Packaging and refill bags for packaging

Abstract

Packaging for flowable products, especially viscous liquids, comprising a container (2) with a container opening (20) and a gas inlet opening (21) through which gas, in particular air, can flow into an interior of the container, and a refill bag (3) which can be inserted interchangeably into the interior of the container (2) and which receives the product and has a dispensing opening (32), wherein the refill bag (3) comprises a base body (30) made of a deformable material which is deformable under the influence of pressure in order to dispense the product via the dispensing opening (32), wherein an interior of the container (2) comprises a first section having the gas inlet opening and a second section having the container opening, wherein at least the first section of the container (2) is fluidically separated from an environment in the inserted state of the refill bag (3) so that no gas can escape from the first section into the environment, wherein gas can flow into the first section via the gas inlet opening (21) in the inserted state of the refill bag (3), and wherein the base body (30) of the refill bag (3) in an inserted state is gas-tight against a wall of the container (2) at the second section and / or a separating element (5) is provided by which, at least in the inserted state, an inflow of gas from the first section into a gap between the wall of the container and the base body (30) of the refill bag (3) at the second section is prevented, characterized by the fact that a disruptive element (6) is provided in the interior of the container (2), at a transition between the first section and the second section of the container (2) and / or on the second section of the container (2).

Description

FIELD OF APPLICATION AND STATE OF THE ART

[0001] The invention relates to a package for flowable products, in particular for viscous liquids, comprising a container with a container opening and a gas inlet opening through which a gas, in particular air, can flow into an interior of the container, and a refill bag that can be exchangeably inserted into the interior of the container and holds the product, said refill bag comprising a base body made of a deformable material that is deformable under the action of pressure in order to dispense the product through the dispensing opening. The invention further relates to a refill bag for a package.

[0002] In a packaging comprising a refill bag with a refill bag deformable for product dispensing, the pressure in the interior of the container can be increased, for example, by deforming an elastically shaped container and / or by supplying gas into a particularly rigid container, so that the refill bag is compressed and the product contained therein is dispensed.

[0003] The use of a refill bag, also referred to as a single-use refill bag, has the advantage that less plastic is required for the production of a refill bag compared to a commercial packaging that is disposed of in its entirety. For example, when producing a refill bag with a content of 300 ml, approximately 30 kg of plastic can be saved per 1,000 pieces compared to the production of a commercial packaging.

[0004] WO 2022 / 228926 A1 shows a container for a preferably viscous liquid, comprising a compressible, preferably elastic outer body and an inner body with an opening to the outside of the container for receiving the liquid, wherein air is enclosed between the outer body and the inner body and the inner body is connected to the outer body such that upon the application of an external compressive force on the outer body, the enclosed air transfers this force to the inner body and thereby displaces and expels the liquid from the container.

[0005] WO 2004 / 028924 A1 discloses a package comprising a container and a refill bag inserted therein for receiving the product. The refill bag has a portion made of a rigid material and a portion made of a flexible material, with the flexible material portion being folded into the rigid material portion upon emptying. TASK AND SOLUTION

[0006] The objects of the invention are to provide an improved packaging for flowable products, in particular for viscous liquids, with a refill bag and a refill bag therefor, wherein in particular the aim is to empty the refill bag as completely as possible.

[0007] According to a first aspect, a package for flowable products, in particular for viscous liquids, is created. The package comprises a container with a container opening and a gas inlet opening through which gas, in particular air, can flow into an interior of the container. The package comprises a refill bag that can be interchangeably inserted into the interior of the container and holds the product, said bag having a dispensing opening. The refill bag comprises a base body made of a deformable material that is deformable under the action of pressure in order to dispense the product via the dispensing opening. The refill bag is interchangeably inserted into the interior. In particular, the refill bag can be removed without residue after the product has been used up, without destroying the container. For example, the refill bag is not integrally connected to the container.The base body is, in particular, cylindrical, with a first end having an opening, for example, the discharge opening, and an opposite, second, closed end. Such a base body is inexpensive and can be manufactured with minimal material expenditure.

[0008] An interior of the container comprises a first section having the gas inlet opening and a second section having the container opening.

[0009] At least the first section of the container is fluidically separated from the environment when the refill bag is inserted, so that no gas can escape from the first section into the environment, whereby gas can flow into the first section via the gas inlet opening when the refill bag is inserted.

[0010] At least when the refill bag is inserted, gas is prevented from flowing from the first section of the container into the second section. In some embodiments, the base body of the refill bag, when inserted, rests gas-tight against a wall of the container at the second section. In other embodiments, a separating element is alternatively or additionally provided, which, at least when inserted, prevents gas from flowing from the first section into a gap between the wall of the container and the base body of the refill bag at the second section.

[0011] The packaging has a disruptive element in the interior of the container, at a transition between the first section and the second section of the container and / or at the second section of the container.

[0012] The disruptive element causes the main body of the refill bag to be placed and / or remain in contact with the wall in the region of the disruptive element when gas enters the interior of the container via the gas inlet opening, and the main body is turned inside out at the disruptive element, whereby a closed end of the main body is deflected in the direction of the dispensing opening of the refill bag.

[0013] In particular, turning the refill bag inside out prevents a pressurized gas in the interior of the container from deforming the base body in such a way that areas of the base body still filled with product are separated from the dispensing opening and the product is enclosed.

[0014] Compared to a design known, for example, from WO 2004 / 028924 A1, the packaging according to the invention is advantageous, among other things, because the material required for producing the refill bag and / or the costs for production are reduced.

[0015] The terms "first," "second," etc., are used in the context of this application merely for differentiation and do not indicate a sequence. The terms "a," "an," "one," etc., are used in the context of this application merely as indefinite articles and not as number pronouns. For example, in some embodiments, the container may comprise more than one gas inlet opening. In some embodiments, the container comprises exactly one gas inlet opening. In some embodiments, more than one disruptive element is provided.

[0016] In some embodiments, a central region of the base body, located in the direction of a longitudinal extension of the base body, lies opposite the disruptive element and / or contacts the disruptive element, at least when the refill bag is inserted. The central region is defined as an area that lies at least substantially in the middle between the dispensing opening and an opposite end of the base body. By positioning the disruptive element in the central region, a central inversion of the base body can be achieved for its most complete emptying.

[0017] In some embodiments, the disruptive element is designed as one piece with the refill bag, in particular with its base body.

[0018] In other embodiments, the disruptive element is alternatively or additionally designed as a cross-sectional change formed on the wall of the container, in particular as a radially projecting nose, a continuous or discontinuous circumferential projection, a continuous or discontinuous circumferential groove, and / or a friction-enhancing surface structure. The design of the disruptive element can be suitably selected depending on the application, for example, depending on the product and / or the size of the packaging.

[0019] In embodiments, alternatively or additionally, the disruptive element is designed as a separate element mounted on the container and / or the refill bag. For example, the disruptive element is designed as a sealing element, for example as a sealing ring, that encloses the base body in the inserted state. The sealing element, for example the sealing ring, in embodiments also serves as a separating element, by means of which an inflow of gas from the first section into a gap between the wall of the container and the base body of the refill bag at the second section is prevented. For example, the container is divided into two parts and can be opened to insert the refill bag, wherein, in a closed state of the container, the sealing element fluidically separates the second section from the first section and simultaneously functions as a disruptive element, at which an everting of the base body occurs.

[0020] In embodiments, it is provided that the separating element is designed as a bag-shaped membrane which is connected to the wall of the container, in particular in the region of a transition between the first section and the second section of the container or in the region of the gas inlet opening. A gas flowing into the interior guides and / or inverts the membrane successively into the second section, in particular towards a dispensing opening of an inserted refill bag. A length of the bag-shaped membrane is in particular selected such that the completely inverted membrane and / or membrane introduced into the second section by inflowing gas rests against the base body, which has been inverted, in particular centrally and / or completely, and a received product can be displaced as completely as possible.For example, the length of a membrane connected to the container in the transition region between the first and second sections of the container is at least equal to half the length of the base body of the refill bag. The membrane is made, in particular, of a gas-impermeable material, for example, plastic. The material of the membrane is, in particular, selected such that repeated inflation and / or inversion is possible without, or at least without noticeable impairment of, functionality.

[0021] In some embodiments, a check valve, particularly a spring-loaded one and / or a foil valve, is provided at the gas inlet opening. Gas can flow into the first section of the container through the check valve, preventing gas from flowing out of the first section.

[0022] In some embodiments, the separating element is designed such that the first section is fluidically separated from the second section. In embodiments without a refill bag inserted, the second section is connected to the environment via the container opening.

[0023] In embodiments, the gas inlet opening is operable, at least in a non-inserted state of the refill bag, to fluidically connect the first section of the container to the environment for pressure equalization, in particular to enable gas to flow out of the first section.

[0024] In some embodiments, a first section of the container is fluidically connected to the environment via a venting channel, wherein the venting channel is closed or closable when the refill bag is inserted. The venting channel enables pressure equalization of the first section, which is fluidically separated from the environment, in particular by a separating element, for example a membrane, in particular to enable gas to flow out of the first section, for example after or upon removal of a refill bag. In some embodiments, the venting channel is closed when the refill bag is inserted, for example by elements of the refill bag. In some embodiments, the venting channel is closed by a closure element.

[0025] In embodiments, the wall of the container is made at least in sections of an elastically deformable material, wherein a pressure can be built up in the container by deformation of the container.

[0026] In some embodiments, the wall of the container is made of a rigid material. A rigid material is defined above and / or below as a material that undergoes no, or at least no noticeable, deformation under the forces acting during normal use. Pressure buildup in the container for product discharge is achieved by a gas supply, in particular an air supply via the gas inlet opening.

[0027] In embodiments, a pump housing made of an elastically deformable material is provided, wherein an interior of the pump housing is connected to the interior of the container via the gas inlet opening, such that when the pressure in an interior of the pump housing increases, gas flows from the interior of the pump housing via the gas inlet opening into the interior of the container. The pump housing is deformable, in particular manually, to increase the pressure and thereby discharge the product. The pump housing and the container form, in particular, a jointly manageable unit. The unit comprising the pump housing and the container is also referred to above and below as the housing. The pump housing can be designed to be suitable for simple manual operation.

[0028] In embodiments, it is provided that the pump housing surrounds the container at least in sections.

[0029] In some embodiments, the pump housing and the container are arranged adjacent to one another. In some embodiments, the pump housing is arranged on an outer side of the container, in particular in the region of the first section. For example, the pump housing and the container are arranged adjacent to one another in the longitudinal direction of the packaging, for example, defined by an extension of the inserted refill bag.

[0030] Alternatively or in addition to manual actuation of the packaging for product discharge, some embodiments provide a motor-driven pressure generator, in particular a compressor, wherein a compressed gas can be supplied to the first section via the gas inlet opening. In some embodiments, the pressure generator is arranged in a casing made of a rigid material. For example, the casing surrounds the container at least in sections. In some embodiments, the casing and the container are arranged adjacent to one another, for example, adjacent to one another in the longitudinal direction of the packaging.

[0031] In some embodiments of the packaging, the container opening is sealed gas-tight by the refill bag when inserted. In some embodiments of the packaging, the container opening is sealed gas-tight by a closure element, at least when the refill bag is inserted. In particular, closing the container opening with the refill bag allows for easy handling when inserting and / or replacing the refill bag.

[0032] In some embodiments of the packaging, the dispensing opening of the refill bag protrudes beyond the container opening when inserted. In particular, in some embodiments, product discharge occurs directly through the dispensing opening, whereby, when used properly, a product does not touch any components or areas of the packaging that are reused when the refill bag is changed. This prevents contamination of the product by product residues or germs on reused packaging components. In some embodiments of the packaging, the dispensing opening of the refill bag opens at the container opening.

[0033] In some embodiments, the refill bag comprises a lid element. In some embodiments, the base body has an open end, which is closed by the lid element, with the dispensing opening being provided on the lid element. In particular, in some embodiments, the lid element has a closing element that covers the dispensing opening when closed and / or a dispensing valve that closes the dispensing opening. The lid element can be suitably selected depending on the application and the product present in the refill bag.

[0034] In some embodiments, the base body of the refill bag has a cylindrical shape, with a diameter of the base body being smaller than its height. A cylindrical, particularly circular-cylindrical, shape is advantageous for inverting the base body for complete emptying.

[0035] According to a second aspect, a refill bag with a dispensing opening, in particular for a packaging as described above, is provided, comprising a base body made of a deformable material. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Further advantages and aspects of the invention emerge not only from the claims but also from the following description of exemplary embodiments of the invention, which are explained with reference to the figures. In the figures: Fig. 1 shows a first embodiment of a packaging comprising a container, a refill bag insertable into the container and a pump housing surrounding the container before or at the start of a product discharge; Fig. 2 the packaging according to Fig. 1 after emptying the refill bag; Fig. 2a a detail IIa of the refill bag of the packaging according to Fig. 2; Fig. 2b a detail IIb of the refill bag of the packaging according to Fig. 2; Fig. 3 the refill bag of the packaging according to Fig. 1 before or at the start of a product discharge; Fig. 3a a detail IIIa of the refill bag according to Fig. 3; Fig. 4 the refill bag of the packaging according to Fig. 1 after emptying the refill bag; Fig. 4a a detail IVa of the refill bag according to Fig. 4; Fig. 4b a detail IVb of the refill bag according to Fig. 4; Fig. 5 a housing of the packaging according to Fig. 1 comprising the container and the pump housing; Fig. 6 shows a second embodiment of a packaging comprising a container, a refill bag insertable into the container and a pump housing surrounding the container before or at the start of a product discharge; Fig. 7 shows a third embodiment of a packaging comprising a container, a refill bag insertable into the container and a casing surrounding the container before or at the start of a product discharge; Fig. 8 shows a fourth embodiment of a packaging comprising a container, a refill bag insertable into the container and a pump housing arranged in the longitudinal direction of the refill bag adjacent to the container before or at the start of a product discharge; Fig. 9 the packaging according to Fig. 8 after emptying the refill bag; Fig. 9a a detail IXa of the refill bag of the packaging according to Fig. 9; Fig. 9b a detail IXb of the refill bag of the packaging according to Fig. 9; Fig. 10 a housing of the packaging according to Fig. 8 comprising the container and the pump housing; Fig. 11 shows a fifth embodiment of a package comprising a container, a refill bag insertable into the container, and a pump housing arranged in the longitudinal direction of the refill bag adjacent to the container before or at the beginning of a product discharge; and Fig. 12 a sixth embodiment of a package comprising a container and a refill bag insertable into the container with an external pressure generator and / or an external gas cartridge. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] Fig. 1 to 5 each show, in sectional views, a first embodiment of a packaging 1 for flowable products, in particular for viscous liquids (not shown).

[0038] The Fig. The packaging shown in Figures 1 to 5 comprises a container 2, a refill bag 3 which can be inserted into the container 2 and a pump housing 4 surrounding the container 2. Fig. 1 the packaging 1 in an inserted state of the refill bag 3 before or at the beginning of a product discharge, Fig. 2 the packaging 1 after emptying the refill bag 2, Fig. 2a a detail IIa of the refill bag 3 of the packaging 1 according to Fig. 2, Fig. 2b a detail IIb of the refill bag 3 of the packaging according to Fig. 2, Fig. 3 in isolation the refill bag 3 of the packaging 1 before or at the beginning of a product discharge, Fig. 3a a detail IIIa of the refill bag 3 according to Fig. 3, Fig. 4 in isolation the refill bag 3 after emptying the refill bag, Fig. 4a a detail IVb of the refill bag 3 according to Fig. 4, Fig. 4b a detail IVb of the refill bag 3 according to Fig. 4, and Fig. 5 in isolation a housing of the packaging 1 according to Fig. 1 comprising the container 3 and the pump housing 4.

[0039] The refill bag 3 comprises a base body 30 made of a deformable material. In the illustrated embodiment, the base body 3 is cylindrical, in particular circular-cylindrical, with a closed end. A dispensing opening 32 is provided at an end opposite the closed end. Under the influence of external pressure acting on the base body 30, the base body 30 is deformable in order to dispense a product stored in the base body 30 via the dispensing opening 32. In the illustrated embodiment, the refill bag 3 comprises a lid element 34, which is arranged at the end of the refill bag 3 having the dispensing opening 32. For example, an open end of the base body 30 opposite the closed end of the base body 30 is closed by the lid element 34, with the dispensing opening 32 being provided on the lid element 34.The cover element 34 is connected to the base body 30 in a fluid-tight manner, for example, by a material bond. The illustrated cover element 34 comprises a closing element 36 that covers the dispensing opening 32 in the closed state. In embodiments, the cover element 34 alternatively or additionally comprises a dispensing valve that closes the dispensing opening 32 and opens for product discharge.

[0040] The container 2 has a container opening 20. In the illustrated embodiment, the container opening 20 is arranged at one end of a cylindrical container 2. In the illustrated embodiment, the refill bag 3 can be inserted into an interior of the container 2 via the container opening 20. The container opening 20 and the interior of the container 2 have a cross-section complementary to the cross-section of the base body 30. In particular, the base body 30 can be inserted into the container 2 with minimal play.

[0041] In the illustrated embodiment, the refill bag 3 can be inserted into the container 2 such that the container opening 20 is closed by the refill bag 3. In the illustrated embodiment, the lid element 34 has a flange 340 which rests against a collar 200 on the container opening 20. Securing elements 201 are provided on the container opening 20, wherein, for example, by rotating the refill bag 3 relative to the container 2, the flange 340 can be inserted into a gap between the collar 200 and the securing elements 201 and thus secured against removal. In embodiments not shown, a separate closure element is provided, wherein the container opening 20 and the dispensing opening 32 of the refill bag 3 can be closed by the closure element when the refill bag 3 is inserted.

[0042] In embodiments not shown, the container 2 is made up of several parts, wherein at least two parts of the container 2 are movable relative to one another in order to transfer the container 2 between an open state, in which a refill bag 3 can be inserted into the interior of the container 2, and a closed state for use of the product.

[0043] The container 3 further comprises a gas inlet opening 21, through which a gas, in particular air, can flow into an interior of the container 2. In the Fig. In the embodiment illustrated in Figures 1 to 5, a check valve 22 is provided at the gas inlet opening 21. The check valve 22 opens when there is an excess pressure applied to the outside of the check valve 22 relative to the interior of the container 2, allowing a gas to flow into the interior, which then acts on the base body 30 of the refill bag to discharge the product. In the illustrated embodiment, the container opening 20 and the gas inlet opening 21 are arranged at opposite ends of a cylindrical container 2. In some embodiments, the gas inlet opening 21 and / or the container opening 20 are provided on a lateral surface.

[0044] The wall of the container 2 is in the Fig. 1 to 5, the container 2 is made in particular of a rigid material which does not experience any, or at least no noticeable, deformation when there is a pressure difference in the interior of the container 2 compared to the immediate surroundings.

[0045] For pressure generation for product discharge, the Fig. 1 to 5, the pump housing 4 is provided. The pump housing 4 is made of an elastically deformable material and is deformed by a pressure acting on the pump housing 4 from the outside, as schematically shown by a dashed line in Fig. 1. In particular, the pump housing 4 can be deformed manually by applying a manual force, for example by pressing, as schematically shown by dashed lines in Fig. 1. This deformation causes a pressure increase, whereby the check valve 22 of the container 2 opens to equalize the pressure. The gas, particularly air, then flowing into the interior of the container 2 causes the product to be discharged.

[0046] In the Fig. In the embodiment shown in Figures 1 to 5, the pump housing 4 surrounds the container 2. The pump housing 4 can, for example, be gripped with one hand in order to manually deform the pump housing 4.

[0047] When the force acting on the pump housing 4 is removed, the pump housing 4 returns to its original shape, wherein gas, in particular air, can flow in from the environment via a check valve 40 provided on the pump housing 4 to equalize the pressure.

[0048] The interior of the container 2 comprises a first section having the gas inlet opening 21 and a second section having the container opening 20.

[0049] The first section of the container 2 is in the Fig. 1, the refill bag 3 is fluidically separated from its surroundings, so that no gas can escape from the first section into the environment. Gas can flow into the first section via the gas inlet opening 21, as described, even when the refill bag 3 is inserted.

[0050] In the Fig. 1 to 5, a separating element 5 designed as a bag-shaped membrane is provided, by means of which an inflow of gas from the first section into a gap between the wall of the container 2 and the base body 30 of the refill bag 3 at the second section is prevented. The separating element 5 designed as a bag-shaped membrane is connected to the wall of the container 2. In the illustrated embodiment, the separating element 5 designed as a membrane is connected to the container 2 at the outer surface of the container 2. A gas flowing into the interior at the gas inlet opening 21 causes the membrane to Fig. 1 and is successively deformed into the second section, in particular in the direction of a dispensing opening 32 of an inserted refill bag 3.

[0051] The inversion of the membrane causes a deformation of the base body 30 of the refill bag 3. In order to achieve an inversion of the base body 30, a disruptive element 6 is provided in the interior of the container 2.

[0052] The disruptive element 6 is located, particularly in the inserted state of the refill bag 3, opposite a central region 300 of the base body 30 (schematically represented by a dot-dash line) in the direction of a longitudinal extension of the base body 30. In some embodiments, the disruptive element 6 contacts the base body 30.

[0053] The disruptive element 6 causes that when gas enters the interior of the container 2, in particular into the first section, via the gas inlet opening 21, the base body 30 of the refill bag 3 remains adjacent to the wall in the area of ​​the disruptive element 6, and the base body 30 on the disruptive element 6, as shown schematically in Fig. 2 and Fig. 2b and Fig. 4 and Fig. 4b, is turned inside out, whereby a closed end of the base body 30 is deflected in the direction of the dispensing opening 32 of the refill bag 30.

[0054] Due to the central arrangement of the disruptive element 6 on the base body 30 of the inserted refill bag 3, a central turning over of the base body 30 can be achieved for its most complete emptying. As schematically shown in Fig. 2a and Fig. 4a, a closed end of the centrally turned-over base body 30 rests against the cover element 34. In Fig. In Figure 2a, the membrane is shown spaced apart from the inverted end of the base body 30. In some embodiments, the membrane rests against the base body 30.

[0055] As shown schematically in Fig. 3a, the base body 30 is, for example, materially connected to an end of the cover element 34 facing away from the dispensing opening 32.

[0056] In the Fig. In the embodiment shown in Figures 1 to 5, the disruptive element 6 is designed as a cross-sectional change 24 formed on the wall of the container 2, in particular as a continuous or interrupted circumferential projection. The projection is designed in particular such that it does not hinder insertion of the refill bag 3. In some embodiments, a cross-sectional change in the form of a continuous or interrupted circumferential groove is provided as the disruptive element. In some embodiments, a cross-sectional change in the form of one or more, in particular radially projecting, lugs is provided as the disruptive element.

[0057] In the Fig. 1 to 5, the container 2 and the pump housing 4 form a recyclable housing, which in Fig. 5 is shown in isolation. The container 2 and the pump housing 4 form a unit that can be handled together.

[0058] The completely emptied refill bag 3 (see Fig. 4) can be removed and replaced with a refill bag 3 filled with product (see Fig. 3) be replaced. The Fig. The housing shown in Figure 5 comprising the container 3 and the pump housing 5 can be reused after consumption. Fig. In the embodiment illustrated in Figures 1 to 5, product discharge is possible via the discharge opening 32 without the product touching any components or areas of the recyclable housing. The housing can thus be subsequently reused for a similar or different product.

[0059] As in Fig. 2 and Fig. 5, the first section of the container 2 is fluidically connected to the environment via a venting channel 26. The venting channel 26 is closed when the refill bag 3 is inserted, for example, by the refill bag 3. For example, the venting channel 26 is closed during or after removal of the refill bag 3, so that before or during insertion of a refill bag 3 filled with product, the separating element 5 designed as a membrane from the Fig. 2 shown inverted state back into a Fig. 1. The membrane is deformed again for subsequent product discharge.

[0060] Fig. Figure 6 shows a second embodiment of a package 1 comprising a container 2, a refill bag 3 insertable into the container, and a pump housing 4 surrounding the container before or at the beginning of a product discharge. The package 1 according to Fig. 6 is similar to packaging 1 according to the Fig. 1 to 5 and identical components are identified by identical reference numerals. For a detailed description of identical or similar parts, please refer to the above description.

[0061] In contrast to the design according to the Fig. 1 to 5, no membrane-shaped separating element is provided. Instead, the design according to Fig. 6, a separating element 5 designed as a sealing element is provided. The separating element 5 also functions as a disruptive element 6, which increases friction in contact with the base body 30 of the refill bag. The disruptive element 6 can thus ensure that the base body 30 is turned inside out in an area contacting the disruptive element 6, in particular in a central area. In embodiments, the sealing element acting as a disruptive and separating element 5, 6 is arranged on the base body 30, and the base body with the element can be inserted into a container 2 that can be opened, for example.

[0062] Fig. Figure 7 shows a third embodiment of a package 1 comprising a container 2, a refill bag 3 insertable into the container, and a casing 8 surrounding the container before or at the beginning of a product discharge. The package 1 according to Fig. 6 is similar to packaging 1 according to the Fig. 1 to 5 and identical components are identified by identical reference numerals. For a detailed description of identical or similar parts, please refer to the above description.

[0063] In contrast to the design according to the Fig. 1 to 5, instead of an elastically deformable pump housing, a casing 8 made of a rigid material is provided, which undergoes no, or at least no significant, deformation under a pressure difference with the ambient temperature occurring during normal use. A motor-driven pressure generator 7, in particular a compressor, is provided in the casing 8. A compressed gas can be supplied to the container 2, in particular to the first section of the container 2, via the gas inlet opening 21 in order to cause a pressure increase and thus a product discharge in the container 2. A check valve 80 is provided on the casing 8, through which gas, in particular air, can flow into the casing 8. Fig. 7 schematically shows a sealing element acting as a disturbance and separating element 5, 6. In a different design, for example, a membrane according to the Fig. 1 to 5 designed separating element and / or a disruptive element designed as a cross-sectional change is provided.

[0064] Fig. 8 to 10 show a fourth embodiment of a packaging 1 comprising a container 2, a refill bag 3 insertable into the container 2 and a pump housing 4 arranged in the longitudinal direction of the refill bag 3 adjacent to the container 2 before or at the start of a product discharge.

[0065] The Fig. 8 the packaging 1 in an inserted state of the refill bag 3 before or at the beginning of a product discharge, Fig. 9 the packaging 1 after emptying the refill bag 2, Fig. 9a a detail IXa of the refill bag 3 of the packaging 1 according to Fig. 9, Fig. 9b a detail IXb of the refill bag 3 of the packaging according to Fig. 9, and Fig. 10 in isolation a housing of the packaging 1 according to Fig. 9 comprising the container 3 and the pump housing 4.

[0066] Packaging 1 according to Fig. 8 to 10 is similar to packaging 1 according to the Fig. 1 to 5 and identical reference numerals are used for identical components. For a detailed description of identical or similar parts, please refer to the above. In contrast to the design according to Fig. 1 to 5, the pump housing 4 does not surround the container 2, but is arranged adjacent to the container 2. In particular, the pump housing 4 is arranged adjacent to the container 2 in the longitudinal direction of the refill bag 3. This design is particularly advantageous for small filling quantities, whereby the container 2 can be grasped with one hand and the pump housing 4 can be deformed by a finger for actuation.

[0067] On the container 2, a cross-sectional change 24 acting as a disruptive element 6 is provided, which prevents the base body 30 from turning inside out, as shown schematically in the Fig. 9, Fig. 9a and Fig. 9b. The disruptive element 6 also prevents gas from flowing from the first section of the container 2 comprising the gas inlet opening into a gap between the wall of the container 2 and the base body 30 of the refill bag 3 at the second section of the container, in particular on a side of the disruptive element facing the dispensing opening.

[0068] Fig. 11 shows a fifth embodiment of a packaging 1 comprising a container 2, a refill bag 3 insertable into the container 2, and a pump housing 4 arranged in the longitudinal direction of the refill bag 3 adjacent to the container 2 before or at the beginning of a product discharge. The packaging 1 according to the Fig. 11 is similar to packaging 1 according to the Fig. 8 to 10 and identical components are identified by the same reference numerals. In contrast to the design according to Fig. 8 to 10, a separating element 5 designed as a membrane is provided. A schematically illustrated venting channel 26 is provided on the container 2, through which a gas can escape from the first section of the container 2 before, during, or after removing the refill bag 3 from the container 2.

[0069] Fig. Figure 12 shows a sixth embodiment of a package comprising a container and a refill bag insertable into the container with an external gas cartridge. The package 1 according to Fig. 11 is similar to packaging 1 according to the Fig. 8 to 10 and identical reference numerals are used for identical components. For a detailed description of identical or similar parts, please refer to the above. In contrast to the design according to Fig. 8 to 10, packaging 1 includes Fig. 12 no pump housing. In order to increase the pressure in the container 2 for product discharge, an external gas cartridge 9 is provided. The gas inlet opening 21 is designed as a connection 25 for the gas cartridge 9. A cross-sectional change 24 acting as a disruptive element 6 is provided on the container 2, which prevents the base body 30 from turning inside out, as shown schematically in the Fig. 9, Fig. 9a and Fig. 9b. The disruptive element 6 also prevents gas from flowing in from the first section of the container 2 comprising the gas inlet opening into a gap between the wall of the container 2 and the base body 30 of the refill bag 3 at the second section of the container, in particular on a side of the disruptive element facing the dispensing opening. In embodiments, a Fig. 8 not shown separating element, for example a membrane according to the Fig. 1 to 5 are provided.

[0070] The illustrated embodiments are merely exemplary, and numerous modifications are conceivable. In particular, features described in connection with one embodiment can be combined with features of other embodiments to obtain further configurations. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] WO 2022 / 228926 A1

[0004] WO 2004 / 028924 A1 [0005, 0014]

Claims

[1] Packaging for flowable products, in particular for viscous liquids, comprising a container (2) with a container opening (20) and a gas inlet opening (21) through which gas, in particular air, can flow into an interior of the container, and a refill bag (3) which can be replaced in the interior of the container (2) and which holds the product and has a dispensing opening (32), wherein the refill bag (3) comprises a base body (30) made of a deformable material which is deformable under the action of pressure in order to dispense the product via the dispensing opening (32), wherein an interior of the container (2) comprises a first section having the gas inlet opening and a second section having the container opening, wherein at least the first section of the container (2) is fluidically separated from the environment in the inserted state of the refill bag (3), so that no gas can escape from the first section into the environment, wherein gas can flow into the first section via the gas inlet opening (21) in the inserted state of the refill bag (3), and wherein the base body (30) of the refill bag (3) in an inserted state rests gas-tight against a wall of the container (2) at the second section and / or a separating element (5) is provided, by means of which, at least in the inserted state, an inflow of gas from the first section into a gap between the wall of the container and the base body (30) of the refill bag (3) at the second section is prevented, characterized by , that a disturbance element (6) is provided in the interior of the container (2), at a transition between the first section and the second section of the container (2) and / or at the second section of the container (2). [2] Packaging according to claim 1, characterized by that in the inserted state of the refill bag (3), a central region of the base body (30) in the direction of a longitudinal extension of the base body (30) lies opposite the disruptive element (6) and / or contacts the disruptive element (6). [3] Packaging according to claim 1 or 2, characterized by that the disruptive element (6) is designed as a cross-sectional change (24) formed on the wall of the container (2), in particular as a nose, for example a radially projecting nose, as a closed or interrupted circumferential projection, as a closed or interrupted circumferential groove and / or as a friction-increasing surface structuring. [4] Packaging according to claim 1, 2 or 3, characterized bythat the disruptive element is designed as a separate element mounted on the container and / or the refill bag, wherein in particular the disruptive element is designed as a sealing element enclosing the base body in the inserted state, wherein, for example, the sealing element serves as a separating element. [5] Packaging according to one of the preceding claims, characterized by in that the separating element (5) is designed as a bag-shaped membrane which is connected to the wall of the container (2), wherein a gas flowing into the interior successively invaginates the membrane into the second section, in particular in the direction of a dispensing opening (32) of an inserted refill bag (3). [6] Packaging according to one of the preceding claims, characterized by that a check valve (22), in particular a spring-loaded valve and / or a film valve, is provided at the gas inlet opening (21). [7] Packaging according to one of the preceding claims, characterized by that the first section of the container (2) is fluidically connectable to the environment via a venting channel (26), wherein the venting channel (26) is closed or closable when the refill bag (3) is inserted. [8] Packaging according to one of the preceding claims, characterized by that the wall of the container (2) is made of a rigid material. [9] Packaging according to one of the preceding claims, characterized by that a pump housing (4) made of an elastically deformable material is provided, wherein an interior of the pump housing (4) is connected to the interior of the container (2) via the gas inlet opening (21), so that when the pressure in an interior of the pump housing (4) increases, gas flows from the interior of the pump housing (4) via the gas inlet opening (21) into the interior of the container (2). [10] Packaging according to claim 8, characterized by that the pump housing (4) surrounds the container (2) at least in sections and / or the pump housing (4) and the container (2) are arranged adjacent to one another, for example are arranged adjacent to one another in the longitudinal direction of the packaging (1). [11] Packaging according to one of the preceding claims, characterized by that a motor-operated pressure generator (7), in particular a compressor, is provided, wherein a compressed gas can be supplied to the first section via the gas inlet opening (21), wherein in particular the pressure generator (7) is arranged in a casing (8) made of a rigid material, wherein, for example, the casing (8) surrounds the container (2) and / or the casing (8) and the container (2) are arranged adjacent to one another in the longitudinal direction of the packaging (1). [12] Packaging according to one of the preceding claims, characterized bythat the gas inlet opening (21) is designed as a connection (25) for a gas cartridge (9). [13] Packaging according to one of the preceding claims, characterized by that the container opening (20) of the container (2) is closed gas-tight by the refill bag (3) in the inserted state and / or can be closed gas-tight by a closure element at least in the inserted state of the refill bag (3). [14] Packaging according to one of the preceding claims, characterized by that in the inserted state the dispensing opening (32) projects beyond the container opening (20) or opens at the container opening (20). [15] Packaging according to one of the preceding claims, characterized by that the refill bag (3) comprises a lid element (34), wherein in particular the lid element (34) has a closing element (36) covering the dispensing opening (32) in the closed state and / or a dispensing valve closing the dispensing opening. [16] Packaging according to one of the preceding claims, characterized by that the base body (30) of the refill bag (3) has a cylindrical shape, wherein in particular a diameter of the base body (30) is smaller than its height. [17] Refill bag with a dispensing opening (32), in particular for a packaging according to one of the preceding claims, comprising a base body (30) made of a deformable material which is deformable under the action of pressure in order to dispense a product via the dispensing opening (32). [18] Refill bag according to claim 17, characterized by that the refill bag (3) comprises a lid element (34), wherein in particular the lid element (34) has a closing element (36) covering the dispensing opening (32) in the closed state and / or a dispensing valve closing the dispensing opening (32). [19] Refill bag according to claim 17 or 18, characterized bythat the base body (30) has a cylindrical shape, wherein in particular a diameter of the base body (30) is smaller than its height.

Images