EP1524204B1 - Multi-compartment tubular bag with a head piece - Google Patents

Description

Technical area

The invention relates to a multi-chamber tubular bag with an extrudable, multicomponent mass, which has a main chamber for a first component and at least one secondary chamber for a further component, and with a head part. The head part has a substantially flat, an extrusion opening surrounding abutment portion for the multi-chamber tubular bag.

State of the art

Multi-component, chemical compounds are used in various areas of daily life and in particular in construction, such as mortars, adhesives, as sealants or as insulation foams. The compositions usually comprise a hardener, a component to be cured and fillers and possibly further additives. Since these individual components are reactive with each other, they are stored separately from each other until the mass ready for use. For example, by means of a Auspressgerätes the individual components are metered in a predetermined proportion supplied to a mixing element, in which the individual components are mixed to the ready-to-use mass. This is then applied to an application site.

To reduce the amount of packaging material used for the multicomponent masses for environmental as well as economic reasons, z. B. tubular bag made of suitable film material used as a packaging material for such masses, which have a main chamber and at least one secondary chamber. During dispensing of the individual components of the tubular bag is continuously folded and so significantly reduces the amount of packaging to be disposed compared to, for example, a hard plastic packaging. A disadvantage of this general The state of the art is the lack of guarantee of a constant mixing ratio.

The partitions of the multi-chamber tubular bag may move or fold unintentionally during the Auspressvorgangs between the individual chambers, which can lead to massive deviations of the mixing ratios. In particular, in multi-component mortars for injection-based chemical fixings whose safe function is guaranteed only in compliance with the theoretical mixing ratio of the individual components. In addition, a non-uniform film folding lead to malfunction in Auspressgerät. If multiple small amounts of the multicomponent mass to be applied repeatedly, the high safety requirements of, for example, mortars for chemical fixings can not be met in the packaging known from the general state of the art.

From the US 5,647,510 A a cartridge with a arranged inside the cartridge two-chamber booty according to the preamble of claim 1 is known. At the discharge end of the cartridge, a multi-part head part is provided, on which the free ends of the tubular bag are fixed. The larger main chamber has a direct exit into the ejection opening of the cartridge. The secondary chamber is arranged on a separate section of the head part, which has a channel section in the extrusion opening.

A disadvantage of the known solution is that the head part is expensive to manufacture. In particular, in the connection of a multi-chamber tubular bag with more than two chambers, such as a multi-component mass with three or more components, the head part according to the US 5,647,510 A only to be fabricated under complex constructional measures. In addition, the amount of waste to be disposed compared to a conventional multi-chamber bag without headboard is much larger.

From the EP 0 976 458 A2 a film tube for a one-component mass is known with a head part having an abutment opening surrounding an abutment portion, wherein on the abutment portion an annular elevation is provided.

Presentation of the invention

The object of the invention is to provide a head part for a multi-chamber tubular bag, which on the one hand ensures a largely constant mixing ratio of two or more components of a chemical composition and on the other hand is easy and inexpensive to produce.

The object is solved by the features of the independent claim. Advantageous developments are set forth in the subclaims.

According to the invention, at least one in the direction of the coming into abutment Mehrkammerschlauchbeutels and at the same time aligned to elevation for narrowing an outlet region of at least one secondary chamber of the multi-chamber tubular bag in the applied state of the multi-chamber tubular bag.

As a result of the survey, which is formed for example as a projection, the outlet cross-section is at least partially narrowed and the outlet quantity of the at least one secondary chamber is throttled during the dispensing process of the respective component. As a result, a pressure difference is established between the one component in the main chamber and the at least one further component in the at least one secondary chamber. This pressure difference ensures that the flexible partition wall between the main chamber and the at least one secondary chamber is loaded only on tensile forces, so that they do not move unintentionally, or is deformed and thus the desired or output cross-sectional areas of the main chamber and the at least one secondary chamber on the entire application process remain. The pressure difference and thus the maintenance of the output cross-sectional areas can additionally be ensured by a suitable choice of viscosity or penetrometer value differences of the individual components relative to one another. As soon as the multi-chamber tube bag rests against the abutment section, it is opened and pressure is applied to the multi-chamber tube bag, e.g. B. by means of an extrusion piston, is generated due to the design of the inventive head part throughout the Auspressvorgangs a constant mixing ratio of the individual components to each other. This ensures a constant mixing ratio of the individual components, even with multiple application of small amounts of multicomponent mass.

The main chamber of the multi-chamber tubular bag usually has a larger cross-sectional area than the at least one secondary chamber. The at least one secondary chamber is advantageously arranged in an outer region of the multi-chamber tubular bag. The multi-chamber tubular bag advantageously has a substantially circular overall cross-section, wherein the at least one secondary chamber likewise has an approximately circular cross-section.

Preferably, the elevation is arranged in the area of the entire circumference of the extrusion opening on the contact section. This embodiment of the head part according to the invention is advantageous, in particular in multi-chamber tubular bags, which advantageously have more than two secondary chambers. In a variant of this, based on the number of secondary chambers present in the multi-chamber tubular bag and based on their number, eg. B. in a multi-chamber tubular bag having a substantially circular overall cross-section radial, Extension formed correspondingly shaped elevations on the contact section. When arranging the head part of the multi-chamber tubular bag, or the multi-chamber tubular bag on the head part, they are arranged correspondingly aligned with each other.

Preferably, the ejection opening is arranged to allow a substantially linear exit of the component from the main chamber in the applied state of the multi-chamber tubular bag on the head part based on the position of the outlet of the main chamber aligned on the contact section. If the main chamber, for example in a multi-chamber tubular bag with a substantially circular cross-section, is arranged substantially centrally in this, the ejection opening is advantageously provided in the center of the contact section for enabling a largely linear exit of the component from the main chamber. In a substantially lateral arrangement of the main chamber, the squeezing opening is provided according to the position of the exit of the main chamber at the abutment portion. The arranged on the position of the exit of the main chamber arrangement of the outlet opening ensures the substantially direct application of the predetermined amount of the one component from the main chamber in combination with the throttled mass flow of the at least one further component from the at least one secondary chamber.

Advantageously, the head part is fixed to the multi-chamber tubular bag. The head part, for example, at the multi-chamber tube bag z. B. glued or welded on site. Preferably, the head part is prefabricated with the multi-chamber tubular bag. This allows connection of the header to the multi-chamber tubular bag under controlled conditions, which improves the correct alignment of the header at the multi-chambered tubular bag, or the correct alignment of the multi-compartment tubular bag at the header and the quality of the connection to site creation. The serviceability of the multi-chamber tubular bag is also improved in a prefabrication compared to a preparation of the connection on site.

In a further advantageous embodiment, the head part is part of a Auspressgerätes. The head part according to the invention is formed, for example, on the end located in the pressing-out direction of the ejection device on the ejection device. In a variant of this, the head part according to the invention is introduced into a commercially available dispensing device before the multi-chamber tubular bag is introduced into a receiving space for the multi-chamber tubular bag of the dispensing device. The inventive headboard can be used several times in this embodiment again.

In a further advantageous embodiment, the head part is part of a cartridge for the multi-chamber tubular bag. The cartridge has z. Example, a tubular receptacle, which is provided at the lying in the direction of extrusion of the cartridge end with an opening for the auszubringende, multicomponent mass. The head part according to the invention is formed on the cartridge, for example, on the end lying in the direction of extrusion of the cartridge.

Preferably, the head part is formed as the bottom of the cartridge for the multi-chamber tubular bag. In this variant, the head part according to the invention is introduced into the receptacle of the cartridge before the introduction of the multi-chamber tubular bag. In this case, the cartridge can only have a stop on the end located in the direction of extrusion of the cartridge, which limits an axial displacement of the head part in the direction of extrusion of the cartridge. The inventive headboard can be used several times in this embodiment again.

In a further variant can be attached to an interchangeable, z. B. can be arranged on a cartridge mixing element an inner tube may be provided which takes over the function according to the inventive headboard. The mixing element has, for example, a connection with an internal thread and the inner tube is arranged coaxially with the discharge opening of the cartridge, so that the free end of the inner tube as elevation narrows the exit region of at least the at least one secondary chamber of the multi-chamber tubular bag in the applied state of the multi-chamber bag. The mixing element can also have an external thread for connecting the mixing element to an internal thread at the discharge opening of the cartridge, wherein the free end as elevation narrows the exit region of at least the at least one secondary chamber of the multi-chamber tubular bag in the applied state of the multi-chamber bag.

From the following detailed description and the totality of the claims, further advantageous embodiments and feature combinations of the invention result.

Brief description of the drawings

Fig. 1

Einen Längsschnitt in der Ebene I-I der Fig. 2 durch das erfindungsgemässe Kopfteil mit anliegendem Mehrkammerschlauchbeutel;

Fig. 2

eine Ansicht des in Fig. 1 gezeigten Kopfteils, gesehen aus der Ebene II-II der Fig. 1 ohne den Mehrkammerschlauchbeutel;

Fig. 3

eine Ansicht eines zweiten Ausführungsbeispiels des in Fig. 2 gezeigten erfindungsgemässen Kopfteils;

Fig. 4

einen Längsschnitt durch ein teilweise dargestelltes Auspressgerät mit einem weiteren Ausführungsbeispiel des erfindungsgemässen Kopfteils;

Fig. 5

einen vergrösserten Detailausschnitt durch ein Auspressgerät mit einer Variante des in Fig. 4 im Bereich X gezeigten Kopfteils;

Fig. 6

einen Längsschnitt durch eine Kartusche mit einem weiteren Ausführungsbeispiel des erfindungsgemässen Kopfteils; und

Fig. 7

einen vergrösserten Detailausschnitt durch eine Kartusche mit einer Variante des in Fig. 6 im Bereich Y gezeigten Kopfteils.

The invention will be explained in more detail below with reference to several embodiments. Show it:

Fig. 1

A longitudinal section in the plane II of Fig. 2 by the inventive headboard with adjoining multi-chamber tubular bag;

Fig. 2

a view of the in Fig. 1 shown head portion, seen from the level II-II of Fig. 1 without the multi-chamber tube bag;

Fig. 3

a view of a second embodiment of the in Fig. 2 shown inventive head part;

Fig. 4

a longitudinal section through a partially illustrated Auspressgerät with a further embodiment of the inventive head part;

Fig. 5

an enlarged detail through a Auspressgerät with a variant of in Fig. 4 in the area X shown headboard;

Fig. 6

a longitudinal section through a cartridge with a further embodiment of the inventive head part; and

Fig. 7

an enlarged detail through a cartouche with a variant of the in Fig. 6 in the area Y shown headboard.

Basically, the same parts are provided with the same reference numerals in the figures.

Ways to carry out the invention

In the Fig. 1 and Fig. 2 is a, on a multi-chamber tubular bag 1 factory-glued inventive head portion 11 shown. The multi-chamber tubular bag 1 for a three-component mass has a main chamber 2 and two, arranged on the outer periphery of the multi-chamber tubular bag 1 side chambers 3 and 4. In this embodiment, the multi-chamber tubular bag 1 in cross-section on a circular cross-sectional area.

The head part 11 has a contact section 12 and an ejection opening 13. At the Auspressöffnung 13, a connection for a z. B. be screwed mixer element can be provided. Furthermore, the head part 11 has a collar 15 which at least partially surrounds the end region of the multi-chamber tubular bag 1. At the abutment portion 12 four, formed as projections projections 14 are formed, which are aligned in the direction of the multi-chamber tubular bag 1. The elevations 14 narrow the outlet region 5 of the auxiliary chamber 3, or the outlet region 6 of the auxiliary chamber 4 in the applied state of the multi-chamber tubular bag 1 on the head part 11.

Upon pressurization and after opening the multi-chamber tubular bag 1, the component in the main chamber 2 due to the centric arrangement of the extrusion 13 at the contact section 12 largely linearly emerge. The components from the secondary chambers 3 and 4, however, are brought together as a result of the restriction in the outlet regions 5, 6 and throttled in the discharge opening 13 with the component from the main chamber 2 and fed together to a mixing element for producing the ready-to-use, multi-component mass. The pressure difference generated in the chambers 2, 3 and 4 of the multi-chamber tubular bag 1 as a result of the throttling in the outlet regions 5 and 6 ensures the orientation of the partitions in the multi-chamber tubular bag 1 during the entire dispensing operation, so that a constant mixing ratio of the components is ensured.

In Fig. 3 is a variant of the head part 11 after Fig. 2 shown. The head part 21 has on the contact portion 22 as a projection formed, annular around the extrusion opening 23 extending survey 24, which in the region of the extrusion opening 23 radially outwardly offset, is formed along the entire circumference.

In the Fig. 4 a discharge device 31 is shown with a receiving space 34 for a two-chamber tube bag 35, which at its end in the direction of ejection A has an inventive, integrally connected to the Auspressgerät 31 head portion 32. At the head part 32, a mixing element 33 is arranged. The head part 32 has at the, the receiving space 34 side facing a survey 36.

Fig. 5 shows a variant of the Auspressgerätes 31 after Fig. 4 in which the head part 42 is inserted as a separate part in the receiving space 44 of the Auspressgerätes 41 before inserting the multi-chamber tubular bag.

In the Fig. 6 a cartridge 51 is shown with a receiving space 54 for a two-chambered tubular bag 55, which at its end in the direction of ejection A has an inventive, integrally connected to the cartridge 51 head portion 52. The head part 52 has at the, the receiving space 54 side facing a survey 56.

Fig. 7 shows a variant of the cartridge 51 after Fig. 6 in that the head part 62 is inserted as a separate part into the receiving space 64 of the cartridge 61 before the insertion of the multi-chamber tubular bag. At the end in the ejection direction A, the cartridge 61 is provided with a stop 67, which limits the axial displacement of the head part 62 in the extrusion direction A.

Claims (7)

1. Multi-compartmented tubular bag (1; 35; 55) containing an expellable multi-component substance and having an end-piece (11; 32; 42; 52; 62), which multi-compartmented tubular bag (1; 35; 55) has a main compartment (2) for a first component and at least one ancillary compartment (3, 4) for a further component, the end-piece (11; 32; 42; 52; 62) having a substantially planar portion (12; 22), surrounding an expulsion opening (13; 23), for the multi-compartmented tubular bag (1; 35; 55) to abut against, characterised in that there is provided on the portion for abutment (12; 22) at least one elevation (14; 24; 36; 56) for constricting an outlet region (5, 6) at least of the at least one ancillary compartment (3, 4) of the multi-compartmented tubular bag (1; 35; 55) when the multi-compartmented tubular bag (1; 35; 55) is in the abutting state, which elevation (14; 24; 36; 56) is aligned in the same direction as the multi-compartmented tubular bag (1; 35; 55) as it comes into abutment and, at the same time, towards the latter.
2. Multi-compartmented tubular bag according to claim 1, characterised in that the elevation (24) is arranged on the portion for abutment (22) in the region around the entire circumference of the expulsion opening (23).
3. Multi-compartmented tubular bag according to claim 1 or 2, characterised in that, to enable the component from the main compartment (2) to emerge largely linearly when the multi-compartmented tubular bag (1; 35; 55) is in the abutting state against the portion for abutment (12; 22), the expulsion opening (13; 23) is arranged in the end-piece (11; 32; 42; 52; 62) to be positioned in the portion for abutment (12; 22) as dictated by the position of the outlet of the main compartment (2).
4. Multi-compartmented tubular bag according to one of claims 1 to 3, characterised in that the end-piece (11; 21) is fixed to the multi-compartmented tubular bag (1) and, as an option, is pre-assembled thereto.
5. Multi-compartmented tubular bag according to one of claims 1 to 3, characterised in that the end-piece (32; 42) is part of an expulsion device (31; 41).
6. Multi-compartmented tubular bag according to one of claims 1 to 3, characterised in that the end-piece (52; 62) is part of a cartridge (51; 61) for the multi-compartmented tubular bag (55).
7. Multi-compartmented tubular bag according to claim 6, characterised in that the end-piece (62) takes the form of the front end-wall of the cartridge (51) for the multi-compartmented tubular bag (55).

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