DK2839446T3

DK2839446T3 - INSULATION PANEL WITH ALARM LOOP

Info

Publication number: DK2839446T3
Application number: DK13707144.5T
Authority: DK
Inventors: Martin Lisiecki; Erol Ertugrul Sacu
Original assignee: Saint Gobain
Priority date: 2012-04-18
Filing date: 2013-02-25
Publication date: 2017-03-13
Also published as: WO2013156184A1; EP2839446B1; ES2611766T3; EP2839446A1

Description

Insulating Glazing Unit with Alarm Loop

The invention comprises an insulating glazing unit with an alarm loop, a method for its production, and its use.

The thermal conductivity of glass is lower by roughly a factor of 2 to 3 than that of concrete or similar building materials. However, since, in most cases, panes are designed significantly thinner than comparable elements made of brick or concrete, buildings frequently lose the greatest share of heat via external glazing. This effect is particularly significant in high-rise buildings with partial or complete glass fagades. The increased costs necessary for heating and air-conditioning systems make up a part of the maintenance costs of a building that must not be underestimated. Moreover, as a consequence of more stringent construction regulations, lower carbon dioxide emissions are required. An important approach to a solution for this involves insulating glazing unit units, without which, primarily as a result of increasingly rapidly rising prices of raw materials and more stringent environmental protection constraints, it is no longer possible to imagine the building construction sector. Consequently, insulating glazing units constitute an increasingly greater share of outward-directed glazings. Insulating glazing units include, as a rule, at least two panes of glass or polymeric materials. The panes are separated from each other by a gas or vacuum space defined by a spacer. The thermal insulating capacity of insulating glass is clearly higher than for single plane glass and can be even further increased and improved in triple glazing units or with special coatings. Thus, for example, silver-containing coatings enable reduced transmittance of infrared radiation and thus reduce heating of a building in the summer. In addition to the important property of thermal insulation, optical and aesthetic characteristics play an increasingly important role in the area of architectural glazing.

In particular in the case of buildings with an extensive glass exterior fagade, the insulating effect plays an important role not merely for reasons of cost. Since the thermal insulation of very thin glass is, as a rule, worse than masonry, improvements are necessary in this area.

As a consequence of rising crime numbers, in particular in the area of residential burglaries, further functional profiles are also increasingly added for exterior glazing. In addition to enhanced passive burger-proofing, an alarm function is also important in the event of a burglary attempt.

In principle, each additional component increases the complexity of an insulating glazing unit. In particular, generally speaking, all components leading from inside the glazing unit into the external area of the insulating glazing unit degrade the insulation effect of the glazing unit. Especially, the necessary connection points can cause penetration of moisture into the insulating glazing unit. In addition, the inert gas situated inside the insulating glazing unit, for example, nitrogen or argon, can easily escape. In addition to degradation of the insulation effect, the optical transparency and the overall appearance of the insulating glazing unit are frequently also degraded. Moreover, penetrating moisture can permanently compromise the functioning of an alarm loop, for example, by erosion. The alarm loop usually includes an electrically conductive print or wire. The alarm loop receives, in the activated state, a continuous quiescent current that is interrupted upon breakage of the pane. Possibly penetrating moisture can generate short-circuits and, thus, false alarms. DE 40 24 697 A1 discloses a watertight multipane insulating glass comprising at least two glass panes and a profile spacer. The seal is done by polyvinyl chloride films or coatings on the spacer. Additionally, the edge bonding can be done using a polyvinyl chloride-containing solution. EP 0 852 280 A1 discloses a spacer for multipane insulating glazing units. The spacer includes a metal foil on the bonding surface and fiberglass content in the plastic of the base element. DE 196 25 845 A1 discloses an insulating glazing unit with a spacer made of thermoplastic olefins. The spacer has a water vapor permeability rate of less than 1 g mm/mm2 - d as well as high tensile strength and Shore hardness. Furthermore, the spacer includes a gas tight film as a water vapor barrier. DE 10 2007 003 749 A1 discloses a glass breakage detector for a multipane insulating glass. The glass breakage detector consists of a detecting plate contactlessly coupled to a reader. The detecting plate includes a chip, an alarm loop connected to the chip, a chip antenna, and a read antenna. The chip antenna and the chip are mounted in or at the edge connection of the multipane insulating glass. DE 20 2006 020 185 U1 discloses an insulating glass unit in the form of an alarm glass pane. The alarm glass pane includes a prestressed pane that includes an electrically conductive structure in the edge region. The connection points of the conducting structure lying in the edge region of the insulating glazing, outside the insulating region. The edge region is preferably sealed with polysulfide. DE 197 48 868 discloses an insulating glazing unit with an alarm loop in accordance with the generic portion of claim 1, a method for producing such an insulating glazing unit, as well as a use as a burglar-proof glazing unit.

The object of the invention is to provide an insulating glazing unit that enables reliable and longterm stable contacting of an alarm loop. The alarm loop must both be shielded against moisture and also have sufficiently high electrical insulation.

The object of the present invention is accomplished according to the invention by an insulating glazing unit in accordance with the independent claim 1. Preferred embodiments are apparent from the subclaims. A method for producing the insulating glazing unit according to the invention and its use are apparent from further independent claims.

The insulating glazing unit with an alarm loop comprises at least a spacer between a first prestressed or partially prestressed pane and a second pane. The outer gap situated between the first prestressed or partially prestressed pane, the spacer, and the second pane is filled with an organic polysulfide, preferably hydrocarbons with disulfide bridge bonds. The spacer preferably contains a desiccant, preferably silica gels, molecular sieves, CaCI2, Na2S04, active carbon, silicates, bentonites, zeolites, and/or mixtures thereof. The desiccant is preferably incorporated in a porous part of the spacer. The desiccant is preferably coextruded with the spacer. The glazing interior surface of the spacer preferably has openings that permit absorption of the atmospheric moisture by the desiccant incorporated into the spacer.

An electrically conductive alarm loop is applied on the first prestressed or partially prestressed pane. In the outer gap, a first electric contacting surface and a second electric contacting surface are applied on the first prestressed or partially prestressed pane. The first electric contacting surface and the second electric contacting surface are connected to the alarm loop. The first electric contacting surface and the second electric contacting surface are preferably printed simultaneously with the alarm loop. The alarm loop runs preferably in the region of the pane frame outside the direct field of vision. The alarm loop can preferably be implemented in a wave, zigzag, or meander shape.

The first electric contacting surface is connected via a first cable end piece and the second electric contacting surface is connected via a second cable end piece to a power connecting cable. The first electric contacting surface and the first cable end piece as well as the second electric contacting surface and the second cable end piece are sheathed by polyisobutylene (PIB) in the layer thickness of at least 1 mm. The polyisobutylene is preferably electrically nonconductive, i.e., it contains no electrically conductive admixtures. The sheathing with polyisobutylene (PIB) increases the insulation of the connecting surface between the cable end piece and the contacting surface. The sheathing made of polyisobutylene is embedded in the organic polysulfide in the outer gap and thus enables "dual" insulation of the cable end piece and the contacting surface. The installation preferably is at least 10 ΜΩ [mega-ohms].

The alarm loop preferably includes an electrically conductive printing paste, particularly preferably an electrically conductive silver paste. The electrically conductive silver paste preferably contains at least 80 wt.-% silver. The electrically conductive silver paste is preferably fired by a prestressing process of the first pane.

The outer gap preferably has, from the edge of the first pane (1), a maximum depth of 3 cm from the pane edge all the way to the spacer. The outer gap preferably has a depth of at least 6 mm.

The spacer preferably contains a desiccant, particularly preferably silica gels, molecular sieves, CaCI2, Na2S04, active carbon, silicates, bentonites, zeolites, and/or mixtures thereof.

The spacer preferably contains polyethylene (PE), polycarbonates (PC), polypropylene (PP), polystyrene, polybutadiene, polynitriles, polyesters, polyurethanes, polymethyl methacrylates, polyacrylates, polyamides, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), preferably acrylonitrile-butadiene-styrene (ABS), acrylonitrile-styrene-acrylester (ASA), acrylonitrile-butadiene-styrene — polycarbonate (ABS/PC), styrene-acrylonitrile (SAN), PET/PC, PBT/PC, and/or copolymers or mixtures thereof.

The first electric contacting surface and the first cable end piece as well as the second electric contacting surface and the second cable end piece preferably include a soldering contact. The soldering contact preferably includes tin, silver, copper, zinc, bismuth, and/or alloys or mixtures thereof.

The alarm loop is preferably completely sheathed within the outer gap with polyisobutylene (PIB). The complete shielding of the alarm loop significantly reduces the short-circuit risk.

The first cable end piece and/or the second cable end piece preferably include copper, iron, silver, gold, tungsten, and/or electrically conductive polymers.

The first pane and the second pane are preferably (thermally) prestressed or partially prestressed. The thermal prestressing causes extensive breakage of the pane and, thus, an interruption of the quiescent current of the alarm loop on the first prestressed or partially prestressed pane. The alarm loop is, in the case of a prestressed pane, also interrupted when only a part or a distant part of the pane is damaged.

The invention further includes a method for producing an insulating glazing unit. In a first step, an alarm loop with a first electric contacting surface and a second electric contacting surface is applied on a first pane. The alarm loop is preferably applied in the form of an electrically conductive paste (preferably silver-containing). In the following step, the first pane with the alarm loop is prestressed. The high temperatures of the prestressing process cause the firing and fixing of the electrically conductive paste and, thus, of the alarm loop. Then, a spacer is arranged circumferentially on the edge of the first pane. The first electric contacting surface and the second electric contacting surface are arranged outside an interior space circumferentially formed by the spacer. In the next step, using an adhesive, for example, polyisobutylene, a second pane is arranged and fixed on the spacer. In the region of the electrically conductive paste, preferably electrically nonconductive polyisobutylene is applied. The arrangement forms an outer gap between the first pane, the spacer, and the second pane.

In a next step, the first electric contacting surface is connected to a first cable end piece and the second electric contacting surface is connected to a second cable end piece of a power connecting cable via a solder. The first electric contacting surface and the second electric contacting surface as well as, preferably, all electrically conductive elements of the electrically conductive paste are then shielded together with the corresponding cable end pieces by a polyisobutylene. In a final step, the outer gap between the first pane, the spacer, and the second pane is sealed with an organic polysulfide.

The alarm loop, the first electric contacting surface, and/or the second electric contacting surface are preferably applied with inkjet printing, transfer printing, or screen printing.

The alarm loop is preferably completely sheathed within the outer gap with polyisobutylene. The first electric contacting surface (4a) and the first cable end piece (6a) as well as the second electric contacting surface (4b) and the second cable end piece (6b) are preferably also sheathed with polyisobutylene. The complete sheathing of the electrically conductive parts significantly increases the electrical insulation. The insulation is preferably at least 10 ΜΩ [megaohms].

The invention further includes the use of the nsulating glazing unit as a burglar-proof glazing unit.

In the following, the invention is explained in detail with reference to drawings. The drawings are a purely schematic representation and not to scale. They in no way restrict the invention. The drawings depict:

Fig. 1 a cross-section of the insulating glazing unit according to the invention,

Fig. 2 another cross-section of the insulating glazing unit according to the invention,

Fig. 3 a plan view of the insulating glazing unit according to the invention,

Fig. 4 a plan view of a preferred embodiment of the insulating glazing unit according to the invention,

Fig. 5 a detail of the contacting surface according to the invention, and Fig. 6 a flowchart of the method according to the invention.

Fig. 1 depicts a cross-section of the insulating glazing unit according to the invention composed of a first prestressed or partially prestressed pane (1) and a second pane (2). The connection of the two panes (1, 2) is done via a circumferential spacer (3). The first prestressed or partially prestressed pane (1), the spacer (3), and the second pane (2) form an outer gap (8). A first electric contacting surface (4a) is applied in the outer gap (8) on the first prestressed or partially prestressed pane (1). The first electric contacting surface (4a) is connected via a first cable end piece (6a) (not shown) to a power connecting cable (6). The first electric contacting surface (4a) and the first cable end piece (6a) are sheathed by polyisobutylene (5) (PIB) in the layer thickness of at least 1 mm. The silver print of the alarm loop is covered all the way to the spacer with nonconductive polyisobutylene (5). All conductive parts in the outer gap of the insulating glass unit are covered with electrically nonconductive PIB (5). The outer gap (8) is sheathed with organic polysulfide (not shown). The organic polysulfide can include further sealants such as silane-modified polymers, silicones, RTV (room-temperature vulcanizing) silicone rubber, HTV (high-temperature vulcanizing) silicone rubber, peroxide vulcanizing silicone rubber, and/or addition vulcanizing silicone rubber, polyurethanes, butyl rubber, polyacrylates, and/or mixtures or copolymers thereof.

Fig. 2 depicts another cross-section of the insulating glazing unit according to the invention in a three-dimensional view. The basic structure corresponds to that described in Fig. 1. In addition, Fig. 2 also depicts the second electric contacting surface (4b) necessary for the complete electrical contacting. The first electric contacting surface (4a) and the second electric contacting surface (4b) are connected to an alarm loop (7) the beginning of which is depicted.

Fig. 3 depicts a plan view of the insulating glazing unit according to the invention. A first electric contacting surface (4a) sheathed with polyisobutylene (5) and a second electric contacting surface (4b) are applied on the first prestressed a partially prestressed pane (1) in the outer gap (8). The first electric contacting surface (4a) and the second electric contacting surface (4b) are connected via a first cable end piece (6a), a second cable end piece (6b), and a power connecting cable (6) to a power source (not shown). The alarm loop (7) runs, starting from the first electric contacting surface (4a) and the second electric contacting surface (4b) from the outer gap (8) into an interior space (9). The interior space (9) is formed by the indicated (circumferential) spacer (3). The alarm loop (7) runs partially outside a preferably opaquely colored edge region (11). The alarm loop (7) is partially visible within the the insulating glazing unit according to the invention. The alarm loop (7) can, alternatively, also run in a zigzag, wave, or meander shape.

Fig. 4 depicts a plan view of a preferred embodiment of the insulating glazing unit according to the invention. The structure corresponds to the structure described in Fig. 3. The alarm loop (7) runs completely within the preferably opaquely colored edge region (11). The alarm loop (7) is not visible within the insulating glazing unit according to the invention.

Fig. 5 depicts a detail of the contacting surface according to the invention. The first electric contacting surface (4a) is connected via a solder (10) to the first cable end piece (6a). The entire arrangement composed of the first contact surface (4a), solder (10), and the first cable end piece (6a) is sheathed by polyisobutylene (5). The arrangement (not shown) of the second electric contacting surface (4b), solder (10), and the second cable end piece (6b) is preferably configured analogously.

Fig. 6 depicts a flowchart of the method according to the invention. In a first step, an alarm loop (7) is applied with a first electric contacting surface (4a) and a second electric contacting surface (4b) on a first pane (1). The alarm loop (7) is preferably applied in the form of an electrically conductive, silver-containing paste. In the following step, the first pane (1) with the alarm loop is prestressed or partially prestressed. The prestressing process is preferably done by heating the first pane (1) to 480 °C to 650 °C and a subsequent rapid cooling process. The cooling process is preferably made possible by corresponding air nozzles. Next, a spacer (3) is arranged circumferentially on the edge of the first pane. The first electric contacting surface (4a) and the second electric contacting surface (4b) are arranged outside an interior space (9) circumferentially formed by the spacer (3). In the following step, a second pane (2) is arranged and fixed on the spacer (3) using an adhesive, for example, polyisobutylene. In the region where contact is made by means of the spacer (3), all electrical components are preferably sheathed with polyisobutylene. The arrangement forms an outer gap (8) between the first pane (1), the spacer (3), and the second pane (2). In a next step, the first electric contacting surface (4a) is connected to a first cable end piece (6a), and the second electric contacting surface (4b) is connected to a second cable end piece (6b) of a power connecting cable (6) via a solder (10). The first electric contacting surface (4a) and the second electric contacting surface (4b) are subsequently sheathed, together with the corresponding cable end pieces (6a, 6b) with a polyisobutylene (5). Also the parts of the alarm loop situated in the outer gap are sheathed with polyisobutylene.

In a final step, the outer gap (8) between the first prestressed or partially prestressed pane (1), the spacer (3), and the second pane (2) is sealed with an organic polysulfide.

All electrically conductive parts or components in the outer gap (8) are sheathed with electrically nonconductive polyisobutylene (5). The polyisobutylene preferably has a specific resistance of more than 1010Qm (ohm*meter).

List of Reference Characters (1) first prestressed or partially prestressed pane (2) second pane (3) spacer (4a) first electric contacting surface (4b) second electric contacting surface (5) polyisobutylene (6) power connecting cable (6a) first cable end piece (6b) second cable end piece (7) alarm loop (8) outer gap (9) interior space (10) solder (11) opaquely colored edge region

Claims

An alarm loop insulation window at least comprising: a spacer (3) between a first biased or partially biased glass plate (1) and a second glass plate (2), an outer gap (8) filled with organic polysulfide between the first biased or partially biased glass plate (1), the spacer (3) and the second glass plate (2), an alarm loop (7) disposed on the first biased or partially biased glass plate (1), a first electrical contact surface (4a) disposed in the outer space (8) of the first biased or partially biased glass plate (1) and a second electrical contact surface (4b), wherein a. the first electrical contact surface (4a) and the second electrical contact surface (4b) are connected over the alarm loop (7), b. contact surface (4a) is connected, above a first cable end piece (6a), and the second electrical contact surface (4b), above a second cable end piece (6b), is connected to a power connection cable (6), characterized in that c. the external contact surface (4a) and the first cable end piece (6a) as well as the second electrical contact surface (4b) and the second cable end piece (6b) are enclosed in a polyisobutylene (PIB) sheath with a section thickness of at least 1 mm and d. 7), the first electrical contact surface (4a) and the first cable end piece (6a) as well as the second electrical contact surface (4b) and the second cable end piece (6b) within the outer space (8) are surrounded by a sheath of the polyisobutylene (PIB) .

An insulation pane according to claim 1, wherein the alarm loop (7) comprises an electrically conductive pressure paste, preferably an electrically conductive silver paste.

Insulation pane according to claim 1 or 2, wherein the outer gap (8) comprises a maximum depth of 3 cm from the edge of the first biased or partially biased glass plate (1) to the spacer (3).

An insulation pane according to any one of claims 1 to 3, wherein the outer gap (8) comprises a depth of at least 6 mm from the edge of the first biased or partially biased glass plate (1) to the spacer (3).

An insulating pane according to any one of claims 1 to 4, wherein the spacer (3) contains a desiccant, preferably silica gel, molecular sieve, CaCh, Na2SO4, activated carbon, silicate, bentonite, zeolite and / or mixtures thereof.

An insulating pane according to any one of claims 1 to 5, wherein the spacer (3) contains polyethylene (PE), polycarbonate (PC), polypropylene (PP), polystyrene, polylbutadiene, polynitrile, polyester, polyurethane, polymethyl methacrylate, polyacrylate , polyamide, polyethylene terephthalate (PET), polybutylene terephthalate (PBT), preferably acrylonitrile-butadiene-styrene (ABS), acrylic ester-styrene-acrylonitrile (ASA), acrylonitrile-butadiene-styrene - polycarbonate (ABS / PC), styrene-acrylonitrile (SAN), PET / PC, PBT / PC and / or copolymer or mixtures thereof.

An insulation pane according to any one of claims 1 to 6, wherein the first electrical contact surface (4a) and the first cable end piece (6a) and the second electrical contact surface (4b) and the second cable end piece (6b) comprise a solder contact (10). .

An insulation pane according to claim 7, wherein the solder contact (10) contains tin, silver, copper, zinc, bismuth and / or alloys or mixtures thereof.

Insulation pane according to one of claims 1 to 8, wherein the first cable end piece (6a) and / or the second cable end piece (6b) comprises copper, iron, silver, gold, tungsten and / or electrically conductive polymers.

Insulation pane of any one of claims 1 to 9, wherein the second glass plate (2) is biased or partially biased.

A method of manufacturing an insulation pane according to any one of claims 1 to 10, wherein a. An alarm loop (7) having a first electrical contact surface (4a) and a second electrical contact surface (4b) is applied to a first glass plate (1). b. The first glass plate (1) with the alarm loop (7) is biased or partially biased, c. A spacer (3) is placed circumferentially on the edge of the first glass plate (1), where the first electrical contact surface (4a) and the second electrical contact surface (4b) is located outside an inner compartment (9) formed circumferentially by the spacer (3), a second glass plate (2) is arranged on the spacer (3) and fixed, and an outer space (8) is formed between the first glass plate (1), the spacer (3) and the second glass plate (2); d. the first electrical contact surface (4a) is connected to a first cable end piece (6a) and the second electrical contact surface (4b) is connected to a second cable end piece (6b), of a power connection cable (6) over a solder (10), characterized in that e. the first electrical contact surface (4a) and the second electrical contact surface (4b) are surrounded by a polyisobutylene sheath, and the outer gap (8) between the first glass plate (1), the spacer (3) and the second glass plate (2) are sealed with an organic polysulfide and, for example, the alarm loop (7), surrounded within the outer space, is completely surrounded by a sheath of polyisobutylene.

The method of claim 11, wherein the alarm loop (7), the first electrical contact surface (4a) and / or the second electrical contact surface (4b) are applied with an ink jet print, transfer printing or screen printing.

Use of the insulating pane of any one of claims 1 to 10 as a burglar-proof pane.