EP1224133A1

EP1224133A1 - Method for filling containers

Info

Publication number: EP1224133A1
Application number: EP00964266A
Authority: EP
Inventors: Frieder Heydenreich; Rainer Neumann; Michael BÖDIGER; Axel Bandura
Original assignee: Bayer AG
Current assignee: Covestro Deutschland AG
Priority date: 1999-10-13
Filing date: 2000-10-02
Publication date: 2002-07-24
Anticipated expiration: 2020-10-02
Also published as: JP2003511317A; CN1241805C; DE50010247D1; CN1379727A; EP1224133B1; KR20020060954A; HK1051024A1; DE19949432A1; WO2001027000A1; AU7524500A

Abstract

The invention relates to a flexible, cuboid big bag , consisting of a highly durable fabric for fine-particled bulk goods. The side edges (2) are reinforced by an interior supporting fabric (1) and the base has an additional, highly durable sliding surface (10).

Description

Process for filling containers

The present invention relates to a method for the optimized loading of containers with free-flowing solids.

For the transport of solids, high requirements with regard to security (e.g. load securing, storage security), quality and economy are required.

For example, the so-called big bags show insufficient stability and dimensional stability of the big bags during packaging and transport in conventional sack-like containers. As a result, additional measures for bagging, loading and load securing are required. The low dimensional accuracy also increases the risk that the big bags will be damaged by internal tension or by "rubbing against each other" during loading and transport (safety risk) and that unusually high pressures will be caused by products that are sensitive to pressure and / or friction. An increased proportion of dust significantly increases the risk of dust explosion in the case of substances hazardous to dust explosion or only arises when the product escapes due to bursting or damage to the big bag. Insufficient dimensional stability and stability of the big bags can also pose risks when storing the big bags. For example, a safety risk can result from falling or falling. Optimized packing of the big bags also increases the cost-effectiveness of storage.

Furthermore, the usual stacking of the big bags on a pallet limits the possibility of stacking. For example, in the event that bisphenol-A prills are to be packaged, in a conventional 20-foot-box container (20'-box containers) (ISO 22G0 and the following) no conventional weight units, for example conventional ones, can be used 1000 kg big bags including pallet stacked and requires a lot of load securing. In addition, a large part of the loading volume is not used. Even when stacking a conventional 500 kg big bag including a pallet that corresponds to the usual weight units, and a stack of one that corresponds to the usual weight unit, for example a conventional 1000 kg big bag including a pallet, a high level of load securing is required; part of the loading volume is not used.

The object of the present invention is therefore to provide a method for the optimized filling of containers with free-flowing solids which does not have the disadvantages of the prior art.

This object is achieved by the use of containers according to claim 1.

The invention relates to a cuboid foldable container made of high-strength fabric for finely divided bulk goods with a filler spout and possibly an additional outlet spout, in which the container has a reinforcement of the side edges by an inner support fabric attached laterally to the edges, characterized in that the bottom of the container an additional high strength

Has sliding surface.

The sliding surface preferably consists of reinforced fabric material, in particular fabric based on polypropylene, polyethylene or PVC.

Particularly preferably, the sliding surface in the form of a grip edge projects beyond the outside of the container on at least one side of the container.

In a further preferred form of the container, the grip edge protrudes from the floor at an angle to the floor surface, in particular by means of a correspondingly brought seams on the handle edge, which cause the handle edge to stand up or by means of a plastic insert in the handle edge.

Also preferred is a container in which the support fabric is attached at an angle of 45 ° +/- 5 ° to the side walls.

The supporting fabric particularly preferably has a plurality of passages for the bulk material which are arranged one above the other, the passages in the lower region having an oval, lying cross section. This ensures even filling of the triangular cavity behind the supporting fabric.

The invention also relates to a stack of containers comprising containers according to the invention containing bulk material.

The stack of containers is preferably constructed in such a way that between one another

Binding the stack additionally two especially slightly curved sliding plates made of plastic, in particular polyethylene or polyvinyl chloride, are attached. This further simplifies the creation and removal of the stack.

In this case, the upper sliding plate particularly preferably has an opposite curvature to the lower sliding plate. This allows forks of forklift trucks to easily intervene in the space between the sliding plates.

The invention furthermore relates to a container which is completely filled with a stack of containers according to the invention.

The invention also relates to a method for filling containers with free-flowing solids, characterized in that the free-flowing solids are packaged in the aforementioned container according to the invention and the containers are stacked in the container. Additional sliding plates with opposite, slight curvature are preferably inserted between the stacked containers.

The lowest containers are particularly preferably underlaid with an additional sliding plate.

The free-flowing solids to be used according to the invention have bulk densities of preferably 300 to 900 kg / m ³ , particularly preferably 400 to 800 kg / m ³ and very particularly preferably 500 to 700 kg / m ³ .

The containers according to the invention (hereinafter also referred to as big bags) are sack-like containers. They can consist of any textile fabric. They preferably consist of synthetic fiber fabric.

The method and the container according to the invention have numerous advantages. They are characterized by a high level of security, for example good load securing and high storage security. In addition, they have a high level of economy, since the free-flowing solids can be packed very densely (so-called dense pack system).

The free-flowing solids to be packaged according to the invention can, for example, be powder (e.g. flour or product dust), semolina (e.g. semolina, wheat), pearl-shaped (e.g. prills from e.g. bisphenols), flaky (e.g. flakes from e.g. bisphenols), or granular. The granules can be cubic, lenticular, spherical or cylindrical, for example.

Such granules are, for example, plastic granules such as e.g. Granules made from polycarbonate, from acrylonitrile styrene polymers, ABS, from polyamides, from polyolefins and from other plastics.

Free-flowing solids which can preferably be used according to the invention are those made from

Bis (4-hydroxyaryl) alkanes (bisphenols). This is particularly interesting Example of bisphenol A (BPA) important on an industrial scale. The preferred form of the BPA solid to be packaged is the BPA prills. Prills are spherical or nearly spherical solid particles. The diameter of the balls is typically 0.1 mm to 1 cm.

Combined systems consisting of big bags and a transport base are usually used for loading, unloading and storage, e.g. a pallet. However, this has the disadvantage that valuable loading volume is lost when using pallets. There is also a risk that the big bags will slip or slip off the transport base. If transport stands with a low or very low height are used, more and more loading volume can be used, but there is still the risk of the big bags sliding off the transport stand.

It has now also been found that the advantage of the optimal loading volume can be combined with integrated gripping and handling devices (grip edge) on the big bag with the prevention of the big bags sliding or slipping off the transport base.

In particular, it is the integrated gripping and handling device

(Grip edge) around a firm, preferably slidable layer which is firmly connected to the big bag at the bottom of the big bag, for example sewn, and which extends beyond this bottom at least on one edge so that it can be gripped with suitable devices, so that the big bag can be pulled onto or off an industrial vehicle in this way, for example. With the integrated gripping and

Handling device can also be a plastic plate, for example.

The integrated gripping and handling device can be made of different materials. For example, it can be made of the same material as the actual big bag. In addition, coated fabrics, e.g. Glass fiber or plastic fabrics coated with a ready-to-slide material, such as Teflon, are used. Plastics, for example reinforced plastic films, are also suitable.

The integrated grip edge is preferably connected to the big bag in such a way that even with improper handling, e.g. Tearing off or tearing open the handle edge of the actual big bag is not damaged. This can significantly reduce an accident or safety risk due to product leakage. This is achieved, for example, in that the integrated grip edge is connected to the big bag only at the edges of the big bag bottom, e.g. sewn, is.

By combining the container according to the invention with excellent stability and dimensional stability and integrated gripping and handling device on the container, an optimal and flush filling of the container is now possible (dense pack system), whereby inherent load security is achieved, and that

Security risk is reduced. In addition, the product can be contaminated with environmental influences, e.g. by flush sealing and the optimized packaging of the container. Oxygen and moisture, reduced, since the specific surface (over the big bag walls) is significantly reduced compared to the environment. The reduced contamination leads to improved storage and product stability. Furthermore, the economy of transport is improved through the optimized utilization of the loading volume.

A method for filling a conventional 20 'box container (ISO 22G0 and the following) with filled ones is therefore particularly preferred

Containers with a total weight of 20 t, characterized in that the bulk goods preferably correspond to the customary weight units, e.g. 500 and 1000 kg of big bags according to the invention are filled and loaded.

For example, the following dimensions are available for 1000 kg big bags: External length: 1060 mm (+/- 10 mm)

External width: 1060 mm (+/- 10 mm)

External height: 1170 mm (+/- 20 mm).

The big bags according to the invention are characterized in that the stability and dimensional stability of the big bags is improved by the additional inner support fabric.

The big bags are characterized in particular in that the additional inner support fabric is provided with preferably elliptical openings, preferably a circular opening as the uppermost opening of the inner support fabric, which in turn are preferably evenly distributed. These openings are used, for example, to fill the big bags quickly and evenly. The longitudinal axis of the elliptical openings is preferably parallel to the bottom of the big bag.

The integrated gripping and handling device on the container can be used safely and economically thanks to special designs of the floor vehicles that transport the big bags. Also not integrated gripping and handling devices on the big bag, e.g. A combination of big bag and suitable gripping and handling devices can be used through the special designs of the floor vehicles.

Conventional hall vehicles are characterized by a stem that has the greatest possible stability for the big bag / transport base system. The resulting broad design of the stem has the disadvantage that the Dense Pack System (DPS) can damage the neighboring big bag, and there is also the risk that two big bags will be gripped, especially when unloading, which means a high risk of damage one or both of the big bags, for example by falling or falling down. A suitable device for floor vehicles for handling big bags was found, preferably with an integrated grip edge. This device is also suitable for corresponding gripping and handling devices that are not integrated in the big bag, for example a combined system consisting of a big bag and a transport base.

The suitable device for industrial vehicles is characterized by its optimized geometry, which enables safe handling during loading and unloading. Here, geometry and dimensions are selected so that, on the one hand, the Dense pack System (DPS) prevents damage to the neighboring big bag and that

Risk that two big bags are gripped, especially when unloading, which means a high risk of damage to one or both big bags, for example due to falling or falling, is significantly reduced, on the other hand, the contact area for the big bag on the floor vehicle is designed in this way that safe and economical loading and unloading is possible. In addition, the device of the floor vehicles is characterized by a low frictional resistance, so that the newly developed big bag with its preferably integrated gripping and handling device can be pulled safely and quickly onto the floor vehicle device or from the floor vehicle device. Low frictional resistance is achieved, for example, through polished surfaces or additional ones

Tools, e.g. Poly (tetrafluoroethylene) spray achieved. In addition, the suitable device for floor vehicles is characterized by a movable gripping device which enables safe and quick transfer to the floor vehicle device or from the floor vehicle device. This gripping device can be hydraulically controlled, for example, by the operator.

The following procedure for pulling the big bag with preferably integrated gripping and handling device onto the floor vehicle equipped according to the invention can be used, for example. A movable industrial vehicle device with a gripping claw is moved to the edge of the loading area of the industrial vehicle, pulled from the edge of the big bag onto the supporting surface with a preferably integrated gripping and handling device. The gripping claw grips the grip edge, then the big bag with the integrated grip edge is pulled onto the support surface of the industrial vehicle. to

When the big bag on the support surface is transported from the floor vehicle to a container, for example, the movable floor vehicle device with gripping claw pushes the big bag together with the integrated grip edge down from the support surface.

Of course, other large containers, preferably containers, can also be filled with this technology, for example 40 'box containers (ISO 42G0 and the following).

The present invention is explained below by way of example with reference to four figures, without being restricted to these.

example

Fig. 1 shows a plan view with a view to the bottom of the big bag a cuboid big bag with a square bottom surface. Sewn from the additional inner fabric (1) are sewn into the big bag. These webs thus separate a central cavity from four small cavities that are located above the edges of the big bag.

FIG. 2 shows the big bag from FIG. 1 in a perspective view. The direction of view is directed from the inside of the big bag to one of the four webs of additional inner support fabric and to the edge of the big bag behind it. You can see two side walls of the big bag (2), a sheet of additional inner support fabric (1), in which there is a circular hole as the top opening and elliptical holes (3, 4, 5, 5a). A strap (6) is also attached to the top of the big bag.

3 shows a possible arrangement for optimally filling a container (7) with the big bags (8) according to the invention. The container is shown open at the top. Two layers of the big bags according to the invention can be seen one above the other. For the sake of clarity, the hidden big bags and the hidden ones

Big bag lines not shown.

Fig. 4 shows the preferred embodiment of the big bag (9) according to the invention with holding loops (6) and four webs of additional inner support fabric (1) with holes (3) therein. The distinctive feature of the preferred

The embodiment of the big bag is the slidable thin plastic plate (20) which is sewn firmly to the bottom of the big bag.

Claims

claims

1. Cuboid, foldable container made of high-strength fabric for finely divided bulk goods with a filler spout and, if necessary, an additional outlet spout, in which the container has a reinforcement of the side edges by an inner support fabric attached laterally to the edges, characterized in that the bottom of the container has an additional has high-strength sliding surface.

2. Container according to claim 1, characterized in that the sliding surface consists of reinforced fabric material, in particular fabric based on polypropylene, polyethylene or PVC.

3. Container according to claim 1 or 2, characterized in that on at least one side of the container the sliding surface in the form of a grip edge protrudes beyond the outside of the container.

4. Container according to claim 3, characterized in that the grip edge protrudes from the floor at an angle to the bottom surface, in particular by means of appropriately attached seams on the grip edge or plastic insert in the grip edge.

5. Container according to one of claims 1 to 4, characterized in that the supporting fabric is attached at an angle of 45 ° +/- 5 ° to the side walls.

6. Container according to one of claims 1 to 5, characterized in that the supporting fabric has a plurality of passages arranged one above the other for the bulk material, the passages in the lower region having an oval, lying cross section.

7. Stack of containers made of containers containing bulk material according to one of claims 1 to 6.

8. A stack of containers according to claim 7, characterized in that between the stacked containers of the stack there are additionally two, in particular, slightly slipped plastic sliding plates, in particular polyethylene or polyvinyl chloride.

9. stack of containers according to claim 8, characterized in that the upper sliding plate to the lower sliding plate has an opposite curvature.

10. Container completely filled with a stack of threads according to one of claims 7 to 9.

11. A method for filling containers with free-flowing solids, characterized in that the free-flowing solids are packaged in containers according to one of claims 1 to 7 and the containers are stacked in the container.

12. The method according to claim 11, characterized in that additional sliding plates with opposite, slight curvature are inserted between the stacked containers.

13. The method according to any one of claims 11 or 12, characterized in that the lowermost containers are underlaid with an additional sliding plate.