EP0796800A1 - Poche pour des matériaux liquides, pâteux, granulaires ou pulvérulents ou pour des petits objets - Google Patents

Poche pour des matériaux liquides, pâteux, granulaires ou pulvérulents ou pour des petits objets Download PDF

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Publication number
EP0796800A1
EP0796800A1 EP97103921A EP97103921A EP0796800A1 EP 0796800 A1 EP0796800 A1 EP 0796800A1 EP 97103921 A EP97103921 A EP 97103921A EP 97103921 A EP97103921 A EP 97103921A EP 0796800 A1 EP0796800 A1 EP 0796800A1
Authority
EP
European Patent Office
Prior art keywords
film
edges
packaging bag
side walls
film sections
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
Application number
EP97103921A
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German (de)
English (en)
Other versions
EP0796800B1 (fr
Inventor
Rodney Haydn Imer
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0796800A1 publication Critical patent/EP0796800A1/fr
Application granted granted Critical
Publication of EP0796800B1 publication Critical patent/EP0796800B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/008—Standing pouches, i.e. "Standbeutel"
    • 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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/08—Bags or like containers made of paper and having structural provision for thickness of contents with block bottoms

Definitions

  • the invention relates to a packaging bag for liquid, pasty and granular or powdery substances or small parts with a front wall, a rear wall, at least one side wall and a floor, these walls being arranged essentially in planes perpendicular to the floor plane and the bag made of thin film sections flexible material, in particular plastic material is constructed, and each of the front wall and the rear wall forming film sections with the film sections forming the side walls are connected to each other at their edges by a welded or glued seam such that the outer edges of the respectively connected edges in the same direction point.
  • foil packs are known, among which there are different forms of stand-up pouches. As far as the stand-up pouches are concerned, they all have a complex shape in the bottom area of the pack; a shape that is necessary to give the package the necessary stability, especially when the package is filled with liquid. As a result of complicated base configurations, these known packs require a relatively large amount of film material for the given filling quantity.
  • various existing packages have vertical reinforcing ribs that are intended to provide stability to the package, but in some cases this stability is weakened by the method of folding the sides down so that the bottom of the package can be formed. In other cases, the walls are brought together with the floor in such a way that a stiffer foil material is required in order to achieve the desired stability.
  • the invention has for its object to provide a stable, standing packaging bag in a rectangular shape in particular with the features specified above made of thin film material, which requires a minimum of film area in relation to the filling volume of the pack and which also uses thinner film material due to the structured shape can be as with existing stand-up pouches.
  • the packaging bag according to the invention has the further advantage that it can be filled and sealed at high speeds which are comparable to the filling and sealing speeds for cans and glass containers. This ability, which is achieved by the special bottom shape of the packaging bag according to the invention, combined with the production method which creates an open, box-like shape which can be transported stably and at high speeds with the aid of conveyor belt devices.
  • the invention provides solutions to overcome the limited uses of existing flexible film packaging forms by providing a thin, flexible film pack that uses less material than existing forms, in a package that can be transported at a much higher rate when empty and is to be filled as existing packs.
  • the basic idea of the invention is a package which, in the open state (before it is filled and sealed), has a particularly cubic-rectangular shape and consists of four rectangular walls, to which the bottom is integrally connected without any connection between the walls and the bottom being necessary is.
  • a preferred embodiment of the invention consists in a packaging bag with a cubic-rectangular shape and rectangular bottom.
  • other shapes with a triangular or polygonal base are also possible.
  • the side walls are bonded to the front and rear walls at the vertical corners of the package, welded or connected by other known methods, so that the connection results in vertical reinforcing ribs as are generally known.
  • These ribs have a width of up to 10 mm or more, but mostly about 3 to 8 mm.
  • the floor consists of a single layer of film that is integral with all four walls.
  • the packaging bag can be produced from a single layer of film using the following procedure, which is laid out on a work surface.
  • a vertical fitting is placed thereon, the cross-sectional dimensions of which are identical to the inner cross-sectional dimensions of the pack.
  • the fitting is placed exactly over the section of the film that will later be the bottom the package is to form, and the walls are pressed against the molding by folding up the foil sections which are to form the walls.
  • the vertical corners of the pack are formed on the lines where the edges of each wall meet the neighboring walls.
  • the foils of the meeting walls are connected and thus form the vertical stiffening ribs.
  • the package which is now in its cubic-rectangular state, can either be filled through the vertical inner fitting and then sealed at the top, or it can also be pulled off the fitting, transported to the filling station and only then filled and sealed.
  • the latter option is preferred, because in this way filled packs can be produced at a higher production rate (by using several fittings and several filling stations) than is possible by filling via the vertical inner fitting with the subsequent sealing.
  • the final sealing of the top could be done by known methods, or in the case of filling through the inner fitting, other sealing methods such as e.g. with preformed lids or with flat foils.
  • FIG. 1 shows a piece of film 1 for producing a packaging bag on which the film sections which are to form the vertical walls, namely a film section 2.1 for the front wall, a film section 2.3 for the rear wall and film sections 2.2 and 2.4 for the side walls are indicated as recorded lines .
  • a shaped piece 3 is arranged above the film section 4, which is to form the bottom of the pack.
  • Fig. 2 shows a further stage of the manufacturing process for the packaging bag after the film sections 2.1 to 2.4 up to the inner molding 3 have been tet to form the vertical walls.
  • the vertical walls are connected to one another at their vertical edges along the dashed lines 5 by means of known methods using welded or adhesive seams, that in each case the outer edges of the interconnected edges point in the same direction and vertical stiffening ribs 7 are thus formed on the four vertical edges of the pack, as are shown, for example, in FIGS. 5, 6, 8 and 9 and further below with reference to of these figures will still be described.
  • the piece of film 1 forms a complete rectangle.
  • the bag-like excess parts of the film designated 1.1 in FIG. 2, are cut off (see FIG. 2).
  • FIG. 3 The output stage of another embodiment of the manufacturing process for the packaging bag is shown in FIG. 3.
  • a piece of film 6 has already been prepared and cut into a cross shape, each arm of the cross corresponding to the width of one of the finished walls 2.1 ', 2.2', 2.3 'and 2.4', plus the width of the vertical reinforcing ribs 7.
  • the front wall 2.1 ' , the rear wall 2.3 'and the side walls 2.2' and 2.4 ', ie the arms of the cross are then folded up against the inner molding 3 and the edges of the vertical walls are along the dashed lines 5 shown in Fig. 5, as already above described, connected.
  • the shaped piece 3 for forming the package can be arranged on the piece of film 1 'or 1' 'in such a way that its horizontal edges either parallel to the corresponding side edges of the piece of film 1', as shown in FIG. 4 , where the position of the cross 6 'shown in Fig. 4 arises, or the horizontal edges can enclose an angle, for example of 45 °, with the corresponding edges of the film piece 1', whereby a position of the cross 6 '' arises as they do is shown in Fig. 4A.
  • the proportion of film waste i.e. of the part of the film that will be removed later can be reduced.
  • FIG. 5 shows a finished packaging bag produced by the manufacturing method according to FIGS. 1 and 2 or FIG. 3 before filling and closing.
  • Fig. 6 shows a packaging bag similar to that of Fig. 5 made of transparent material, it being easy to see that the bottom 4 of the package consists of a single film layer and no welds or adhesive seams are necessary at the transitions between the bottom and the vertical walls are, but an integral connection of the film material is available. 6 also shows the vertical reinforcing ribs 7, which ensure that the packaging bag stands upright.
  • FIG. 7 The integral transition between the floor 4 and the vertical walls can also be clearly seen from FIG. 7, in which the area 8 in which the floor 4 merges into the front wall 2.1 is shown enlarged. 8, in which the area 9 is shown enlarged, in which the rear wall 2.3 is connected to the side wall 2.4, the formation of the reinforcing transverse ribs 7 can be clearly seen.
  • the two outwardly facing parts of walls 2.3 and 2.4 are shown slightly apart for clarity only. They are welded together when the package is shaped. The formation is the same on all four vertical edges.
  • the packaging bag can assume any rectangular shape in the horizontal cross section or also triangular or polygonal shapes with a wide variety of aspect ratios.
  • FIG. 9 shows an embodiment of a packaging bag according to FIG. 6, which is ready on its upper side for sealing after filling.
  • the design on the top and the closure take place in such a way that the upper ends 2a of the film sections of the side walls are folded inwards and the upper edges of the film sections 2b of the front and rear walls are sealed with one another over the entire length of the top edge of the bag and with at least are connected to the inner surfaces of the inwardly folded side walls.
  • FIG. 6 shows three further embodiments of a packaging bag according to FIG. 6, in which the closure takes place at the top by means of an attached, essentially rectangular lid 10 or 10 'or 10' ' .
  • the edges of the cover are connected to the upper edges of the front wall 2.1, the rear wall 2.3, and the side walls 2.2 and 2.4 by a welded or glued seam 12 or 12 'or 12' 'in such a way that they are analogous to the reinforcing ribs 7 the outer edges of the edges connected to each other point in the same direction.
  • this configuration can be such that the weld or adhesive seam 12 points upwards (FIGS. 10 and 11) or it can be such that the weld or glue seam 12 'points obliquely upwards to the side (FIGS. 10A and 11A) or horizontally to the side (FIGS. 10B and 11B).
  • the lid 10 or 10 'or 10' 'can consist of the same film material as the packaging bag itself. However, a different material can also be used.
  • FIGS. 12, 12A and 12B a manufacturing method of the packaging bag described above is described with reference to FIGS. 12, 12A and 12B, in which considerably less film waste occurs than in the explained one Method.
  • the representation in FIG. 12 is analogous to the representation in FIG. 3.
  • a prerequisite for this method is that the two film strips can be welded or glued to one another at least on the surfaces facing one another.
  • the side walls 2.2 '''and2.4''' are formed from the film strip 2 '''and the front wall 2.1''''and the rear wall 2.3''''from the film strip 2''''.
  • the bottom 4 ′′ is formed in the overlapping area of the two superimposed film strips.
  • the above-mentioned shaped part 3 ′′ is arranged above this area.
  • the two film strips 2 ′′ ′′ and 2 ′′ ′′ are welded to one another on their partially facing surfaces to form the bottom 4 ′′. As can be seen in FIG. 12A, this welding takes place in partial regions 21 which, in the folded state, lie perpendicular to the plane of the bottom 4 ′′ in the region of the lower edges of the bag.
  • the front wall 2.1 '''', the rear wall 2.3 '''' and the side walls 2.2 '''and2.4''' are folded up against the shaped piece 3 '' and attached to the vertical reinforcing ribs 7 '' welded or glued together.
  • the bag then has the same shape as that described in the previous embodiments (see FIG. 12B).
  • 12A shows the bottom region of the bag in the region of a horizontal edge.
  • the two film strips 2 ′′ ′′ and 2 ′′ ′′ are welded or glued to one another.
  • the described packaging bag made of a thin film material has a bottom which consists of a single layer of said material and which is integrally connected to all four side walls of the pack, which in turn in the vertical solder plane at its edges are welded together in such a way that their composite forms vertical stiffening ribs, as are generally known, and which, together with the special shape of the bottom, give the packaging bag its stability, so that it is suitable for packaging liquids, powders, granules and coarse-grained materials or smaller ones Objects.
  • the packaging bag can be manufactured, shaped, filled and sealed at a much higher production rate than similar stand-up bags mentioned at the beginning.
  • the described packaging bag has the advantage that it can be shaped, filled and sealed by various systems known in the art. For example, as described, there is a filling through the inner vertical molding and a subsequent sealing in the same shaping device possible, or the packaging bag can be removed from the molding after shaping and filled and sealed in a separate filling station in a next process step at a later time.
  • the packaging bag has no hems, seams or joints on the bottom, which considerably reduces the number of places where leaks can occur due to poor sealing.
  • the bottom of the packaging bag is absolutely flat, without any overhangs, lugs or projections and the packaging bag can therefore be transported within the production process via conveyor belts or similar means without getting caught on parts of the devices.
  • the packaging bag In its finished form, the packaging bag has considerably less material than other packs of this type, and thus significantly reduces the amount of material to be disposed of after use.
  • the reduction in material compared to other known packs of this type is due to the very efficiently structured shape. Savings of more than 10% of the material area combined with further savings in terms of the thickness of up to 20% are possible, which means total savings of the material quantity of up to 30%.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
EP97103921A 1996-03-21 1997-03-08 Poche pour des matériaux liquides, pâteux, granulaires ou pulvérulents ou pour des petits objets Expired - Lifetime EP0796800B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29605278U DE29605278U1 (de) 1996-03-21 1996-03-21 Verpackungsbeutel für flüssige, pastöse und körnige oder pulverförmige Stoffe oder Kleinteile
DE29605278U 1996-03-21

Publications (2)

Publication Number Publication Date
EP0796800A1 true EP0796800A1 (fr) 1997-09-24
EP0796800B1 EP0796800B1 (fr) 2000-06-28

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP97103921A Expired - Lifetime EP0796800B1 (fr) 1996-03-21 1997-03-08 Poche pour des matériaux liquides, pâteux, granulaires ou pulvérulents ou pour des petits objets

Country Status (4)

Country Link
US (3) US5842790A (fr)
EP (1) EP0796800B1 (fr)
AT (1) ATE194119T1 (fr)
DE (2) DE29605278U1 (fr)

Families Citing this family (107)

* Cited by examiner, † Cited by third party
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Also Published As

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US6261215B1 (en) 2001-07-17
EP0796800B1 (fr) 2000-06-28
US5842790A (en) 1998-12-01
DE29605278U1 (de) 1997-07-17
ATE194119T1 (de) 2000-07-15
US6036365A (en) 2000-03-14
DE59701923D1 (de) 2000-08-03

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