EP1892193B1 - Bag with a rigid bottom - Google Patents

Abstract

The case has a rectangular front wall (1) in a flat cut, at which a lateral fold (13, 13') is attached longitudinally to double sides lying opposite to each other across a lateral fold line (2). A bottom-side-foldings (18, 18') attached across the side folding lines at the bottom folding (16) and attached across the bottom folding line (5) at both side foldings. An adhesive strip is provided at the sealing cover (91), which is opened by a removable protective plastic film or is activated with pressure.

Description

The invention relates to a pocket for receiving three-dimensional objects with a flat-lying blank rectangular front wall, on which along two opposite parallel sides in each case via a Seitenfalzlinie a side fold hangs symmetrically in its center parallel to Seitenfalzlinie extending, in the erected state to the front wall towards a folded on the middle fold, wherein on a transverse to the two opposite parallel sides extending third side of the front wall via a Bodenfalzlinie a bottom fold hanging symmetrically in its center parallel to the Bodenfalzlinie, bent in the erected state of the bag in the direction of the front wall away Has center fold, wherein in each case one bottom-side fold over one of the Seitenfalzlinien on the one hand to the bottom fold and on the bottom fold line on the other hand to each one of the two side folds, wherein the respective au en directed free edge of the two bottom-side folds of two straight edge lines of different lengths, which run at an obtuse angle to each other, and wherein from the respective point of impact of the two straight edge lines to one of the intersections of the two Seitenfalzlinien with the Bodenfalzlinie each having a straight groove or perforation line runs.

A folding bag or pattern bag with all these features is from the DE 7 111 491 U known.

Such bags are usually used for the transport and / or storage of voluminous objects, as sales or gift packaging and in particular as photo bags. They are similarly available in many sizes and shapes in the paper trade.

When opening these pockets spread in the flat state about their respective center fold and thus split into two symmetrical halves gussets on and thus release an opening volume to the pocket interior. This allows a convenient filling of the bag with the desired contents, such as a stack of photos. Due to the usual geometric design of the bottom-side fold, the bottom of the bag, however, initially remains pointed when opening, as in Fig. 5 is shown. Only by a cumbersome fidgeting with one hand into the pocket interior and a back pressure from the pointed bottom underside with the other hand can be - almost forcefully - a flat bottom of the bag press right, but eventually snaps back into the pointed bottom shape, as soon as the pressure and Back pressure with hands in the bottom area of the bag stops.

A flat floor is certainly not necessary for many applications of the conventional bag. However, if such is desired, for example to be able to set up the bag comfortably and steadily on a table or a storage surface or to permanently free the full filling cross-section of the bag from top to bottom, the production of such a stand is - as described above. awkward and with one not low risk of accidentally damaging the bag.

Object of the present invention is in contrast, with as inexpensively technical modifications a bag of the type described above so that they can be easily and inexpensively, in particular without significant and externally visible changes compared to conventional bags produced and on the other hand convenient and effective is, wherein the outer shape of the bag should not change from already known patterns, but especially when opening the bag automatically forms a floor and the entire opening cross-section of the bag is released from top to bottom in full size, without causing a special Action of the user needs.

According to the invention, this object is achieved in a surprisingly simple and effective manner in that the point of impact of the two straight edge lines in each case extending one of the gussets between the respective center fold of the gusset and the Seitenfalzlinie, about which the gusset hangs on the front wall, and in Extension of the bottom fold between the middle fold of the bottom fold and the bottom fold line, over which the bottom fold adheres to the front wall is arranged, and that the edge lines on the one hand in a parallel to Bodenfalzlinie further Bodenfalzlinie and the edge lines on the other hand in a parallel to the Seitenfalzlinie further Seitenfalzlinie or in an edge line parallel to the side fold line of the side fold.

With the help of this from the prior art according to the cited above DE 7 111 491 U deviating features can be found in the Bag according to the invention on the one hand exactly define the exact location of the impact points of the two straight edge lines and on the other hand, the respective end points of these edge lines. This is therefore not more or less at the discretion of the skilled person, only minor structural changes compared to generic bags, but just because of exactly these differences, the pocket of the invention can solve the above-mentioned invention task, while the pockets according to the prior art just just can not:

The resulting when unfolding the bag according to the invention pairs of triangular surfaces - which, for example, in the in Fig. 2 on the right side are limited by the edge line 29a, the groove 21 and a portion of Bodenfalzlinie 5 or by the edge line 29b, the groove 21 and a portion of the Seitenfalzlinie 2 and on the opposite left side by the edge line 29a ' The groove 21 'and a portion of the bottom fold line 5 or the edge line 29b', the groove 21 'and a portion of the side fold line 2 - geometrically differ considerably from the corresponding areas in the known pocket after the DE 7 111 491 U , This ultimately results in completely different properties:

Due to the additional and especially not full-surface material application namely in the known bag after the DE 7 111 491 U the two triangular surfaces, which are formed by the straight edge lines, not exactly on each other. The double material of these surfaces acts on the perforation line with additional restoring forces and pushes the bottom surfaces of the folds apart. This will set up the well-known bag hampered - so difficult - and an independent standing of the bag on a flat surface is not possible, which in turn will be a hindrance when filling the bag. Because the points of impact correspond to the respective point of intersection of the middle folds, it is not possible to set up the known pocket without additional holding from the inside.

In contrast, the bag according to the invention not only minor, but in terms of the overall product significant advantage that there is no further surface material order, as in the known bag after the DE 7 111 491 U , In this way, the two triangular surfaces described above are flat and pressed uniformly. The setting up of the bag according to the invention is so much easier for a, on the other hand, the uniform bottom allows an independent standing of the bag on a flat surface, which is extremely helpful when filling the bag. By the impact points (for example, 20, 20 'in Fig. 2 ) not at the intersection of the median fold (for example, 24 or 24 'and 27 in Fig. 2 ) correspond, the bag according to the invention as if by itself, since the recessed angle for the erecting gusset (for example, 23, 23 'in Fig. 2 ) offers a free space in the area of the floor.

• durch den stumpfen Winkel zwischen den geraden Kantenlinien (beispielsweise 29a und 29b bzw. 29a' und 29b' in Fig. 2) der Auftreffpunkt nicht der Schnittpunkt der beiden Mittelfalze ist, sondern im Zuschnitt weiter innen liegt;
• und durch das Ansetzen der Seiteneinschläge kein weiterer Materialauftrag wie beim Zuschnitt nach der DE 7 111 491 U entsteht.

In summary, it can be stated that significant differences in the cut for the bag according to the invention compared to the blank for the known bag after DE 7 111 491 U lie in that

• by the obtuse angle between the straight edge lines (for example, 29a and 29b or 29a 'and 29b' in FIG Fig. 2 ) the point of impact is not the point of intersection of the two middle folds, but lies further in the cut;
• and by the application of the side impacts no further application of material as in the blank after the DE 7 111 491 U arises.

With the provision of a - opposite the usual diagonal connection asymmetric and obtuse receding - geometric design of each outwardly directed free edge of the two bottom-side folds and by additionally mounted groove or perforation in the bottom-side fold the invention described above completely solved. When opening the bag according to the invention automatically forms the desired floor, which then permanently releases the entire opening cross-section of the bag from top to bottom. From the outside, the modification of the bag according to the invention is only to be considered when the floor has formed. Incidentally, this measure does not have any influence on the shape of the bag, so that all known designs for conventional bags with pointed bottom can also be used in the case according to the invention.

One class of embodiments of the pocket according to the invention with central adhesive is characterized in that on the side facing away from the front wall of the two side folds on the parallel to the Seitenfalzlinie another Seitenfalzlinie a back wall half hangs, and that the rear wall halves are glued together.

In developments of this class of embodiments bag with central adhesive reinforcement of the rear wall can be achieved simply by the fact that on the side facing away from the front wall of the bottom fold at the parallel to the Bodenfalzlinie further Bodenfalzlinie a back strap or a back cover attaches, and that the back flap or the Back cover is glued to the rear wall halves.

An alternative class of embodiments of the invention with direct side bonding on a back cover is characterized in that on the side facing away from the front wall of the two side folds at the parallel to the Seitenfalzlinie another Seitenfalzlinie adheres an adhesive flap that on the front wall facing away from the bottom fold on the parallel to the Bodenfalzlinie further Bodenfalzlinie a back cover hangs, and that the back cover is glued to the adhesive tabs.

In a further development of this class of embodiments, the side gluing can be done indirectly with the back cover by attaching a further adhesive tab on two further extension of the two Seitenfalzlinien, further Seitenfalzlinien on the back cover.

In particular, the two further adhesive tabs can be glued to the adhering to the two side folds adhesive tabs.

Instead, it is provided in other variants, that the two other adhesive tabs are glued to the respective, divided by the corresponding medial fold outwardly half of the side fold.

Especially material-saving is a third class of embodiments of the bag according to the invention, in which a split gusset is used, wherein on the side facing away from the front wall of the bottom fold at the parallel to Bodenzufalzlinie further Bodenfalzlinie a back cover hangs, with two in extension of the two Seitenfalzlinien extending further Seitenfalzlinien on the back cover in each case attaches a further adhesive flap, and wherein the two further adhesive tabs are glued to the respective, divided by the corresponding medial fold outwardly half of the side fold.

A particularly preferred embodiment of the invention is characterized in that on the side opposite the bottom fold side of the front wall, a closure flap is hinged, with which the bag can be opened and closed again if necessary.

Advantageous developments of this embodiment provide an adhesive strip on the closure flap in order to secure the closure of the pocket or to make it permanent.

In order to improve the handling of the bag according to the invention, in particular with regard to its easy closeability, it is provided in preferred variants of these developments that the adhesive strip is equipped with a removable to activate the adhesive surface protective film.

Alternatively, the adhesive strip can also be equipped with an exposed adhesive surface, which can be activated simply by pressing.

Embodiments have also proven to be advantageous in which a cover fold is articulated on the side of the two lateral folds opposite the bottom-side fold, which reinforces the upper sections of the side folds and a filling aid when filling the pocket when it is folded into the pocket interior Cause contents.

For reasons of aesthetics, but also because of the ease of manufacture, the gussets will normally be mounted symmetrically on the two side edges of the bag. However, asymmetric designs may also be advantageous for special applications.

Finally, an embodiment of the pocket according to the invention in which the envelope is made of paper, foil or composite material is advantageous.

Further features and advantages of the invention will become apparent from the following detailed description of an embodiment of the invention with reference to the figure of the drawing, which shows details essential to the invention, and from the claims. The individual features may be implemented individually for themselves or for a plurality of combinations in variants of the invention, the scope of protection, however, being defined by the claims.

In the schematic drawing embodiments of the invention are shown, which are explained in more detail in the following description, wherein physically and / or functionally identical features are designated by like reference numerals.

Fig. 1

einen flachliegenden Nutzen, aus dem eine erste Ausführungsform der erfindungsgemäßen Tasche mit Mittelklebung an zwei Rückwandhälften aufgefaltet werden kann;

Fig. 2

einen flachliegenden Nutzen für eine zweite Ausführungsform mit direkter Seitenklebung der Rückwand;

Fig. 3

einen flachliegenden Nutzen für eine dritte Ausführungsform mit geteilten Seitenfalten an Vorderwand und Rückwand;

Fig. 4

eine räumliche Darstellung einer Ausführungsform der erfindungsgemäßen Tasche im geöffneten. Zustand mit selbsttätig ausgebildetem Standboden; und

Fig. 5

eine Tasche nach den Stand der Technik mit Spitzbodenbildung beim Öffnen.

Show it:

Fig. 1

a flat-lying benefit, from which a first embodiment of the pocket according to the invention can be unfolded with central adhesive on two rear wall halves;

Fig. 2

a flat lying benefit for a second embodiment with direct side-wall back wall;

Fig. 3

a flat lying benefit for a third embodiment with split gussets on front wall and rear wall;

Fig. 4

a spatial representation of an embodiment of the bag according to the invention in the open. Condition with self-trained floor stand; and

Fig. 5

a bag according to the prior art with pointed bottom formation when opening.

All in the drawing in the FIGS. 1 to 4 illustrated pockets or their flat blanks each have a rectangular front wall 1 , which is bounded on two of their opposite sides by Seitenfalzlinien 2, 2 ' and on a transverse to these two sides third side by a Bodenfalzlinie 5 .

The in Fig. 1 schematically illustrated flat blank for a pocket according to the invention with central adhesive also contains two hinged at the Seitenfalzlinien 2, 2 'gussets 13, 13' , the each divided by a middle fold 14, 14 ' substantially symmetrically in two halves. At each of the two side folds 13, 13 'is via a further Seitenfalzlinie 12, 12' a rear wall half 15, 15 ' articulated. Next, a bottom fold 16 is hinged to the front wall 1 on the Bodenfalzlinie 5, which in turn is divided by a middle fold 17 in two halves.

In the respective corner formed between the bottom fold 16 and the two side folds 13, 13 ', there is provided in each case a bottom-side fold 18, 18' whose respective outwardly directed free edges consist of two straight edge lines 19a, 19b or 19a ', 19b 'of different lengths, which run under a directed with its tip to the front wall 1 obtuse angle to each other, so that the point of impact 10 or 10' of the two straight edge lines 19a, 19b and 19a ', 19b' respectively in extension of one of the gussets 13 or 13 'between the respective center fold 14 or 14' of the corresponding side fold 13 or 13 'and the Seitenfalzlinie 2 and 2', via which the side fold 13 or 13 'on the front wall 1 hangs, and in extension of Bottom fold 16 between the center fold 17 and the Bodenfalzlinie 5, via which the bottom fold 16 attaches to the front wall 1, is arranged. From the respective impact point 10 or 10 'of the two straight edge lines 19a, 19b and 19a', 19b 'to one of the intersections of the two Seitenfalzlinien 2 and 2' with the Bodenfalzlinie 5 each has a straight groove or perforation 11, 11 '.

Next, the in Fig. 1 flat benefits shown on the front wall 1 side facing away from the bottom fold 16 at a parallel to the Bodenfalzlinie 5 extending further Bodenfalzlinie 65 appending a back plate 66 , which in the cut from the blank erected bag with the rear wall halves 15, 15 'is glued to reinforce the bottom part. The back strap 66 may also be formed as a longer back cover in further developments not shown.

The in Fig. 2 illustrated flat blank for a pocket according to the invention with direct side-bonding of the rear wall contains the following further features whose function and interaction have already been described above:

Two side folds 23, 23 ' each with center fold 24, 24' and over more Seitenfalzlinien 22, 22 ' hinged thereto adhesive tabs 25, 25' ; In addition, a bottom fold 26 with central fold 27 and between bottom fold 26 and the two side folds 23, 23 'arranged bottom-side folds 28, 28' with obtuse each in a point of incidence 20 and 20 ' converging straight edge lines 29a, 29b and 29a' , 29b ' and in each case a straight groove or perforation line 21 or 21' . Moreover, in the embodiment according to Fig. 2 on the side facing away from the front wall 1 of the bottom fold 26 at a parallel to the Bodenfalzlinie 5 extending further Bodenfalzlinie 75 a back cover 76 hangs, which is glued to the adhesive tabs 25, 25 'in the erected state of the bag.

Fig. 3 shows a flat blank for a pocket according to the invention with divided gussets on the front wall and rear wall. It can be seen the following further features:

Two side folds 33, 33 ' each with center fold 34, 34'; also a bottom fold 36 with middle fold 37 and between bottom fold 36th and the two side folds 33, 33 'arranged bottom-side folds 38, 38' with obtuse each converging in an impact point 30 or 30 ' straight edge lines 39a, 39b and 39a', 39b ' and each have a straight groove or perforation line 31st or 31 ' . Moreover, in the embodiment according to Fig. 3 on the side facing away from the front wall 1 of the bottom fold 36 at a parallel to Bodenzufalzlinie 5 further Bodenfalzlinie 85 a back cover 86 attaches to which more Seitenfalzlinien 32, 32 'adhesive tabs 35, 35' are hinged, in the erected state of the bag with the respective, divided by the corresponding medial fold 34 and 34 'outwardly half of the side fold 33 and 33' are glued.

In all embodiments of the invention shown in the drawing is at the bottom fold 16; 26; 36; 46 opposite side of the front wall 1 a shutter 91; 92; 93; 94 hinged.

Not shown in the drawing are further developments in which on the closure flap 91; 92; 93; 94, an adhesive strip is provided. It is favorable for the handling of the bag according to the invention, if the adhesive strip is equipped with a removable film for activating the adhesive surface, or if the adhesive surface is exposed and can be activated by pressure.

Further, in non-illustrated embodiments of the bag according to the invention at the bottom-side fold 18, 18 '; 28, 28 '; 38, 38 'opposite side of the two side folds 13, 13'; 23, 23 '; 33, 33 '; 43, 43 'each be hinged a Abdeckfalte.

Fig. 4 shows in diagrammatic three-dimensional view of an embodiment of the bag according to the invention in the open state with the opening of the bag automatically the forming flat stand-up, the lower of the two 'divided side folds 43, 43' by the centerline 44, 44 of the first divided by the center fold 47 bottom gusset 46 due to the modifications of the invention - in Fig. 4 unrecognizable - bottom-side wrinkles is formed.

In contrast, it represents Fig. 5 a conventional bag according to the prior art with non-inventively modified bottom-side folds, in which after opening below the gussets 53, 53 ' a formed by the bottom fold 56 loft remains standing.

Particularly suitable for practical applications are bags made of paper according to the invention; Cardboard, foil or composite material having a fold width of preferably 1.5 cm to 15 cm.

Claims (12)

1. Container for receiving three-dimensional objects with a rectangular front wall (1)in the section lying flat, on which along two opposite parallel sides in each case there is suspended over a lateral folding border line (2, 2') a lateral fold(13, 13'; 23, 23'; 33, 33'; 43, 43') which exhibits symmetrically in its middle a central fold line (14, 14'; 24, 24'; 34, 34'; 44, 44') running parallel to the lateral folding border line (2, 2'), in the set up state folding to the front wall (1), wherewith on a third side of the front wall (1), running transversely to the two opposite parallel sides, there is attached above a bottom fold line (5) a bottom fold (16; 26; 36; 46), which exhibits a central fold (17; 27; 37; 47) running symmetrically in its middle parallel to the bottom fold line (5), in the set up state of the container folded away in direction from the front wall (1), whereby in each case one bottom-side fold (18, 18'; 28, 28'; 38. 38') adheres over in each case one of the side fold lines (2, 2') on one side to the bottom fold (16; 26; 36; 46) and above the bottom fold line (5), on the other side to in each case one of the two side folds (13, 13'; 23, 23'; 33, 33'; 43. 43'), whereby the outward facing free edge of the two bottom-side folds (18, 18'; 28, 28'; 38. 38') consists of two straight edge lines (19a, 19b, 19a', 19b'; 29a, 29b, 29a', 29b'; 39a, 39b, 39a', 39b') of different length, which run to each other at an obtuse angle, and whereby from the meeting point in question (10, 10'; 20, 20'; 30, 30') of the two straight edge lines (19a, 19b, 19a', 19b'; 29a, 29b, 29a', 29b'; 39a, 39b, 39a', 39b') to one of the intersection points of the two side fold lines (2, 2') with the bottom fold line (5) in each case a straight groove or perforation line (11, 11'; 21, 21'; 31, 31') runs, characterised by the fact that the meeting point (10. 10'; 20, 20'; 30, 30') of the two straight edge lines (19a, 19b, 19a', 19b'; 29a, 29b, 29a', 29b'; 39a, 39b, 39a', 39b') is arranged in each case in extension of one of the side folds (13, 13'; 23, 23'; 33, 33'; 43, 43') between in each case the central fold line (14, 14'; 24, 24'; 34, 34'; 44, 44') of the side fold (13, 13'; 23, 23'; 33, 33'; 43, 43') and the side fold line (2, 2') over which the side fold (13, 13'; 23, 23'; 33, 33'; 43, 43') adheres to the front wall (1), also in extension of the bottom fold (16; 26; 36; 46) and the bottom fold line (5) over which the bottom fold (16; 26; 36; 46) adheres to the front wall (1), and that the edge lines (19a, 19a'; 29b, 29b'; 39b, 39b') end on one side in a further bottom fold line (65; 75; 85) running parallel to the bottom fold line (5) and the edge lines (19b, 19b'; 29a, 29a' or 39a, 39a') on the other side in a further side fold line (12, 12'; 22, 22') running parallel to the side fold line (2, 2') or in an edge line of the side fold (33, 33') running parallel to the side fold line (2, 2').
2. Container according to claim 1, characterised by the fact that on the side of the two side folds (13, 13') turned away from the front wall (1) in each case on the further side fold line (12, 12') running parallel to the side fold line (2, 2') a half of the back wall (15, 15') adheres and that the back of the wall halves are glued together.
3. Container according to claim 2, characterised by the fact that on the side of the bottom fold (16) turned away from the front wall (1) there adheres to the further fold line (65) running parallel to the side fold line (5) a back cover plate (66) or a back cover, and that the back cover plate (66) or the back cover is glued to the back of the wall halves (15, 15').
4. Container according to claim 1, characterised by the fact that to the side of the two side folds (23, 23') turned away from the front wall (1) in each case on the further side fold line (22, 22') running parallel to the side fold line (2, 2') an adhesive cover plate (25, 25') adheres, that on the side of the bottom fold (26) turned away from the front wall (1) on the further bottom fold line (75) running parallel to the bottom fold line (5) a back cover (76) adheres, and that the back cover (76) is glued to the adhesive cover plate (25, 25').
5. Container according to claim 4, characterised by the fact that over two furtherside fold lines on the back cover (76) running in extension of the two side fold lines (2, 2') in each case a further adhesive cover plate adheres.
6. Container according to claim 5, characterised by the fact that the two further adhesive cover plates are glued to the adhesive cover plates (25, 25') adhering to the two side folds (23, 23').
7. Container according to claim 5, characterised by the fact that the two further adhesive cover plates are glued in each case through the corresponding middle fold (24, 24') to the outwardly separated halves of the side fold (23, 23').
8. Container according to claim 1, characterised by the fact that to the side of the bottom fold (36) turned away from the front wall (1) on the further bottom fold line (85) running parallel to the bottom fold line (5) a back cover (86) adheres, that over two further side fold lines (32, 32') on the back cover (86) running in extension of the two side fold lines (2, 2') in each case a further adhesive cover plate (35, 35') adheres, and that the two further adhesive cover plates (35, 35') are glued in each case through the corresponding central fold line (34, 34') to the outwardly separated halves of the side fold (33, 33').
9. Container according to one of the foregoing claims, characterised by the fact that to the side of the front wall (1) situated opposite to the bottom fold (16; 26; 36; 46) a closure valve (91; 92; 93; 94) is linked.
10. Container according to clam 9, characterised by the fact that on the closure valve (91; 92; 93, 94) an adhesive strip is provided which can be released through a tear-off strip or activated through pressure.
11. Container according to one of the foregoing claims, characterised by the fact that to the side of the two side folds (13, 13'; 23, 23'; 33, 33'; 43, 43') situated opposite the bottom-side fold (18, 18'; 28, 28'; 38, 38') in each case a cover fold is linked.
12. Container according to one of the foregoing claims, characterised by the fact that the container is made of paper, foil or compound material.

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