WO2023030925A1 - Procédé de fabrication d'un vitrage coupe-feu - Google Patents

Procédé de fabrication d'un vitrage coupe-feu Download PDF

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Publication number
WO2023030925A1
WO2023030925A1 PCT/EP2022/073219 EP2022073219W WO2023030925A1 WO 2023030925 A1 WO2023030925 A1 WO 2023030925A1 EP 2022073219 W EP2022073219 W EP 2022073219W WO 2023030925 A1 WO2023030925 A1 WO 2023030925A1
Authority
WO
WIPO (PCT)
Prior art keywords
pane
recess
fire protection
blank
chamber
Prior art date
Application number
PCT/EP2022/073219
Other languages
German (de)
English (en)
Inventor
Dieter Kleyer
Tim Guhl
Oskar THOMPSON
Thomas Bobek
Original Assignee
Saint-Gobain Glass France
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint-Gobain Glass France filed Critical Saint-Gobain Glass France
Publication of WO2023030925A1 publication Critical patent/WO2023030925A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/069—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of intumescent material
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • E06B3/677—Evacuating or filling the gap between the panes ; Equilibration of inside and outside pressure; Preventing condensation in the gap between the panes; Cleaning the gap between the panes
    • E06B3/6775—Evacuating or filling the gap during assembly
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/16—Fireproof doors or similar closures; Adaptations of fixed constructions therefor
    • E06B5/165—Fireproof windows

Definitions

  • the invention relates to a method for producing fire-resistant glazing and fire-resistant glazing.
  • fire-resistant glazing serves to protect people and objects on one side of the glazing from a fire on the other side of the glazing.
  • a smoke seal desirable, but at least a temporary heat barrier should also be created.
  • the fire-resistant glazing should act like a normal transparent glazing element.
  • One category of fire protection glass has at least two panes, usually transparent, between which a fire protection layer is placed.
  • the fire protection layer also referred to as a fire protection interlayer or fire protection gel, has, for example, a foaming, heat-insulating and/or cooling material.
  • the material of the fire protection layer is, for example, an alkali polysilicate with the highest possible water content.
  • Aqueous, organic, gel-like polymer hydrogels are also known as material for fire protection layers.
  • the fire protection layers have in common that they are transparent at room temperature, but become cloudy and foam up under the influence of heat, which develops the cooling effect.
  • DE 3037015 A1 discloses a spacer frame made of U-shaped profile sections for fire-resistant glass panes, with an intermediate space between two silicate glass panes being filled with a gel-like material containing salt and water.
  • Alkali silicates are completely transparent under normal application conditions, but begin to become irreversibly cloudy and foam at temperatures of around 80 °C.
  • Such fire-resistant glazing can be produced by applying a thin layer of alkali silicate in liquid form to one side of a first pane and then drying it. This drying step is expensive and delays the manufacturing process. A second pane is then glued onto the intermediate or protective layer made of alkali silicate.
  • Such a manufacturing process is time-consuming and it is difficult to ensure constant product quality, particularly with regard to air inclusions.
  • WO 94/04355 A1 proposes a method in which the fire protection layer can be produced by casting and without drying.
  • the fire protection layer of WO 94/04355 A1 is made of alkali silicate and at least one hardener formed polysilicate, the starting material is free-flowing and suitable for pouring into cavities.
  • a chamber, formed by the space between two (or more) panes, is sealed all the way around the edge area of the panes, an opening is created in the sealing and the chamber is filled through the opening with the initial mass of a fire protection layer in a liquid or pasty state. The opening is then closed and the fire protection compound is cured to form a fire protection layer.
  • Filling the chamber of fire-resistant glass with the free-flowing fire-resistant compound is a process that usually involves a large number of manual work steps.
  • the fire protection compound is filled manually into the chamber formed between the panes using a hose, and the bubbles that form during filling are released manually.
  • the open filling opening is then manually closed and sealed.
  • WO 03/031173 A1 discloses a method for filling fire protection glass, in which the filling opening is closed with a driver plug after filling and the cavity is vented at the same time.
  • a sleeve in order to simplify the filling of the chamber of a fire protection glass, a sleeve can be used in the circumferential seal, which sleeve extends outwards from the interior of the chamber and contains a sealing element.
  • EP 3165700 A1 describes a filling device for fire-resistant glass, which comprises a filling connection for filling in the fire-resistant material at a lower filling opening and a ventilation device for connection to an upper ventilation opening of the fire-resistant glass, the ventilation device comprising a ventilation channel with a swelling agent which, on contact with the Fire protection compound swells to close the ventilation duct.
  • EP 3002122 A1 discloses a device and a method for producing fire protection glass, a first pane and a second pane being connected at a distance from one another and filled with a flowable fire protection compound which is cured in a subsequent step to form a fire protection gel.
  • WO 02/100636 A1 describes a device that is used to fill a space between the panes with intumescent organic fire protection compounds.
  • the fire protection compound is filled in in the form of an aqueous solution with a high water content.
  • the aqueous solution is stirred in a container and before it is poured into a glazing blank, it is degassed and its volume is reduced by evaporating a portion of the water under vacuum.
  • the method according to the invention for producing fire-resistant glazing comprises at least the following steps: a) providing a first pane and a second pane, b) applying a sealant all around the edge area between the first pane and the second pane, c) pressing the arrangement of the first pane, second pane and Sealant for a blank that has a chamber between the first pane, second pane and sealant, d) making at least one first recess and one second recess in the circumferential sealant before, during or after pressing the blank, e) bringing the first recess into contact with a Volume of a flowable firestop compound at least equal to the volume of the chamber and applying a negative pressure to the second recess, thereby reducing the pressure within the chamber to below ambient pressure and causing the flowable firestop compound to flow into the chamber through the first recess and fills it, f) curing of the free-flowing fire protection compound in the blank with the formation of fire protection glazing.
  • the vacuum filling process according to the invention enables the chamber to be filled with fireproofing compound essentially without bubbles.
  • the air located in the chamber is at least partially removed through the second recess, with fire protection compound flowing into the chamber through the first recess.
  • Manual handling of the glazing such as tilting and swiveling the glazing for even, bubble-free filling, is imminent vacuum filling process according to the invention is not required. Such manual steps are thus eliminated while the product quality remains the same.
  • the application of the sealant around the edge of a gap existing between the panes is automated, for example with the help of a commercially available double glazing system.
  • a bead of the sealant is first applied to the edge area of the first pane, then the second pane is placed on the sealant and the arrangement is pressed.
  • the first pane and the second pane could be held in position, for example by means of a suction device, while a sealant is injected circumferentially into the gap between the panes by means of a nozzle located on a robot arm.
  • the sealant can also be prefabricated as a strand and inserted into the gap between the panes.
  • the first pane and the second pane are pressed together with the strand of sealant in between.
  • Suitable presses for example for the production of insulating glazing, are known to those skilled in the art.
  • a blank is produced in which the circumferential sealant strand acts as a spacer between the panes.
  • a first cutout and a second cutout are made in the circumferential sealant bead before, during or after the pressing of the disk arrangement with sealant to form a blank. If the recesses are pressed into the sealant strand after placing a second pane on the sealant strand and before pressing, they can be easily pressed into the sealant, but there is a risk of the sealant strand also being displaced in other areas.
  • a first cutout and a second cutout can be produced directly when the sealant strand is applied to the first pane, in that no sealant is introduced into these areas.
  • this requires a corresponding process control system. This entails additional effort, particularly when different glazing sizes are processed on one system.
  • the recesses are made in the encircling strand of sealant after the sealant has been applied to the first pane and before a second pane is placed.
  • This has the advantage that no adjustments to the sealing process are necessary and the sealant strand in the areas outside the cutout is not affected or is only slightly affected.
  • At least a first and a second recess are made, but further recesses can also be provided, for which the description of the first and second recess applies analogously with regard to their function and nature.
  • the chamber can also be evacuated via more than one recess or filled with fire protection compound via more than one recess.
  • the next step is to fill the blank with a fire protection compound.
  • a lance is usually inserted into the chamber via a recess in the sealant strand and the fire protection compound flowing out of the lance is distributed evenly in the chamber by tilting the blank, with the air displaced by the fire protection compound escaping through the recess.
  • the occurrence of air pockets is monitored manually by a production worker and these are loosened if necessary by shaking the blank, for example by hitting it with a rubber mallet.
  • the chamber of the blank is evacuated via the second recess.
  • a negative pressure is applied to the second recess, for example by contacting the recess with the supply line of a vacuum pump and closing it, and the gases in the chamber are sucked out.
  • the first recess is in contact with flowable fire protection compound, the volume of the fire protection compound corresponding at least to the chamber volume.
  • the chamber is preferably evacuated and filled with fire protection compound at the same time, which reduces the filling time and avoids deformation of the panes when the chamber is evacuated.
  • the chamber can first be evacuated via the second recess, with the first recess being closed and only then the first recess being opened so that fire protection compound can flow in.
  • the negative pressure to be applied to the second recess can be easily determined in the filling process in that in practice the pressure is lowered until the Fire protection mass takes place.
  • the value to be set depends, for example, on the size of the pane and must also be adjusted during the filling process. As a rule, a lower vacuum is required at the beginning of the filling process than towards the end of the filling process. For example, a vacuum of 0.1 bar to 0.9 bar, preferably 0.5 bar to 0.8 bar, below ambient pressure is applied to the first recess. Such pressures are achievable with commercial vacuum pumps.
  • the blank filled with flowable fire protection compound is finally subjected to a hardening step, as a result of which the flowable fire protection compound hardens.
  • Polymerization takes place, for example, so that a fire protection gel forms in the chamber.
  • the method according to the invention can be applied to all fireproofing compounds which can be processed in a flowable form during the production process and which harden in a subsequent step.
  • At least one filling nozzle is inserted in the first recess and/or in the second recess before the chamber is filled.
  • the at least one filler neck is used to fill the chamber with fireproofing compound via the first recess or to evacuate the chamber via the second recess.
  • the filler neck closes the recess, so that a volume exchange between the chamber and the environment only takes place through the filler neck inserted in the recess.
  • the at least one filler neck can be inserted between the panes before the circumferential sealant is introduced or, after the sealant has been injected, it can be pressed into the blank either before or after it has been pressed.
  • the filler neck is preferably pressed into the circumferential sealant before the blank is pressed.
  • a sealant is first applied circumferentially as a strand to the first pane, the filler necks are pressed into the sealant strand, the second pane is placed on the sealant strand with filler necks and the arrangement is pressed.
  • a recess does not have to be created first, but the recess results directly when the filler neck is introduced.
  • the sealant can be applied all around, without a filler neck that has already been used impeding this process.
  • the filler neck comprises a connection which can be connected to a hose, a pipe or a line, so that it can be easily connected to a vacuum pump or a supply line carrying the fireproofing compound.
  • the filler neck comprises at least one tube which connects the chamber of the parison to the volume of air external to the parison.
  • at least one filler neck used in the first recess also includes a valve that prevents fire protection compound that has already been introduced into the chamber from flowing back. In this way, even if the vacuum is released at the second recess and the supply line with fire protection compound is removed from the first recess, the fire protection compound that has already been filled into the chamber remains inside the chamber.
  • At least one filler neck particularly preferably comprises a self-closing valve. Self-closing valves are commercially available and close an opening as soon as the flow through the opening stops.
  • the filler neck located in the first recess is automatically closed when the supply line with fire protection compound is removed.
  • the filler neck particularly preferably comprises a diaphragm valve and/or a solenoid valve.
  • a plastic membrane for example, which has at least one incision, can serve as the membrane valve. When the volume flow is applied, the fluid is pushed through the incision, with the plastic membrane arching in the direction of the volume flow. When the volume flow ebbs away, the diaphragm returns to its original neutral position and closes the opening.
  • a plastic membrane with a cross-shaped incision is preferably used.
  • the filler neck can include a solenoid valve. Suitable solenoid valves are commercially available.
  • the solenoid valve includes a plate that is suitable for closing an opening.
  • the panel and the area adjacent to the opening include a magnetic closure.
  • the plate is arranged on the opening in such a way that a volume flow of fire protection compound into the chamber lifts the plate and the fire protection compound flows into the chamber. If the volume flow stops, the plate is drawn towards the opening and closes it.
  • Self-closing valves are preferably fitted at least in the filler neck of the first recess, but are also advantageous in the filler neck of the second recess. In other recesses, these can be provided analogously to the first and second recesses. Diaphragm valves are particularly preferred since no installation direction has to be taken into account with these.
  • the solenoid valves described are to be inserted into the recesses in such a way that the volume flow required during the filling process can lift the plate of the solenoid valve.
  • the tube of the filler neck can comprise a shut-off device which is accessible when viewed from the environment of the blank. In this way, after filling the chamber, the tube of the filler neck also be closed.
  • the section of the filler neck protruding out of the sealant on the surface on the environmental side can be closed by reshaping, for example by pressing the filler neck with a suitable tool.
  • a section of the filler neck that protrudes beyond the peripheral pane edges of the blank is removed.
  • the filler neck preferably has a predetermined breaking point in this area, so that a targeted mechanical load at this point leads to a break.
  • the predetermined breaking point can be provided, for example, in the form of a taper, within which the wall thickness of the filler neck is reduced.
  • fire protection glazing of the most varied geometries such as round, oval, polygonal or rectangular glazing
  • a large part of the fire protection glazing requested by the customer has a rectangular geometry.
  • the chamber is preferably filled via these corners, with at least the first cutout, preferably the first cutout comprising a filling nozzle, being provided at a corner of the blank. This is advantageous for further facilitating a complete filling of the corner areas with fire protection compound.
  • the second recess is preferably also provided in a corner region of the blank. This is advantageous in terms of a gapless filling with fire retardant.
  • the first cutout and the second cutout are particularly preferably introduced into the sealant at diagonally opposite corners of the blank in order to ensure the best possible filling process with complete filling of the corner regions.
  • the blank is preferably oriented during the filling process in such a way that the distance between the first recess and the floor surface on which the filling system is positioned is less than the distance between the second recess and the floor surface.
  • the first recess lies below the second recess, whereby the recesses do not have to lie within a line perpendicular to the bottom surface of one another.
  • the blank is thus arranged during the filling process in such a way that the filling direction, in which the fireproofing compound flows into the blank during the filling process, has a directional component that is opposite to the weight. To put it simply, the blank is filled from the bottom up, with "bottom" being the bottom surface on which the filling system is positioned. nearest edge of the blank.
  • This filling direction is particularly advantageous in order to remove air residues from the blank chamber to be filled.
  • filling the blank starting from an upper recess and without using a vacuum process leads to increased air inclusions.
  • the fireproofing compound would be filled in at an upper recess and flow down in the hollow space of the blank, with air turbulence occurring and the fireproofing compound enclosing air bubbles.
  • the blank is preferably arranged during the filling process in such a way that the first recess forms the lowest point of the blank.
  • the first recess is arranged at the point on the blank which has the smallest distance from the floor surface on which the filling system is positioned. This has proven to be particularly advantageous in terms of efficient bubble-free filling.
  • the blank is preferably arranged during the filling process in such a way that the surfaces of the first disc and the second disc of the blank form an angle of 10° to 90°, preferably 30° to 90°, to a parallel to the floor surface on which the filling system is positioned. In this way, residual air is effectively displaced, rises and is sucked out via the second recess.
  • the fireproofing compound is preferably introduced into the chamber of the blank via a pipe.
  • the term pipe describes an elongated hollow body that is suitable for supplying the fire protection compound.
  • the tube can, for example, be designed with a rigid or flexible wall, with a round, oval or angular cross-section and is placed against or in the first recess of the blank during the filling process.
  • the blank preferably has at least one filler neck in the first recess, with the pipe carrying the fireproofing compound preferably being connected to the filler neck of the blank.
  • the cross section of the tube is matched to the cross section of the filler neck. This is advantageous in order to ensure a loss-free, clean filling.
  • the tube for filling the blank is in contact with a volume of the fireproofing compound and directs this into the chamber of the blank.
  • the volume of fire protection compound is preferably in a storage container. Fire protection compound is fed from the storage container into the chamber of the blank until it is completely filled. In order to ensure that the blank is completely filled overfilling of the blank is preferred, with excess fire protection compound escaping at the second recess preferably being fed back into the reservoir. Another preferred option is to monitor the fill level of the reservoir.
  • the volume of the chamber to be filled is arithmetically calculated from the pane surfaces and the width of the sealant strand, which can be used to determine the amount of fire protection compound that has to be taken from the storage container.
  • the storage container has a filling level sensor and/or is positioned on a scale. In comparison to overfilling the blank, there is no need to return or dispose of excess fire protection compound escaping at the second recess.
  • the first disk and the second disk are fixed to one another while the chamber of the blank is being filled. This is preferably done by fixing the surfaces of the first pane and the second pane facing away from the chamber.
  • the surfaces of the first pane and the second pane facing away from the chamber represent the surfaces of the blank facing the environment, which are thus accessible from the environment.
  • the panes are fixed using measures known to those skilled in the art, such as plates, frames, rollers and/or suction devices.
  • the blank is preferably positioned on a frame, for example the pane holder of a continuous production line, with the surface of the first or second pane being fixed at least at certain points by the frame.
  • the remaining exposed pane surface of the first or second pane is preferably fixed at least at certain points by a suction device placed on this pane surface.
  • the suction device placed on the disc surface is used before the blank is filled to turn the blank into a preferred filling position.
  • Preferred filling positions are those already described, with the first recess and the second recess in particular being arranged in opposite corners of the blank and the blank being rotated in such a way that the first recess forms the lowest point of the blank, i.e. the section of the blank closest to the bottom surface of the filling system blank represents.
  • the blank is preferably set in vibration during and/or after the filling of the blank with fire protection compound, in particular during the filling, and in any case before the fire protection compound hardens. This will loosen any air bubbles that may be present. rise upwards in the direction of the second recess and are sucked off. Such additional measures to remove air bubbles are not usually necessary, but can be useful in the case of particularly large pane dimensions.
  • the blank is made to oscillate by means of a vibration unit attached to a gripper arm.
  • a vibration unit can be attached directly to the arm of a suction device with which a surface of the first pane or second pane is fixed.
  • the fireproofing compound is preferably introduced under a pressure which is higher than the ambient pressure. This is advantageous in order to increase the filling speed in the process, which can be particularly helpful with large pane dimensions.
  • the fire protection compound is particularly preferably filled in at a pressure of 0.1 bar to 0.9 bar above ambient pressure.
  • the circumferential sealant strand is preferably introduced into the space between the first pane in such a way that the sealant strand is at a distance of 2 mm to 30 mm, preferably 3 mm to 15 mm, from the peripheral edge of the first pane and the second pane.
  • the encircling strand of sealing agent is thus set back by the relevant amount, starting from the encircling edge of the first pane and the second pane, in the direction of the center of the surface of the panes.
  • a peripheral outer space between the panes is formed between the first pane, the second pane and the peripheral sealant.
  • the circumferential sealant forms a spacer between the first pane and the second pane.
  • spacers are also referred to as thermoplastic spacers and preferably include a sealant from the group of hotmelt adhesives, preferably from the group of butyl-based hotmelt adhesives, preferably butyl rubber and/or polyisobutylene.
  • suitable sealants are known to those skilled in the art from thermoplastic spacer (TPS) applications.
  • the peripheral outer pane cavity is preferably sealed with an outer seal, referred to as a secondary sealant, adjacent the peripheral sealant.
  • This outer seal is primarily used to bond the two panes and thus the mechanical stability of the glazing.
  • the secondary sealant preferably contains polysulfides, silicones, silicone rubber, polyurethanes, polyacrylates, copolymers and/or mixtures thereof. Such substances have very good adhesion to glass, so that the outer seal ensures that the panes are securely bonded.
  • the thickness of the outer seal made of secondary sealant is preferably 2 mm to 30 mm, particularly preferably 5 mm to 10 mm.
  • the secondary sealing means preferably terminates flush with the peripheral edge of the first pane and the second pane.
  • the secondary sealant is preferably introduced into the outer space between the panes on the surface of the circumferential sealant facing the environment before or after the blank is filled with the fireproofing compound. If the secondary sealant is introduced before the blank is filled, this is advantageous with regard to the mechanical stability of the blank during the filling process. However, in this case, after the chamber has been filled and the connection of the filler neck has been disconnected, the areas of the filler neck must be subsequently manually sealed with the secondary sealant. Introducing the secondary sealant after the chamber has been filled has the advantage that the area of the filler neck and the remaining secondary edge area can be filled immediately together.
  • fire protection glass Various types of fire protection glass are known in the prior art which use free-flowing fire protection compounds, for example water-containing alkali silicates or also water-containing hydrogels. After curing, such fireproofing compounds result in a fireproofing layer that foams, heat-insulates and/or cools under the action of heat.
  • the flowable fire protection compound preferably comprises at least alkali silicates and at least one hardener. After the fire protection compound has hardened, a polysilicate fire protection layer forms. Such polysilicate fire protection layers have good transparency under normal conditions, while in the event of fire a heat protection effect results from clouding and foaming of the fire protection layer.
  • Intumescent fire protection layers are also referred to as intumescent fire protection layers and are known to the person skilled in the art.
  • fire-resistant glazing comprises further panes extending beyond the first pane and the second pane, which are also connected to these panes via a circumferential sealant strand in a manner analogous to the connection of the first pane and the second pane.
  • two or more chambers are formed in the spaces between the panes fire protection compound to be filled.
  • Such multi-chamber glazings also referred to as multi-layer modules, are preferably filled in such a way that all chambers are filled at the same time. On the one hand, this is advantageous in terms of a short cycle time.
  • the plane-parallelism of the glass panes is ensured by simultaneously filling adjacent chambers.
  • the first pane and/or the second pane, and optionally further panes preferably contain glass, particularly preferably quartz glass, borosilicate glass, soda-lime glass and/or mixtures thereof.
  • the shims may also include thermoplastic polymeric shims.
  • Thermoplastic polymeric discs preferably comprise polycarbonate, polymethyl methacrylate and/or copolymers and/or mixtures thereof.
  • the first pane and the second pane have a thickness of 1 mm to 50 mm, preferably 1 mm to 10 mm, particularly preferably 2 mm to 6 mm, with the two panes also being able to have different thicknesses. Panes of the fire-resistant glazing that go beyond this are preferably also in these thickness ranges.
  • the first pane, the second pane and optionally additional panes can be made of toughened safety glass, thermally or chemically toughened glass, float glass, extra-clear low-iron float glass, colored glass, or laminated safety glass containing one or more of these components.
  • the panes can have any other components or coatings, for example low-E layers or other sun protection coatings.
  • a further aspect of the invention relates to fire-resistant glazing obtainable by means of the method according to the invention.
  • the fire-resistant glazing comprises at least a first pane and a second pane, which are spaced apart from one another by a circumferential sealant, with a chamber being formed between the first pane, second pane and seal, which chamber is filled with a fire-resistant layer comprising at least one alkali silicate, and the fire-resistant glazing in Area of the circumferential sealant comprises at least two filler necks.
  • At least one of the filler necks comprises a valve, preferably a self-closing valve, particularly preferably a diaphragm valve and/or a solenoid valve.
  • At least two filler necks are introduced into the circumferential sealant at diagonally opposite corners of the fire-resistant glazing.
  • the fire-resistant glazing according to the invention is preferably used as building glazing, façade glazing, partition wall, window or door glazing, each individually or as part of laminated glass or insulating glazing.
  • Figures 1a, 1b a schematic representation of a blank during the filling process according to method step e) of the method according to the invention
  • Figures 2a, 2b is a schematic representation of a filling with inserted therein
  • FIG. 3 shows a schematic representation of a blank according to FIGS. 1a and 1a
  • FIG. 4 fire-resistant glazing produced in accordance with the invention
  • FIG. 5 shows a flow chart of a preferred embodiment of the method according to the invention.
  • FIGS. 1a and 1b show a schematic representation of a blank 10 during the filling process according to method step e) of the method according to the invention.
  • FIG. 1a shows a plan view
  • FIG. 1b shows a cross section along the section line AA′ according to FIG. 1a.
  • the blank 10 comprises a first disc 1 and a second disc 2, the are connected to one another via a sealing means 3 introduced circumferentially in the form of a strand between the discs 1 , 2 .
  • the sealant 3 is made of polyisobutylene and forms a spacer between the first disk 1 and the second disk 2, which extends toward the peripheral edge K of the first disk 1 and the second disk 2 by 5 mm toward the surface center of the first disk 1 and the second disk Disc 2 is set back.
  • the spacer made of sealant 3 and the panes 1, 2 enclose a chamber 5 inside the glazing.
  • On the surface of the sealant 3 that faces away from the chamber 5 and faces the environment is the outer space between the panes 9. This is separated on three sides by the first pane 1, the second pane 2 and the sealant 3 and is open to the environment on a fourth side.
  • the blank has a rectangular geometry, with a first recess 4.1 and a second recess 4.2 being introduced into the circumferential sealant 3 at two diagonally opposite corners of the blank 10.
  • FIG. A filler neck 11 is inserted into the first recess 4.1 and into the second recess 4.2, which has a connection 11a that can be connected to a pipe.
  • a free-flowing fire protection compound 6 is introduced into the chamber 5 via the pipe (not shown here), a pipe carrying fire protection compound 6 being attached to the filler neck 11 of the first recess and a negative pressure, i.e. air, being applied to the filler neck 11 of the second recess 4.2 is sucked out of the chamber 5.
  • the flowable fire protection compound 6 includes alkali silicates.
  • the flow direction F of the two fluids, fire protection compound and air is shown by arrows.
  • FIG. 2a shows an embodiment of a filler neck 11, which can be used in a blank 10 according to FIGS. 1a and 1b, in cross section.
  • the filler neck 11 includes a connection 11a to which a pipe can be attached in order to conduct fireproofing compound through the filler neck 11 into the chamber of the blank.
  • the port 11a comprises an elongate cavity surrounded by a wall and opens towards the main body of the filler neck 11.
  • the main body of the filler neck 11 comprises a self-closing valve 7 in the form of a diaphragm which is inserted into the filler neck 11 in such a way that the volume flow of the the fluid passing through the filler neck 11 passes through the membrane.
  • FIG. 2b shows an exemplary embodiment of a membrane which consists of a polymeric material and has a cross-shaped incision 13.
  • FIG. A volume flow pressing against the membrane is pressed through the incision 13, whereby the membrane bends open in the region of the incision 13. If the volume flow is interrupted, the membrane in the area of the incision 13 is pressed back into its resting position, which prevents fluid from flowing back.
  • a filler neck 11 according to FIGS. 2a and 2b is preferably used at least in the first recess 4.1, preferably in the first recess 4.1 and the second recess 4.2 of the blank 10 according to FIGS. 1a and 1b.
  • FIG. 3 shows a section of a production line 15 for the production of fire protection glazing as a schematic illustration, the filling of the blank 10 with fire protection compound 6 being shown here.
  • the blank 10 corresponds to the blank described in FIGS. 1a and 1b.
  • the blank 10 is gripped by a robotic arm 14 with a suction device which rests against an exposed surface of one of the panes 1,2.
  • the blank 10 is first rotated by means of the robot arm 14 in such a way that the first recess 4.1 is the recess closest to the floor surface on which the production line 15 is arranged.
  • tubes 8 are attached to the connections 11a (not shown) of the filler neck 11, with the tube 8 applied to the first recess 4.1 carrying fire protection compound 6 and air being removed from the chamber 5 via the tube 8 attached to the second recess 4.2.
  • the orientation of the blank 10 according to FIG. 3 is particularly advantageous in order to avoid air inclusions.
  • the direction of flow F of the fire protection compound 6 is indicated by an arrow.
  • the slices 1, 2 of the blank 10 are fixed between the robot arm 14 and the section of the production line 15 in such a way that the slices are prevented from sagging during the filling process.
  • FIG. 4 shows fire-resistant glazing 20 produced using the method according to the invention.
  • the fire-resistant glazing 20 comprises a blank 10 according to FIGS. 1a, 1b with the features described there.
  • the blank 10 was completely filled with fire protection compound 6 and this cured. This results in the intumescent fire protection layer 6a.
  • the outer space 9 between the panes is sealed with polysulfide as a secondary sealant 12 .
  • the connections 11a of the filler necks 11 are completely or partially, here completely, severed, so that they do not protrude over the peripheral edge K of the panes 1, 2.
  • the filler necks 11 themselves remain in the fire-resistant glazing.
  • Figure 5 shows a flow chart of a preferred embodiment of the present invention
  • Method comprising at least the steps: I providing a first pane 1 and a second pane 2,
  • step III the filler necks 11 are preferably pressed into the sealant 3 at diagonally opposite corners of the blank, so that a first recess 4.1 with filler neck 11 and a second recess 4.2 with filler neck 11 are located at diagonally opposite corners.
  • the first pane 1 and the second pane 2 are preferably fixed to one another in step VII.
  • connections 11a of the filler necks 11 are preferably completely or partially removed, preferably by breaking off the connection 11a at a predetermined breaking point provided in the material.
  • a secondary sealant 12 is preferably introduced into the outer space 9 between the panes in the vicinity of the sealant 3 before step VI, after step VII or after step VIII.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Glass To Other Materials (AREA)

Abstract

L'invention concerne un procédé de production d'un vitrage coupe-feu (20). L'invention comprend : a) une première vitre (1) et une seconde vitre (2), b) un matériau d'étanchéité (3) est appliqué sur le pourtour dans la zone périphérique entre la première vitre (1) et la seconde vitre (2), c) l'ensemble composé de la première vitre (1), de la seconde vitre (2) et du matériau d'étanchéité (3) est pressé pour former une ébauche (10) qui comporte une chambre (5) entre la première vitre (1), la seconde vitre (2) et le matériau d'étanchéité (3), d) au moins un premier espace libre (4.1) et un second espace libre (4.2) sont disposés dans le matériau d'étanchéité périphérique (3) avant, pendant ou après que l'ébauche (10) est pressée, e) le premier espace libre (4.1) est mis en contact avec un volume d'un composé ignifuge fluide (6), ledit volume correspondant au moins au volume de la chambre (5), et une pression négative est appliquée au second espace libre (4.2), au moyen de laquelle la pression à l'intérieur de la chambre (5) est abaissée à une valeur inférieure à la pression ambiante, de sorte que le composé ignifuge fluide (6) s'écoule via le premier espace libre (4.1) dans la chambre (5) et la remplisse, f) le composé ignifuge fluide (6) est durci dans l'ébauche (10) et le vitrage coupe-feu (20) est obtenu.
PCT/EP2022/073219 2021-08-30 2022-08-19 Procédé de fabrication d'un vitrage coupe-feu WO2023030925A1 (fr)

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EP21193843 2021-08-30
EP21193843.6 2021-08-30

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WO2023030925A1 true WO2023030925A1 (fr) 2023-03-09

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3037015A1 (de) 1980-10-01 1982-05-06 Vereinigte Glaswerke Gmbh, 5100 Aachen Abstandsrahmen fuer mit einem gel gefuellte feuerwiderstandsfaehige mehrfachglasscheiben
WO1994004355A1 (fr) 1992-08-11 1994-03-03 Vetrotech Ag Element de protection thermique transparent
WO2002100636A1 (fr) 2001-06-12 2002-12-19 Doors & More S.R.L. Procede et appareil destines a la fabrication d'elements stratifies transparents resistant a la chaleur
WO2003031173A1 (fr) 2001-10-04 2003-04-17 Vetrotech Saint-Gobain (International) Ag Procede et dispositif de remplissage d'une cavite formee entre deux vitres d'un vitrage compose coupe-feu
DE102007020537A1 (de) 2007-03-19 2008-09-25 Heiko Trautz Glasscheiben-Anordnung und Verfahren zu deren Herstellung
EP3002122A1 (fr) 2014-09-30 2016-04-06 Hörmann KG Eckelhausen Dispositif et procede de fabrication de vitrages coupe-feu
EP3165700A1 (fr) 2015-11-05 2017-05-10 HÖRMANN Eckelhausen Dispositif de remplissage de vitres anti-incendie, dispositif de ventilation utilisable dans ce dernier et procédé de remplissage de vitres anti-incendie

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3037015A1 (de) 1980-10-01 1982-05-06 Vereinigte Glaswerke Gmbh, 5100 Aachen Abstandsrahmen fuer mit einem gel gefuellte feuerwiderstandsfaehige mehrfachglasscheiben
WO1994004355A1 (fr) 1992-08-11 1994-03-03 Vetrotech Ag Element de protection thermique transparent
WO2002100636A1 (fr) 2001-06-12 2002-12-19 Doors & More S.R.L. Procede et appareil destines a la fabrication d'elements stratifies transparents resistant a la chaleur
WO2003031173A1 (fr) 2001-10-04 2003-04-17 Vetrotech Saint-Gobain (International) Ag Procede et dispositif de remplissage d'une cavite formee entre deux vitres d'un vitrage compose coupe-feu
DE102007020537A1 (de) 2007-03-19 2008-09-25 Heiko Trautz Glasscheiben-Anordnung und Verfahren zu deren Herstellung
EP3002122A1 (fr) 2014-09-30 2016-04-06 Hörmann KG Eckelhausen Dispositif et procede de fabrication de vitrages coupe-feu
EP3165700A1 (fr) 2015-11-05 2017-05-10 HÖRMANN Eckelhausen Dispositif de remplissage de vitres anti-incendie, dispositif de ventilation utilisable dans ce dernier et procédé de remplissage de vitres anti-incendie

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