FR2613326A1 - Separable closing strip; method and device for fixing it to a substrate - Google Patents
Separable closing strip; method and device for fixing it to a substrate Download PDFInfo
- Publication number
- FR2613326A1 FR2613326A1 FR8704736A FR8704736A FR2613326A1 FR 2613326 A1 FR2613326 A1 FR 2613326A1 FR 8704736 A FR8704736 A FR 8704736A FR 8704736 A FR8704736 A FR 8704736A FR 2613326 A1 FR2613326 A1 FR 2613326A1
- Authority
- FR
- France
- Prior art keywords
- strip
- ribs
- base
- substrate
- closure
- 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
Classifications
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/72—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by combined operations or combined techniques, e.g. welding and stitching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/024—Thermal pre-treatments
- B29C66/0242—Heating, or preheating, e.g. drying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/112—Single lapped joints
- B29C66/1122—Single lap to lap joints, i.e. overlap joints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
- B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
- B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
- B29C66/83411—Roller, cylinder or drum types
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
- B29C66/83411—Roller, cylinder or drum types
- B29C66/83413—Roller, cylinder or drum types cooperating rollers, cylinders or drums
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
- B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
- B29C66/83411—Roller, cylinder or drum types
- B29C66/83415—Roller, cylinder or drum types the contact angle between said rollers, cylinders or drums and said parts to be joined being a non-zero angle
-
- 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
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
- B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
- B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
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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
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B70/00—Making flexible containers, e.g. envelopes or bags
- B31B70/74—Auxiliary operations
- B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
- B31B70/813—Applying closures
- B31B70/8131—Making bags having interengaging closure elements
- B31B70/8132—Applying the closure elements in the machine direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Making Paper Articles (AREA)
Abstract
Description
BANDE DE FERMETURE SEPARABLE : PROCEDE ET APPAREIL
POUR SA FIXATION SUR UN SUBSTRAT
La présente invention concerne la fixation de bandes de fermeture séparables sur des substrats, et se révèle particulièrement utile dans la fixation de bandes de fermeture séparables en matière plastique profilée sur des films ou des feuilles destinés à la fabrication de sacs.SEPARABLE CLOSURE STRIP: METHOD AND APPARATUS
FOR FIXING TO A SUBSTRATE
The present invention relates to the fixing of separable closure strips on substrates, and proves to be particularly useful in the fixing of separable closure strips of profiled plastic material on films or sheets intended for the manufacture of bags.
On a eu recours à des procédés divers et variés pour la fixation de fermetures séparables, (appelées aussi, quelquefois, fermetures refermables), et en particulier en matière plastique extrudée, sur des substrats tels que des films ou des feuilles destinés à la fabrication de sacs ou autres objets. A titre d'exemple, en ce qui concerne la technologie de fabrication des sacs, on peut se référer aux brevets des Etats-Unis suivants
- Le brevet redélivré n-26 991 décrit l'extru sion en une seule pièce d'une fermeture séparable et d'une feuille de paroi de sac.Various and varied methods have been used for fixing separable closures (also sometimes called closable closures), and in particular in extruded plastic, on substrates such as films or sheets intended for the manufacture of bags or other items. By way of example, with regard to the technology for making bags, reference may be made to the following United States patents
- The reissued patent n-26 991 describes the extrusion in one piece of a separable closure and of a bag wall sheet.
- Le brevet n4 279 677 décrit l'application de la bande de fermeture fraîchement extrudée sur un film préfabriqué qui est préchauffé avant de recevoir la bande de fermeture extrudée, qui se trouve encore dans un état de fusion suffisant pour adhérer au substrat. - Patent No. 4 279 677 describes the application of the freshly extruded closure strip on a prefabricated film which is preheated before receiving the extruded closure strip, which is still in a sufficient melting state to adhere to the substrate.
- Le brevet n4 354 541 décrit des fermetures séparables munies de nervures sur l'embase en tant qu'éléments d'espacement pour assurer le maintien d'une couche uniforme d'adhésif entre l'embase de la fermeture et un substrat. Les nervures n'ont aucun rôle dans la condition fermée de la fermeture. - Patent n4 354 541 describes separable closures provided with ribs on the base as spacers to ensure the maintenance of a uniform layer of adhesive between the base of the closure and a substrate. The ribs have no role in the closed condition of the closure.
- Le brevet n4 430 070 décrit la fixation de fermetures fusibles sur une feuille fusible compatible, par application de la chaleur de fusion, à travers la feuille, sur l'embase de la fermeture. - Patent n4 430 070 describes the fixing of fusible closures on a compatible fusible sheet, by application of the heat of fusion, through the sheet, to the base of the closure.
Il existe des situations ou aucun des procédés décrits dans les brevets précités ne convient à l'opération de fixation de la bande de fermeture préfabriquée sur la feuille ou film préfabrlqué. Par exemple, lorsque les surfaces de la bande de fermeture et du substrat sont aptes a une fixation par fusion, il se trouve parfois que le substrat ne puisse être chauffé, sans dommage, suffisamment pour adhérer à la bande de fermeture. There are situations where none of the methods described in the aforementioned patents is suitable for the operation of fixing the prefabricated closure strip to the prefabricated sheet or film. For example, when the surfaces of the closure strip and the substrate are suitable for fusion fixing, it sometimes happens that the substrate cannot be heated, without damage, sufficiently to adhere to the closure strip.
Le substrat peut être constitué par un stratifié ou similaire à travers lequel la chaleur ou l'énergie de fu sion ne peuvent pratiquement pas être transférées. Lorsque l'on a une feuille de forte épaisseur, il arrive qu'il n'est pas possible d'appliquer la chaleur ou l'énergie de fusion à travers celle-ci sans ralentir la production ou sans déformer ou encore sans affaiblir la feuille elle-même, même dans le cas où la feuille de forte épaisseur et la bande de fermeture sont compatibles du point de vue de la fusion. Dans certains cas, l'application d'une chaleur suffisante pour souder l'embase de la bande de fermeture sur le substrat peut entrainer des détériorations sur les profilés d'imbrication de la bande, situés sur son embase.The substrate may consist of a laminate or the like through which heat or energy of fusion can practically not be transferred. When you have a very thick sheet, sometimes it is not possible to apply heat or fusion energy through it without slowing production or without deforming or weakening the sheet itself, even in the case where the very thick sheet and the closure strip are compatible from the point of view of fusion. In some cases, the application of sufficient heat to weld the base of the closure strip to the substrate may cause damage to the interlocking profiles of the strip, located on its base.
Un but important de la présente invention est donc de fournir une bande de fermeture séparable en matière plastique comportant des moyens nouveaux et perfectionnés pour sa fixation sur un substrat. An important object of the present invention is therefore to provide a separable closure strip made of plastic material comprising new and improved means for fixing it to a substrate.
Un autre but de l'invention est d'assurer une nouvelle fixation par fusion améliorée d'une bande de fermeture séparable en matière plastique sur un substrat, tout en évitant de détériorer ou de déformer la bande de fermeture ou son substrat par un effet nuisible de la chaleur. Another object of the invention is to provide a new and improved fixing by fusion of a separable closure strip of plastic material on a substrate, while avoiding damaging or deforming the closure strip or its substrate by a harmful effect. heat.
Un but complémentaire de l'invention est de fournir un procédé nouveau et perfectionné pour la fixation d'une bande de fermeture séparable en matière plastique sur un substrat. A further aim of the invention is to provide a new and improved method for fixing a separable closure strip of plastic material on a substrate.
D'autres buts, caractéristiques et avantages de l'invention découleront directement de la lecture de la description suivante de modes de réalisation représentatifs, avec référence aux dessins ci-annexés, bien que des variations et modifications puissent être apportées sans s'éloigner de l'esprit et de la portée des concepts nouveaux mis en oeuvre. Other objects, characteristics and advantages of the invention will result directly from reading the following description of representative embodiments, with reference to the attached drawings, although variations and modifications can be made without departing from the invention. spirit and scope of the new concepts implemented.
Dans les dessins
--la figure 1 est une vue isométrique d'une bande de fermeture séparable en matière plastique conforme à l'invention
- la figure 2 est une vue isométrique partielle montrant la structure de la bande de fermeture de la figure 1, fixée sur une feuille ou film de substrat desti né à la fabrication de s.lCS ;;
- la figure 3 est une vue similaire a celle de la figure 1 mais montrant une modification
- la figure 4 est une vue similaire à celle de la figure 2 mais mettant en oeuvre la variante de la figure 3 avec une légère modification du matériau du sac
- la figure 5 est une représentation schématique d'un appareil utile dans un procédé de fabrication de sacs selon la présente invention
- la figure 6 est une vue détaillée en coupe partielle agrandie prise sensiblement selon la ligne VI
VI de la figure 5
- la figure 7 est une vue détaillée en coupe partielle similaire à celle de la figure 6 mais montrant un ensemble modifié de fermeture refermable à glissière ; et
- la figure 8 est une autre vue détaillée en coupe partielle similaire montrant un autre ensemble modifié de fermeture refermable.In the drawings
- Figure 1 is an isometric view of a separable closure strip of plastic according to the invention
- Figure 2 is a partial isometric view showing the structure of the closure strip of Figure 1, fixed on a sheet or film of substrate intended for the manufacture of s.lCS ;;
- Figure 3 is a view similar to that of Figure 1 but showing a modification
- Figure 4 is a view similar to that of Figure 2 but implementing the variant of Figure 3 with a slight modification of the bag material
- Figure 5 is a schematic representation of an apparatus useful in a method of manufacturing bags according to the present invention
- Figure 6 is a detailed view in enlarged partial section taken substantially along line VI
VI of figure 5
- Figure 7 is a detailed view in partial section similar to that of Figure 6 but showing a modified assembly of reclosable zipper; and
- Figure 8 is another detailed view in similar partial section showing another modified assembly of reclosable closure.
Avec référence à la figure 1, la bande 10 de fermeture séparable en matière plastique peut être formée par extrusion d'une matière thermoplastique appropriee telle qu'un copolymère acide d'éthylène, de polypropylène ou de polyéthylène selon ses conditions d'utilisation. Comme cela est montré, la bande de fermeture 10 est à l'état complètement durci. Ceci signifie que la bande 10 a été préfabriquée et durcie jusqu'à un état d'auto-maintien où elle est froide. Dans la forme montrée, la bande de fermeture 10 peut s'engager par imbrication mutuelle dans une bande coopérante identique. With reference to FIG. 1, the separable closure strip 10 of plastic material can be formed by extrusion of a suitable thermoplastic material such as an acid copolymer of ethylene, polypropylene or polyethylene according to its conditions of use. As shown, the closure strip 10 is in the fully cured state. This means that the strip 10 has been prefabricated and hardened to a self-maintaining state where it is cold. In the form shown, the closure strip 10 can engage by mutual nesting in an identical cooperating strip.
La bande de fermeture 10 comprend un corps Il comportant une embase 12 et des profilés faisant saillie sur le côté opposé sous forme de nervures 13 souples ayant une forme générale de crochets, ces nervures sont espacées parallèlement et définissent entre elles des rainures 14 complémentaires aptes à recevoir par imbrication séparable les nervures profilées 13 de la bande complémentaire, en l'occurrence une bande 10 de fermeture refermable en matière plastique profilée identique, comme bien visible sur le dessin. The closure strip 10 comprises a body II comprising a base 12 and profiles projecting on the opposite side in the form of flexible ribs 13 having a general shape of hooks, these ribs are spaced parallel and define between them complementary grooves 14 suitable for receiving by separable nesting the profiled ribs 13 of the complementary strip, in this case a resealable closing strip 10 of identical profiled plastic, as clearly visible in the drawing.
Des moyens nouveaux et perfectionnés sont prévus pour le soudage par fusion de la bande de fermeture 10 sur un substrat 15, comme cela est montré à la figure 2. New and improved means are provided for fusion welding of the closure strip 10 on a substrate 15, as shown in FIG. 2.
Dans ce but, l'embase 12 de la bande est munie de plusieurs nervures 17 présentant entre elles des espacements 18. Dans le présent cas, quatre des nervures 17 sont représentées, mais on peut en prévoir une quantité supérieure ou inférieure, en fonction des dimensions et éventuellement d'autres caractéristiques de la bande de fermeture et du matériau à partir duquel elle est réalisée. Dans l'exemple représénté, les nervures 17 sont de forme généralement rectangulaire en coupe transversale, étant donné qu'il s'agit d'une forme adéquate pour l'extrusion, mais on comprendra que d'autres formes géométriques en section transversale peuvent être adaptées, si on le souhaite pour toute raison particulière.Dans une forme préférée, comme cela est montré, les nervures 17 peuvent être d'une largeur approximativement égale à celle des-espacements 18 et leur hauteur peut être légèrement inférieure à leur largeur. Une considération principale lors de la détermination de la masse par rapport a la relation d'espacement des nervures 17 est de permettre le soudage par fusion des nervures sans transfert important de la température de fusion au corps 11 de la bande de fermeture, et que lorsque les nervures 17 ont été soudées par fusion, il soit possible de les transformer en une couche de liaison 19 entre la bande de fermeture et le substrat 15. Pour l'obtention d'une résistance maximale d'adhérence de la couche 19, les nervures 17 fondues se fondent dans une couche de liaison sensiblement continue entre l'embase 12 et le substrat 15.For this purpose, the base 12 of the strip is provided with several ribs 17 having spacings between them 18. In the present case, four of the ribs 17 are shown, but a greater or less quantity may be provided, depending on the dimensions and possibly other characteristics of the closure strip and of the material from which it is made. In the example shown, the ribs 17 are generally rectangular in cross section, since it is a suitable shape for extrusion, but it will be understood that other geometric shapes in cross section can be adapted, if desired for any particular reason. In a preferred form, as shown, the ribs 17 may be of a width approximately equal to that of the spacings 18 and their height may be slightly less than their width. A main consideration when determining the mass with respect to the spacing relationship of the ribs 17 is to allow fusion welding of the ribs without significant transfer of the melting temperature to the body 11 of the closure strip, and that when the ribs 17 have been welded by fusion, it is possible to transform them into a bonding layer 19 between the closure strip and the substrate 15. In order to obtain maximum adhesion strength of the layer 19, the ribs 17 fuses merge into a substantially continuous bonding layer between the base 12 and the substrate 15.
On comprendra bien entendu que la surface de la feuille 15 ou film de substrat sur laquelle la bande 10 est fixée par la couche de liaison 19 fondue, doit être compatible avec le matériau à partir duquel la bande de fermeture est réalisée. Par exemple, si la bande 10 est réalisée à partir de polyéthylène, la surface de liaison du substrat 15 doit être du polyéthylène. Si la bande 10 est réalisée à partir de polypropylène, la surface de liaison du substrat 15 doit être du polypropylène. Bien que le substrat 15 puisse être un monocouche, on pourra également avoir un stratifié, la surface de liaison comprenant dans ce cas une couche compatible du point de vue de la fusion avec la bande de fermeture 10. It will of course be understood that the surface of the sheet 15 or substrate film on which the strip 10 is fixed by the fused bonding layer 19 must be compatible with the material from which the closure strip is made. For example, if the strip 10 is made from polyethylene, the bonding surface of the substrate 15 must be polyethylene. If the strip 10 is made from polypropylene, the bonding surface of the substrate 15 must be polypropylene. Although the substrate 15 can be a monolayer, it is also possible to have a laminate, the bonding surface in this case comprising a layer compatible from the point of view of fusion with the closure strip 10.
Dans la figure 2, l'ensemble comporte un matériau 20 de fabrication de sacs qui comprend deux feuilles 15 de paroi de sac ou de substrat, dont chacune porte l'une des bandes de fermeture 10, selon une configuration spéculaire complémentaire et située de façon con tigué aux bords longitudinaux libres des feuilles de paroi 15. Sur leurs bords longitudinaux opposés, les deux feuilles 15 peuvent, comme cela est montré, être assemblées au moyen d'un cordon de soudure 22. Sur ses bords libres, l'une des feuilles 15 comporte une languette de tirage 23 qui fait saillie vers l'extérieur par rapport à la bande de fermeture 10 montée sur elle. L'autre feuille 15 comporte une languette de tirage 24 qui fait saillie vers l'extérieur par rapport à la bande de fermeture 10 soudée sur elle.L'une des languettes de tirage 23 et 24, en l'occurrence la languette 24, est de fa çon avantageuse plus courte -que l'autre languette pour faciliter sa préhension lorsque l'on désire ouvrir la fermeture en tirant sur les bandes de fermeture complémentaires 10 pour les éloigner de la relation imbriquée montrée à la figure 1 et les amener dans la relation séparée montrée à la figure 2. In FIG. 2, the assembly comprises a material 20 for making bags which comprises two sheets 15 of wall of bag or substrate, each of which carries one of the closure strips 10, in a complementary specular configuration and located so con tigued to the free longitudinal edges of the wall sheets 15. On their opposite longitudinal edges, the two sheets 15 can, as shown, be assembled by means of a weld bead 22. On its free edges, one of the sheets 15 has a pull tab 23 which projects outwards relative to the closure strip 10 mounted on it. The other sheet 15 has a pull tab 24 which projects outwards relative to the closure strip 10 welded onto it. One of the pull tabs 23 and 24, in this case the tab 24, is advantageously shorter than the other tab to facilitate its gripping when it is desired to open the closure by pulling on the complementary closure strips 10 to move them away from the nested relationship shown in FIG. 1 and bring them into the separate relationship shown in Figure 2.
Les figures 3 et 4 montrent un agencement lége- rement modifié des nervures fusibles 17, la structure restante des bandes 10' de la fermeture étant identique a la représentation de la figure 1. Sur la fermeture 10', les nervures fusibles 17 ne sont situées que le long de la marge de l'embase 12 qui est contiguë au côté de la bande 10' de la fermeture qui se situera sur le côté extérieur de l'embouchure du sac à réaliser à partir de l'ensemble 20' destiné à la fabrication du sac. FIGS. 3 and 4 show a slightly modified arrangement of the fusible ribs 17, the remaining structure of the bands 10 ′ of the closure being identical to the representation of FIG. 1. On the closure 10 ′, the fusible ribs 17 are not located that along the margin of the base 12 which is contiguous to the side of the strip 10 'of the closure which will be located on the outside of the mouth of the bag to be produced from the assembly 20' intended for the manufacture of the bag.
Comme cela est montré, deux des nervures 17 sont situées dans la zone du côté extérieur de l'embase 12, laissant le reste de l'embase 12 sous la forme d'une zone libre 25 qui sera située de façon contiguë au côté intérieur du sac final confectionné à partir de l'ensemble 21, par séparation en sections de. sac. Ainsi, les zones libres 25 permettent à l'une ou aux deux parois de sac 15' de s'écarter de façon rabattable depuis les zones libres 25 de la fermeture, comme cela est montré par le contour en tirets de la figure 4. Ceci confère une résistance supérieure à l'ouverture ou à la séparation de la fermeture à partir de l'intérieur du sac par rapport à la résistance à l'extrémité d'embouchure extérieure du sac lorsque l'on agit sur les languettes de tirage 23' et 24'.As shown, two of the ribs 17 are located in the area on the outside of the base 12, leaving the remainder of the base 12 in the form of a free area 25 which will be located adjacent to the inside of the base. final bag made from set 21, by separation into sections of. bag. Thus, the free zones 25 allow one or both of the bag walls 15 ′ to be folded away from the free zones 25 of the closure, as shown by the dashed outline in FIG. 4. This imparts greater resistance to opening or separating the closure from the inside of the bag compared to the resistance at the outer mouth end of the bag when the pull tabs 23 'are acted upon and 24 '.
Néanmoins, les bandes 10 de la fermeture sont parfaitement soudées au matériau 15' de parois de sac par la couche de liaison 19' au moyen de laquelle les bandes 10' de la fermeture sont fixées sur le matériau 15' de parois de sac par fusion des nervures 17.Nevertheless, the strips 10 of the closure are perfectly welded to the material 15 'of bag walls by the bonding layer 19' by means of which the strips 10 'of the closure are fixed to the material 15' of bag walls by fusion. ribs 17.
L'ensemble 20' destiné à la fabrication des sacs peut comporter la feuille ou le film 15' se présentant d'une seule pièce et replié sur lui-même selon le pli 27 de fermeture solidaire du fond du sac, fournissant ainsi les parois opposées d'un sac. The assembly 20 ′ intended for the manufacture of bags may comprise the sheet or film 15 ′ which is in one piece and folded back on itself according to the closing fold 27 secured to the bottom of the bag, thus providing the opposite walls. of a bag.
La figure 5 montre un exemple d'une forme d'appareil et de procédé pour la réalisation de la bande de fermeture et du substrat à la fois pour les ensembles de bande de fermeture et du substrat 20 ou 20'. FIG. 5 shows an example of a form of apparatus and method for producing the closure strip and the substrate for both the closure strip and substrate 20 or 20 'assemblies.
Pour réaliser l'ensemble 20 selon un mode de réalisation préféré, on prévoit deux rouleaux 28 et 29 de film ou de feuille 15, l'un étant -situé au-dessus et l'autre au-dessous d'une table 30. Dans le cas considéré, le matériau 15 est alimenté à partir du rouleau inférieur 28 sous forme de bande via un rouleau de guidage 30a jusqu'au plan supérieur de la table 30. A mesure que défile la bande 15 sur le rouleau 30a, elle peut être préchauffée au moyen d'un dispositif de chauffage de surface 31 rejettant par exemple l'air chauffé sur la surface longitudinale de la bande 15 qui doit recevoir la bande 10 de la fermeture, afin de faciliter la liaison des nervures 17 soudées par fusion.D'autres agencements de chauffage de la bande j5 peuvent comprendre des moyens de chauffage dirigés entre la jonction de la bande de fermeture et de la feuille ou sur la feuille ellemême, au niveau de la base de la bande de fermeture 10. To produce the assembly 20 according to a preferred embodiment, two rollers 28 and 29 of film or sheet 15 are provided, one being located above and the other below a table 30. In in the case considered, the material 15 is fed from the lower roller 28 in the form of a strip via a guide roller 30a to the upper plane of the table 30. As the strip 15 travels on the roller 30a, it can be preheated by means of a surface heating device 31 for example rejecting the heated air on the longitudinal surface of the strip 15 which must receive the strip 10 of the closure, in order to facilitate the connection of the ribs 17 welded by fusion. other arrangements for heating the strip j5 may include heating means directed between the junction of the closure strip and the sheet or on the sheet itself, at the base of the closure strip 10.
En même temps, la bande de fermeture 10 préfabriquée telle qu'elle ePst représentée à la figure 1 en configuration de bande double imbriquée, est alimentée à partir d'un magasin tel qu'un rouleau ou une bobine d'alimentation 32, via un rouleau 33 de guidage et de tension et ensuite via le moyen de soudage par fusion des nervures tel qu'un rouleau chauffant 34 pour la fusion des nervures 17 sur l'une des bandes de fermeture 10 et un dispositif de soudage par fusion tel qu'un applicateur d'air chaud 35 pour la fusion des nervures 17 sur la bande de fermeture complémentaire.Ensuite, l'ensemble de fermeture à bandes 10 imbriquées dont les nervures 17 se trouvent à l'état fondu, est guidé par un rouleau presseur 37 sur la table 30 dans une relation de soudage sur la bande 15 amenée par le rouleau 28 d'alimentation inférieur, et en même temps, la bande 15 amenée par le rouleau d'alimentation supérieur 29 est entrainée et guidée par le rouleau presseur 37 en vue de son engagement sur l'embase de la bande 10 de fermeture, laquelle, dans le cas illustré, fait face vers le haut par rapport à l'embase faisant face vers le bas de la bande de fermeture 10 complémentaire. Un dispositif de préchauffage tel qu'un réchauffeur d'air 38 préchauffe avantageusement la zone de réception de la bande 15, amenée par le rouleau d'alimentation 29, à mesure que cette bande défile sur la périphérie du rouleau 37 pour fusionner avec la bande de fermeture.At the same time, the prefabricated closure strip 10 as it is shown in FIG. 1 in a double nested strip configuration, is supplied from a magazine such as a roll or a supply reel 32, via a guide and tension roller 33 and then via the fusion welding means of the ribs such as a heating roller 34 for the fusion of the ribs 17 on one of the closure strips 10 and a fusion welding device such as a hot air applicator 35 for the fusion of the ribs 17 on the complementary closure strip. Next, the closure assembly with overlapping strips 10 whose ribs 17 are in the molten state, is guided by a pressure roller 37 on the table 30 in a welding relationship on the strip 15 brought by the lower feed roller 28, and at the same time, the strip 15 brought by the upper feed roller 29 is driven and guided by the pressure roller 37 in view of its engagement on the base of the closure strip 10, which, in the illustrated case, faces upward relative to the base facing downward of the complementary closure strip 10. A preheating device such as an air heater 38 advantageously preheats the zone for receiving the strip 15, brought by the feed roller 29, as this strip runs over the periphery of the roll 37 to merge with the strip closing.
Il est à noter que le rouleau de guidage 33 peut être réglable pour faire varier le contact périphérique avec le rouleau de chauffage 34 et obtenir un effet de fusion optimum des nervures fusibles 17 en fonction des différentes conditions régnant au moment du fonctionnement du système. It should be noted that the guide roller 33 can be adjustable to vary the peripheral contact with the heating roller 34 and obtain an optimum melting effect of the fusible ribs 17 as a function of the different conditions prevailing at the time of operation of the system.
A mesure que l'ensemble 20 défile à partir du rouleau presseur 37, il s'engage sous une barre de pression supérieure 39 qui coopère avec la table 30, laquelle peut servir de barre de pression inférieure. Ceci assure que les couches de liaison 19 fournies par les nervures fondues 17 le long des surfaces d'embase 12 des bandes de fermeture 10 sont en relation soudée parfaite avec les surfaces d'embase des bandes de fermeture et avec la surface de la feuille 15 de substrat contiguë à mesure que durcit la couche de liaison. As the assembly 20 travels from the pressure roller 37, it engages under an upper pressure bar 39 which cooperates with the table 30, which can serve as a lower pressure bar. This ensures that the bonding layers 19 provided by the molten ribs 17 along the base surfaces 12 of the closure strips 10 are in perfect welded relationship with the base surfaces of the closure strips and with the surface of the sheet 15 of contiguous substrate as the tie layer hardens.
La totalité ou une partie des différents rouleaux ou galets peuvent être actionnés de façon coordonnée. Pour faire avancer l'ensemble 20 depuis la table 30, on peut prévoir des rouleaux presseurs d'alimentation 40 actionnés de façon opposée. En aval des rouleaux d'alimentation 40, l'ensemble 20 peut être acheminé directement vers un appareil de fabrication de sacs ou vers un appareil de fabrication et de remplissage de sacs, ou encore le matériau peut être enroulé sur des bobines de distribution. All or part of the different rollers or rollers can be actuated in a coordinated manner. To advance the assembly 20 from the table 30, it is possible to provide supply pressure rollers 40 actuated in opposite directions. Downstream of the feed rollers 40, the assembly 20 can be routed directly to a bag making apparatus or to a bag making and filling apparatus, or else the material can be wound up on distribution coils.
Pour produire l'ensemble 20' dans lequel le film ou la feuille 15' sont entièrement d'une seule pièce, laquelle est ensuite repliée sur elle-même, on peut utiliser les mêmes appareil ou procédé généraux que ceux représentés à titre d'exemple à la figure 5. Dans ce but, seul le rouleau d'alimentation inférieur 28 distribuera la feuille 15' à l'état ouvert et à la bonne largeur. Toutefois, on aura deux des rouleaux 32 d'ali- mentation de bande de fermeture, chaque rouleau portant l'une des -sections accouplées de la bande de fermeture correspondante, espacés axialement l'un de l'autre aux positions relatives souhaitées pour l'alimentation des bandes 10' de la fermeture aux emplacements longitudinaux appropriés sur la bande constituée par la feuille 15'.De même, deux des préchauffeurs 31 seront positionnés de façon appropriée pour préchauffer les zones relativement étroites de la feuille 15' pour recevoir les deux bandes de fermeture 10'. Le rouleau de guidage 33 peut être prolongé ou réalisé en deux parties pour recevoir les deux bandes de fermeture 10'. De la même manière, le rouleau de chauffage 34 peut être prolongé ou réalisé en deux parties pour effectuer la fusion des nervures 17 dans les couches de liaison 19'. De même, le rouleau presseur et de guidage 37 peut être prolongé pour tenir compte de l'espacement des bandes 10' de la fermeture. Bien entendu, le deuxième rouleau 29 d'alimentation de feuille et le préchauffeur 38 seront supprimés. Le reste de l'appareil de traitement demeure identique sauf en ce qui concerne une légère modification pour recevoir l'ensemble 20'. To produce the assembly 20 ′ in which the film or the sheet 15 ′ are entirely in one piece, which is then folded back on itself, the same general apparatus or method can be used as those shown by way of example in Figure 5. For this purpose, only the lower feed roller 28 will distribute the sheet 15 'in the open state and at the correct width. However, there will be two of the rollers 32 for supplying the closure strip, each roller carrying one of the coupled sections of the corresponding closure strip, axially spaced from one another at the desired relative positions for the 'feeding the strips 10' of the closure at the appropriate longitudinal locations on the strip formed by the sheet 15 '. Similarly, two of the preheaters 31 will be suitably positioned to preheat the relatively narrow zones of the sheet 15' to receive the two 10 'closing strips. The guide roller 33 can be extended or made in two parts to receive the two closure strips 10 '. Similarly, the heating roller 34 can be extended or produced in two parts to effect the fusion of the ribs 17 in the connecting layers 19 '. Similarly, the pressure and guide roller 37 can be extended to take account of the spacing of the strips 10 'of the closure. Of course, the second sheet feed roller 29 and the preheater 38 will be eliminated. The rest of the processing apparatus remains the same except for a slight modification to accommodate the assembly 20 '.
En variante, on peut prévoir un rouleau d'alimentation de bande de fermeture imbriquée qui sera séparée en deux parties, chaque glissière étant guidée en alignement parallèle selon un espacement approprié entre elles sur la feuille 15' ouverte. Alternatively, a nested closure tape feed roller may be provided which will be separated into two parts, each slide being guided in parallel alignment at an appropriate spacing therebetween on the open sheet 15 '.
Si on le préfère, un dispositif apte à fournir de l'air chaud de fusion ou une autre énergie de fusion peut être utilisé à la place du rouleau de chauffage 34 à contact direct. La principale considération est que seules les nervures 17 doivent être mises en fusion pour fournir les couches de liaison 19 ou 19'. La fusion et le soudage doivent s'effectuer sans déformation ou autres détériorations des profilés des bandes 10, 10' des fermetures ou de la feuille 15, 15'. If preferred, a device capable of supplying hot melting air or other melting energy can be used in place of the direct contact heating roller 34. The main consideration is that only the ribs 17 need to be fused to provide the tie layers 19 or 19 '. The fusion and the welding must be carried out without deformation or other deterioration of the profiles of the strips 10, 10 ′ of the closures or of the sheet 15, 15 ′.
L'avantage souhaitable inhérent aux nervures 17 dans leur état solide est que pendant le déroulement de la bande depuis le ou les rouleaux 32 d'alimentation, ces nervures empêchent un dérapage latéral grâce à leur imbrication -comme cela est montré à la figure 6. Ceci est particulièrement avantageux lorsque les bandes de fermeture 10 jointes ou imbriquées (figure 1) sont fournies par un rouleau de grande dimension, l'engagement antidérapant des nervures 17 empêchant les dérives latérales susceptibles de provoquer le glissement des bandes de fermeture entre les couches des bandes enroulées, provoquant ainsi l'emmêlement des bandes et gênant l'opération à laquelle est soumis l'ensemble de la bande de fermeture en aval du dévidement depuis le rouleau d'alimentation. The desirable advantage inherent in the ribs 17 in their solid state is that during the unwinding of the strip from the feed roller or rollers 32, these ribs prevent lateral skidding thanks to their nesting -as shown in FIG. 6. This is particularly advantageous when the attached or overlapping closure strips 10 (FIG. 1) are provided by a large roller, the non-slip engagement of the ribs 17 preventing the lateral drifts capable of causing the closure strips to slide between the layers of the rolled up bands, thus causing the bands to become entangled and hampering the operation to which the whole of the closure band is subjected downstream of the unwinding from the feed roller.
La figure 6 représente l'agencement imbriqué des bandes de fermeture 10. Les bandes de fermeture imbriquées sont représentées sous la forme enroulée en spirale sur la bobine 32 et avec les nervures 17 des enroulements imbriquées dans les rainures 18. Dans ce type d'enroulement, à mesure que la bande de fermeture à glissière est dévidée de la bobine et que la tension d'enroulement est relâchée, la bande de fermeture peut avoir tendance à se glisser entre les enroulements et à s'emmêler en l'absence des nervures 17 imbriquées empêchant le déplacement latéral des enroulements de la bande. FIG. 6 represents the nested arrangement of the closure strips 10. The nested closure strips are shown in the form wound in a spiral on the reel 32 and with the ribs 17 of the windings nested in the grooves 18. In this type of winding , as the zipper tape is unwound from the spool and the winding tension is released, the tape may tend to slip between the windings and become tangled in the absence of ribs 17 nested preventing lateral movement of the tape windings.
Dans la figure 7, les bandes 40 de fermeture comportent non seulement des nervures 41 s'étendant longitudinalement le long de leurs faces arrière, avec des rainures 42 longitudinales légèrement plus larges entre les nervures, mais les côtés profilés des bandes de fermeture comportent, en plus des profilés 43 agrafés ensemble, des âmes de stabilisation 44. Dans cette forme également, l'ensemble des bandes de la fermeture, enroulées en spirale sur la bobine 32' ne peuvent se décaler transversalement ou latéralement grâce à l'imbrication des nervures 41, permises par les rainures 42. In FIG. 7, the closure strips 40 not only comprise ribs 41 extending longitudinally along their rear faces, with slightly wider longitudinal grooves 42 between the ribs, but the profiled sides of the closure strips comprise, in more profiles 43 stapled together, stabilizing webs 44. In this form also, all of the bands of the closure, wound in a spiral on the reel 32 'cannot be offset transversely or laterally thanks to the overlapping of the ribs 41 , allowed by the grooves 42.
La figure 8 montre des bandes 50 et 51 de fermeture du type selon lequel un profilé 52 présentant une forme générale de rainure dans la bande 50 s'imbrique de façon complémentairement séparable et refermable dans une rainure 53 présentant sensiblement une forme de tête de flèche de la bande 51 de fermeture. Les ailes 54 d'embase respectives sur la fermeture ou sur les bandes 50 et 51 de fermeture comportent des rainures 55 qui font saillie à partir des profilés des bandes respectives et sont fusibles pour les mêmes raisons que cela a été décrit à l'égard des rainures fusibles 17. Tandis que les rainures fusibles 55 sont situées le long des bords opposés des ailes d'embase 54, avec un espace substantiel 57 entre les nervures 55, lorsque les nervures 55 s'imbriquent sensiblement comme cela est montré, bien qu'un jeu latéral plus important soit permis, les nervures 55 coopèrent néanmoins pour empêcher que l'ensemble de la bande enroulée en spirale ne se déplace latéralement dans des proportions telles qu'elles provoqueraient l'emmêlement pendant le déroulement de l'en- semble de la bande. FIG. 8 shows closing strips 50 and 51 of the type according to which a profile 52 having a general shape of groove in the strip 50 is nested in a separable manner and can be closed in a groove 53 having substantially the shape of an arrow head of the closing strip 51. The respective base wings 54 on the closure or on the closure strips 50 and 51 have grooves 55 which project from the profiles of the respective strips and are fusible for the same reasons as has been described with regard to fuse grooves 17. While the fuse grooves 55 are located along the opposite edges of the base wings 54, with a substantial space 57 between the ribs 55, when the ribs 55 substantially overlap as shown, although greater lateral play is permitted, the ribs 55 nevertheless cooperate to prevent the whole of the spirally wound strip from moving laterally in such proportions as to cause tangling during the course of the assembly of the band.
Claims (23)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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FR8704736A FR2613326B1 (en) | 1987-04-03 | 1987-04-03 | SEPARABLE CLOSURE STRIP; METHOD AND APPARATUS FOR FIXING IT TO A SUBSTRATE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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FR8704736A FR2613326B1 (en) | 1987-04-03 | 1987-04-03 | SEPARABLE CLOSURE STRIP; METHOD AND APPARATUS FOR FIXING IT TO A SUBSTRATE |
Publications (2)
Publication Number | Publication Date |
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FR2613326A1 true FR2613326A1 (en) | 1988-10-07 |
FR2613326B1 FR2613326B1 (en) | 1989-07-13 |
Family
ID=9349784
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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FR8704736A Expired FR2613326B1 (en) | 1987-04-03 | 1987-04-03 | SEPARABLE CLOSURE STRIP; METHOD AND APPARATUS FOR FIXING IT TO A SUBSTRATE |
Country Status (1)
Country | Link |
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FR (1) | FR2613326B1 (en) |
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US6286999B1 (en) | 1999-05-11 | 2001-09-11 | Pactiv Corporation | Tamper-evident reclosable bag |
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EP0025656A1 (en) * | 1979-09-13 | 1981-03-25 | Roeder Industrial Holdings Limited | Profiled plastics bag closure strip and adhesive bonding method |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5067822A (en) * | 1989-04-24 | 1991-11-26 | Reynolds Consumer Products, Inc. | Method of forming recloseable packages, profiles used therein, and packages produced thereby |
US5198055A (en) * | 1989-04-24 | 1993-03-30 | Reynolds Consumer Products, Inc. | Method of forming recloseable packages, profiles used therein, and packages produced thereby |
US5366294A (en) * | 1989-04-24 | 1994-11-22 | Reynolds Consumer Products, Inc. | Recloseable package having recloseable profile strips with a heat barrier |
US5238306A (en) * | 1989-05-19 | 1993-08-24 | Reynolds Consumer Products, Inc. | Method of producing a sealing system for a reclosable webbed-wall package, and system made |
FR2764582A1 (en) * | 1997-06-17 | 1998-12-18 | Flexico France Sarl | BAG COMPRISING A CLOSURE DEVICE FORMED BY ADDITIONAL PROFILES AND CLOSURE DEVICE THEREFOR |
WO1998057863A1 (en) * | 1997-06-17 | 1998-12-23 | Flexico-France | Bag comprising a closing device with matching sections and closing device therefor |
AU728260B2 (en) * | 1997-06-17 | 2001-01-04 | Flexico-France | A bag including a closure device made of complementary strips and a closure device therefor |
EP0906866A1 (en) | 1997-10-03 | 1999-04-07 | Flexico-France | Method and machine for the automatic manufacture of bags, as well as the bags thus obtained |
FR2769288A1 (en) | 1997-10-03 | 1999-04-09 | Flexico France Sarl | AUTOMATIC BAGS MANUFACTURING PROCESS, MACHINE FOR THIS PURPOSE AND BAGS OBTAINED |
EP1180087A1 (en) † | 1999-08-12 | 2002-02-20 | Pactiv Corporation | Fill-through-the-top package and method and apparatus for making same |
EP1180087B2 (en) † | 1999-08-12 | 2015-04-22 | Pactiv Corporation | Fill-through-the-top package and method and apparatus for making same |
Also Published As
Publication number | Publication date |
---|---|
FR2613326B1 (en) | 1989-07-13 |
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