EP2966009A1 - Film insert for a flexible bulk container and flexible bulk container - Google Patents

Abstract

The invention relates to a foil insert (30) for a flexible bulk material container for the storage and transport of filled solid, preferably granular material. This has a bottom (38) and a wall (31) with several, preferably four wall sections (32, 33, 34, 35) and with a preferably cuboidal basic shape. In this case, bottom (38) and wall (31) are preferably formed of the same material and permanently connected to each other, preferably by at least one weld and / or gluing. At least one inwardly extending, flexible stiffening element (42, 43, 44, 45) is provided for stabilizing the shape of the wall (31), wherein the stiffening element (42, 43, 44, 45) is provided with two adjacent wall sections (32, 33, 34, 35) is connected. The invention is characterized in that the at least one stiffening element (42, 43, 44, 45) is connected to the wall sections (32, 33, 34, 35) by means of an intermediate piece (52).

Description

The invention relates to a presentation insert for a flexible bulk material container according to the preamble of claim 1. Furthermore, the invention relates to a flexible bulk material container according to the preamble of claim 13.

Flexible bulk material containers are used for storage and transport of filled material. These are usually solid, preferably granular material, so materials of different grain size. Such flexible bulk containers, for example, simply referred to as "large bags" or as a "flexible middle container for bulk goods" according to the English "Flexible Intermediate Bulk Container" or also referred to as FIBC.

As a rule, a flexible bulk material container of the type mentioned here approximately comprises a volume of approximately 1,000 liters, generally approximately between 500 liters and 2,000 liters. However, it is also possible to produce significantly larger or smaller containers. The addressed here flexible bulk containers are usually made of a stable plastic fabric, in particular polypropylene (PP), or a material with comparable properties. Such fabric-like materials have high durability and tear resistance. In addition, the containers are in unfilled state can be folded to save space. To allow easy transport of the filled bags, loops are typically arranged on the bulk goods container, for example in the region of the corners or on the side surfaces. These can be taken for example by a crane or the like.

In order to be able to absorb particularly fine or sensitive materials, the flexible bulk material containers often have an inner lining, a so-called insert or "inliner". This is essentially formed according to the shape of the flexible bulk goods container and used in this. Such is typically formed from a film and is accordingly also referred to as a film insert. It has at least one bottom and a peripheral wall, which is formed in accordance with the inner shape of the bulk goods container usually with cuboid basic shape. Optionally, in addition to a floor in addition a lid may be provided as the top. To fill the material is then often arranged in the top of a filling or a filler neck, which is or in particular closable.

Thus, the film insert and thus the flexible bulk material container during filling a granular, that is more or less fine-grained material at least substantially retains its shape, the film insert on the inside running, flexible stiffening elements. These serve to stabilize the shape of the wall. In this case, each of the stiffening elements is connected to two adjacent or two other, for example, opposite wall portions of the wall. The stiffening elements can for example stabilize two adjacent wall sections over the corner or just opposite wall sections. In the latter case, as a rule, a problematic crossing region of the stiffening elements is still present.

As stiffening elements, for example, foil sections or flexible gratings, for example made of plastic, are used. In order to connect these with the wall, seams or even spot welds are usually made.

A disadvantage of these solutions from the prior art is that films are not stable enough in the rule. In the case of gratings made of sturdy plastic, due to a combination of different materials, locally strong material stresses occur and, on a regular basis, small damages and holes are formed. So that can For example, escape material or destruction of the outer skin or wall of the foil insert be the result.

The object of the present invention is therefore to provide a film insert for a flexible bulk material container, in which stiffening elements permanently stable and in particular without risk of damaging the outer wall can be attached.

A foil insert with the features of claim 1 solves this problem. Accordingly, the at least one stiffening element is connected to the wall sections by means of an intermediate piece. Thus, a connection with the intermediate piece and the stiffening element on the one hand and between the intermediate piece and the wall on the other hand can be produced. Thus, various bonding methods can be used and different material properties can be taken into account.

The intermediate piece is formed in particular from the same material as the wall. This offers the advantage that a cohesive connection between the intermediate piece and the wall can be produced. Weak points due to different materials are avoided.

In particular, the wall and the intermediate piece are permanently connected to each other. It is a cohesive connection. The connection is designed in particular as a substantially continuous connection, particularly preferably with a few long sections. More preferably, a continuous or uninterrupted connection over the entire longitudinal extent of the intermediate piece is provided. Preferably, for this purpose, a weld and / or a bond between the wall and the intermediate piece is provided. For example, can be formed as a permanent connection, a continuous weld. A weld or gluing between two identical materials ensures a particularly low-stress and stable attachment.

Particularly preferably, the intermediate piece and the stiffening element are permanently connected to each other. Preferably, at least one weld seam and / or one bond serve for this purpose. The intermediate piece and the stiffening element are formed in particular of different materials. Since the intermediate piece and the stiffening element but not in the region of the wall of the foil insert with each other This does not weaken the same. This connection is located inside the foil insert.

The intermediate piece is in particular multi-layered, preferably double-layered. Particularly preferably, the stiffening element is introduced between two of the layers of the intermediate piece. Preferably, the stiffening element between two of the layers of the intermediate piece is fixed, in particular permanently. For a solid connection between the intermediate piece and the stiffening element is provided. By the stiffening element is mounted between two of the layers of the intermediate piece, the layers of the intermediate piece can be connected to each other at least in sections.

The intermediate piece is in particular formed in one piece, preferably by folding several layers, in particular two layers. This means that the intermediate piece can be formed in one piece. This can for example be half folded. This ensures that two layers of the intermediate piece lie on each other. In particular, the stiffening element can be introduced into these two layers.

Preferably, the intermediate piece may be composed of separate pieces of material, in particular of the same material. Preferably, two or more separate layers may be provided. For this purpose, several layers of the material are preferably positioned one on top of the other and suitably connected to one another.

The layers of the intermediate piece are in particular permanently connected to each other, preferably at least in sections, particularly preferably over the entire longitudinal extent, in particular at least partially without interruption. For this purpose, preferably a cohesive connection, such as a weld and / or gluing is used. For a secure and material-friendly connection is provided.

The connecting element is designed in particular as a grid and / or thread system or thread network. A wall portion associated with end portions of the connecting element are embedded in particular in one of the intermediate pieces. The opposite end portions of one of the connecting elements are embedded in different or separate pieces. This can be a separate Attach the end portions of the connecting element to the respective wall sections. For this purpose, a separate intermediate piece is provided in each case.

The layers of the intermediate piece are in particular connected by cohesive connections, in particular by welds and / or bonds. These cohesive connections preferably run in recesses of the stiffening element, for example in areas between the lattice struts of the lattice net and / or threads of the thread system. This means that between two grid struts of the grid or between two threads of the thread network, a portion of a cohesive connection or a weld runs. This allows a fixation of the stiffening element. Since the broken, cohesive connections or welds run inside the foil insert, there is no damage to the wall of the foil insert.

Preferably, the thread system, in particular thread network, a plurality of threads. The threads are arranged substantially next to one another and / or parallel to one another. This allows material to pass between the threads of the thread system inside the foil insert. By a plurality of threads a sufficient stability of the stiffening elements is made possible. The threads may in particular be arranged both linearly parallel and grid-like.

The threads of the thread system are connected to each other at their end regions. In particular, at least one elongated, preferably textile connecting web serves in each case for this purpose. For example, the thread ends can be interwoven or sewn together for this purpose, or permanently connected in other ways. More preferably, each connecting web is embedded in at least one intermediate piece. The threads are led out of the intermediate piece. Preferably, the permanent connections of the intermediate piece, in particular the welds, each extend in the free areas between the individual threads. The connecting webs prevent slippage of the threads. The connecting webs are held by the welds in the spacers.

The above-described object is also achieved by a flexible bulk material container according to claim 13. In particular, the film insert according to the invention is used according to the above descriptions in the bulk material container. The foil insert is preferably just the inner dimensions of the Bulk container formed accordingly. Thus, the wall and bottom of the film insert are inside of those of the flexible bulk goods container. Due to the stiffening elements, the foil insert at least substantially maintains its external shape even when filling with material. Thus, the surrounding flexible bulk material container can essentially retain its outer shape.

Fig. 1

eine perspektivische Ansicht eines flexiblem Schüttgutbehälters,

Fig. 2

einen erfindungsgemäßen Folieneinsatz für einen flexiblen Schüttgutbehälter,

Fig. 3

eine horizontale Schnittansicht des Folieneinsatzes gemäß Fig. 2,

Fig. 4

eine horizontale Schnittansicht eines in einen flexiblen Schüttgutbehälter eingestellten erfindungsgemäßen Folieneinsatzes,

Fig. 5

ein Fadensystem mit Verbindungsstegen,

Fig. 6

eine Detailansicht des Farbensystems der Figur 4 mit Zwischenstücken,

Fig. 7

eine weitere Detailansicht eines Verbindungsstegs mit Zwischenstück gemäß Fig. 6,

Fig. 8

eine alternative Ausführungsform eines den Verbindungssteg der Fig. 6 umgebenden Zwischenstücks, und

Fig. 9

eine Detaildarstellung eines Zwischenstücks gemäß der Ansicht der Fig. 3.

Preferred embodiments of the invention will be described in more detail with reference to the drawings. In these show:

Fig. 1

a perspective view of a flexible bulk container,

Fig. 2

a film insert according to the invention for a flexible bulk material container,

Fig. 3

a horizontal sectional view of the foil insert according to Fig. 2 .

Fig. 4

a horizontal sectional view of a set in a flexible bulk material container according to the invention foil insert,

Fig. 5

a thread system with connecting webs,

Fig. 6

a detailed view of the color system of FIG. 4 with spacers,

Fig. 7

a further detail view of a connecting web with spacer according to Fig. 6 .

Fig. 8

an alternative embodiment of the connecting web of Fig. 6 surrounding intermediate piece, and

Fig. 9

a detailed view of an intermediate piece according to the view of Fig. 3 ,

In Fig. 1 is a perspective view of a flexible bulk container 10 is shown. Such a bulk material container has a wall 11, which is formed in the present embodiment of four wall sections 12, 13, 14, 15.

The area between the upper side edges 16 of the wall 11 is provided for filling the flexible bulk material container 10 as an opening 17. In an alternative embodiment, a permanently or releasably secured, not shown here Cover be provided to make the flexible bulk material container 10 closable. Such a lid may for example also have a single or multiple closable filling opening such as a filler neck.

A bottom 18 completes the wall 11 in the region between the lower side edges 19 of the wall 11 on the underside. This floor 18 is in the Fig. 1 not explicitly shown, but for example in the Fig. 4 to be seen as the bottom-side surface 18. The wall sections 12, 13, 14, 15 of the wall 11 and the bottom 18 thus form the fillable bulk material container 10.

For ease of transport and ease of handling, the flexible bulk material container 10 has four lifting loops 20. These are arranged at the corner regions between in each case two of the wall sections 12, 13, 14, 15. The lifting loops 20 are here permanently connected to the wall 11 via vertical seams 21. By means of the lifting loops 20, the flexible bulk material container 10 can be lifted and implemented by crane, for example.

In the Fig. 2 an inventive film insert 30 is shown. This foil insert 30 serves to be set, for example, in the flexible bulk material container 10. This is for example in Fig. 4 shown.

The film insert 30 also has a wall 31, which also includes four wall sections 32, 33, 34 and 35 here. The top 37 is formed in the present case, as well as the bottom 38 between the lower side edges 39 is substantially closed.

Both top and bottom, however, here filler neck 40 and 41 are provided. These serve for filling or emptying of the foil insert 30. In order to allow emptying through the lower filler neck 41 in this case, the associated flexible bulk material container 10 must also have a corresponding bottom-side opening.

So that the foil insert 30 and thus the flexible bulk material container 10 containing it substantially retains its shape even when material is filled, stiffening elements 42, 43, 44 and 45 are provided. In the present case, the stiffening elements 42, 43, 44, 45 each connect two adjacent wall sections 32, 33, 34, 35 over the corner. For this purpose, the stiffening elements 42 are 43, 44 and 45, respectively each with a side edge 46 with one of the wall sections 32, 33, 34, 35 and with an opposite side edge 47 with a further, here adjacent wall section 32, 33, 34, 35 permanently connected.

The stiffening elements 42, 43, 44, 45 are formed in the present case as a thread system 48. Such is exemplary in the Fig. 5 shown. It has a plurality of threads 49, which are connected at their end portions in connecting webs 50 and 51 end to each other. These connecting webs 50 and 51 can be, for example, woven textile elements which can serve as side edges 46 and 47 of a respective reinforcing element 42, 43, 44, 45.

The connecting webs 50 and 51 form two elongated support for the threads 49 running therebetween. By fixing the connecting webs 50 and 51 to a wall section 32, 33, 34, 35, the wall 31 can be secured against buckling of the foil insert 30 when it is filled. The thread system 48 absorbs the tensile forces acting on the corner.

For fastening the thread system 48 to the wall 31 as one of the stiffening elements 42, 43, 44, 45 connecting elements or intermediate pieces 52 are used. Here, the intermediate pieces 52 are foil sections of the same material as the wall 31 of the foil insert 30. As a result, the intermediate pieces 52 are perfectly connectable to the wall 31, for example by welding. The corresponding weld seams between the intermediate piece 52 and the wall 31 of the foil insert 30 extend in each case continuously and uninterruptedly along the entire longitudinal extension of the intermediate piece 52.

The intermediate pieces 52 are in particular in the Fig. 6 to Fig. 8 good to see. In Fig. 6 and Fig. 7 the intermediate pieces 52 are each made as a first embodiment of a piece of material or foil piece. For this purpose, a film strip is provided in each case, whose length corresponds approximately to that of the connecting web 50, 51 to be connected.

The material of the intermediate piece 52 is positioned with one half 53, for example under the connecting web 50, 51. Then it is folded or folded lengthwise such that a second half 54 comes to lie on the connecting web 50, 51. Thus, the two folded halves 53 and 54 are located nationwide. The respective connecting web 50 or 51 is then in between.

For example, by welding or gluing the two halves 53 and 54 together they are permanently connected. In this case, in particular at least one weld 55 is formed, which runs the length of the intermediate piece 52 to. To reinforce two parallel welds 55 are each formed on one side of the connecting web 50, 51 here.

In the second embodiment of Fig. 8 two halves 53 and 54 are also at least partially superimposed on each other as separate pieces of material not connected to each other before welding. By welding, they are also connected together. Depending on the application, one of the two halves 53 or 54 may also be formed significantly longer than the other, in order to allow welding only with the wall 31.

By the connecting webs 50, 51 or any grid nodes or cross struts of a network, a complete slipping of the threads 49 and thus releasing the respective stiffening element 52, 53, 54, 55 is prevented in each case. The connecting webs 50, 51 or even the grid nodes are held by the welds 55 in the intermediate pieces 52, although they are partially interrupted.

In any case, the protrusion 56 formed on the side facing away from the threads 49 of the intermediate piece 52 serves to be connected to the wall 31 of the foil insert 30. Due to the material equality or at least similarity of material, a permanent connection can take place, in particular by welding. This attachment is in detail in Fig. 9 shown. <B> LIST OF REFERENCES: </ b> 10 flexible bulk material container 44 stiffener 11 wall 45 stiffener 12 wall section 46 side edge 13 wall section 47 side edge 14 wall section 48 thread system 15 wall section 49 thread 16 side edge 50 connecting web 17 opening 51 connecting web 18 ground 52 connecting piece 19 side edge 53 half 20 lifting loop 54 half 21 seam 55 Weld 30 film insert 56 Got over 31 wall 32 wall section 33 wall section 34 wall section 35 wall section 36 side edge 37 top 38 ground 39 side edge 40 filler pipe 41 filler pipe 42 stiffener 43 stiffener

Claims (13)

Foil insert for a flexible bulk material container (10) for storing and transporting filled solid, preferably granular material, having a bottom (38) and a wall (31) with a plurality, preferably four wall sections (32, 33, 34, 35), with one preferably with cuboidal basic shape, wherein bottom (38) and wall (31) are preferably formed of the same material and wherein bottom (38) and wall (31) are permanently connected to each other, preferably by at least one weld and / or gluing, and at least an internally extending, flexible stiffening element (42, 43, 44, 45) for stabilizing the shape of the wall (31), wherein the stiffening element (42, 43, 44, 45) with two adjacent wall sections (32, 33, 34, 35 ), characterized in that the at least one stiffening element (42, 43, 44, 45) is connected to the wall sections (32, 33, 34, 35) by means of an intermediate piece (52). Foil insert according to claim 1, characterized in that the intermediate piece (52) is formed of the same material as the wall (11) Foil insert according to claim 1 or 2, characterized in that wall (31) and intermediate piece (52) are permanently connected to each other, preferably by at least one weld and / or bonding, in particular cohesively, wherein the cohesive connection is formed in particular continuously without interruption. Foil insert according to one of the preceding claims, characterized in that the intermediate piece (52) and the stiffening element (42, 43, 44, 45) are permanently connected to each other, preferably by at least one weld and / or gluing, wherein intermediate piece (52) and stiffening element (42, 43, 44, 45) are formed in particular of different materials. Foil insert according to one of the preceding claims, characterized in that the intermediate piece (52) is multi-layered, in particular double-layered, wherein the stiffening element (42, 43, 44, 45) is introduced between two of the layers. Foil insert according to one of the preceding claims, characterized in that the intermediate piece (52) is integrally formed, preferably by folding several layers, in particular two layers. Foil insert according to one of the preceding claims, characterized in that the intermediate piece (52) is composed of several pieces, in particular of the same material. Foil insert according to claim 5, 6 or 7, characterized in that the layers of the intermediate piece (52) are permanently connected to each other, preferably by at least one weld (55) and / or bonding. Foil insert according to one of the preceding claims, characterized in that the stiffening element (42, 43, 44, 45) as a grid and / or thread system (48), in particular thread network, is formed, with opposite and a wall portion (32, 33, 34, 35) associated end portions or side edges (46, 47) of the stiffening element (42, 43, 44, 45) are each embedded in one of the intermediate pieces (52). Foil insert according to one of the preceding claims, characterized in that the layers of the intermediate piece (52) by welds (55) are connected, which in recesses of the stiffening element (42, 43, 44, 45) run, preferably in areas between grid struts of the grid and / or threads (49) of the thread system (48). Foil insert according to one of the preceding claims, characterized in that the thread network (48) has a plurality of threads (49), wherein the threads (49) are arranged substantially next to one another and / or in parallel. Foil insert according to claim 11, characterized in that the threads (49) of the thread system (48) are interconnected at their end regions, in particular by an elongated textile connecting web (50, 51), wherein preferably each of the connecting webs (50, 51) in the stiffening element (42, 43, 44, 45) is embedded and in particular the threads (49) are led out. Flexible bulk material container with a foil insert (30) according to one of the preceding claims.

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