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WO2017029316A1 - Profil d'étanchéité et d'isolation pour des façades-rideaux en aluminium - Google Patents

Profil d'étanchéité et d'isolation pour des façades-rideaux en aluminium Download PDF

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Publication number
WO2017029316A1
WO2017029316A1 PCT/EP2016/069494 EP2016069494W WO2017029316A1 WO 2017029316 A1 WO2017029316 A1 WO 2017029316A1 EP 2016069494 W EP2016069494 W EP 2016069494W WO 2017029316 A1 WO2017029316 A1 WO 2017029316A1
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WIPO (PCT)
Prior art keywords
profile
sealing
foam
insulating
posts
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PCT/EP2016/069494
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German (de)
English (en)
Inventor
Anselm Lischka
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Individual
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Publication of WO2017029316A1 publication Critical patent/WO2017029316A1/fr
Anticipated expiration legal-status Critical
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/88—Curtain walls
    • E04B2/96—Curtain walls comprising panels attached to the structure through mullions or transoms

Definitions

  • curtain wall also called curtain wall, (English, curtain wall) is a construction method for facades of buildings.
  • Curtain walls are structurally constructed with a post-and-beam system of typically aluminum on the outside of buildings. These so-called curtain facades have the task of safely positioning glass and parapet elements.
  • a curtain wall only carries its own weight and no other static loads.
  • the dead weight is removed via the structure of the building and this, across the projectiles passing through, presented.
  • the curtain wall is usually combined with a skeleton construction.
  • the curtain wall is suspended by means of a substructure on the structure of the building.
  • the cross-floor façade usually has a frame construction made of steel or aluminum profiles, which is largely filled with glass or other flat filling elements.
  • the glass or other flat filling elements are held by pressure bars.
  • seals made of EPDM are applied to the inside of the pressure strips, which are subjected to high pressure during assembly.
  • Aluminum has a relatively high thermal conductivity of 237 W / (mK). Thermally non-separated aluminum profiles therefore have a heat transfer coefficient of approx. 7 W / - -
  • the thermal expansion coefficient of aluminum is also quite high at 23.1 * 10 ⁇ -6 / K.
  • the coefficient of thermal expansion of window glass is 7.6 * 10 ⁇ -6 / K.
  • the coefficient of thermal expansion of aluminum exceeds that of glass by 3 times.
  • the temperatures of the aluminum profiles fluctuate between -20 ° Celsius and + 70 ° Celsius, which corresponds to a length change of 8,3 mm for a 4 m profile. As a result, the posts and bars move against each other and opposite the glass.
  • the EPDM seals between the glass and the pressure strips are also heavily stressed by UV light and weathering.
  • the EPDM material embrittles and forms cracks that lead to water impermeability of the facade.
  • the corners between the posts and bars are the points where the wear of the EPDM material first becomes noticeable. Water and wind can be detected especially at these corners.
  • the U-profile foam is disposed on the inside of the first U-profile
  • the posts and bars are covered with their defective EPDM seals.
  • the supernatant of the foam leads to the fact that there is always a pressurized pressure of the foam against the surfaces against which it rests. This is always a seal against incoming water guaranteed.
  • the façade will be windproof and waterproof again.
  • the present invention thus positions itself between the makeshift seal with silicone compound and the replacement of the entire facade. Installation is possible via aerial work platforms, in higher buildings using gondolas mounted on the building. The improvements can be made without opening the building and without interrupting the ongoing operation. Rent losses should be avoided as far as possible. The possibility of free color choice on the part of the owner for the Aludeckprofil is given. The fire hazard for the building is not increased by the proposed measure. It is particularly advantageous if the first U-profile made of aluminum or fiberglass.
  • An optimum compression pressure of the foam results when the supernatant is between 1% and 5%, preferably between 1, 5% and 3%, preferably 2%, of the length of the first U-profile. Under these circumstances, there is always a sufficient contact pressure of the foam from a bar against the foam from a post, even at extreme temperature rashes.
  • Closed cell foam has proved particularly suitable as a foam.
  • the closed-cell structure is not destroyed by the slight compression required here.
  • closed-cell polyethylene foam has proven to be particularly suitable as a foam, in particular if it has been UV-stabilized with the aid of carbon black. Since such PE foam is very weather- and UV-resistant, lifecycles of 15 to 30 years can be achieved with this material.
  • the material properties of PE foam promote double use as a sealing and insulating material: PE does not absorb water, is UV stable and shows no signs of rotting.
  • Acceptable heat transfer coefficients of a renovated with the proposed sealing and insulating profiles facade is obtained when the foam has a thickness between 5 and 15 mm, preferably between 7 and 13 mm, preferably between 8 and 12 mm, preferably between 9 and 1 1 mm , preferably 10 mm.
  • Polyethylene foam has only a very low coefficient of thermal conductivity.
  • the insulation profile improves the U-value of the aluminum construction from approx. 7 W / m2 / K to approx. 3.5 W / m2 / K. Condensates on the insides of the aluminum profiles should only be produced after the renovation at outside temperatures of below -10 ° Celsius ,
  • the back of the first U-profile centrally along the longitudinal axis see a thickness between 3 and 4 mm, preferably 3.5 mm.
  • the back should have a thickness between 2.5 and 3.5 mm, preferably 3 mm.
  • the side walls should at the transition to the back have a thickness between 1, 5 and 2.5 mm, preferably 2 mm.
  • the sidewalls should have a thickness between 1 and 1.5 mm.
  • the first U-profile is thus preferably a rectangular U-profile, the material thickness, starting from the center of the U-profile back to the ends of the flanks, continuously tapers. - -
  • the sealing and insulating profile has a height between 20 and 50 mm, preferably between 30 and 40 mm, preferably 35.5 mm.
  • the foam is typically 6 mm beyond the flanks of the first U-profile in the direction of the facade in the installed state.
  • the first U-profile has a height between 20 and 40 mm, preferably between 25 and 35 mm, preferably 29.5 mm.
  • the U-profile made of foam then preferably has a matching height between 20 and 40 mm, preferably between 25 and 35 mm, preferably 32 mm.
  • the supernatant of the foam is at least partially compressed during application of the at least one sealing and insulating profile on the bolt.
  • the foam is compressed during assembly so that it lasts for life
  • the proposed method covers the faulty EPDM gaskets.
  • the procedure described in connection with the structural integration of the foam causes a cost reduction over a facade replacement by over 90%.
  • the foam of the sealing and insulating profile which is applied to the at least one bar, with the foam and the first U-profile of the sealing and insulating profiles glued, which are applied to the at least two posts.
  • the adhesive is applied to the front side of the foam profile, which applies to the already exhausted on the post sealing and insulating profile.
  • Such a facade is thermally better isolated than a mullion and transom construction without the applied described sealing and insulating profiles.
  • the facade is waterproof and windproof.
  • the sealing and insulating profiles have no effect on the fire safety, u. a. because they are mounted on the outside of the buildings.
  • the applied sealing and insulating profiles allow a new color scheme of the facade with a possibly more attractive appearance than before.
  • the object is achieved by a facade with a mullion-transom construction, wherein the posts and bars are provided with the above-described sealing and insulating profiles.
  • the foam of the sealing and insulating profile which is applied to the at least one bar, with the foam and the first U-profile of the sealing and insulating profiles glued to the at least two Posts are applied.
  • the facade is designed so that the sealing and insulating profiles are attached to the posts and / or bars such that the foam presses on glass and / or parapet plate, that of the posts and bars of the facade are worn.
  • Fig. 1 shows the structure of a conventional mullion and transom construction
  • FIG. 2A shows the sealing and insulating profile in exploded view
  • Fig. 2B is a front view of the sealing and insulating profile before installation
  • Fig. 2C is a side view of the sealing and insulating profile
  • 2D is a perspective view of the sealing and insulating profile
  • FIG. 3 is a sectional view of a built-in sealing and insulating profile.
  • Fig. 4 shows the joint area between posts and bars after assembly of the sealing and insulating profile in exploded view. - -
  • Figure 1 shows the structure of a conventional mullion and transom construction.
  • Two posts 100 and two bars 102 can be seen.
  • glass panes or parapet elements (not shown) are held.
  • a pressing bar 104 is screwed onto the posts 100 and bars 102.
  • the necessary screws engage in two short protruding rails 105, which are part of the post 100 or bar 102.
  • the pressure bar 104 is covered for visual reasons with a cover profile 106 (English: snap cap), which is attached.
  • a cover profile 106 (English: snap cap), which is attached.
  • Between the pressure bar 104 and the posts 100 and bars 102 is often still a thermal insulation 108 installed. Also visible is an expansion joint 1 10, as required in such structures made of aluminum at various points.
  • FIG. 2A shows the sealing and insulating profile 200 in an exploded view.
  • the foam U-profile 202 can be seen, while in the upper part of the first U-profile 204 is shown, which is made of aluminum, for example.
  • the thickening or tapering of the aluminum U-profile 204 are shown exaggerated in the illustration of Figure 2A, to make them easily recognizable.
  • FIG. 2B shows a frontal view of the sealing and insulating profile 200.
  • the aluminum U-profile 204 and the foam U-profile 202 are assembled in a manner required for installation in the curtain wall.
  • FIG. 2B also clearly shows the recesses 206 for the edges of the pressure strips 104.
  • the width of the sealing and insulating profile 200 is based on the width of the pressing bar 104, plus in each case typically 10 mm PE foam left and right, plus 1, 5 - 2 mm Aluprofil left and right. Overall, you get so typically a width of about 90 mm.
  • Figure 2C shows schematically a side view of the sealing and insulating profile 200.
  • the total length of the inner PE foam profile is always at least 2% longer than the aluminum U-profile 204. Therefore, clearly visible in Figure 2C, the supernatant 208 of Foam U-profile 202 opposite the aluminum U-profile 204.
  • FIG. 2D shows a perspective view of the sealing and insulating profile 200.
  • the projection 208 on the one hand and the recesses 206 on the other are easily recognizable.
  • the PE foam 202 projects beyond the aluminum U-profile 204 in the direction of the building by 5-10 mm, typically and preferably by 6 mm, with it - -
  • FIG 3 shows a sectional view of a built-in sealing and insulating profile 200.
  • the sealing and insulating profile 200 is installed to cover a pressing bar 104 along a bar 102. Shown is also a double glazing 300, of the latch 102 and the Press bar 104 is held. This is stored on neoprene blocks 301 (engl., Corner block).
  • the thickness of the foam 202 is chosen such that the pressure bar 104 is completely covered with a minimum thickness of 10 mm on all three sides after installation of the sealing and insulating profile 200.
  • the sealing and insulating profile 200 with its foam U-profile 202 and its aluminum U-profile 204 is screwed by a screw 302, in particular a stainless steel countersunk screw, through the pressure bars 104 with the bolt 102.
  • the screw 302 engages in the two short, projecting rails 105.
  • countersunk holes are provided in the center of the back of the aluminum U-profile 204, which receive self-tapping stainless steel screws.
  • the pressure bar 104 remains incl.
  • the PE foam of the foam U-profile 202 is pressed against the glass pane 300 or the parapet sheet with a minimum pressure.
  • the low pressure of the PE foam seals on the one hand permanently.
  • the foam structure can easily follow the thermal transients.
  • the sealing and insulating profile protects the basic construction during heating and cooling. The periodic material movements, which mechanically load the basic structure, are greatly reduced by smaller temperature amplitudes.
  • Figure 4 shows the joint area between a post 100 and a latch 102 after mounting the sealing and insulating profile 200 (schematically from the inside - without glass).
  • an adhesive is used, which can stick both the foam used with itself, - - So preferably polyethylene foam with polyethylene foam, as well as the foam with aluminum, in the present case, polyethylene foam with aluminum.
  • silicone-free facade adhesive has proven itself, as described in ISO 1 1 600 F25 LM façade.
  • One such example is VEBATEC PROFIDICHT high performance sealant, available from VEBATEC - Chemische u. technical products GmbH, Dreieich-Sprendlingen.
  • the length of the sealing and insulating profiles 200 is at the overlap of the bolt 102 typically almost the entire length of the bolt, so according to the distance between two posts 100. Due to the thermal variations in length, however, certain expansion joints must remain.
  • the length of sealing and insulating profiles 200 used to cover the posts 100 is typically 3-4 meters, corresponding to the height of a projectile.
  • the aluminum U-profiles 204 can be extruded. Lengths that are still manageable in the assembly, for example, 4 m for the aluminum U-profiles 204.
  • the foam U-profile 202 can currently be purchased, for example, commercial profiles that have a length of 1 m. For example, if one wishes to cover a latch 102 with the described sealing and insulating profiles 200, under the present circumstances it will typically be as follows.
  • the cover profile 106 is removed. Thereafter, the aluminum U-profile 204 is cut to the distance between two already covered posts. These are on many facades 120 cm. The aluminum U-profile 204 is therefore cut to 120 cm less an expansion joint and provided with holes for the stainless steel countersunk screws 302. The width of the expansion joint is
  • the above-mentioned adhesive is applied at locations 400 where the overlap of the latch 102 collides with the previously mounted overlap of the post 100. Then, a 1 m piece of the foam U-profile 202 is placed on one end of the bolt 102 and pressed with a direction of movement perpendicular to the already repaired post 100 against this.
  • the previously cut aluminum U-profile 204 is placed over the foam U-profile 202 and bolted using the stainless steel countersunk screws 302 with the latch 102.
  • the tightening torque of the screws 302 is selected such that both flanks of the inner PE foam profile 202 are pressed lightly against the glass pane 300 or the flat filling elements. This ensures a permanent seal against water and wind.
  • the PE foam can far better follow the different movements of the overall construction than a relatively hard EPDM seal.
  • a mullion and transom construction is a construction method for building facades, with which extremely filigree glass facades can be produced.
  • the load transfer takes place via vertical posts (English: mullion), are connected to the horizontal bars (engl .: rails).
  • the supporting materials of a mullion and transom construction are steel, aluminum or wood.
  • Single, double or triple glass windows or so-called parapet elements can be fixed on the bars and between the posts.
  • the window or parapet elements are held by horizontal and vertical pressure plates, which are screwed onto the posts or latches.
  • Elastic sealing elements are used between the window or bridge elements and the posts or bars (see https://de.wikipedia.org/wiki/Posten-Riegelkonstrument)
  • Foams are cellular structure and low density fabrics. For foaming u. a. almost all plastics. Foams can be compressed, so by printing their volume significantly reduced. One differentiates u. a. closed-cell and open-cell foam. With closed-cell foam, the walls between the individual cells are closed. With open-cell foam, the cell walls are not closed. Open-celled foams can therefore absorb liquids, not closed-cell ones. (see https://de.wikipedia.org/wiki/Foam)
  • An aluminum profile is a rolled, drawn or pressed aluminum in a defined shape, whose cross-section is the same over its entire length.
  • An aluminum U-profile is used when the cross section of the aluminum profile has essentially the shape of the letter U.
  • Such a profile consists of three sides, which are connected at typically right angles, namely a top or a back (often also referred to as web) and two side walls, also referred to as flanks or flanges. Typical angles between the spine and the flanks are, apart from 90 °, also 95 ° or 85 °, etc.
  • U-profiles with inclined inner surfaces of the flanges according to DIN 1026-1 or U-profiles with parallel inner surfaces of the flanges according to DIN 1026-2 There are U-profiles with inclined inner surfaces of the flanges according to DIN 1026-1 or U-profiles with parallel inner surfaces of the flanges according to DIN 1026-2 ,
  • the word "U-profile” is a naming of both the component itself and its cross-section, (s. - - https://en.wikipedia.org/wiki/Profilstahl) Curtain facade
  • Post-and-beam constructions are used, for example, for glass facades that can be hung in front of a building.
  • Such facades are also referred to as curtain facades (English: curtain wall).
  • curtain facades Terms: curtain wall
  • the glass elements of curtain walls can not be opened. These are not windows, but fixed glazing.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Load-Bearing And Curtain Walls (AREA)

Abstract

L'invention concerne un profil d'étanchéité et d'isolation (200) servant à rénover des façades-rideaux non étanches. Ledit profil d'étanchéité et d'isolation comprend un profil en U (240) en aluminium et un profil en U (202) en mousse. Le profil en U composé de mousse est disposé sur la face intérieure du profil en U composé d'aluminium. Le profil en U en mousse (202) comporte, le long de l'axe longitudinal du profil en U en aluminium, une partie saillante. Les montants et traverses (102) d'une façade-rideau, y compris leurs joints d'étanchéité en EPDM (304) défectueux, sont recouverts du profil d'étanchéité et d'isolation (200) selon l'invention. La partie saillante de la mousse (202) a pour effet que la mousse est en permanence pressée sous l'action d'une pression contre les surfaces contre lesquelles elle repose. Cela permet de garantir en permanence une étanchéification par rapport aux infiltrations d'eau. La façade-rideau redevient coupe-vent et étanche à l'eau.
PCT/EP2016/069494 2015-08-19 2016-08-17 Profil d'étanchéité et d'isolation pour des façades-rideaux en aluminium Ceased WO2017029316A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202015005890 2015-08-19
DE202015005890.6 2015-08-19

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WO2017029316A1 true WO2017029316A1 (fr) 2017-02-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202017002355U1 (de) 2017-05-04 2017-07-07 Anselm Lischka Pressleiste für Pfosten-Riegel-Fassaden
CN110984442A (zh) * 2019-12-02 2020-04-10 苏州臻品建筑装饰有限公司 一种高强度防风幕墙安装支架
CN111042401A (zh) * 2019-12-31 2020-04-21 深圳粤源建设有限责任公司 一种玻璃幕墙用防水装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29606125U1 (de) * 1995-04-10 1996-06-20 Rasmussen, Mogens Vilfred, Haslev Halteprofil
DE19736860A1 (de) * 1997-08-23 1999-03-04 Guenter Pazen Wärmegedämmte Fassade mit Fensterbändern

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29606125U1 (de) * 1995-04-10 1996-06-20 Rasmussen, Mogens Vilfred, Haslev Halteprofil
DE19736860A1 (de) * 1997-08-23 1999-03-04 Guenter Pazen Wärmegedämmte Fassade mit Fensterbändern

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202017002355U1 (de) 2017-05-04 2017-07-07 Anselm Lischka Pressleiste für Pfosten-Riegel-Fassaden
CN110984442A (zh) * 2019-12-02 2020-04-10 苏州臻品建筑装饰有限公司 一种高强度防风幕墙安装支架
CN111042401A (zh) * 2019-12-31 2020-04-21 深圳粤源建设有限责任公司 一种玻璃幕墙用防水装置

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