EP2535294B1 - Bag with reclosable top end comprising a closing flap within the side seam - Google Patents

Abstract

The bag (1) has a side pleat (9) extending between a head portion (5) and a floor area (7) i.e. Finn, along a longitudinal direction. The side pleat is limited to front and rear walls (3, 4) by longitudinal seal seams (35, 36). Width of locking tab (17) is adapted to width of the side pleat, and the tap exhibits an edge consisting of first, second and third edge zones, which are arranged one above the other. The locking tab is fixed along an edge at an inner side by the second and third edge zones under a recess of a coherent region between the second and third edge zones. An independent claim is also included for a device for manufacturing a bag from a film.

Description

TECHNICAL FIELD

The invention relates to a bag with a gusset.

The invention further relates to a method for producing a bag according to the first paragraph.

BACKGROUND

Such a bag mentioned above, for example, in the published utility model DE 20 2006 020 724 U1 disclosed. The pouch described therein has a gusset interposed between a front wall and a rear wall and a reclosure disposed on the inside of the gusset with a first closure member and a second closure member for forming a resealable chute in an opening region in the gusset. The chute is formed by moving out that portion of the gusset located from the opening area towards the foot area of the bag. The re-closure has a sealing flap which covers the opening region and its edge regions which adjoin it and which is secured along its edge with the recess of a continuous region on the inside of the side fold. The closing flap is at least partially made of a sealable material and is defined along its edge with the recess of the contiguous area on the inside of the gusset by a sealed seam. The sealed seam has the shape of an inverted "U", wherein a U-web is located above the opening region, that is, starting from the opening region in the direction of the head region of the bag. The two adjoining the U-web U-legs extend down towards the bottom area. Between the U-legs of the opening area runs.

Such a bag involves the considerable risk during pouring or dumping of the packaged product that packaged goods can accumulate in the interior of the bag adjacent to the closing flap and that part of the side fold to which the closing flap is fastened, ie essentially that part of the side fold. is located above the opening area, is pressed by the weight of the above the opening portion or the opening accumulating packaged goods to the outside and, as soon as enough packaged goods accumulated, the located above the opening portion of the gusset folds outward. As a result, the chute located below the opening area is largely closed and consequently prevents a swift and well-dosed pouring out of the packaged goods or completely prevented dumping, because granular packaged goods can block the now quite narrow pouring opening of the chute.

The DE202010014773U1 discloses a pouch having a reclosable system integrated into the gusset comprised of two opposing closure strips which are both disposed on the inner surface and mid-region of the gusset and extend to the edges of the gusset. This arrangement allows four reinforcing longitudinal sealing seams at the edges of the gussets, which are not interrupted in the region of the closure strips.

It is therefore an object of the invention to develop a bag in such a way and to provide a method for its production, that the above-mentioned problems are avoided.

SUMMARY OF THE INVENTION

This object is achieved on the one hand by a bag according to claim 1 and on the other hand by a method according to claim 9.

The subject of the invention is therefore a bag made of a film having an outer side and a sealable inner side, and having a front wall and a rear wall and a head region and a foot region and at least one gusset extending longitudinally between the head region and the foot region, the side gusset being delimited by a first longitudinal seal seam toward the front wall and bounded by a second longitudinal seal seam toward the back wall and having an opening portion and having a reclosure attached to the inside, wherein the reclosure has a closing flap which covers the opening area and adjoining edge areas, wherein the closing flap has a width adapted to the width of the side fold and along its edge, which has a first edge zone and an adjoining second edge zone and a third edge zone, with a recess contiguous area between the second and third edge zone, in which a closure part is arranged, on the inside by the in the first Sealed longitudinal seam sealed second edge zone and sealed in the second longitudinal sealing seam third edge zone.

In addition, the subject of the invention is a method for producing a bag from a film comprising a side intended as an outer side and a sealable inside of the bag, the bag having a front wall and a rear wall and a head portion and a foot portion and at least one longitudinally between the The gusset has a gusset and footer region, the gusset being delimited with a first longitudinal seal seam toward the front wall and a second longitudinal seal seam toward the back wall, the process comprising the steps of: feeding the film and defining an opening region within a region the film intended to form the gusset, and positioning a closure tab so as to form a reclosure within the area of the film intended to form the gusset such that the closure tab engages the opening region and adjacent thereto Covered edge portions and along its edge with the recess of a contiguous area in which a closure member is arranged, is fixed to the inside, wherein the edge has a first edge zone and an adjoining second edge zone and third edge zone and the Verschließlasche one to the width of the gusset has adapted width, so that the second edge zone extends into a region of the film provided for forming the first longitudinal seam seam and the third edge zone extends into a region of the film provided for forming the second longitudinal seam seam, and producing the first longitudinal seam seam with sealing in of the second edge zone, and producing the second longitudinal sealing seam with sealing in the third edge zone.

The various walls of the bag may be present as individual wall segments and joined together by gluing or sealing their edges. Also, extrusion seams are possible. Also, a film can be formed into a tube and contacting edges of the film, more specifically the inside of these edges, sealed together to make the bag. In addition, in such a tube shape by folding the tube wall, a side fold or two side folds can be produced. At such fold edges and the structure of the bag reinforcing longitudinal sealing seams may be formed.

The foot can be formed flat or realized in the form of a fin.

The opening area may be defined by an already in the film by e.g. Punching a film part prefabricated opening or be formed by a cut. On the other hand, the opening region can also be formed by an originally closed part of the film, which is opened only when the bag is first opened or removed from the bag. The opening region may have a material weakening limiting the opening, which weakening material defines a region of a flap which can be completely or partially released from the gusset, wherein a chute can be formed after opening or removal of the flap. The weakening of the material can be produced by the action of a laser beam or by the production of a perforation or embossing. There may also be a combination of these measures. The material weakening may be a continuous line or in the form of a broken line. However, the opening may also already be incorporated in the film and this opening may be closed by an additional closing tab applied on the outside of the film, which has to be torn away from the opening in order to open it. In both cases, an original packed condition can be detected when the opening is completely closed, so there is no damage to the tab. In the method of manufacturing the bag, the opening area may be formed into a bag prior to processing the film. be defined in their manufacture. However, the opening area can also be defined or produced in the course of processing the film into a bag.

A chute is formed with the opening opened through a part of the side fold adjacent to the opening area (eg, facing the foot area), which is pulled away from another part of the side fold located on the opposite side of the opening area (eg, the head area) the area between the front wall and the rear wall is pulled out.

The bag may also include actuating means for actuating the reclosure disposed on the gusset adjacent the opening portion, the actuating means having a grip portion for engaging and a mounting portion for securing the gripping portion to the gusset. The actuating means may be formed by a single or multi-layer film strip, either transversely to the longitudinal direction or parallel to the longitudinal direction, preferably at the position of a central Folding line of the gusset either on the outside or on the inside, is attached. If it is attached to the inside, it is led out of the bag through a slot along the fold line, so that the grip area can be easily gripped from the outside. In the case of the inside fastening, the slot, and preferably also the fastening area attached to the inside, can be sealed off with an inside attached cover sheet. The attachment area as well as the cover sheet can be arranged between the inside and an element of the reclosure. The attachment area may engage immediately adjacent the opening area at the location of the gusset to which is attached one part of the reclosure which cooperates with the other part of the reseal fastener attached to the closure tab.

As a film, a single-layer film or a multi-layer film can be used. A multilayer film may e.g. be made by laminating or coextrusion.

By the measures according to the invention is achieved in an advantageous manner that folding out of the upper part (located above the opening area in the direction of the head area) of the gusset is reliably avoided because the closing sheet is now not only supported on the inside of the film of the gusset, as this is the case with the known bag, but the power transmission is displaced in the longitudinal sealing seams. The in accordance with the shape of the gusset inwardly arched in the bag closing flap, which tends because of their own mechanical elastic properties tends to convert the curved shape in a planar shape, so no longer relies along its edge within the gusset itself but to the much more stable trained longitudinal sealing seams. The interaction between the elastic properties of the closing tab and its storage areas in the two longitudinal sealing seams increases the load capacity of the closing tab in the inwardly curved form as compared to the conventional fastening of the closure bar on the inside of the side fold.

In addition, advantageously, in the entire region of the width of the side fold at the location of the closing flap, there is now a two-layer structure consisting of the foil of the side fold and the closing flap, which leads to Stability of the folded inside between the front and back wall folded and clamped between the front and rear wall gusset contributes.

In addition, the advantage is obtained by this measure that for the attachment of the adjoining the first edge zone second and third edge zone of Verschließlasche on the inside no separate sealing tool and consequently no separate step is necessary. Rather, in the production of the longitudinal sealing seams in a single step, the respective longitudinal sealing seam is produced at the same time and the closing flap is fastened or sealed in the respective longitudinal sealing seam. The manufacturing process can thus run more efficiently and cost-effectively than is the case with the known method.

Further, particularly advantageous embodiments and modifications of the invention will become apparent from the dependent claims and the following description. In this case, the method can also be developed according to the dependent claims to the bag or vice versa, the bag according to the dependent claims for the process. Advantages that have been discussed in connection with a claim of one category apply analogously to those of the other category.

The first and the second longitudinal sealing seam have a longitudinal sealing seam width. A "width adapted to the width of the gusset" is intended to mean that the maximum width of the closing flap can be so large that the second and the third edge zone (ie the right and the left edge zone) the respective longitudinal sealing seam - possibly with the recess Buckling or folding region of the film at the outer edge of the longitudinal sealing seam - completely fills, or that the width of the closing flap may be slightly smaller than the aforementioned maximum width, so that the third and the fourth edge zone extend only into a part of the respective longitudinal sealing seam and thus only partially fill the respective longitudinal sealing seam viewed from the inside to the outside. Accordingly, depending on the selected width of the closure flap, the second edge zone along the full longitudinal seal seam width or along a portion of the longitudinal seal seam width can be sealed into the first longitudinal seam and the third edge zone sealed into the second longitudinal seam along the full longitudinal seam width or along a portion of the longitudinal seal seam width. If the respective edge zone is sealed along the full longitudinal sealing seam width, a particularly good anchoring of the Obtain closure flap in the respective longitudinal sealing seam, which is favorable, for example, with a relatively small longitudinal sealing seam width. However, if the longitudinal sealing seam width is relatively large, it may be sufficient for the respective edge zone to be sealed into the longitudinal sealing seam along only a part of the longitudinal sealing seam width in order, for example, not to excessively influence the outer appearance of the longitudinal seam seam and to keep it as narrow as possible, at least optically.

According to a further aspect of the invention, the head region is closed with a top seal seam and the first edge zone is sealed into the top seal seam. Thus, the advantage is achieved that not only for the attachment of the second and the third edge zone but also for the upper, head-side edge of the closing flap no separate tool and consequently no separate step is necessary. The manufacturing method can thus be made more efficient and cheaper than is the case with the known method, whereby the manufacturing costs of the bag are also favorably influenced.

In addition, a better use of the available total bag volume and thus ultimately also a more efficient use of the film is given because the integration of the upper edge (first edge zone) of the closing flap into the top-seal seam enables the opening area or opening to be as close as possible for the first time the top seal can be brought. Thus, despite tightly closed top seal, the chute can be opened close to the top seal or immediately adjacent to the top seal. This is possible only because a separate sealing seam between the top seal seam and the opening region for attaching the upper edge (first edge zone) of the closure flap is dispensed with. By this measure, the use of the film is optimized in a production of the bag, because of a de facto unusable upper bag volume above the lower edge (located towards the foot area) of the closing flap can be largely dispensed with. Thus, the film used in bag making can be used to a greater extent to produce a useful lower bag volume, ultimately resulting in more efficient film usage. The bag can ultimately be made smaller or, viewed differently, foil material can be saved for a given usable bag volume. The reduced in relation to the known bag upper bag volume has an additional effect Favorable to the problem of the known bag from folding out of lying above the opening portion of the gusset from. A reduced upper bag volume ultimately also means a lower maximum pressure on the closure tab from inside the bag.

The top seal has a top seal margin. Similar to the two longitudinal sealing seams, it may be advantageous if the first edge zone is sealed into the top seal seam along the full top seal seam width or along part of the top seal seam width. Again, the considerations discussed in relation to the longitudinal seam approach in a figurative sense with respect to anchoring in the top seal and outer appearance of the top seal.

The opening region or the opening or ultimately an upper edge of the chute can be located at least within a region defined by the size of the closing tab at a freely selectable distance adjacent to the top-seal seam. According to a preferred embodiment, the opening area or the opening or the upper edge of the chute is arranged directly adjacent to the top seal seam. This means that the upper edge of the chute can either be spaced around a tab that can be pulled out of the gusset or directly below the top seal. In both cases, the advantage is obtained that the upper, unusable bag volume (above the lower edge of the closing tab) can be kept as low as possible. Immediately adjacent to the top seal should mean here in a range of 0 to 5 cm, preferably in a range of 0.5 to 2 cm.

In particular, when a chill as ready as possible is desired, which may be the case, for example, with a bag which is already basically scarfed or even with a bag filled with relatively coarse-grained packaged goods, it is advantageous if the closure part extends from the first longitudinal seam to the end extends to the second longitudinal seam, so along the entire width of the gusset. Then, the entire width of the gusset can be used as width of the chute. In the event that this is not desired, however, the closure part can also be made narrower. Then, suitably, the width of the chute to the width of the closure part adapted to be narrower than the width of the gusset dimensioned.

Furthermore, it has proved advantageous for the closure part to have a first closure element fixed on the inside of the side fold and a second closure element cooperating therewith fixed to the closure flap, and the first and the second closure element immediately adjacent to the opening region or at a distance from the latter Opening portion is arranged in the direction of the foot region, wherein the first closure element on the inside and the second closure element are fixed to that of the inside facing side of the closure flap. Depending on the desired design and planned size or width of the opening area, it may be advantageous if one or the other form of training is used. The size of the upper bag volume can thus be determined as a function of the width of the closure element and / or the width of the opening region. In the present case, the width is measured in the longitudinal direction of the gusset. As a distance, a range of 0 to 5 cm, preferably a range of 0 to 2 cm, are used.

The closure elements may be formed by parts of a zipper. According to a preferred embodiment, the first closure element is a first Velcro strip with a first Velcro area, which is bounded on the one hand by a first sealing flange located towards the head region and on the other hand by a second sealing flange located towards the foot region, and the second closure element is a second Velcro strip with a second Velcro region which is delimited on the one hand by a third sealing flange located towards the head region and on the other hand by a fourth sealing flange located towards the foot region, wherein the third sealing flange is located immediately adjacent to the opening region or at a distance from the opening region in the direction of the foot region and sealed with the sealing tongue , The two Velcro strips are parallel to each other and transverse to the longitudinal direction preferably 90 ° transverse to the longitudinal direction. The size of the upper bag volume can now be determined as a function of the width of the third sealing flange. As a distance, a range of 0 to 5 cm, preferably a range of 0 to 2 cm, are used.

In the production of the bag, it is advantageous if the production of the top seal occurs after the production of the first and the second longitudinal seam. This ensures that first the reclosure can be positioned on the inside of the flat spread film, then a Hose formation and production of the longitudinal sealing seams with sealed second and third marginal zone of the closing sheet and structuring of the side folds can take place and only after that the pouch is closed on the head side. The production of the respective sealing seams (longitudinal sealing seams and top seal seam) takes place with the aid of pairs of sealing jaws, which are heated and pressed against one another with sections of the film lying between them.

The Velcro areas of the two Velcro strips can be identical or designed differently.

The respective gusset may be formed along the entire length of the bag or only along an area below the top seal.

The bag can already be closed at the head end during its manufacture and can be preassembled open on the foot side or open on the head end and closed on the foot side, thus being delivered. In both cases, the method of its manufacture for closing the bag comprises the step of closing the head region with sealing of the first edge zone in the top seal. This process step may e.g. be carried out at a bag manufacturer. But it can also be carried out at a bottler who fills the pre-assembled bag open at the top with packaged goods and then closes it with the top seal. The bag produced in this way has a top-seal seam with a sealed-in first edge zone.

BRIEF DESCRIPTION

Fig. 1

in perspektivischer Ansicht einen erfindungsgemäßen Beutel mit einem Detailbereich;

Fig. 2

eine Ansicht des Detailbereiches gemäß der Fig. 1 mit einer ersten Schnittlinie entlang einer Kopfsiegelnaht;

Fig. 3

eine Detailansicht entlang der ersten Schnittlinie durch die Kopfsiegelnaht;

Fig. 4

einen Ausschnitt einer bei einem erfindungsgemäßen Verfahren bearbeiteten Folie mit einer zweiten Schnittlinie;

Fig. 5

eine Detailansicht entlang der zweiten Schnittlinie;

Fig. 6

eine Ansicht gemäß der Fig. 2 mit geöffneter Schütte;

Fig. 7

eine Detailansicht entlang einer Schnittlinie durch eine in der Fig. 2 dargestellte zweite Längssiegelnaht;

Fig. 8

eine Detailansicht entlang einer Schnittlinie durch eine in der Fig. 2 dargestellte erste Längssiegelnaht;

Fig. 9

auf analoge Weise wie die Fig. 1 ein weiteres Ausführungsbeispiel eines erfindungsgemäßen Beutels.

The invention will be explained in more detail below with reference to the accompanying figures with reference to an embodiment, to which the invention is not limited. The same components are provided with identical reference numerals in the various figures. They show in a schematic way:

Fig. 1

a perspective view of a bag according to the invention with a detail area;

Fig. 2

a view of the detail area according to the Fig. 1 with a first cut line along a top seal seam;

Fig. 3

a detail view along the first section line through the top seal;

Fig. 4

a detail of a processed in a method according to the invention film with a second cutting line;

Fig. 5

a detailed view along the second section line;

Fig. 6

a view according to the Fig. 2 with open chute;

Fig. 7

a detailed view along a section line through a in the Fig. 2 illustrated second longitudinal seam;

Fig. 8

a detailed view along a section line through a in the Fig. 2 illustrated first longitudinal sealing seam;

Fig. 9

in an analogous way like that Fig. 1 a further embodiment of a bag according to the invention.

DESCRIPTION OF THE EMBODIMENTS

In the Fig. 1 a bag 1 is shown, which is formed as a gusseted bag and which is made of a flexible film 2 made of plastic, which forms the wall of the bag 1. Although not shown in detail, the film 2 has multiple layers, wherein at least one outer side 10 (or outer wall or outer layer of the film 2 called) and a sealable inner side 16 (or outer wall or outer layer of the film 2 called) (see, eg Fig. 3 or 4 and 5 ) exists. The Indian Fig. 1 illustrated bag 1 has a front wall 3 and a rear wall 4 and a head portion 5, which is closed along its entire width with a top seal 6, and a foot portion 7, which is closed along its entire width with a Fußsiegelnaht 8, and a longitudinal direction between the head area and the foot area extending the front wall 3 with the rear wall 4 connecting first side fold 9. In addition, the bag 1 has a second, but in the perspective of Fig. 1 not visible and therefore only hinted, gusset 26 on. The first gusset 9 is bounded by a first longitudinal sealing seam 35 towards the front wall 3 and by a second longitudinal sealing seam 36 towards the rear wall 4. The second gusset 26 is limited by a third longitudinal sealing seam 37 toward the front wall 3 and by a fourth longitudinal sealing seam 38 toward the rear wall 4. The second gusset 26 will not be discussed further below, because the invention will be discussed with reference to the first gusset 9. The respective end of each side gusset is sealed to itself at the head end in the area of the top seal seam 6 as well as at the foot side in the area of the foot seal seam 8 in order to obtain the illustrated shape of the bag 1. The bag 1 can be closed on the head side and opened on the foot side or opened at the head end and prefabricated on the foot side. The unilaterally open bag becomes then delivered to a bottler, there filled depending on the situation by the still open head area 5 or foot area 7 with packaged goods and then closed by the respective sealed seam 6 or 8.

Fig. 2 puts one in the Fig. 1 All longitudinal sealing seams 35 to 38 have a longitudinal sealing seam width LSW measured in the transverse direction to the longitudinal direction of the side gusset 9. Measured with respect to an outer edge of the longitudinal sealing seams 35 or 36, the fully closed side gusset 9 has a side-folding depth GD which is in Fig. 3 is registered. In the Fig. 2 is further registered a KopfsiegelnahWeite HSW, which is measured in the longitudinal direction of the gusset 9.

The first gusset 9 has an opening portion 11 with a reclosure 12 attached to the inside 16 (not visible from outside). The reclosure 12 serves to form a resealable chute 24 (see Fig. 6 ).

The reclosure 12 has a closing flap 17 which covers the opening area 11 and adjacent edge areas. Details of the closing tab 17, their positioning and their interaction with other components are in the Fig. 3 . 4 and 5 shown. The closure flap 17 is fixed along its edge 18 with the recess of a contiguous region 19 on the inner side 16 of the first gusset 9. The rim 18 delimits a first edge zone 32, which extends substantially parallel to the top seal 6, a second edge zone 33 and a third edge zone 34, wherein the second and third edge zones 33 and 34 are substantially parallel to the longitudinal direction of the first edge zone 32 extend in the direction of the foot area 7. The edge zones 32 to 34 are in the FIG. 4 hatched shown.

In the contiguous region 19, a closure member 20 is arranged, which will be discussed below.

The closing flap 17 has a width which, adapted to the width of the side fold 9, in the present case slightly narrower (about 1 mm) than the width of the side fold 9. The closing flap 17 is at least on both sides (front and back of the Closing flap 17) over the entire surface of a sealable material and is therefore sealable on both sides. When setting the closure flap 17 is moved so that the first edge zone 32 in the Top seal 6 is sealed. In addition, the second edge zone 33 is sealed in the first longitudinal sealing seam 35, which in a sectional view of Fig. 8 along one in the Fig. 2 illustrated sectional line EE is visualized, and the third edge zone 34 is sealed in the second longitudinal sealing seam 36, which in a sectional view of Fig. 7 along one in the Fig. 2 illustrated section line DD is visualized.

The first gusset 9 also has on the first gusset 9 adjacent to the opening portion 11 arranged actuating means 13 for actuating the reclosure 12 and consequently also for actuating the chute 24 (see Fig. 1 ). The actuating means 13 have a grip area 14 for engagement with the fingers of a user's hand (not shown) and a fastening area 15 for securing the grip area 14 to the outside 10 of the side fold 9, the grip area 14 in the present case with the aid of adhesive ( not shown) is attached to the outside 10 ( Fig. 1 . Fig. 2, Fig. 3). Fig. 2 shows the closed chute 24 with the reclosure 12 in the closed state. Fig. 6 shows the reclosure 12 and the chute 24 in the open state.

The grip area 14 is oriented transversely to the longitudinal direction and positioned centrally to the side fold 9. The gusset 9 has a longitudinally extending central fold line 25 and the handle portion 14 is folded according to the fold line 25. Also, the mounting portion 15 is oriented and folded in an analogous manner as the handle portion 14 and closer to the opening portion 11 and the opening 23 arranged as the handle portion 14. With the help of as far as possible to the edge of the opening 23 zooming attachment region 15 is reached in that the chute 24 can be opened as far as possible and when closing the chute 24 the pressure force on the chute 24 in the region of the center of the reclosure 12 unfolds its full effect, so that the reclosure 12 in the region of the fold of the side fold 9, So in the area of the central fold line 25, can be closed clean and there are no unwanted open areas or channels.

In the manufacture of the bag 1, the procedure according to the invention is followed. First, (see Fig. 4 ) fed to the film 2 in the form of a film strip, as by the in the FIG. 3 indicated arrow 30 is indicated. The film 2 is for reasons of clarity in the Fig. 4 by means of a series of marking lines M _i (with i = 1 to 16) attached to the actually processed film 2 are of course not present, structured in the forming the bag 1 areas. Basically, the bag 1 is made by forming a tube, wherein a right film edge 31 is folded over to the left film edge 47 of the film strip, so that there are limited by the reference numeral 38 zones of the inner side 16 to each other. By heat action along these zones, the fourth longitudinal sealing seam 38 is produced, which seals the bag 1 along the side.

Likewise, with the aid of the marking lines M _i, those regions which are intended for the formation of the other three longitudinal sealing seams 35, 36, and 37 are delimited. Marking lines M9, M10 and M11 which are interrupted with a single point indicate folding edges at which the inner side 16 of the film 2 is folded against each other, after which the three longitudinal sealing seams 35, 36 and 37 are produced by heat. Marking lines M12 and M13 interrupted by two dots indicate the position of the first fold line 25 of the first side fold 9 and the position of a second fold line 29 of the second side fold 26. Transverse to the zones of the film 2 intended for the longitudinal sealing seams 35 to 38 are those intended for the foot seam 8 (between M15 and M16 for the preceding bag 1) and the top seam 6 (between M14 and M16 for the bag 1 currently being processed) Zones, wherein after the formation of tubes and formation of the side gussets 9 and 26, the top seal 6 is produced and a bag 1 is separated from another adjacent bag 1 along the marking line M16. Through the open foot area 7 through the bag 1 with filling material (not shown) is filled and then the Fußsiegelnaht 8 produced.

In detail, at the beginning of the production process in the planar film 2, the opening region 11 is defined, for example by creating a laser perforation in the region designated as the first gusset 9, just beside the region designated as the top seal 6 (see the result visualized in FIG Fig. 4 ). The laser perforation defines a continuous line that has an opening 23 (see FIG Fig. 6 ) limited to filling material removal. Thereafter, the actuating means 13 is fixed by gluing the attachment portion 15 to the outside 10 on that side of the film 2 which is intended as the outside 10 (see the result visualized, for example, in FIG Fig. 4 ).

The closure part 20 is realized by a Velcro fastener and is divided into a first closure element 27 and a cooperating therewith second closure element 28, which in cross-section in the FIG. 5 are shown in detail. The first closure element 27 has a first Velcro strip 39 with a first Velcro region 40, a first sealing flange 41 and a second sealing flange 42. The second closure element 28 is formed identically to the first closure element 27 and has a second Velcro strip 43 with a second Velcro region 44, a third sealing flange 45 and a fourth sealing flange 46.

In the manufacturing process, first the first closure element 27 with the first and the second sealing flanges 41 and 42 is sealed on the inner side 16 (see result visualized in FIG Fig. 4 and 5 ). In this case, the first hook-and-loop region 40 is oriented transversely to the longitudinal direction, the first sealing flange 41 being offset parallel to it in the direction of the head region 5 and the second sealing flange 42 being offset parallel thereto in the direction of the foot region 7.

The second closure element 28 is sealed to the sealing tab 17 with the third and fourth sealing flanges 45 and 46. The closing tab 17 is fixed by covering the two Velcro areas 40 and 44 at its scheduled position covering the opening portion 11 from the inside 16 ago, wherein the two Velcro areas 40 and 44 are positioned congruent to each other and engaged. The second Velcro area 44 is thereby oriented transversely to the longitudinal direction, the third sealing flange 45 being offset parallel thereto in the direction of the head area 5 and the fourth sealing flange 46 being offset parallel thereto in the direction of the foot area 7.

The length of the closing flap 17, measured in the longitudinal direction, is dimensioned such that it reaches approximately half of the top-seal width HSW (see FIG Fig. 5 ).

The first sealing flange 41 and the third sealing flange 45 are offset offset from the opening region 11 in the direction of the foot region 7 at a distance of a few millimeters.

In a further method, said folding of the film 2 is now carried out along the punctuated marking line M9, M10, M11, wherein the closing flap 17 is wrapped at its second and third edge zones 33 and 34 between regions of the inner side 16. Thereafter, the first and the second longitudinal sealing seam 35 and 36 are generated in this area by heat, wherein at the same time a sealing of the second and third Edge zone 33 and 34 in the respective longitudinal sealing seam 35 and 36 takes place (see result visualized in FIGS. 2 and 3 ).

After sealing measures have been completed in the longitudinal direction, the foot seal seam 8 is produced and the prefabricated bag 1, closed at the foot, is delivered to a bottler of packaged goods for filling. There, after being filled with packaged goods, the top seal seam 6 is produced by compressing the head region 5 and the action of heat, at the same time sealing the first edge zone 32 into the top seal seam 6, as described in US Pat Fig. 3 is shown.

The bag 1 thus produced allows the positioning of the chute 24 in the immediate vicinity of the continuously sealed top seal 6, as shown in FIG Fig. 6 is shown. There is an open chute 24 can be seen, which was opened by tightening on the handle portion 14. Initially, the film of the first gusset 9 along the laser perforation of the opening portion 11 was torn open. After complete removal of the film 2 from the opening portion 11 and further tightening on the handle portion 14, the opening 23 is obtained.

In the interior of the bag 1 separate the two Velcro areas 40 and 44 from each other in the course of opening the chute 24, because the first Velcro strip 39 is pulled out of the plane by means of the actuating means 13, whereas where the second Velcro strip 43 is held substantially in position is because it is attached to the Verschließlasche 17 which is sealed along its second and third edge portion 33 and 34 in the longitudinal sealing seams 35 and 36 and is immovably mounted there relative to the longitudinal sealing seams 35 and 36 and at the same time at its first edge portion 32 in the top seal 6 is sealed and stored there is immovable. Characterized the Verschließlasche 17 is formed in the form of a projecting into the interior of the bag 1 wedge structure anchored in the top seal 6 and connected to the longitudinal sealing seams 35 and 36 outwardly between the front and the rear wall 3, 4 clamped outwardly folded out the closure flap 17 in the direction of the opening chute 24 reliably prevented. In the fully open chute 24 is also a part of the second Velcro tape 43 can be seen.

Unlike the one in the Fig. 1 1, the bag 1 shown in FIG. 10 has a flat foot region 7. In the thus formed foot region 7, the lower ends of the gussets are inward placed and the Fußsiegelnaht 8 is folded over and fixed by adhesive on the outside 10. Such a foot area is flat. In the bag 1 shown here, the edge 18 of the closing tab 17 extends into the two longitudinal sealing seams 35 and 36 and also into the top seal 6. The bag 1 described here is prefabricated open on the head side, delivered to a bottler, filled there with packaged goods and there closed after its filling by the top seal 6, so that the first edge zone 32 in the top seal 6, the second edge zone 33 is sealed in the first longitudinal seam 35 and the third edge zone 34 in the second longitudinal seam 36.

Finally, it is pointed out once again that the figures described above in detail are only an exemplary embodiment which can be modified by the person skilled in the art in various ways without departing from the scope of the invention. For the sake of completeness, it is also pointed out that the use of indefinite articles does not exclude "a" or "one", that the characteristics in question can also be present multiple times. Also, individually disclosed features may be combined with other features and proportions of the illustrated features may be varied without departing from the concept of the invention, the following claims defining the scope of the invention.

LIST OF REFERENCE NUMBERS

1

bag

2

foil

3

front wall

4

rear wall

5

head area

6

Top sealing seam

7

footer

8th

Fußsiegelnaht

9

first gusset

10

outside

11

opening area

12

reseal

13

actuating means

14

grip area

15

fastening area

16

inside

17

closing flap

18

edge

19

contiguous area

20

closing part

21

first Velcro tape

22

second Velcro tape

23

opening

24

Schütte

25

first fold line

26

second gusset

27

first closure element

28

second closure element

29

second fold line

30

arrow

31

right edge of film

32

first edge zone

33

second edge zone

34

third border zone

35

first longitudinal seam

36

second longitudinal seam

37

third longitudinal seam

38

fourth longitudinal seam

39

first Velcro tape

40

first velcro area

41

first sealing flange

42

second sealing flange

43

second Velcro tape

44

second velcro area

45

third sealing flange

46

fourth sealing flange

47

left edge of film

A

detail section

LSW

Longitudinal sealing seam width

DG

Gusset depth

HSW

Top sealing seam width

Wed.

marking lines

Claims (14)

1. A bag (1) manufactured from a film (2) comprising an outside (10) and a sealable inside (16), and a front wall (3) and a rear wall (4) and a top region (5) and a bottom region (7) as well as at least one side fold (9) extending in longitudinal direction between the top region (5) and the bottom region (7), wherein the side fold (9):

   - is limited by a first longitudinal sealing seam (35) in direction of the front wall (3) and by a second longitudinal sealing seam (36) in direction of the rear wall (4), and

   - comprises an opening area (11) and

   - a reclosure (12) attached to the inside (16), wherein the reclosure (12) comprises a closing strap (17) covering the opening area (11) as well as adjacent edge areas, wherein the closing strap (17) comprises a width adapted to match the width of the side fold (9) and is fixed along its edge (18) comprising a first edge zone (32) and, adjoining thereto in longitudinal direction, second and third edge zones (33, 34), while leaving out a contiguous area (19) between the second and third edge zones (33, 34), in which a closure part (20) is arranged, to the inside (16) by the second edge zone (33) sealed into the first longitudinal sealing seam (35) and by the third edge zone (34) sealed into the second longitudinal sealing seam (36).
2. The bag according to claim 1, wherein the first and second longitudinal sealing seams (35, 36) comprise a longitudinal sealing seam width (LSW), and the second edge zone (33) is sealed into the first longitudinal sealing seam (35) along the full longitudinal sealing seam width (LSW) or along a part of the longitudinal sealing seam width (LSW), and the third edge zone (34) is sealed into the second longitudinal sealing seam (36) along the full longitudinal sealing seam width (LSW) or along a part of the longitudinal sealing seam width (LSW).
3. The bag according to one of the preceding claims, wherein the top region (5) is closed by a top sealing seam (6) and the first edge zone (32) is sealed into the top sealing seam (26).
4. The bag according to claim 3, wherein the top sealing seam (6) comprises a top sealing seam width (HSW) and the first edge zone (32) is sealed into the top sealing seam (6) along the full top sealing seam width (HSW) or along a part of the top sealing seam width (HSW).
5. The bag (1) according to claim 3 or 4, wherein the opening area (11) is arranged directly adjacent to the top sealing seam (6).
6. The bag (1) according to one of the preceding claims, wherein the closure part (20) extends from the first longitudinal sealing seam (35) to the second longitudinal sealing seam (36).
7. The bag (1) according to one of the preceding claims, wherein the closure part (20) comprises a first closure element (27) fixed to the inside (16) of the side fold (9) and a second closure element (28) fixed to the closing strap (17) and cooperating therewith, and the first and second closure elements (27, 28) are arranged directly adjacent to the opening area (11) or at a distance to the opening area (11) in direction of the bottom area (7), wherein the first closure element (27) is fixed to the inside (16) and the second closure element (28) is fixed to that side of the closing strap (17) which faces the inside (16).
8. The bag (1) according to claim 7, wherein the first closure element (27) comprises a first velcro fastener (39) with a first velcro area (40) limited on the one hand by a first sealing flange (41) positioned facing the top region (5) and on the other hand by a seond sealing flange (42) positioned facing the bottom region (7), and wherein the second closure elemennt (28) comprises a second velcro fastener (43) with a second velcro area (44) limited on the one hand by a third sealing flange (45) positioned facing the top region (5) and on the other hand by a fourth sealing flange (46) positioned facing the bottom region (7), and whereby the third sealing flange (45) is localised directly adjacent to the opening area (11) or is localised at a distance to the opening area (11) in direction of the bottom area (7) and sealed with the closing strap (17).
9. A method for manufacturing a bag (1) from a film (2), comprising a side determined to be the outside (10) and a side determined to be the sealable inside (16) of the bag (1), wherein the bag (1) comprises a front wall (3) and a rear wall (4) and a top region (5) and a bottom region (7) as well as at least one side fold (9) extending in longitudinal direction between the top region (5) and the bottom region (7), wherein the side fold (9) is limited by a first longitudinal sealing seam (35) in direction of the front wall (3) and by a second longitudinal sealing seam (36) in direction of the rear wall (4), wherein the method comprises the following steps:

   - feeding the film (2), and

   - defining an opening region (11) within an area of the film (2) provided for forming the side fold ( 9 ) , and

   - positioning a closing strap (17) for the purpose of forming a reclosure (12) within the area of the film (2) provided for forming the side fold (9) in such a way that the closing strap (17) covers the opening area (11) as well as edge areas adjacent thereto and can be fixed to the inside (16) along its edge (18) while leaving out a contiguous area (19) in which a closure part (20) is arranged, wherein the edge (18) comprises a first edge zone (32) and, adjoining thereto, second and third edge zones (33, 34), and the closing strap (17) comprises a width adapted to match the width of the side fold (9), so that the second edge zone (33) extends as far as an area of the film (2) provided for forming the first longitudinal sealing seam (35) and the third edge zone (34) extends as far as an area of the film (2) provided for forming the second longitudinal sealing seam (36), and

   - producing the first longitudinal sealing seam (35) with sealed-in second edge zone (33), and

   - producing the second longitudinal sealing seam (36) with sealed-in third edge zone (34).
10. The method according to claim 9, wherein the first and second longitudinal sealing seams (35, 36) comprise a longitudinal sealing seam width (LSW) and wherein the width of the closing strap is adapted to match the width of the side fold (9) such that the second edge zone (33) is sealed into the first longitudinal sealing seam (35) along the full longitudinal sealing seam width (LSW) or along a part of the longitudinal sealing seam width (LSW), and the third edge zone (34) is sealed into the second longitudinal sealing seam (36) along the full longitudinal sealing seam width (LSW) or along a part of the longitudinal sealing seam width (LSW).
11. The method according to one of claims 9 or 10, wherein positioning the closing strap (17) or adapting the length of the closing strap (17) is effected in such a way that the closing strap (17) with its first edge zone (32) facing the top region (5) of the bag (1) to be produced extends as far as an area of the film (2) provided for forming a top sealing seam (6) for the purpose of closing the top region (5), and wherein closing the top region (5) is effected by producing a top sealing seam (6) and sealing the first edge zone (32) into it.
12. The method according to claim 11, wherein the top sealing seam (6) to be produced comprises a top sealing seam width (HSW) and positioning the closing strap (17) or adapting the length of the closing strap (17) is effected in such a way that the first edge zone (32) is sealed into the top sealing seam (6) along the full top sealing seam width (HSW) or along a part of the top sealing seam width (HSW).
13. The method according to one of claims 11 or 12, wherein producing the top sealing seam (6) is effected after producing the first and second longitudinal sealing seams (35, 36).
14. The method according to one of the preceding claims 11 or 12, wherein the step of defining the opening area (11) comprises positioning the opening area (11) directly adjacent to that area of the film (2) which is provided for forming the top sealing seam (6).

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