EP0553413A1 - Recloseable bag - Google Patents

Abstract

To accommodate packaged goods in a manner which is dustproof and secure against theft, the packaging bag (10) having a rectangular, square or other geometric shape is formed by a front wall (11) and a rear wall connected to the front wall (11) in three side regions. In the fourth side region (16) there is provided a filling opening which can be firmly closed after the packaging bag (10) has been filled, and incorporated in the front wall (11) or rear wall of the packaging bag (10) is a break or tear tab (20). Arranged in a partial region of the removal opening covered by the break or tear tab (20) is a tab-holding blank (30) which covers the said opening in one section and under which engages on the inside of the package the break or tear tab (20) torn out from the front wall (11) or rear wall, with the result that after the packaging bag has been opened it is possible to reclose it. <IMAGE>

Description

DE-GM 82 12 844.8 describes a resealable one-piece film bag with a flap and a recess in the part of the bag front wall covered by the flap. This reclosable bag of rectangular format with the flap covering the bag opening consists of a single piece of film which forms its side walls and the bag overlap, the piece of film consisting of an at least two-layer laminate, the first layer of which is a biaxially stretch-oriented film made of thermoplastic material and the second layer of which consists of synthetic thermoplastic copolymer or a statistical mixture of thermoplastic polymers, the free surface of the first layer forming one outside and the free surface of the second layer forming the second outside of the laminate, and wherein the inside of the film laminate blank in the case of the bag walls is in each case second and the outer sides of which each consist of the first layer thereof and the inner side of the integral bag overlap which is adjacent to the outer sides of the bag front wall and is made of a second laminate layer of the film nstückes exists and with two opposite side edges of the bag walls are firmly sealed together and the sealing connection of the bag overlap edges with the outside of the front wall of the bag and the bag overlap by a parallel to its folded edge and close to this extending, openable sealing seam is connected to the outside of the front wall of the bag and the bag has a pressure-sensitive adhesive seam which runs parallel and at a close distance to the free edge of the flap and extends from an edge sealing seam of the flap to the other, which overlaps the bag with the outside of the front wall of the bag connects, which in the area of its part covered by the bag overlap has a recess delimited by at least a part of the free edge of the bag front wall. This is a bag made of a single, at least two-layer film laminate piece with a flap, which is connected to the outside of the bag by means of a seal that can be pulled open, and in which the flap, after opening the seal that connects it to the bag wall, can be re-closed if necessary Bag can be reconnected to the wall thereof, the bond being able to be repeatedly released and then restored, the part of its front wall covered by the flap having a recess which, when the bag is open, makes it easy to remove the contents of the bag. In the case of this bag, the two bag walls merge integrally into one another in the region of a fold edge, the fold edge lying opposite the bag opening. The bag overlap is integrally connected to the upper boundary edge of the one bag wall opposite the fold edge on the bag bottom. When the bag is closed, the rectangular bag overlap covers the mouth opening of its cavity. In each case in the area of its side edges, the inside of the bag overlap is connected to a non-sealable, but sealable outside of the bag front wall by sealing, which is jerk-free is windable. The bag overlap closing the bag opening is not integrated in terms of area in the bag front wall, but is placed on and glued to the outside of the bag front wall.

DE-OS 23 34 841 describes a bottom gusset bag made of a composite film, which is composed of at least two layers that differ from one another in terms of material, of which the inner layer consists of a weldable thermoplastic, with two bag walls and a bottom gusset, which together have a W-shaped cross section with four foil layers in the bottom fold area and which are connected to each other along their side edges by weld seams. The pouch walls in the area of the bottom gusset and the two layers of the bottom gusset near their side edges have overlapping cut-outs, into which a part of the plastic is displaced by the thermoplastic inner layers from the surrounding areas of the four foil layers under the influence of pressure and heat and this Parts in the punched holes are fused together in a weld. With this configuration, a standing bottom gusset bag is created, in which the lateral ends of the bottom gusset are firmly closed and which can be easily produced. A filling and removal opening formed in the front wall or the rear wall of this bottom gusset bag, which can be closed by means of an overlapping flap and which allows opening and reclosing, is not provided in this bottom gusset bag design.

According to EP 0 054 297, a tubular bag pack made of flat film made of plastic or the like. welded and / or Adhesive material, with a tube-forming longitudinal seam in one of the two opposing pouch walls, a bottom and, after filling, a filling space limited on the head side by a cross weld seam as well as a fill-free upper edge area, which is on the underside of the top seam of the filling space and on the top side of an upper final cross weld seam Pack is limited, and has a handle hole extending through the opposing bag walls, formed by punching or cutting in the longitudinal median plane of the pack, which has a reinforcing strip of plastic film that can be welded and / or glued together with a reinforcing strip that surrounds its contour and has the same contour hole is provided, wherein the reinforcing strip has a length which is equal to the length of the pack, and is welded in the upper end seam of the pack and in the top seam and in the bottom seam of the filling space annt. In this tubular bag pack, the longitudinally seam-free bag wall is provided with the reinforcement strip, which is formed by a separate reinforcement band, which runs in the area between the upper end seam of the pack and the top seam and the bottom seam of the filling space without connection to the longitudinally seam-free bag wall. A tubular bag pack designed in this way is intended to provide a high degree of load-bearing capacity of the bag pack in the grip hole area with low material consumption for the reinforcement strip associated with the longitudinally seam-free bag wall in conjunction with the tube-forming longitudinal seam contained in the other bag wall, which in turn exerts a stiffening effect on the bag pack in this bag wall , exhibit. A multiple reclosing of a removal opening by means of a closure flap is not provided here.

DE-GM 89 08 343.1 shows packaging for goods, in particular for shop-in-shop shops. The goods package consists of a bag-like container with a filling opening that can be closed after the goods have been inserted and cannot be opened without destroying the packaging. For this purpose, the bag-like container has a closure flap which can be folded over the filling opening and has an adhesive track covered by a removable protective layer, and an attachment with a carrying handle on one of its other closed sides. This product packaging is designed like a carrier bag, but in contrast to the other carrier bags is provided with a closable filling opening. The handling of this product packaging is such that the bag-like container kept in stock at the sales stand is removed from the supply, the goods are inserted into the bag-like container through the filling opening, then the protective layer, for example a cover strip, is removed from the closure flap, the closure flap is folded over and in the area the adhesive track is pressed onto the container. Since a pressure sensitive adhesive with such a strong affinity is used for attaching the closure flap itself to the container that the tear resistance in the bonded area is greater than the tear resistance of the material from which the container is formed, the bag-like container cannot be inserted after the goods have been inserted opened more without destroying the container. In this product packaging, too, there is a closure flap which can be closed for the filling and removal opening not provided, which enables the removal opening to be closed again after the container has been opened.

The invention has for its object to provide a dust-proof and theft-proof, tubular packaging bag with a tamper-evident closure, which allows the removal opening covered by the tamper-evident closure to be reclosed, which can be shaped and filled by hand or by machine.

This object is achieved in such a reclosable packaging bag by the features characterized in claim 1.

A packaging bag designed in this way according to the invention enables dust-protected and theft-proof accommodation in the interior of the packaging bag. Since the tamper-evident seal is designed in the form of a tear-open or tear-open flap in the front or rear wall of the packaging bag, this tamper-evident seal is retained even when the packaging bag has been filled. The packaging bag is filled via a separate filling opening in one of the Side walls of the packaging bag after its formation is formed by folding a corresponding folding blank and which is closed after the packaging bag has been filled. The tamper-evident or tear-open tab forming the tamper-evident seal is integrated into the wall surface of the packaging bag, so that the surface of the tamper-evident or tear-open tab merges smoothly into the front or rear wall surface of the packaging bag. Getting stuck and thus accidental tearing open the tear-open or tear tab during the transport of packaging bags is avoided due to this configuration. The resealability of the packaging bag is achieved with simple technical means, namely in the form of a tab-holding cut arranged in the area of the removal opening for the goods to be packaged, which overlaps a section of the removal opening, so that after the tamper-evident closure has been released, the break-open or tear-open tab is pushed under the tab-holding blank can be, so that the break-open or tear-open tab engages under the tab holding blank and closes the removal opening. In this way, opening and closing is possible in a large number of operations without the packaging bag being damaged or destroyed, even if it consists of thin paper. This tab holding blank provided in the area of the removal opening of the packaging bag can, according to one embodiment of the invention, be used as a separate part and connected on the inside wall side to the wall of the packaging bag provided with the tearing or tear-open tab, whereby, according to a further embodiment, this tab holding blank can be an integral part of the folding blank from which the packaging bag is folded for filling.

If the tab holding blank for the tear-open or tear-open tab is an integral part of the folding blank of the packaging bag, then the tab-holding blank under which the tear-open or tear-open tab is gripped is folded as a tab on the front or rear wall of the packaging bag, which is free of tear-open or tear tabs attached to the inner wall surface of the wall of the packaging bag receiving the tearing or tear-open tab by means of an adhesive connection.

The packaging bag can also be made of very thin material, e.g. Paper. Its production is economical, especially since it can be filled by hand and also by machine. The folding blanks provided for the production of the packaging bag are designed in such a way that they can also be mechanically shaped and folded into the packaging bag, with the possibility of using folding blanks in which the prerequisites for a tearing-open or tear-open tab are merely provided by providing an appropriate separating perforation be created. This makes it possible to combine a plurality of folding blanks designed in this way in a band, to keep them in the form of rolls and to carry out corresponding shaping and folding for the production of the corresponding packaging bags.

Advantageous embodiments of the invention are characterized in the subclaims.

• Fig. 1 einen Verpackungsbeutel mit einer abtrennbaren Aufhängevorrichtung in einer Vorderansicht,
• Fig. 2 den Verpackungsbeutel gemäß Fig.1 in einer Rückansicht,
• Fig. 3 einen flach liegenden Faltzuschnitt für einen Verpackungsbeutel in einer Vorderansicht,
• Fig. 4 einen flach liegenden Faltzuschnitt für einen Verpackungsbeutel mit einer abtrennbaren Aufhängevorrichtung in einer Vorderansicht,
• Fig. 5 den Faltzuschnitt gemäß Fig.4 in einer Ansicht auf die Innenwandflächen der die Vorder- und Rückwand bildenden Wandzuschnitte vor dem Einlegen eines Laschenhaltezuschnittes,
• Fig. 6 den Faltzuschnitt gemäß Fig.4 mit eingesetztem und befestigtem Laschenhaltezuschnitt und mit umgelegter oberer und unterer Lasche in einer Ansicht auf die Innenwandflächen der die Vorder- und Rückwand bildenden Wandzuschnitte,
• Fig. 7 den gemäß Fig.6 vorbereiteten Faltzuschnitt mit aufgebrachter Klebstoffbeschichtung in einer Ansicht auf die Innenwandflächen der die Vorder- und Rückwand bildenden Wandzuschnitte,
• Fig. 8 eine Draufsicht auf den aus dem Faltzuschnitt gemäß Fig.7 gefalteten Verpackungsbeutel vor dem Befüllen und vor dem Verschließen der Befüllungsöffnung,
• Fig. 9 einen flach liegenden Faltzuschnitt mit angefaltetem Laschenhaltezuschnitt in einer Vorderansicht,
• Fig.10 den Faltzuschnitt gemäß Fig.9 in einer Ansicht auf die Innenwandflächen der die Vorder- und Rückwand bildenden Wandzuschnitte,
• Fig.11 in einer Ansicht einen Abschnitt eines bandförmigen Zuschnittes mit einer Anzahl von mit Aufbrech- bzw. Aufreißlaschen versehenen einzelnen Faltzuschnitten,
• Fig.12 in einer schaubildlichen Ansicht einen zu einem Verpackungsbeutel gefalteten Faltzuschnitt mit einer Aufbrech- bzw. Aufreißlasche und mit einem im Bereich der von der Aufbrech- bzw. Aufreißlasche abgedeckten Entnahmeöffnung liegenden Faltzuschnittabschnitt als Laschenhaltezuschnitt,
• Fig.13 in einer schaubildlichen Ansicht den vorbereiteten Verpackungsbeutel gemäß Fig.12 mit einer Längsrandverschweißung,
• Fig.14 in einer Draufsicht einen mehrere einzelne Faltzuschnitte aufweisenden band- oder streifenförmigen Zuschnitt mit angefalteter Aufbrech- bzw. Aufreißlasche, wobei dieser Bandzuschnitt mit den einzelnen Faltzuschnitten aus dem Bandzuschnitt gemäß Fig.11 vorgefaltet ist,
• Fig.15 in einer Draufsicht einen fertig gefalteten Verpackungsbeutel vor dem Aufsetzen und Befestigen einer laschenförmig ausgebildeten Aufhängevorrichtung,
• Fig.16 in einer Draufsicht den mit einer Aufhängevorrichtung versehenen Verpackungsbeutel,
• Fig.17 in einer schaubildlichen Ansicht den aus einem Faltzuschnitt gefalteten Verpackungsbeutel vor der Produkteinführung,
• Fig.18 in einer schaubildlichen Ansicht den vorbereiteten Verpackungsbeutel gemäß Fig.17 mit Randversiegelung,
• Fig.19 einen bandförmigen Zuschnitt mit mehreren aneinandergereihten,vorbereiteten einzelnen Faltzuschnitten mit einer Aufbrech- bzw. Aufreißlasche und mit Seitenversiegelung und einer oberen Querversiegelung zur Ausbildung einer Aufhängevorrichtung,
• Fig.20 in einer schaubildlichen Ansicht einen von einer Rolle abgezogenen Abschnitt eines Bandzuschnittes mit einer Anzahl von nebeneinander in Reihe liegenden, zur Ausbildung von Aufbrech- bzw. Aufreißlaschen angeordneten Trennperforationen,
• Fig.21 in einer schaubildlichen Ansicht einen einzelnen, vom Bandzuschnitt gemäß Fig.20 abgetrennten und zu einem Verpackungsbeutel gefalteten Faltzuschnitt mit oben liegender Aufbrech- bzw. Aufreißlasche und
• Fig.22 in einer schaubildlichen Ansicht einen aus einem Faltzuschnitt gefalteten Verpackungsbeutel mit geöffnetem Boden vor der Befüllung.

Embodiments of the invention are explained below with reference to the drawings. Show it

• 1 shows a packaging bag with a detachable hanging device in a front view,
• 2 the packaging bag according to FIG. 1 in a rear view,
• 3 shows a flat lying blank for a packaging bag in a front view,
• 4 is a flat view of a folded folding blank for a packaging bag with a detachable hanging device,
• 5 shows the folding blank according to FIG. 4 in a view of the inner wall surfaces of the wall blanks forming the front and rear wall before the insertion of a tab holding blank,
• 6 shows the folding blank according to FIG. 4 with the tab holding blank inserted and fastened and with the upper and lower tab folded over in a view of the inner wall surfaces of the wall blanks forming the front and rear walls,
• 7 shows the folded blank prepared according to FIG. 6 with an applied adhesive coating in a view of the inner wall surfaces of the wall blanks forming the front and rear walls,
• 8 shows a plan view of the packaging bag folded from the folding blank according to FIG. 7 before filling and before closing the filling opening,
• 9 is a flat view of a folded blank with the flap holding blank folded in a front view,
• 10 shows the folding blank according to FIG. 9 in a view of the inner wall surfaces of the wall blanks forming the front and rear walls,
• 11 is a view of a section of a band-shaped blank with a number of individual folding blanks provided with tear-open or tear-open tabs,
• 12 shows a diagrammatic view of a folded blank folded into a packaging bag with a tear-open or tear-open tab and with a fold-cut portion lying in the region of the removal opening covered by the tear-open or tear-open tab as a tab-holding blank,
• 13 shows a diagrammatic view of the prepared packaging bag according to FIG. 12 with a longitudinal edge seal,
• 14 shows a top view of a band-shaped or strip-shaped blank having a plurality of individual folding blanks with a folded-open or tear-open tab, this band blank being pre-folded with the individual folding blanks from the band blank according to FIG. 11,
• 15 shows a plan view of a fully folded packaging bag before the attachment and attachment of a tab-shaped suspension device,
• 16 shows a top view of the packaging bag provided with a hanging device,
• 17 shows a diagrammatic view of the packaging bag folded from a folded blank before the product is introduced,
• 18 shows a perspective view of the prepared packaging bag according to FIG. 17 with edge sealing,
• 19 shows a band-shaped blank with a plurality of lined-up, prepared individual folding blanks with a tear-open or tear-open tab and with side sealing and an upper transverse sealing to form a hanging device,
• 20 shows, in a diagrammatic view, a section of a strip blank that has been pulled off a roll and has a number of separating perforations which are arranged in a row next to one another and are arranged to form tearing or tear-open tabs
• Fig. 21 is a diagrammatic view of a single folding blank, separated from the band blank according to FIG. 20 and folded into a packaging bag, with a break-open or tear-open tab and
• Fig. 22 in a diagrammatic view of a folded packaging bag from a folding blank with the bottom open before filling.

1 and 2 is in the form of a bag with a front wall 11 and a rear wall 12, the rear wall 12 or the like in three side areas 13, 14, 15 with the front wall 11 by means of an adhesive connection or via heat sealing . is connected, while in the fourth side area 16 a filling device 17, which can be firmly closed by means of a sealing tab 18, is provided after the packaging bag 10 has been filled.

In the front wall 11 or in the rear wall 12 of the packaging bag 10, a tear-open or tear-open tab 20 is incorporated, which is connected to the wall surface of the front wall 11 or the rear wall 12 via a separating perforation 22 and is thus an integral part of the corresponding wall.

This break-open or tear-open tab 20 covers a removal opening 25 formed in the front wall 11 or the rear wall 12. In order to be able to close the removal opening 25 thus created for the contents of the packaging bag after the tear-open or tear-open tab 20 has been torn open, a tab holding blank 30 is provided which is arranged in the region of the removal opening 25 such that this removal opening 25 is covered in sections by the tab holding blank 30 is, so that when the tear-open or tear-open tab 20 is removed to close the removal opening 25, the tear-open or tear-open tab is inserted in such a way that the tab-holding blank 30 is undercut (FIG. 2). The tab-holding blank 30, which is gripped by the tear-open or tear-open tab 20, is fastened to the inner wall surface 11a of the front wall 11 or rear wall 12 of the packaging bag 10 receiving the tear-open or tear-open tab 20 by means of an adhesive connection.

The tab-holding blank 30, which is gripped by the opening or tear-open tab 20 and arranged in the region of the removal opening 25, is rectangular in the embodiment shown in FIGS. 5 and 6, but this tab-holding blank 30 can also have a different geometric shape. It is essential that this Tab-holding blank 30 is arranged in the area of the removal opening 25 or in the area of the break-open or tear-open tab 20 closing the removal opening 25 such that the tab-holding blank 30 extends into the removal opening 25 with one section. The section that covers the removal opening 25 from the tab-holding blank 30 is indicated at 21 (FIG. 6).

In a further embodiment according to FIGS. 9 and 10, instead of a separate tab holding blank 30, a tab 30 'is used, which is folded onto the front wall 11 or rear wall 12 of the packaging bag 10, which is free of tearing or tearing tabs, and on the inner wall surface of the tearing or tearing tab 20 receiving wall 11 or 12 of the packaging bag 10 is fastened by means of an adhesive connection. In this embodiment, the tab 30 'forming the tab holding blank 30' is an integral part of the packaging bag 10 or the folding blank from which the packaging bag 10 is formed and formed, and has the function of the tab holding blank 30. Also in this embodiment, the packaging bag can be with or without Be provided suspension device.

In all of the embodiments of the invention, the tear-open or tear-open tab 20 is connected via a separating perforation 22 to that wall of the packaging bag 10 in which the removal opening 25 is provided. Around a wall surface for printing, advertising, etc. Having it available, it will be advantageous to arrange the removal opening 25 with the tear-open or tear-open tab 20 in the rear wall 12 of the packaging bag 10, but there is also an education in the front wall 11 possible. In the exemplary embodiment according to FIGS. 1 to 10, the removal opening 25 is provided in the rear wall 12 of the packaging bag 10 with the tear-open or tear-open tab 20 covering it.

The tear-open or tear-open tab 20 preferably consists of a trapezoidal blank 20a with conical side edges 20b, 20c and a side edge 20d connecting these side edges 20b, 20c (FIGS. 2 to 10), but also all others, in the drawings Embodiments shown have correspondingly designed break-open or tear-open tabs 20. The break-open or tear-open tab 20 can also have a different shape; they and the removal opening 25 have the same shape.

This tear-open or tear-open tab 20 is connected by means of three side edges 20b, 20c, 20d via the separating perforation 22 to the surface of the wall 11 or 12 of the packaging bag 10 having the tear-open or tear-open tab 20, the tear-open or tear-open tab 20 forming blank 20a with a fourth side edge 20e adjacent to the upper edge 13a of the packaging bag 10 is folded on the wall 11 or 12 thereof.

The tab-holding blank 30 as well as all other parts of the packaging bag 10 are preferably made of paper, so that the empty packaging bags can be disposed of effortlessly. However, there is also the possibility of forming the tab holding blank 30 from film or another suitable material.

The packaging bag 10 with its front wall 11 and its rear wall 12 consists of two wall blanks 111, 112 combined into a folding blank 50, of which the wall blank 111 forms the front wall 11 and the wall blank 112 forms the rear wall 12. The removal opening 25, which is covered and closed by means of the tear-open or tear-open tab 20, is formed in the wall blank 112. The two wall cuts 111, 112 are connected to one another via a fold line 113 and are congruent, so that when the wall cut 112 is folded around the fold line 113 in the direction of the arrow X, this wall cut 112 then lies on the wall cut 111 (FIG. 7).

Each wall cut 111, 112 forming the packaging bag 10 is rectangular; however, the wall cuts 111, 112 can also be e.g. have a square shape.

If the two wall cuts 111, 112 are folded open and connected in the upper and lower area by means of an adhesive, then an opening 17 remains in the side area 14, which is used to fill the packaging bag 10. This filling opening 17 can be closed by means of a closure flap 18, which is folded onto the wall cut 111 of the packaging bag 10, which is opposite the wall cut 112 having the tear-open or tear-open flap 20, the closure flap 18 via a fold line 18 'with the wall cut 111 and in the folded state of the wall blanks 111, 112 is connected via an adhesive connection 19 to the outer wall surface of the wall blank 112 (FIG. 8).

The packaging bag 10 has an upper tab-shaped section 40 with a suspension device 41 which is designed as a slotted perforation 42 or round perforation (FIGS. 1 and 2). According to one embodiment, this tab-shaped section 40 is firmly connected to the two wall cuts or only to one of the two wall cuts 111, 112 of the packaging bag 10. According to a further embodiment, the tab-shaped section 40 is connected to the suspension device 41 via a separating perforation 43 with the two wall cuts 111, 112 of the packaging bag 10, the tab-shaped section 40 also being connected by means of point gluing 45 to the folding blank forming the packaging bag 10 (FIG. 15 ). As shown in FIGS. 3 and 4, the tab-shaped section 40 with the hanging device 41 consists of two congruent partial cuts 40a, 40b which can be connected to one another by means of an adhesive or welded connection and which are connected to the wall cuts 111, 112 via the separating perforation 43. In order to be able to close the top and bottom of the two wall cuts 111, 112 after the two have been folded onto one another, the wall cut 111 has a flap 18a, 18b in the upper area and in the lower area, which overlap lines 18a ', 18b' with the actual one Wall cut 111 are connected (Fig.4). However, if the two wall cuts 111, 112 are provided with the sections 40a, 40b forming the suspension device 41, then a further tab 40c is folded over the fold section 113b on the section 40b of the tab-shaped section 40, so that after the two wall cuts 111, 112 have been folded together, the tabs the two sections 40a, 40b lie one on top of the other and, after folding over the fold line 113b of the flap 40c, this is then fastened to the outer wall surface of the wall blank 112 becomes. The sections 40a, 40b and also the tab 40c are designed with the same contours as far as the slot perforation 42 is concerned, so that in the final state of the packaging bag the slot perforations of the sections 40a, 40b and the tab 40c lie congruently one above the other. The fold line 113 between the two wall sections 111, 112 is extended into the region of the two sections 40a, 40b as a fold line 113a, so that when the two wall sections 111, 112 are laid one on top of the other, the sections 40a, 40b also follow this folding process (FIG. 4).

According to one embodiment according to FIGS. 4 to 8, the packaging bag 10 consists of a folding blank 50, which consists of two rectangular wall blanks 111, 112 which are congruent in the folded-up state and form the front wall 11 and the rear wall 12 of the packaging bag 10 and which extend over the folding line running in the longitudinal direction of the blank 113 are interconnected. The wall panel 112 forming the rear wall 12 is provided with the tear-open or tear-open tab 20, which is connected to the wall blank 112 via the separating perforation 22 and which has the shape of a trapezoid, with other geometric shapes for the tear-open or tear-open tab 20 possible are. This break-open or tear-open tab 20 closes the removal opening 25 formed and provided in the wall blank 112.

The separating perforation 22 is U-shaped, with the formation of a holding web 23 formed in the wall cut surface. The wall cut 111, which is free of tearing or tear-open tabs, has fold lines 18 ', 18a' in the region of its three free side edges 51, 52, 53, 18b 'with the wall blank 111 connected tabs 18, 18a, 18b, which are provided with a self-adhesive coating or another suitable adhesive. The wall blank 112 carrying the tear-open or tear-open tab 20 is provided on the inside wall with an adhesive application 55 for the removal opening 25 covered by the tear-open or tear-open tab 20, which tab covers this section-wise section, which after folding the two wall blanks 111, 112 together to form the packaging bag 10 is held on the inside on the inner wall surface 12a of the wall blank 112 having the ripping or tearing tab 20.

The packaging bag 10 is produced from the folding blank 50 with or without an upper tab-shaped portion with a hanging device 41 according to FIGS. 3 and 4 in the same way as is shown below on a folding blank 50 with a hanging device. The starting point is the folded blank 50 (FIG. 4), on the inner wall surface 12a of the wall blank 112 of which the tab-holding blank 30 is glued, as shown in FIG. The adhesive application provided for fastening the tab holding blank 30 is indicated at 26 in FIG. 5. Starting from the position of the folded blank according to FIG. 5, the tab 40c is folded over and glued; the tab 18a is also folded over. Adhesive coatings 26a, 26b, 26c, as shown in FIG. 7, are then applied thereon, the adhesive coating 26a being applied to the outside of the flap 18a which has been folded over and the adhesive coating 26c being applied in the upper region to the flap 40c which has been folded in. The further adhesive coating 26b extends themselves below the tab 40c and above the end portion of the tear-open or tear-open tab 20 folded on the wall blank 112, so that this adhesive coating 26b extends in strips over both wall blanks 111, 112. Subsequently, the wall blank 112 is then folded onto the wall blank 111 and by means of the adhesive coatings 26a, 26b, 26c, the two wall blanks 111, 112 are firmly connected to one another (FIG. 8), so that ultimately only the filling opening 17 is unlocked. After the packaging bag 10 thus prepared has been filled, the closure flap 18, which is provided with an adhesive coating 19, is then folded onto the outer wall surface of the wall blank 112 in the direction of the arrow X1 and glued to the wall blank 112.

If, on the other hand, the lower flap 18a is elongated on the wall blank 111 as a flap 30 ', the flap holding blank 30 is replaced in the folded state by the folded flap 30', which is dimensioned so long that this flap 30 'with its free end 30a' comes to rest in the area of the removal opening 25 or the break-open or tear-open tab 20 so that a section of this removal opening 25 is covered in order to open the packaging bag 10 again by removing the break-open or tear-open tab 20 from its wall blank 112 to be able to be inserted under the tab 30 'so that the removal opening 25 is closed (FIGS. 9 and 10).

According to a further embodiment according to FIGS. 11 to 13, the packaging bag 10 consists of a rectangular folding blank 150 with two long sides 151, 152 and two Narrow sides 153,154. The folding blank 150 has an approximately U-shaped separating perforation 22 adjacent to its upper narrow side 153 to form a tear-open or tear-open tab 20. This U-shaped separating perforation 22 is formed by two first separating perforation sections 160, 161 running parallel or conically drawn in to the cut longitudinal sides 151, 152, to which second separating perforation sections 160a, 161a, which converge conically to one another, connect into a grip section or grip edge running parallel to the cut narrow side 153 165 pass over at the end of the tear-open tab. The grip section or grip edge 165 is formed by triangular notches or recesses 166, 166a in the peripheral edge 153 of the folding blank 150 (FIG. 11). There is the possibility of producing the folding blanks 150 required for the production of packaging bags 10 individually, but a plurality of such individual folding blanks 150 can also be combined in a row to form a band-shaped blank 60, which is formed on its edge A, for example by machine, to form a bag-shaped packaging bag. This configuration enables the mechanical production of packaging bags 10. According to FIG. 11, the individual tearing or tear-open tabs 20 are formed in the upper edge region 60a of the band-shaped blank 60. Individual packaging bags 10, which are formed by folding (FIG. 12), are then produced from such a band-shaped blank 60 by deforming the individual folding blanks. The folding is such that the first section 170 of the folding blank 150, which carries the tear-open or tear-open tab 20, is folded in the region of the ends of the first separating perforation sections 160, 161 by 180 ^o at 150 a and is unfolded onto the remaining section 171 of the folding blank 150. A second section 173 of the break-up or tear-open flap 20 opposite the third blank portion 172 is ^o folded at 150b by 180, so that this second portion 173 with a portion extends under the first section 170, the free end 173a of the second portion 173 of the first Section 170 engages in such a way that the opening or tearing flap 20 with its removal opening 25 is gripped in sections. The first section 170 of the folded folding blank 150 that carries the tear-open or tear-open tab 20 is glued to the second section 173 (FIG. 12). After the product launch, welding or gluing takes place on the edge, which is indicated in FIG. 13 at 150c, 150d. The end of the second section 173 which engages in sections under the tear-open or tear-open tab 20 or the removal opening 25 is used for inserting and holding the break-open or tear-open tab 20 when the removal opening 25 is to be closed again; at the same time this end section of the second section 173 replaces the tab holding blank 30; an additional arrangement and attachment of a tab-holding blank 30 is thus dispensed with.

According to a further embodiment according to FIGS. 14 to 18, the tearing-open or tear-open tab 20 with the handle portion or handle edge 165 formed thereon is already pre-folded and also arrives in the form of a tape blank 60 with lined up individual and coherent folded blanks 150 for the individual production of packaging bags 10 In this embodiment, it is corresponding to pre-folded packaging bags 12, which are closed and isolated by attaching edge welds or edge seals 150c, 150d and attaching interfaces. The packaging bags 10 thus produced and filled can be used with or without a hanging device. According to FIG. 15, the suspension device is formed by a tab-shaped blank 40 'in which a slot perforation 42 is formed. The blank 40 'is fastened by means of point gluing 45 to the already folded folding blank 150, so that a packaging bag 10 with a hanging device is then obtained (FIG. 16).

17 shows a folded blank 150 pre-folded to form the packaging bag 10. After the product has been fed in, an edge seal is carried out at 150c, 150d and in the head region at 150e (FIG. 18). By attaching the tab with the hanging device 41 by means of point gluing, it is possible to detach the hanging device if necessary.

In the embodiment shown in FIG. 19, packaging bags 10 are obtained with a very wide upper transverse seal 150e, which enables a slot perforation 42 to be provided.

According to a further embodiment according to FIGS. 20 to 22, a packaging bag 10 is obtained from a rectangular folding blank 250 with two long sides 251, 252 and two narrow sides 253, 254. The folding blank 250 has one in its central region to form one Break-open or tear-open tab 20 has a separating perforation 20 with a U-shaped line and with first separating perforation sections 260, 261 running approximately parallel to the cut longitudinal sides 251, 252, with adjoining, approximately conically tapering second separating perforation sections 260a, 261a, which are parallel to the Narrow sides 253, 254 of the folding blank 250 extending third separating perforation section 265 are connected. The folding blank 250 is folded so that the first cut section 270 carrying the tear-open or tear-open tab 20 forms the front wall 11 of the packaging bag 10, the second cut-out section 271 above the tear-open or tear-open tab 20, forming the rear wall 12 of the packaging bag 10 is being folded by 180 ^o to which the break-up or tear-open tab 20 carrying first blank section 270th The third cut-out section 272, which is below the break-open or tear-open tab 20, is folded 180 ^o against the inner wall surface 270a of the first cut-out section 270 and lies between the first cut-out section 270 and the second cut-out section 271, the third cut-out section 272 being dimensioned so long that this third cutting section 272 lies in the region of the removal opening 25 covered by the tear-open or tear-open tab 20 and is underneath the loosened break-open or tear-open tab 20. The long sides 251, 252 and the narrow sides 253, 254 of the cut sections 270, 271, 272 lying one on top of the other are connected to one another by means of an adhesive or welded connection 280. Before the bottom-side welding is applied, the material is inserted with the pre-folded packaging bag 10 standing vertically (FIG. 22). The top area shows a wide weld. The slot perforation 42 of the suspension device 41 is provided in the edge section formed in this way. In addition to edge welding, edge sealing can be carried out. However, other adhesive connections can also be used here. If the material has been inserted in the direction of the arrow X3, the filling opening 17 is closed at the bottom by sealing or gluing. The folding blank 250 can also be combined in the form of a plurality of contiguous folding blanks arranged in a row to form a roll-up strip blank 60 (FIG. 20). The bag-shaped packaging bag 10 is then obtained by appropriate folding (FIG. 21). The edge welds or seals are shown at 280 (Fig. 22).

The folding blanks 50, 150, 250 are also provided with an upper tab-shaped section 40 with a suspension device 41, which is designed as a slot perforation 42 or round perforation. This tab-shaped section 40 can be connected to the individual folding blanks 50, 150, 250 by means of a separating perforation 43.

The advantage of the tear-open or tear-open tabs 20 provided with a grip section or grip edge 165 is that, due to the notched corners, ie notches or recesses, 166, 166a is clearly visible to the user, where to open and later remove the contents of the package from the packaging bag 10 must be applied. It is irrelevant whether the separation perforation for the formation of the tear-open or tear-open tab 20 varies diagonally from the center outside or not. It is essential that the reclosure is ensured by the torn-open or tear-open tab 20 as an insert tab. After opening by pulling up the grip section or grip edge 165 up to the folded edge, it is possible to reinsert it into the bag-shaped packaging bag that has become visible after removing the product part. This pocket formation has become possible because the lower half of the blank is folded upwards when the pocket is being formed and there is an exclusive sealing in the area of the longitudinal edges. Before sealing in the area of the longitudinal edges, the products are inserted into the pre-shaped pocket by machine, although manual insertion is also possible.

The folded blanks 150, 250, when they are combined to form a band blank 60, are separated from one another for the production of the individual packages, wherein separating perforations can also be provided in order to facilitate the separation. Otherwise, the separation takes place after the folding process by means of mechanical means.

Claims (22)

Resealable packaging bag, characterized in that the packaging bag (10), which has a rectangular, square or other geometric shape, has a front wall (11) and a rear wall (12) connected to the front wall (11) in three side areas (13, 14, 15) ) is formed, wherein in the fourth side region (16) a filling opening (17) which can be closed after filling the packaging bag (10) is provided, that in the front wall (11) or rear wall (12) of the packaging bag (10) a break-open or Tear-open tab (20) is incorporated and that in a partial area of the removal opening (25) covered by the tear-open or tear-open tab (20) there is a section covering this in a section (21), from which the front wall (11) or rear wall (12 ) separated tear-open or tear-open flap (20) is arranged on the inside of the flap under the flap holding blank (30). Resealable packaging bag according to claim 1, characterized in that the tab-holding blank (30) under the tear-open or tear-open tab (20) on the inner wall surface of the front or rear wall (11; 12) of the tear-open or tear-open tab (20) Packaging bag (10) is attached. Resealable packaging bag according to claim 1, characterized in that the opening or Tear-open tab (20) folded-under tab holding blank (30) as a tab (30 ') on the front or rear wall (11; 12) of the packaging bag (10), which is free of tear-open or tear-open tabs, and folded on the inner wall surface of the tear-open or tear-open tab (23 ) receiving wall of the packaging bag (10) is fastened by means of an adhesive connection (26). Resealable packaging bag according to one of claims 1 to 3, characterized in that the tab-holding blank (30) which is underneath the tear-open or tear-open tab (20) is rectangular. Resealable packaging bag according to one of claims 1 to 4, characterized in that the tear-open or tear-open tab (20) consists of a trapezoidal blank (20a) with conical side edges (20b, 20c) and a side edge (20d) connecting them and is connected by means of the three side edges (20b, 20c, 20d) via a separating perforation (22) to the surface of the wall (11; 12) of the packaging bag (10) having the tear-open or tear-open tab (20), the break-open - or tear tab (20) forming blank (20a) with a fourth side edge (20e) adjacent to the upper edge (13a) of the packaging bag (10) on its wall (11; 12) is folded. Resealable packaging bag after one of claims 1 to 5, characterized in that the tab holding blank (30) consists of paper, foil or another suitable material. Resealable packaging bag according to one of claims 1 to 6, characterized in that the packaging bag (10) consists of two wall blanks (111, 112) forming its front wall (11) and rear wall (12), which are connected to one another via a fold line (113) and are congruent are trained. Resealable packaging bag according to claim 7, characterized in that each wall blank (111; 112) forming the packaging bag (10) is rectangular or square. Resealable packaging bag according to one of claims 1 to 8, characterized in that the filling opening (17) can be closed by means of a closure flap (18) which is folded onto the wall blank (111) of the packaging bag (10) which the opening or The tear-open tab (20) has a wall blank (112) opposite, the closure flap (18) being connected to the wall blank (112) via an adhesive connection (19). Resealable packaging bag according to one of claims 1 to 9, characterized in that the packaging bag (10) has an upper, tab-shaped section (40) with a suspension device (41) which is designed as a slotted perforation (42) or round perforation. Resealable packaging bag according to claim 10, characterized in that the tab-shaped section (40) is firmly connected to one or both wall sections (111, 112) of the packaging bag (10). Resealable packaging bag according to claim 10, characterized in that the tab-shaped section (40) is connected to the two wall cuts (111, 112) of the packaging bag (10) via a separating perforation (43). Resealable packaging bag according to one of claims 1 to 12, characterized in that the packaging bag (10) is formed from a folding blank (50) which consists of two rectangular, congruent in the folded state and the front wall (11) and the rear wall (12) of the packaging bag (10) forming wall blanks (111, 112) which are connected to one another via a folding line (113) running in the longitudinal direction of the blank and of which one (112) of the two wall blanks (111, 112) is provided with a tearing or tear-open flap (20) which is connected to the wall cut (112) via a separating perforation (22) and has the trapezoidal shape, the separating perforation (22) being U-shaped, with the formation of a holding web (23) formed in the wall cut surface so that the break-open or Tear-free wall cut (111) in the area of its three free side edges (51, 52, 53) via fold lines (18 ', 18a', 18b ') tabs (18, 18a, connected to the wall blank (111) 18b), which are provided with a self-adhesive coating or another suitable adhesive, and in that the wall cut (112) having the break-open or tear-open tab (20) has an inner side of the wall with an adhesive application (26) for one who is Tear-off flap (20) covered removal opening (25) is provided with this tab-covering blank (30), which, after the two wall-blanks (111, 112) have been unfolded to form the packaging bag (10), lies inside on the inner wall surface (12a) of the tearing-open or tear-open flap (20) having wall cut (112) is held. Resealable packaging bag according to one of claims 1 to 12, characterized in that the packaging bag (10) is formed from a folding blank (50) which consists of two rectangular, congruent in the folded state and the front wall (11) and the rear wall (12) of the packaging bag (10) forming wall blanks (111, 112) which are connected to one another via a folding line (113) running in the longitudinal direction of the blank and of which the one (112) of the two wall blanks (111, 112) with a tear-open or tear-open flap (20 ) is provided, which is connected to the wall cut (112) via a separating perforation (22) and has the trapezoidal shape, the separating perforation (22) being U-shaped, with the formation of a holding web (23) formed in the wall cut surface so that the break open - or tear-open tab-free wall cut (111) in the area of its has three free side edges (51, 52, 53) via fold lines (18 ', 18a', 18b ') with tabs (18, 30', 18b) connected to the wall cut (111), of which the tab folded on the lower wall cut narrow side ( 30 ') has a length as a flap holding blank (30) which is dimensioned such that when the wall blanks (111, 112) are folded together, the flap (30') with its free end (30a) in the region of the opening or tear-open flap (20) covered removal opening (25), and that the wall cut (112) having the tear-open or tear-open tab (20) has on its inner wall surface (12a) with a self-adhesive coating (26) or another suitable adhesive for fastening the tab (30 ') is provided on the wall blank (112). Resealable packaging bag according to one of claims 1 to 12, characterized in that the packaging bag (10) consists of a rectangular folding blank (150) with two long sides (151, 152) and two narrow sides (153, 154), that the folding blank (150) is adjacent to its top Narrow side (153) for forming a tear-open or tear-open tab (20) has an approximately U-shaped separating perforation (22) with two adjacent first separating perforation sections (160, 161), which run adjacent to, parallel to the cut longitudinal sides (151, 152) and which are conical Connect tapering, second separating perforation sections (160a, 161a), which extend into a handle section or parallel to the narrow side (153) Grip edge (165) at the end of the tear-open or tear-open tab (20), wherein the grip section or the grip edge (165) is formed by triangular notches or recesses (166, 166a) in the edge (153) of the folded blank (150), that the break-up bzw.- tear tab (20) carrying the first portion (170) of the folding blank (150) ^o folded in the area of ends of the first Trennperforationsabschnitte (160,161) 180 and to the remaining portion (171) of the folding blank (150) is folded and that a second cutting portion (173) of the break-up or tear-open flap (20) opposite the third blank portion (172) ^{o o} folded through 180 under the first blank portion (170) so 180 that the break-up or The first cut section (170) carrying the tear-open tab (20) carries the folded second cut section (173) and the removal opening (25) to the tab, which is covered by the tear-open or tear-open tab (20) overlaps in sections, the longitudinal sides (151, 152) being connected to one another by means of an adhesive or welded connection. Resealable packaging bag according to one of claims 1 to 12, characterized in that the packaging bag (10) consists of a rectangular folding blank (250) with two long sides (251, 252) and two narrow sides (253, 254), that the folding blank (250) in its central area for Forming a break-open or tear-open tab (20) has a separating perforation (22) with a U-shaped line and approximately parallel to the longitudinal sides of the blank (251, 252) has first separating perforation sections (260, 261) with adjoining, approximately conically tapering second separating perforation sections (260a, 261a), which are connected via a third separating perforation section (265) running parallel to the narrow sides (253, 254) of the folded blank (250) and that the folding blank (250) is folded so that the first blanking section (270) carrying the tear-open tab (20) forms the front wall (11) of the packaging bag (10), the second blanking section (271) above the break-open or tear-open tab (20) is formed by forming the rear wall (12) of the packaging bag (10) by 180 ^o to the first cut section (270) carrying the break-open or tear-open tab (20) and which is underneath the break-open or Tear-off tab (20) of third cut section (272) folded 180 ^o onto the inner wall surface (270a) of the first cut section (270) and un d lies between the first (270) and the second cut section (271), the third cut section (272) being dimensioned so long that this third cut section (272) is in the region of the area covered by the tear-open or tear-open tab (20) The removal opening (25) is lying and can be gripped by the loosened opening or tear-open tab (20), and that the long sides (251, 252) and the narrow sides (253, 254) of the superimposed blank sections (270, 271, 272) of the folded blank (250) are connected to one another by means of an adhesive or welded connection (280). Resealable packaging bag according to one of Claims 13 to 16, characterized in that a plurality of folding blanks (150, 250) are combined to form a roll-up band (60) and can be formed into packaging bags (10) by pocket folding and shaping and subsequent separation. Resealable packaging bag according to one of claims 13 to 17, characterized in that the folding blank (50; 150; 250) is provided with an upper, tab-shaped section (40) with a suspension device (41) which is designed as a slotted perforation (42) or round perforation is. Resealable packaging bag according to one of claims 1 to 18, characterized in that the tab-shaped section (40) having the hanging device (41) is connected to the folding blank (50; 150; 250) by means of a separating perforation (43). Resealable packaging bag according to one of claims 1 to 18, characterized in that the tab-shaped section (40) having the hanging device (41) is connected to the folding blank (50; 150; 250) by means of point gluing (45). Resealable packaging bag according to one of Claims 1 to 20, characterized in that the tab-shaped section (40) with the hanging device (41) consists of two congruent ones, by means of an adhesive or welded connection connectable partial blanks (40a, 40b), which are held side by side on the wall blanks (111, 112). Resealable packaging bag according to one of claims 1 to 21, characterized in that the packaging bag (10) or the folded blanks (50; 150; 250) consist of paper, a paper-plastic film composite or plastic film.

Images