FR2639617A1 - Enclosure sachet or similar packaging with tamperproof closure - Google Patents
Enclosure sachet or similar packaging with tamperproof closure Download PDFInfo
- Publication number
- FR2639617A1 FR2639617A1 FR8815552A FR8815552A FR2639617A1 FR 2639617 A1 FR2639617 A1 FR 2639617A1 FR 8815552 A FR8815552 A FR 8815552A FR 8815552 A FR8815552 A FR 8815552A FR 2639617 A1 FR2639617 A1 FR 2639617A1
- Authority
- FR
- France
- Prior art keywords
- bag
- metallic
- closure
- edges
- sealing
- 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
Links
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 11
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 7
- 229920000098 polyolefin Polymers 0.000 claims abstract description 5
- 239000003292 glue Substances 0.000 claims description 11
- 239000000853 adhesive Substances 0.000 claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000012943 hotmelt Substances 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 230000000295 complement effect Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000002427 irreversible effect Effects 0.000 claims description 2
- 239000004698 Polyethylene Substances 0.000 description 5
- -1 polyethylene Polymers 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- 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
- B65D33/2541—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 characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
-
- 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
-
- 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
- B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
-
- 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
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
- A44B19/00—Slide fasteners
- A44B19/10—Slide fasteners with a one-piece interlocking member on each stringer tape
- A44B19/16—Interlocking member having uniform section throughout the length of the stringer
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
Abstract
Description
Sachet, enveloppe ou emballage analogue à fermeture inviolable.Sachet, envelope or similar packaging with tamper-evident closure.
La présente invention concerne un sachet, enveloppe ou emballage analogue en matière souple, notamment en polyoléfine, à fermeture inviolable. Elle concerne notamment les emballages pour les envois postaux et analogues et pour des produits à présenter dans les surfaces de vente. The present invention relates to a sachet, envelope or similar packaging made of flexible material, in particular polyolefin, with tamper-evident closure. It relates in particular to packaging for postal and similar items and for products to be presented in sales areas.
Il existe actuellement sur le marché différents sachets de ce type. En général, on peut classer les moyens pour assurer la fermeture inviolable de ces sachets en deux catégories, selon qu'ils emploient un ruban adhésif ou de la colle, notamment de la colle thermofusible. There are currently various sachets of this type on the market. In general, one can classify the means for ensuring the inviolable closure of these sachets in two categories, according to whether they use an adhesive tape or glue, in particular hot-melt glue.
Les sachets dont la fermeture est la plus sûre sont en général ceux comportant deux adhésifs. Pour que le sachet une fois fermé soit effectivement inviolable, il faut que l'adhésif ne puisse pas être séparé du sachet ou analogue d'une part et que les adhésifs eux-mêmes ne puissent pas être séparés l'un de l'autre d'autre part. The bags with the safest closure are generally those with two adhesives. In order for the sachet once closed to be effectively tamper-proof, the adhesive must not be able to be separated from the sachet or the like on the one hand and the adhesives themselves cannot be separated from the other d 'somewhere else.
Les sachets ou enveloppes utilisés pour la correspondance sont le plus souvent constitués à partir d'une feuille en polyéthylène pliée et soudée. Le ruban adhésif posé sur la face extérieure qui, en général, a fait l'objet d'un traitement d'ionisation destiné à favoriser la tenue des encres d'impression, est mieux accroché à la feuille que celui-posé sur la face intérieure du rabat. The bags or envelopes used for correspondence are most often made from a folded and welded polyethylene sheet. The adhesive tape placed on the external face which, in general, has been the subject of an ionization treatment intended to promote the holding of the printing inks, is better attached to the sheet than that placed on the internal face. of the flap.
Il est assez difficile d'ouvrir un sachet de ce type clos et conservé dans une ambiance ordinaire, sans que cela se voie. It is quite difficult to open a bag of this type closed and stored in an ordinary atmosphere, without this being seen.
Cependant, il existe deux méthodes pour ouvrir et refermer ces sachets sans laisser de trace. However, there are two methods to open and close these bags without leaving a trace.
La première consiste à porter le sachet à une température supérieure au point de ramollissement de la colle et inférieure au point de fusion du polyéthylène. The first consists in bringing the sachet to a temperature higher than the softening point of the glue and lower than the melting point of the polyethylene.
L'autre, très facile à mettre en oeuvre, consiste à projeter sur le sachet un liquide ou gaz comprimé contenu dans une bombe et dont la détente provoque un abaissement de la température du sachet à un point tel que la colle perd son pouvoir adhésif. The other, very easy to implement, consists in projecting onto the sachet a liquid or compressed gas contained in a bomb and whose expansion causes the temperature of the sachet to drop to such an extent that the glue loses its adhesive power.
Dans l'un ou l'autre cas, le ruban adhésif se détache du sachet, en premier lieu le ruban adhésif sur le rabat, et l'on peut sans problème retirer le contenu du sachet puis refermer ce dernier. Une fois revenu à la température ambiante, le sachet ne présente aucune trace d'effraction. In either case, the adhesive tape comes off the bag, first the adhesive tape on the flap, and you can easily remove the contents of the bag and then close the latter. Once returned to room temperature, the bag shows no signs of tampering.
D'après le FR-A-2 601 928, on connaît, en outre, un sac ou emballage analogue à fermeture inviolable. From FR-A-2 601 928, there is also known a bag or similar packaging with tamper-evident closure.
La fermeture est assurée par des barrettes en matière plastique présentant des profils complémentaires susceptibles de s'interpénétrer à force pour un assemblage inviolable, par application d'une pression. Par interpénétration à force, il est entendu une interpénétration telle qu'il ne sera pas possible d'obtenir une séparation des deux profils assemblés par simple effort manuel. The closure is ensured by plastic bars having complementary profiles capable of interpenetrating by force for an inviolable assembly, by application of pressure. By force interpenetration, it is understood an interpenetration such that it will not be possible to obtain a separation of the two assembled profiles by simple manual effort.
La fermeture procurée par ces moyens est d'une grande sûreté. Cependant, la mise en oeuvre de barrettes de ce type est parfois difficile. The closure provided by these means is very safe. However, the implementation of bars of this type is sometimes difficult.
La présente invention a pour objectif de remédier aux inconvénients précités et de fournir un sachet, enveloppe ou emballage analogue à fermeture vraiment inviolable, qui soit d'une mise en oeuvre simple et peu onéreuse et d'une présentation impeccable. The present invention aims to remedy the aforementioned drawbacks and to provide a sachet, envelope or similar packaging with a truly inviolable closure, which is simple and inexpensive to use and of impeccable presentation.
L'invention a pour objet un sachet, enveloppe ou emballage analogue en matière souple, notamment en polyoléfine, à fermeture inviolable, possédant une ouverture à deux bords, et des moyens de fermeture, en soi connus, le long desdits bords, permettant une fermeture manuelle de l'ouverture le long desdits bords, caractérisé en ce qu'il comporte des moyens métalliques conducteurs dans les, ou au voisinage immédiat des, moyens de fermeture, permettant le thermo-scellage par induction électromagnétique, d'un matériau thermofusible constitutif desdits bords et/ou desdits moyens de fermeture. The subject of the invention is a sachet, envelope or similar packaging made of flexible material, in particular polyolefin, with tamper-evident closure, having an opening with two edges, and closure means, known per se, along said edges, allowing closure manual opening along said edges, characterized in that it comprises metallic conductive means in the, or in the immediate vicinity of, closing means, allowing the heat-sealing by electromagnetic induction, of a hot-melt material constituting said edges and / or said closing means.
Le matériau thermofusible constitutif desdits bords et/ou desdits moyens de fermeture doit & re soudable avec lui-même. The hot-melt material constituting said edges and / or said closing means must be weldable with itself.
Il s'agit notamment de polyoléfines et de préférence de polyéthylène. These are in particular polyolefins and preferably polyethylene.
La fréquence de l'induction électromagnétique doit être choisie de manière appropriée. De préférence, le moyen métallique permet le thermo-scellage de la fermeture par induction à moyenne fréquence. The frequency of the electromagnetic induction must be chosen appropriately. Preferably, the metallic means allows the heat-sealing of the closure by induction at medium frequency.
Les courants induits dans le moyen métallique provoquent son échauffement, permettant, à son voisinage, la fusion de la matière plastique thermofusible au niveau de la fermeture. L'ensemble est agencé de manière que les éléments de fermeture fusionnent ensemble, sensiblement tout au long de leur zone de contact. The currents induced in the metallic means cause it to heat up, allowing, in its vicinity, the melting of the hot-melt plastic material at the closure. The assembly is arranged in such a way that the closure elements merge together, substantially throughout their contact zone.
Une effraction à l'aide d'outils se traduirait par une destruction définitive et voyante de la fermeture. A break-in using tools would result in definitive and conspicuous destruction of the closure.
Une effraction par chauffage au-dessus du point de fusion provoquerait des déformations définitives et apparentes au niveau de la fermeture. A break-in by heating above the melting point would cause definitive and apparent deformations at the level of the closure.
De préférence, le moyen métallique est un fil métallique de faible diamètre ou un ruban métallique de faible épaisseur et est avantageusement composé d'aluminium. Preferably, the metallic means is a metallic wire of small diameter or a metallic ribbon of thin thickness and is advantageously composed of aluminum.
Selon un mode de réalisation de l'invention, les moyens usuels de fermeture sont deux barrettes en matière plastique présentant des profils complémentaires susceptibles de s'interpénétrer par application d'une pression, le moyen métallique de thermo-scellage étant placé au voisinage de la zone d'interpénétration et sensiblement sur toute la longueur de celle-ci. According to one embodiment of the invention, the usual closing means are two plastic bars having complementary profiles capable of interpenetrating by application of pressure, the metal heat-sealing means being placed in the vicinity of the interpenetration zone and substantially over the entire length thereof.
Sous induction électromagnétique, lorsque les barrettes s'interpénètrent, on obtient un scellage des barrettes entre elles, tout au long de leur zone d'interpénétration. Toutefois, il n'est pas nécessaire que la fusion des barrettes s'effectue sur toute la surface de la zone d'interpénétration. Under electromagnetic induction, when the bars interpenetrate, a sealing of the bars is obtained between them, throughout their interpenetration zone. However, it is not necessary for the bars to merge over the entire surface of the interpenetration zone.
Le moyen métallique peut être soit placé dans une partie en creux de l'une des barrettes, soit noyé dans la masse de l'une des barrettes. The metallic means can either be placed in a hollow part of one of the bars, or embedded in the mass of one of the bars.
Selon un autre mode de réalisation de l'invention, les moyens usuels de fermeture sont constitués par une ou plusieurs bandes d'adhésif ou de colle disposées au voisinage d'un ou plusieurs moyens métalliques. According to another embodiment of the invention, the usual closing means consist of one or more strips of adhesive or glue arranged in the vicinity of one or more metallic means.
De préférence, le moyen métallique est un ruban métallique disposé sur l'une des bandes de colle, le ruban dépassant latéralement au-dessus de portions du sachet exemptes de colle. Preferably, the metallic means is a metallic tape placed on one of the strips of adhesive, the tape projecting laterally above portions of the sachet free of adhesive.
On comprend que sous induction électromagnétique, le ou les moyens mé-talliques provoquent la fusion, donc le soudage, de tronçons nus du sachet entre eux. It is understood that under electromagnetic induction, the metal means cause the fusion, therefore the welding, of bare sections of the bag between them.
Dans un mode de réalisation particulièrement avantageux de l'invention, on peut prévoir des moyens pour visualiser que le thermo-scellage a bien eu lieu. De préférence, ledit moyen provoque un changement de couleur irréversible. In a particularly advantageous embodiment of the invention, it is possible to provide means for visualizing that the heat-sealing has indeed taken place. Preferably, said means causes an irreversible color change.
L'invention va être maintenant décrite plus en détail à l'aide d'exemples de réalisation se référant au dessin annexé dans lequel
la figure 1 représente, en coupe transversale, un modèle de fermeture à barrettes selon l'invention, et
la figure 2 représente, en coupe; une enveloppe à fermeture par colle.The invention will now be described in more detail with the aid of exemplary embodiments referring to the attached drawing in which
FIG. 1 represents, in cross section, a model of bar closure according to the invention, and
Figure 2 shows, in section; an envelope with glue closure.
Les sacs, enveloppes ou emballages selon l'invention sont réalisés de façon usuelle à partir d'une feuille en polyéthylène. The bags, envelopes or packaging according to the invention are produced in the usual way from a polyethylene sheet.
On se réfère tout d'abord à la figure 1. We first refer to Figure 1.
La figure 1 présente deux barrettes profilées i identiques en polyéthylène obtenues par un procédé d'extrusion et comportant une face 2 sensiblement plane et une face 3 présentant des parties en saillie. Figure 1 shows two identical profiled bars i made of polyethylene obtained by an extrusion process and having a substantially flat face 2 and a face 3 having projecting parts.
A l'intérieur des deux bords longitudinaux 4 de l'ouverture du sachet ou analogue, on vient souder les barrettes 1 par leur face plane 2. Inside the two longitudinal edges 4 of the opening of the bag or the like, the bars 1 are welded by their flat face 2.
La face 3 de chacune des barrettes 1 comporte un relief longitudinal en forme de crochet 5 et, à distance dudit crochet 5, un relief longitudinal 6 formant une paroi plane de contre-pression. Entre les deux reliefs 5 et 6 se trouve ce que l'on appelle un logement femelle dans lequel vient s'encliqueter le crochet 5 de l'autre barrette. The face 3 of each of the bars 1 has a longitudinal relief in the form of a hook 5 and, at a distance from the said hook 5, a longitudinal relief 6 forming a flat wall of back pressure. Between the two reliefs 5 and 6 is what is called a female housing in which the hook 5 is snapped onto the other bar.
On introduit, à la sortie de la filière d'extrusion ou au moment de la mise en oeuvre de la fermeture des sachets, dans un des logements femelles de la fermeture, un fil d'aluminium 7 de petit diamètre. Lorsque l'on désire rendre le sachet inviolable, il suffit de faire passer l'extrémité du sachet fermé sous un équipement de thermo-scellage faisant appel au procédé d'induction à moyenne fréquence approprié. An aluminum wire 7 of small diameter is introduced, at the outlet of the extrusion die or at the time of the implementation of the closure of the sachets, in one of the female housings of the closure. When it is desired to make the sachet inviolable, it suffices to pass the end of the closed sachet under heat-sealing equipment using the appropriate medium frequency induction process.
La figure 2 présente un sachet 10 à fermeture par rabat i1 et colle thermofusible. Figure 2 shows a bag 10 closed by flap i1 and hot melt adhesive.
On désigne par 12 le bord de l'ouverture 13 du sachet qui reçoit le rabat 11. The edge of the opening 13 of the bag which receives the flap 11 is designated by 12.
Le rabat i1 du sachet 10 présente trois étroites bandes 14 de colle, régulièrement espacées et disposées sur toute la longueur du rabat, laissant donc subsister entre elles deux plages 15 sans colle. The flap i1 of the bag 10 has three narrow strips 14 of glue, regularly spaced and arranged over the entire length of the flap, thus leaving between them two areas 15 without glue.
Sur la bande 14 centrale, on applique un ruban d'aluminium 16 qui dépasse latéralement de ladite bande, au-dessus des plages 15. On the central strip 14, an aluminum strip 16 is applied which projects laterally from the said strip, above the pads 15.
Pour sceller le sachet, on applique le rabat il sur le bord 12 de l'ouverture 13 pour assurer le collage. To seal the bag, the flap is applied to the edge 12 of the opening 13 to ensure bonding.
Ensuite, on provoque le thermo-scellage par induction électromagnétique dans le ruban 16, le scellage se produisant essentiellement au niveau des plages 15.Then, the electromagnetic induction heat-sealing is caused in the ribbon 16, the sealing occurring essentially at the level of the pads 15.
On pourrait également disposer longitudinalement des fils d'aluminium au centre des plages 15, leur mise en place pouvant être assurée, par exemple, par induction, avant l'application de la colle, ou par collage. Aluminum wires could also be placed longitudinally in the center of the pads 15, their positioning being able to be ensured, for example, by induction, before the application of the glue, or by gluing.
Bien entendu, les moyens de fermeture pourraient aussi bien être déposés sur le bord 12 de l'ouverture du sachet. Of course, the closure means could as well be deposited on the edge 12 of the opening of the bag.
Bien que l'invention ait été décrite à propos de formes de réalisation particulières, il est bien entendu qu'elle n'y est nullement limitée et qu'onpeut lui apporter diverses modifications de forme ou de matériau sans pour cela s'éloigner ni de son cadre ni de son esprit. Although the invention has been described with regard to particular embodiments, it is understood that it is in no way limited thereto and that it can make various modifications of shape or material without thereby departing from or its setting nor its spirit.
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8815552A FR2639617B1 (en) | 1988-11-29 | 1988-11-29 | ENCLOSED CLOSURE OR WRAPPING BAG |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8815552A FR2639617B1 (en) | 1988-11-29 | 1988-11-29 | ENCLOSED CLOSURE OR WRAPPING BAG |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2639617A1 true FR2639617A1 (en) | 1990-06-01 |
| FR2639617B1 FR2639617B1 (en) | 1991-03-08 |
Family
ID=9372342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8815552A Expired - Fee Related FR2639617B1 (en) | 1988-11-29 | 1988-11-29 | ENCLOSED CLOSURE OR WRAPPING BAG |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2639617B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5403094A (en) * | 1993-10-06 | 1995-04-04 | Reynolds Consumer Products, Inc. | Reclosable zipper |
| CN108697209A (en) * | 2016-01-20 | 2018-10-23 | 泰斯勤·汤姆斯 | Improved zipper slider system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2978769A (en) * | 1958-07-07 | 1961-04-11 | Talon Inc | Plastic bag or container |
| US3339606A (en) * | 1966-06-14 | 1967-09-05 | Kugler Emanuel | Slide closure |
| US3440696A (en) * | 1965-10-22 | 1969-04-29 | Flexigrip Inc | Sealing fastener |
| GB1235861A (en) * | 1968-06-14 | 1971-06-16 | Heinz Focke | Bag of plastics sheeting, for containing tobacco or the like |
| DE2341452A1 (en) * | 1973-08-16 | 1975-02-27 | Hellmuth Butenuth | Toothless draw fastener for material webs - has two longitudinal suitably shaped strips which force fit into each other |
| WO1987002968A1 (en) * | 1985-11-08 | 1987-05-21 | Kcl Corporation | Reclosable flexible container |
-
1988
- 1988-11-29 FR FR8815552A patent/FR2639617B1/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2978769A (en) * | 1958-07-07 | 1961-04-11 | Talon Inc | Plastic bag or container |
| US3440696A (en) * | 1965-10-22 | 1969-04-29 | Flexigrip Inc | Sealing fastener |
| US3339606A (en) * | 1966-06-14 | 1967-09-05 | Kugler Emanuel | Slide closure |
| GB1235861A (en) * | 1968-06-14 | 1971-06-16 | Heinz Focke | Bag of plastics sheeting, for containing tobacco or the like |
| DE2341452A1 (en) * | 1973-08-16 | 1975-02-27 | Hellmuth Butenuth | Toothless draw fastener for material webs - has two longitudinal suitably shaped strips which force fit into each other |
| WO1987002968A1 (en) * | 1985-11-08 | 1987-05-21 | Kcl Corporation | Reclosable flexible container |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5403094A (en) * | 1993-10-06 | 1995-04-04 | Reynolds Consumer Products, Inc. | Reclosable zipper |
| CN108697209A (en) * | 2016-01-20 | 2018-10-23 | 泰斯勤·汤姆斯 | Improved zipper slider system |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2639617B1 (en) | 1991-03-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |