EP0192589B1 - Papiersack, insbesondere zum Verpacken von pulverigem oder körnigem Material - Google Patents

Papiersack, insbesondere zum Verpacken von pulverigem oder körnigem Material Download PDF

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Publication number
EP0192589B1
EP0192589B1 EP19860420034 EP86420034A EP0192589B1 EP 0192589 B1 EP0192589 B1 EP 0192589B1 EP 19860420034 EP19860420034 EP 19860420034 EP 86420034 A EP86420034 A EP 86420034A EP 0192589 B1 EP0192589 B1 EP 0192589B1
Authority
EP
European Patent Office
Prior art keywords
bag
paper
glueing
produced
gusset
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
Application number
EP19860420034
Other languages
English (en)
French (fr)
Other versions
EP0192589A1 (de
Inventor
Philippe Mougel
Michel Roche
Jean-Pierre Tavan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mondi Lembacel SAS
Original Assignee
Lembacel SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lembacel SA filed Critical Lembacel SA
Publication of EP0192589A1 publication Critical patent/EP0192589A1/de
Application granted granted Critical
Publication of EP0192589B1 publication Critical patent/EP0192589B1/de
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags

Definitions

  • the present invention relates to a paper bag, in particular for the packaging of powdered or granulated products, such as cement, plaster, or even food products such as powdered sugar or flour.
  • the bag in question is more especially a medium capacity bag, less than or equal to 10 kg, which must be easy to handle for the user, whose gripping must advantageously be carried out using a handle, which must have a stable support on one of its bottoms for its presentation in store, which must have a good seal in order to avoid the flow of products dirtying the external surface and altering the presentation, and which must finally have an appropriate spout with the possibility of splitting the emptying of the contents of the bag.
  • medium capacity bags include a crossed bottom which may include a filling valve, and another bottom closed by sewing. This technique allows the production of a bag having a triangular vertical section. Therefore, the ratio between the quantity of packaged products and the paper surface is not very interesting, the aesthetics are average, and the triangular shape makes it difficult to palletize full bags during their transport.
  • the closure by sewing provides a poor seal to the bag, the sewing holes allowing the passage of the product which comes to stain the outer faces of the packaging, which harms the presentation thereof, and in particular the decorative pattern. .
  • the present invention aims to remedy these drawbacks.
  • the bag it relates to, of the type produced from a bellows tube, that is to say from a tubular element comprising, when it is flat, two symmetrical folds towards the inside at its two edges, and the ends of which are closed by two bottoms, one of the two bottoms is produced by bonding the tubular element over a certain length, at the interior face of this element, this bonding being carried out between the walls facing the flat bag, including at the folds of the bellows, by bonding on the two facing walls of the tubular element of a paper reinforcing sheet, folded in half, of width less than the distance between the two bellows of the bag and of height at least equal to half the width of the bag, the fold of this sheet being located on the side of the closed end of the bag, the bottom closing being finally completed by a bonding bond between each fold of a bellows and the corresponding face of the bag, along an oblique line extending from the closed end of the bag towards the middle of the latter and from the central reinforcement sheet towards
  • This packaging has the advantage of being able to be filled from its end situated on the side opposite the bottom which has just been defined.
  • the sheet of paper forms a bridge which protects the transverse weld located at the end of the bag, and which avoids any risk of delamination of the latter under the effect of the pressure of the material.
  • the bottom takes a substantially rectangular shape, and gives the filled bag a substantially parallelepiped shape.
  • this bag is advantageous in the sense that the packaging is perfectly sealed, avoiding any leakage of products which may soil the outside face of the bag and in particular the advertising inscriptions carried thereon.
  • the parallelepiped shape is very advantageous because it allows the bag to stand upright, as well as the stacking of filled bags for transport.
  • the bridge sheet can be fixed against the inner tubular wall, or between two tubular walls corresponding to two different layers of the bag.
  • At least one handle is positioned so that its free ends are located between the sheet forming the reinforcement and one of the inner walls of the tube.
  • the various closings of the bottom considered of the bag are produced by reactivation of an adhesive of the “hot melt” type deposited on the internal face of the tubular element during the production of the latter.
  • the transverse end closure is produced using ribbed jaws transverse to the direction of the bag, ensuring the formation of stiffening grooves in the assembly.
  • a precut is formed, along the transverse closure zone and on the two flaps of the bellows, the opposite faces of the two flaps of the bellows for their part coated with permanent glue.
  • the bag is made from two layers of paper, is made at the glued end, a bonding reserve between the two thicknesses of paper directly above one oblique bonding lines, a vertical precut extending to the oblique bonding line, in the paper layer on the inside.
  • the user just has to move aside the outer layers of paper to access the inner ones, cut them out according to the precut, the inner sheets continuing to tear along the gluing lines to form the spout, after peeling of the two folds of the bellows which are in this case still coated with permanent adhesive.
  • the bag shown in the drawing is a medium capacity bag, that is to say intended to contain less than 10 kg of powdered or granulated products.
  • This bag (2) comprises a tubular body (3) having two lateral bellows (4) each of which consists of two flaps (5) connected to one another by a central fold (6) and each connected to the one of the side faces (7) by a fold (8).
  • One (9) of the bottoms is a square bottom equipped with an automatic filling valve, while the other bottom (10) of shape corresponding to that of the bottom (9) is equipped with a grip handle (12 ). From a practical point of view, the inner face of the tubular element forming the bag is coated, on the bottom side (10) over a height greater than half the width of the bottom to be obtained, with an adhesive (13 ) of the “hot melt” type.
  • a paper sheet (14), of reinforcement, of width at most equal to the distance between the folds (6) of the two bellows (4) is placed inside the bag, such so that its central fold (15) is disposed on the side of the open end thereof, but set back about 2 cm from the opening.
  • the free ends (16) of the handle are also slid inside the bag, for example between the reinforcing sheet (14) and the inside wall of the latter.
  • the bag is closed by reactivating the adhesive (13) by pinching between jaws.
  • the jaws are shaped to form a bonding of ribs (17) with care on a strip (18) extending over the entire width of the bag, at the free end thereof.
  • the jaws are also shaped to reactivate the glue at the reinforcement sheet (14) to ensure the fixing of the latter on the inside of the bag.
  • the adhesive is reactivated along two oblique lines (19) each extending between a flap (5) of a bellows (4) and the corresponding side wall (7), each oblique line being inclined from the line (18) towards the middle of the bag and from the central fold (6) of the bellows considered towards the corresponding fold (8).
  • a perfectly waterproof bag is thus obtained, which can be filled by its bottom (9) and which takes, during filling, a parallelepiped shape, this without risk of deterioration of the bonding (18), which is perfectly protected by the reinforcement sheet (14).
  • the two flaps (5) of a bellows (4) have a pre-cut line (20) disposed below the adhesive strip (18).
  • the walls opposite the flaps (5) are coated, in the zone corresponding to the glued strip (18), with dots of permanent glue (22).
  • the user need only tear the precut (20) and take off the flaps (5) to provide a pouring spout (23). If the contents of the bag are not emptied during a single operation, the spout (23) can be retracted inward and the two upper edges of the bellows, coated with permanent adhesive, reapplied one against the other.
  • Figures 8 and 9 show an alternative embodiment of the spout in the case of a bag consisting of two layers of paper.
  • the invention brings a great improvement to the existing technique by providing a bag whose tight closure, and obtained simply, allows the production of an extremely resistant parallelepiped bag.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)

Claims (6)

1. Papiersack, der aus einem Balgenschlauch hergestellt ist, d. h. einem schlauchförmigen Element, das in flachem Zustand im Bereich seiner beiden Kanten zwei symmetrische, nach innen gerichtete Falteinschläge (4) besitzt und dessen Enden durch zwei Böden geschlossen sind, dadurch gekennzeichnet, daß einer der beiden Böden durch eine über eine bestimmte Länge des schlauchförmigen Elements auf dessen Innenseite verlaufende, zwischen den einander gegenüberliegenden Wandungen des flachliegenden Sacks einschließlich des Bereichs der Falteinschläge ausgeführte Klebung (18) sowie dadurch gebildet ist, daß ein in zwei Teile gefaltetes Blatt (14) aus Verstärkungspapier, dessen Breite kleiner ist als der Abstand zwischen den beiden Balgen des Sacks und dessen Höhe wenigstens halb so groß ist wie die Breite des Sacks, auf die beiden einander gegenüberliegenden Wandungen des schlauchförmigen Elements geklebt ist, wobei die Falz (15) des Blatts (14) aus Verstärkungspapier sich auf der Seite des geschlossenen Endes des Sacks befindet, und wobei das Schließen des Bodens durch eine Klebeverbindung zwischen jedem Falteinschlag eines Balgens und der zugehörigen Seite des Sacks längs einer schrägen Linie vervollständigt wird, die von dem geschlossenen Ende des Sacks in Richtung auf seine Mitte und von dem zentralen Blatt aus Verstärkungspapier zu der zugehörigen Außenkante des Sacks verläuft.
2. Sack nach Anspruch 1, dadurch gekennzeichnet, daß wenigstens ein Handgriff (12) vorgesehen ist, der derart positioniert ist, daß seine freien Enden (16) zwischen dem Blatt (14) aus Verstärkungspapier und einer der Innenwandungen des Schlauchs liegen.
3. Sack nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, daß die verschiedenen Verschlüsse (18, 19) des betrachteten Sackbodens durch Reaktivieren eines Heißschmelzklebers hergestellt sind, der bei der Herstellung des schlauchförmigen Elements auf dessen Innenseite aufgetragen wird.
4. Sack nach Anspruch 3, dadurch gekennzeichnet, daß der transversale Endverschluß (18) mit Hilfe von Klemmbacken mit quer zur Richtung des Sacks verlaufenden Rippen hergestellt wird, die die Bildung von Verstärkungsnuten bewirken.
5. Sack nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß auf wenigstens einem der beiden Balgen (4) eine vorgeschnittene Aufreißlinie (20) vorgesehen ist, die längs der transversalen Verschlußzone (18) und über die beiden Klappen (5) des Balgens verläuft, und daß die einander gegenüberliegenden Seiten der beiden Klappen des Balgens ihrerseits mit permanentem Klebstoff beschichtet sind.
6. Sack nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß für den Fall, daß der Sack aus zwei Papierlagen hergestellt wird, in Höhe des verklebten Endes eine Klebstoffreserve (24) zwischen den beiden Papierschichten über einer der schrägen Klebungslinien (19) vorgesehen ist und daß eine vertikale vorgeschnittene Aufreißlinie (25) in der auf der Innenseite liegenden Papierschicht angebracht ist, die sich bis zu der schrägen Klebstofflinie erstreckt.
EP19860420034 1985-02-05 1986-02-04 Papiersack, insbesondere zum Verpacken von pulverigem oder körnigem Material Expired EP0192589B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8501994 1985-02-05
FR8501994A FR2576878B1 (fr) 1985-02-05 1985-02-05 Sac en papier, notamment pour le conditionnement de produits pulverulents ou granules

Publications (2)

Publication Number Publication Date
EP0192589A1 EP0192589A1 (de) 1986-08-27
EP0192589B1 true EP0192589B1 (de) 1987-09-09

Family

ID=9316196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19860420034 Expired EP0192589B1 (de) 1985-02-05 1986-02-04 Papiersack, insbesondere zum Verpacken von pulverigem oder körnigem Material

Country Status (4)

Country Link
EP (1) EP0192589B1 (de)
DE (1) DE3660002D1 (de)
ES (1) ES292005Y (de)
FR (1) FR2576878B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012006581U1 (de) 2012-07-07 2013-09-17 Bischof + Klein Gmbh & Co. Kg Beutel aus flexiblem Material, insbesondere aus Papier oder Papierverbundmaterial

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2197490A (en) * 1936-04-16 1940-04-16 Benjamin C Betner Company Sealed bag and method of producing it
FR1050640A (fr) * 1952-02-08 1954-01-08 Perfectionnement à la fabrication des sacs d'emballage
US3484037A (en) * 1968-04-19 1969-12-16 Emanuel Kugler Bag with unfolding insert
GB1237350A (en) * 1968-06-14 1971-06-30 Heinz Focke Bag of plastics sheeting, for containing tobacco or the like
US3663239A (en) * 1969-04-07 1972-05-16 Nabisco Inc Toaster packages having four spouts
DE1923783A1 (de) * 1969-05-09 1970-11-19 Labek Dr Alfred Tragtasche mit Verschlussklappe
FR2093218A5 (de) * 1970-06-05 1972-01-28 Flexico France Sarl
FR2543110B1 (fr) * 1983-03-21 1986-06-06 Vygon Sachet de conditionnement de produits steriles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202012006581U1 (de) 2012-07-07 2013-09-17 Bischof + Klein Gmbh & Co. Kg Beutel aus flexiblem Material, insbesondere aus Papier oder Papierverbundmaterial

Also Published As

Publication number Publication date
FR2576878A1 (fr) 1986-08-08
EP0192589A1 (de) 1986-08-27
ES292005Y (es) 1987-01-16
DE3660002D1 (en) 1987-10-15
ES292005U (es) 1986-05-16
FR2576878B1 (fr) 1987-04-17

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