WO2011023178A1

WO2011023178A1 - Composite safety glass with fireproofing characteristics and associated method for producing a composite safety glass

Info

Publication number: WO2011023178A1
Application number: PCT/DE2010/001006
Authority: WO
Inventors: Markus Weber; Guido Carniato
Original assignee: Markus Weber; Guido Carniato
Priority date: 2009-08-29
Filing date: 2010-08-28
Publication date: 2011-03-03
Also published as: DE102009039378A1

Abstract

The invention relates to a composite safety glass with fireproofing characteristics and an associated method for producing said glass. The composite safety glass consists of at least one first and one second flat glass element (2, 3), with fireproofing means provided between said first and second glass elements (2, 3), the fireproofing means being formed by a combination of films (4, 4', 4"). It is particularly advantageous if the combination of films (4, 4', 4") consists of at least one flame-retardant film layer (5, 5') and at least two connecting support film layers (6, 6', 6") that surround the flame-retardant layer (5, 5'), the flame-retardant film layer or layers (5, 5') being produced from a thermoplastic plastic and the connecting support film layers (6, 6', 6") from another material that is suitable for connecting the thermoplastic plastic to the first or second glass element (2, 3).

Description

Laminated safety glass with fire protection properties and associated method for producing a laminated safety glass

The invention relates to a laminated safety glass with fire protection technology

Characteristics according to the preamble of claim 1 and an associated method for producing a laminated safety glass with fire protection properties according to the preamble of claim 1 1.

Under a laminated glass is usually a laminate of at least two flat glass elements which are connected by an adhesive intermediate layer, preferably made of a transparent plastic material. The number, type and thickness of the glass elements and intermediate layers used may vary.

The intermediate layer may be either cast resin or a high tensile, viscoelastic, thermoplastic composite film. This is for example made of polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyacrylate (PA), polymethyl methacrylate (PMMA) and polyurethane (PUR) or the like. Transparent plastic materials.

Such laminated glass can also be designed as safety glass, wherein a safety glass is understood as meaning at least one sheet-like glass element which has special security features when broken. In particular, such planar glass elements can have a predetermined pretension or partial pretensions, so that a desired splintering or a desired fracture pattern is produced on fracture.

Also known are fire-resistant glazings and various methods for their

Production. Such fire-resistant glazings have fire protection properties, and indeed these are fire-retardant. To produce the fire protection properties, intumescent materials are preferably used between two sheet-like glass elements, which are inside the at least two flat glass elements form a transparent intermediate layer, which foams in the event of fire. The disadvantage, however, the intumescent material already at a caused by strong sunlight high

Heat development, especially when used outdoors. As a result, the fire protection properties are no longer given, which often leads to complaints of fire-resistant glazing.

It is also known to form such fire-retardant layers by the use of hydrogels, wherein the introduction of such fire protection layers in the glazing, preferably by infusion or gel and casting resin process takes place, in which the material in question between two spaced-apart

Glass elements, in particular glass panels is introduced. A disadvantage of the introduced fire-retardant hydrogel layer is extremely cold-sensitive, so that in severe cold conditions in the range of less than -15 ⁰ C, the hydrogel layer is irreversibly damaged and no fire retardant effect is present. This again occurs in particular when used outdoors.

In addition, the already known fire-resistant glasses and / or safety glasses are expensive to manufacture and thus extremely expensive.

Based on the aforementioned manufacturing process, it is the task of

present invention, a laminated safety glass with fire protection

Specify properties and a method for its production, which allows a cost-effective, resource-saving and simple production.

The task is based on the characteristics of the generic term of the

Claim 1 and 1 1 solved by each of its characterizing features.

The essential aspect of the method according to the invention is that the film composite comprises at least one fire-retardant film layer and at least two enclosing the fire-retardant film layer Compound carrier film layers, wherein the at least one fire-retardant film layer made of a thermoplastic material and the connecting carrier film layers are made of a suitable for the connection of the thermoplastic material with the first and second glass element further plastic material. Particularly advantageous is the film composite according to the invention thermally insulating, without foaming. This is particularly simple and inexpensive to produce and has excellent fire protection properties. The production is particularly energy-efficient and does not require specially air-conditioned spaces, whereby existing machine systems intended for the production of laminated glass can continue to be used.

Further advantageous is the at least one fire-retardant film layer

Polyvinyl chloride (PVC) or polyethylene terephthalate (PET) produced. From the above thermoplastics films are particularly simple and

inexpensive to produce.

The compound carrier film layers of ethylene vinyl acetate are polyvinyl butyral, polyacrylate, polymethyl methacrylate, polyurethane and / or the like.

Plastic materials produced. In particular, in a production from

Ethylene vinyl acetate, short EVA gives its a particularly resistant

Foil composite and a laminated safety glass made from it.

According to the inventive method for producing a

Laminated safety glass with fire protection properties becomes the

Production of the film composite on at least a first

At least one fire-retardant film layer made of a thermoplastic material is applied to the compound carrier film layer, and then at least one second connection carrier film layer is applied to the fire-retardant film layer. For the fusion of the individual film layers, these are preferably subjected to a composite process in which the layer structure with pressure and elevated temperature or with negative pressure and elevated temperature is applied.

Further developments, advantages and applications of the invention will become apparent from the following description of exemplary embodiments and from the figures. In this case, all described and / or illustrated features alone or in any combination, in principle, the subject of the invention, regardless of their summary in the claims or their

Dependency. The content of the claims also becomes part of

Description made. Show it:

1 shows by way of example a section through an inventive laminated safety glass with two glass elements and a fire-retardant film composite,

2 shows by way of example a section through an alternative embodiment of a

Laminated safety glass with three glass elements and each arranged therebetween fire retardant film composite and

FIG. 3 shows by way of example a section through a further alternative embodiment of a laminated safety glass with two glass elements and a five-layer, fire-retardant film composite.

FIGS. 1 to 3 show by way of example different embodiments of the laminated safety glass 1 according to the invention with fire protection technology

Properties shown.

The laminated safety glass 1 consists of at least a first planar

Glass element 2 and at least one second sheet-like glass element 3, between which fire protection in the form of a film composite 4 are added. The first and second planar glass element 2, 3 each form a safety glass, which have predetermined safety properties. For example, such safety glasses a predetermined bias or

Have partial bias. Safety glass has increased resistance to temperature changes and high resistance to bending, impact and impact. In the event of a break, safety glass, for example, breaks down into small, loosely connected fragments and thus has a low risk of injury. The construction and the

Composition of safety glass are well known in the art.

In the manufacture of laminated safety glass, for example, a

Combination with so-called "float glass" or "teilvorgespanntem glass" are used.

The film composite 4 in this case forms a hybrid film system, and that consists of at least three film layers, wherein at least one fire-retardant, inner film layer 5 made of a different material compared to the other film layers 6, 6 ', which the fire-retardant inner film layer 5 surround or enclose. The film composite 4 according to the invention consists of at least three film layers, namely a fire-retardant, inner film layer 5 and two of these, in each case in the direction of the surrounding

Glass elements 2, 3 outwardly connecting connection carrier film layers 6, 6 '.

According to the invention, the at least one fire-retardant inner film layer 5 is made of a thermoplastic plastic, in particular polyvinyl chloride, short PVC or polyethylene terephthalate, PET for short. The two

Compound carrier film layers 6, 6 'are made of a further plastic material which is suitable for bonding the thermoplastic material, in particular a polyvinyl chloride film layer or a polyethylene terephthalate film layer with the first and second glass element 2, 3. According to the exemplary embodiment illustrated in FIG. 1, a first connection carrier film layer 6 adjoins the first planar glass element 2. This is provided for connecting the first sheet-like glass element 2 with the fire-retardant, inner film layer 5 made of PVC or PET. The fire-retardant, inner

Foil layer 5 made of PVC or PET is then on the second

Connecting carrier film layer 6 'connected to the second sheet glass element 3, so that in total consideration, a laminated safety glass 1 with

fire protection properties, due to the use of at least one fire retardant, inner film layer 5 made of PVC or PET. Polyvinyl chloride (PVC) is a thermoplastic polymer of vinyl chloride and is flame retardant. For use as a fire-retardant film layer 5, ie at high temperatures> 80 ⁰ C, the films are pre-shrunk in an oven above the later operating temperature to form the stress-free.

Under a flame-retardant or fire-retardant material is understood in the context of the invention, a material that is able to absorb the energy of a fire to protect behind lying components or parts of buildings, at least for a predetermined period of time. Usually, components are assigned to fire resistance classes according to the period of time during which the component or construction offers resistance to fire in the standard fire test according to DIN 4102 with specified boundary conditions. In the building regulations classification of components, in particular a laminated safety glass 1 with fire protection properties is predominantly of the

Fire resistance classes F30, F60 ("fire-retardant") and F90 ("fire-resistant").

In FIG. 2, for example, an alternative embodiment of a

Laminated safety glass 1 according to the invention, which has a first, second and third glass element 2, 3, 7. Here, between the first and second as well as between the second and third glass element 2, 3, 7 in each case an inventive film composite 4, 4 'is provided which at least one fire retardant, made of PVC and / or PET film layer 5 and two surrounding compound carrier film layers 6, 6 'has.

3 shows a further embodiment variant of the invention, in which a film composite 4 "of, for example, five film layers is provided between at least the first and second glass elements 2, 3. The film composite 4" has two fire-retardant, inner film layers 5, 5 'made of PVC and / or PET, which are separated from each other and from the opposing first and second glass element 2, 3 via an outer connection carrier film layers 6, 6 ', 6 ".

The compound carrier film layers 6, 6 ', 6 "can be made, for example

Ethylene vinyl acetate, be made short EVA. Also, between the said compound carrier film layers 6, 6 'and the inner film layer 5 may also be further Verbindungssträgerfolienschichten of various plastic materials, such as polyvinyl butyral (PVB), ethylene vinyl acetate (EVA), polyacrylate (PA), polymethyl methacrylate (PMMA) and / or polyurethane (PUR ) or the like. Materials may be provided.

The fire-retardant film layer 5 made of PVC or for example has a thickness of between 0.1 mm and 1.9 mm, preferably between 0.7 mm and 0.8 mm or between 0.8 and 1.6 mm. The compound carrier film layers 6, 6 'have, for example, a thickness between 0.1 mm and 0.5 mm, preferably between 0.3 mm and 0.4 mm. Based on a thickness of the glass elements between 2 to 25 mm, this results in a total thickness of

5 mm to 53 mm, depending on the number of provided film layers 5, 6, 6 'and glass elements 2, 3, 7.

The film composite system is produced, for example, by means of a continuous, cascaded production process in which at least one fire-retardant film layer 5 made of a thermoplastic material is applied to at least one first connection carrier film layer 6 for producing the film composite 4, 4 ', 4 " and then on the fire-retardant film layer 5 at least a second connection carrier film layer 6 'is applied. The thus produced

Film composite 4, 4 ', 4 "is now arranged between the first and second glass element 2, 3, namely the first connection carrier film layer 6 with the first glass element 2 and the second connection carrier film layer 6' connected to the second glass element 3.

To the individual film layers 5, 5 ', 6, 6'. 6 "melt together, the layer structure at elevated pressure and elevated temperature or at a

Underpressure and elevated temperature subjected to a composite process. The duration of the composite process is preferably on the order of a few minutes to a few hours.

In a particularly preferred embodiment, the composite process takes about 30 to 45 minutes. Here, this comprises a heating phase of about 5 minutes, a holding phase of about 10 minutes and a cooling phase of about 12 to 15 minutes. In order to achieve a fusion of the film layers 5, 6, 6 ', 6 ", the temperature in the composite process in the thermoplastic range is to be selected. The pressure in the composite process carried out is preferably of the order of magnitude of 1 to 10 bar.

In order to produce a bubble-free composite, the film composite 4, 4 ', 4 "can also be produced as a vacuum composite, ie under vacuum, whereby the film composite 4, 4', 4 'to be joined is placed loosely on one another in a laminate and finally evacuated Subsequently, the system is preferably loaded at atmospheric pressure and elevated temperature and made into a bubble-free composite, which can now undergo the actual bonding process.

In the composite process performed, the film layers 5, 6, 6 'merge without creating abutting edges between the sections and the finished product as a homogeneous transparent fire protection layer, which is an effective Ensures fire protection effect over the entire surface of the laminated safety glass 1.

The first and second glass element 2, 3 may be preprocessed, for example by various process steps, which for producing a desired

Glazing unit required or advantageous. For example, it is also possible to apply functional layers which influence the transmission of the glazing unit to be produced. Alternatively or additionally, at least one insulating glass layer may be provided, which between the first and second

Glass element 2, 3 or may be arranged outside.

Additionally or alternatively, based on the first and second glass element, only sections of at least one fire-retardant film layer 5, 5 'and at least two connection carrier film layers 6, 6', 6 "can be provided, which unfold the fire-protection effect.

The invention has been described above by means of an embodiment. It is understood that numerous changes and modifications are possible without thereby departing from the inventive concept underlying the invention.

For example, the fire-retardant film layer 5, 5 'and / or the at least two interconnect carrier film layers 6, 6', 6 "can be irradiated radioactively, preferably with BETA or GAMMA radiation, which can particularly advantageously influence the fire-retardant material properties, in particular increase the fire-retarding effect become. Cover list Laminated safety glass first sheet glass element second sheet glass element ₁ 4 ', 4 "film composite

, 5 "fire-retardant film layer, 6 ', 6" connection carrier film layer, third flat glass element

Claims

claims

1. Laminated safety glass with fire protection properties consisting of at least a first and second sheet-glass element (2, 3) and between the first and second sheet-like glass element (2, 3) provided

Fire protection means, the fire protection means being formed by a film composite (4, 4 ', 4 "), characterized in that the film composite (4, 4', 4") consists of at least one fire-retardant film layer (5, 5 ') and at least two, the fire retardant film layer (5, 5 ') surrounding Verbindungssträger- foil layers (6, 6', 6 "), wherein the at least one fire-retardant film layer (5, 5 ') made of a thermoplastic material and the

Connection carrier film layers (6, 6 ', 6 ") are made of a further plastic material suitable for the connection of the thermoplastic material with the first and second glass element (2, 3).

2. Laminated safety glass according to claim 1, characterized in that the

at least one fire-retardant film layer (5, 5 ') made of polyvinyl chloride or polyethylene terephthalate is produced.

3. Laminated safety glass according to claim 1 or 2, characterized in that the Verbindungssträgerfolienschichten (6, 6 ', 6 ") of ethylene vinyl acetate

Polyvinyl butyral, polyacrylate, polymethyl methacrylate, polyurethane and / or the like. Plastic materials are made.

4. Laminated safety glass according to one of claims 1 to 3, characterized

characterized in that the first and second, sheet-like glass element (2, 3) safety-related properties, in particular a predetermined

Have bias.

5. Laminated safety glass according to one of claims 1 to 4, characterized

characterized in that the film composite (4, 4 ', 4 ") at least two

fire-retardant film layers (5, 5 '), which are connected to each other and to the surrounding first and second sheet-like glass elements (2, 3) via at least one connection carrier film layer (6, 6', 6 ").

6. laminated safety glass according to one of claims 1 to 4, characterized by a first, second and third glass element (2, 3, 7), wherein between the first and second glass element (2, 3) and between the second and third glass element (3, 7) are each a film composite (4, 4 ') consisting of at least one fire retardant, made of polyvinyl chloride film layer (5, 5') and at least two surrounding compound carrier film layers (6, 6 ') are provided.

7. Laminated safety glass according to one of claims 1 to 6, characterized

in that the fire-retardant film layer (5, 5 ') produced from polyvinyl chloride has a thickness of between 0.3 mm and 0.9 mm, preferably between 0.7 mm and 0.8 mm.

8. Laminated safety glass according to one of claims 1 to 7, characterized

in that the compound carrier foil layers (6, 6 ') have a thickness of between 0.1 mm and 0.5 mm, preferably between 0.3 mm and 0.4 mm.

9. Laminated safety glass according to one of claims 1 to 8, characterized

characterized in that the thickness of the glass elements (2, 3, 7) is between 2 to 7 mm.

10. Laminated safety glass according to one of claims 1 to 9, characterized

in that at least one of the glass elements (2, 3, 7) has a Functional layer having the transmission of the

Safety composite glass (1) influenced.

1 1.A method for producing a laminated safety glass with

fire protection properties, wherein the laminated safety glass (1) has at least one first and second planar glass element (2, 3), in which between at least one first and second sheet glass element (2, 3) a film composite (4, 4 ', 4 ") is introduced, characterized in that for the production of the film composite (4, 4 ', 4") on at least one first connection carrier film layer (6) at least one fire-retardant film layer (5) made of a thermoplastic material is applied and then to the fire-retardant film layer (5) at least one second connection carrier film layer (6 ') is applied.

12. The method according to claim 11, characterized in that the at least one first connection carrier film layer (6) with the first sheet glass element (2) and the at least one second connection carrier film layer (6 ') with the second sheet glass element (3) is connected.

13. The method according to claim 11 or 12, characterized in that between the said compound carrier film layers (6, 6 ', 6 ") and the inner film layer (5) further compound carrier film layers of various plastic materials are introduced.

14. The method according to any one of claims 1 1 to 13, characterized in that the at least one fire-retardant film layer (5) is made of polyvinyl chloride or polyethylene terephthalate.

15. The method according to any one of claims 1 1 to 14, characterized in that the Verbindungssträgerfolienschichten (6, 6 ', 6 ") of ethylene vinyl acetate Polyvinyl butyral, polyacrylate, polymethyl methacrylate, polyurethane and / or the like. Plastic materials are made.

16. The method according to any one of claims 1 1 to 15, characterized in that for the fusion of the individual film layers (5, 5 ', 6, 6'. 6 ") they are subjected to a composite process, under pressure and elevated temperature ,

17. The method according to any one of claims 1 to 16, characterized in that for the fusion of the individual film layers (5, 5 ', 6, 6', 6 ") they are subjected to a composite process, under the action of reduced pressure and elevated temperature ,

18. The method according to any one of claims 1 1 to 17, characterized in that the at least one fire-retardant film layer (5, 5 ') and / or the at least two Verbindungssträgerfolienschichten (6, 6', 6 ") are radioactively irradiated, preferably with BETA - or GAMMA radiation.