EP1748932A1 - Sachet a fond plat, a plis lateraux rentrants - Google Patents

Sachet a fond plat, a plis lateraux rentrants

Info

Publication number
EP1748932A1
EP1748932A1 EP05732399A EP05732399A EP1748932A1 EP 1748932 A1 EP1748932 A1 EP 1748932A1 EP 05732399 A EP05732399 A EP 05732399A EP 05732399 A EP05732399 A EP 05732399A EP 1748932 A1 EP1748932 A1 EP 1748932A1
Authority
EP
European Patent Office
Prior art keywords
stand
strip
pouch
front wall
rear wall
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.)
Withdrawn
Application number
EP05732399A
Other languages
German (de)
English (en)
Inventor
Jakob Schneider
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.)
Lemo Maschinenbau GmbH
Original Assignee
Lemo Maschinenbau GmbH
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 Lemo Maschinenbau GmbH filed Critical Lemo Maschinenbau GmbH
Publication of EP1748932A1 publication Critical patent/EP1748932A1/fr
Withdrawn legal-status Critical Current

Links

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
    • 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 invention relates to a stand-up pouch made of a thermoplastic film with a front wall and a back wall, which are connected to one another by side seams to form a filling opening and a bottom folded in when the bag is folded, the folded bottom having a front wall envelope and a rear wall envelope and the two envelopes are also welded into the side seams and that in the area of the folded-in bottom there is an erection strip which consists of a plastic foil which is stiffer in contrast to the plastic film of the bag, and that the erection strip ends at a distance from the side seams.
  • Stand-up pouches which are also called block-bottom pouches, are generally known.
  • a generic stand-up pouch is described in German utility model DE 88 12 261.
  • the stand-up pouch described is formed from a front wall and a rear wall, which are welded on their long sides by means of side weld seams.
  • this bag has a folded bottom, which is reinforced by means of a glued-up strip.
  • the tab on the bottom of the bag allows the bag to have sufficient rigidity to allow it to be set up and to hold the unfolded bottom in the unfolded position.
  • the mounting strip can be glued on the inside or outside.
  • the bag can also be designed with carrying loops. Since the bottom of such bags is made reinforced, but the front and rear walls of such bags are made of thin-walled plastic films, depending on the product to be filled in, difficulties can arise when filling the bag.
  • the invention is therefore based on the object of developing a stand-up pouch which is easy to fill and easy to open and which has increased stability.
  • the stand-up pouch to be developed should be easy to manufacture and be inexpensive to manufacture.
  • the object of the invention is at the same time to develop a method for the production of a corresponding stand-up pouch.
  • the object according to the invention is achieved in that a stiffening strip is applied, in particular glued, to the front wall and to the rear wall in the region of the filling opening on the inside and / or outside.
  • a stiffening strip according to the invention in the area of the filling opening, the possibility is now created to reinforce a stand-up pouch in such a way as to realize easy opening and keeping it stable in shape.
  • the stand-up pouch according to the invention is also very easy to manufacture and to manufacture with minimal additional effort, since the supply of a reinforcement strip, in the form of a stiffening strip, can easily be carried out within existing production systems or can be integrated into a production system.
  • the stiffening strip By introducing a stiffening strip in the area of the filling opening of the stand-up pouch, not only is the filling and opening easier, but also the handling of the filled pouch. If, as proposed in one embodiment of the invention, the filling area is provided with a grip hole, the stiffening strip additionally serves as a grip hole reinforcement.
  • the stiffening strip is removed from each side seam as far as the bottom fold is high when folded. If the height of the bottom fold depth as the distance to the respective edge, i.e. to the side seam of the bag, is observed, the bag can be opened easily and the opened bag then has almost the shape that defines the base of the erection strip on the bottom of the bag. Such a bag is easy to fill and is dimensionally stable in the filling opening due to the stiffening strips.
  • a stand-up pouch with a bottom seam and a stiffening strip inserted in the area of the filling opening.
  • the reinforcement strips in which case in particular the erection and stiffening strips are addressed, are applied to the bottom and into the filling opening on both layers of film.
  • the tube is then formed by means of a longitudinal welding process, as the first welding process to form the stand-up pouches.
  • the process engineering sequence of the individual production steps now creates the possibility of producing a stand-up pouch according to claims 1 to 9 with minimal effort.
  • the introduction of the stiffening strips and the mounting strip into the flat plastic film web offers the advantage that the strips are easy to apply, preferably to stick on.
  • the original process sequence is changed only slightly, so that the process can be easily integrated into existing production systems.
  • FIG. 1 shows the three-dimensional view of a stand-up pouch designed according to the invention in the folded state
  • FIG. 2 shows a section through the stand-up pouch according to FIG. 1
  • FIG. 3 shows a unfolded stand-up pouch in a three-dimensional view
  • FIG. 4 shows a front view of a stand-up pouch according to FIG. 3
  • FIG. 5 3 shows a three-dimensional view of an embodiment of a bag according to the invention in the form of a carrier bag
  • FIG. 6 shows a basic illustration of a method for producing a stand-up bag according to the invention
  • FIG. 7 shows a three-dimensional view of a stand-up pouch with a bottom seam
  • FIG. 8 shows a basic illustration of a method for producing a stand-up pouch with a bottom seam
  • FIG. 1 shows a stand-up pouch 1 consisting of a front wall 2, a rear wall 3, a double-layered area 4 of the front wall 2 and a double-layered area 5 of the rear wall 3, a bottom fold 6, a set-up strip 7 and a stiffening strip being attached to the bottom fold 6 8, which is shown hidden in this basic drawing only in the double-layer area 4 of the front wall 2.
  • the front wall 2 and the rear wall 3 are connected by means of two side seams 9. In this case, only the side weld seam 9 can be seen in FIG.
  • the double-layered areas 4, 5 of the front wall 2 and the rear wall 3 and the bottom fold 6 can thus be clearly seen.
  • the double-layered area 4, 5 is formed by transverse weld seams 10, 11 running transversely to the bag 1.
  • the bottom gusset 6 was introduced before the side seams 9 were welded, so that the bottom gusset 6 is connected to the side weld seam 9.
  • a grip hole 13 is made in the double-layered area 4, 5, which also forms the filling opening 12 at the same time.
  • the grip hole 13 which extends through the front wall 2, the stiffening strip 8, the double-layered area 4, the double-layered area 5 of the rear wall, the stiffening strip of the rear wall and the rear wall 3, the stand-up pouch can be easily gripped and transported.
  • the illustrated embodiment of the grip hole 13 is of course not binding, it goes without saying that all known grip hole shapes 13 can be introduced into the stand-up pouch 1 according to the invention.
  • FIG. 2 which represents a section according to the invention through the stand-up pouch 1 according to FIG. 1, the concept of the bottom fold depth B is to be explained.
  • the bottom fold depth B results from the height of the bottom 6 folded in when the bag is in the folded state.
  • a stand-up pouch 1 according to the invention is now provided with an erection strip 7 in which the distance to each side of the side weld 9 corresponds to the height of the bottom fold depth, this results in a Stand-up pouches as shown in FIG. 3.
  • the areas of the front wall 2 and the rear wall 3 which project laterally beyond the area of the stand-up strip 8 and the stiffening strip 7 form the side surfaces 14, 15 in the unfolded state of the stand-up pouch.
  • the strips 7, 8 serve for this purpose one as a reinforcement strip 7, 8 for stabilizing the bag 1 and at the same time the rear wall 3 and the front wall 2 can be moved over the ends 16 of the stiffening strip 8 and the ends 17 of the erection strip 7 in the direction of Side walls 14, 15 are folded or kinked.
  • the result is a box-shaped stand-up pouch.
  • FIG. 4 shows the front view of a stand-up pouch 18, according to arrow IV from FIG. 3.
  • the erection strip 19 and the stripping strip 20 are each at a distance B, namely exactly the height of the bottom pleat depth B corresponding to the side weld seams 21, 22 of the stand-up pouch 18.
  • the erection strip 19 and the stiffening strip 20 do not necessarily have to have the same length.
  • the stiffening strip 20 can also extend over the entire width L of the stand-up pouch 18, as is indicated by the dashed line 23.
  • the unfolded stand-up pouch would not assume a square shape, but the filling area 12 would be able to be pulled out in the middle in the manner of a ship's hull.
  • the shape results from the fact that the stiffening strips 20 have a higher stability than the plastic film of the front wall 2 and rear wall 3 forming the stand-up pouch 18.
  • a stiffening is generated by the stiffening strips 20, which is stabilized at its ends by the side weld seams 21, 22. If these two stiffening strips 20 are pulled apart in the middle of the bag 18, the shape described as the ship's hull results.
  • the stand-up pouch 18 according to FIG. 4 is also equipped with a double-layer filling opening.
  • the filling area or the filling opening of the bag 18 can also be formed on a single-layer front wall and rear wall.
  • the stiffening strip 20 can be applied to the front wall and the rear wall from the inside or the outside. An adhesive method is preferably used to apply the stiffening strips 20.
  • the mounting strip 19 can also be glued to the inside or the outside of the bottom of the stand-up pouch 18.
  • the stand-up pouch 24 can also be designed as a carrying bag 24, as shown in FIG. 5.
  • FIG. 5 shows an isometric view of a carrying bag 24 provided with a stiffening strip 25 according to the invention.
  • the Trageta- see 24 is equipped with loops 26, 27.
  • the filling opening 28 is designed in two layers.
  • the stiffening strip 25 extends only over part of the width (L) of the bag, but can also be introduced into the carrying bag 24 over the entire width L and is then welded to the side weld seams 29.
  • the carrying loops 26, 27 are welded in the double-layered area of the filling opening 28 but below the stiffening strip 25.
  • the welding time during the production of the carrying bag 24 does not negatively influence the cycle times.
  • the carrying bag 24 can be manufactured at the same speed, since only the carrying loop 26, 27 has to be welded to the double-layered area and the stronger material of the stiffening strip 25 does not have to be melted on.
  • the plastic film for producing the front wall and rear wall of the stand-up pouch 24 is made of a plastic film with a thickness of preferably 50 ⁇ m and the stiffening strip 25 with a thickness of approximately 100-200 ⁇ m. Welding the carrying loops 26, 27 in the area of the stiffening strip 25 would thus have a negative effect on the cycle time.
  • FIG. 6 shows a possible basic sequence of production for producing a stand-up pouch 30 equipped with a single-layer filling area.
  • the stiffening strips 32 and the mounting strips 33 are glued onto the flat or flat mother foil 31 which is introduced into the production machine. Since the strips 32, 33 are fed in the direction of web travel, any setting of the length of the strips 32, 33 in relation to the length L of a stand-up pouch 30 can be set.
  • the stiffening strips 32 can thus extend over the entire length L of the stand-up pouch 30 or only over a short grip hole area 13. After the strips 32, 33 have been fed and glued, the plastic film web 31 is folded to form the front wall 34 and the rear wall 35 of the stand-up pouch forming 30.
  • the bottom fold 36 is molded into the stand-up pouch 30 to be formed.
  • the plastic film web 31 is welded so that the side seams of the stand-up pouch 30 form.
  • the mother film 31 is separated, so that separate stand-up pouches 30 are formed. In this case, the separation of the mother film 31 would take place where the two bags 30 are divided by the line of symmetry 39.
  • FIG. 7 Such a bag 39 is shown in FIG. 7.
  • the bag 39 is formed from a front wall 40 and a rear wall 41, the lateral ends of the front wall 40 and the rear wall 41 being folded in to form side folds 42, 43.
  • a separate mounting strip 44 and a stiffening strip 45 are glued to the inside of the front wall 40 and the rear wall 41.
  • the erection strip 45 is moved in the direction of the front wall or the rear wall and the lower regions of the front wall 40 and the back wall 41 form the bottom of the stand-up pouch after being unfolded.
  • the side folds 42, 43 are also unfolded and the square shape of the stand-up pouches according to FIG. IV described above, in which the bottom 6 is formed from a bottom fold 6, also results.
  • the stiffening strip 45 and the mounting strip 44 are spaced at least by the width S, which corresponds to the height of the side gussets 42, 43, from the side weld seams 46, 47.
  • the front wall 40 and the rear wall 41 of the stand-up pouch 39 are connected to the floor by means of a bottom seam 48.
  • the stand-up pouch 39 is formed from two separate mother foils 49, 50. At the appropriate distance H of the stand-up pouches 39 to be produced, stand-up strips 44 and stiffening strips 45 are each applied separately and separately to the mother foils 49, 50. The strips 44, 45 are preferably glued onto the mother film 49, 50. The side ends 46, 47 of the mother foils 49, 50 are then welded together to form them. After welding, there is a film tube into which the side folds 42, 43 are introduced in the next step.
  • the side folds 42, 43 are folded over according to the distance S, the erection strips 44 and the stiffening strips 45 not being folded in, but rather being arranged in their entirety on the front wall 40 and the rear wall 41. Finally, the bottom seam 48 is introduced into the film tube and at the same time a finished bag 39 is separated from the film tube.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)

Abstract

L'invention concerne un sachet à fond plat, à plis latéraux rentrants, à base d'un film thermoplastique (31), comportant une paroi avant (2, 34) et une paroi arrière (3, 35), interconnectées par des soudures latérales (9, 21, 22, 29), de manière à former une ouverture de remplissage (12, 28), ainsi qu'un fond (6, 36) qui est replié lorsque le sachet (1, 18, 24, 30) est à l'état plié. Le fond replié (6, 36) présente un rabat de paroi avant (37) et un rabat de paroi arrière (38) et les deux rabats (37, 38) sont intégrés par soudage dans les soudures latérales (9, 21, 22, 29). Une bande de montage (7, 33) est disposée dans la zone du fond replié (6, 36) et se compose d'un film plastique renforcé (7, 19, 33). Ladite bande de montage (7, 19, 33) se termine à distance (B) des soudures latérales (9, 21, 22, 29). Une bande de raidissement (8, 20, 25, 32) est appliquée, notamment collée, sur la paroi avant (2, 34) et sur la paroi arrière (3, 35), dans la zone de l'ouverture de remplissage (12, 18) de la face intérieure et/ou de la face extérieure.
EP05732399A 2004-05-13 2005-04-22 Sachet a fond plat, a plis lateraux rentrants Withdrawn EP1748932A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004024005A DE102004024005A1 (de) 2004-05-13 2004-05-13 Standbodenbeutel
PCT/EP2005/004347 WO2005110878A1 (fr) 2004-05-13 2005-04-22 Sachet a fond plat, a plis lateraux rentrants

Publications (1)

Publication Number Publication Date
EP1748932A1 true EP1748932A1 (fr) 2007-02-07

Family

ID=34964637

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05732399A Withdrawn EP1748932A1 (fr) 2004-05-13 2005-04-22 Sachet a fond plat, a plis lateraux rentrants

Country Status (4)

Country Link
US (1) US8267580B2 (fr)
EP (1) EP1748932A1 (fr)
DE (1) DE102004024005A1 (fr)
WO (1) WO2005110878A1 (fr)

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US9039590B2 (en) * 2012-02-08 2015-05-26 Inteplast Group Inc. Internally reinforced header bag
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US10322851B2 (en) * 2016-12-14 2019-06-18 Ah Moi TAN Self-supporting plastic bag and method for manufacturing same
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Also Published As

Publication number Publication date
US8267580B2 (en) 2012-09-18
US20070071370A1 (en) 2007-03-29
WO2005110878A1 (fr) 2005-11-24
DE102004024005A1 (de) 2005-12-08

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