EP2415958A2 - Method for producing a multi-pane insulating glass element - Google Patents

Abstract

The method involves arranging two individual glass elements (2, 3) under formation of an intermediate space. The intermediate space is partially filled with gas that is different from air by a gas filling device (14). The intermediate space is sealed with the individual glass elements under formation of an edge bond. A plastic film (5) is inserted in the intermediate space against gas flow by the gas filling device. The plastic film is bidirectionally subjected with tensile strength during insertion. The glass elements are held at a distance of 10 mm to the plastic film. Independent claims are also included for the following: (1) a gas filling device for producing a multi-pane insulating glass element (2) a gas-filled multi-pane insulating glass element comprising individual glass elements.

Description

The invention relates to a method for producing a multi-pane insulating glass element, wherein at least two individual glass elements are arranged to form a gap to each other and in the space at least one plastic film is introduced, wherein the space in a gas filling device with a different gas at least partially filled and sealed with the formation of a marginal composite with the two individual glass elements and, a gas filling device for producing a multi-pane insulating glass element comprising a first plate member and a second plate member, wherein the first plate member spaced from the second plate member is arranged to form a gap, and a gas supply device for supplying a Air of different gas into the gap, and a gas-filled multi-pane insulating glass element comprising a first glass element and thus an edge bond ve a second glass element, wherein between the first glass element and the second glass element, a gap is formed, which is at least partially filled with a gas other than air, the edge seal comprises at least one spacer and a sealant, and arranged in the gap in the at least one plastic film is.

Multi-pane insulating glass elements are today standard in building construction for reasons of building insulation. In the simplest form they are designed as a double-pane insulating glass. In order to achieve an even better thermal insulation, they can be filled with a gas which has a lower thermal conductivity than air or are already known multi-pane insulating glass elements with more than two glass panes, for example three. Since the central glass pane normally has no static function but only the function of separating the space between the outer glass panes, to prevent the direct heat conduction from the front to the rear glass pane, already proposed multi-pane insulating glass elements, in which the middle glass pane replaced by a plastic film. In addition, this plastic film may also be coated or tinted to reduce the passage of light through the insulating glass element.

For example, this describes DE 30 43 973 A1 a method for producing a multi-pane insulating glass unit, which is formed of two by a pair of circumferential spacers spaced and sealed against each other glass sheets and a stretched between the spacers plastic film, wherein the spaces between the discs and the plastic film with each other , As the plastic film, a heat-shrinkable film is used, and after assembly, the insulating glass unit is heated so that the film shrinks and becomes taut and wrinkle-free.

Other variants of insulating glass units with plastic films are in the EP 1 573 162 B1 , of the EP 0 485 505 B1 , of the EP 0 470 374 A1 , of the EP 0 410 927 A1 , of the EP 0 226 151 B1 , of the EP 0 117 885 A1 , of the DE 28 50 749 A1 and the DE 23 13 278 A1 described.

It is the object of the present invention to improve or simplify the production of such multi-pane insulating glass elements or to specify an improved multi-pane insulating glass element.

This object of the invention is independently achieved in that in the aforementioned method, the film is introduced into the gas filling in the space in the gas filling mentioned above between or in the region of the first or second plate member, a feeding device for supplying a plastic film in the space is arranged and that in the aforementioned multi-pane insulating glass element of the edge bond over the entire circumference of the glass element is free of access openings to the gap.

The incorporation of the plastic film in the gas filling device, which is normally present in a production line of a Mehrscheiebn insulating glass production, the integration of the supply of the plastic film is improved in the insulating glass production, whereby cycle times for producing such multi-pane insulating glass elements can be shortened. In addition, it is achieved that the edge bond must have no openings for the gas filling of the gap between the glass elements, which on the one hand no subsequent closure of these openings must be done, which ebenfallls the cycle times can be reduced, and thus the gas tightness of the multi-pane insulating glass element can be improved. In addition, it is achieved by the supply of the plastic film in the gas filling that in this compared to the ambient atmosphere of the production line a much lower concentration of suspended solids or dust particles is present, so quasi "clean room conditions" prevail, whereby the production of multi-pane insulating glass element also be simplified can, because the plastic films used are often electrostatically charged due to the manipulation of these films, and thus attract dust particles. Since dust particles interfere on the surface of the plastic film in the finished insulating glass window and thus a higher reject production is connected, separate measures must be taken in the conventional production of insulating glass to avoid the dust loading of the plastic film. In the method according to the invention or with the device according to the invention, however, this dust load can be avoided or at least significantly reduced.

The last-mentioned effect of the method according to the invention with respect to the dust loading of the plastic film is further improved if the plastic film is introduced during the gas filling, since in this case the gas flow causes the blowing off of the dust particles from the plastic film or the blowing out of the gas filling device the gas stream flowing past the surface of the plastic film can prevent the accumulation of dust particles on this surface.

But it is also possible that the plastic film is introduced before the gas filling and then the gas filling of the gap is carried out from both sides of the plastic film. It is thus achieved that the plastic film is applied uniformly from both sides with the gas flow, whereby the plastic film is already arranged evenly planar, before it is stretched in a subsequent gas filling process step to achieve the wrinkle-free formation of the plastic film. In addition, in this procedure or with this embodiment of the gas filling device is achieved that both surfaces of the plastic film can be better protected from the dust load. For this purpose, the gas filling device can be provided with a correspondingly wide outlet opening for the gas, or at least two gas outlet openings can also be arranged, one each Gas outlet opening is associated with a gap between the plastic film and the respective adjacent glass element.

It should be mentioned at this point, the two-sided filling of the gap can also be done in the embodiment of the method in which the plastic film takes place during the gas filling of the gap between the two glass elements.

It is also advantageous if the plastic film is introduced against the gas stream, since thus the avoidance of dust loading can be improved because the gap is already divided into two smaller spaces when the plastic film comes into contact with the gas stream, and thus the Available volume for a swirling of the dust particles is lower. In addition, dust particles can thus be removed against the feed direction of the plastic film, and the already "protected" by the gas stream - and thus protected - plastic film from further dust exposure during insertion protected.

The plastic film can be unwound for the supply of a roll, so that a larger supply of plastic film is available at the Gasbefüllinrichtung for window production, which in turn can be shortened cycle time. Moreover, this type of feed is structurally simple to implement and can be incorporated into a control and / or control system of the production line.

But it is also possible that the plastic film is subjected at least during the introduction with a tensile stress, whereby the wrinkle-free arrangement of the plastic film in the finished multiple insulating glass element is improved or supported. Moreover, thus the positioning of the plastic film in the space of the multiple insulating glass element with higher accuracy is feasible.

It is particularly advantageous if the plastic film is subjected to the tensile stress bidirectional, since thus the effects mentioned are further improved.

According to another embodiment of the method is provided that the plastic film is held by a frame member is introduced, whereby also the Positioning of the plastic film in the space and also the handling of the plastic film can be simplified during the feeding.

It is particularly advantageous if the frame element is at least partially formed by one or more spacers for forming the edge bond between the two glass elements, since thus the production can be simplified by eliminating the need for removing the frame member.

A better protection of the plastic film from dust loading is achieved when at least one gas jet is directed towards the plastic film during insertion, even if there is a risk that the plastic film bulges under certain circumstances, whereby the tightening after gas filling difficult could. But this fact of bulging can also be used to determine by means of a measuring system, such as a photocell, this and regress when it comes with a stronger gas jet again, this being carried out advantageously automated. As a result of this design, the positioning of the plastic film in the gas filling device can be improved.

To avoid vortices in the gas filling device, in order to prevent, for example, a turbulence of dust particles, it is advantageous if the gas is supplied with laminar flow at least in the intermediate space between the glass elements.

It can also be provided that the glass elements are kept at a distance from the plastic film of at least 10 mm during the gas filling, in order to improve a dust discharge from the intermediate space.

The plastic film can be thermally tensioned at a temperature above room temperature after the gas filling of the gap between the glass elements, wherein it is advantageous if the gas filling of the gap is carried out with a temperature of the filling gas, which is above the room temperature and a maximum of 50% of Temperature of the thermal tensioning corresponds, so the gas filling is carried out with a warm gas, whereby the subsequent thermal tensioning the plastic film is supported. However, a higher filling pressure should be maintained, since on the other hand there is a risk that the multi-pane insulating glass element will bulge after cooling of the gas.

According to one embodiment of the gas filling device is provided that it is designed as a gas filling press, wherein the first and the second plate member form a first and a second pressure plate and at least one of the two press plates is adjustable relative to the other press plate. It can thus be ready mounted so that the plastic film in this gas filling, which can be dispensed with an additional station in the production line and thus turn the cycle time can be shortened.

As already mentioned above, the plastic film can be introduced into the gas filling device with the aid of a frame element. It is in view of this embodiment of this gas filling advantageous if this frame member for holding the plastic film, at least partially forms a seal of the gap between the first and the second plate member, whereby the process flow can be simplified because already with the positioning of the frame element in the gas filling the condition of the gas-tight completion of the gas filling device are given by subsequently only the two plate elements must be moved to their closed position.

For reasons already mentioned above, it is advantageous if at least one additional gas outlet nozzle is arranged in the gas filling device, with a gas outlet opening directed in the direction of the plastic film.

For a better understanding of the invention, this will be explained in more detail with reference to the following figures.

Fig. 1

ein Mehrscheiben-Isolierglaselement in Seitenansicht geschnitten;

Fig. 2

eine Gasbefülleinrichtung in Seitenansicht geschnitten;

Fig. 3

einen Teil einer Ausführungsvariante der Gasbefülleinrichtung mit einem Rahmenelement zur Einbringung der Kunststofffolie in Frontansicht:

Fig. 4

eine Einbringvorrichtung zum Einbringen der Kunststofffolie in die Gasbefülleinrichtung mit bidirektionaler Spannung der Kunststofffolie.

Each shows in a schematically simplified representation:

Fig. 1

a multi-pane insulating glass element cut in side view;

Fig. 2

a Gasbefülleinrichtung cut in side view;

Fig. 3

a part of a variant of the gas filling device with a frame member for introducing the plastic film in front view:

Fig. 4

a delivery device for introducing the plastic film into the gas filling device with bidirectional tension of the plastic film.

By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be mutatis mutandis to the same parts with the same reference numerals or component names. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and are to be transferred to the new situation mutatis mutandis when a change in position. Furthermore, individual features or combinations of features from the various exemplary embodiments shown and described can also represent separate solutions according to the invention.

In Fig. 1 is a multi-pane insulating glass element 1 shown cut in side view. In the simplest embodiment, this multi-pane insulating glass element 1 consists of a first single glass element 2, a second single glass element 3, which is spaced apart to form a gap 4 to the first single glass element 2, a plastic film 5, which is arranged in the intermediate space 4 and this in two subdivided smaller spaces, namely a front space which faces the individual glass element 2, and a rear space which faces the single glass element 3, and an edge seal 6 formed between the two individual glass elements 2, 3 along a circumference 7 of the multi-pane insulating glass element 1 is and a spacer 8, which optionally may have a cavity, wherein the cavity is optionally filled with a molecular sieve 9, and which is connected via a primary sealing element 10 with the two glass elements 2, 3, wherein an additional sealing element 11 at the rear Eite of the spacer 8 for sealing the gap between the two individual glass elements 2, 3 may be arranged along the circumference.

The basic structure of such a multi-pane insulating glass element 1 is already known from the prior art, for example from the documents mentioned above.

The primary sealing element 10 may for example be formed from a butyl rubber, the sealing element 11, for example by a silicone.

Furthermore, the spacer 8 may be made of metal or a thermoplastic or thermosetting plastic.

There is also the possibility that the spacer 8 is formed entirely by a thermoplastic material and thus at the same time can also form the primary sealing element 10, it also being possible for a molecular sieve and / or a metal reinforcement to be contained in this thermoplastic polymer.

The spacer 8 is divided in the present embodiment into two part spacers 12, 13, wherein the plastic film 5 is clamped between the two part spacers 12, 13 and thus held by them. For this purpose, between the plastic film 5 and the two part spacers 12, 13 each also an adhesive strip or an adhesive layer may be arranged to additionally glue the plastic film 5 with the part spacers 12, 13.

As already mentioned above, the plastic film 5 can be made uncoated or coated, for example with a reflective layer, so as to reflect a higher proportion of incident light. Such coatings are known in principle from the prior art, as cited above.

Although in Fig. 1 only a three-layer variant is shown with the two individual glass elements 2, 3 and the plastic film 5 between them, of course, there is the possibility that more than one plastic film 5, for example, two, three, four, etc. are arranged in the space 4, in which case the spacer 8 may optionally be divided into more than two part spacers 12, 13. In addition, there is also the possibility that more than two individual glass elements 2, 3 are arranged, for example three or four.

Due to the inventive method for producing this multi-pane insulating glass element 1, this has an edge seal 6, which has no breakthroughs or subsequently closed openings over the entire circumference 7, which are used in the prior art, after assembly of the multi-pane Insulating glass element 1 to fill the gap 4 with a gas. In other words, therefore, the edge bond 6 in the multi-pane insulating glass element 1 according to the invention over the entire circumference of the individual glass elements 2, 3 free of access openings to the gap. 4

With the help of the gas, which is filled in the intermediate space 4, the thermal conductivity of the multi-pane insulating glass element 1 is to be reduced. Accordingly, a gas is used which is heavier than air, as their mobility is reduced by the heavier gas molecules and thus the thermal conductivity and the heat transfer through the multi-pane insulating glass element 1 is reduced. Useful gases are, for example, argon or xenon, as known in the art.

It has been stated above that the gap 4 is at least partially filled with this gas. By "at least partially" it is meant that complete filling of the gap 4 with the gas different from air normally does not occur in the insulating glass production due to the long filling times, but a degree of filling of the gap 4 with the gas is at least 90% of the available volume is. Of course, there is the possibility of complete, that is 100% filling of the gap 4 with the gas different from air.

In Fig. 2 is a first embodiment of a gas filling device 14 for producing the multi-pane insulating glass element 1 according to Fig. 1 shown. In the preferred embodiment, this gas filling device 14 is part of a production line for the production of multi-pane insulating glass elements 1, as known from the prior art. For example, shows the basic structure of a gas filling device 14 the WO 2006/002975 A1 ,

Essentially, the gas filling device 14 can be understood as a closable container enclosing a volume, wherein in this volume the individual glass elements 2, 3 are arranged for filling. For this purpose, the gas filling device 14 comprises a first, front plate member 15, a spaced second, rear plate member 16 and one or more sealing elements which are arranged on the circumference of the two plate members 15, 16, to a gap 17 between the two plate members 15, 16 during to be able to complete the gas filling at least approximately gas-tight. The two plate elements 15, 16 or at least one plate element 15, 16 can be part of a frame 18 or attached to this frame 18.

Furthermore, the gas filling device 14 according to Fig. 2 a conveyor device 19, for example a belt or roller conveyor, since, as already mentioned, this gas filling device 14 in the preferred embodiment of the invention part of a production line for producing multi-pane insulating glass elements 1 and thus the automatic supply of the individual glass elements 2, 3 in the gas filling 14 is enabled.

As in Fig. 2 4, the gas filling device 14 may be inclined relative to the horizontal, whereby the second, rear individual glass element 3 may have to be in abutment with the rear plate element 16 without having to make any further provision. The individual glass element 2, on the other hand, is held by the first, front plate element 15, for example by means of negative pressure, for which purpose at least one recess 20 can be formed in this plate element 15 in order to at least partially build up a negative pressure between the individual glass element 2 and the first, front plate element 15 to be able to.

Of course, however, the vertical arrangement, that is, standing non-inclined arrangement, the gas filling device 14, i. the plate elements 15, 16, possible.

For the closing movement of the gas filling device 14, the first, front plate element 15 is arranged relative to the second, rear plate member 16 adjustable on the frame 18, for example via corresponding joints (not shown) articulated, as is also known from the prior art, so so for the closing movement, the first, front plate element 15 can be pivoted from an open position into a closed position against the second, rear plate element 16. Furthermore, at the gas filling device 14 a gas supply device 21 is arranged with at least one gas outlet opening 22, so as to be able to introduce the gas different from the air into the intermediate space 17 between the two plate elements 15, 16.

In the illustrated embodiment, this gas outlet opening 22 is located in the lower area just above the conveyor 19 in the gas filling 14, in principle, this gas outlet opening 22 but also at any other, arbitrary position in the gas filling 14 are arranged, although the arrangement below in the gas filling 14th , as will be explained below, the preferred embodiment is.

Furthermore, there is the possibility that not only one gas supply device 21 or only one gas outlet opening 22 are arranged on the gas filling device 14, but several, for example two, as shown in FIG Fig. 2 is shown, or even more than two, for example, three, four, five, etc. These gas outlet openings 22 may be arranged distributed over the height of the gap 17.

According to the invention, provision is now made for a supply device 23 for the plastic film 5 to be arranged in the intermediate space 17 of the gas filling device 14 in the region of the second plate element 16. This is in the embodiment according to Fig. 2 as a suspension for a roll on which the wound, that is, the rolled-up plastic film 5 can be arranged, carried out, wherein this supply device 23 may also be arranged on the frame 18 of the gas filling device 14. In principle, there is also the possibility that this is arranged in the region of the first, front plate element 15 or within the intermediate space 17, as shown in FIG Fig. 2 is indicated by dashed lines, for example, on the first or second plate member 15, 16 may be attached. In the event that several plastic films 5 are used for the production of the multi-pane insulating glass element 1, of course, there is the possibility of arranging several of these feeders 23. It is thus possible with the gas filling device 14 according to the invention that the plastic film 5 in this in the gap 4 between the two individual glass elements 2, 3 of the multi-pane insulating glass element 1 is introduced, whereby a better integration of the supply of this plastic film 5 in the production line for producing the multi-pane insulating glass element 1 is achieved.

The feeding of the plastic film 5 can take place during the gas filling with the gas filling device 14 closed, in which case between the two plate elements 15, 16, a corresponding gap for carrying the plastic film 5 at the upper end, when the feeder 23 as in Fig. 2 shown above the plate members 15, 16 is arranged, which gap may optionally with a sealing element, such as brushes, which may also be applied to the surfaces of the plastic film 5, sealed, although this is not mandatory because already mentioned, a gas is used which is heavier than air and in the preferred embodiment of this gas from below, for example as in Fig. 2 is shown, is fed so that a gas loss over this gap does not or hardly occurs. Of course, with the plastic sheet 5 feeder 23 disposed within the space 17 between the two plate members 15, 16, it is possible to completely close the gas filling means 14 during gas filling.

But there is also the possibility that the plastic film 5 is introduced before the gas filling in the intermediate space 17, that is, the gap 4 between the two individual glass elements 2, 3 and then the gas filling takes place, in which case it is advantageous if on Both sides, that is, in the region of a front surface 24 and in the region of a rear surface 25 of the plastic film each have their own gas outlet opening 22 is arranged, as also in Fig. 2 is shown, since so that the gas is supplied evenly from both sides of the plastic film 5 and this thus in view of the tensioning of the plastic film 5 to form a wrinkle-free arrangement of this plastic film 5 within the multi-pane insulating glass element 1 is not or less bulging, in addition also possible dust particles that adhere to the surfaces 24, 25 of the plastic film 5 can be better blown off.

Although it is possible in principle that the plastic film 5 with the gas stream, that is introduced in the direction of the exiting gas, a variant is preferred in which the plastic film 5 is introduced against the gas stream, so for example as in Fig. 2 shown, the gas outlet openings 22 are arranged in the lower region of the gas filling device 14 and the feed device 23 for the plastic film 5, however, is arranged in the upper region of the gas filling device.

In principle, however, there is also the possibility that the plastic film is supplied from below or in a lower region of the gas filling device 14.

In the preferred embodiment of the gas filling device 14, this is simultaneously designed as a gas filling press, wherein the first plate member 15 and the second plate member 16 are each formed as press plates and they are relatively mutually adjustable, said relative adjustability generally by a closing movement of at least one of these plate elements 15, 16, as already mentioned above, or by the movement of the two plate elements 15, 16 can be made to each other. This embodiment variant of the invention, that is, the gas filling device 14, has the advantage that the multi-pane insulating glass element 1 after leaving the gas filling device 14 is already substantially finished, ie the edge composite 6 is already formed and the plastic film 5 is held therein. For this case, the two part spacers 12, 13 can be preassembled on the two individual glass elements 2, 3, then the plastic film 5 are introduced and during the closing movement of the gas filling device 14, ie the gas filling press, these two part spacers 12, 13 with the inclusion of the plastic film. 5 be moved toward each other, whereby the edge seal 6 is at least partially formed (the sealing element 11, that is, the secondary sealing element can be subsequently attached to the periphery 7 of the multi-pane insulating glass element 1, so need not necessarily be mounted in the gas filling press, but can be mounted therein ). Understandably, the final closing movement of the gas filling device for forming the edge composite 6 takes place when the plastic film 5 is completely inserted into the intermediate space 4 and this is at least approximately completely filled with the gas different from the air.

With regard to the supply of the plastic film 5, that is, the introduction of this in the gap 4 or space 17 of the gas filling device 14, there is the possibility that when this is unwound from a roll, this role is connected to a drive, wherein a front end the plastic film 5 with a gripping member 26 is brought down into the gap 17, wherein the gripping member 26 may be performed in the gas filling 14 accordingly to perform the removal of the plastic film 5 from the roll with higher accuracy. In this embodiment of the invention, therefore, no tensile stress is exerted on the plastic film 5 during the drawing. In the preferred Embodiment of the invention, however, this is subjected to a tensile stress, so the role of the feeder 23 for the plastic film 5 is not driven or driven at a speed which is less than the speed at which the gripping element 26, the plastic film 5 subtracts, so only a supportive Drive for the role is present in order to achieve a better alignment of the plastic film 5 in the space 4 between the two individual glass elements 2, 3 with respect to the wrinkle-free tension of the plastic film 5.

In Fig. 3 is another embodiment of the gas filling device 14 shown in front view, was dispensed with the representation of the front plate member 15 for reasons of clarity, so only the rear plate member 16 with the single glass pane 3, which carries the part spacer 13, viewed over its circumference without interruption is formed (of course, except for the impact between the front and the rear end of the part spacer 13, although it is also possible that the part spacers 12, 13 can be sprayed or extruded and in this case, in fact, a complete training without interruption of the part spacer 12th , 13), as well as the conveying device 19 and sealing elements 27 to 29, which are used for the at least partial sealing of the intermediate space 17 (FIG. Fig. 2 ) between the two plate elements 15, 16 are shown.

With regard to the sealing elements 27 to 29, it should be noted that these can be arranged in the gas filling device 14 in the region of the end faces of these plate elements 14, 15 or else can be arranged between these two plate elements 14, 15. Furthermore, there is the possibility that the conveyor 19 forms a part of the sealing of the intermediate space 17 of the gas filling device 14.

In this embodiment of the gas filling device 14, the plastic film 5 is clamped on a frame element 30 in the intermediate space 17 of the gas filling device 14 (FIG. Fig. 2 ), that is to say the intermediate space 4 between the two individual glass elements 2, 3 (FIG. Fig. 1 ) is supplied. This frame member 30 may be separable or designed as a fixed frame of individual frame profiles. For clamping the plastic film 5, this frame member 30 corresponding clamping means, such as brackets, etc. have. Likewise, the frame profiles, that is, the frame member 30 itself, in two parts with be arranged side by side profile elements, so that the plastic film 5 between the two sub-frame of the frame member 30 can be arranged. It is thus cut in this embodiment, the plastic film 5 to the size to be used accordingly and stretched on the frame member 30. This frame element 30 itself can be fed automatically into the intermediate space 17 together with the plastic film 5, for example by lateral movement of this plastic film, ie lateral insertion, into the intermediate space 17 by means of appropriate grippers etc. or by insertion from above.

It is achieved in this embodiment that the plastic film 5 bi-directionally applied with tensile stress in the space 17 of the gas filling device 14 can be introduced.

According to one embodiment, there is the possibility that the frame member 30 by the spacer 8, that is in particular the two part spacers 12, 13, which are arranged in the region of the circumference of the plastic film 5 and connected thereto, for example, are glued, is formed. In this embodiment, therefore, the previous assembly of the part spacers 12, 13 and the spacer 8 to the individual glass elements 2, 3 is not required.

According to another embodiment, it is possible that the frame member 30 at least partially forms the seal for at least approximately gas-tight completion of the gap 17 of the gas filling 14, so that may be waived, if necessary, entirely on the additional sealing elements 27 to 29.

Fig. 4 shows a variant embodiment of the possibility of introducing the plastic film 5 with bidirectional bias, namely by the plastic film 5 is in turn unrolled from a roll or unwound and by means of the gripping member 26 in the intermediate space 17 (FIG. Fig. 2 In this case, in addition, lateral gripping elements 31, 32 clamp the plastic film 5 in one direction at least approximately orthogonally to the feed direction of the plastic film 5, that is to say subject it to tensile stress. These gripping elements 31, 32 are preferably guided in the gas filling device 14 in corresponding guides and perform a vertical movement during the plastic film 5 down through. In this case, it is also possible to arrange a plurality of these gripping elements 31, 32 over the height of the gas filling device 14. It should also be noted that the Fig. 4 is merely a schematic representation, so the size representation, in particular the gripping elements 31, 32 has no limiting effect.

According to one embodiment variant of the invention, the gas outlet opening 22 or the gas outlet openings 22 can be arranged such that the gas jet issuing therefrom is directed in the direction of the plastic film 5, that is to say the surface 24, 25 for the above reasons.

With regard to the feed rate of the gas itself into the intermediate space 17 of the gas filling device 14, that is to say the intermediate space 4 between the two glass elements 2, 3, there are in principle no restrictions. However, it is preferred if this speed is chosen so that the gas with laminar flow at least in the space 4 between the two glass elements 2, 3 on the plastic film 5, that is, the two surfaces 24, 25 along sweeps, thus a turbulence of possibly To avoid adhering dust particles on the plastic film 5 after blowing off.

In order to facilitate the discharge of possibly existing dust particles, there is the possibility that the glass elements 2, 3 are held during the gas filling at a distance from the plastic film of at least 10 mm.

It should be mentioned at this point that the individual glass elements 2, 3, that is, at least one of the individual glass elements 2, 3, not necessarily have to be designed as individual glass panes, but that at least one of these individual glass elements 2, 3, for example, by a laminated glass of two or more Single glass panes without gap with interposed plastic film, so in the form of a safety glass, as this is known in the art, may be formed.

In the event that the plastic film 5 after assembly of the multi-pane insulating glass element 1, so after the formation of the edge bond 6, thermally tensioned, as for example, in the above-mentioned DE 30 43 973 C2 this thermal tensioning is done at a temperature above room temperature, wherein this temperature is selected as a function of the plastic film 5 used, it may be advantageous if the gas filling of the intermediate space 4 between the two individual glass elements 2, 3 is carried out with the filling gas at a temperature of the filling gas which is likewise above the room temperature, but maximum 50% of the temperature of the thermal stressing, as already stated above.

As the plastic film 5, any film suitable for this purpose can be used. However, preference is given to a polyester film, in particular a polyethylene terephthalate film, which is preferably stretched bidirectionally in order to allow thermal stretching. This plastic film 5 may have a film thickness in the range between 13 microns and 150 microns, for example, 35 microns or 50 microns.

The embodiments show possible embodiments of the gas filling device 14, wherein it should be noted at this point that the invention is not limited to the specifically illustrated embodiments thereof, but rather also various combinations of the individual embodiments are mutually possible and this variation possibility due to the teaching of technical action representational invention in the skill of those skilled in this technical field.

1

Mehrscheiben-Isolierglaselement

2

Einzelglaselement

3

Einzelglaselement

4

Zwischenraum

5

Kunststofffolie

6

Randverbund

7

Umfang

8

Abstandhalter

9

Molekularsieb

10

Primärdichtelement

11

Dichtelement

12

Teilabstandhalter

13

Teilabstandhalter

14

Gasbefülleinrichtung

15

Plattenelement

16

Plattenelement

17

Zwischenraum

18

Gestell

19

Fördervorrichtung

20

Ausnehmung

21

Gaszuführvorrichtung

22

Gasaustrittsöffnung

23

Zuführvorrichtung

24

Oberfläche

25

Oberfläche

26

Greifelement

27

Abdichtelement

28

Abdichtelement

29

Abdichtelement

30

Rahmenelement

31

Greifelement

32

Greifelement

For the sake of order, it should finally be pointed out that, for better understanding of the structure of the gas filling device 14 or of the multi-pane insulating glass element 1, these or their components have been shown partially unevenly and / or enlarged and / or reduced in size. REFERENCE NUMBERS

1

Insulating glass element

2

Single glass element

3

Single glass element

4

gap

5

Plastic film

6

edge seal

7

scope

8th

spacer

9

molecular sieve

10

Primary sealing element

11

sealing element

12

Subspacer

13

Subspacer

14

Gasbefülleinrichtung

15

panel member

16

panel member

17

gap

18

frame

19

conveyor

20

recess

21

gas feed

22

Gas outlet

23

feeder

24

surface

25

surface

26

gripping element

27

sealing

28

sealing

29

sealing

30

frame element

31

gripping element

32

gripping element

Claims (18)

Method for producing a multi-pane insulating glass element (1), wherein at least two individual glass elements (2, 3) are arranged to form a gap (4) to each other and in the space (4) at least one plastic film (5) is introduced, and the gap (4) in a gas filling device (14) with a different gas to gas at least partially filled and sealed to form a marginal composite (6) with the two individual glass elements (2, 3), characterized in that the plastic film (5) in the gas filling (14) is introduced into the intermediate space (4). A method according to claim 1, characterized in that the plastic film (5) is introduced during the gas filling. A method according to claim 1, characterized in that the plastic film (5) is introduced before the gas filling and then the gas filling of the intermediate space (4) from both sides of the plastic film (5) is performed. A method according to claim 1 to 3, characterized in that the plastic film (5) is introduced against the gas stream. Method according to one of claims 1 to 4, characterized in that the plastic film (5) is unwound from a roll. Method according to one of claims 1 to 5, characterized in that the plastic film (5) is acted upon at least during the introduction of a tensile stress. A method according to claim 6, characterized in that the plastic film (5) is subjected to the tensile stress bidirectional. Method according to one of claims 1 to 4 or 6 or 7, characterized in that the plastic film (5) by a frame member (30) is kept held. A method according to claim 8, characterized in that the frame element (30) at least partially by one or more spacers (8) or part spacers (12, 13) for forming the edge bond (6) between the two individual glass elements (2, 3) is formed. Method according to one of claims 1 to 9, characterized in that at least one gas jet is directed in the direction of the plastic film (5). Method according to one of claims 1 to 10, characterized in that the gas is supplied with laminar flow at least in the intermediate space (4) between the individual glass elements (2, 3). Method according to one of claims 1 to 11, characterized in that the individual glass elements (2, 3) are kept during gas filling at a distance from the plastic film (5) of at least 10 mm. Method according to one of claims 1 to 12, characterized in that the plastic film (5) after the gas filling of the intermediate space (4) between the individual glass elements (2, 3) thermally stretched at a temperature above room temperature and that the gas filling of the space ( 4) is performed with a temperature of the filling gas, which is above the room temperature and which corresponds to a maximum of 50% of the temperature of the thermal stressing. A gas filling device (14) for producing a multi-pane insulating glass element (1) comprising a first plate element (14) and a second plate element (15), the first plate element (14) being spaced from the second plate element (15) to form a gap (17) is, and with a gas supply device (21) for supplying a gas other than air in the intermediate space (17), in particular for carrying out the method according to one of the preceding claims, characterized in that between or in the region of the first and / or the second plate member (15, 16) a supply device (23) for the supply of a plastic film (5) in the intermediate space (17) is arranged. Gas filling device (14) according to claim 14, characterized in that it is designed as Gasbefüllpresse, wherein the first and the second plate member (15, 16) form a first and a second pressure plate and at least one of the two press plates is adjustable relative to the other press plate , Gas filling device (14) according to claim 14 or 15, characterized in that it comprises a frame member (30) for holding the plastic film (5), wherein the frame member (5) at least partially a seal of the intermediate space (17) between the first and the second Plate element (15, 16) forms. Gas filling device (14) according to any one of claims 14 to 16, characterized in that at least one additional gas supply device (21) are arranged, with a direction of the plastic film (5) directed gas outlet opening (22). Gas-filled multi-pane insulating glass element (1) comprising a first individual glass element (2) and a second individual glass element (3) connected thereto via an edge bond (6), wherein a gap (4) between the first individual glass element (2) and the second individual glass element (3) is formed, which is at least partially filled with a gas different from air, the edge seal (6) comprises at least one spacer (9) and a sealing means, and in which in the intermediate space (4) at least one plastic film (5) is arranged, characterized characterized in that the edge seal (9) over the entire circumference (7) of the glass element is free of access openings to the intermediate space (4).

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