EP3023356A1 - Side folding bag and method for producing the same - Google Patents

Abstract

The invention relates to a gusseted bag with two opposite front walls (1a, 1b), a first and a second gusset (2a, 2b), which extend opposite each other along a bag longitudinal direction (I) and each connect the two front walls (1a, 1b) with each other , Furthermore, a reclosing device with at least one reclosing strip (6) is provided, wherein the reclosing device is arranged in the region of the first gusset (2a), extends along a transverse direction (q) only over part of the width of the front walls (1a, 1b) and to fold out the first gusset (2a) to form a reclosable chute. According to the invention, a separate film section (11) is provided for forming a flat bottom, which is connected via heat sealing seams (12a, 12b) to lower ends of the front walls (1a, 1b) and the side folds (2a, 2b). The invention also provides a method for producing a gusseted bag. To publish with Fig. 2.

Description

The invention relates to a gusseted bag having two opposite front walls, a first and a second gusset, which extend opposite each other along a bag longitudinal direction and each connect the two front walls, a reclosing device having at least one reclosure strip, which is arranged in the region of the first gusset, extends along a bag transverse direction over a portion of the width of the front walls and allows the folding out of the first gusset to form a resealable chute.

The invention further relates to a method for producing a gusseted bag according to the preamble of claim 10.

The gusseted bag is usually formed from plastic film, wherein in particular multilayer laminated films for the production come into consideration, in which case the films on an inside of the gusseted bag have a heat-sealable inner layer and an outer surface of the side gusseted bag forming outer layer, wherein in a laminated film and an internal Overprint may be provided, which is produced before laminating.

According to the invention, one of the two lateral folds is provided with the reclosing device with which the gusset can be fixed and closed in a folded state between the front walls, wherein the gusset can be folded outwardly by opening the reclosing device to form a chute. Usually, above the reclosing device in a filled gusseted bag is an in Provided transversely extending head seal seam, which must first be partially demolished, cut or peeled for a first opening with a corresponding head section.

Generic gusseted bags are made EP 1 620 321 B1 . EP 1 948 527 B1 . EP 2 032 454 B1 and EP 2 148 820 B1 known.

Known from this prior art gusseted bags have a reclosure with a single self-locking reclosure strip on the inside of the bag at a gusset and adjacent the gusset also extends to the two front walls and which connects the gusset with the two front walls. Starting from a center line of the gusset one wing, so one half of the corresponding gusset with the first front wall and the other half of the gusset is connected to the second front wall.

The length of the reclosure strip on the two front walls can be different according to the prior art as well as in the context of the invention. In particular, the reclosing strip on the front walls can also extend beyond the corresponding gusset, so that then adjacent to the gusset, the two front walls are directly connected to each other, whereby a larger discharge opening is provided. However, it is always envisaged that the reclosure extends only over part of the entire width of the front walls. Expediently, a connection line extending in the longitudinal direction of the bag or in the transverse direction of the bag, in particular a heat-sealing seam, can be provided laterally to the reclosing strip in order to delimit the opening.

For the production of gusseted bags, various methods are known in practice. The generic gusseted bag with a reclosing device on only one gusset and the associated portions of the front walls is formed by folding from a single sheet of film. The self-locking reclosable strip is placed on the flat material web, in which case one of the gussets is formed in the region of the reclosure strip. From a gusseted tube with the front walls and the side gusses individual gusseted bags or corresponding blanks are then separated, each having a reclosing device.

Because the direction of production of the web or gusseted tube is the same as the longitudinal direction of the gussets, the corresponding methods are also referred to as "longitudinal methods".

Individual gusseted pouches are then separated from the gusseted tubing, wherein a filling can take place directly in this case, which is then a so-called FFS process (Form Fill and Seal). Alternatively, prefabricated gusseted bags can first be formed which are not yet closed on at least one side and can then initially be stored and transported to a packaging location. Such gusseted bags are then filled separately and sealed.

From practice, alternative manufacturing methods are known in which the front walls and the gussets are formed from separate film sections. That's how it describes EP 1 541 332 A1 a method for the production of film packaging bags, in which a bag string is formed such that successive foil packaging bags are arranged side by side with their bag longitudinal edges. The production direction is the same a bag transverse direction of the individual bags, which is why such a method is also referred to as "cross-method" or as "Totani method".

According to EP 1 541 332 A1 First, a bag string of successive, connected bag blanks is formed. A first film web is guided in the production direction. Thereafter, a film strip is fed, wherein the edges of the film strip are folded over on a central portion. The edges are usually the same width, with a gap remaining between the edges after folding. Subsequently, pieces of film strips are applied at a uniform distance transversely to the production direction (ie along the bag longitudinal direction) on the first film web before a second film web is fed in the production direction, with which the first film web and the pieces of film strips are covered. Then longitudinal sealing seams are produced transversely to the direction of production, with which the film strips are welded on the one hand at the folded edges with the second film web and on the other hand on an opposite side with the first film web. From the thus formed bag strand, individual foil packaging bags are finally separated by a cut in the region of the foil strips in such a way that two side folds of successive side fold bags are formed from a folded foil strip. In addition to the gussets, a separate bottom fold can be produced as a flat bottom.

In such a transverse method, it is readily possible to perform the gussets shorter than the two front walls, so that a continuous reclosure can be arranged above the gussets, which connects only the two front walls together. The arrangement of a reclosure in the area of one of the gussets, with which the corresponding gusset can be folded out as a chute is with However, the transverse method described inappropriate because the formation of the two front walls and the gussets separate pieces of film supplied and subsequently connected, in which case the integration of a reclosure on one of the gussets and the associated sections of the front walls by conventional technical means is not possible.

In order to produce a bottom in the generic gusseted bags with a reclosure on a gusset, a lower edge of the gusseted bag can be closed with a transverse seal, but then a uniform placement of the gusseted bag is not possible. Rather, such a gusseted bag tends during filling, its transport and its storage to a tilt when it is to be placed on its lower portion as a floor.

To reduce this tendency to tilt, it is known to first seal a lower portion of the gusseted bag with a transverse seam and then fold it onto itself, thereby forming a type of reinforced double-walled bottom. However, this procedure is disadvantageous insofar as it requires a further work step for the folding over, whereby an increased material requirement also results from the folding of the lower section on itself. Finally, the folding of the end portion in one direction leaves a certain asymmetry, so that an inclination can not be completely avoided. The additional generation of Eckabsiegelungen or the like can not completely solve the problem described.

Against this background, the invention has for its object to provide a gusseted bag with a reclosure on a fold-out side gusset, which has an improved stability. Of Furthermore, a method for producing such a gusseted bag should also be specified.

The object of the invention and solution of the problem are a gusseted bag according to claim 1 and a method for producing a gusseted bag according to claim 10.

Starting from a generic gusseted bag with a reclosing strip having at least one reclosable strip, which is arranged in the region of the first gusset, the invention provides that a separate film section is provided for forming a flat bottom, which is connected via connecting seams with lower ends of the front walls and the side gussets ,

By providing a reclosure at a gusset to form a fold-out chute on the one hand and a flat bottom in the form of a separate film section on the other hand, particularly advantageous measures are combined according to the invention, which could be realized according to the prior art only in different bag-making process and thus could not be combined.

Accordingly, the invention also relates to a method for producing a gusseted bag according to claim 10, wherein a web of material is supplied to a bag film in a production direction, wherein folded gusset tube with a first front wall, a second front wall and arranged therebetween, forming the front walls gussets formed by folding the bag film is, and being separated from the gusseted tube, preferably unfilled gusseted bag.

Starting from such a longitudinal method is inventively provided that in the bag film for each gusseted bag, preferably before folding, a transversely extending incision is made such that extends the incision in the gusseted tube over both gussets and the first front wall, which is arranged between the gussets, wherein in the gusseted tube separated by the incision first front wall on one side of the incision, ie seen in the production direction before or after the incision, raised and at least partially folded, whereby the underlying second front wall and the side fold exposed in sections and wherein, to form a flat bottom, a separate film section is connected via connecting seams, in particular heat-sealing seams, to the folded-over section of the first front wall and the uncovered side folds and the second front wall.

Based on a known longitudinal method so that a further development is indicated, with which for each gusseted bag and a separate film section can be attached as a flat bottom.

The gusseted bag according to the invention is characterized by a particularly advantageous handling. With the aid of the reclosing device on the first gusset, it can be fixed in a folded state after a first opening, in which case the two wings of the first lateral gusset are respectively fastened to one of the two front walls. By loosening the reclosure then the gusset can be folded outwards to form a chute, so that then a particularly easy and accurate dosage is possible. In particular, the gusseted bag can be emptied controlled by an inclination by a user, wherein just a precise removal of subsets is possible, in which case the remaining contents is protected by the reclosing device.

With regard to the arrangement and design of the reclosing device can on the known from the prior art embodiments, in particular to embodiments according to EP 1 620 321 B1 . EP 1 948 527 B1 . EP 2 032 454 B1 and EP 2 148 820 B1 be resorted to.

The gusseted bag may for example have a filling volume between 1 l and 50 l, in particular between 2 l and 30 l. The gusseted bag is particularly suitable for receiving bulk materials such as pelleted pet food, detergent, cat litter, road salt and powdery or granular construction materials.

In order to ensure a reliable closure, a top seal seam is usually provided above the reclosing device prior to initial opening, which seals the side gusset bag tightly. For initial opening, at least a portion of the bag head formed by a top seal is then torn off to expose the underlying recloser and allow the chute to fold out and reclosure.

The reclosing device comprises at least one reclosing strip, which preferably runs exactly in the transverse direction of the bag. In principle, it is possible for the reclosing device to have a plurality of separate reclosing strips which can be locked together. According to a preferred embodiment of the invention, however, it is provided that the reclosing device has a single, continuous and self-locking reclosable strip. Such a reclosure strip can be particularly easily placed on a flat web of material during manufacture, which is then arranged only by folding this Wiederverschlussstreifen in the desired position on the gusset.

With regard to the specific embodiment of the reclosure strip, different possibilities arise within the scope of the invention. Even if a reclosing strip on the basis of adhesive is not excluded, preferably a mechanical locking takes place. To achieve a mechanical interlock, the reclosing strip may have either continuous closure formations or a plurality of individual interlockable closure elements. For example, grooves, protrusions and hook-shaped curved strips which can be locked together or with themselves can be considered as continuous closure molding. Corresponding structures can be extruded, for example, as a strand, wherein the closure formations are usually arranged on a heat-sealable support section or extruded in one piece with the heat-sealable support section.

Individual, lockable closure elements can be provided for example in the form of Velcro hooks, mushroom heads or the like. In the case of individual closure elements which can be locked together, there is the advantage that secure locking is possible even with a vertical offset. The individual mushroom heads or Velcro hooks are usually so mobile that they can penetrate at a pressure from the outside in an associated space and then lock there with similar closure elements. In the case of individual locking elements which can be locked together, there is also the advantage that, although contaminants locally connect avoid the entire reclosure strip but can not be easily raised from the pollution.

According to a preferred embodiment of the invention, the front walls and the side folds are formed from a bag film, in particular a uniform bag film, wherein the front walls and the side folds can be folded from a uniform material web as described above. The bag film usually has at least one heat-sealable inner layer and one outer layer, wherein the assignment of the inner layer and the outer layer relates to the arrangement of the bag film on the side-folding bag. The inner layer thus forms the inner surface of the gusseted bag, while the outer layer forms the outer surface.

The inner layer is expediently well heat-sealable in order to close the pouch on the circumference, to be able to form longitudinal and transverse sealing seams and also to be able to fasten further devices such as the reclosing device by heat sealing. In addition to polyolefins such as polyethylene (PE) and polypropylene (PP) and polyolefin copolymers, biodegradable plastics such as polylactic acid (PLA), polybutylene adipate terephthalate (PBAT) and polybutylene succinate (PBS) are also suitable as the heat-sealable material for the inner layer.

The outer layer is less heat sealable compared to the inner layer, for which the outer layer may have a higher melting or softening temperature. In the case of a heat-sealing of the bag film, it is then achieved that, although the inner layer is melted through the outer layer if necessary, without the outer layer being excessively deformed or losing its structure. The outer layer may in particular be formed from polyester. A reduction in the tendency to melt Furthermore, heat-sealing can also be achieved by orientation of the outer layer. For the outer layer therefore also oriented polyethylene terephthalate (OPET), oriented polyamide (OPA), oriented polypropylene (OPP) and oriented polylactic acid (OPLA) come into consideration. In addition, the outer layer may also be formed by a cellulose film.

According to a preferred embodiment of the invention, a laminating film is used as the bag film, wherein a first film with the inner layer and at least one second film with the outer layer are bonded together by adhesive. Suitable, for example, is a two-component adhesive based on polyurethane (2K-PUR). Finally, other intermediate layers may be provided, for example to increase the barrier effect. As a barrier, for example, a film layer of ethylene-vinyl alcohol copolymer (EVOH) may be provided a thin metal foil or a metallized film layer.

In the case of a laminated film, an internal printing is preferably also provided, which is applied to one of the joining surfaces of the films to be joined together before laminating.

As already explained above, the gusseted bag is expediently produced in a longitudinal method, wherein a material web of the bag film is first converted into a gusseted tube, from which individual side gusset bags are then separated.

Accordingly, it is provided according to a preferred embodiment of the invention that at least a part of the side edges formed between the side folds and front walls are formed as folded edges. To be at the Production of the gusseted hose to close the circumference, it is expediently a longitudinal seal. This can coincide with one of the side edges, so that then this side edge is not formed as a folding edge. In addition, the edges of the material web can also be connected to one of the front surfaces by a longitudinal seam.

Even if at least a part of the side edges are formed as folded edges, the production of longitudinal sealing seams at the side edges may be expedient in order to increase the dimensional stability and dimensional stability of the gusseted bag. After forming longitudinal sutures, an outer edge may also be cut to improve the appearance.

An upper edge of the bag above the reclosing device is usually closed by a transverse sealing seam. In the context of such an embodiment, it is preferably provided that the side folds extend over the entire side gusseted bag from the flat bottom to the transverse seam at the upper edge of the bag, that is to say in the longitudinal direction of the bag. Further measures to shorten the gusset are then not necessary.

Particularly in the case of a large filling volume and / or a large filling weight, the gusseted bag can be provided with a carrying handle. The carrying handle can be like from the EP 2 032 454 B1 be stamped on the bag head in a sealed area. According to a preferred embodiment of the invention, however, the second gusset on a carrying handle, which then faces the reclosing device. Suitable embodiments of carrying handles are made EP 2 148 820 B1 known. While the reclosing means is conveniently located near an upper end of the gusseted bag, the carrying handle may be approximately centered or slightly offset with respect to the bag longitudinal direction in the direction of the flat bottom the gusseted bag may be staggered, whereby then the weight of the gusseted bag can be easily controlled even when dumping.

The flat bottom provided according to the invention by a separate film section usually has a heat-sealable inner layer and an outer layer, as described above, wherein the flat bottom can also be formed from the previously described bag film. The flat bottom usually has a rectangular shape, wherein the length and width of the film section corresponds to the width of the front walls and the width of the side folds.

Through the flat bottom of the gusseted bag can be placed straight. This is advantageous both in the filling, transport, storage and handling of the gusseted bag. In contrast to a merely turned over hose section to form a stand, in addition to the improved handling, there is even a saving of material, because several film layers do not have to be arranged one above the other.

In the method according to the invention, starting from a longitudinal method, a modification is provided in which incisions are produced which cut through a first front wall formed from the material web and the side folds adjoining it in the transverse direction for each film bag. The incisions may conveniently be formed in the still flat web of material, but then in the folding then tearing must be prevented and the web is to be guided with appropriate care. In principle, it would also be conceivable to provide only a weakening line or perforation on the material web, which is then subsequently separated further.

According to a preferred embodiment of the method it is provided that are arranged on the web at a uniform distance and at a uniform distance to the incisions transverse to the direction of production reclosing strip, which after forming the gusseted tube at one of the gussets and each over a part extend the two front walls, which is then formed in the context of the method according to the invention, the gusseted bag described above with a reclosure at the first gusset. The reclosure strip expediently extends at the front walls at least over a width which corresponds to half the width of the associated gusset. In such an embodiment, only a connection of the two wings of the gusset with one of the front walls takes place. If the reclosure is carried out beyond the gusset area, the two front walls can also be connected directly to each other in certain areas.

At least, however, the reclosure strip extends in all cases only over part of the front walls.

In a further aspect, the method can also be used to attach carrying handles which are expediently arranged on the side fold which lies opposite the reclosable strip.

Usually, for each bag exactly one carrying handle and exactly one reclosure strip attached. While the reclosure strips are attached to the inner layer of the bag film, the carrying handle must also be accessible from the outside. Various suitable handle constellations are from the EP 2 148 820 B1 known.

In order to close the gusseted tube on the circumferential side, a heat-sealing seam may be provided, wherein such a heat-sealing seam is preferably formed in the region of one of the side edges. In principle, all side edges can be provided with a heat-sealing seam in order to improve the stability of the side gusset bags that are formed. If the material web is welded at one side edge to a circumferentially closed tube, supernatants can also be provided there, which are trimmed, that is cut off.

The first front wall is preferably folded over at a fold line spaced from the incision in such a way that the distance of the fold line from the incision corresponds approximately to half the width of the side fold. The front wall is then folded as far as possible, whereby the exposed gusset, starting from a central crease line at an oblique angle of 45 ° to the outside.

The separate sheet section for forming a flat bottom for each gusseted bag is conveniently attached to the front panels and gussets with heat seal sutures. The sealing at the gussets can be done easily on the flattened gusseted tube. The same applies to the connection of the separate film section with the exposed second front wall. In order to avoid an undesired sealing when connecting the separate film section with the folded-up edge of the first front wall within the gusseted tube, the corresponding generation of a transverse sealing seam is preferably carried out in the raised state.

Fig. 1

einen erfindungsgemäßen Seitenfaltenbeutel im befüllten Zustand in einer perspektivischen Ansicht,

Fig. 2

den Seitenfaltenbeutel gemäß der Fig. 1 in einem unbefüllten, flachgelegten Zustand,

Fig. 3a bis 3f

Verfahrensschritte zur Herstellung des in Fig. 1 und Fig. 2 dargestellten Seitenfaltenbeutels.

The invention will be explained in the following with reference to a drawing showing only one exemplary embodiment. Show it:

Fig. 1

a gusseted bag according to the invention in the filled state in a perspective view,

Fig. 2

the gusseted bag according to Fig. 1 in an unfilled, flattened state,

Fig. 3a to 3f

Process steps for the preparation of in Fig. 1 and Fig. 2 illustrated gusseted bag.

The Fig. 1 shows a gusseted bag according to the invention with two opposite front walls 1a, 1b, a first gusset 2a and a second gusset 2b, wherein the gussets 2a, 2b extend opposite each other along a bag longitudinal direction l and each connect the two front walls 1a, 1b together.

While the Fig. 1 shows a filled and sealed in a transverse direction of the bag q by a head seal 3 side gusseted bag shows Fig. 2 a gusseted bag provided as a pre-made bag in a laid-flat condition for subsequent filling. To start from the Fig. 2 to the filled bag according to the Fig. 1 to arrive, the prefabricated, flattened bag is filled at the top initially not yet closed edge and closed by the head seal 3. The side edges between the front walls 1a, 1b and the side folds 2a, 2b are reinforced by longitudinal sealing seams 4.

From the Fig. 1 and 2 As a result, the bag has a reclosing device with a reclosing strip 6. The reclosing strip 6 is arranged in the region of the first side fold 2a and extends over the two wings of the first side fold 2a inserted between the front walls 1a, 1b and along the front walls 1a, 1b. In the illustrated embodiment, the reclosure strip 6 extends on the front walls 1a, 1b beyond the first gusset 2a, so that there in a region adjacent to the first gusset 2a region, the two front walls 1a, 1b can be directly connected to each other. In contrast, in the area of the first gusset 2a, the two wings of the corresponding gusset 2a are connected to one of the two front walls 1a and 1b, respectively.

In order to open the gusseted bag for the first time, a weakening line 7 is arranged above the reclosure strip 6, with which a corner section 8 above the reclosure strip 6 can be separated. The weakening line 7 can be formed for example by a punching, a perforation or a laser, wherein the various measures can also be combined. For crack initiation also a notch 9 is provided.

In order to allow a sufficient closure of the gusseted bag after a first opening, a transverse seam 10 is formed adjacent to the reclosure strip 6, which extends from the end of the reclosure strip 6 to the opposite edge of the bag.

After a first opening, the first gusset 2a can be opened by opening the reclosing device formed by the reclosing strip 6 with the formation of a chute folded outwards and again inserted between the two front walls 1 a, 1 b for a new closure.

According to the invention, the gusseted bag has a flat bottom which is formed by a separate film section 11. The film portion 11 is connected to the lower edges of the front walls 1a, 1b and the side gussets 2a, 2b by heat sealing seams 12a, 12b. While the flat bottom during filling, transport, storage and handling is particularly advantageous and allows a safe installation of the side gusseted bag, the contents can be easily removed with the reclosing device, in particular, the removal of subsets by the formation of a chute exactly possible is.

Depending on the filling weight of the gusseted bag can also be equipped with a carrying handle, not shown, which is suitably arranged on the second side fold 2b, which is opposite to the reclosing device.

The reclosing strip 6 may comprise continuous closure formations in the form of grooves or projections or also a multiplicity of individual closure elements which can be locked together, wherein such individual closure elements which can be locked together may for example have the form of mushroom heads or hooked hooks.

A preferred method for the preparation of in the Fig. 1 and 2 shown gusseted bag is in the Fig. 3a to 3f shown.

In the method, a material web of a bag film 13 is fed in a production direction p, which in its orientation of the bag longitudinal direction I. equivalent. The corresponding method is therefore also referred to as a longitudinal method.

In a conventional manner is according to the Fig. 3a by folding the bag film 13, a gusseted tube 14 is formed, which has a first front wall 1a, a second front wall 1b and two side folds 2a, 2b connecting the front walls 1a, 1b. According to the Fig. 3a the crease lines are already indicated.

Outer edges 15 of the bag film 13 are provided as a projection and are separated after the formation of the gusseted tube 14.

According to the Fig. 3a For example, in the bag film 13, for each gusseted bag prior to folding, a transverse incision 16 is made such that the incision 16 in the subsequently formed gusseted tube 14 extends over the two gussets 2a, 2b and the first front wall 1a which extends between the gussets 2a, 2b is arranged. As will be explained in detail below, the individual gusset bags are separated from the gusseted tube 14 in the region of the incisions 16, wherein the incision 16 is provided for the formation of a flat bottom.

The bag film 13 is at least two-layered and comprises a heat-sealable inner layer of polyolefin, in particular polyethylene and an outer layer of polyester, in particular PET. The film section 11 may be formed of a same or similar material with a corresponding layer structure. The heat-sealable inner layer is according to Fig. 3a at the flat-fed bag film 13 initially free, so that there for each gusseted bag extending in the transverse direction reclosing strip. 6 can be sealed. Adjacent to the reclosing strip 6, the weakening line 7 is also already produced in the flat bag film 13, with which the upper corner section 8 for exposing the reclosable strip 6 during a first opening can subsequently be separated in the finished side pleated bag.

Since the sipes 16 extend over the first front wall 1a and both side gussets 2a, 2b, the first front wall 1a can be raised, for which purpose, for example, grippers or vacuum cups can be used.

In the Fig. 3a is further indicated also that in the formation of the gusseted tube 14 also longitudinal sealing seams 4 can be generated. If, at the incisions 16, the overhead first front wall 1 a is partially folded over, the two side folds 2 a, 2 b and the second front wall 1 b are partially exposed underneath (see FIG Fig. 3b ), whereby then there the side folds 2a, 2b, starting from a bend line 17 at an angle of 45 ° to the outside. On the so folded along the fold line 17 foot area a separate film section 11 is placed, which according to the Fig. 3b in particular can be supplied laterally.

According to the Fig. 3c this separate film section 11 is connected to the unfolded gussets with heat sealing seams 12b, wherein this heat sealing can be done with a flat gusseted hose 14.

In order to avoid the undesired production of a heat-sealing seam within the side gusset tube 14 when connecting the separate film section 11 to the first front wall 1a, it is possible according to FIG Fig. 3d be provided that the folded portion of the first front wall 1a is erected and then connected in the erected state along a heat-sealed seam 12a to the separate film section 11 ( Fig. 3e ).

However, the connection of the separate film section 11 with the second front wall 1b can be done without problems beforehand or else subsequently. Exemplarily shows the Fig. 3f the production of this second heat-sealing seam 12a immediately before separation of the individual gusseted bags. Both heat-sealed seams 12a can also be formed together when the separate film section 11 is folded back in again ( Fig. 3d ), because then the connections of the separate film section 11 to the first front wall 1a and the second front wall 1b at the lower edge of the bag are superimposed.

Claims (16)

Side gusseted bag with two opposite front walls (1a, 1b), a first and a second gusset (2a, 2b), which extend on opposite each other along a bag longitudinal direction (I) and each connect the two front walls (1a, 1b) with each other , a reclosing device having at least one reclosing strip (6), which is arranged in the region of the first gusset (2a), extends along a transverse direction (q) only over part of the width of the front walls (1a, 1b) and folds out first side fold (2a) for forming a resealable chute, characterized in that a separate sheet section (11) is provided for forming a flat bottom, which has heat sealing seams (12a, 12b) with lower ends of the front walls (1 a, 1 b) and the gussets (2a, 2b) is connected. Side gusset bag according to claim 1, characterized in that the reclosing strip (6) has either continuous closure formations or a multiplicity of individual closure elements which can be locked together. Side gusset bag according to claim 1 or 2, characterized in that the resealing device comprises a single, continuous and self-locking reclosable strip (6). Side gusseted bag according to one of claims 1 to 3, characterized in that the front walls (1a, 1b) and the side gussets (2a, 2b) are formed from a bag film (13). Side gusseted bag according to claim 4, characterized in that the bag film (13) comprises a heat-sealable inner layer of polyolefin and an outer layer of polyester. Side gusseted bag according to one of claims 1 to 5, characterized in that at least a part of between the gussets (2a, 2b) and front walls (1a, 1b) formed side edges are formed as folding edges. Side gusseted bag according to one of claims 1 to 6, characterized in that an upper edge of the bag above the reclosing device is closed by a top seal seam (3). Side gusseted bag according to claim 7, characterized in that the gussets (2a, 2b) extend from the flat bottom to the top seam (3) at the upper edge of the bag. Side gusseted bag according to one of claims 1 to 8, characterized in that at the second side fold (2b) a carrying handle is arranged. Method for producing a gusseted bag,
wherein a material web is fed to a bag film (13) in a production direction (p),
wherein by folding the bag film (13) a gusseted tube (14) having a first front wall (1a), a second front wall (1b) and arranged therebetween, the front walls (1a, 1b) gussets (2a, 2b) is formed, and
wherein individual gusseted bags are separated from the gusseted tube (14),
characterized,
in that a transverse cut (16) is made in the bag film (13) for each gusset bag such that the gash (16) in the gusseted tube (14) extends over both gussets (2a, 2b) and the first front wall (1a ), which is arranged between the gussets,
that in the gusseted tube (14) through the incision (16) cut-away front first wall (1a) is raised on one side of the incision (16) and at least partially folded down, whereby the underlying second front wall (1b) and the side gussets (2a, 2b ) are exposed in sections and
in that, to form a flat bottom, a separate film section (11) is connected via connecting seams to the folded-over section of the first front wall (1a) and the exposed side folds (2a, 2b) and the second front wall (1b). A method according to claim 10, characterized in that on the material web at a uniform distance transversely to the direction of production (p) extending Wiederverschlussstreifen (6) are arranged, which after forming the gusseted tube (14) on one of the gussets (2a, 2b) and each extend over a part of the two front walls (1a, 1 b). A method according to claim 11, characterized in that in the gusseted tube (14) the reclosable strip (6) opposite gusset is provided with carrying handles. Method according to one of Claims 10 to 12, characterized in that the first front wall is folded over at a fold line spaced from the incision (16) such that the distance from the fold line to the incision (16) corresponds approximately to half the width of the side fold , Method according to one of claims 10 to 13, characterized in that the gusseted tube (14) is circumferentially closed by a heat-sealing seam. Method according to one of Claims 10 to 14, characterized in that longitudinal sealing seams (L) are produced at the fold edges formed between the front walls (1a, 1b) and the lateral folds (2a, 2b). Method according to one of claims 10 to 15, characterized in that the separate film section (11) on the front walls (1a, 1b) and the side folds (2a, 2b) by heat sealing seams (12a, 12b) is attached.

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