DE202010008723U1 - laminated pane - Google Patents

Abstract

Composite pane (20) with a surface-shaped fire-resistant glazing (10) comprising at least one intumescent fire protection layer (12),
wherein on the opposite side surfaces of the fire-resistant glazing (10) is arranged directly or indirectly in each case at least one plastic interlayer (14), and
wherein on the fire protection glazing (10) facing away from the plastic interlayer (14) in each case at least one glass or glass ceramic disc (15, 16) is arranged.

Description

The The invention relates to a composite pane, in particular a monolithic, Attack-resistant and fire-resistant glazing.

Various protective glazings are known from the prior art. For example, the shows WO 2008/068744 A1 a composite disk that has strong break-through properties. For this purpose, a glass package is used consisting of several mutually parallel and interconnected glass sheets. Behind this glass package is a massive disc made of polycarbonate. The polycarbonate disk can absorb high kinetic energies. A disadvantage of these breakthrough-resistant glazings is the lack of fire resistance.

From the prior art fire protection glazings are still known, for example, after EN 357 are classified. These fire-resistant glazings usually have two or more glass or glass ceramic panes, which are connected to each other with the interposition of intumescent fire protection layer. The intumescent fire protection layers consist, for example, of alkali metal silicates mixed with organic compounds or layers of salt-filled aqueous acrylic polymers (hydrogels). These materials have the property of increasing in volume in case of fire and decrease in density. Such fire-resistant glazing secure the room closure, the heat conduction is significantly reduced. Fire-resistant glazings have the disadvantage of providing the required break-through resistance EN 356 or after ISO 16936 do not have.

In particular, these fire-resistant glasses do not provide reliable protection against punctiform breakdown in the sense of ENV 1627 / ENV 1630 , Such fire-resistant glasses are for example in the US 2009/0246426 A1 described.

It Object of the invention to provide a composite disk, the good fire protection properties and also breakthrough-inhibiting properties having.

This object is achieved with the features of claim 1. Accordingly, the composite pane has a surface-shaped fire-resistant glazing of conventional design, wherein, for example, two or more glass panes are interconnected by mediation of intumescent fire protection layers. On the opposite side surfaces of the fire-resistant glazing are arranged directly or indirectly plastic interlayer. These plastic interlayer consist for example of polycarbonate or polymethylmethacrylate. The plastic interlayer have a high break-through resistance EN 356 In particular, breakthrough inhibitors of P8B classification of this standard and / or classification may be readily obtained ISO 16936-2P3B be realized. In addition, these plastic interlayers provide resistance to punctiform penetrations / punctures with the tool sets of the ENV 1630 and / or the PR EN 1630 , The two plastic interlayers are deposited on the sides facing away from the fire-resistant glazing with at least one glass or glass ceramic pane, the term glass or glass ceramic pane in the present case should also be interpreted as laminated glass, which consists of two or more slices, such as soda lime slices, optionally with interposition are interconnected by intermediate layers. The glass or glass ceramic disc prevents mechanical stress on the plastic interlayer and also optionally provides further protection against penetration.

to Production of the composite pane according to the invention Both plastic interlayer with the fire-resistant glazing cohesively connected, in particular glued be. However, to optimize the manufacturing process becomes special preferred an autoclave method used in which the composite disc is formed under pressure and heat. This creates that Laminate in which the plastic interlayer and the fire-resistant glazing be reliably connected to each other. Especially This autoclave process is possible because the plastic interlayer Both sides of the fire-resistant glazing are arranged and thus the Bimetallic effect, which occurs when one-sided on a disc Plastic interlayer is laminated, prevented or at least is minimized. This bimetallic effect arises due to order of magnitude different thermal expansion coefficient of glass and the plastic interlayers, for example polycarbonate. comes at a temperature difference between production (> 80 ° C) and Use (-20 ° C to 50 ° C) to very strong Tensions in the laminate, this results in a bow-shaped deformation Of the composite, often without any further external Load leads to component failure. The invention Product design of the composite disc minimizes this bimetallic effect and offers in case of load (fire and / or breakdown or breakthrough) a reliable functionality.

Especially Polycarbonate layers are preferred as the plastic interlayer or polymethylmethacrylate used. These have a special high breakthrough security on.

According to the invention, it can be provided the plastic interlayers are adhesively bonded to the sides of the fire-resistant glazing with the interposition of a bonding agent layer. Suitable adhesion promoter layers are adhesions or, more preferably, layers of polyurethane. A production in an autoclave is particularly easy in this case if the adhesive layer is formed by a polyurethane film. This produces a reliable and solid sheet-like composite between the fire-resistant glazing and the plastic interlayers.

Farther can also the glass or glass ceramic discs with interposition a bonding agent layer cohesively with the plastic interlayers be connected. Here again polyurethanes, in particular Polyurethane films are used.

According to one preferred embodiment variant of the invention it is provided that the plastic interlayer has a thickness in the range between ≥ 2 mm and ≤ 8 mm. These material thicknesses can be well with the fire-resistant glazing, especially in the autoclave process connect and thus enable an economical production.

preferably, the thickness of the fire-resistant glazing is ≥ 7 mm, in order to achieve a sufficient fire protection effect.

The glass or glass ceramic pane adjoining the plastic interlayer can for example be from a float glass or a laminated safety glass be formed. The laminated safety glass is usually from two panes of glass, for example soda lime slices, over a PVB film are joined together. The laminated safety glass increases the breakdown inhibition of the composite disc additionally.

The Production of the composite disc is particularly easy then, if provided is that the sum of the thicknesses of the two plastic interlayer is less than or equal to the thickness of the fire-resistant glazing.

Farther It may be provided that the sum of the thicknesses of the two plastic interlayer smaller or equal to the thickness of a plastic interlayer, for a corresponding attack-inhibiting classification is required is. This is based on the knowledge that for certain anti-aggression classifications have certain minimum thicknesses a polycarbonate layer or the like must be used. It has now surprisingly been found that the same Attack inhibition within the scope of the invention can also be achieved when this prescribed thickness is distributed to two plastic interlayers becomes. In this way, a simpler production is possible because the thinner plastic interlayer are cheaper too relate and easier to process.

According to one preferred embodiment variant of the invention can be provided be that the fire-resistant glazing symmetrical to its parallel formed to the two side surfaces extending median plane is, and that the thicknesses of the two plastic interlayer each other with a dimensional tolerance of ± 10%. On this way results in a core component of the composite pane, the essentially stress-free, deformation-free also in the autoclave process can be made. It also provides the symmetry of the core component (Fire-resistant glazing and two plastic interlayer) the same Attack and fire protection from both sides.

The Invention will be described below with reference to an illustrated in the drawings Embodiment explained in more detail. Show it:

1 a composite disk in partial view and side view; and

2 a series order for the composite disc according to 1 in a schematic representation.

As can be seen from the drawings, the composite pane exists 20 from several components. First, there is a common fire-resistant glazing 10 used. This consists of several parallel glass panes 11 For example, soda lime glass panes, between which intumescent layers 12 are arranged. For example, alkali metal silicates mixed with organic compounds or layers with salt-filled aqueous acrylic polymers (hydrogels) as intumescent layers 12 be used. On the two side surfaces of the fire-resistant glazing 10 plane-parallel PUR films are applied as adhesion promoters 13 serve. Accordingly, the adhesion promoter 13 Plastic interlayer 14 with the side surfaces of the fire-resistant glazing 10 cohesively connect. For this purpose, the plastic interlayer 14 , which are formed as plastic films, for example consisting of polycarbonate or polymethyl methacrylate, on the fire-resistant glazing 10 turned away pages of the adhesion agent 13 laid flat. Subsequently, on the plastic interlayer 14 each as a bonding agent 13 another slide placed. Preferably, the adhesion promoters 13 all equally trained to simplify manufacturing. Finally, the outer adhesion promoter 13 in each case a glass or glass ceramic pane 15 . 16 hung up. For example, the glass pane 15 be designed as float glass. The disc 16 can for example be formed by a laminated safety glass, the two or several glass sheets, in particular soda lime slabs, which are connected to each other via a PVB film.

The laminate composite thus formed is introduced in a sack process in an autoclave oven. There, a connection of the individual disc elements is achieved under elevated temperature and pressure. For example, the autoclave temperature can be greater than 80 ° C., in particular, for example, 90 ° C. The built-up pressure in the autoclave oven should be less than 5 bar. Depending on the selected temperature and pressure values, the residence time in the autoclave oven can then be selected until the glass or glass ceramic panes 15 . 16 , the plastic interlayer 14 and the fire-resistant glazing 10 under melting of the adhesion promoter 13 are baked together to form a solid composite.

As can be seen in the drawings, the composite pane is fully symmetrical to the central plane of the fire-resistant glazing 10 parallel to the two sides of the fire-resistant glazing 10 runs, built. Due to the centric arrangement of the fire-resistant glazing 10 and the two-sided arrangement of the plastic interlayer 14 particularly high anti-attack properties and fire resistance properties are achieved. In particular, can be due to the two-sided arrangement of the plastic interlayer 14 also realize the production in the autoclave process, since no deforming stresses are introduced into the component.

Depending on the desired protection category, the thickness of the fire-resistant glazing 10 and / or the thickness of the plastic interlayer 14 be varied. In addition, it is also possible to use the glass / glass ceramic panes 15 . 16 still set an application-specific variation of the product properties. For example, instead of the aforementioned float glass panes for the glass pane 15 and / or instead of the laminated safety glass (glass 16 ) use chemically or thermally tempered glasses. For example, a chemically toughened lithium aluminum silicate glass or a thermally toughened borosilicate glass (for example of the type SCHOTT-PyranS) may be used. These elements increase the fire protection effect of the composite pane 20 , For the fire protection glazing 10 For example, the product Pyranova 2.0.11 from SCHOTT AG with a thickness greater than 7 mm can be used. The thickness of the glass / glass ceramic panes 15 . 16 is advantageously ≥ 2 mm and ≤ 5 mm.

Depending on the design of the individual components of the composite disc 20 can post a corresponding classification for the fire resistance EN 1363 relationship meadow against breakthrough after EN 356 be achieved. When using a fire-resistant glazing 10 of the above-mentioned type Pyranova 2.0.11 from SCHOTT AG, fire resistance classifications can be verified EN 1363 from EI 30 to reach. The use of polycarbonate films for the plastic interlayer 14 with a thickness of 0.78 mm will lead to a resistance classification of P8B EN 356 , 0.64mm thick polycarbonate sheets provide resistance to P6B breakthrough resistance EN 356.

As a result of using the adhesion promoter 13 In conjunction with the autoclave method, a reliable connection of the individual disk components is achieved. In particular, the irradiation test follows DIN EN 12543-4 to no change in the adhesive layer in the climate change test (-20 / 60 ° C, 8h cycle over a week). The laminate will not be damaged during this test.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - WO 2008/068744 A1 [0002]
• US 2009/0246426 A1 [0004]

Cited non-patent literature

• - EN 357 [0003]
• - EN 356 [0003]
• - ISO 16936 [0003]
• - ENV 1627 / ENV 1630 [0004]
• - EN 356 [0006]
• - ISO 16936-2P3B [0006]
• - ENV 1630 [0006]
• - PR EN 1630 [0006]
• - EN 1363 [0024]
• - EN 356 [0024]
• - EN 1363 of EI 30 [0024]
• - EN 356 [0024]
• - EN 356. [0024]
• - DIN EN 12543-4 [0025]

Claims (11)

Composite disc ( 20 ) with a sheet-like fire-resistant glazing ( 10 ) comprising at least one intumescent fire protection layer ( 12 ), whereby on the opposite side surfaces of the fire-resistant glazing ( 10 ) directly or indirectly in each case at least one plastic interlayer ( 14 ), and wherein on the fire-resistant glazing ( 10 ) facing away from the plastic interlayer ( 14 ) at least one glass or glass ceramic disc ( 15 . 16 ) is arranged. Composite disc ( 20 ) according to claim 1, characterized in that the plastic interlayer ( 14 ) consist of polycarbonate or polymethylmethacrylate. Composite disc ( 20 ) according to claim 1 or 2, characterized in that the plastic interlayer ( 14 ) with the interposition of a primer layer ( 13 ) cohesively with the sides of the fire-resistant glazing ( 10 ) are connected. Composite disc ( 20 ) according to one of claims 1 to 3, characterized in that the glass or glass ceramic discs ( 15 . 16 ) with the interposition of a primer layer ( 13 ) cohesively with the plastic interlayers ( 14 ) are connected. Composite disc ( 20 ) according to one of claims 3 or 4, characterized in that the primer layer ( 13 ) consists of polyurethane, in particular of a polyurethane film is formed. Composite disc ( 20 ) according to one of claims 1 to 5, characterized in that the plastic interlayer ( 14 ) have a thickness in the range between 2 mm to 8 mm. Composite disc ( 20 ) according to one of claims 1 to 6, characterized in that the fire-resistant glazing ( 10 ) has a thickness of ≥ 7 mm. Composite disc ( 20 ) according to one of claims 1 to 7, characterized in that the glass or glass ceramic disc ( 15 . 16 ) is formed by a float glass, floated glass ceramic or a laminated safety glass. Composite disc ( 20 ) according to one of claims 1 to 8, characterized in that the sum of the thicknesses of the two plastic interlayer ( 14 ) less than or equal to the thickness of the fire-resistant glazing ( 10 ). Composite disc ( 20 ) according to one of claims 1 to 9, characterized in that the sum of the thicknesses of the two plastic interlayer ( 14 ) is less than or equal to the thickness of a plastic interlayer ( 14 ), which is required for a corresponding attack-inhibiting classification. Composite disc ( 20 ) according to one of claims 1 to 10, characterized in that the fire-resistant glazing ( 10 ) is formed symmetrically to its parallel to the two side surfaces extending median plane, and that the thicknesses of the two plastic interlayer ( 14 ) correspond to each other with a dimensional tolerance of ± 10%.

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