EP0784578A1

EP0784578A1 - Self-supporting solvent package

Info

Publication number: EP0784578A1
Application number: EP95932755A
Authority: EP
Inventors: Reiner Pfuhl; Steffen Marx; Tomas SJÖSTRAND; Otto Trinkhaus; Franz-Peter Hombach
Original assignee: Tetra Laval Holdings and Finance SA
Current assignee: Tetra Laval Holdings and Finance SA
Priority date: 1994-10-14
Filing date: 1995-09-15
Publication date: 1997-07-23
Also published as: PL319575A1; WO1996011859A1; JPH10507150A; CA2197325A1; AU3567695A; MX9701615A; DE4436725A1; CN1159791A; BR9509333A

Abstract

The description relates to a self-supporting solvent package of flexible, sealable material, with a base (1), side walls (2, 2', 4, 5), sealing seams bonding the walls and a pourer. In order to be able to use less material of simpler quality, e.g. with a lower modulus of elasticity in tension, while retaining good self-supporting properties for a predetermined capacity, the invention proposes that the quotient of the relation between the filling volume of the package to the latter's area and the ratio between the filling volume and the spherical area be between 0.8 and 0.85 and the dimension of the package be such that A:B = 0.5 to 0.99, ((A+B)/2):C = 0.9 to 1.7, ((A+B)/2.C):E = 50 to 120 units of length, F:[(A+B)/2+C] = 1 to 0, and G:A = 0 to 1.3, in which A = bottom front edge of the package; B = bottom rear edge; C = lateral bottom edge; E = front height projection; F = front longitudinal edge; G = rear upper edge; with a good modulus of elasticity in tension, ratio between the thickness of the package material and its filling volume and good angles of inclination.

Description

Stable plastic packaging

The invention relates to a standing flow agent pack made of flexible, sealable material, with a bottom, with side walls, with sealing seams connecting the walls and with a pouring device.

Known plastic packs of this type are currently commercially available as ink bags and refill packs for cleaning agents. The material of the pack is sealable plastic in several layers in order to obtain a tight and so rigid pack that it is stable even when filled. The side walls are flattened at the top and connected to a longitudinal sealing seam that extends to the bottom, while the bottom is sealed in, thereby spreading the lower edges of the side walls so that the known, wider and narrower pack at the bottom can stand on the lower edges of the side walls. Either a closure or an incision or a marking is provided as the pouring device in the upper region, so that the end user either opens the closure or tears off or cuts off a tab in order to pour out the liquid.

The known stand-up pouch achieves its stability through the high cost of materials of a multi-layer plastic film, which causes problems during recycling because the material separation of the individual layers is difficult. The addition of an additional material strip for the bottom insert increases the cost of materials and the manufacturing process of the known package.

The invention is therefore based on the object of improving an eluent pack of the type mentioned at the outset in such a way that less and qualitatively simpler material can be used for a given amount of filling material, for example a material with a lower tensile modulus of elasticity for a given thickness, with an acceptable Stability remains maintained and the pack can preferably also be used for larger filling volumes.

This object is achieved in that a) the quotient (Q) of the ratio of the filling volume of the package to the surface of the package and the ratio of the volume of the sphere to the surface of the sphere is between 0.8 and 0.85; b) the dimensions of the pack are chosen such that aa) A: B = 0.5 to 0.99, preferably 0.7 to 0.95, and particularly preferably 0.85 to 0.9; bb) ((A + B) / 2): C = 0.9 to 1.7, preferably 0.95 to 1.4, and particularly preferably 1.05 to 1.25; cc) (( ^A + ^B ) rC): E 50 to 120 length units, preferably 55 to 82 length units and particularly preferably 60 to ÖS length units; dd) F: [ ^A + ^B + C] = 1 to 0, preferably 0.5 to 0, and 2 particularly preferably 0.25 to 0; ee) G: A = 0 to 1.3, preferably 1.2 to 0.8 and particularly preferably 1.1 to 0.9; where A = front bottom edge of the pack

B »rear bottom edge

C = side bottom edge

E <> front elevation projection

F = front longitudinal edge

G «= rear upper edge and

(A + B,. Q is the area of the optionally trapezoidal bottom (1); ² c) the tensile modulus of elasticity in the range of

200 IM ■ ■ 1500 N preferably mm ² mm ²

200 N _hi 750 N and particularly preferably in the range of mm ^{2 DS} mm ²

200 N _hk 375 N | j _β gt, mm ^{2 D, s} mm ² d) the ratio of the thickness of the packing material in the third power to the filling volume of the packing in the range from 0.000027 ₍ j3 ³ to 0.004 ^lιegt e), the tilt angle (α, ß, γ), the package from tipping over when it is exceeded by aliein is greater than 10 ° in the longitudinal direction and is larger in lateral direction than 8 °. Compared to the known superplasticizer packs, the new pack according to the invention requires considerably less material, which is moreover of a simpler quality, the standing ability of the pack nevertheless being comparable to that of the known pack. The solution features according to the invention above teach the teaching of a different design than the known ink bag pack. In other words, with the effort and quality of the material used according to the invention, it would not be possible to produce a bag of the known type, or it would not be able to stand. If one uses the solution features according to the invention, a package is obtained which, although filled, changes its form of manufacture, but which ultimately guarantees the properties required of such a package, in particular stability and good handling. The internal pressure of the filling material allows the known packing to take on an approximately cylindrical shape, the packing material being able to absorb the tensile stresses.

Characteristic a) relates two relationships to one another. The first ratio is the filling volume of the pack to the surface of the pack; while the second ratio is the volume of the sphere to the surface of the sphere. The person skilled in the art understands that, on the one hand, the aim is to optimize the surface of a package, which is made in particular from a flexible material and changes its shape during filling, and on the other hand to achieve an approximation to the conditions in a sphere. The teaching according to the invention states that to determine the quotient in question from the two ratios for the packing on the one hand and the ball on the other hand, of course, the same filling volume is required.

It has also been found that the pack according to the invention can be used particularly advantageously for filling volumes of, for example, three liters or more with the same advantageous properties.

Although the advantageous feature a) according to the above list should be observed, at the same time it is advantageous if the packing dimensions according to feature b) are also specified. For this, it should be assumed that the package has a theoretical shape, in which the package has a square, preferably trapezoidal bottom, from the side bottom edges of which two side walls protrude so that they meet in an upper line in the front area such that a front wall is located above the front bottom edge extends to the common upper line of the two side walls, this common line can also be regarded as the front longitudinal edge. Correspondingly, a rear wall extends over the rear bottom edge and ends in a rear upper edge running perpendicular to the longitudinal edge. An approximately triangular top wall can also be provided between this and the front longitudinal edge. If you look at the pack from the front in a direction parallel to the plane on which the floor is standing, you will see a front height projection, i.e. a height from the front floor edge up to the front longitudinal edge. Likewise, if you look in the opposite direction from the rear of the rear wall, you can see a rear height projection that extends from the rear floor edge up to the rear upper edge. This theoretical model assumes that both the floor and the walls are flat. The front wall is preferably triangular, the rear wall can be trapezoidal or preferably triangular. The long sides are called "side bottom edge" here, while the short sides are the so-called front or rear bottom edge.

With the above definitions, the person skilled in the art can select the dimensions of the pack in the desired manner.

According to the invention, the first ratio A: B mentioned in feature b) is always positive with the condition that both A and B are greater than 0 and A is less than B. It can be seen that the trapezoidal shape of the floor is regarded as the preferred shape by this ratio A: B. The stability is positively influenced by this dimensioning. In particular, the pack tilts somewhat backwards when filled, and the pouring side of the pack becomes almost vertical, that is to say the height of the triangular front wall is approximately vertical. For a better understanding, it should be assumed that the flat floor lies on a horizontal plane and the triangular front wall stands approximately vertically, while the side walls are inclined in accordance with the legs of the triangle of the front wall and meet vertically along the longitudinal edge in the middle above the floor .

With the optimal selection of the package dimensions according to the invention, an optimal use of material is also achieved. That means a good relationship between the packaging surface already discussed above and the filling volume.

If the ratio of F: (ä ± J +) is 1 in feature b), this means that

2

no rear upper edge G is sealed, that is to say the side walls meet at the top along a front longitudinal edge F which is approximately A_ + B longer than the lateral bottom edge C. If this

Ratio in the other extreme, on the other hand, this means that from the front tip, ie above the front wall at the top of the triangle, a seal up to rear upper edge.

If, accordingly, the next ratio under feature b), that is G-Λ, particularly preferably becomes 0, then this means that no tab is sealed. However, it has been shown that the region in which the ratio GΛ is between 1.1 and 0.9 also results in advantageous packaging geometries. In other words, this means and means that triangular flaps are sealed.

If a person skilled in the art observes the solution features according to b), a stand-up pouch pack with relatively large tilting angles results. This also means that the package does not run empty after opening the pouring device.

The feature c), with the tensile modulus of elasticity means that it is possible to use a material of a simpler quality, which, for example, has a lower modulus of elasticity for a given thickness than the known bags made of single-layer or multilayer, thicker plastic. These tensile modulus of elasticity range θ refer to values that can be determined according to DIN 53457. Within the scope of the above-mentioned range for the ratio of the thickness of the packing material in the third power to the filling volume of the packing, it has been shown to be preferred in some embodiments if this ratio is in the range of

0, 0007 -≡ζbisO, 001 ζ dπr aπr

lies. The behavior of the pack has been shown to be particularly robust with somewhat thicker packing materials

The tipping angle according to feature e) according to the invention is the angle at which the package tilts over on its own. A large tilt angle therefore means good climbing ability, which according to the invention can be achieved despite the thin plastic film mentioned above. The tilt angle is checked when the package is filled. A distinction is made here between a first tilt angle α, which denotes the tilting of the filled package forward over the so-called front wall; the tilt angle β, which denotes the lateral tilting of the pack over the respective lateral bottom edge (be it to one or the other side; the pack is preferably constructed symmetrically with respect to the longitudinal center line of the [bottom]); and the third tilt angle γ means (conversely with respect to the tilt angle α) the possibility of tilting the pack backwards over the rear bottom edge. The standing ability of the pack according to the invention can also be defined such that the standing moment is greater than the overturning moment. If the package is "upright" in the manner defined here, then this means that at least part of the package height is greater than the edge lengths of the base area of the package. The test method for determining the respective tilt angle uses a horizontally arranged, flat table on which the bottom of the filled package is placed. The table is then inclined with increasing angle values, and the package remains on the table in the inclined position. The angle is increased until the pack tips over the corresponding bottom edge. It is useful to use a tilting table with an angle scale for a suitable test device. In and of itself, the tilt angle is measured in three directions perpendicular to each other, but because the lateral directions are the same due to the symmetrical structure of the packing (tilt angle β), only the three tilt angles α, β and γ are given according to the invention.

In spite of a soft, flexible packaging material with the specified properties, according to the invention a stable flow agent pack with a very low center of gravity can be achieved, and it has even been found that the drop height of the pack according to the invention is high in relation to known packs. The measures according to the invention also make it possible to use a mono material with the correspondingly good recycling properties as packaging material. A bottom fold is known from the general manufacture of liquid packs from paper coated with plastic, in which a transverse sealing seam is provided from a tube in the bottom region, the ends of which each represent the triangular flaps opposite one another with respect to the bottom. In the known liquid packs, these triangular flaps are folded over and attached to the floor in order to provide a flat, square base for the liquid pack.

In similar manufacturing processes for the stable pack according to the invention, triangular flaps can also be provided next to the front and / or rear bottom edge, which can be folded over and sealed in a manner similar to the known liquid packs.

According to the invention, however, the package can also be designed such that the front and / or the rear bottom edge has a sealed seam. Then one can use these seal seam even as a dividing line, separated by their creation, the triangular flap from the bottom and recycling is zugefüh ^r t. Sealing a triangular flap after or before filling the package improves the stability of the new package. It is particularly preferred if the pouring device or the side to be opened the flap facing the pack is smaller than the other flap oppositely arranged. This way the package is tilted backwards and prevents it from tipping over. You can also create the trapezoidal shape of the floor through the unevenly sized triangular tabs, by which the stability and stability is positively influenced in the above sense.

Furthermore, it is advantageous according to the invention if two side walls as well as a front wall and a rear wall are connected to the floor both via the side bottom edges and if a transverse sealing seam running from the front to the rear bottom edge and an upper seam at the upper ends of the side walls are in the bottom Cross seal seam are attached. Similar to the theoretical package form described above, it is preferred to attach the two side walls and the front and rear wall to the floor and to provide transverse sealing seams both at the bottom in the area of the floor and at a distance above in the area of the upper ends of the side walls. The seal runs according to the upper transverse sealing seam either at the front at the top tip of the triangular front surface to the rear to the rear upper edge or from the rear upper edge to from where the front longitudinal edge begins.The theoretical considerations can be captured particularly well if one of straight transverse sealing seams goes out In the case of a flat bottom, it goes without saying that the lower transverse sealing seam is of course straight. But the upper transverse sealing seam can also be imagined with a more or less long front longitudinal edge, the angle at which it is made against the bottom transverse sealing seam can be more or less acute, preferably between 0 and 30 °, particularly preferably 5 ° up to 25 °. 0 ° here means that the upper transverse sealing seam runs parallel to the lower transverse sealing seam.

If corners of unequal size are sealed in the bottom area or if the triangular flaps described are kept unequally large in the sense defined above, the package does not run empty when the pouring device is open even if the lower transverse sealing seam is parallel to the upper one. The inclination of the upper transverse sealing seam to the lower or the inclination of the upper transverse sealing seam to the lower has the advantage that the air volume in the package above the filling material is reduced and thus less filling material comes into direct contact with the upper transverse sealing seam which is inclined to the floor you fill the pack higher with good pouring properties. In addition, the center of gravity of the product is advantageously shifted forward toward the front bottom edge, and pouring is made easier.

Furthermore, it is advantageous according to the invention if the upper transverse sealing seam consists of at least two straight and / or curved sections in this preferred embodiment The upper transverse sealing seam does not run in a straight line over the entire upper area of the package but is divided into different sections. This measure makes it possible to reduce the head air volume of the pack, to shift the center of gravity in the desired manner and also to improve the pouring out.

It is also advantageous according to the invention if, at least partially, an upper flap formed from double-layered material fields is attached above the upper transverse sealing seam to form a gripping device. When the upper transverse sealing seam is made at an angle to the lower one, the packaging according to the invention remains a double-layered material field from a hose, which can be used as a gripping device and, if necessary, reinforced by a further final sealing seam. The package according to the invention would then have counted three transverse sealing seams from the bottom to the top, namely the transverse sealing seam lying in the bottom, the transverse sealing seam delimiting the side walls at the top and the last-mentioned so-called final sealing seam, which limits the upper double-layered material field and will be explained later. Depending on the course of the upper end sealing seam, this can be connected to or open into the so-called upper transverse sealing seam, which delimits the side walls at the top. The material fields formed in this way provide the user with a good gripping device, even if the material fields located above the upper transverse sealing seam are only clamped between the fingers of one hand

The final sealing seam, which is arranged above the upper transverse sealing seam, can be arranged anywhere or in some places at a distance above the upper transverse sealing seam. As a result, the double-layer material field formed between the upper transverse sealing seam and the final sealing seam is considerably strengthened and strengthened. It can thus be used better as a gripping device or for creating additional measures for forming better gripping devices.

For example, it can be expedient according to the invention if an elongated load distribution device is inserted in the double-lying upper flap under the straight end sealing seam. come to rest and support yourself against them.

In order to further improve a gripping device, it can be particularly advantageous if holes or cutouts are made in the upper tab to form a gripping device at a distance from one another, similar to the arrangement of the fingers of a hand. Elongated holes in plastic elements are known per se as the gripping device. If but if there are several holes, similar to the arrangement of the fingers of one hand - arranged in the double upper flap under the straight end sealing seam, then there is a better load distribution with the result that the gripping device created in this way is more resilient. The arrangement of the gripping device in the upper region of the pack also makes it easier to remove it from collecting containers, shelves or the like. If the measures according to the invention are observed, it is also possible to mount the gripping device in the rear upper region of the package, that is to say at a distance from the pouring device, in order thereby to facilitate and improve the pouring out of the filling material. In addition, this makes it easier to attach differently designed pouring devices to the front wall or at least in the front area of the package at the top.

The attachment of holes or gates furthermore makes it unnecessary to reinforce the material in the double upper flap between the two upper transverse sealing seams. Due to the arrangement of the holes similar to that of the fingers of one hand, the loads can be better distributed over the edges of the holes. For example, it may be expedient to design the diameter of such a hole to be more than 20 mm, preferably 22 mm, which results in an ergonomic arrangement and minimal material stress.

If the ratio of the packaging material to the filling volume is mentioned above, then the material from the grip area is not included in the above information.

In connection with the pack according to the invention, the gripping devices can be designed in a versatile manner and with a wide variety of advantages. The embodiment with the finger holes in the double-lying upper flap ensures better force and tensile distribution in the material without a rod or the like as a load distribution device. According to the invention, the gripping devices can also be arranged well in the area of the double upper flaps if a double upper flap is formed over the upper transverse sealing seam which connects the two side walls at the top, be it that this is reinforced by a further top sealing seam or also at the top without such an end seal. In any case, with an inclined upper transverse sealing seam, an upper flap is formed and, at the same time, the head space over the filling material narrows down with the associated advantages of better pouring, the distribution of the center of gravity, etc.

The most important advantage, however, is the improvement of the stability and the considerably lower expenditure for the material if the measures according to the invention are observed. Further advantages, features and possible applications of the present invention result from the following description of preferred embodiments in conjunction with the attached drawings. Show it:

FIG. 1 shows the theoretical model of a pack with a precise description of various edges and walls,

FIG. 2 shows a more specific embodiment of a plasticizer pack with sealing seams, similar to FIG. 1,

FIGS. 3-5 further other embodiments of plasticizer packs, in which the upper transverse sealing seam is made at different angles to the final sealing seam,

FIG. 6 shows a schematic, perspective view of a further embodiment of the plasticizer pack according to the invention, in which an elongated tube is used as a load distribution device over the end seal seam,

FIGS. 7-9 representations similar to FIG. 6, the gripping device being represented by holes in the double overlaying upper flap,

Figures 10-12 are schematic views of a typical superplasticizer package, in which the respective tilt angle is shown during measurement and

FIG. 13 shows a perspective view of a filled plasticizer pack with a gripping device and folded, triangular tabs.

Figure 1 shows a standing plasticizer in the theoretical or ideal example with straight edges and flat walls. The floor 1 is flat and is intended to be lying on a horizontal, flat surface. It is delimited by a front bottom edge A, a rear bottom edge B and the two side bottom edges, the front of which is designated C With the bottom 1, two side walls 2 and 2 'are connected via the two side bottom edges C, which extend lengthwise at the top touch the front longitudinal edge F above the central longitudinal center line 3 of the floor. Furthermore, a front wall 4 and a rear wall 5 are connected to the floor via the front floor edge A and the rear floor edge B, respectively. Where the longitudinal center line 3 of the floor 1 intersects the front floor edge A, is the base point of the front height projection E. The upper end point of this front height projection E is designated 6 and represents the tip of the isosceles triangle of the front wall 4, from where the front longitudinal edge F extends parallel to the side bottom edge C backwards to point 7. The distance between points 6 and 7 thus represents the length of the front longitudinal edge F.

Similarly, when looking vertically from the rear onto the rear wall 5, the rear height see project tone D, which shows the vertical distance between the two parallel lines B, namely the rear bottom edge, and G, namely the rear top edge. It can be seen that in the embodiment of FIGS. 1 and 2 the rear upper edge G is greater than 0, that is to say the rear wall 5 is trapezoidal and a triangular surface 8 extends between the rear end point of the front longitudinal edge F and the rear upper edge G. If the length of the rear upper edge G becomes 0, the upper triangular surface 8 disappears and the rear wall 5 becomes an isosceles triangle.

In numerous embodiments, in particular in the embodiments shown with FIGS. 3 to 13, the rear upper edge G has been omitted, that is to say it is G - 0. Then the ratio GiA = 0. This is a preferred practical embodiment which has many positive properties shows

One could think of a common plane through the front bottom edge A and the rear top edge G, which then divides the pack into two geometrical partial bodies in the embodiments of FIGS. 1 and 2, namely an oblique wedge with the bottom 1 and an oblique pyramid with the Front wall 4 and the triangular surface 8. The total volume of this pack can thus be regarded as a sum of the mentioned wedge and the pyramid.

In all of the embodiments, the pouring device, which is not detailed, is designated by 9. It can either have a pull tab (Figures 2 to 5) or a screw cap (Figures 6 to 9 and 13) or other means, such as incisions and markings, of which the basic idea of the invention is independent.

The basic figure shown in FIG. 1 is shown somewhat more concretely in FIG. 2 as an eluent pack with sealing seams. In particular, a sealing seam 10 runs along the front bottom edge A, parallel to this in the rear bottom edge B a sealing seam 11. Both are crossed by a longitudinal center sealing seam 12 which runs parallel to the longitudinal center line 3 in [iodine 1]. While the front wall 4 is smooth and has the pouring device 9 only in the upper region, a sealing seam 13 runs through the rear wall 5. Along the rear upper edge G there is a further sealing seam 14 which is parallel to the sealing seam 11 and is crossed by an upper transverse sealing seam 15, that at the rear upper edge G begins the upper wall 8 like the height of a glθichschenkei gene triangle traverses to the rear end point 7 and then extends at an angle along the front longitudinal edge F to the front corner 6

While in the embodiments according to Figures 2 to 5, both the front bottom edge A has a sealed seam 10 and the rear bottom edge B has a sealed seam 11 without triangular flaps, the embodiment of FIG. 8 shows two triangular flaps 16 which are not sealed, although the two sealed seams 10 and 11 have been created. Along the latter, the triangular flaps 16 are merely folded over and attached to the bottom 1, so that the pack in FIG. 8 is again stable.

If the upper transverse sealing seam 15 runs straight or kinked from the front corner 6 of the front wall 4 up to the rear corner 17, which should be thought to be approximately punctiform because the rear upper edge G has become 0, the embodiments result as: they are shown in Figures 3 to 9 and 13. In FIGS. 3 and 5, the upper transverse sealing seam 15 initially runs along the front longitudinal edge F up to its rear end point 7 and then bends at an angle unequal to 0 to the central longitudinal sealing seam 12 in the bottom 1. The cross-seal seam, denoted overall by 15, here consists of a straight section 15a, which defines the front longitudinal edge F, and the rear angled section 15b, which ends at the rear end point 17. The upper cross-seal seam 15 still extends, as in the other embodiments, as before from the front upper end point 6 to the rear end point 17, which limits the filling volume of the pack. In the embodiment according to FIGS. 4 and 6, an upper flap 18 made of double-layered material fields is fastened over the entire upper transverse sealing seam 15 and can be used as a gripping device 19. In the other embodiments according to FIGS. 3, 5 and 6, a double-layered tab 18 is formed over the section 15b of the upper transverse sealing seam 15. If the material fields of the side walls 2 and 2 'are left untrimmed and these extend over the section 15b of the upper transverse sealing seam 15, then the above-mentioned upper flap 18 is formed from the double-layered material fields 18.

You can now reinforce this upper flap 18 in that a further sealing seam, namely the end sealing seam 20, is made at a distance above the upper transverse sealing seam 15. If, in addition, the rear edge of the double upper flap 18 is sealed, that is to say provided with the reinforcing seam 21, then a further stiffening is achieved. In other words, in the embodiments according to FIGS. 3 and 5, the double upper flap 18 is triangularly bordered by three sealing seams, namely the partial gates 15b of the upper transverse sealing seam 15 and the last-mentioned sealing seams 20 and 21, which here are perpendicular to one another. In the embodiment of FIG. 4, too, the upper flap 18 is triangular with the upper transverse sealing seam 15 as the hypotenuse and the sealing seams 20 and 21, which are perpendicular to one another. This triangular tab can be used as a gripping device to support the pouring. The relationships in FIGS. 6 to 9 are the same with regard to the triangular tab 18. In the embodiment shown in FIG. 6, however, an elongated tube 22 is inserted in the double upper flap 18 over the straight end sealing seam 20 into a carrying section 23 made of double-layered plastic material and held in place by a further holding sealing seam 24 arranged above the upper end sealing seam 20. It is understood that gripping a tube 22 creates an improvement and further facilitates pouring

In the embodiment according to FIGS. 7 to 9 and 13, holes 25 are arranged in the upper tab 18 to form the gripping device, which is designated overall by 19, but which can also be replaced by U-shaped gates. According to FIG. 4, there are four holes 25, which are made in the design and arrangement similar to that of the fingers of one hand in the tab 18.

In the embodiment of FIG. 8, the four holes 25 are replaced by an elongated hole 25a, and in the embodiment of FIG. 9, the gripping device 19 is two elongated holes 25a which are conveniently located at a weak angle.

13 also shows the two elongated holes 25a in the more strip-shaped, double flap 18. This is delimited at the top by the end sealing seam 20 and at the bottom by the upper transverse sealing seam 15, the latter being divided into a curved front section 15a and two weakly curved rear sections 15b split

In the lower area in this embodiment of FIG. 13, the triangular flaps are folded down without a sealed seam and shown pinned on the bottom 1

When looking at FIG. 11, one looks in the longitudinal direction 26 of the pack, which is shown in FIG. 10 as an arrow pointing to the left towards the front wall 4. A tilting table 28 is placed on a horizontal base 27 and tilted in the manner shown relative to the horizontal base 27.

In the case of Figure 10, the filled package is tilted around the front bottom edge A in the direction of the curved arrow 29 so that the bottom 1 with the tilting table 28 makes the angle α to the base 27. If the package remains without tipping, then the angle α increases until the critical angle is reached, the so-called tilt angle α.

In the opposite direction, according to FIG. 12, the tilting table 28 is moved backwards around the rear one Bottom edge B tilted in the direction of the curved arrow 30 so that the bottom 1 and thus the tilting table 8 assumes the angle γ against the horizontal base 27. Here too, the procedure is as described above and it is determined whether the package is at the selected angle γ or tilts.

According to FIG. 11, the lateral tilt is determined, which is the same in one direction as in the opposite direction, because the packing is constructed symmetrically with respect to the longitudinal center line 3. Here, too, the tilting table 28 is tilted by an angle, which here is due to the lateral Tilt according to the curved arrow 31 is the lateral tilt angle ß

Regarding the list of items

I floor

2, 2 'side walls

3 longitudinal center line

4 front wall

5 rear wall

6 upper end of the front height projection E

7 rear end point

8 top wall, triangular surface

9 pouring device

10 sealed seam

II sealed seam

12 longitudinal center sealed seam

13 sealed seam

14 sealed seam

15 upper transverse sealing seam 15a section

15b subsection

16 triangle tabs

17 back corner

18 tab, material fields

19 gripping device

20 final sealed seam

21 reinforcement seam

22 tube

23 carrying section

24 holding seal seam

25 holes 25a slot

26 longitudinal direction

27 document

28 tilting table

29 arrow

30 arrow

31 arrow

A front bottom edge B rear bottom edge C side bottom edges D rear height projection E front height projection F front longitudinal edge G rear top edge

Claims

Patent claims

1. Standing up flow agent pack made of flexible, sealable material, with a bottom (1), with side walls (2, 2 ', 4, 5), with sealing seams connecting the walls (10-15) and with a pouring device (9), characterized that

a) the quotient (Q) of the ratio of the filling volume of the package to the surface of the package and the ratio of the volume of the sphere to the surface of the sphere is between 0.8 and 0.85;

b) the dimensions of the pack are chosen such that aa) A: B = 0.5 to 0.99, preferably 0.7 to 0.95, and particularly preferably 0.85 to 0.9; bb) ((A + B) / 2): C = 0.9 to 1.7, preferably 0.95 to 1.4, and particularly preferably 1.05 to 1.25; cc) (( ^A + ^B ) * C): E = 50 to 120 length units, preferably 55 to 82 length units and 2 units and particularly preferably 60 to 65 length units; dd) F: f ^{A + B} + Cl = 1 to 0, preferably 0.5 to 0, and ^ 2 particularly preferably 0.25 to 0; ee) G: A = 0 to 1, 3, preferably 1,

2 to 0.8 and particularly preferably 1.1 to 0.9; where A = front bottom edge of the pack

B - rear bottom edge

C = side bottom edge

E = front elevation projection

F = front longitudinal edge

G - rear upper edge and

(A + B). Q is the area of the optionally trapezoidal bottom (1); ^2nd

c) the tensile modulus of elasticity in the range of

200 N to _£ 1500 N preferably mm ² mm ² ^{200 N} _js 750 N _and particularly preferred in the range of mm ² mm ²

200 N _hk 375 N, mm ^{2 DIS} mm ² d) the ratio of the thickness of the packing material in the third power to the filling volume of the packing is in the range of

lies. e) the tilt angle (α, ß, γ), when exceeded the package tilts by itself, is greater than 10 ° in the longitudinal direction and greater than 8 ° in the lateral direction.

Package according to claim 1, characterized in that the ratio of the thickness of the packaging material in the third power to the filling volume of the package in the range of

lies.

3. Pack according to claim 1 or 2, characterized in that the front and / or the rear bottom edge (A, B) has a sealed seam (10, 11)

4. Pack according to one of claims 1 to 3, characterized in that with the bottom (1) both a) over the side bottom edges (C) two side walls (2, 2 ') and b) a front wall (4) and one Rear wall (5) are connected and that

- In the bottom (1) a transverse sealing seam (12) extending from the front (A) to the rear bottom edge (B) and an upper transverse sealing seam (15) are provided on the upper ends of the side walls (2, 2 ').

5. Pack according to one of claims 1 to 4, characterized in that the upper Cross seal seam (15) consists of at least two straight and / or curved sections (15a, 15b)

6. Pack according to one of claims 1 to 5, characterized in that at least partially above the upper transverse sealing seam (15) an upper flap formed from double material fields (18) is attached to form a gripping device (19).

7. Package according to one of claims 1 to 6, characterized in that an end sealing seam (20) is at least partially at a distance above the upper transverse sealing seam (15) at the upper, outer end of the double upper flap (18).

8. Pack according to one of claims 1 to 7, characterized in that an elongated load distribution device (22) is inserted in the double upper flap (18) under the straight end sealing seam (20).

9. Pack according to one of claims 1 to 8, characterized in that in the upper tab (18) with the formation of a gripping device (19) at a distance from one another - similar to the arrangement of the fingers of a hand - holes (25, 25a) or gates ¬ are brought.