DE202014105515U1 - Stand-up pouches - Google Patents

Abstract

Stand-up pouches having a bottom respectively arranged at the lower end of a front wall (13) and a rear wall (14), which is formed by means of a bottom fold (4) which on the front side (13) with the front wall and on the back with the rear wall (14 ) via seams (1, 2, 7, 8, 9, 10), wherein a folded edge (3) of the bottom fold (4) in a filled state of the stand-up pouch from a first corner of the bottom to an oblique, in particular diametrically opposite , second corner of the floor, characterized in that the stand-up pouch has two side folds (15, 16).

Description

The invention relates to a stand-up bag, which has a bottom arranged at the lower end of a front and a rear wall. This floor is formed by means of a bottom fold which is connected on the front to the front wall and on the back to the rear wall via seams, wherein a folded edge of the bottom fold in a filled state of the floor bag from a first corner of the floor to an oblique, in particular diametrically opposite, second corner of the floor runs.

A floor or stand-up bag according to the preamble of claim 1 is for example in the US 4810109 , optionally in the DE 20 2013 103 978 U1 disclosed. The bottoms of these stand-up pouches have seams on the edge, which converge on the front and the back of lateral longitudinal seams of the base pouch and in the folded pouch position, forming a generally blunt angle in a corner of the bottom. Typically, the side edges of the floor are rectilinear and angularly contiguous. To form a substantially rectangular bottom, the seams have a different length. In addition, the front and the rear wall are provided with mutually mirror-inverted seams, so that when filling the bottom along the height of the bag upwardly extending longitudinal seams, for example, a plastic bag at the bottom end diametrically opposite and accordingly the other corners or Edges of the bottom are arranged on different sides with respect to the kink or fold edge of the bottom fold. The folding edge of the bottom fold runs correspondingly diametrically between the original longitudinal seams.

Although the illustrated prior art has a stable bottom, however, is due to this bottom upwards almost conical. On the one hand this is detrimental to the available useful volume, on the other hand it is unfavorable for a printing of the bag and the associated advertising function when the bag is presented on a shelf for sale purposes.

It is therefore an object of the present invention to form a stand-up pouch whose front side to be printed is less rounded and which is nevertheless made stable.

The object is achieved by an article according to claim 1 and by a method according to claim 12. Further advantageous embodiments of the invention are to be inferred from the claims dependent claims and the following description.

According to the invention, it is provided that the stand-up pouch has two side folds. This turns a nearly cone-shaped bag into a bag with a clearly defined front and high stability. As a result, wider film webs can be used at the same time resulting in bags with significantly greater useful volume.

If one of the gussets is part of a foil strip forming the front wall, while the other of the gussets is part of a foil strip forming the back wall, the manufacture of the self-supporting bag according to the invention is simplified despite the gussets with more complex bottom because the gussets do not need to be fed separately ,

Accordingly, it represents a solution of the above-described object, if preferably after production of two longitudinal and the bottom contour determining seams, preferably sealing seams, the gussets are generated by a mutually moving the front and the rear wall in the direction of their planar extent. Through this complicated shifting process, the integration of a gusset in the stand-up pouch is greatly simplified because it dispenses with complicated seam constructions in the floor area.

The production of the gussets by displacing the front wall and the rear wall relative to one another preferably in the direction of their areal extent can be achieved by gripping the already existing longitudinal seams which extend from the bottom of the upright bag in the direction of the head region and reducing the distance between the two. For example, the longitudinal seams can be moved toward one another or almost toward one another. Also, a mutually offset movement, in particular in the direction of the planar extension of the remaining front or rear wall can lead to the formation of gussets. Both longitudinal seams or instead the newly formed longitudinal edges of the gussets can be grasped and moved, alternatively only one of the longitudinal edges -bzw. - seams are taken and moved. Preferably, both the longitudinal seams present on both sides as well as the region of the newly forming longitudinal seam are grasped and the front and rear walls are moved against one another. Alternatively or additionally, the area adjoining the longitudinal seams can also be grasped. Thus, a contour is generated, the gussets from the existing for the front or rear wall (in particular film) material provides and through which when filling the Stand-up bag forms an advantageous, at least below the bag head cuboid shape.

In the area of the inner edge of the gusset this can already pretreated to support the bending movement, for example, be embossed.

The embossing can go into the area of the seam closing downwards and also form a preferential fold line there. In order to produce a good stackability of the stand-up pouch, the fold edge runs obliquely into the seam at an angle which adjoins the bottom in a downward direction.

Particularly advantageous is an embodiment of a stand-up pouch according to the invention, in which by a third and fourth diametrically opposite corner of the bottom connecting connecting line is present, which crosses the folding edge of the bottom and is shorter than this. This corresponds to a rectangular shape of the floor, in which the adjoining bottom edges or the seams forming them have different lengths. In combination with the present invention two side gussets in particular the longer edge of the floor can be used as a conclusion of a wide front wall, so that a well-designed front without the known from the prior art quasi cylinder or truncated conical structure for information reproduction is available ,

Advantageously, in the folded state and projected onto the plane of the flat extension of the stand-up pouch, that seam which forms a shorter side edge of the bottom is provided at a greater angle with the fold edge or fold than that seam which forms a longer side edge of the bottom. In particular, this is the seam that closes the side fold downwards. This leaves the larger areas free for front-side printing.

The gussets are preferably arranged at their lower end completely with respect to the folding edge on one side of the bottom fold, so that an introduction of the gussets is not complicated by the folding edge and also the folding and flattening of the bag for subsequent transport process can be performed more secure.

To improve the stability and a nearly rectangular configuration of the stand-up pouch, at least two, preferably four, of the outer longitudinal edges of the side folds running from the bottom to the upper end of the stand-up pouch are sealed.

The formation of the respective gusset at each of the shorter edge of a rectangular bottom and completely on one side of the Bodenfaltkante supports the introduction of this gusset and folding for the purpose of subsequent stacking. It is the entire length of the bottom side without further edges or sealed areas for kinking available, so that the introduction of the gusset, possibly with simultaneous forced penetration of the side gusset forming area, is facilitated. The inner edge or inner fold edge of the respective side fold is in this case preferably provided at a distance from one of the longitudinal edges of the side fold, which is smaller than half the length of one of the adjoining bottom side edge forming seam.

In particular, in the folded state of the stand-up pouch, the inner edge of the (respective) side gusset ends in a bend of the seam provided for forming a bottom edge or crosses it. Gusset and bottom go well together, the stackability is improved by the flatter contour of the folded bag.

Preferably, in the folded state of the stand-up pouch, a bottom edge of the stand-up pouch extends obliquely over the entire width of the pouch on the front side. Thus, a small pack size, at the same time a stiffening of the front area not only in width but also in height and thus better stacking can be achieved.

Preferably, a stand-up pouch according to the invention having walls which are at least substantially formed by a single-layer or multi-layer plastic, paper or plastic-paper composite film is produced. At least substantially includes that in addition to the actual film material of course still inks, sealable inner layers (areas), seams and possibly also adhesive, spout or zipper and other other functional elements may be present. Nevertheless, the planar extent of the bottom, the side, front and rear walls is formed by a preferably formed as a film material material made of plastic or a corresponding plastic-paper composite film.

Regardless of this, for barrier purposes, there may additionally be a further barrier layer, which may consist, for example, of an aluminum-coated plastic layer or an aluminum layer.

Further advantages and details of the invention can be found in the following Figure description take. In the pictures shows schematically:

1 an article according to the invention during the manufacturing process,

2 the object after 1 during a subsequent process step along the section II-II 1 without ground view,

3 the object after 2 after a subsequent process step

4 the object after 3 in a flattened variant,

5a C further embodiments of the invention.

Individual technical features of the embodiments described below can also be combined in combination with previously described embodiments as well as the features of the independent claims and any further claims to objects according to the invention. If appropriate, functionally equivalent elements are provided with identical reference numbers.

To form a stand-up pouch according to the invention, either a front or a back side foil along longitudinal seams 1 and 2 to be sealed. Alternatively, a tubular film can be used, which is sealed on the long sides. Sutures are understood above and below seams which causes by heat sealing, gluing or ultrasonic welding or equivalent methods, a connection of adjoining, adjacent film areas.

A dash-dotted line 3 indicates an internal folding edge of a likewise inner bottom fold 4 at. This can be created by folding the front or rear wall or by shooting a separate film. In a lower area 6 are the longitudinal seams 1 and 2 four-layered.

In the projection shown during the manufacturing process and in the view on the figure level according to 1 forms a seam forming a shorter side of the floor 7 , which runs on the front, with the seam 8th , which has an obtuse angle with the seam 7 with the folding edge 3 forms an obtuse triangle, a front side edge of the floor. Dashed and corresponding mirror-inverted seams 9 and 10 are seams that are present on the back wall of the stand-up pouch. The corner transitions of the seams 7 . 8th and 9 . 10 For example, divide the bottom edge of the film 1/3 to 2/3. When filling the stand-up bag, the sutures are pulled down 7 and 8th such as 9 and 10 formed soils forward and rearward out of the plane of the figure and then together form a sloping to the plane plane rectangular bottom with short sides 7 and 10 as well as longer edges 8th and 9 out.

Dash-dotted lines 11 represent creases, which represent the outer edges of the gussets to be formed after the production of the side folds of the stand-up pouch. In order to make the phase of the production of the gussets process-reliable, the bag can be pretreated along these lines, for example embossed. The same applies to dash-dotted lines 12 that correspond to the inside fold edges of the gussets.

While in the 2 illustrated characteristic displacement process in which a front wall 13 and a back wall 14 are shifted in the direction of the respective arrows F, G, gussets form 15 and 16 out. These are caused by kinking of the inner edges 12 ' adjacent areas against each other. The outer edges of the gussets are thus on the one hand by the seams 1 and 2 as well as along the lines 11 educated. Thanks to these lines can be used to manufacture the in 3 shown contour also again a seam 1' respectively. 2 ' to stiffen and define the respective gussets are generated ( 3 ).

By pushing together the gussets, in the end of a front and a rear wall 13 . 14 the gussets 15 . 16 be produced, resulting in a stacking of the stand-up bag for the purpose of transport to the processor in the 4 shown characteristic line or seam pattern in the floor area.

The sealed seam 8th is transverse across the entire width of the front. It thus stabilizes the lower bag area. Starting from the lower left end of the stand-up pouch in the figure, the side edge (seam 7 ) of the soil over a bend 20 towards the crossing point with the folded edge 3 the bottom fold 4 , At the right edge with longitudinal seam 2 then runs the then formed on the back of the stand-up pouch part of the bottom by means of a folded side seam 10 of the bottom toward the lower right corner, from the one on the back of the stand-up pouch the longer side seam 9 towards the longitudinal seam 1 runs. In the view shown are the left seams 1' and 1 as congruent as the right seams 2 and 2 ' ,

At the top end in the head area of the stand-up pouch can be a spout 17 for removal after filling serve with, for example, a liquid. Alternatively, the stand-up bag according to the invention at its upper end according to the embodiments of the 5a . 5b and 5c with either a zipper 18 ( 5a ), without reclosure ( 5b ) or with a slider 19 ( 5c ) be provided.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 4810109 [0002]
• DE 202013103978 U1 [0002]

Claims (10)

Stand-up pouches with one each at the lower end of a front wall ( 13 ) and a back wall ( 14 ) arranged floor by means of a bottom fold ( 4 ) formed on the front ( 13 ) with the front wall and on the back with the rear wall ( 14 ) over seams ( 1 . 2 . 7 . 8th . 9 . 10 ), wherein a folding edge ( 3 ) the bottom fold ( 4 ) in a filled state of the stand-up pouch extends from a first corner of the floor to an obliquely, in particular diametrically, opposite, second corner of the floor, characterized in that the stand-up pouches have two side folds ( 15 . 16 ) having. Stand-up pouch according to claim 1, characterized in that the one of the side folds is part of a foil forming the front wall, while the other of the side folds is part of a foil strip forming the back wall and / or that in particular the side folds ( 15 . 16 ) by a mutually shifting the front wall ( 13 ) and the back wall ( 14 ) preferably in the direction (F, G) whose areal extent are formed. Stand-up pouch according to one of the preceding claims, characterized by a connecting line connecting a third and fourth diametrically opposite corners of the bottom, which fold edge ( 3 ) of the soil and is shorter than this. Stand-up pouch according to one of the preceding claims, characterized in that in the collapsed state and projected onto the plane of the flat extension of the self-supporting pouch, that seam ( 7 . 10 ), which forms a shorter side edge of the bottom a larger angle with the fold edge ( 3 ) forms as the seam ( 8th . 9 ), which forms a longer side edge of the soil. Stand-up pouch according to one of the preceding claims, characterized in that the gussets ( 15 . 16 ) at its lower end with respect to the folding edge ( 3 ) are arranged in each case completely on one side of the bottom fold and in each case at its lower end with the seam forming a shorter side edge of the bottom ( 7 . 10 ) are connected. Stand-up pouch according to one of the preceding claims, characterized in that at least two, preferably four, extending from the bottom to the upper end of the stand-up pouch extending outer longitudinal edges of the gussets ( 15 . 16 ) are sealed. Stand-up pouch according to one of the preceding claims, characterized in that the inner edge ( 12 ' ) of the (respective) gusset ( 15 . 16 ) in its folded state in a kink ( 20 ) the seam provided for the formation of a bottom edge ( 7 ) ends or crosses. Stand-up pouch according to one of the preceding claims, characterized in that in the folded state a seam forming a side edge ( 8th ) of the stand-up pouch on the front side extends obliquely over the entire width of the stand-up pouch. Stand-up pouch according to one of the preceding claims, characterized in that its walls are at least substantially formed by a single- or multi-ply plastic, paper or plastic-paper composite foil. Stand-up pouch according to claim 9, characterized in that it additionally has a barrier layer.

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