EP0266670B1 - Carrier bag made of a thermoplastic foil - Google Patents

Carrier bag made of a thermoplastic foil Download PDF

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Publication number
EP0266670B1
EP0266670B1 EP87115864A EP87115864A EP0266670B1 EP 0266670 B1 EP0266670 B1 EP 0266670B1 EP 87115864 A EP87115864 A EP 87115864A EP 87115864 A EP87115864 A EP 87115864A EP 0266670 B1 EP0266670 B1 EP 0266670B1
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EP
European Patent Office
Prior art keywords
grid
carrier bag
areas
rows
approximately
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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EP87115864A
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German (de)
French (fr)
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EP0266670A2 (en
EP0266670A3 (en
Inventor
Robert Wagner
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STIEGLER GmbH MASCHINENFABRIK
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STIEGLER GmbH MASCHINENFABRIK
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Priority claimed from DE19868629509 external-priority patent/DE8629509U1/de
Priority claimed from DE8708719U external-priority patent/DE8708719U1/de
Application filed by STIEGLER GmbH MASCHINENFABRIK filed Critical STIEGLER GmbH MASCHINENFABRIK
Priority to AT87115864T priority Critical patent/ATE73083T1/en
Publication of EP0266670A2 publication Critical patent/EP0266670A2/en
Publication of EP0266670A3 publication Critical patent/EP0266670A3/en
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Publication of EP0266670B1 publication Critical patent/EP0266670B1/en
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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
    • B65D33/02—Local reinforcements or stiffening inserts, e.g. wires, strings, strips or frames
    • 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
    • B65D33/06—Handles
    • B65D33/08—Hand holes

Definitions

  • the innovation relates to a carrier bag made of thermoplastic plastic film with grip holes in the pocket walls and with reinforcement film made of thermoplastic plastic film, such as reinforcement sheets, which is welded to the pocket holes in pattern areas in partial areas.
  • Carrying bags or bags of the aforementioned type are widely known.
  • the filling weight or carrying weight of such bags is determined by the pull-out strength of the grip holes. This is increased by means of reinforcement sheets which are either glued or welded on the inside of the carrier bags.
  • the welding is carried out in a known manner with permanently heated welding head punches with welding strips arranged parallel to one another, whereby a stripe pattern is created for the welded surfaces. Instead of using welding strips, it is also known to work with pulse bands. In these common welding processes for the production of flat weld seams, heat is applied by the welding stamp on one side. Because the welds are not under pressure afterwards cooled, they get a wavy appearance with many types of plastic film.
  • the invention has for its object to reduce the wavy appearance or shrinkage of the foils produced during the partial welding of the reinforcement sheets to the carrier bags and at the same time to achieve the necessary welding strengths and to increase the carrying capacity of the carrier bag. At the same time, care must be taken that the production cycles not be extended.
  • the reinforcing film and the pocket walls are arranged by grid-shaped point areas of a size of about 2 to 16 mm2 are welded to one another and the sum of the point areas forming the welds to the sum of the unwelded areas of the grid area is in a ratio of approximately 1: 2 to 1: 4.
  • the punctiform surfaces can have a square, square, rectangular or triangular or rounded or round shape.
  • many small welded connecting surfaces are created between the reinforcement sheet and the pocket wall, which are preferably approximately of the same size, have approximately the same shape and are approximately uniformly distributed on the reinforcement film, for example in the form of reinforcement sheets.
  • the large number of very small welded surfaces so-called point surfaces, reduces the shrinkage of the films and thus achieves a more uniform and better appearance of the welded areas, and essentially maintains the smooth appearance of the films welded together. This is due to the fact that many small welded areas only produce many small shrinkage portions which are relatively evenly distributed over a large area.
  • the sum of the point areas forming the welds can be kept very small compared to the sum of the unwelded areas of the grid.
  • the sum of the spot areas forming the welds to the total of the unwelded areas of the grid area is preferably in a ratio of about 1: 2 to 1: 4. as a result, not only does shrinkage decrease, but surprisingly a higher welding speed and thus production speed can be achieved during manufacture.
  • the grid-shaped welded connection between pocket walls and reinforcing sheets achieves at least the strengths which can be achieved with known welds, and - depending on the design of the grid - even exceeds them.
  • the invention includes as reinforcement sheets both the separate and the grip hole reinforcement sheets formed by folding over the film of the pocket.
  • the rows of the grid formed by the point surfaces can run perpendicularly or approximately perpendicularly to one another. In one possible embodiment, the rows run parallel to the pocket bottom or to the pocket longitudinal axis. It is also possible to arrange the rows of grids that are perpendicular to one another at an angle to the longitudinal axis of the pocket.
  • a preferred embodiment and arrangement of the welding grid of the reinforcing sheet and the wall of the carrier bag provides that the grid rows run at an angle ⁇ of 45 ° to the longitudinal axis of the carrier bags.
  • a welding pattern of the reinforcement sheet and the wall of the carrier bag is obtained, in which the welding squares are aligned with a diagonal parallel to the longitudinal axis of the carrier bag.
  • This arrangement of the grid causes a good reinforcement of the grip hole. In particular, there is an even load distribution. But it is also possible to design the grid so that the grid rows intersect at a different (than 90 °) angle. However, the grid should always be symmetrical to the longitudinal axis of the pocket to ensure an even load-bearing capacity.
  • a further advantageous embodiment and arrangement of the welding grid of the reinforcement sheet with the pocket walls provides that the one rows of the grid are arranged parallel to the longitudinal axis of the carrier bag and the other rows of the grid are arranged in a slightly concave shape with respect to the carrying edge of the carrier bag.
  • the slightly curved shape of the grid for example based on a circular ring section, surprisingly achieves a considerably improved pull-out strength in the area of the finger hole corners.
  • This design of the grid results in a particularly good reinforcement of the grip hole and, with little effort, results in optimal pull-out strength and resilience. It is also possible to have both the rows of a grid in an arc and the others To let grid rows run radially (radially) to a center point lying on the longitudinal axis of the carrier bag.
  • the dot areas can either all be the same size and the same or they can be adapted to the course of the rows.
  • the arcuate grid rows are preferably arranged parallel to one another at equal distances from one another, as are the grid rows running parallel to the longitudinal axis of the carrier bag.
  • the carrier bags and pouches according to the invention are usually produced from mono- or composite films based on polyolefins, such as high-pressure polyethylene, linear polyethylene, low-pressure polyethylene and possibly other suitable thermoplastic plastics, and have reinforcing sheets with a thickness of approximately 50 to 120 ⁇ m made from films based on polyolefins that can be easily welded to the bags
  • the size of the reinforcement sheets also depends on the shape of the grip hole and the size of the carrier bags, and should generally surround the grip hole by at least about 20 mm all around.
  • reinforcement sheets can either be formed and applied separately or, e.g. can be formed by simply or double folding the film over the top edge of the bag.
  • the grid to be used for the formation of the welding surfaces according to the invention is advantageously formed with point surfaces with a size of approximately 2 to approximately 16 mm 2 and grid rows with a spacing of approximately 3 to 10 mm, measured from the central axes of the rows.
  • point surfaces with a size of approximately 2 to approximately 16 mm 2 and grid rows with a spacing of approximately 3 to 10 mm, measured from the central axes of the rows.
  • approximately rectangular or square point areas are formed.
  • a denser grid that is to say enlarged welding areas compared to the other areas, is provided to the area adjoining the pocket bottom.
  • the denser grid can be formed by dot areas that are enlarged compared to the other areas, or, if the number of dot areas per area unit is the same, the number of dot areas is increased.
  • the type of welding of reinforcing sheets to the walls of the carrier bags according to the invention is achieved with a welding stamp with elevations, i.e. Welding heads and channels are designed according to the punctiform surfaces and grid rows of the grid with a profiled surface.
  • the welding stamp should be operated according to the method of thermal contact welding - i.e. a weld seam to be heated on one side - and can e.g. heated by heating cartridges and equipped with a temperature controller for the desired welding temperature and time.
  • the inventive design of the welding surfaces of the reinforcement sheets in the case of carrier bags has the further advantage that compliance with dimensional tolerances is facilitated and simplified for the assignment of the welding stamp to the grip hole, since tolerances of the grip hole to the welding pattern play a smaller role in the innovation - when slipping - than with conventional sweatstrip patterns.
  • An asymmetry in the assignment of the grip hole to the welding strips of the known techniques immediately leads to a loss of strength, while such an asymmetry has less of an effect on the welding pattern according to the invention with a large number of punctiform welding surfaces.
  • FIG. 1 shows a carrier bag 1 with front and rear walls 1a, b, with a bottom fold 4 on the bottom of the pocket and a grip hole 2 formed in each wall below the carrying edge and the opening 9.
  • the grip hole 2 is reinforced by reinforcement sheets 3a, 3b made of plastic film welded on the inside of the walls 1a, b of the carrying bag.
  • the side edges 10 are welded.
  • the grip hole can have the shape of an elongated hole, banana or ellipse or the like.
  • the reinforcing sheets 2 can also be welded to the outside of the carrier bag walls.
  • FIG. 3 the force field 5 generated when filling the carrying bag 1 and by carrying it as a result of the carrying weight shown schematically.
  • the lines of force run somewhat inclined from the longitudinal axis 6 of the carrier bag towards the corners at the bottom of the carrier bag. The greatest stresses occur in the area of the side grip hole edges below it.
  • This force field is advantageously absorbed by the grid-like welding of reinforcing sheets 3a, 3b to the walls 1a, 1b of the carrying bag, and the strength and carrying capacity of the carrying bag 1 are thereby increased.
  • FIG. 4 shows an extract of a possible grid design with point surfaces 7, which are arranged in rows 8, 18 in the grid surface 20, for welding the reinforcement sheets 3 in the region of the grip hole 2 to the plastic film of the pocket wall la.
  • the grid and grip hole shown are about natural size.
  • the free distance c between the grid rows will be approximately between 1.5 to 4 mm, c preferably being chosen to be equal to or slightly larger than a or b.
  • the preferred dot-area grid with the dot areas 7, which form the welded areas is an extract according to the invention Welding of the reinforcement sheets 3 in the region of the grip hole 2 is shown.
  • the grid and grip hole shown are about natural size.
  • the grid shown is still relatively easy to produce as a welding stamp.
  • the one formed by the point surfaces 7 grid rows 8 run parallel to the longitudinal axis 6 of the carrier bag, the other grid rows 18 only approximately perpendicular to it in arcuate parallel lines, so that they are symmetrical to the longitudinal axis 6 and concave with respect to the support edge 9 or The opening of the carrier bag runs.
  • the grid rows are preferably arranged at equal distances from one another.
  • the grid has approximately square point surfaces 7, which represent the welded areas, of approximately 4 mm 2, the point surfaces 7, which are further away from the longitudinal axis 6, being slightly rectangular-shaped and slightly enlarged.
  • the point surfaces 7 of the rows 8, 18 could also be the same size, they could also be staggered with respect to one another.
  • the distance e or d of the rows 8, 18 from one another, measured from their central axes, is approximately 4 mm, the edge lengths a, b of the welded point surfaces are each approximately 2 mm. This results in a ratio of the welded surfaces 7 to the unwelded surface regions of the grid of approximately 1: 3.
  • Other grid patterns of uniform or mixed configurations are also possible.
  • the distances e and d of the grid rows from one another should be approximately 3 to 10 mm, preferably a or b being selected to be equal to or slightly smaller than half the row spacing from one another.
  • FIGS. 5 and 6 show, in a schematic partial section, the design of a welding stamp for producing the grid-type welds in a carrying bag.
  • the welding stamp 14 works according to the thermal contact welding method with one-sided application of the weld seams to be produced or areas to be welded and is continuously heated.
  • the contact surface of the welding stamp is profiled in accordance with the desired pattern of the welding pattern, ie for example the welds according to FIG. 4 are profiled.
  • Elevations 12 also called welding heads, are designed according to the size of the punctiform surfaces 7 of the grid, between which the channels 13 are designed according to the shape of the desired grid 8, 18, see also FIG. 6.
  • This profiled contact surface 12, 13 is fixed by a adjacent PTFE separating film 11 to prevent the weld metal from sticking.
  • the welding stamp acts on the reinforcement sheet 3 as the top layer and produces the welds in the grid, as shown in FIG. 4.

Abstract

The carrier bag has grip holes and a welded-on grip hole reinforcement made of thermoplastic film, e.g. in the shape of reinforcement sheets which are welded to the bag walls in partial areas in a punctiform grid pattern. <IMAGE>

Description

Die Neuerung betrifft eine Tragetasche aus thermoplastischer Kunststoffolie mit Grifflöchern in den Taschenwänden und mit die Grifflöcher umgebender mustermäßig in Teilflächen mit den Taschenwänden verschweißter Verstärkungsfolie aus thermoplastischer Kunststoffolie, wie Verstärkungsblättern.The innovation relates to a carrier bag made of thermoplastic plastic film with grip holes in the pocket walls and with reinforcement film made of thermoplastic plastic film, such as reinforcement sheets, which is welded to the pocket holes in pattern areas in partial areas.

Tragetaschen bzw. -beutel der vorgenannten Art sind vielfach bekannt. Das Füllgewicht oder Traggewicht solcher Beutel wird durch die Ausreißfestigkeit der Grifflöcher bestimmt. Diese wird durch auf der Innenseite der Tragetaschen angeordnete entweder eingeklebte oder eingeschweißte Verstärkungsblätter erhöht. Das Einschweißen wird hierbei in bekannter Weise mit dauerbeheizten Schweißkopfstempeln mit parallel zueinander angeordneten Schweißleisten vorgenommen, wodurch ein Streifenmuster für die verschweißten Flächen entsteht. Statt mit Schweißleisten ist es auch bekannt, mit Impulsbändern zu arbeiten. Bei diesen gebräuchlichen Schweißverfahren zur Herstellung von flachen Schweißnähten erfolgt die Wärmebeaufschlagung durch den Schweißstempel einseitig. Dadurch, daß die Schweißnähte anschließend nicht unter Druck abgekühlt werden, erhalten sie bei vielen Kunststoffolientypen ein welliges Aussehen. Da für die wirtschaftliche Herstellung von Tragetaschen die Produktionsgeschwindigkeiten hoch gehalten werden müssen, ist es auch nicht möglich, die dem Schweißen folgende mit Abkühlungszeit zu erhöhen, um einen Abkühlungseffekt durch verlängertes Ruhen auf der Schweißunterlage zu erzielen. Es stellt sich so die Aufgabe, die Schweißnähte bzw. Schweißflächen so klein wie möglich zu gestalten, um einen minimalen aus der Schweißnaht abzuführenden Wärmeinhalt zu schaffen. Die Verringerung der zu verschweißenden Fläche bei partieller Verschweißung, d.h. nur in Teilflächen erfolgenden Verschweißung des Verstärkungsblattes mit den Wänden der Tragetasche, hat jedoch zugleich eine Verrringerung der Festigkeiten und damit der Belastbarkeit der Tragetasche zur Folge. Deshalb wird beim Herstellen von Verschweißungen mittels Schweißleisten oder Impulsbändern zum Verbinden der Verstärkungsblätter mit den Wandungen der Tragetasche eine Mindestbreite der Schweißnahtstreifen sowie Maximalabstände der Streifen voneinander eingehalten, um die erforderlichen Festigkeiten zu erzielen und der Nachteil eines welligen Aussehens wird ebenfalls in Kauf genommen.Carrying bags or bags of the aforementioned type are widely known. The filling weight or carrying weight of such bags is determined by the pull-out strength of the grip holes. This is increased by means of reinforcement sheets which are either glued or welded on the inside of the carrier bags. The welding is carried out in a known manner with permanently heated welding head punches with welding strips arranged parallel to one another, whereby a stripe pattern is created for the welded surfaces. Instead of using welding strips, it is also known to work with pulse bands. In these common welding processes for the production of flat weld seams, heat is applied by the welding stamp on one side. Because the welds are not under pressure afterwards cooled, they get a wavy appearance with many types of plastic film. Since the production speeds have to be kept high for the economical production of carrier bags, it is also not possible to increase the time following the welding with cooling time in order to achieve a cooling effect by prolonged resting on the welding base. The task thus arises to make the weld seams or welding surfaces as small as possible in order to create a minimal amount of heat to be dissipated from the weld seam. However, the reduction in the area to be welded in the case of partial welding, ie welding of the reinforcement sheet to the walls of the carrying bag only in partial areas, also results in a reduction in the strength and thus in the carrying capacity of the carrying bag. Therefore, when producing welds using welding strips or pulse bands for connecting the reinforcement sheets to the walls of the carrier bag, a minimum width of the weld seam strips and maximum spacing of the strips from one another are observed in order to achieve the required strengths and the disadvantage of a wavy appearance is also accepted.

Der Erfindung liegt die Aufgabe zugrunde, das beim partiellen Anschweißen der Verstärkungsblätter an die Tragetaschen erzeugte wellige Aussehen bzw. das Verschrumpfen der Folien zu verringern und gleichzeitig die notwendigen Schweißfestigkeiten zu erzielen und die Tragfähigkeit der Tasche zu erhöhen Gleichzeitig ist darauf zu achten, daß die Produktionszyklen nicht verlängert werden.The invention has for its object to reduce the wavy appearance or shrinkage of the foils produced during the partial welding of the reinforcement sheets to the carrier bags and at the same time to achieve the necessary welding strengths and to increase the carrying capacity of the carrier bag. At the same time, care must be taken that the production cycles not be extended.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß die Verstärkungsfolie und die Taschenwände durch rasterförmig angeordnete Punktflächen einer Größe von etwa 2 bis 16 mm² miteinander verschweißt sind und die Summe der die Verschweißungen bildenden Punktflächen zu der Summe der unverschweißten Flächen der Rasterfläche im Verhältnis von etwa 1:2 bis 1:4 steht. Die punktförmigen Flächen können hierbei viereckige, quadratische, rechteckige oder dreieckige oder abgerundete bzw. runde Form aufweisen.This object is achieved according to the invention in that the reinforcing film and the pocket walls are arranged by grid-shaped point areas of a size of about 2 to 16 mm² are welded to one another and the sum of the point areas forming the welds to the sum of the unwelded areas of the grid area is in a ratio of approximately 1: 2 to 1: 4. The punctiform surfaces can have a square, square, rectangular or triangular or rounded or round shape.

Mit dem erfindungsgemäßen Vorschlag werden viele kleine verschweißte Verbindungsflächen zwischen Verstärkungsblatt und Taschenwand geschaffen, die bevorzugt annähernd gleich groß, annähernd gleichartig geformt und annähernd gleichmäßig verteilt auf der Verstärkungsfolie, z.B. in Gestalt von Verstärkungsblättern angeordnet sind. Überraschend gelingt es durch die Vielzahl sehr kleiner verschweißter Flächen, sogenannter Punktflächen, das Verschrumpfen der Folien zu verringern und damit ein gleichmäßigeres und besseres Aussehen der verschweißten Bereiche zu erzielen, und das glatte Aussehen der miteinander verschweißten Folien im wesentlichen zu erhalten. Dies ist darauf zurückzuführen, daß viele kleine verschweißte Flächen nur viele kleine Schrumpfanteile erzeugen, die sich über eine große Fläche relativ gleichmäßig verteilen. Dabei hat sich überraschend ergeben, daß - um gleiche Festigkeiten und Ausreißfestigkeiten bei Belastung der Tragetasche im Grifflochbereich mit Verstärkungsblatt zu erzielen - die Summe der die Verschweißungen bildenden Punktflächen zu der Summe der unverschweißten Flächen des Rasters sehr klein gehalten werden kann. Bevorzugt steht die Summe der die Verschweißungen bildenden Punktflächen zu der Summe der unverschweißten Flächen der Rasterfläche im Verhältnis von etwa 1 : 2 bis 1 : 4. Hieraus resultiert, daß bei der erfindungsgemäßen Art der Ausbildung der Verschweißungsflächen ein geringerer Wärmeinhalt aus dem Schweißbereich abzuführen ist, infolgedessen sich nicht nur die Verschrumpfung verringert, sondern überraschend auch eine höhere Schweißgeschwindigkeit und damit Produktionsgeschwindigkeit bei der Herstellung erzielt werden kann. Darüber hinaus hat sich völlig überraschend herausgestellt, daß die rasterförmige Schweißverbindung zwischen Taschenwänden und Verstärkungsblättern mindestens die mit bekannten Verschweißungen erzielbaren Festigkeiten erreicht, und diese - je nach Ausbildung des Rasters - noch übertrifft. Die Erfindung umfaßt dabei als Verstärkungsblätter sowohl die separaten als auch die durch Umschlagen der Folie der Tasche gebildeten Grifflochverstärkungsblätter.With the proposal according to the invention, many small welded connecting surfaces are created between the reinforcement sheet and the pocket wall, which are preferably approximately of the same size, have approximately the same shape and are approximately uniformly distributed on the reinforcement film, for example in the form of reinforcement sheets. Surprisingly, the large number of very small welded surfaces, so-called point surfaces, reduces the shrinkage of the films and thus achieves a more uniform and better appearance of the welded areas, and essentially maintains the smooth appearance of the films welded together. This is due to the fact that many small welded areas only produce many small shrinkage portions which are relatively evenly distributed over a large area. It has surprisingly been found that - in order to achieve the same strength and tear-out strength when the carrying bag is loaded in the grip hole area with the reinforcing sheet - the sum of the point areas forming the welds can be kept very small compared to the sum of the unwelded areas of the grid. The sum of the spot areas forming the welds to the total of the unwelded areas of the grid area is preferably in a ratio of about 1: 2 to 1: 4. as a result, not only does shrinkage decrease, but surprisingly a higher welding speed and thus production speed can be achieved during manufacture. In addition, it has been found completely surprisingly that the grid-shaped welded connection between pocket walls and reinforcing sheets achieves at least the strengths which can be achieved with known welds, and - depending on the design of the grid - even exceeds them. The invention includes as reinforcement sheets both the separate and the grip hole reinforcement sheets formed by folding over the film of the pocket.

Die von den Punktflächen gebildeten Reihen des Rasters können bei der einfachsten Anordnung senkrecht bzw. annähernd senkrecht zueinander verlaufen. Bei einer möglichen Ausführung verlaufen dabei die Reihen parallel zum Taschenboden bzw. zur Taschenlängsachse. Es ist auch möglich, die senkrecht aufeinanderstehenden Rasterreihen insgesamt unter einem Winkel zur Taschenlängsachse anzuordnen.In the simplest arrangement, the rows of the grid formed by the point surfaces can run perpendicularly or approximately perpendicularly to one another. In one possible embodiment, the rows run parallel to the pocket bottom or to the pocket longitudinal axis. It is also possible to arrange the rows of grids that are perpendicular to one another at an angle to the longitudinal axis of the pocket.

Eine bevorzugte Ausbildung und Anordnung des Verschweißungsrasters von Verstärkungsblatt und Tragetaschenwand sieht vor, daß die Rasterreihen unter einem Winkel α von 45° zur Längsachse der Tragetaschen verlaufen. Bei quadratischen Punktflächen erhält man dann ein Schweißbild von Verstärkungsblatt und Tragetaschenwand, bei dem die Schweißquadrate mit einer Diagonalen parallel zur Längsachse der Tragetasche ausgerichtet sind. Diese Anordnung des Rasters bewirkt eine gute Verstärkung des Griffloches. Es findet insbesondere eine gleichmäßige Lastverteilung statt. Es ist aber auch möglich, das Raster so auszubilden, daß die Rasterreihen sich unter einem anderen (als 90°) Winkel kreuzen. Jedoch sollte das Raster stets zur Taschenlängsachse symmetrisch sein, um eine gleichmäßige Tragfähigkeit zu gewährleisten.A preferred embodiment and arrangement of the welding grid of the reinforcing sheet and the wall of the carrier bag provides that the grid rows run at an angle α of 45 ° to the longitudinal axis of the carrier bags. In the case of square point surfaces, a welding pattern of the reinforcement sheet and the wall of the carrier bag is obtained, in which the welding squares are aligned with a diagonal parallel to the longitudinal axis of the carrier bag. This arrangement of the grid causes a good reinforcement of the grip hole. In particular, there is an even load distribution. But it is also possible to design the grid so that the grid rows intersect at a different (than 90 °) angle. However, the grid should always be symmetrical to the longitudinal axis of the pocket to ensure an even load-bearing capacity.

Eine weitere vorteilhafte Ausbildung und Anordnung des Verschweißungsrasters von Verstärkungsblatt mit den Taschenwänden sieht vor, daß die einen Reihen des Rasters parallel zur Längsachse der Tragetasche und die anderen Reihen des Rasters in bezug auf den Tragrand der Tragetasche in leicht konkav gebogener Form angeordnet sind. Durch die erfindungsgemäße leicht bogenförmige, z.B. an einen Kreisringabschnitt angelehnte Form des Rasters wird überraschend eine wesentlich verbesserte Ausreißfestigkeit im Bereich der Grifflochecken erzielt. Diese Ausbildung des Rasters bewirkt eine besonders gute Verstärkung des Griffloches und hat bei geringem Aufwand eine optimale Ausreißfestigkeit und Belastbarkeit zur Folge. Es ist auch möglich, sowohl die einen Rasterreihen bogenförmig als auch die anderen Rasterreihen strahlenförmig (radial) verlaufend auf einen auf der Längsachse der Tragetasche liegenden Mittelpunkt zulaufen zu lassen. Die Punktflächen können hierbei entweder alle gleich groß und gleich gestaltet oder aber dem Reihenverlauf angepaßt werden. Bevorzugt sind die bogenförmigen Rasterreihen parallel zueinander mit gleichen Abständen voneinander angeordnet, ebenso die parallel zur Längsachse der Tragetasche verlaufenden Rasterreihen.A further advantageous embodiment and arrangement of the welding grid of the reinforcement sheet with the pocket walls provides that the one rows of the grid are arranged parallel to the longitudinal axis of the carrier bag and the other rows of the grid are arranged in a slightly concave shape with respect to the carrying edge of the carrier bag. The slightly curved shape of the grid, for example based on a circular ring section, surprisingly achieves a considerably improved pull-out strength in the area of the finger hole corners. This design of the grid results in a particularly good reinforcement of the grip hole and, with little effort, results in optimal pull-out strength and resilience. It is also possible to have both the rows of a grid in an arc and the others To let grid rows run radially (radially) to a center point lying on the longitudinal axis of the carrier bag. The dot areas can either all be the same size and the same or they can be adapted to the course of the rows. The arcuate grid rows are preferably arranged parallel to one another at equal distances from one another, as are the grid rows running parallel to the longitudinal axis of the carrier bag.

Die neuerungsgemäßen Tragetaschen und -beutel werden üblicherweise aus Mono- oder Verbundfolien auf Basis von Polyolefinen, wie Hochdruckpolyethylen, lineares Polyethylen, Niederdruckpolyethylen und ggf. weiteren geeigneten thermoplastischen Kunststoffen hergestellt und weisen Verstärkungsblätter einer Dicke von etwa 50 bis 120 µ aus Folien auf Basis Polyolefinen auf, die gut mitden Folien der Taschen verschweißbar sind. Die Größe der Verstärkungsblätter richtet sich auch nach der Grifflochform und der Größe der Tragetaschen, und sollte in der Regel das Griffloch ringsumlaufend um jeweils etwa 20 mm mindestens umranden. Für die Anwendung der Erfindung können Verstärkungsblätter entweder separat ausgebildet sein und aufgebracht werden oder aber z.B. durch einfaches oder doppeltes Umschlagen der Folie des oberen Taschenrandes ausgebildet werden. Das für die Ausbildung der Verschweißungsflächen gemäß der Erfindung zu verwendende Raster wird vorteilhaft mit Punktflächen einer Größe von etwa 2 bis etwa 16 mm² und Rasterreihen mit einem Abstand voneinander von etwa 3 bis 10 mm, gemessen von den Mittelachsen der Reihen, ausgebildet. Bei einem gleichmäßigen Raster, bei dem die Rasterreihen annähernd zueinander senkrecht verlaufen, werden annähernd rechteckige bzw. quadratische Punktflächen ausgebildet. Es ist jedoch auch möglich, die Rasterreihen unter einem anderen Winkel sich kreuzen zu lassen, so daß rautenförmige Punktflächen entstehen.The carrier bags and pouches according to the invention are usually produced from mono- or composite films based on polyolefins, such as high-pressure polyethylene, linear polyethylene, low-pressure polyethylene and possibly other suitable thermoplastic plastics, and have reinforcing sheets with a thickness of approximately 50 to 120 μm made from films based on polyolefins that can be easily welded to the bags The size of the reinforcement sheets also depends on the shape of the grip hole and the size of the carrier bags, and should generally surround the grip hole by at least about 20 mm all around. For the application of the invention, reinforcement sheets can either be formed and applied separately or, e.g. can be formed by simply or double folding the film over the top edge of the bag. The grid to be used for the formation of the welding surfaces according to the invention is advantageously formed with point surfaces with a size of approximately 2 to approximately 16 mm 2 and grid rows with a spacing of approximately 3 to 10 mm, measured from the central axes of the rows. In the case of a uniform grid, in which the grid rows run approximately perpendicular to one another, approximately rectangular or square point areas are formed. However, it is also possible to have the grid rows intersect at a different angle, so that diamond-shaped point surfaces are created.

Um ggf. die Ausreißfestigkeiten im Bereich des Griffloches weiter zu erhöhen, wird gemäß einem weiteren Vorschlag vorgesehen, daß in dem an das Griffloch seitlich insbesondere zum Taschenboden anschließenden Bereich ein dichteres Raster, d.h. gegenüber den übrigen Bereichen vergrößerte Verschweißungsflächen, vorgesehen ist. Das dichtere Raster kann hierbei durch gegenüber den übrigen Bereichen vergrößerte Punktflächen oder aber bei gleicher Punktfläche vergrößerter Anzahl der Punktflächen je Flächeneinheit gebildet sein.In order to possibly further increase the pull-out strengths in the area of the grip hole, it is provided according to a further proposal that in particular on the side of the grip hole a denser grid, that is to say enlarged welding areas compared to the other areas, is provided to the area adjoining the pocket bottom. In this case, the denser grid can be formed by dot areas that are enlarged compared to the other areas, or, if the number of dot areas per area unit is the same, the number of dot areas is increased.

Die erfindungsgemäße Art der Verschweißung von Verstärkungsblättern mit den Wänden der Tragetaschen wird mit einem entsprechend dem Vorschlag der Erfindung ausgebildeten Schweißstempel mit Erhebungen, d.h. Schweißköpfchen und -kanälen entsprechend den punktförmigen Flächen und Rasterreihen des Rasters profilierter Oberfläche ausgebildet. Der Schweißstempel soll nach der Methode des Wärmekontaktschweißens - also einseitig mit Wärme zu beaufschlagende Schweißnaht - betrieben werden und kann z.B. mittels Heizpatronen aufgeheizt und mit einem Temperaturregler für die jeweils gewünschte Schweißtemperatur und -zeit ausgerüstet werden.The type of welding of reinforcing sheets to the walls of the carrier bags according to the invention is achieved with a welding stamp with elevations, i.e. Welding heads and channels are designed according to the punctiform surfaces and grid rows of the grid with a profiled surface. The welding stamp should be operated according to the method of thermal contact welding - i.e. a weld seam to be heated on one side - and can e.g. heated by heating cartridges and equipped with a temperature controller for the desired welding temperature and time.

Die erfindungsgemäße Ausbildung der Verschweißungsflächen der Verstärkungsblätter bei Tragetaschen hat des weiteren den Vorteil, daß für die Zuordnung des Schweißstempels zum Griffloch das Einhalten von Maßtoleranzen erleichtert und vereinfacht wird, da Toleranzen des Griffloches zum Schweißmuster bei der Neuerung eine geringere Rolle spielen -beim Verrutschen - als bei den herkömmlichen Schweißstreifenmustern. Eine Unsymmetrie der Zuordnung des Griffloches zu den Schweißstreifen der bekannten Techniken führt sofort zu einem Verlust an Festigkeit, während eine solche Unsymmetrie bei dem erfindungsgemäßen Schweißbild mit einer Vielzahl von punktförmigen Schweißflächen eine geringere Auswirkung hat. Darüber hinaus ist es möglich, beim Stanzen die Stanzränder des Griffloches ebenfalls zu verschweißen, so daß auch dadurch der Grifflochbereich verstärkt wird.The inventive design of the welding surfaces of the reinforcement sheets in the case of carrier bags has the further advantage that compliance with dimensional tolerances is facilitated and simplified for the assignment of the welding stamp to the grip hole, since tolerances of the grip hole to the welding pattern play a smaller role in the innovation - when slipping - than with conventional sweatstrip patterns. An asymmetry in the assignment of the grip hole to the welding strips of the known techniques immediately leads to a loss of strength, while such an asymmetry has less of an effect on the welding pattern according to the invention with a large number of punctiform welding surfaces. In addition, it is possible to also weld the punched edges of the grip hole during punching, so that the grip hole area is also reinforced thereby.

Die Erfindung wird in der Zeichnung anhand von Ausführungsbeispielen erläutert.The invention is explained in the drawing using exemplary embodiments.

Es zeigen

Figur 1
eine Vorderansicht einer Tragetasche und
Figur 2
einen schematischen Längsschnitt durch die Tragetasche nach Figur 1
Figur 3
ausschnittsweise die Kräftverhältnisse im Bereich des Griffloches der Tragetasche
Figur 4 und 7
verschiedene Ausbildungen der Verschweißungen von Verstärkungsblatt und Tragetasche in Aufsicht auf das Verstärkungsblatt
Figur 5
einen Schweißstempel auszugsweise im Querschnitt.
Figur 6
die Ansicht A des Schweißstempels nach Figur 5 für eine Rasterverschweißung nach Figur 4.
Show it
Figure 1
a front view of a tote bag and
Figure 2
2 shows a schematic longitudinal section through the carrying bag according to FIG. 1
Figure 3
sections of the force in the area of the handle hole of the carrier bag
Figures 4 and 7
different designs of the welds between the reinforcement sheet and the carrying bag, with a view of the reinforcement sheet
Figure 5
a part of a welding stamp in cross section.
Figure 6
the view A of the welding stamp according to FIG. 5 for a grid welding according to FIG. 4.

Die Figur 1 zeigt eine Tragetasche 1 mit Vorder- und Rückwand 1a, b, mit Bodenfalte 4 am Taschenboden und unterhalb des Tragerandes und der Öffnung 9 ausgebildetem Griffloch 2 in jeder Wand. Das Griffloch 2 ist durch innenseitig auf den Wänden 1a, b der Tragetasche eingeschweißte Verstärkungsblätter 3a, 3b aus Kunststoffolie verstärkt. Bei der in der Figur 1 und 2 dargestellten Tragetasche sind die Seitenränder 10 verschweißt.FIG. 1 shows a carrier bag 1 with front and rear walls 1a, b, with a bottom fold 4 on the bottom of the pocket and a grip hole 2 formed in each wall below the carrying edge and the opening 9. The grip hole 2 is reinforced by reinforcement sheets 3a, 3b made of plastic film welded on the inside of the walls 1a, b of the carrying bag. In the case of the carrying bag shown in FIGS. 1 and 2, the side edges 10 are welded.

Es ist jedoch auch möglich, anders ausgestattete Tragetaschen, wie ggf. mit Seitenfalten oder ohne Bodenfalten neuerungsgemäß auszustatten. Das Griffloch kann die Form eines Langloches, Banane oder Ellipse oder dergleichen aufweisen. Die Verstärkungsblätter 2 können auch außenseitig auf den Tragetaschenwänden aufgeschweißt sein.However, it is also possible to equip differently equipped carrier bags, such as possibly with side gussets or without bottom gussets according to the innovation. The grip hole can have the shape of an elongated hole, banana or ellipse or the like. The reinforcing sheets 2 can also be welded to the outside of the carrier bag walls.

In der Figur 3 ist das beim Befüllen der Tragetasche 1 und durch Tragen infolge des Traggewichtes erzeugte Kräftefeld 5 schematisch dargestellt. Die Kraftlinien verlaufen etwas aus der Längsachse 6 der Tragetasche geneigt in Richtung auf die Ecken am Boden der Tragetasche. Die stärksten Belastungen treten im Bereich der seitlichen Grifflochkanten unterhalb derselben auf. Dieses Kraftfeld wird durch die durchgeführte rastermäßige Verschweißung von Verstärkungsblättern 3a, 3b mit den Wänden 1a, 1b der Tragetasche vorteilhaft aufgenommen, und dadurch die Festigkeit und Tragfähigkeit der Tragetasche 1 erhöht.In FIG. 3, the force field 5 generated when filling the carrying bag 1 and by carrying it as a result of the carrying weight shown schematically. The lines of force run somewhat inclined from the longitudinal axis 6 of the carrier bag towards the corners at the bottom of the carrier bag. The greatest stresses occur in the area of the side grip hole edges below it. This force field is advantageously absorbed by the grid-like welding of reinforcing sheets 3a, 3b to the walls 1a, 1b of the carrying bag, and the strength and carrying capacity of the carrying bag 1 are thereby increased.

In der Figur 4 ist auszugsweise eine mögliche Rasterausbildung mit Punktflächen 7, die in Reihen 8,18 in der Rasterfläche 20 angeordnet sind, für die Verschweißung der Verstärkungsblätter 3 im Bereich des Griffloches 2 mit der Kunststoffolie der Taschenwand la dargestellt. Das gezeigte Raster und Griffloch haben etwa natürliche Größe. Das Raster weist quadratische Punktflächen 7 mit einer Länge a = 2 mm und Breite b = 2 mm, die die verschweißten Bereiche von etwa 4 mm² darstellen, auf, wobei die von den punktförmigen Flächen 7 gebildeten Rasterreihen 8, 18 senkrecht zueinander verlaufen und zwischen den Punktflächen ein freier Abstand c von 2 mm verbleibt. Hieraus ergibt sich ein Verhältnis der verschweißten Flächen 7 zu den unverschweißten Flächenbereichen 8 des Rasters von 1 : 3. Das Raster gemäß Figur 4 ist zur Längsachse 6 der Tragetasche so angeordnet, daß die Rasterlinien 8 unter einem Winkel α von 45° hierzu verlaufen. Es sind auch andere Rastermuster gleichförmiger oder auch gemischter Konfigurationen möglich. Für die Ausbildung von Tragetaschen werden die Kantenlängen a,b der punktförmigen Fläche 7, die den verschweißten Bereich darstellt im Bereich von etwa 1,5 bis 3 mm gewählt, wobei vorzugsweise a = b ist. Der freie Abstand c zwischen den Rasterreihen wird etwa zwischen 1,5 bis 4 mm betragen, wobei vorzugsweise c gleich oder etwas größer als a bzw. b gewählt wird.FIG. 4 shows an extract of a possible grid design with point surfaces 7, which are arranged in rows 8, 18 in the grid surface 20, for welding the reinforcement sheets 3 in the region of the grip hole 2 to the plastic film of the pocket wall la. The grid and grip hole shown are about natural size. The grid has square point areas 7 with a length a = 2 mm and width b = 2 mm, which represent the welded areas of approximately 4 mm 2, the grid rows 8, 18 formed by the point-shaped areas 7 running perpendicular to one another and between the Point areas a free distance c of 2 mm remains. This results in a ratio of the welded surfaces 7 to the unwelded surface areas 8 of the grid of 1: 3. The grid according to FIG. 4 is arranged in relation to the longitudinal axis 6 of the carrier bag in such a way that the grid lines 8 run at an angle α of 45 ° to it. Other grid patterns of uniform or mixed configurations are also possible. For the formation of carrier bags, the edge lengths a, b of the punctiform surface 7, which represents the welded area, are selected in the range from approximately 1.5 to 3 mm, preferably a = b. The free distance c between the grid rows will be approximately between 1.5 to 4 mm, c preferably being chosen to be equal to or slightly larger than a or b.

In der Figur 7 ist auszugsweise das bevorzugte punktflächenförmige Raster mit den Punktflächen 7, die die verschweißten Flächen bilden, einer neuerungsgemäßen Verschweißung der Verstärkungsblätter 3 im Bereich des Griffloches 2 dargestellt. Das gezeigte Raster und Griffloch haben etwa natürliche Größe. Das dargestellte Raster ist noch relativ einfach als Schweißstempel herstellbar. Die einen von den Punktflächen 7 gebildeten Rasterreihen 8 verlaufen parallel zur Längsachse 6 der Tragetasche, die anderen Rasterreihen 18 nur etwa annähernd senkrecht dazu in bogenförmigen zueinander parallelen Linien, so daß sie symmetrisch zur Längsachse 6 und konkav in bezug auf den Tragerand 9 bzw. der Öffnung der Tragetasche verlaufen. Bevorzugt sind die Rasterreihen jeweils mit gleichen Abständen voneinander angeordnet. Das Raster weist annähernd quadratische Punktflächen 7, die die verschweißten Bereiche darstellen, von etwa 4 mm² auf, wobei die weiter von der Längsachse 6 entfernten Punktflächen 7 leicht rechteckig rautenförmig abgewandelt und etwas vergrößert sind. Die Punktflächen 7 der Reihen 8, 18 könnten auch gleich groß sein, sie könnten auch auf Lücke gegeneinander versetzt angeordnet sein. Der Abstand e bzw. d der Reihen 8, 18 voneinander, gemessen von ihren Mittelachsen aus, beträgt etwa 4 mm, die Kantenlängen a,b der verschweißten Punktflächen je etwa 2 mm. Hieraus ergibt sich ein Verhältnis der verschweißten Flächen 7 zu den unverschweißten Flächenbereichen des Rasters von etwa 1 : 3. Es sind auch andere Rastermuster gleichförmiger oder auch gemischter Konfigurationen möglich. Die Abstände e und d der Rasterreihen voneinander sollten etwa 3 bis 10 mm betragen, wobei vorzugsweise a bzw. b gleich oder etwas kleiner als der halbe Reihenabstand voneinander gewählt werden.In FIG. 7, the preferred dot-area grid with the dot areas 7, which form the welded areas, is an extract according to the invention Welding of the reinforcement sheets 3 in the region of the grip hole 2 is shown. The grid and grip hole shown are about natural size. The grid shown is still relatively easy to produce as a welding stamp. The one formed by the point surfaces 7 grid rows 8 run parallel to the longitudinal axis 6 of the carrier bag, the other grid rows 18 only approximately perpendicular to it in arcuate parallel lines, so that they are symmetrical to the longitudinal axis 6 and concave with respect to the support edge 9 or The opening of the carrier bag runs. The grid rows are preferably arranged at equal distances from one another. The grid has approximately square point surfaces 7, which represent the welded areas, of approximately 4 mm 2, the point surfaces 7, which are further away from the longitudinal axis 6, being slightly rectangular-shaped and slightly enlarged. The point surfaces 7 of the rows 8, 18 could also be the same size, they could also be staggered with respect to one another. The distance e or d of the rows 8, 18 from one another, measured from their central axes, is approximately 4 mm, the edge lengths a, b of the welded point surfaces are each approximately 2 mm. This results in a ratio of the welded surfaces 7 to the unwelded surface regions of the grid of approximately 1: 3. Other grid patterns of uniform or mixed configurations are also possible. The distances e and d of the grid rows from one another should be approximately 3 to 10 mm, preferably a or b being selected to be equal to or slightly smaller than half the row spacing from one another.

Die Figuren 5 und 6 zeigen im schematischen Teilschnitt die Ausbildung eines Schweißstempels zum Herstellen der rastermäßigen Verschweißungen bei einer Tragetasche. Der Schweißstempel 14 arbeitet nach dem Wärmekontaktschweißverfahren mit einseitiger Beaufschlagung der herzustellenden Schweißnähte bzw. zu verschweißenden Bereiche und wird dauerbeheizt. Die Kontaktfläche des Schweißstempels ist profiliert entsprechend dem gewünschten Raster des Schweißmusters, d.h. z.B. der Verschweißungen gemäß Figur 4 profiliert, ausgebildet. In dem gezeigten Beispiel sind Erhebungen 12, auch Schweißköpfchen genannt, entsprechend der Größe der punktförmigen Flächen 7 des Rasters ausgebildet, zwischen denen die Kanäle 13 entsprechend der Form des gewünschten Rasters 8, 18 ausgebildet sind, siehe auch Figur 6. Diese profilierte Kontaktfläche 12, 13 wird von einer fest anliegenden PTFE - Trennfolie 11 abgedeckt, um ein Ankleben des Schweißgutes zu vermeiden. Der Schweißstempel wirkt auf das Verstärkungsblatt 3 als oberste Schicht ein und erzeugt die Verschweißungen in dem Raster, wie in Figur 4 dargestellt.FIGS. 5 and 6 show, in a schematic partial section, the design of a welding stamp for producing the grid-type welds in a carrying bag. The welding stamp 14 works according to the thermal contact welding method with one-sided application of the weld seams to be produced or areas to be welded and is continuously heated. The contact surface of the welding stamp is profiled in accordance with the desired pattern of the welding pattern, ie for example the welds according to FIG. 4 are profiled. In the example shown are Elevations 12, also called welding heads, are designed according to the size of the punctiform surfaces 7 of the grid, between which the channels 13 are designed according to the shape of the desired grid 8, 18, see also FIG. 6. This profiled contact surface 12, 13 is fixed by a adjacent PTFE separating film 11 to prevent the weld metal from sticking. The welding stamp acts on the reinforcement sheet 3 as the top layer and produces the welds in the grid, as shown in FIG. 4.

Claims (8)

  1. Carrier bag made of thermoplastic plastics foil having handle holes in the bag walls and having handle hole reinforcement made of thermoplastic plastics foil, like reinforcement sheets, surrounding the handle holes and being bonded pattern-wise in partial areas with the bag walls, characterised in that the reinforcement foil (3a, 3b) and the bag walls (1a, 1b) are bonded with each other by means of point areas (7) which are arranged in a grid-like manner and are of a size of approximately 2 to 16 mm², and the ratio of the sum of the point areas (7) forming the bonded portions to the sum of the unbonded areas of the grid surface (20) is approximately 1 : 2 to 1 : 4.
  2. Carrier bag according to claim 1, characterised in that the grid has quadrilateral point areas.
  3. Carrier bag according to claim 1, characterised in that the grid has round point areas.
  4. Carrier bag according to one of the claims 1 to 3, characterised in that the rows (8, 18) of the grid, which are formed by the point areas (7), run perpendicular or approximately perpendicular to each other.
  5. Carrier bag according to one of the claims 1 to 4, characterised in that the rows (8, 18) of the grid, which are formed by the point areas (7), run at an angle α of approximately 45° to the longitudinal axis (6) of the carrier bag.
  6. Carrier bag according to one of the claims 1 to 4, characterised in that first rows (8) of the grid are arranged parallel to the longitudinal axis (6) of the carrier bag and the rows (18) of the grid which run approximately perpendicular thereto are arranged in a slightly concavely curved form in relation to the supporting edge (9) of the carrier bag.
  7. Carrier bag according to one of the claims 1 to 6, characterised in that in the region which is laterally adjacent the handle hole (2), in particular towards the bag base, there is a denser grid, that is bonding areas which are larger than in the other regions.
  8. Carrier bag according to claim 1, characterised in that the rows (8, 18) of the grid are at a distance (c, d) from each other, measured from their central axes, of approximately 3 to 10 mm.
EP87115864A 1986-11-05 1987-10-29 Carrier bag made of a thermoplastic foil Expired - Lifetime EP0266670B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87115864T ATE73083T1 (en) 1986-11-05 1987-10-29 CARRYING BAG MADE OF THERMOPLASTIC FILM.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19868629509 DE8629509U1 (en) 1986-11-05 1986-11-05
DE8629509U 1986-11-05
DE8708719U DE8708719U1 (en) 1987-06-24 1987-06-24
DE8708719U 1987-06-24

Publications (3)

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EP0266670A2 EP0266670A2 (en) 1988-05-11
EP0266670A3 EP0266670A3 (en) 1989-04-26
EP0266670B1 true EP0266670B1 (en) 1992-03-04

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EP87115864A Expired - Lifetime EP0266670B1 (en) 1986-11-05 1987-10-29 Carrier bag made of a thermoplastic foil

Country Status (4)

Country Link
EP (1) EP0266670B1 (en)
AT (1) ATE73083T1 (en)
DE (1) DE3777078D1 (en)
ES (1) ES2030032T3 (en)

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US11814225B2 (en) 2019-03-28 2023-11-14 The Glad Products Company Multi-film thermoplastic structures having visually-distinct contact areas arranged in text and methods of making the same
US11970310B2 (en) 2021-02-04 2024-04-30 The Glad Products Company Multi-film thermoplastic bags having grab zones with contact areas and methods of making the same

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Publication number Priority date Publication date Assignee Title
ITMI20000289A1 (en) * 2000-02-18 2001-08-18 Goglio Spa Luigi Milano FLEXIBLE MATERIAL CONTAINER WITH REINFORCED HANDLE TO AVOID LACERATION
ES2185470B1 (en) * 2001-01-05 2004-08-16 Amadeo Roige Bragulat BAG.
DK1574447T3 (en) * 2004-03-08 2008-09-15 Nordenia D Halle Gmbh Foil bag of a two or multilayer laminated foil with a punch for grip
EP1746044A1 (en) * 2005-07-21 2007-01-24 Hugo Beck Maschinenbau GmbH & Co. KG Packaging bag having a suspension hole and method for manufacturing the same

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GB1050347A (en) * 1962-07-28
DE1479356C2 (en) * 1962-07-31 1974-04-18 Herbert Kannegiesser Kg, 4973 Vlotho Device for attaching thin-walled films made of thermoplastic, or plastic-laminated, thin-walled flat structures, in particular textile flat structures, by thermal welding
DE1973348U (en) * 1967-09-12 1967-11-23 Windmoeller & Hoelscher SACK OR BAG, ESPECIALLY MADE OF PLASTIC FILM WITH HOLE HANDLES.
DE8708719U1 (en) * 1987-06-24 1987-08-20 Stiegler Gmbh Maschinenfabrik, 7062 Rudersberg, De

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11814225B2 (en) 2019-03-28 2023-11-14 The Glad Products Company Multi-film thermoplastic structures having visually-distinct contact areas arranged in text and methods of making the same
US11970310B2 (en) 2021-02-04 2024-04-30 The Glad Products Company Multi-film thermoplastic bags having grab zones with contact areas and methods of making the same

Also Published As

Publication number Publication date
ES2030032T3 (en) 1992-10-16
ATE73083T1 (en) 1992-03-15
EP0266670A2 (en) 1988-05-11
DE3777078D1 (en) 1992-04-09
EP0266670A3 (en) 1989-04-26

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