EP0668221B1 - Process for producing a sealed joint - Google Patents
Process for producing a sealed joint Download PDFInfo
- Publication number
- EP0668221B1 EP0668221B1 EP19950420042 EP95420042A EP0668221B1 EP 0668221 B1 EP0668221 B1 EP 0668221B1 EP 19950420042 EP19950420042 EP 19950420042 EP 95420042 A EP95420042 A EP 95420042A EP 0668221 B1 EP0668221 B1 EP 0668221B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- strip
- intended
- backing
- container
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31D—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
- B31D1/00—Multiple-step processes for making flat articles ; Making flat articles
- B31D1/0018—Multiple-step processes for making flat articles ; Making flat articles the articles being pull-tap closure discs for bottles, jars or like containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D51/00—Closures not otherwise provided for
- B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
- B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2251/00—Details relating to container closures
- B65D2251/0003—Two or more closures
- B65D2251/0006—Upper closure
- B65D2251/0015—Upper closure of the 41-type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2251/00—Details relating to container closures
- B65D2251/0003—Two or more closures
- B65D2251/0068—Lower closure
- B65D2251/0093—Membrane
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
- B65D2577/10—Container closures formed after filling
- B65D2577/20—Container closures formed after filling by applying separate lids or covers
- B65D2577/2041—Pull tabs
- B65D2577/205—Pull tabs integral with the closure
Definitions
- the invention relates to a method for producing a sealable seal, intended to allow the closure of a container with closure by cap or capsule. It also concerns sealable joints obtained by this process.
- the role of the seal is first of all to confer an inviolability on the container before first opening. In addition, it seals container primary vis-à-vis the outside. In addition, he must develop certain compatibility properties with the content it is supposed to isolate from the outside, and for example be food grade when the content is food.
- the support is intended to absorb the tolerances between the bottom of the capsule and / or cap and the upper part of the neck of the container, and in addition, to ensure secondary sealing, as soon as the cover has been opened or removed. It is therefore likely to ensure some compression with memory effect to precisely allow to absorb these tolerances.
- the support is temporarily secured to the cover with a temporary bonding adhesive.
- adhesive is well known for this application and is generally consisting of glue, or microcrystalline wax or other compounds likely to fulfill the same function.
- sealable joints of the type in question are mainly of two types.
- the first type is a joint without a tongue so that the cover is difficult to tear off or remove after its positioning at the upper edge of the container neck.
- the invention proposes a type of seal that can be sealed in which only the cover is provided with a tear-off tab. It offers also a method for producing such a seal.
- the invention consists in starting from a strip assembly likely to form the basis of sealable joints, to make first of all undergo a precut at the level of the only support strip, corresponding to the shape of the subsequent joints, then to remove, following this precuts the "skeleton", that is to say all the falls of the strip constituting the support, so as to obtain a striped strip consisting of a substantially rectangular strip corresponding to the strip within which the only lids are made, at the level of which appear the future supports of the joints according to their shape definitive, then proceed to cut the whole, directly above said joints, according to the desired shape of the lids, that is, by providing these with a tab.
- the positioning of the strip ribbing at the cutting member takes place after centering pre-cut supports at the cutting member, this centering being advantageously carried out by means of a cell wedging, for example on the thickness of the support relative to the strip at within which the only lids are produced, this timing being effected advantageously at the level of the inter-support zones of the strip ragged.
- This calibration can also be carried out in relation to the appearance of surface of the pre-cut support, or even at a level mark on the strip for this purpose.
- the invention also relates to a sealable joint for sealing. of a container with closure by stopper or capsule, comprising a support intended to be positioned at the bottom of the stopper or the capsule and a operculum, temporarily secured to the support before putting it on in place within the cap, and at the lid of the container. It is characterized in that the cover comprises an extension intended to constitute the pull-out tab of the lid when the first opening of the container.
- the joints thus produced, sealable and advantageously heat sealable can be used for many applications, especially in the food, cosmetic, chemical fields, pharmaceutical, etc., according to an easy implementation, while preserving the required inviolability conditions, further facilitated by uprooting easy to seal.
- Figure 1 is a schematic plan view of a joint according to the invention.
- Figure 2 is a cross-sectional view of Figure 1.
- FIG. 3 is a schematic representation of a strip of the material of the seal obtained after assembly by adhesive with temporary connection of the support to the cover, of which FIG. 4 is a view in cross section.
- Figure 5 is a view similar to Figure 3 after pre-cutting, of which Figure 6 is a cross-sectional view.
- FIG. 7 is a view similar to FIGS. 3 and 5 after weeding
- Figure 8 is a sectional view.
- Figure 9 is a representation of the strip after cutting final of the cover, of which Figure 2 is a representation cross section.
- Figure 10 is a schematic representation of an installation likely to carry out the weeding of the strip in accordance with the invention.
- the seal bearing the general reference (1) in FIG. 1 is heat sealable by induction, i.e. it has at least one film made of a dielectric material, capable of transforming high frequency waves in thermal energy, to allow the rise in temperature of a thermo-plastic film associated with it, to allow its softening and sealing on the upper edge the neck of a container.
- Such a seal (1) is in fact intended to allow the obturation and the tightness of a container, the closure of which is obtained by means a capsule or stopper, itself screwed or clipped at the neck of said container.
- Such a sealable joint basically consists of two parts, namely respectively a support (5) and a cover (2), the support / cover assembly being temporarily secured by means temporary bonding adhesive (6) (see Figure 2).
- the support (5) is intended to be inserted, in particular by force, at the bottom of the closure cap. As already said, it has a role in absorbing tolerances between the bottom of the capsule on the one hand and the upper part of the container neck on the other hand, and, is also intended to ensure a secondary tightness towards the outside, when the cover has been removed, i.e. after first use or first opening of said container.
- This support with a typical thickness of between 0.5 and 4 mm, can be made of expanded polyethylene or another material compressible with recovery memory, possibly fitted on its two sides of a polypropylene or other film, in order to give it a some rigidity. It can also be made of cardboard, or even cardboard added with plastic foam, or be made of polystyrene, the examples thus indicated are in no way limiting but purely exemplary.
- the cover basically comprises according to the invention a tongue (4) extending it, intended to allow the tearing off of said seal when the container is used for the first time is sealed.
- This seal which is therefore sealed and in particular heat-sealed on the upper edge of the container neck is primarily intended to ensure the inviolability of the contents of the container.
- it also provides a primary seal as long as said container was not opened for the first time.
- This cover must also be compatible, either with the content of the container, especially when it is food, either with the container itself, depending on whether it is made of glass, or of material plastic.
- this joint also includes a film made of a material dielectric for transforming high frequency waves (typically 20 kilohertz) that it receives in thermal energy, intended for soften the plastic film, positioned on its face in manhole cover to allow sealing.
- a film made of a material dielectric for transforming high frequency waves (typically 20 kilohertz) that it receives in thermal energy, intended for soften the plastic film, positioned on its face in manhole cover to allow sealing.
- high frequency waves typically 20 kilohertz
- the support (5) and the cover (2) are temporarily joined between them in particular either by means of a film, a mesh or dots of temporary bonding adhesive (6), such as glue natural or synthetic, either with micro-crystalline wax advantageously positioned punctually according to a multitude of points, almost uniformly distributed.
- This micro-crystalline wax is advantageously absorbed during heat sealing in a thin film of paper or cardboard respectively associated either with the support (5) or with the cover (2), taking into account its liquefaction.
- a strip of a material intended to constitute the support is first made, for example by extrusion of low density polyethylene, followed an expansion thereof and laminating two polypropylene films, said strip then being stored in the form of a reel.
- a strip of a material intended to constitute the cover is produced by assembling a thermo-plastic film intended to allow subsequent sealing, possibly associated with a film aluminum (9) or even an additional sheet of cardboard paper, intended to absorb the temporary bonding adhesive during heat sealing.
- the constituent complex of the lid can also include a film of parchment paper or equivalent. This tape is also advantageously stored in the form of a reel.
- the two coils are routed to an installation in known itself, intended to allow reversible and temporary joining of the two bands.
- the two strips Prior to their assembly, the two strips are cut to the same width, in order to minimize the losses in falls, in order to adapt them to the working formats of the cutting used in the rest of the process.
- the bands as well cut-outs may contain one or more joints in width, depending on their dimensions.
- the two bands are joined together using an adhesive to temporary bonding, typically glue or micro-crystalline wax, the latter being positioned on the support strip and / or the cover strip, the two strips then being assembled by calendering, the thermoplastic film sealing formed on one of the faces of the seal strip being directed outwards.
- an adhesive to temporary bonding typically glue or micro-crystalline wax
- a strip (7) shown in FIG. 3 is thus obtained and in section in Figure 4.
- This strip (7) is then routed at a cutting tool, typically consisting of a cookie cutter, intended for make pre-cuts (8) (see figure 5), corresponding to the shape and the dimension of the support (5) of the final joint.
- a cutting tool typically consisting of a cookie cutter
- pre-cuts (8) see figure 5
- These precuts (8), as well that can be seen in Figure 6, are limited to the single support and do not affect the strip (9), that the cutting tool comes outcrop.
- the strip (7) thus produced and provided with these precuts (8) is routed to a facility (16) called weeding, and materialized in FIG. 10, intended to make it possible to remove from said strip the "skeleton" (12) ie the periphery of the supports (5) defined by the pre-cuts (8), so as to obtain a striped strip (11) shown in Figure 7.
- This installation (16) firstly comprises a first roller at which the strip (7) fitted with its precuts (8) is mounted, then a second roller (15) at which the skeleton (12) is wound, and finally a third roller (14) at which the ribbed strip (11) is wound, the position materialized by the letter A corresponding to the ideal position for removing the circumference or skeleton (12), the position materialized by the letter B being the limit position for removal of said skeleton, beyond which the removal of said skeleton is no longer carried out under good conditions.
- weeding i.e. the removal of the skeleton (12) is done manually, then, once the roller (15) has started, it takes place automatically, speed and tension being adjusted of course, programmable.
- the strip (11) thus ragged is then routed at a another cutting member, typically of the punch-die type, or a another cookie cutter, intended to produce, directly above the supports (5) the cutting of the single cover strip (9), i.e. corresponding substantially the same shape and size as the supports (5) but further comprising cutting the tongue (4), and this in the extension of the cover itself.
- a another cutting member typically of the punch-die type, or a another cookie cutter, intended to produce, directly above the supports (5) the cutting of the single cover strip (9), i.e. corresponding substantially the same shape and size as the supports (5) but further comprising cutting the tongue (4), and this in the extension of the cover itself.
- This cutting is carried out after prior centering of the cutting at the level of the supports (5) already cut, for example by means of a photoelectric cell detecting the variation in thickness in the inter-support zone with respect to the strip (9).
- Cutting the shape of the cover may slightly exceed the dimension of the support, thus materializing a coplanar crown (3) with the cover (2) itself, which may further possibly facilitate the sealing operation. However, it may correspond to the support dimension.
- the seal is placed directly at the level of the capsule during its cutting, the cutting member being in this case provided a piston, ensuring the positioning of the seal made at the bottom of said capsule.
- the joint obtained turns out to be easier to install, since no tab has to be positioned at the bottom of the capsule plugging, and also allows the cap to be torn off also much easier.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Description
L'invention concerne un procédé pour la réalisation d'un joint scellable, destiné à permettre l'obturation d'un récipient à fermeture par bouchon ou capsule. Elle concerne également les joints scellables obtenus par ce procédé.The invention relates to a method for producing a sealable seal, intended to allow the closure of a container with closure by cap or capsule. It also concerns sealable joints obtained by this process.
De manière aujourd'hui traditionnelle, l'obturation de récipients par bouchon préalablement à leur première ouverture est effectuée au moyen d'un joint scellable, notamment thermiquement, et plus spécifiquement d'une part, par la coopération d'un opercule, mis en place sur tout le pourtour du rebord supérieur du col du récipient, scellant de la sorte le récipient vis à vis de l'extérieur, et d'autre part, par un support, généralement plus épais, inséré au fond du bouchon, celui-ci venant se visser ou se dipser à l'extrémité supérieure du col dudit récipient.In the traditional way today, closing containers by plug prior to their first opening is carried out at by means of a sealable seal, in particular thermally, and more specifically on the one hand, through the cooperation of a seal, put in place all around the top edge of the container neck, sealing the so the container vis-à-vis the outside, and on the other hand, by a support, generally thicker, inserted at the bottom of the cap, the latter coming screw or dip at the upper end of the neck of said container.
Le rôle de l'opercule est tout d'abord de conférer une inviolabilité au récipient avant sa première ouverture. En outre, il assure l'étanchéité primaire du récipient vis à vis de l'extérieur. De plus, il doit développer certaines propriétés de compatibilité avec le contenu qu'il est censé isoler de l'extérieur, et par exemple être de qualité alimentaire dès lors que le contenu est alimentaire.The role of the seal is first of all to confer an inviolability on the container before first opening. In addition, it seals container primary vis-à-vis the outside. In addition, he must develop certain compatibility properties with the content it is supposed to isolate from the outside, and for example be food grade when the content is food.
Le support quant à lui est destiné à absorber les tolérances entre le fond de la capsule et/ou du bouchon et la partie supérieure du col du récipient, et en outre, d'assurer l'étanchéité secondaire, dès lors que l'opercule a été ouvert ou enlevé. Il est donc susceptible d'assurer une certaine compression avec effet mémoire pour justement permettre d'absorber ces tolérances.The support is intended to absorb the tolerances between the bottom of the capsule and / or cap and the upper part of the neck of the container, and in addition, to ensure secondary sealing, as soon as the cover has been opened or removed. It is therefore likely to ensure some compression with memory effect to precisely allow to absorb these tolerances.
De manière connue, et préalablement à la mise en place du joint au niveau de la capsule ou du bouchon, le support est temporairement solidarisé à l'opercule au moyen d'un adhésif à liaison temporaire. Un tel adhésif est bien connu pour cette application et est généralement constitué de colle, ou de cire microcristalline ou d'autres composés susceptibles de remplir la même fonction.In a known manner, and prior to the installation of the seal at level of the capsule or cap, the support is temporarily secured to the cover with a temporary bonding adhesive. Such adhesive is well known for this application and is generally consisting of glue, or microcrystalline wax or other compounds likely to fulfill the same function.
A ce jour, les joints scellables du type en question sont principalement de deux types. Le premier type est un joint dépourvu de languette de sorte que, l'opercule est difficilement arrachable ou enlevable après sa mise en place au niveau du bord supérieur du col du récipient.To date, sealable joints of the type in question are mainly of two types. The first type is a joint without a tongue so that the cover is difficult to tear off or remove after its positioning at the upper edge of the container neck.
Afin de pallier cet inconvénient, on a proposé de munir la totalité du joint, c'est à dire l'ensemble support et opercule, d'une languette. De fait et compte-tenu de l'épaisseur relative du support, on aboutit dans la plupart des cas à un positionnement incorrect du joint complet au fond du couvercle de la capsule, aboutissant en outre à une fermeture non étanche du récipient.In order to overcome this drawback, it has been proposed to provide all of the seal, that is to say the support and cover assembly, of a tongue. Of fact and given the relative thickness of the support, we end up in the most cases with incorrect positioning of the complete seal at the bottom of the capsule cover, further leading to a non-closing waterproof container.
On a alors proposé de réaliser des joints constitués du support et de l'opercule, mais non solidarisés l'un à l'autre. De fait, on procède tout d'abord à la mise en place, par exemple par conduction thermique, de l'opercule au niveau du rebord supérieur du col du récipient. Puis, on positionne le support seul au fond de la capsule ou du bouchon. On procède donc ainsi en deux étapes distinctes, puisque support et opercule sont totalement indépendants l'un de l'autre. L'inconvénient majeur de cette technique repose d'une part, sur sa plus grande complexité de mise en oeuvre, et d'autre part, l'augmentation prohibitive des coûts de réalisation de l'operculage et du bouchage, nécessitant en effet la mise en place d'une machine supplémentaire sur la ligne de fonctionnement et partant, rédhibitoire pour une industrialisation efficace et rentable.It was then proposed to produce seals consisting of the support and the cover, but not secured to each other. In fact, we do everything first to the establishment, for example by thermal conduction, of the seal at the upper edge of the container neck. Then, we positions the support alone at the bottom of the capsule or stopper. We therefore proceeds in two distinct steps, since support and seal are completely independent of each other. The major disadvantage of this technique is based on the one hand, on its greater complexity of setting on the other hand, and the prohibitive increase in the costs of sealing and capping, in fact requiring setting place of an additional machine on the operating line and therefore, prohibitive for efficient and profitable industrialization.
De fait, l'invention propose un type de joint scellable, dans lequel seul l'opercule est muni d'une languette d'arrachage. Elle propose également un procédé pour la réalisation d'un tel joint. In fact, the invention proposes a type of seal that can be sealed in which only the cover is provided with a tear-off tab. It offers also a method for producing such a seal.
Ce procédé pour la réalisation d'un joint scellable pour l'obturation d'un récipient à fermeture par bouchon ou capsule consiste :
- tout d'abord, à réaliser une première bande, dite bande-support, destinée à permettre la réalisation d'une pluralité de supports de joint, lesdits supports étant destinés à être positionnés au fond de la capsule ou du bouchon ;
- puis à réaliser une seconde bande, dite bande-opercule, destinée à permettre la réalisation d'une pluralité d'opercules, destinés à être scellés sur le rebord supérieur du col du récipient ;
- puis à solidariser réversiblement la bande-support à la bande-opercule au moyen d'un adhésif à liaison temporaire.
- firstly, to produce a first strip, called the support strip, intended to allow the production of a plurality of seal supports, said supports being intended to be positioned at the bottom of the capsule or of the stopper;
- then to produce a second strip, known as a cover strip, intended to allow the production of a plurality of covers, intended to be sealed on the upper rim of the neck of the container;
- then reversibly securing the support strip to the cover strip using a temporary bonding adhesive.
Il se caractérise en ce que :
- l'ensemble ainsi obtenu est soumis à l'action d'un organe de découpe, destiné à prédécouper une pluralité de supports au seul sein de la bande-support selon la forme et les dimensions souhaitées du support de joint ;
- puis à faire subir à la bande ainsi obtenue munie de ses prédécoupes un échenillage, destiné à ôter de ladite bande-support le pourtour des supports, pourtour constitué par le reste de la bande constitutive du support entourant les prédécoupes ;
- et enfin à soumettre la bande échenillée ainsi obtenue à l'action d'un organe de découpe destiné à individualiser les joints proprement dits, par découpe de la bande-opercule, sensiblement à l'aplomb des pré-découpes du support, selon les dimensions desdites prédécoupes du support au ménagement près pour chacun des joints d'un prolongement, destiné à faire office de languette de préhension et d'arrachage dudit opercule, lorsque ce dernier est mis en place au niveau du col du récipient.
- the assembly thus obtained is subjected to the action of a cutting member, intended to precut a plurality of supports within the support strip alone according to the shape and the desired dimensions of the seal support;
- then subjecting the strip thus obtained provided with its precuts a weeding, intended to remove from said support band the periphery of the supports, periphery constituted by the rest of the constituent band of the support surrounding the precuts;
- and finally to subject the ribbed strip thus obtained to the action of a cutting member intended to individualize the joints themselves, by cutting the strip-seal, substantially in line with the pre-cutouts of the support, according to the dimensions said precuts of the support close to each of the joints of an extension, intended to act as a gripping and tearing tab of said cover, when the latter is put in place at the neck of the container.
En d'autres termes, l'invention consiste à partir d'une bande assemblée susceptible de constituer la base de joints scellables, de faire tout d'abord subir une prédécoupe au niveau de la seule bande support, correspondant à la forme des joints ultérieurs, puis à enlever, suite à cette prédécoupe le "squelette", c'est à dire l'ensemble des chutes de la bande constitutive du support, de telle sorte à obtenir une bande échenillée constituée par une bande sensiblement rectangulaire correspondant à la bande au sein de laquelle sont réalisés les seuls opercules, au niveau de laquelle apparaíssent les supports futurs des joints selon leur forme définitive, puis à procéder à la découpe de l'ensemble, à l'aplomb desdits joints, selon la forme souhaitée des opercules, c'est à dire, en munissant ceux-ci d'une languette.In other words, the invention consists in starting from a strip assembly likely to form the basis of sealable joints, to make first of all undergo a precut at the level of the only support strip, corresponding to the shape of the subsequent joints, then to remove, following this precuts the "skeleton", that is to say all the falls of the strip constituting the support, so as to obtain a striped strip consisting of a substantially rectangular strip corresponding to the strip within which the only lids are made, at the level of which appear the future supports of the joints according to their shape definitive, then proceed to cut the whole, directly above said joints, according to the desired shape of the lids, that is, by providing these with a tab.
De la sorte, ce procédé relativement simple à mettre en oeuvre, sans nécessiter d'opération supplémentaire, permet d'obtenir des joints dont seul l'opercule est muni d'une languette, ce que l'on ne savait faire jusqu'alors.In this way, this relatively simple process to implement, without require additional operation, provides seals which only the cover has a tab, which we could not do until then.
Avantageusement et en pratique, le positionnement de la bande échenillée au niveau de l'organe de découpe s'effectue après centrage préalable des supports prédécoupés au niveau de l'organe de découpe, ce centrage étant avantageusement effectué au moyen d'une cellule se calant, par exemple sur l'épaisseur du support par rapport à la bande au sein de laquelle sont réalisés les seuls opercules, ce calage s'effectuant avantageusement au niveau des zones inter-supports de la bande échenillée. Ce calage peut également s'effectuer par rapport à l'aspect de surface du support prédécoupé, ou encore au niveau d'un repère ménagé sur la bande-opercule à cet effet.Advantageously and in practice, the positioning of the strip ribbing at the cutting member takes place after centering pre-cut supports at the cutting member, this centering being advantageously carried out by means of a cell wedging, for example on the thickness of the support relative to the strip at within which the only lids are produced, this timing being effected advantageously at the level of the inter-support zones of the strip ragged. This calibration can also be carried out in relation to the appearance of surface of the pre-cut support, or even at a level mark on the strip for this purpose.
L'invention concerne également un joint scellable pour l'obturation d'un récipient à fermeture par bouchon ou capsule, comprenant un support destiné à être positionné au fond du bouchon ou de la capsule et un opercule, temporairement solidarisé au support préalablement à sa mise en place au sein du bouchon, et à l'operculage de récipient. Il se caractérise en ce que l'opercule comporte un prolongement destiné à constituer la languette d'arrachage de l'opercule lors de la première ouverture du récipient.The invention also relates to a sealable joint for sealing. of a container with closure by stopper or capsule, comprising a support intended to be positioned at the bottom of the stopper or the capsule and a operculum, temporarily secured to the support before putting it on in place within the cap, and at the lid of the container. It is characterized in that the cover comprises an extension intended to constitute the pull-out tab of the lid when the first opening of the container.
De la sorte, les joints ainsi réalisés, scellables et avantageusement thermo-scellables, peuvent être utilisés pour de nombreuses applications, notamment dans les domaines alimentaire, cosmétique, chimique, pharmaceutique, etc., selon une mise en oeuvre aisée, tout en préservant les conditions d'inviolabilité requises, facilitées en outre par un arrachage aisé de l'opercule.In this way, the joints thus produced, sealable and advantageously heat sealable, can be used for many applications, especially in the food, cosmetic, chemical fields, pharmaceutical, etc., according to an easy implementation, while preserving the required inviolability conditions, further facilitated by uprooting easy to seal.
La manière dont l'invention peut être réalisée et les avantages qui en découlent ressortiront mieux de l'exemple de réalisation qui suit donné à titre indicatif et non limitatif à l'appui des figures annexées.The manner in which the invention can be realized and the advantages which will emerge more clearly from the example of embodiment which follows given as an indication and not limiting in support of the appended figures.
La figure 1 est une représentation schématique en plan d'un joint conforme à l'invention.Figure 1 is a schematic plan view of a joint according to the invention.
La figure 2 est une vue en coupe transversale de la figure 1.Figure 2 is a cross-sectional view of Figure 1.
La figure 3 est une représentation schématique d'une bande du matériau constitutif du joint obtenu après assemblage par adhésif à liaison temporaire du support à l'opercule, dont la figure 4 est une vue en coupe transversale.Figure 3 is a schematic representation of a strip of the material of the seal obtained after assembly by adhesive with temporary connection of the support to the cover, of which FIG. 4 is a view in cross section.
La figure 5 est une vue analogue à la figure 3 après pré-découpe, dont la figure 6 est une vue en coupe transversale.Figure 5 is a view similar to Figure 3 after pre-cutting, of which Figure 6 is a cross-sectional view.
La figure 7 est une vue analogue aux figures 3 et 5 après échenillage, dont la figure 8 est une vue en coupe.FIG. 7 is a view similar to FIGS. 3 and 5 after weeding, Figure 8 is a sectional view.
La figure 9 est une représentation de la bande après découpe définitive de l'opercule, dont la figure 2 est une représentation transversale en coupe.Figure 9 is a representation of the strip after cutting final of the cover, of which Figure 2 is a representation cross section.
La figure 10 est une représentation schématique d'une installation susceptible de réaliser l'échenillage de la bande conformément à l'invention. Figure 10 is a schematic representation of an installation likely to carry out the weeding of the strip in accordance with the invention.
On a représenté sur la figure 1 un joint scellable, notamment thermo-scellable conformément à l'invention. Selon une caractéristique avantageuse, le joint portant la référence générale (1) sur la figure 1 est thermoscellable par induction, c'est à dire qu'il comporte au moins un film réalisé en un matériau diélectrique, susceptible de transformer des ondes haute fréquence en énergie thermique, afin de permettre l'élévation de température d'un film thermo-plastique qui lui est associé, pour permettre son ramolissement et son scellage sur le bord supérieur du col d'un récipient.There is shown in Figure 1 a sealable seal, in particular heat-sealable according to the invention. According to a characteristic advantageous, the seal bearing the general reference (1) in FIG. 1 is heat sealable by induction, i.e. it has at least one film made of a dielectric material, capable of transforming high frequency waves in thermal energy, to allow the rise in temperature of a thermo-plastic film associated with it, to allow its softening and sealing on the upper edge the neck of a container.
Un tel joint (1) est en effet destiné à permettre l'obturation et l'étanchéité d'un récipient, dont la fermeture est obtenue au moyen d'une capsule ou bouchon, elle-même vissée ou clipsée au niveau du col dudit récipient.Such a seal (1) is in fact intended to allow the obturation and the tightness of a container, the closure of which is obtained by means a capsule or stopper, itself screwed or clipped at the neck of said container.
Un tel joint scellable est fondamentalement constitué de deux parties, à savoir respectivement un support (5) et un opercule (2), l'ensemble support/opercule étant solidarisé temporairement au moyen d'un adhésif à liaison temporaire (6) (voir figure 2).Such a sealable joint basically consists of two parts, namely respectively a support (5) and a cover (2), the support / cover assembly being temporarily secured by means temporary bonding adhesive (6) (see Figure 2).
Le support (5) est destiné à être inséré, notamment en force, au fond de la capsule de bouchage. Comme déjà dit, il a un rôle d'absorption des tolérances entre le fond de la capsule d'une part et la partie supérieure du col du récipient d'autre part, et, est également destiné à assurer une étanchéité secondaire vis à vis de l'extérieur, lorsque l'opercule a été enlevé, c'est à dire après la première utilisation ou première ouverture dudit récipient.The support (5) is intended to be inserted, in particular by force, at the bottom of the closure cap. As already said, it has a role in absorbing tolerances between the bottom of the capsule on the one hand and the upper part of the container neck on the other hand, and, is also intended to ensure a secondary tightness towards the outside, when the cover has been removed, i.e. after first use or first opening of said container.
Ce support, d'une épaisseur typique compris entre 0,5 et 4 mm, peut être réalisé en polyéthylène expansé ou en un autre matériau compressible avec mémoire de reprise, éventuellement muni sur ses deux faces d'un film de polypropylène ou autre, afin de lui conférer une certaine rigidité. Il peut également être réalisé en carton, voire en carton additionné de mousse plastique, ou encore être réalisé en polystyrène, les exemples ainsi indiqués n'étant nullement limitatifs mais purement exemplatifs.This support, with a typical thickness of between 0.5 and 4 mm, can be made of expanded polyethylene or another material compressible with recovery memory, possibly fitted on its two sides of a polypropylene or other film, in order to give it a some rigidity. It can also be made of cardboard, or even cardboard added with plastic foam, or be made of polystyrene, the examples thus indicated are in no way limiting but purely exemplary.
L'opercule comporte fondamentalement selon l'invention une languette (4) le prolongeant, destinée à permettre l'arrachage dudit opercule lors de la première utilisation du récipient au niveau duquel il est scellé. Cet opercule, qui est donc scellé et notamment thermoscellé sur le bord supérieur du col du récipient, est destiné en premier lieu à assurer l'inviolabilité du contenu du récipient. En outre, de par son scellement, il assure également une étanchéité primaire aussi longtemps que ledit récipient n'a pas été ouvert pour la première fois.The cover basically comprises according to the invention a tongue (4) extending it, intended to allow the tearing off of said seal when the container is used for the first time is sealed. This seal, which is therefore sealed and in particular heat-sealed on the upper edge of the container neck is primarily intended to ensure the inviolability of the contents of the container. In addition, by its sealing, it also provides a primary seal as long as said container was not opened for the first time.
Cet opercule doit en outre être compatible, soit avec le contenu du récipient, notamment lorsque celui-ci est alimentaire, soit avec le récipient lui-même, selon que celui-ci est réalisé en verre, ou en matière plastique.This cover must also be compatible, either with the content of the container, especially when it is food, either with the container itself, depending on whether it is made of glass, or of material plastic.
De plus, si l'on souhaite que ce joint soit thermo-scellable par induction, il comprend également un film réalisé en un matériau diélectrique destiné à transformer les ondes haute fréquence (typiquement 20 kilohertz) qu'il reçoit en énergie thermique, destinée à ramollir le film réalisé en matière plastique, positionné sur sa face en regard du récipient afin de permettre le scellement. Typiquement, on utilise généralement un film en aluminium, dont l'épaisseur est par exemple comprise entre 20 et 50 micromètres.In addition, if it is desired that this joint be heat-sealable by induction, it also includes a film made of a material dielectric for transforming high frequency waves (typically 20 kilohertz) that it receives in thermal energy, intended for soften the plastic film, positioned on its face in manhole cover to allow sealing. Typically, we generally uses aluminum film, the thickness of which is example between 20 and 50 micrometers.
Dans d'autres applications, dans lequel le joint n'est pas thermo-scellable, on positionne de manière connue soit directement sur le pourtour du bord du col du récipient, soit sur la face de l'opercule destinée à venir s'appliquer sur ledit col, au niveau de la zone de contact, un adhésif destiné à permettre le scellage.In other applications, where the joint is not heat sealable, we position in a known manner either directly on the around the edge of the container neck, or on the face of the lid intended to be applied to said neck, at the level of the contact zone, an adhesive intended to allow sealing.
Enfin, le support (5) et l'opercule (2) sont solidarisés temporairement entre eux notamment soit au moyen d'un film, d'un grillage ou de points d'adhésif à liaison temporaire (6), tel que notamment de la colle naturelle ou synthétique, soit au moyen de cire micro-cristalline positionnée avantageusement ponctuellement selon une multitude de points, à peu près uniformément répartis. Cette cire micro-cristalline est avantageusement absorbée lors du thermo-scellage dans un film mince de papier ou de carton respectivement associé soit au support (5) soit à l'opercule (2), compte tenu de sa liquéfaction.Finally, the support (5) and the cover (2) are temporarily joined between them in particular either by means of a film, a mesh or dots of temporary bonding adhesive (6), such as glue natural or synthetic, either with micro-crystalline wax advantageously positioned punctually according to a multitude of points, almost uniformly distributed. This micro-crystalline wax is advantageously absorbed during heat sealing in a thin film of paper or cardboard respectively associated either with the support (5) or with the cover (2), taking into account its liquefaction.
Il va être maintenant décrit le procédé de réalisation d'un tel joint selon l'invention.There will now be described the process for producing such a joint. according to the invention.
Une bande d'un matériau destiné à constituer le support est d'abord réalisée, par exemple par extrusion du polyéthylène basse densité, suivie d'une expansion de celui-ci et contrecollage de deux films de polypropylène, ladite bande étant ensuite stockée sous la forme d'une bobine.A strip of a material intended to constitute the support is first made, for example by extrusion of low density polyethylene, followed an expansion thereof and laminating two polypropylene films, said strip then being stored in the form of a reel.
Parallèlement, une bande d'un matériau destiné à constituer l'opercule est réalisée par assemblage d'un film thermo-plastique destiné à permettre le scellage ultérieur, éventuellement associée à un film d'aluminium (9) voire, une feuille de papier de carton supplémentaire, destinée à absorber l'adhésif de liaison temporaire lors du thermo-scellage. Dans certaines applications particulières, notamment alimentaires, le complexe constitutif de l'opercule peut également comprendre un film de papier sulfurisé ou équivalent. Cette bande est également avantageusement stockée sous forme de bobine. In parallel, a strip of a material intended to constitute the cover is produced by assembling a thermo-plastic film intended to allow subsequent sealing, possibly associated with a film aluminum (9) or even an additional sheet of cardboard paper, intended to absorb the temporary bonding adhesive during heat sealing. In certain specific applications, in particular food, the constituent complex of the lid can also include a film of parchment paper or equivalent. This tape is also advantageously stored in the form of a reel.
Ces deux bobines sont acheminées au niveau d'une installation en soi connue, destinée à permettre la solidarisation réversible et temporaire des deux bandes. Préalablement à leur assemblage, les deux bandes sont découpées selon une même largeur, dans un souci de minimiser les pertes en chutes, afin de les adapter aux formats de travail des outils de coupe mis en oeuvre dans la suite du procédé. De fait, les bandes ainsi découpées sont susceptibles de pouvoir contenir un ou plusieurs joints en largeur, en fonction de leurs dimensions.These two coils are routed to an installation in known itself, intended to allow reversible and temporary joining of the two bands. Prior to their assembly, the two strips are cut to the same width, in order to minimize the losses in falls, in order to adapt them to the working formats of the cutting used in the rest of the process. In fact, the bands as well cut-outs may contain one or more joints in width, depending on their dimensions.
La solidarisation des deux bandes s'effectue au moyen d'un adhésif à liaison temporaire, typiquement de la colle ou de la cire micro-cristalline, celle-ci étant positionnée sur la bande-support et/ou la bande-opercule, les deux bandes étant ensuite assemblées par calandrage, le film thermoplastique de scellage ménagé sur l'une des faces de la bande-opercule étant dirigé vers l'extérieur.The two bands are joined together using an adhesive to temporary bonding, typically glue or micro-crystalline wax, the latter being positioned on the support strip and / or the cover strip, the two strips then being assembled by calendering, the thermoplastic film sealing formed on one of the faces of the seal strip being directed outwards.
On obtient de la sorte une bande (7) représentée sur la figure 3 et en coupe sur la figure 4. Cette bande (7) est alors acheminée au niveau d'un outil de découpe, typiquement constitué par un emporte-pièce, destiné à effectuer des prédécoupes (8) (voir figure 5), correspondant à la forme et à la dimension du support (5) du joint définitif. Ces prédécoupes (8), ainsi qu'on peut l'observer sur la figure 6, se limitent au seul support et n'affectent pas la bande-opercule (9), que l'outil de découpe vient affleurer.A strip (7) shown in FIG. 3 is thus obtained and in section in Figure 4. This strip (7) is then routed at a cutting tool, typically consisting of a cookie cutter, intended for make pre-cuts (8) (see figure 5), corresponding to the shape and the dimension of the support (5) of the final joint. These precuts (8), as well that can be seen in Figure 6, are limited to the single support and do not affect the strip (9), that the cutting tool comes outcrop.
La bande (7) ainsi réalisée et munie de ces prédécoupes (8) est acheminée au niveau d'une installation (16) dite d'échenillage, et matérialisée sur la figure 10, destinée à permettre d'ôter de ladite bande le "squelette" (12) c'est à dire le pourtour des supports (5) définis par les prédécoupes (8), de telle sorte à obtenir une bande échenillée (11) représentée sur la figure 7. The strip (7) thus produced and provided with these precuts (8) is routed to a facility (16) called weeding, and materialized in FIG. 10, intended to make it possible to remove from said strip the "skeleton" (12) ie the periphery of the supports (5) defined by the pre-cuts (8), so as to obtain a striped strip (11) shown in Figure 7.
Cette installation (16) comprend tout d'abord un premier rouleau au niveau duquel est montée la bande (7) munie de ses prédécoupes (8), puis un second rouleau (15) au niveau duquel est enroulé le squelette (12), et enfin un troisième rouleau (14) au niveau duquel est enroulée la bande échenillée (11), la position matérialisée par la lettre A correspondant à la position idéale d'enlèvement du pourtour ou squelette (12), la position matérialisée par la lettre B étant la position limite d'enlèvement dudit squelette, au dela de laquelle l'enlèvement dudit squelette ne s'effectue plus dans de bonne conditions.This installation (16) firstly comprises a first roller at which the strip (7) fitted with its precuts (8) is mounted, then a second roller (15) at which the skeleton (12) is wound, and finally a third roller (14) at which the ribbed strip (11) is wound, the position materialized by the letter A corresponding to the ideal position for removing the circumference or skeleton (12), the position materialized by the letter B being the limit position for removal of said skeleton, beyond which the removal of said skeleton is no longer carried out under good conditions.
L'amorçage de l'échenillage, c'est à dire de l'enlèvement du squelette (12) s'effectue manuellement, puis, une fois le rouleau (15) amorcé, il s'effectue en automatique, le réglage des vitesses et des tensions étant bien entendu, programmable.The initiation of weeding, i.e. the removal of the skeleton (12) is done manually, then, once the roller (15) has started, it takes place automatically, speed and tension being adjusted of course, programmable.
De la sorte, on obtient (voir figure 8), une base (9) constituée par la bande-opercule, sur laquelle sont positionnés, à intervalle régulier, les supports (5) déjà en forme.In this way, we obtain (see FIG. 8), a base (9) constituted by the strip, on which are positioned, at regular intervals, the supports (5) already in shape.
La bande (11) ainsi échenillée est acheminée alors au niveau d'un autre organe de découpe, typiquement du type poinçon-matrice, ou un autre emporte-pièce, destiné à réaliser, à l'aplomb des supports (5) la découpe de la seule bande-opercule (9), c'est à dire correspondant sensiblement à la même forme et dimension que les supports (5) mais comportant en outre la découpe de la languette (4), et ce dans le prolongement de l'opercule lui-même.The strip (11) thus ragged is then routed at a another cutting member, typically of the punch-die type, or a another cookie cutter, intended to produce, directly above the supports (5) the cutting of the single cover strip (9), i.e. corresponding substantially the same shape and size as the supports (5) but further comprising cutting the tongue (4), and this in the extension of the cover itself.
Cette découpe s'effectue après centrage préalable de l'organe de découpe au niveau des supports (5) déjà découpés, par exemple au moyen d'une cellule photo-électrique détectant la variation d'épaisseur dans la zone inter-support par rapport à la bande (9). This cutting is carried out after prior centering of the cutting at the level of the supports (5) already cut, for example by means of a photoelectric cell detecting the variation in thickness in the inter-support zone with respect to the strip (9).
La découpe de la forme de l'opercule peut légèrement excéder la dimension du support, matérialisant ainsi une couronne (3) coplainaire à l'opercule (2) proprement dit, pouvant en outre éventuellement faciliter l'opération de scellement. Cependant, elle peut correspondre à la dimension du support.Cutting the shape of the cover may slightly exceed the dimension of the support, thus materializing a coplanar crown (3) with the cover (2) itself, which may further possibly facilitate the sealing operation. However, it may correspond to the support dimension.
Dans certains cas, le joint est directement mis en place au niveau de la capsule lors de sa découpe, l'organe de découpe étant dans ce cas muni d'un piston, assurant le positionnement du joint réalisé au fond de ladite capsule.In some cases, the seal is placed directly at the level of the capsule during its cutting, the cutting member being in this case provided a piston, ensuring the positioning of the seal made at the bottom of said capsule.
On obtient donc ainsi directement un joint du type décrit dans les figures 1 et 2 de manière rapide et automatique, sans nécessiter une mise en oeuvre particulièrement lourde.A joint of the type described in the Figures 1 and 2 quickly and automatically, without requiring a setting particularly heavy work.
Parallèlement, le joint obtenu s'avère de mise en place plus aisée, puisqu'aucune languette n'a à être positionnée au fond de la capsule de bouchage, et permet en outre un arrachage de l'opercule également beaucoup plus facile.At the same time, the joint obtained turns out to be easier to install, since no tab has to be positioned at the bottom of the capsule plugging, and also allows the cap to be torn off also much easier.
Claims (7)
- Method for producing a sealable gasket for sealing a container that is to be closed, by a stopper or cap, consisting:first of all, in producing a first strip, called a backing strip, intended to allow a number of gasket backings (5) to be produced, the said backings themselves being intended to be positioned at the closed end of the cap or of the stopper;then in producing a second strip called a film strip (9), intended to allow a number of films (2) to be produced, these being intended to be sealed to the upper edge of the neck of the container;then in reversibly securing these two strips together using an adhesive (6) that forms a temporary bond,
characterized in that:the assembly thus obtained is subjected to the action of a cutting-out member intended to precut a number of backings (5) exclusively within the backing strip, with the shape and size desired for the gasket backing;then in subjecting the strip thus obtained, with its precuts (8) to a cleaning-up operation intended to remove from the said backing strip the material around the edges (12) of the backings, which edging material consists of the leftovers of the constituent backing strip surrounding the precuts (8) defining what will be the backings;and finally in subjecting the cleaned-up strip (11) thus obtained to the action of a cutting-out member intended to individualize the actual gaskets by cutting out the film strip (6) more or less vertically in line with the precuts in the backing, to the size of the said precuts in the backing, the only difference being that for each of the gaskets there is an extension (4) intended to act as a tab that can be gripped for tearing the said film, when the latter is in place on the neck of the container. - Method for producing a sealable gasket according to Claim 1, characterized in that the cleaned-up strip (11) is positioned at the cutting-out member after the precut backings have already been centred at the said cutting-out member.
- Method for producing a sealable gasket according to Claim 2, characterized in that centring is carried out using a cell which looks at the thickness of the precut backing (5) compared with the film strip (9), this looking advantageously taking place at the regions between backings on the cleaned-up strip.
- Method for producing a sealable gasket according to Claim 2, characterized in that centring takes place using a cell looking at the surface appearance of the gasket, or at a mark formed for this purpose on the film strip (9).
- Sealable gasket for sealing a container that is to be closed, by a stopper or cap, comprising a backing (5) intended to be positioned in the closed end of the stopper or of the cap and a film (2) secured temporarily to the backing prior to its placement in the cap, and to the sealing of the container, characterized in that only the film (2) has an extension (4) intended to constitute a tab for tearing off the film when the container is opened for the first time.
- Sealable gasket according to Claim 5, characterized in that it can be sealed by the action of heat.
- Sealable gasket according to Claim 6, characterized in that it can be heat-sealed by induction, and that for this to be possible it comprises a film made of a dielectric material, and especially made of aluminium.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR9402221A FR2716407B1 (en) | 1994-02-22 | 1994-02-22 | Method for producing a sealable seal for closing a container with closure by plug or capsule and sealable seal thus obtained. |
FR9402221 | 1994-02-22 |
Publications (2)
Publication Number | Publication Date |
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EP0668221A1 EP0668221A1 (en) | 1995-08-23 |
EP0668221B1 true EP0668221B1 (en) | 1998-06-10 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19950420042 Expired - Lifetime EP0668221B1 (en) | 1994-02-22 | 1995-02-21 | Process for producing a sealed joint |
Country Status (3)
Country | Link |
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EP (1) | EP0668221B1 (en) |
DE (1) | DE69502849T2 (en) |
FR (1) | FR2716407B1 (en) |
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FR3110557B1 (en) * | 2020-05-19 | 2022-05-20 | Mft Generale De Joints | CASEIN-BASED SEAL AND DOUBLE-PIECE SEAL COMPRISING SUCH SEAL |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US4328057A (en) * | 1980-06-26 | 1982-05-04 | H. S. Crocker Co., Inc. | Method and apparatus for forming windowed pressure sensitive labels |
FR2625136B1 (en) * | 1987-12-29 | 1990-06-01 | Europ Production Sa | PROCESS AND PLANT FOR MANUFACTURING COMPOSITE PLATES |
GB2218682B (en) * | 1988-05-19 | 1991-07-31 | Wallace Business Services Limi | Method for the production of peel-off self adhesive stickers and labels |
-
1994
- 1994-02-22 FR FR9402221A patent/FR2716407B1/en not_active Expired - Fee Related
-
1995
- 1995-02-21 DE DE1995602849 patent/DE69502849T2/en not_active Expired - Fee Related
- 1995-02-21 EP EP19950420042 patent/EP0668221B1/en not_active Expired - Lifetime
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
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DE102007014084B3 (en) * | 2007-03-21 | 2008-07-03 | Alfelder Kunststoffwerke Herm. Meyer Gmbh | Method for manufacturing seal disk, involves piercing continuous holes in sheeting, where holes are perforated at distance that corresponds to distance of seal disk |
DE102008020472A1 (en) | 2008-04-23 | 2009-10-29 | Alfelder Kunststoffwerke Herm. Meyer Gmbh | Device for arranging identical sealing disks of container that is utilized for storing e.g. food, has inner cross sectional surface corresponding to surface of sealing disks with gripping straps, and closure provided at pipe ends |
DE102008020472B4 (en) * | 2008-04-23 | 2009-12-24 | Alfelder Kunststoffwerke Herm. Meyer Gmbh | Device for housing gaskets during transport and method for transporting gaskets |
DE102009016312B3 (en) * | 2009-04-06 | 2010-07-15 | Alfelder Kunststoffwerke Herm. Meyer Gmbh | Sealing washer with tab |
WO2010115811A1 (en) | 2009-04-06 | 2010-10-14 | Alfelder Kunststoffwerke Herm. Meyer Gmbh | Sealing disk having a tab |
DE102010054494B3 (en) * | 2010-12-14 | 2011-10-20 | Alfelder Kunststoffwerke Herm. Meyer Gmbh | Sealing disk for closing opening of container that is utilized for storing e.g. drinks, has layers formed so that layers sealably close withdrawal opening after removal of film and arrangement of layers on sealant layer |
WO2012079971A1 (en) | 2010-12-14 | 2012-06-21 | Alfelder Kunststoffwerke Herm. Meyer Gmbh | Sealing disc for induction sealing a container |
WO2012152622A1 (en) | 2011-05-12 | 2012-11-15 | Alfelder Kunststoffwerke Herm. Meyer Gmbh | Sealing disc comprising a tab |
DE102011106768A1 (en) | 2011-05-12 | 2012-11-15 | Alfelder Kunststoffwerke Herm. Meyer Gmbh | Sealing washer with tab |
DE102011106768B4 (en) | 2011-05-12 | 2018-10-04 | Alfelder Kunststoffwerke Herm. Meyer Gmbh | Sealing washer with tab |
Also Published As
Publication number | Publication date |
---|---|
FR2716407B1 (en) | 1996-04-12 |
EP0668221A1 (en) | 1995-08-23 |
FR2716407A1 (en) | 1995-08-25 |
DE69502849T2 (en) | 1998-10-08 |
DE69502849D1 (en) | 1998-07-16 |
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