Inliner with an outlet hose, composite package with an inliner of this type, and method for emptying the inliner
Patent Information
- Application Number
- PCT/EP2026/055093
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-02-28
- Filing Date
- 2026-02-25
- Publication Date
- 2026-09-03
Smart Images
Figure EP2026055093_03092026_PF_FP_ABST
Abstract
Description
[0001] Inliner with a discharge hose, composite package with such an inliner and method for emptying the inliner
[0002] Description
[0003] Reference to related applications
[0004] The present application refers to and claims priority of German patent application 102025 107650.2, filed on 28.02.2025, the disclosure content of which is hereby expressly made the subject matter of the present application in its entirety.
[0005] Field of invention
[0006] The invention relates to an inliner provided with a drain hose having the features of claim 1, a composite package having the features of claim 8 and a method for emptying the inliner having the features of claim 9.
[0007] State of the art
[0008] Transport containers for liquids, pastes, or free-flowing goods are made of liquid-tight plastic bodies, which are usually pre-molded. For transport, these containers are placed upright on a pallet within a cage or sheet metal casing. Intermediate Bulk Containers (IBCs) are used in industry and commerce as an extremely economical and cost-effective means of transporting liquids and pastes. They consist of a sturdy cage into which a blow-molded plastic tank, equipped with at least one, and usually several, filling and emptying valves, is inserted. These transport containers typically have volumes ranging from 500 or 1000 liters up to 1800 liters or even more. For the purposes of this document, these transport containers are collectively referred to as "outer containers."This term includes not only the aforementioned transport containers, but also other outer containers, such as containers for use in other tank and transport areas, which may, for example, be made of stainless steel. In principle, an outer container made of other materials can also be used according to the invention. BC transport containers are filled, for example, with paints, pastes, acids, alkalis, oils, and other products of the chemical, food-producing, medical, and pharmaceutical industries for transport to the users.
[0009] It is also known to provide a thin-walled, flexible, and, for example, essentially tubular film as an inner liner within such an outer container. Such inner liners are called inliners or film inliners, which will be referred to as "inliners" in these documents.
[0010] Since outer containers are typically reused and, depending on the application, are contaminated by the contents, it is usually necessary to thoroughly clean the container, including all fittings, after emptying it, without an inner liner, before refilling. This is done manually with pressure washers and steam jets or with appropriate automated cleaning systems. The cleaning process is usually very water-intensive and generates a large amount of wastewater, some of which must be treated and disposed of. This cleaning process and the disposal of the cleaning fluids are very complex and costly and are subject to strict regulations, which are also constantly being tightened. This cleaning is often carried out at specially equipped stations. This requires transport capacity for the delivery of the contaminated containers and their return transport to the filler.
[0011] Instead of cleaning the outer container, it can be fitted with liners that are flexible and form a tight inner lining. These liners can be removed and recycled after use, or, if sufficiently contaminated, thermally recycled. Due to the high energy content of the plastics, this thermal recycling is recommended.
[0012] DE 38 18721 A1 discloses a container for a fluid with a filling and dispensing opening and an expandable, fluid-fillable liner inside the container. The liner seals the fluid against both the inner walls of the container and the inner surfaces of the filling and dispensing opening, isolating it from them. When empty, the liner can be pulled out through at least one of the two openings. Once inserted into the container, the two ends of the liner simultaneously form a seal for replaceable components, e.g., for closing, removing, and emptying, thus preventing contact between the fluid and the container material. One end of the liner is cut off for dispensing.The exposed edges of the liner are then folded over the edges of the openings on the container, so that the inside of the liner is completely sealed against the inner walls of the container and the inner walls of the openings. A cylindrical section with a mating thread for a screw cap is then fitted over the folded-over part of the liner. While this creates a tight seal between the liner and a valve insert in a side wall of the container, the valve insert and valve are still contaminated by the fluid and must be cleaned.
[0013] From DE 202014 105594 U1, an inner liner for insertion through an opening of a transport container is known, wherein the liner comprises a filling adapter and a drain adapter. These adapters can be attached in the area of a filling opening and a drain opening of the transport container. The adapter and liner form a prefabricated unit. They are attached to the transport container via connection elements provided on the container, into which the adapters are threaded and then clamped with the end caps or the drain valve.The inner liner features an unfolding aid that connects or holds two separated sections of the inner liner at a defined distance from each other before installation in the liquid container. This aid is designed to detach, tear, or break at least on one side when unfolded within the liquid container. This allows the opening sequence of the inner liner to be precisely controlled.
[0014] US 10,112,820 B1 discloses a tap device for a beverage dispensing container and a container lining device with a tube, wherein the container has a connection device and comprises a main body with a first surface and a connecting device for connecting to the connection device. The container further comprises a lid with a second surface and a closed and an open position, wherein in the closed position the first surface is pressed against the second surface such that the lid and the main body form a distal passage for holding the tube with a centerline. The centerline defines three points that do not lie on a straight line. In the open position, the first surface is not pressed against the second surface.Furthermore, the container features a valve assembly connected to the main body to selectively close a tube extending through the distal passage.
[0015] From EP 2964540 B1, a pallet container and a method for folding an liner into the container are known. The liner can be easily folded into the container. Excess gas escaping from the transported goods can be vented via a degassing port. In the area of the bottom fitting, a flexible corrugated tube with numerous lateral bores is provided to improve the emptying of the transported goods, allowing the container to be almost completely emptied. The tube is screwed to the filling and emptying fitting at the bottom of the container, independently of the liner.
[0016] The earlier, subsequently published WO 2025 / 056673 A1 discloses an liner for receiving contents and for insertion through an opening in the wall of a transport container. The liner is operatively connected to forming rods that, similar to the principle of an umbrella, open with the liner inside the transport container when the liner is inserted, in order to position the liner securely and cleanly within the container. When the liner is removed, the forming rods fold back together to allow the emptied and now contaminated liner, along with any residual liquid, to be extracted through the filling opening of the transport container.
[0017] The common feature of current technology is that it is very complex to equip the outer container and especially the associated emptying fittings with a liner in such a way that it not only fits optimally against the inner walls of the container but also protects the fittings from contamination.
[0018] Description of the invention
[0019] Starting from this prior art, the object of the invention is to provide an inliner, a composite package provided with an inliner, and a method for emptying an inliner arranged in a container, wherein the corresponding fittings are also protected from contamination. This object is achieved by an inliner having the features of claim 1, a composite package having the features of claim 8, and a method for emptying such an inliner having the features of claim 9.
[0020] Such an liner has a discharge hose designed to be positioned in a valve at the outlet of the outer container and to penetrate the valve, at least during emptying. When fitting the outer container with an liner to which such a discharge hose is attached, the liner is preferably inserted into the outer container with the discharge hose leading. Using a suitable insertion aid, preferably a cord or rope attached to the discharge hose, the discharge hose is pulled through the open valve of the outer container and positioned in the valve, thus advantageously lining it against contamination. In this state, the discharge hose is positioned at the valve and within the flow path of the valve – preferably by means of the connection and closure elements already present on the valve, such as threads, valve flaps, or cross-sectional changes – and is preferably clamped, for example, by the valve flap.The liner is advantageously secured within the container against slippage, for example during filling, by the discharge hose welded to it. The discharge hose, clamped into the valve, thus provides stabilization for the liner.
[0021] The preferably specially shaped discharge hose has a discharge fitting designed to wrap around the hose at the outlet of the receiving container. The discharge fitting is positioned in the valve of the receiving container and clamped and / or sealed there by the valve. This advantageously prevents contamination of the valve, even during subsequent emptying, and also provides additional protection for the discharge area during transport. Furthermore, it advantageously ensures proper positioning of the discharge hose.
[0022] The outlet fitting has a central section between an inlet area proximally adjacent to the liner and an outlet area distal to the liner. This central section is designed to be clamped and / or closed by a valve closure element on the outer container, such as a valve flap or a hemisphere. Advantageously, this allows the outlet hose to be secured in the area of the valve in conjunction with the existing drain fittings on the outer container. This also facilitates easy emptying. For this purpose, the central section has a smaller cross-section and / or a thinner material thickness compared to the inlet area, thus making it easier to clamp the outlet hose in the area of the valve.
[0023] In a preferred embodiment, the discharge hose is connected to the liner via connections in the inlet area, thereby keeping the outlet of the outer container open, at least during filling. This advantageously prevents the discharge hose from closing during filling and also facilitates emptying the liner.
[0024] Preferably, a discharge area is provided on the discharge fitting, which is designed to protrude from the valve, at least when emptying the container, in order to be advantageously easy to operate. Preferably, the discharge area can also be routed through the outlet located behind the valve. Preferably, the end section of this discharge area can then be separated, or a detachable end cap can be provided there. This advantageously allows the discharge hose to be opened selectively, and contamination of the valve or the outlet can be avoided.
[0025] Preferably, the outlet area is designed to be guided, at least partially, by forming an inversion on the outside over the outlet located distal to the valve from the perspective of the liner. If an end cap is provided, it should be removed beforehand. This has the advantage of completely protecting the valve from contamination. At the same time, a hose for draining the contents can be advantageously attached to the external thread typically provided on the valve above the inversion.
[0026] Preferably, the central area can also have a reduced cross-section and / or a lower material thickness compared to the outlet area, in order to advantageously facilitate jamming of the outlet hose in the area of the valve.
[0027] A composite package is also suitable for solving the problem, containing such an inliner which has corresponding forming rods for unfolding the inliner within the outer container. The inliner is contained within an application hose that can be inserted through the filling opening of the outer container. This inliner has a discharge hose that can be used as the inliner's discharge opening and can be detachably positioned at an outlet of the outer container when inserted. The discharge hose is designed to be positioned in a valve at the outlet of the outer container and to pass through the valve, at least when the outer container is being emptied. This advantageously prevents contamination, particularly of the outer container's valve. Preferably, the discharge hose has a discharge fitting as described above. This provides the advantages mentioned above.
[0028] The aforementioned problem, in particular preventing contamination of the valve on a container, is advantageously solved by a corresponding method in which the discharge hose is inserted into the container. This can be done with the aid of a pulling element. The liner and discharge hose are inserted into the container using the application hose, with the pulling element ensuring that the discharge hose is positioned in the area of the container's outlet. There, the discharge hose is then arranged so that it can be clamped and / or closed by a valve closure element, such as a valve flap or a hemisphere.
[0029] Preferably, the discharge hose is equipped with a discharge fitting as described above, thereby achieving the aforementioned advantages.
[0030] In a preferred embodiment, to empty the liner located in the outer container, the outlet section, which can be fixed in the area of the valve, is first pulled out and then secured and closed by the sealing element in the area of the valve. After opening the outlet section, in particular by detaching its end cap – preferably outside the outer container and the valve – the outlet section can be at least partially pulled over the outer surface of the outer container's outlet. A hose for draining the contents can then preferably be attached to the valve's external thread. When the valve is opened, the liner can be emptied through the valve, optionally down to a residual quantity. If the outlet hose is then sealed, for example with a binding agent such as a cable tie, the liner can be removed from the outer container through its filling opening, optionally after removing the residual quantity.All of this can be achieved in such a way that neither contamination of the valve area nor of the surrounding container is advantageously avoided. Further advantages arise from the dependent claims and from the following description of exemplary embodiments.
[0031] Brief description of the characters
[0032] The invention will now be explained in more detail with reference to exemplary embodiments illustrated in the accompanying figures. These show:
[0033] Fig. 1 shows a partially cutaway three-dimensional view of a container with a pull rod inserted into it.
[0034] Fig. 2 shows a view of the outer container according to Fig. 1 with an expandable liner arranged in an application hose,
[0035] Fig. 3 shows a view of the outer container according to Fig. 2 with an application hose inserted therein and a pull cord pulled through the outlet of the outer container.
[0036] Fig. 4 shows a view of the outer container according to Fig. 3 with the liner opening, Fig. 5 shows a view of the outer container according to Fig. 4 with the liner open and the discharge hose pulled through the valve,
[0037] Fig. 6 shows an enlarged view in the area of the container outlet with the outlet hose pulled through it.
[0038] Fig. 7 is a representation according to Fig. 6, wherein the distal part of the outlet hose is inserted into the part of the valve in front of the flap in the valve of the reservoir; Fig. 8 is a representation according to Fig. 7, wherein the outlet is closed by means of a screw cap.
[0039] Fig. 9 shows a representation according to Fig. 6 with the front end of the outlet hose cut off,
[0040] Fig. 10 shows a representation according to Fig. 9 with the valve flap open,
[0041] Fig. 11 shows a representation according to Fig. 9, wherein the distal area of the outlet hose is overstretched in order to slip it over the external thread of the valve; Fig. 12 shows a three-dimensional sectional view in the area of the outlet hose arranged in the valve.
[0042] Fig. 13 shows a view of a discharge mold part usable as a discharge hose with a detached end cap,
[0043] Fig. 14 shows a schematic representation of the outlet mold part with the distal end turned inside out.
[0044] End, Fig. 15 a representation according to Fig. 14 through the valve cap narrowed central area of the outlet mold part,
[0045] Fig. 16 shows a representation of the container according to Fig. 6 with a hose flanged to the outlet,
[0046] Fig. 17 shows a representation according to Fig. 11 with the outlet hose tied off,
[0047] Fig. 18 shows a representation of the outer container according to Fig. 16 with the emptied, removable liner.
[0048] Detailed description of preferred embodiments
[0049] The invention will now be explained in more detail by way of example with reference to the accompanying drawings. However, the exemplary embodiments are merely examples and are not intended to limit the inventive concept to a specific arrangement. Before the invention is described in detail, it should be noted that it is not limited to the respective components of the device or the respective process steps, as these components and processes can vary. The terms used here are intended solely to describe particular embodiments and are not used restrictively. Furthermore, where the singular or indefinite articles are used in the description or in the claims, this also refers to the plural of these elements, unless the overall context clearly indicates otherwise.
[0050] Figures 1 to 5 show a container 12, which has been cut open at the front and side to allow a view into its interior. Such a container is, for example, a transport container for liquids, pastes, or free-flowing materials. These containers are typically made of liquid-tight plastic bodies, which are usually bias-molded. For transport, such containers are placed upright on a pallet within a cage or sheet metal casing. Intermediate bulk containers (IBCs) are used as transport vehicles for liquids and, for example, pastes. They consist of a sturdy cage into which a blow-molded plastic tank, equipped with at least one, and usually several, filling and emptying fittings, is inserted. These transport containers typically have volumes ranging from 500 or 1000 liters up to 1800 liters or even more.These transport containers are hereinafter referred to as "outer containers," as defined above. For filling, such outer containers 12 generally have a filling opening 12a and corresponding fittings at the outlet 20. These fittings generally include a valve 24 for opening and closing the outlet 20. In the prior art, butterfly valves or hemispherical / ball valves are most commonly used as valves.
[0051] Fig. 2 shows an inliner 10 received in an application hose 16. Also visible are forming rods 14, which are designed to stretch the inliner 10 inside the container 12 after it has been inserted into the outer container 12 and released by retracting the application hose, as is known from the earlier patent application WO 2025 / 056673 A1 with priority from 13 September 2023.
[0052] The composite assembly formed by the application hose 16, consisting of the liner 10 and the forming rods 14, has a discharge hose 10d at its lower end (as shown in Fig. 2). This discharge hose can be used as the discharge opening 36 of the liner 12 and, when inserted into the outer container 12, can be detachably positioned at an outlet 20 of the outer container. As can be seen particularly in Fig. 5, the discharge hose 10d is designed to be positioned in the valve 24 at the outlet 20 and to pass through the valve 24, at least when the outer container is being emptied. In Fig. 5, the material 40 has not yet been inserted into the outer container 12; however, at this point, the discharge hose 10d is already guided through the valve 24 to the outside.
[0053] In principle, the inliner 10 therefore has an outlet hose 10d which is designed to penetrate a valve 24 at an outlet 20 of the outer container 12 and to line the inside against contamination. This advantageously simple design allows the necessary conditions for emptying through the valve 24 to be met. At the same time, contamination of the valve 24 can be avoided.
[0054] As will be shown below with reference to Fig. 8, the discharge hose 10d is designed to be clamped and / or closed in the valve 24 by a closing element 24a, such as a valve flap or a hemisphere. This advantageously ensures that the discharge hose remains in position even during transport; furthermore, this is a prerequisite for protecting the valve against contamination by the contents 40.
[0055] Advantageously, the inliner 10 is simultaneously fixed and secured against slippage, e.g., during filling, within the outer container 12 by the outlet hose 10d welded to the inliner. The outlet hose 10d, clamped in the valve 24, thus stabilizes the inliner 10.
[0056] The 10d outlet hose and the 50 outlet fitting (which will be described later) are also suitable for use in larger valves or in hemispherical / ball valves. While in disc flap valves the outlet fitting is generally guided past the disc flaps, which are positioned transversely when opened, on one side, ball valves allow for an unobstructed and therefore freer passage of the contents.
[0057] The discharge hose 10d has a discharge fitting 50, which is shown in particular in Figs. 13 to 15. This discharge fitting 50 is designed to come into contact with the outlet 20 of the container 12 around the discharge hose 10d, as shown, for example, in Figs. 5 to 11.
[0058] As shown in Figures 14 and 15, the discharge hose 10d is connected to the liner 10 via connections 52 in the area of an inlet section 50a located proximally to the liner 10. These connections typically involve a fusion of the plastic of the liner 10 with the discharge fitting 50. In the exemplary embodiment, the discharge hose 10d also serves as the discharge fitting 50. The inlet section 50a is generally reinforced, for example, by having an inwardly folded, double-layered section of the inlet section 50a. This inlet section 50a is designed to keep the outlet 20 of the outer container 12 open, at least during filling. There is a risk that this section could become blocked by the filling process. The inlet area 50a also ensures that this area remains open when emptying the outer container 12.
[0059] In the exemplary embodiment, the outlet fitting 50 has an outlet area 50c distal to the liner 10, which is designed to protrude from the valve 24, at least when the outer container is being emptied. The specific procedure made possible by this will be discussed in more detail below with regard to the method. Preferably, this outlet area 50c has an end cap 50d, as shown in Fig. 13, which is preferably detachable. In the simplest case, this can be done by cutting off the end cap, as shown in Fig. 9. The end cap can also simply be an end piece of the outlet area 50c. According to Fig. 14, the outlet area 50c is designed and intended to be guided, at least partially, over the outlet 20 located behind the valve 24 from the perspective of the liner, forming an inversion 50c'. This has the advantage that the entire valve area is protected against contamination on the inside.This extends beyond the outlet 36. Since the inversion 50c' is guided over the external thread of the container 12, a drain 54, such as a hose, can then be attached there. Contamination is advantageously avoided.
[0060] The outlet hose 10 preferably extends beyond the valve 24, allowing the contents to drain out without inverting the valve. Furthermore, the protruding part of the outlet hose 10 can also be inserted into an external drain hose to direct the liquid into it.
[0061] As can be seen particularly in Figures 13 and 15, the outlet molded part 50 has a central section 50b between the inlet area 50a and the outlet area 50c, which can be clamped and / or closed by the closing element 24a of the valve 24 provided on the outer container 12. Figure 15 shows a valve flap as the closing element 24a in a closed position (solid lines) and in an open position (dashed lines). Since the central section 50b has a cross-section and / or a material thickness that is smaller than that of the inlet area 50a and preferably also smaller than that of the outlet area 50c, this clamping or closing can be easily carried out.
[0062] According to the invention, a preferably specially shaped discharge hose 10d is arranged in a valve 24 of the outer container 12 and clamped there by the valve 24. On the one hand, this advantageously prevents contamination of the valve 24 even during subsequent emptying, and on the other hand, the discharge area is additionally secured by the valve during transport.
[0063] The outlet fitting 50 is preferably blown or formed from a plastic film, the material of which is specifically adapted to the requirements inside an (outlet) valve 24 of IBC containers or other outer and transport containers. The outlet hose 10d can also be used for other containers made of other materials and for flange attachment to other designs of inner linings of containers, and can be adapted accordingly if necessary. According to the method, an inliner 10 provided with an outlet hose 10d, as described above, is inserted into an outer container 12 through an opening, preferably a filling opening 12a, in the container wall of the outer container 12 as shown in Fig. 2. This is done by inserting the inliner 10, provided with the outlet hose 10d, into an application hose 16. Such an application hose 16 secures the inliner against unintentional tensioning by the forming rods 14. Previously, in Fig.1 a pulling element, such as a pulling rod 34, is also inserted through the filling opening 12a into the outer container 12 and led out of the outer container again through the opening of the valve 24.
[0064] This pulling element can now be attached directly or, as shown in Fig. 2, for example via a pull cord 30 to the outlet hose 10d of the liner 10. If, as shown in Fig. 3, the application hose 16 with the liner 10 contained therein is inserted through the filling opening 12a, the pulling element (pull cord 30, pull rod 34) is simultaneously pulled, so that the outlet hose 10d is already aligned towards the valve 24 and the outlet 20. The pull rod 24 – like the forming rods 14 – is preferably made of a flexible and resilient material, such as fiberglass rods.
[0065] If the application hose 16 with liner 10, and thus the composite package according to Fig. 3, is located in the outer container 12, the application hose 16 can be pulled upwards. This causes the pre-formed forming rods 14 to clamp the liner at the base 12b in the direction of the arrows shown in Fig. 4, resulting in the configuration shown in Fig. 5. During clamping, the discharge hose 10d is pulled by the pulling element towards the valve 24 and the outlet 20, resulting in the configuration shown in Fig. 5. During the release and clamping of the liner 10, the discharge hose 10d thus comes to rest in the valve 24 in such a way that it can be clamped and / or closed there by a closing element 24a, such as a valve flap or a hemisphere. The discharge hose 10d is preferably equipped with the outlet molded part 50.
[0066] When loading the outer container 12 with the liner 10, which is equipped with the outlet hose 10d, the liner is inserted into the outer container 12 with the outlet hose leading, as shown in Fig. 2. Using a suitable insertion aid, preferably a pull cord 30 or a rope attached to the outlet hose 10d, the outlet hose 10d is pulled through the open valve 24 of the outer container 12 and positioned in the valve 24, thus advantageously lining it against contamination. In this state, the outlet hose 10d is placed on the valve and within the flow path of the valve 24 – preferably by means of the connection and closure elements already present on the valve 24, such as threads, valve flaps, or cross-sectional changes – and clamped, for example, by the closure element 24a.
[0067] As soon as the liner 10 at the bottom 12b of the outer container 12 is fully open and the discharge hose 10d is pulled through the valve 24 of the outer container, the self-reinforcing section 50a of the discharge fitting comes into contact with the outlet 20 to prevent it from being squeezed open by the contents. As shown in Fig. 6, the discharge hose 10d is pulled through the valve 24 in this position, so that the pull cord 30 can be cut.
[0068] As shown in Figures 7 and 8, the front section of the outlet hose 10d is inserted into the part of the valve 24 of the reservoir 12 located in front of the closure element 24a. The valve can then be closed using the cover cap 22, as shown in Figure 8, while the outlet hose 10d is simultaneously secured in position by the closure element 24a.
[0069] To empty the liner 10 located in the outer container 12, the outlet fitting 50 of the outlet hose 10d, which can be fixed in the area of the valve 24, is first pulled out, as shown in Fig. 9. In this state, the closure element 24a, like a valve flap or a hemisphere, is preferably closed, as shown in Fig. 8. This is equivalent to the central area 50c of the outlet fitting 50 being fixed by the closure element 24a in the area of the valve 24, thus closing the outlet hose 10d. Now, as shown in Fig. 9, the end cap 50d of the outlet fitting can be cut off at its tip. This opens the outlet hose 10d. The small amount of liquid that flows out should be collected. The outer container 12 can then be emptied, as shown in Fig. 10.
[0070] Advantageously, the outlet hose 10d is spread and fully opened using jaw pliers, and the film of the outlet hose is shifted from the jaws of the pliers towards the external thread on the valve 24, thereby being pulled over the external thread. The overall length of the outlet hose 10d is designed to be long enough to completely cover the external thread of the valve 24 when pulled over it. At the same time, the diameter of the outlet hose at the front is designed to be smaller than the outer diameter of the external thread, so that it fits snugly there through a stretching effect. The jaw pliers preferably overstretch the front section of the outlet hose 10d first, and then allow it to return to its original shape, thus firmly covering and securing the external thread of the valve 24 through the stretching effect.
[0071] Preferably, a hose can now be screwed onto the external thread of the liner 10, which is provided with the foil of the outlet hose 10d, by means of a union nut as shown in Fig. 16, to serve as a drain 54 for the removal / flow of the filling material.
[0072] After opening the closure element 24a, the contents can drain out, e.g., into the flanged hose or a container, thereby emptying the inner liner 10 or the outer container 12. The closure element 24a can be opened and closed several times as needed. In doing so, it pinches off – possibly repeatedly – the central section 50b of the outlet fitting 50, thus sealing the outlet hose 10d.
[0073] To remove the liner 10 from the outer container 12 after emptying, the outlet area 50c of the outlet hose 10d should be resealed as shown in Fig. 17, preferably by tying it off with a clamp, cable tie, or other suitable binding material, to prevent contamination by any residual quantities remaining in the liner. This protects the outer container 12 from contamination when the liner 10 is pulled out, for example, by dripping from the outlet hose of even the smallest residual amounts of contents remaining in the liner. All of this is achieved without contaminating the valve 24 or the outer container 12.
[0074] The discharge hose 10d is supported by its shape in the area of the transition to the liner by the inlet area 50a. This ensures that it remains open to the valve 24 in the inner inlet area of the container 12. This advantageously prevents pinching by the material flowing into the liner from above during filling.
[0075] The emptied inner liner of the container can be pulled out again through the filling opening 12a, and the outer container 12 can be fitted with a new liner 10. To enable the liner 10 to be fitted quickly, a composite package is advantageously provided according to the invention, which is suitable for introducing the liner 10 through a filling opening 12a of the outer container 12. This composite package comprises the liner 10, as described above, with the forming rods 14 for unfolding the liner 10 after it has been inserted into the outer container 12. It comprises the application hose 16, in which the liner 10 and the forming rods 14 can be received in their deformed position, the outer dimensions of the application hose 16 being configured to be smaller than the filling opening 12a of the outer container 12. The inliner has the outlet hose 10d, which can be used as outlet opening 36 of the inliner 12.This discharge hose 10d is designed to be positioned in the valve 24 at the outlet 20 and to penetrate the valve 24, at least when emptying the container 12. The discharge hose 10d is the discharge fitting 50, which is equipped with a central section, as explained above.
[0076] A valve screwed onto the outer container 12 can also serve as the closure element 24a, securing the outlet fitting 50. In this case, the liner 10 allows the contents to be stored as if vacuum-sealed. The liner 10 prevents condensation or germs forming between the top of the contents and the top of the outer container 12 from dripping into and contaminating the contents. The film of the liner 10 prevents this, effectively "insulating" the contents. The outlet hose 10d then acts like a clamp, fixed between the outer container and the screwed-on valve 24. This effectively secures the liner against slippage. When the outlet fitting is opened during emptying, a significantly higher flow rate from the valve results.
[0077] It goes without saying that this description may be subject to various modifications, changes, and adaptations, which are equivalent to the attached claims. Reference numeral list
[0078] 10 inline skates
[0079] 10a Filling area
[0080] 10c Fixing element 10d Outlet hose
[0081] 12 transport containers 12a filling opening
[0082] 12b Floor area
[0083] 14 Form bar
[0084] 16 Application hose 18 Molded part
[0085] 18a Air holes
[0086] 20 outlet
[0087] 22 Cover cap
[0088] 24 valve
[0089] 24a Locking element 26 Loop strap
[0090] 30 pull cord
[0091] 34 Pull rod
[0092] 36 Outlet opening of 10 38 sump
[0093] 40 Filling material
[0094] 50 Outlet mold part
[0095] 50a Inlet area
[0096] 50b Medium range
[0097] 50°C outlet area 50°C' inversion
[0098] 50d End cap
[0099] 52 connection
[0100] 54 Indulgence
Claims
Patent claims 1. Inliner (10), designed to receive filling material (40) and to be introduced through an opening in a container wall of an outer container (12), wherein the inliner has an outlet hose (10d) which can be used as an outlet opening (36) of the inliner (12) and can be detachably positioned at an outlet (20) of the outer container in a state placed in the outer container (12), wherein the discharge hose (10d) has a discharge fitting (50) which is designed to be positioned around the discharge hose (10d) in a valve (24) at the outlet (20) and to penetrate the valve (24) at least when emptying the container (12), characterized in that the outlet mold part (50) has a central area (50b) between an inlet area (50a) located proximally to the inliner (10) and an outlet area (50c) distal to the inliner (10), which is designed to be clamped and / or closed by a closing element (24a) of the valve (24) provided on the outer container (12), and that the central area (50b) has a smaller cross-section and / or a lower material thickness compared to the inlet area (50a).
2. Inliner according to claim 1, characterized in that the outlet hose (10d) is connected to the inliner in the area of the inlet area (50a) via connections (52), wherein the inlet area (50a) is designed to keep the outlet (20) of the outer container (12) open at least when filling the outer container (12).
3. Inliner according to claim 1 or 2, characterized in that the outlet area (50c) is designed to protrude from the valve (24) at least when emptying the outer container (12).
4. Inliner according to one of the preceding claims, characterized in that the outlet area (50c) is arranged to be guided through the outlet (20) located behind the valve (24).
5. Inliner according to one of the preceding claims, characterized in that the outlet area (50c) has a detachable end cap (50d).
6. Inliner according to claim 5, characterized in that the outlet area (50c), optionally after detachment of the end cap (50d), is arranged to be guided at least partially on the outside over the outlet (20) located behind the valve (24), forming an inversion (50c').
7. Inliner according to one of the preceding claims, characterized in that the central area (50b) has a smaller cross-section and / or a lower material thickness compared to the outlet area (50c).
8. Composite package, designed for the insertion of an inliner (10) through an opening in a container wall of an outer container (12), comprising - an inliner (10) according to one of the preceding claims with forming rods (14) for unfolding the inliner (10) after insertion into the outer container (12), - an application hose (16) in which the inliner (10) and the forming rods (14) can be received in their deformed position and whose outer dimensions are configured such that they are smaller than a filling opening (12a) of the outer container (12), - wherein the liner (10) has a discharge hose (10d) which can be used as a discharge opening (36) of the liner (12) and can be detachably positioned at a discharge (20) of the outer container in a state placed in the outer container (12) - wherein the discharge hose (10d) has a discharge fitting (50) which is configured to be positioned around the discharge hose (10d) in a valve (24) at the discharge (20) and to penetrate the valve (24) at least when emptying the outer container (12). characterized in that the outlet mold part (50) has a central area (50b) between an inlet area (50a) located proximally to the inliner (10) and an outlet area (50c) distal to the inliner (10), which is designed to be clamped and / or closed by a closing element (24a) of the valve (24) provided on the outer container (12), and that the central area (50b) has a smaller cross-section and / or a lower material thickness compared to the inlet area (50a).
9. Method for introducing an inliner (10) equipped with a discharge hose (10d) and designed to receive filling material (40) into a container (12) through an opening in a container wall of the container (12), wherein the discharge hose (10d) can be used as a discharge opening (36) of the inliner (12) and can be detachably positioned at an outlet (20) of the container when inserted into the container (12). with the following steps: - Transferring the inliner (10) equipped with the outlet hose (10d) into an application hose (16), - Attaching a pulling element (30, 34) to the outlet hose (1 Od), - Insertion of the pulling element (30, 34) through a filling opening (12a) into the outer container (12) and passage of the pulling element (30, 34) through an outlet (20) of the outer container (12) provided with a valve (24) - Inserting the application hose (16) with the inliner (10) contained therein through the filling opening (12a) while simultaneously pulling on the pulling element, - Removing the application hose (16) while releasing and stretching the inliner (10), whereby the outlet hose (10d) comes to lie in the valve (24) in such a way that it can be clamped and / or closed there by a closing element (24a) of the valve (24).
10. Method according to claim 9, characterized in that the inliner is an inliner (10) equipped with a discharge mold part (50) according to one of claims 1 to 7.
11. Method according to claim 9 or 10, characterized in that the following steps are carried out to empty the liner (10) located in the outer container (12): - Pulling out the outlet shape (50) of the outlet hose (1 Od) which can be fixed in the area of the valve (24), - Securing and closing the central area (50c) of the outlet mold part (50) by means of a closing element (24a) in the area of the valve (24), - Detaching the end cap (50d) of the outlet mold part (50), - Inverting the outlet area (50c) over the outer surface of the outlet (20) of the container (12), - Opening the valve (24) and emptying the liner (10) through the valve (24), if necessary down to a residual amount of filling material (40), - Closing the outlet hose (10d) of the liner (10) and removing the liner (10) from the container (12) through its filling opening (12a), if necessary removing the remaining quantity.