EP1740475A1 - Bag with lateral folds - Google Patents

Bag with lateral folds

Info

Publication number
EP1740475A1
EP1740475A1 EP05744809A EP05744809A EP1740475A1 EP 1740475 A1 EP1740475 A1 EP 1740475A1 EP 05744809 A EP05744809 A EP 05744809A EP 05744809 A EP05744809 A EP 05744809A EP 1740475 A1 EP1740475 A1 EP 1740475A1
Authority
EP
European Patent Office
Prior art keywords
bag
folded
welded
lateral folds
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.)
Granted
Application number
EP05744809A
Other languages
German (de)
French (fr)
Other versions
EP1740475B1 (en
Inventor
Claus Biller
Andreas Becker
Detlef Hassmann
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.)
Bischof and Klein SE and Co KG
Original Assignee
Bischof and Klein SE and Co KG
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 Bischof and Klein SE and Co KG filed Critical Bischof and Klein SE and Co KG
Publication of EP1740475A1 publication Critical patent/EP1740475A1/en
Application granted granted Critical
Publication of EP1740475B1 publication Critical patent/EP1740475B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B65D31/00—Bags or like containers made of paper and having structural provision for thickness of contents
    • B65D31/10—Bags or like containers made of paper and having structural provision for thickness of contents with gusseted sides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/18—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps
    • B65D33/20—End- or aperture-closing arrangements or devices using adhesive applied to integral parts, e.g. to flaps using pressure-sensitive adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor

Definitions

  • the invention relates to a gusseted bag made of flexible, multilayer film, the inner layer of which can be welded, in an embodiment in accordance with the preamble of claim 1.
  • the side gusset halves are connected on the outside along the upper edge edges in order to bring about a seal which is additionally improved by folding over the end regions and fixing the folded end regions on the adjacent side gusset half.
  • the invention addresses the problem of further improving the sealing of the gussets at their upper ends.
  • the invention solves this problem by a gusseted bag with the features of claim 1.
  • FIG. 1 is a broken view of the upper end portion of a bag according to the invention
  • FIG. 3 is a view similar to FIG. 1 of a modified bag design
  • Fig. 4 is a section along the line IV-IV in Fig. 3, and
  • FIG. 5 is a sectional view similar to FIG. 4 with the reclosure device open at the head end of the bag.
  • the gusseted bags shown in the drawing consist of a flexible, multilayer, at least two-layer film made of preferably thermoplastic material.
  • the inner layer of the film is weldable and consists, for example, of a polyolefin such as polyethylene or polypropylene.
  • a metal foil e.g. Aluminum foil and / or a polyester layer can be formed, which in turn is not weldable, but offers high strength and good printability.
  • the bags shown have a front wall 1 and a congruent rear wall 2 and side folds 3, 4 inserted between them, which extend from the bottom end (not shown) to the top end of the bag and end at a distance below the upper edge 5 of the bag walls 1, 2.
  • the bag walls 1, 2 are welded to one another along their marginal edges with the side folds 3, 4 and in the head region of the bag free of side folds, namely by means of longitudinal weld seams 6, 7 on the edge.
  • the bottom end is also covered by a Cross weld seam (not shown) closed, which can be done before or after filling the bag with filling material.
  • a closure device In the area of the head end of the bag, a closure device is usually provided, which can be formed by a weld seam, which is attached before or after filling the bag with filling material. It can also consist of a reclosing device which, in the embodiment according to FIGS. 1 and 2, is formed by snap fastener tapes in the manner of tongue and groove.
  • this reclosing device 8 consists of two closure straps 9, 10, which extend across the bag width, one of which is attached to the bag front wall 1 and the other to the bag rear wall 2 by welding or heat sealing.
  • the fastener tapes 9, 10 carry locking members 11, which can be converted into mutual engagement by pressure and release themselves from their mutual engagement with a corresponding train.
  • the upper end region 12 of both side gussets 3, 4 is folded over along an inward and obliquely downward folding edge 13, the folding being able to be directed toward the front bag wall 1 or towards the rear bag wall 2.
  • the folded end regions 12 of the side folds 3, 4 have the shape of a right-angled triangle and are connected to the half of the side folds 3, 4 facing them by welding, as is illustrated in FIGS. 2, 4 and 5 by the schematically represented weld seam 14 , Furthermore, the folded-over end regions 12 are welded on their outside to the adjacent bag wall, in the exemplary embodiments shown to the bag rear wall 2, as is illustrated by the weld seam 15, which is also shown schematically in FIGS. 2, 4 and 5.
  • a region 16 of the equilateral side gusset halves adjacent to the folded end regions 12 of the side folds 3, 4 is welded to the adjacent bag wall 2 so that the welded connection regions enclose the upper edge edges 17 of the folded end regions 12. This ensures that the upper ends of the side gussets 3, 4 are absolutely sealed, regardless of whether the superimposed outer surfaces of the side gussets 3, 4 along the upper edge 17 are additionally provided with a closure, for example an adhesive closure, or Not.
  • a reclosure device 18 is provided in the head region of the bag, which is designed as a three-layer sealing strip which extends over the entire width of the bag.
  • the two outer layers 19, 20 are each welded to the inside of the adjacent bag wall 1 or 2, as is symbolized by the welded connections 21, 22.
  • the middle layer 23 consists of a durable or adhesive material based on synthetic resin or plastic, which can be separated into two sub-layers by cohesive failure when a tensile force is exerted on the middle layer 23 by pulling the bag walls 1, 2 apart. After removal of material, the two separate sub-layers can be joined together again by pressing them together to form a closed middle layer 23. Otherwise, the embodiment according to FIGS. 3 to 5 corresponds to the bag embodiment according to FIGS. 1 and 2.

Landscapes

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

Abstract

The invention concerns a bag with lateral folds made from a multilayer flexible film whereof the inner layer is sealable, said bag comprising a closed bottom end and a top end provided with a closure system, and lateral folds (3, 4) arranged on both sides between the two side walls of the bag which form the front wall (1) and the rear wall (2) of the bag, said lateral folds extending from the bottom end to the top end, and terminating spaced apart from the top marginal edges (5) of the walls (1, 2) of the bag. According to the invention, the bag walls are bonded with the lateral folds and in the top part of the bag, not containing any lateral fold, one beneath the other along their marginal edges, and the top end parts (12) of the lateral folds, are folded towards the bag wall, relative to a folding line (13) which is inclined inwards and downwards towards the bottom end, the folded end parts are bonded at their inner side, with the inner side of the halves of neighbouring lateral folds, and closed at the marginal edges on the top side (17). The invention is characterized in that the folded end parts of the lateral folds, are surface-bonded at their outer side, with the neighbouring bag wall, one part of the halves of the lateral folds, which is adjacent the folded end parts of the lateral folds, is also surface-bonded to the neighbouring bag wall, and the bonding link (14, 15, 16) encompasses the marginal edges of the folded end parts of the lateral folds.

Description

Seitenfaltenbeutel Satchel bags
Die Erfindung betrifft einen Seitenfaltenbeutel aus flexibler, mehrschichtiger Folie, deren Innenschicht schweißbar ist, in einer Ausbildung gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a gusseted bag made of flexible, multilayer film, the inner layer of which can be welded, in an embodiment in accordance with the preamble of claim 1.
Bei einem bekannten Beutel dieser Art (DE 20017182 U1) sind die Seitenfaltenhälf- ten außenseitig entlang der oberen Randkanten verbunden, um eine Abdichtung herbeizuführen, die durch das Umfalten der Endbereiche und Festlegen der umgefalteten Endbereiche an der benachbarten Seitenfaltenhalfte zusätzlich verbessert wird.In a known bag of this type (DE 20017182 U1), the side gusset halves are connected on the outside along the upper edge edges in order to bring about a seal which is additionally improved by folding over the end regions and fixing the folded end regions on the adjacent side gusset half.
Die Erfindung befaßt sich mit dem Problem einer weiteren Verbesserung der Abdichtung der Seitenfalten an ihren oberen Enden. Die Erfindung löst dieses Problem durch einen Seitenfaltenbeutel mit den Merkmalen des Anspruchs 1. Hinsichtlich weiterer Ausgestaltungen wird auf die Ansprüche 2 bis 4 verwiesen.The invention addresses the problem of further improving the sealing of the gussets at their upper ends. The invention solves this problem by a gusseted bag with the features of claim 1. With regard to further refinements, reference is made to claims 2 to 4.
Die Einbettung der oberen Randkanten nach der Umfaltung der oberen Endbereiche der Seitenfalten in einen Schweißverbindungsbereich ist sichergestellt, daß auch dann eine vollständige und sichere Abdichtung der Seitenfalten an ihren oberen Enden eintritt, wenn kein besonderer Verschluß entlang der oberen Randkanten der Seitenfalten, sei es durch Schweißen oder durch Kleben, vorgesehen wird. Denn der Schweißverbindungsbereich bildet eine vollständige Abdichtung, die auch unabhängig von zusätzlichen Maßnahmen einen zuverlässigen Verschluß der Seitenfalten an ihren oberen Randkanten herbeiführt. Zugleich ist durch die Verbindung der Seiten- faltenbereiche mit der Beutelwand, vorzugsweise der rückseitigen Beutelwand, sichergestellt, daß die oberen Enden der Seitenfalten nicht mehr störend in den Füllraum vorspringen. Weitere Einzelheiten und Wirkungen ergeben sich aus der nachfolgenden Beschreibung und der Zeichnung, in der zwei Ausführungsbeispiele des Gegenstands der Erfindung schematisch näher veranschaulicht sind. In der Zeichnung zeigen:The embedding of the upper edge edges after the folding of the upper end regions of the side gussets into a welded joint region ensures that a complete and secure sealing of the side folds occurs at their upper ends even if there is no special closure along the upper edge edges of the side folds, be it by welding or by gluing. This is because the welded joint area forms a complete seal which, regardless of additional measures, reliably closes the side gussets at their upper edges. At the same time, the connection of the side fold areas to the bag wall, preferably the rear bag wall, ensures that the upper ends of the side folds no longer protrude into the filling space. Further details and effects result from the following description and the drawing, in which two exemplary embodiments of the object of the invention are schematically illustrated in more detail. The drawing shows:
Fig. 1 eine abgebrochene Ansicht des oberen Endbereiches eines erfindungsgemäßen Beutels,1 is a broken view of the upper end portion of a bag according to the invention,
Fig. 2 einen Schnitt etwa nach der Linie ll-ll in Fig. 1 ,2 shows a section approximately along the line II-II in Fig. 1,
Fig. 3 eine Ansicht ähnlich Fig. 1 einer abgewandelten Beutelausführung,3 is a view similar to FIG. 1 of a modified bag design,
Fig. 4 einen Schnitt nach der Linie IV-IV in Fig. 3, undFig. 4 is a section along the line IV-IV in Fig. 3, and
Fig. 5 eine Schnittdarstellung ähnlich Fig. 4 bei geöffneter Wiederverschlußeinrich- tung am Kopfende des Beutels.5 is a sectional view similar to FIG. 4 with the reclosure device open at the head end of the bag.
Die in der Zeichnung dargestellten Seitenfaltenbeutel bestehen aus einer flexiblen, mehrschichtigen, zumindest zweischichtigen Folien aus bevorzugt thermoplastischem Kunststoff. Die Innenschicht der Folie ist schweißbar und besteht beispielsweise aus einem Polyolefin wie Polyäthylen oder Polypropylen. Außenseitig können sich eine oder mehrere Schichten anschließen, die je nach den geforderten Eigenschaften von einer Metallfolie, z.B. Aluminiumfolie und/oder einer Polyesterschicht gebildet sein kann, die ihrerseits nicht schweißfähig ist, jedoch eine hohe Festigkeit und gute Bedruckbarkeit bietet.The gusseted bags shown in the drawing consist of a flexible, multilayer, at least two-layer film made of preferably thermoplastic material. The inner layer of the film is weldable and consists, for example, of a polyolefin such as polyethylene or polypropylene. On the outside, one or more layers can be attached, which, depending on the required properties, are made of a metal foil, e.g. Aluminum foil and / or a polyester layer can be formed, which in turn is not weldable, but offers high strength and good printability.
Die dargestellten Beutel haben eine Vorderwand 1 und eine deckungsgleiche Rückwand 2 sowie zwischen diese eingelegte Seitenfalten 3,4, die sich von dem nicht dargestellten Bodenende zum Kopfende des Beutels hin erstrecken und dabei im Abstand unterhalb der oberen Randkanten 5 der Beutelwände 1 ,2 enden. Die Beutelwände 1 ,2 sind mit den Seitenfalten 3,4 sowie im von Seitenfalten freien Kopfbereich des Beutels untereinander entlang ihrer Randkanten verschweißt, und zwar durch randseitige Längsschweißnähte 6,7. Auch das Bodenende wird durch eine (nicht dargestellte) Querschweißnaht verschlossen, was vor oder nach der Befüllung des Beutels mit Füllgut erfolgen kann.The bags shown have a front wall 1 and a congruent rear wall 2 and side folds 3, 4 inserted between them, which extend from the bottom end (not shown) to the top end of the bag and end at a distance below the upper edge 5 of the bag walls 1, 2. The bag walls 1, 2 are welded to one another along their marginal edges with the side folds 3, 4 and in the head region of the bag free of side folds, namely by means of longitudinal weld seams 6, 7 on the edge. The bottom end is also covered by a Cross weld seam (not shown) closed, which can be done before or after filling the bag with filling material.
Im Bereich des Kopfendes des Beutels ist üblicherweise eine Verschlußeinrichtung vorgesehen, die von einer Schweißnaht gebildet sein kann, die vor oder nach Befüllung des Beutels mit Füllgut angebracht wird. Sie kann auch aus einer Wiederver- schlußeinrichtung bestehen, die bei der Ausführung nach Fig. 1 und 2 von Druckverschlußbändern nach Art von Nut und Feder gebildet ist. Im einzelnen besteht diese Wiederverschlußeinrichtung 8 aus zwei sich über die Beutelbreite erstreckenden Verschlußbändern 9, 10, von denen das eine an der Beutelvorderwand 1 und das andere an der Beutelrückwand 2 durch Verschweißung bzw. Heißsiegeln befestigt ist. Die Verschlußbändern 9,10 tragen Verriegelungsglieder 11 , die durch Druck in gegenseitigem Eingriff überführbar sind und bei entsprechendem Zug sich aus ihrem gegenseitigen Eingriff lösen.In the area of the head end of the bag, a closure device is usually provided, which can be formed by a weld seam, which is attached before or after filling the bag with filling material. It can also consist of a reclosing device which, in the embodiment according to FIGS. 1 and 2, is formed by snap fastener tapes in the manner of tongue and groove. In particular, this reclosing device 8 consists of two closure straps 9, 10, which extend across the bag width, one of which is attached to the bag front wall 1 and the other to the bag rear wall 2 by welding or heat sealing. The fastener tapes 9, 10 carry locking members 11, which can be converted into mutual engagement by pressure and release themselves from their mutual engagement with a corresponding train.
Der obere Endbereich 12 beider Seitenfalten 3,4 ist entlang einer einwärts und schräg abwärts verlaufenden Faltkante 13 umgefaltet, wobei die Umfaltung zur vorderen Beutelwand 1 oder zur rückwärtigen Beutelwand 2 hin gerichtet sein kann. Die umgefalteten Endbereiche 12 der Seitenfalten 3,4 haben die Form eines rechtwinkligen Dreiecks und sind mit der ihnen jeweils zugewandten Hälfte der Seitenfalten 3,4 durch Verschweißen verbunden, wie dies in Fig. 2, 4 und 5 durch die schematisch wiedergegebene Schweißnaht 14 veranschaulicht ist. Ferner sind die umgefalteten Endbereiche 12 an ihrer Außenseite mit der benachbarten Beutelwand, bei dem dargestellten Ausführungsbeispielen mit der Beutelrückwand 2, verschweißt, wie das durch die ebenfalls schematisch wiedergegebene Schweißnaht 15 in Fig. 2, 4 und 5 veranschaulicht ist. Ferner ist auch ein an die umgefalteten Endbereiche 12 der Seitenfalten 3,4 angrenzender Bereich 16 der gleichseitigen Seitenfaltenhälften mit der benachbarten Beutelwand 2 flächig verschweißt, so daß die Schweißverbindungsbereiche die oberen Randkanten 17 der umgefalteten Endbereiche 12 einschließen. Hierdurch ist sichergestellt, daß die oberen Enden der Seitenfalten 3,4 absolut dicht verschlossen sind, und zwar unabhängig davon, ob die aufeinanderliegenden Außenflächen der Seitenfalten 3,4 entlang den oberen Randkanten 17 noch zusätzlich mit einem Verschluß, beispielsweise einem Klebverschluß, versehen sind oder nicht.The upper end region 12 of both side gussets 3, 4 is folded over along an inward and obliquely downward folding edge 13, the folding being able to be directed toward the front bag wall 1 or towards the rear bag wall 2. The folded end regions 12 of the side folds 3, 4 have the shape of a right-angled triangle and are connected to the half of the side folds 3, 4 facing them by welding, as is illustrated in FIGS. 2, 4 and 5 by the schematically represented weld seam 14 , Furthermore, the folded-over end regions 12 are welded on their outside to the adjacent bag wall, in the exemplary embodiments shown to the bag rear wall 2, as is illustrated by the weld seam 15, which is also shown schematically in FIGS. 2, 4 and 5. Furthermore, a region 16 of the equilateral side gusset halves adjacent to the folded end regions 12 of the side folds 3, 4 is welded to the adjacent bag wall 2 so that the welded connection regions enclose the upper edge edges 17 of the folded end regions 12. This ensures that the upper ends of the side gussets 3, 4 are absolutely sealed, regardless of whether the superimposed outer surfaces of the side gussets 3, 4 along the upper edge 17 are additionally provided with a closure, for example an adhesive closure, or Not.
Bei der in Fig. 3 bis 5 dargestellten Beutelausführung ist im Kopfbereich des Beutels eine Wiederverschlußeinrichtung 18 vorgesehen, die als dreischichtiger Verschlußstreifen ausgebildet ist, der sich über die gesamte Beutelbreite erstreckt. Die beiden Außenschichten 19,20 sind jeweils mit der Innenseite der benachbarten Beutelwand 1 bzw. 2 verschweißt, wie das durch die Schweißverbindungen 21 ,22 versinnbildlicht ist. Die Mittelschicht 23 besteht aus einem dauerhaftfähigen bzw. -klebfähigen Material auf Kunstharz- oder Kunststoffbasis, das durch Kohäsionsbruch in zwei Teilschichten trennbar ist, wenn auf die Mittelschicht 23 eine Zugkraft durch Auseinanderziehen der Beutelwände 1 ,2 ausgeübt wird. Nach Entnahme von Gut können die beiden getrennten Teilschichten durch Aufeinanderdrücken wieder zu einer geschlossenen Mittelschicht 23 zusammengefügt werden. Im übrigen entspricht die Ausführung nach den Fig. 3 bis 5 der Beutelausführung nach Fig. 1 und 2. 3 to 5, a reclosure device 18 is provided in the head region of the bag, which is designed as a three-layer sealing strip which extends over the entire width of the bag. The two outer layers 19, 20 are each welded to the inside of the adjacent bag wall 1 or 2, as is symbolized by the welded connections 21, 22. The middle layer 23 consists of a durable or adhesive material based on synthetic resin or plastic, which can be separated into two sub-layers by cohesive failure when a tensile force is exerted on the middle layer 23 by pulling the bag walls 1, 2 apart. After removal of material, the two separate sub-layers can be joined together again by pressing them together to form a closed middle layer 23. Otherwise, the embodiment according to FIGS. 3 to 5 corresponds to the bag embodiment according to FIGS. 1 and 2.

Claims

Ansprüche: Expectations:
1. Seitenfaltenbeutel aus flexibler, mehrschichtiger Folie, deren Innenschicht schweißbar ist, mit einem vor oder nach Befüllung des Beutels mit Füllgut geschlossenen Bodenende und einem Kopfende mit Verschlußeinrichtung, und mit zwischen den beiden die Beutelvorderwand (1) und die Beutelrückwand (2) bildenden Beutelwänden beidseits eingelegten Seitenfalten (3;4), die sich vom Bodenende zum Kopfende hin erstrecken und im Abstand unterhalb der oberen Randkanten (5) der Beutelwände (1 ;2) enden, wobei die Beutelwände (1 ;2) mit den Seitenfalten (3;4) und im seitenfaltenfreien Kopfbereich des Beutels untereinander entlang ihren Randkanten verschweißt sind, und wobei die oberen Endbereiche (12) der Seitenfalten (3;4) um eine zum Bodenende hin schräg einwärts abwärts verlaufende Faltlinie (13) zu einer Beutelwand (1 ;2) hin umgefaltet, die umgefalteten Endbereiche (12) an ihrer Innenseite mit der Innenseite der benachbarten Seitenfaltenhalfte verschweißt und an den kopfseitigen Randkanten (17) verschlossen sind, dadurch gekennzeichnet, daß die umgefalteten Endbereiche (12) der Seitenfalten an ihrer Außenseite mit der benachbarten Beutelwand flächig verschweißt sind, ein an die umgefalteten Endbereiche (12) der Seitenfalten (3;4) angrenzender Bereich (16) der Seiten- faltenhälften ebenfalls mit der benachbarten Beutelwand (1 ;2) flächig verschweißt ist, und die Schweißverbindung (14,15,16) die Randkanten (17) der umgefalteten Endbereiche (12) der Seitenfalten (3;4) einschließen.1.Side gusset bags made of flexible, multilayer film, the inner layer of which can be welded, with a bottom end closed before or after filling the bag with filling material and a head end with a closure device, and with bag walls forming the bag front wall (1) and the bag rear wall (2) between the two side folds (3; 4) inserted on both sides, which extend from the bottom end to the head end and end at a distance below the upper edge edges (5) of the bag walls (1; 2), the bag walls (1; 2) with the side folds (3; 4) and in the gusset-free head region of the bag are welded to one another along their edge edges, and the upper end regions (12) of the gussets (3; 4) around a fold line (13) which runs obliquely downwards towards the bottom end to form a bag wall (1; 2 ) folded over, the folded end regions (12) welded on the inside to the inside of the adjacent side gusset halves and on the head side Edge edges (17) are closed, characterized in that the folded end regions (12) of the side folds are welded flat on their outside to the adjacent bag wall, an area (16) adjoining the folded end regions (12) of the side folds (3; 4). the side gusset halves are also welded flat to the adjacent bag wall (1; 2), and the welded connection (14, 15, 16) encloses the edge edges (17) of the folded end regions (12) of the side gussets (3; 4).
2. Seitenfaltenbeutel nach Anspruch 1 , dadurch gekennzeichnet, daß die Endbereiche (12) der Seitenfalten (3;4) zur Beutelrückwand (2) hin umgefaltet sind.2. gusseted bag according to claim 1, characterized in that the end regions (12) of the gussets (3; 4) to the bag rear wall (2) are folded over.
3. Seitenfaltenbeutel nach Anspruch 1 , dadurch gekennzeichnet, daß am Kopfende des Beutels eine Wiederverschlußeinrichtung (8;18) vorgesehen ist, die sich im Abstand oberhalb der umgefalteten Endbereiche (12) Seitenfalten (3;4) über die Beutelbreite erstreckt.3. gusseted bag according to claim 1, characterized in that a reclosure device (8; 18) is provided at the head end of the bag, which gussets (3; 4) over the at a distance above the folded end regions (12) Bag width extends.
4. Seitenfaltenbeutel nach Anspruch 3, dadurch gekennzeichnet, daß als Wiederverschlußeinrichtung (18) ein dreischichtiger Verschlußstreifen vorgesehen ist, dessen Außenschichten mit der Innenseite der benachbarten Beutelwände verschweißt sind und dessen Mittelschicht durch Kohäsionsbruch in zwei Teilschichten trennbar ist, die bei Aufeinanderlegen wieder in Haftverbindung übergehen. 4. gusseted bag according to claim 3, characterized in that a three-layer closure strip is provided as the reclosing device (18), the outer layers of which are welded to the inside of the adjacent bag walls and the middle layer of which can be separated into two sub-layers by cohesive fracture, which again become adhesive when placed one on the other ,
EP05744809A 2004-04-29 2005-04-29 Bag with lateral folds Not-in-force EP1740475B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004006857U DE202004006857U1 (en) 2004-04-29 2004-04-29 Satchel bags
PCT/EP2005/004605 WO2005105592A1 (en) 2004-04-29 2005-04-29 Bag with lateral folds

Publications (2)

Publication Number Publication Date
EP1740475A1 true EP1740475A1 (en) 2007-01-10
EP1740475B1 EP1740475B1 (en) 2007-08-08

Family

ID=34968367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05744809A Not-in-force EP1740475B1 (en) 2004-04-29 2005-04-29 Bag with lateral folds

Country Status (8)

Country Link
US (1) US20080240629A1 (en)
EP (1) EP1740475B1 (en)
JP (1) JP2007534569A (en)
AU (1) AU2005237753B2 (en)
CA (1) CA2563328C (en)
DE (2) DE202004006857U1 (en)
ES (1) ES2292137T3 (en)
WO (1) WO2005105592A1 (en)

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DE202004006857U1 (en) 2005-09-08
CA2563328C (en) 2011-11-15
ES2292137T3 (en) 2008-03-01
EP1740475B1 (en) 2007-08-08
DE502005001192D1 (en) 2007-09-20
CA2563328A1 (en) 2005-11-10
AU2005237753B2 (en) 2010-06-03
US20080240629A1 (en) 2008-10-02
WO2005105592A1 (en) 2005-11-10
AU2005237753A1 (en) 2005-11-10
JP2007534569A (en) 2007-11-29

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