FI90331C - Method of packing bulk material in large packagings and large packagings intended for bulk packing - Google Patents

Description

90 331

Method for packing bulk material in a large package and a large package for bulk material

The invention relates to a method for packing bulk goods in a large package.

The invention relates to a large package for myds bulk goods.

15 Box packaging or other rigid packaging is used for packing, storing and transporting bulk goods. Box packages consist of corrugated cardboard boxes. The corrugated box is usually equipped with an inner bag. Such a package has a rectangular shape when filled and thus utilizes the transport platform to the maximum, although the package as such is potassium.

Large bags are also used for packing, storing and transporting bulk goods. The big bag is cheaper than a box pack, but its un -... 25 point is its round shape when filled, which makes it less favorable for transporting the pallet than a box pack.

It is an object of the invention to provide a method for packaging bulk goods in a flexible package and a flexible package for bulk goods which, when filled, assumes an almost rectangular shape and in which standard pallets (e.g. EUR, FIN pallets) can be used as a base. In this way, the maximum use of space in a box package and the low price of a flexible package can be combined. At the same time, the recycling of the used packaging can be better handled, because no sorting is required, but the flexible packaging is recovered as it is and the standard pallet is returned to circulation. In the case of a box package, the box, inner bag and tray must be separated and recovery must be carried out through three different systems.

The method according to the invention for packing bulk goods in a large package is characterized in that 90901 (a) an inner package with a support structure made of a flexible material is placed on a base, (b) the inner package is filled with bulk goods, during which the inner package is applied and the substrate is surrounded by an outer package of plastic core, forming a stable transport package.

The large package for bulk material according to the invention is characterized in that the inner package is an inner bag of flexible material with a support structure which is placed on a base during filling with bulk material, preferably by hanging or supporting above the base, and that the outer package is stable outer packaging of plastic material.

20

In the method according to the invention, it is realized to use a large package consisting of an inner package made of a flexible cheap material and an outer package surrounding it, which gives the large package sufficient strength. As the flexible material of the inner package, which has a relatively low stiffness, plastic films, paper or fabrics, for example, can be used. The flexible package is hung or supported on a suitable platform, such as a pallet, during the filling of the bulk material. After filling in bulk, the inner package with a possible support structure is bonded to the substrate, e.g. with a stretch film 30, so that a sturdy whole, i.e. a large package, is formed. The width of the stretch film is not a significant factor. The width of the stretch film can be a conventional width, such as about 500 mm, but a full-length stretch film of the entire height of the inner package can also be used as the stretch film. Instead of a tension film, a ki-35 cross hood or shrink hood can of course also be used.

The support structure can be a separate support structure or part of the inner package also functions as a support structure.

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The large package according to the invention is characterized in that the inner package of the large package withstands the stresses imposed by the filling phase and that the circumference of the inner package filled with bulk material does not substantially increase at the beginning of the filling phase. It should be noted that during filling, the inner pack 5 may be slightly spread, i.e. deformed and applied to a rectangular shape, which is then easily surrounded by a stretch film to provide the final large pack.

The large packaging according to the invention makes it possible to recycle the used flexible packaging-10 materials. In addition, a pallet used in a large package can be stored and reused after the large package has been emptied.

The large package filled with bulk goods according to the invention is a sufficiently upright and functional unit that can withstand storage and transport well. The large package according to the invention can be easily lifted, e.g. in storage, by lifting the large package with the forks of the truck from the openings in the pallet.

20 The inner packaging, the outer packaging and the pallet form an assembly which is easily stackable and which does not substantially change shape during stacking and storage.

One of the most significant advantages of the invention is that the Large-25 package according to the invention can be made of a substantially smaller amount of material than a large big bag, because the lifting capacity required by the safety factor is not required, as is the case with large sacks with lifting loops.

4

The invention will be explained in detail with reference to some preferred embodiments of the invention shown in the figures of the accompanying drawings.

Figure 1 shows a cross-section of a preferred embodiment of the inner package of a large package according to the invention.

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Figure 2 is a cross-sectional view of another preferred embodiment of an inner package of a large package according to the invention.

Figure 3 shows a schematic side view of a preferred embodiment of a finished large package 5 according to the invention.

Figure 4 shows a schematic side view of another preferred embodiment of a finished large package according to the invention.

Figure 5 is a schematic side view of a third preferred embodiment of a finished large package according to the invention.

Figure 6 shows a schematic side view of a fourth preferred embodiment of a finished large package according to the invention.

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Figure 7 shows a schematic side view of a fifth preferred embodiment of a finished large package according to the invention.

In the embodiment according to Figure 1, the inner package is denoted by the reference number 11. The inner package 11 is provided with a support structure 12. In this embodiment, the support structure 12 and the inner package 11 placed outside it form a substantially rectangular whole.

The embodiment according to Fig. 2 is otherwise the same as the embodiment shown in Fig. 1, except that in the embodiment according to Fig. 2 the inner package 11 and the support structure 12 form a parallelepiped-shaped whole.

As best seen in Figure 3, the inner package 11 and the possible support structure 12 are placed on a suitable base such as a pallet 13. The lifting openings in the pallet 13 are indicated by the reference number 14. The inner package 11 is filled with bulk goods. thus an outer package 16, 35 surrounding the inner package 11 is formed, which gives the large package sufficient stability.

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The embodiment shown in Fig. 4 differs from the embodiment according to Fig. 3 in that in the embodiment according to Fig. 4 the inner package 11 is surrounded by a full-width stretch film 16a.

The embodiment shown in Fig. 5 is otherwise the same as the embodiment shown in Fig. 4, but in the embodiment according to Fig. 5, the full-width stretch film 16a is provided with a seam 17.

In the embodiment of Figure 6, the bulk-filled inner package 11 is surrounded by a tension or shrink hood 16b which forms the outer package of the large package.

In the embodiment according to Fig. 7, the inner package 11 filled with bulk material is surrounded by a so-called with a tension or shrink sock 16c forming the outer package of the large package.

In the large package according to the invention, it is preferable, but not necessary, to use a support structure 12. The purpose of the support structure 12 is that the inner package 11 filled with bulk goods better retains its "rectangular" shape.

On the other hand, the large package cannot be formed from the inner package 11 alone. Even if the inner package 11 is formed of a stronger material than usual, the inner package 11 can only withstand the stresses caused by filling, but such inner package 11 no longer withstands storage (handling).

Only some preferred embodiments of the invention have been described above, and it will be apparent to those skilled in the art that numerous modifications may be made to them within the scope of the inventive idea set out in the appended claims.

Claims (15)

6 c033l A method for packaging bulk material in a large package, characterized in that 5 (a) an inner package (11) of flexible material with a support structure (12) is placed on a base (13), (b) the inner package (11) is filled with bulk material, whereby during filling The inner package (11) is in the form of a substantially parallelepiped, the inner package (11) and the base (13) are surrounded by an outer package (16, 16a, 16b, 16c) of plastic material, forming a stable transport package. Method according to Claim 1, characterized in that the inner package (11) is suspended above the base (13). Method according to claim 1, characterized in that the inner package (11) is supported above the base (13). Method according to one of Claims 1 to 3, characterized in that the outer package (16) is formed by wrapping a stretch film strip 25 (15) around the inner package (11) and the base (13). Method according to one of Claims 1 to 3, characterized in that the outer package is formed from a full-width stretch film (16a). 30 Method according to one of Claims 1 to 3, characterized in that the outer package is formed from a full-width stretch film (16a) provided with a seam (17). 90 331 Method according to one of Claims 1 to 3, characterized in that the outer package is formed from a tension or shrink hood (16b). . Method according to one of Claims 1 to 3, characterized in that the outer package is formed from a tension or shrink sock (16c). Large package for bulk goods, consisting of an inner package (11) and an outer package (16, 16a, 16b, 16c), characterized in that the inner package (11) is an inner bag of flexible material with a support structure (12) which is placed on the base (13) during filling, preferably by hanging or supporting above the base (13), and that the outer package is an outer package of plastic material tightly surrounding the inner package (11) and the base (13) and providing sufficient stability. 15 Large package according to Claim 9, characterized in that the outer package (16) is an outer package formed by wrapping the inner package (11) around a stretch film strip (15). Large package according to Claim 9, characterized in that the outer package is a full-width tension film (16a) surrounding the inner package (11). Large package according to Claim 9, characterized in that the outer package is a full-width stretch film (16a) provided with a seam (17) surrounding the inner package (11). Large package according to Claim 9, characterized in that the outer package is a tension or shrink hood (16b) surrounding the inner package (11). A large package according to claim 9, characterized in that the outer package (16e) is a tightening sock surrounding the inner package (11). 35 90 331 Large package according to one of Claims 9 to 14, characterized in that the base (13) is a pallet (13) provided with lifting openings (14). 90331