cutout 9 is shaped semicircle with the concavity facing the breakpoint 10. This semicircle is extended by two branches 9a, 9b which are substantially parallel between them and parallel to the junction zone 11 of the elements 7 and 8. In a variant not shown, this cut is in the form of a cross or half cross.

    Le point d'arrêt 10 est constitué par une soudure longitudinale ne débordant pas de la zone de jonction des deux éléments 7 et 8. mais dont la longueur L est supérieure à l'intervalle D entre les deux branches 9a, 9b de la découpe.The breakpoint 10 is formed by a longitudinal weld not extending beyond the junction zone of the two elements 7 and 8. but whose length L is greater than the interval D between the two branches 9a, 9b of the cutting.

    La découpe 9 est recouverte par un fragment de ruban adhésif 12 comportant, à son extrémité qui est tournée à l'opposé du point d'arrêt 10, une languette d'arrachage 13, c'est-à-dire une languette dont la face 13a n'est pas recouverte de colle.The cutout 9 is covered by a fragment of adhesive tape 12 comprising, at its end which is opposite the stopping point 10, a tear-off tab 13, that is to say a tab whose face 13a is not covered with glue.

    La découpe 9 et la soudure 10 sont réalisées sur la nappe 2 avant conformation du sac, et le fragment 12 de ruban adhésif est placé sur la découpe, avant soudure des éléments 7 et 8 de la fermeture refermable.Cutting 9 and welding 10 are carried out on the web 2 before conformation of the bag, and the fragment 12 of adhesive tape is placed on the cutting, before welding of elements 7 and 8 of the reclosable closure.

    Lorsque le sac est rempli, il présente la forme représentée aux figures 1 et 3, c'est-à-dire est totalement étanche puisque la découpe 9, avec ses branches 9a, 9b, est complètement obturée par le fragment 12 de ruban adhésif.When the bag is filled, it has the shape shown in Figures 1 and 3, that is to say is completely waterproof since the cutout 9, with its branches 9a, 9b, is completely closed by the fragment 12 of ribbon adhesive.

    Pour procéder à la première ouverture, il suffit de redresser la languette 13 et de la tirer dans le sens de la flèche 14 de figure 3. ce qui a pour effet de redresser la partie centrale de la découpe 9 et de favoriser, par ses branches 9a, 9b, la formation d'amorces de rupture formant. dans la paroi déchirable, deux lignes de déchirage 15a, 15b visibles figure 4. Le déchirage s'arrête lorsque ces deux lignes viennent en butée contre le point d'arrêt 10. Il peut alors être procédé au désengagement des deux éléments 7 et 8 de la fermeture. Après vidage partiel du sac, celui-ci peut être refermé en encliquetant de nouveau les éléments 7 et 8. To proceed to the first opening, simply straighten the tab 13 and pull it in the direction of arrow 14 in Figure 3. which has to straighten the central part of the cutout 9 and to favor, by its branches 9a, 9b, the formation of fracture primers forming. in the wall tearable, two tear lines 15a, 15b visible in Figure 4. Tearing stops when these two lines come into abutment against breakpoint 10. It can then be disengaged from the two elements 7 and 8 of the closing. After partial emptying of the bag, it can be closed in snapping elements 7 and 8 back.

    Ce dispositif simple assure l'étanchéité du sac, tout en permettant d'obtenir une ouverture franche et nette, de longueur adaptée aux besoins.This simple device seals the bag, while allowing to obtain a frank and clean opening, of length adapted to the needs.

    Dans la forme d'exécution représentée à la figure 5, la nappe 2 est composée d'une couche extérieure 2a fragilisable par un faisceau laser, et par exemple en polypropylène biorienté, polyester téréphtalate, polyamide biorienté, et d'au moins une autre couche 2b non fragilisable par le même faisceau laser et, par exemple en polyoléfines. Ainsi, lors de la réalisation par ce faisceau de microperforations 16, espacées pour former des pointillés, seule la couche extérieure 2a est affectée. De la sorte, la couche intérieure ou les autres couches du sac ne sont pas affectées et assurent l'étanchéité à l'humidité. Les microperforations sont réalisées dans le prolongement des branches de la découpe 9 qui, comme montré figure 5, peut aussi être réalisée par microperforations pour supprimer l'opération de découpage.In the embodiment shown in Figure 5, the web 2 is composed of an outer layer 2a which can be weakened by a laser beam, and by example in biaxially oriented polypropylene, polyester terephthalate, polyamide bioriented, and at least one other layer 2b which cannot be weakened by the same laser beam and, for example polyolefins. So when making by this bundle of microperforations 16, spaced apart to form dotted lines, only the outer layer 2a is affected. In this way, the inner layer or the other layers of the bag are not affected and ensure the sealing humidity. The microperforations are carried out as an extension of the branches of the cutout 9 which, as shown in FIG. 5, can also be produced by microperforations to suppress the cutting operation.

    Dans ce cas, le fragment d'adhésif 12 n'intervient pas sur l'étanchéité de la découpe mais reste l'élément entraíneur générant la création des lignes de déchirage.In this case, the adhesive fragment 12 does not act on the tightness of the cut but remains the driving element generating the creation tear lines.

    Dans la forme d'exécution représentée figure 6, la nappe 2 est également composée d'une couche extérieure 2a fragilisable par un faisceau laser et d'au moins une couche 2b non fragilisable. La découpe en « U » 19 est délimitée par des perforations et est disposée au milieu de la zone de jonction 11 des deux éléments 7 et 8 de la fermeture et à 90° par rapport aux formes d'exécution précédentes, c'est-à-dire de manière à être tirée longitudinalement par rapport au sac 2 et non transversalement. Les extrémités de la découpe 19 sont juxtaposées aux extrémités intérieures de deux lignes de microperforations 20, réalisées par faisceau laser seulement dans la couche 2a de la nappe, et fragilisant localement la nappe, sensiblement au-dessus de la zone de jonction 11.In the embodiment shown in Figure 6, the web 2 is also composed of an outer layer 2a which can be weakened by a beam laser and at least one non-embrittable layer 2b. The “U” cut 19 is delimited by perforations and is arranged in the middle of the junction 11 of the two elements 7 and 8 of the closure and at 90 ° relative to the previous embodiments, i.e. so as to be pulled longitudinally with respect to the bag 2 and not transversely. The ends of the cutout 19 are juxtaposed with the inner ends of two microperforation lines 20, produced by laser beam only in layer 2a of the sheet, and locally weakening the sheet, substantially above the junction zone 11.

    La découpe 19 est recouverte par un fragment 12 de ruban adhésif avec languette de déchirage 13, obturant les perforations de la découpe 19 et garantissant l'étanchéité du sac, tout en permettant sa première ouverture.The cutout 19 is covered by a fragment 12 of adhesive tape with tear-off tab 13, closing off the perforations in cutout 19 and guaranteeing the waterproofness of the bag, while allowing its first opening.

    Cette première ouverture s'effectue en tirant la languette 13 pour déchirer la découpe 19 jusqu'aux lignes de microperforations 20 qui cèdent, au moins dans leurs parties sous le fragment adhésif 12. A ce stade, il est possible d'introduire un ou plusieurs doigts dans l'ouverture créée pour séparer les éléments 7 et 8 de la fermeture et procéder à l'ouverture du sac. Sous ces efforts perpendiculaires aux nappes, les lignes de fragilisation cèdent jusqu'à leurs extrémités extérieures 20a, formant point d'arrêt, et permettent l'accès au contenu.This first opening is carried out by pulling the tab 13 to tear the cutout 19 to the microperforation lines 20 which yield, at less in their parts under the adhesive fragment 12. At this point, it is possible to introduce one or more fingers into the opening created for separate elements 7 and 8 from the closure and open the bag. Under these forces perpendicular to the sheets, the weakening lines give way to their outer ends 20a, forming a breakpoint, and allow access to content.

    Claims (8)

    Sac refermable étanche à ouverture par déchirage comprenant une fermeture encliquetable et refermable composée de deux éléments (7, 8) fixés transversalement contre la paroi du sac à l'intérieur de celui-ci, et muni chacun de moyens aptes à s'emboíter élastiquement dans des moyens complémentaires de l'autre élément, caractérisé en ce qu'il est réalisé dans une nappe (2), simple ou complexe, comportant, dans sa partie couvrant la zone de jonction (11) des deux éléments (7, 8) de la fermeture refermable : d'une part, une découpe (9, 19) qui, formant amorce de rupture, est recouverte par un fragment (12) de ruban adhésif avec languette d'arrachage (13), et, d'autre part, un point d'arrêt (10), limitant le déchirage du sac à sa partie couvrant la zone de jonction (11) des éléments de la fermeture refermable. Waterproof resealable bag with tear open comprising a snap-on and resealable closure composed of two elements (7, 8) fixed transversely against the wall of the bag inside thereof, and each provided with means capable of fitting elastically into means complementary to the other element, characterized in that it is produced in a sheet (2), simple or complex, comprising, in its part covering the junction zone (11) of the two elements (7, 8) of the resealable closure: on the one hand, a cutout (9, 19) which, forming a starting point, is covered by a fragment (12) of adhesive tape with tear-off tab (13), and, on the other hand, a stopping point (10), limiting the tearing of the bag to its part covering the junction zone (11) of the elements of the reclosable closure. Sac refermable étanche selon la revendication 1, caractérisé en ce que la découpe (9) est disposée latéralement d'un côté de la zone de jonction (11) des deux éléments (7, 8) de fermeture refermable, tandis que le point d'arrêt (10) est disposé de l'autre côté.Resealable waterproof bag according to claim 1, characterized in that the cutout (9) is arranged laterally on one side of the junction zone (11) of the two elements (7, 8) of resealable closure, while the point of stop (10) is arranged on the other side. Sac refermable étanche selon la revendication 2, caractérisé en ce que la découpe (9) est en forme de demi-cercle dont la concavité est tournée vers le point d'arrêt (10) et présente deux branches (9a, 9b) sensiblement parallèles entre elles et à la zone (11) de jonction des éléments (7 et 8) de la fermeture refermable.Waterproof resealable bag according to claim 2, characterized in that the cutout (9) is in the form of a semicircle whose concavity is turned towards the stopping point (10) and has two branches (9a, 9b) substantially parallel between them and to the area (11) for joining the elements (7 and 8) of the reclosable closure. Sac refermable étanche selon l'ensemble des revendications 1 et 2, caractérisé en ce que le point d'arrêt (10) est constitué par une soudure longitudinale dont la longueur (L) est supérieure à l'intervalle (D) entre les branches (9a, 9b) de la découpe (9), mais inférieure à la largeur des deux éléments (7, 8) de la fermeture refermable.Resealable waterproof bag according to all of claims 1 and 2, characterized in that the breakpoint (10) consists of a longitudinal weld whose length (L) is greater than the interval (D) between the branches ( 9a, 9b) of the cutout (9), but less than the width of the two elements (7, 8) of the reclosable closure. Sac refermable selon la revendication 2, caractérisé en ce que la nappe (2) ou au moins la couche extérieure de cette nappe est réalisée dans une matière synthétique aisément déchirable et, par exemple. composée d'une polyoléfine et d'un ionomère.Resealable bag according to claim 2, characterized in that the ply (2) or at least the outer layer of this ply is made of an easily tearable synthetic material and, for example. composed of a polyolefin and an ionomer. Sac refermable selon la revendication 2, caractérisé en ce que la nappe (2) est composée d'une couche extérieure (2a) en matière synthétique fragilisable par un faisceau laser et d'au moins une autre couche (2b) en une matière non fragilisable par ce faisceau, et comporte, au moins dans le prolongement de la découpe (9) et jusqu'au point d'arrêt (10), deux lignes de microperforations (16) espacées réalisées par faisceau laser dans la seule couche extérieure (2a) de la nappe.Resealable bag according to claim 2, characterized in that the ply (2) is composed of an outer layer (2a) of synthetic material which can be weakened by a laser beam and of at least one other layer (2b) of a non-fragile material. by this beam, and comprises, at least in the extension of the cutout (9) and up to the stopping point (10), two lines of microperforations (16) spaced apart produced by laser beam in the only outer layer (2a) of the tablecloth. Sac refermable selon la revendication 6, caractérisé en ce que la découpe (9) est également réalisée par microperforations de la couche extérieure (2a) de la nappe.Reclosable bag according to claim 6, characterized in that the cutout (9) is also produced by microperforations of the outer layer (2a) of the sheet. Sac refermable selon la revendication 1, caractérisé en ce que la découpe (19) est disposée au milieu de la zone de jonction des deux éléments (7, 8) de fermeture refermable, tandis que les points d'arrêt sont constitués par les extrémités (20a) de deux lignes de microperforations (20), réalisées dans la couche extérieure (2a) de la nappe, de part et d'autre de la découpe (19), au-dessus de la zone de jonction (11) des deux éléments de fermeture et constituant lignes de fragilisation.Resealable bag according to claim 1, characterized in that the cutout (19) is arranged in the middle of the junction zone of the two resealable closure elements (7, 8), while the stopping points are formed by the ends ( 20a) of two microperforation lines (20), produced in the outer layer (2a) of the sheet, on either side of the cutout (19), above the junction zone (11) of the two elements closure and constituting lines of weakness.
    EP99420148A 1998-07-03 1999-06-29 Sealably reclosable bag Expired - Lifetime EP0968928B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR9808716A FR2780704B1 (en) 1998-07-03 1998-07-03 WATERPROOF CLOSABLE BAG
    FR9808716 1998-07-03

    Publications (2)

    Publication Number Publication Date
    EP0968928A1 true EP0968928A1 (en) 2000-01-05
    EP0968928B1 EP0968928B1 (en) 2003-03-19

    Family

    ID=9528389

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP99420148A Expired - Lifetime EP0968928B1 (en) 1998-07-03 1999-06-29 Sealably reclosable bag

    Country Status (5)

    Country Link
    EP (1) EP0968928B1 (en)
    AT (1) ATE234764T1 (en)
    DE (1) DE69905984D1 (en)
    ES (1) ES2192026T3 (en)
    FR (1) FR2780704B1 (en)

    Cited By (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1477424A1 (en) * 2003-05-13 2004-11-17 The Procter & Gamble Company Package for compressible flat articles
    EP1780136A1 (en) * 2004-06-28 2007-05-02 Idemitsu Unitech Co., Ltd. Bag with chuck tape
    US9108770B2 (en) * 2013-06-24 2015-08-18 C-P Converters, Inc. Re-sealable packaging

    Families Citing this family (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2816597B1 (en) 2000-11-15 2003-06-13 Autobar Flexible France PACKAGING BAG
    US7651290B2 (en) 2005-05-09 2010-01-26 Kimberly-Clark Worldwide, Inc. Device with pull tab activation
    US7950864B2 (en) 2005-12-13 2011-05-31 Kimberly-Clark Worldwide, Inc. Device with internal pull tab activation

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    Publication number Priority date Publication date Assignee Title
    EP0528721A2 (en) * 1991-08-09 1993-02-24 Minigrip, Incorporated Reclosable plastic bags and method of making same utilizing discontinuous zipper strip
    WO1997006062A1 (en) * 1995-08-09 1997-02-20 James Worth Yeager Zippered film and bag
    WO1998018679A2 (en) * 1996-10-29 1998-05-07 Lakeland Micro, Inc. Method for making tamper-evident container with reclosable fastener

    Patent Citations (3)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP0528721A2 (en) * 1991-08-09 1993-02-24 Minigrip, Incorporated Reclosable plastic bags and method of making same utilizing discontinuous zipper strip
    WO1997006062A1 (en) * 1995-08-09 1997-02-20 James Worth Yeager Zippered film and bag
    WO1998018679A2 (en) * 1996-10-29 1998-05-07 Lakeland Micro, Inc. Method for making tamper-evident container with reclosable fastener

    Cited By (9)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    EP1477424A1 (en) * 2003-05-13 2004-11-17 The Procter & Gamble Company Package for compressible flat articles
    WO2004101388A2 (en) * 2003-05-13 2004-11-25 The Procter & Gamble Company Package for compressible flat articles
    WO2004101388A3 (en) * 2003-05-13 2004-12-29 Procter & Gamble Package for compressible flat articles
    EP1780136A1 (en) * 2004-06-28 2007-05-02 Idemitsu Unitech Co., Ltd. Bag with chuck tape
    EP1780136A4 (en) * 2004-06-28 2008-10-01 Idemitsu Unitech Co Ltd Bag with chuck tape
    US9011006B2 (en) 2004-06-28 2015-04-21 Idemitsu Unitech Co., Ltd. Bag with chuck tape
    US9669967B2 (en) 2004-06-28 2017-06-06 Idemistu Unitech Co., Ltd. Bag with chuck tape
    US10099819B2 (en) 2004-06-28 2018-10-16 Idemitsu Unitech Co., Ltd. Bag with chuck tape
    US9108770B2 (en) * 2013-06-24 2015-08-18 C-P Converters, Inc. Re-sealable packaging

    Also Published As

    Publication number Publication date
    ES2192026T3 (en) 2003-09-16
    ATE234764T1 (en) 2003-04-15
    FR2780704B1 (en) 2000-09-15
    FR2780704A1 (en) 2000-01-07
    DE69905984D1 (en) 2003-04-24
    EP0968928B1 (en) 2003-03-19

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