Attachment system and method for attaching panels to a faÇade, and a ventilation profile for such a system

Abstract

The invention provides attachment system for attaching panels to a facade (2), in particular rabat parts or tongue-and-groove panels, with said panels at a distance from said facade for allowing ventilation space between the panels (1) and the facade (2), the panels comprising a rear surface, said attachment system comprising a sub-frame or battening (7) attached to the facade (2) and rear surfaces (6) of said panels for providing the ventilation space (3); a lower ventilation profile (8) to be attached along a, in mounted state of the panels, lower edge of the panels (1), the lower ventilation profile (8) comprising a perforated lower ventilation profile strip (9) extending between the facade and the edge of the panels, ventilatingly closing a space between the facade and the rear surface of the panels, the lower ventilation profile (8) comprises a drainage sill (10) extending along a side of the perforated lower ventilation profile strip (9), in particular the drainage sill in transverse direction inclined from a plane of the perforated lower ventilation profile strip, the lower ventilation profile (8) further comprising an abutment strip (11) extending between the perforated lower ventilation profile strip (9) and the drainage sill 10), in particular extending away from the perforated lower ventilation profile strip (9) and the drainage sill (10), more in particular extending substantially vertical with respect to the perforated lower ventilation profile strip.

Description

field of the invention

[0001] The invention relates to an attachment system for attaching panels to a facade, and a ventilation profile for such a system.Background of the invention

[0002] DE10322346 according to its abstract relates to "The panel mounts (4-6) of the ventilated curtain facade are clipped in from the front, free from noise and vibrations, and not mounted from the top. The bottom groove (8) of each panel (3) and rear side (7) of each panel form a lock which prevents the panels and panel mounts from falling out of the horizontal holding profiles (2) so that in conjunction with the upper panel mounts the panels remain anchored in the horizontal profile and the panel mounts are locked by a snap-in locking mechanism (9,10)".Summary of the invention

[0003] A disadvantage of prior art is that for attaching panels and aligning theses panels, additional measurements are required.

[0004] Hence, it is an aspect of the invention to provide an alternative attachment system, and a ventilation profile, which preferably further at least partly obviates one or more of above-described drawbacks.

[0005] There is provide an attachment system for attaching panels to a facade, in particular rabat parts or tongue-and-groove panels, with said panels at a distance from said facade for allowing ventilation space between the panels and the facade, the panels comprising a rear surface, said attachment system comprising a sub-frame or battening attached to the facade and rear surfaces of said panels for providing the ventilation space; a lower ventilation profile to be attached along a, in mounted state of the panels, lower edge of the panels, the lower ventilation profile comprising a perforated lower ventilation profile strip extending between the facade and the edge of the panels, ventilatingly closing a space between the facade and the rear surface of the panels the lower ventilation profile comprises a drainage sill extending along a side of the perforated lower ventilation profile strip, in particular the drainage sill in transverse direction inclined from a plane of the perforated lower ventilation profile strip, the lower ventilation profile further comprising an abutment strip extending between the perforated lower ventilation profile strip and the drainage sill, in particular extending away from the perforated lower ventilation profile strip and the drainage sill, more in particular extending substantially vertical with respect to the perforated lower ventilation profile strip.

[0006] There is further provided a method for attaching panels to a facade, in particular rabat parts or tongue-and-groove panels, with said panels at a distance from said facade for allowing ventilation space between the panels and the facade, the panels comprising a rear surface, the method comprising: attaching a battening to the facade; providing a lower ventilation profile comprising a perforated lower ventilation profile strip extending between the facade and the edge of the panels, ventilatingly closing a space between the facade and the rear surface of the panels; attaching the lower ventilation profile lower battening, the perforated lower ventilation profile strip aligned with the lower edge of the panels.

[0007] The current ventilation profile provides a proper alignment for panels for mounting, and retaining the panels in position. Furthermore, the current ventilation profile provides a proper ventilation possibility at the rear face, between the panels and a facade of insulation material. The dimensions of battening and lower battening strips and ventilation is easily set. Furthermore, the lower ventilation profile due to the various strips provides a solid basis for building a facade panel system using rabat or tongue-and-groove panels.Detailed description of the invention

[0008] In this detailed description, various embodiments are described. As indicated, these embodiments can be combined.

[0009] In an embodiment, the lower ventilation profile is an aluminium extrusion profile. Alternatively, the lower ventilation profile is produced using additive manufacturing, like 3D printing. It can also be extruded or through additional manufacturing produced from polymer material, like thermoplastic material. This may comprise filling material, for instance cellulose natural fiber.

[0010] In an embodiment, the attachment system further comprises an upper ventilation profile that comprises a perforated lower ventilation profile strip extending above the panels. This completes the alignment and / or confinement of the panels.

[0011] In an embodiment, the attachment system further comprises a cover strip comprising an attachment rail and a cover strip attachment profile comprising a perforated attachment profile strip extending parallel to the panel rear surface, and comprising a complementary cover strip attachment rail for in cooperation with the cover strip attachment rail mounting the cover strip at an edge of the panels.

[0012] In an embodiment, the cover strip is an L-profile having the attachment rail.

[0013] In an embodiment of the method, the perforated lower ventilation profile strip comprises a drainage sill extending along a side of the perforated lower ventilation profile strip. This guides away water, preventing it from getting in the battering and insulation behind the panels. In a particular embodiment, the drainage sill in transverse direction inclined from a plane of the perforated lower ventilation profile strip. This helps removal of water in a better way. In an embodiment, the ventilation profile further comprises an abutment strip extending between the perforated lower ventilation profile strip and the drainage sill. In particular the abutment strip extends away from the perforated lower ventilation profile strip and the drainage sill. More in particular, the abutment strip extends substantially vertical with respect to the perforated lower ventilation profile strip. The abutment profile provides an alignment for the panels and adds to the rigidity of the ventilation profile.

[0014] In an embodiment, the ventilation profile abutment strip is aligned with the designed or intended rear panel surface position.

[0015] There is further provided a kit of parts comprising at least two rabat or tongue-and-groove panels and at least one lower ventilation profile to be attached along a, in mounted state of the panels, lower edge of the panels, the lower ventilation profile comprising a perforated lower ventilation profile strip extending between the facade and the edge of the panels, ventilatingly closing a space between the facade and the rear surface of the panels.

[0016] In an embodiment of the kit of parts, the lower ventilation profile comprises a drainage sill extending along a side of the perforated lower ventilation profile strip.

[0017] In particular the drainage sill is in transverse direction inclined from a plane of the perforated lower ventilation profile strip.

[0018] In an embodiment, the lower ventilation profile further comprising an abutment strip extending between the perforated lower ventilation profile strip and the drainage sill.

[0019] In particular, the abutment strip extends away from the perforated lower ventilation profile strip and the drainage sill. More in particular, it extends substantially vertical with respect to the perforated lower ventilation profile strip.

[0020] The term "substantially" herein, such as in "substantially consists", will be understood by the person skilled in the art. The term "substantially" may also include embodiments with "entirely", "completely", "all", etc. Hence, in embodiments the adjective substantially may also be removed. Where applicable, the term "substantially" may also relate to 90% or higher, such as 95% or higher, especially 99% or higher, even more especially 99.5% or higher, including 100%. The term "comprise" includes also embodiments wherein the term "comprises" means "consists of'.

[0021] The term "functionally" will be understood by, and be clear to, a person skilled in the art. The term "substantially" as well as "functionally" may also include embodiments with "entirely", "completely", "all", etc. Hence, in embodiments the adjective functionally may also be removed. When used, for instance in "functionally parallel", a skilled person will understand that the adjective "functionally" includes the term substantially as explained above. Functionally in particular is to be understood to include a configuration of features that allows these features to function as if the adjective "functionally" was not present. The term "functionally" is intended to cover variations in the feature to which it refers, and which variations are such that in the functional use of the feature, possibly in combination with other features it relates to in the invention, that combination of features is able to operate or function. For instance, if an antenna is functionally coupled or functionally connected to a communication device, received electromagnetic signals that are receives by the antenna can be used by the communication device. The word "functionally" as for instance used in "functionally parallel" is used to cover exactly parallel, but also the embodiments that are covered by the word "substantially" explained above. For instance, "functionally parallel" relates to embodiments that in operation function as if the parts are for instance parallel. This covers embodiments for which it is clear to a skilled person that it operates within its intended field of use as if it were parallel.

[0022] Furthermore, the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.

[0023] The devices or apparatus herein are amongst others described during operation. As will be clear to the person skilled in the art, the invention is not limited to methods of operation or devices in operation.

[0024] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. Use of the verb "to comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements. In the device or apparatus claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

[0025] The invention further applies to an apparatus or device comprising one or more of the characterising features described in the description and / or shown in the attached drawings. The invention further pertains to a method or process comprising one or more of the characterising features described in the description and / or shown in the attached drawings.

[0026] The various aspects discussed in this patent can be combined in order to provide additional advantages. Furthermore, some of the features can form the basis for one or more divisional applications.Brief description of the drawings

[0027] Embodiments of the invention will now be described, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which: Figure 1 schematically depicts an embodiment of a facade assembly of battening, facade panels and lower ventilation profile; Figure 2 a lower ventilation profile in perspective view; Figure 3 a lower ventilation profile in cross-section, Figure 4 an other embodiment of a lower ventilation profile, and Figure 5 the lower ventilation profile of figure 4 in perspective view.

[0028] The drawings are not necessarily on scaleDescription of preferred embodiments

[0029] Figure 1 schematically depicts a facade 2 with battening 7, partly taken away panels, and a lower ventilation profile 8. The battening 7 provides a ventilation space 3 between the facade 2 and the rear surface 6 of the panels or facade panels 1. In this embodiment, a single layer of battening 7 is shown. In order to allow proper ventilation through this ventilation space 3 yet also to prevent bugs to take over the ventilation space 3, separate ventilation strips 9 have been suggested. These plastic ventilation strips 9 from plastic rolls are fixed at positions to close off the ventilation space 3 from being invested with bugs.

[0030] The known plastic ventilation strips are very flexible as they are provided on a roll. The do not assist in proper alignment of panels, for instance.

[0031] In the embodiment of figure 1, the battening 7 is fixed to a facade 2. Then, the lower ventilation profile 8 (see figure 2 and 3) is applied onto a lower battening strip. The lower ventilation profile 8 then provides amongst others an alignment provision for the lower edge of facade panels1. These facade panels can be mounted horizontally. These facade panels 1can also be mounted vertically as indicated in figure 1.

[0032] The lower ventilation profile 8 provides a perforated lower ventilation profile strip 9. The lower ventilation profile strip 9 has ventilation holes 12. The through holes or perforations 12 are selected so small that most insects or larvae cannot pass. Furthermore, a open passage area to total area of the lower ventilation profile strip 9 is selected to be between 0.4 and .95. In particular, this ratio is between 0.5 and 0.99. More in particular, the relation is between 0,6 and 0.95. The holes have at least one diameter below 5 mm. In particular at least one diameter below 4.5 mm. In an embodiment, the at least one diameter is 2-4.5 mm. In most embodiments the diameter is between 3.5 and 4.2 mm. In an embodiment, these holes are substantially oval. The second axis is in an embodiment between 6 and 10 mm. In particular the second axis is between 7 and 9 mm. Often, the second axis is between 7.5 and 85 mm. It provides sufficient ventilation and prevents bugs and larvae from passing.

[0033] The lower ventilation profile strip 9 can be provided with a weakening groove along its length to facilitate reducing a width. In this way, a lower ventilation profile strip 9 can have a width 22of about 15-35 mm or about 35-55 mm. Usually the lower ventilation profile strip 9 has a width of about 20-30 mm or about 45-55 mm.

[0034] The lower ventilation profile 8 further comprises a drainage sill 10. This drainage sill 10 extends along a side of the perforated lower ventilation profile strip 9.

[0035] In particular, the drainage sill 10 is in transverse direction inclined from a plane of the perforated lower ventilation profile strip 9. The drainage sill 10 here has several functions. It should provide a support and alignment for the facade panels 1. The drainage sill 10 should furthermore add in providing a closing off of the space between the lower edge of the facade panels 1 and the ventilation space. Finally, the drainage sill 10 should aid in taking / guiding away water that can run down along the outer surface of the facade panels 1.

[0036] The drainage sill 10 has a (in mounted state) downward running end 23 of about 10-25 mm. Sufficient for guiding water way from the facade. It runs down at an angle of between 10 and 14 degrees for proper drainage. Often, this angle is between 11 and 13 degrees. At its end, it is provided with a nose 13 for rigidity and further drainage.

[0037] The drainage sill 10 adjacent to the abutment strip 11 comprises a flat alignment strip 24 for providing an alignment basis for the facade panels 1. A width of such an alignment strip 24 is between 3 and 6 mm. In particular, such a strip 24 has a width of 4-5 mm.

[0038] Adjacent to the alignment strip 24 the drainage sill 10 of the lower ventilation profile comprises a ventilation step 25 for allowing moisture ventilation. In particular in case of extruded hollow chamber tongue and groove panels, the hollow longitudinal chambers can thus be ventilated. A step height of between 0.5 and 2 mm is sufficient, in particular a step height of 0.7 to 1.5 mm. The step width is about 2-5 mm. In particular, a width of 3-4 mm is sufficient.

[0039] A second step 26 is provided adjacent to the ventilation step 25. This second step 26 is provided to allow water from the ventilation step 25 to flow away, and to allow water from the outer surface of the facade panels to freely flow via the further drainage sill 10. The second step 26 has a height of between 2-5 mm, in particular 2.5-4 mm. The width of the second step is about 4-10 mm, in particular 5-8 mm.

[0040] The lower ventilation profile 8 further comprises an abutment strip 11. This abutment strip 11 extends between the perforated lower ventilation profile strip 9 and the drainage sill 10. In particular the abutment strip 11 extends away from the perforated lower ventilation profile strip 9 and the drainage sill 10. More in particular, the abutment strip 11 extends substantially vertical with respect to the perforated lower ventilation profile strip 9. The abutment strip 11 at one side provides an abutment for the facade panel rear surface 6. This is also referred to as its drainage side or external side 14.

[0041] Furthermore, in an embodiment the abutment strip 11 provides an abutment for the battening 7. This side abutting the battening 7 is also referred to as its inner side or facade side or battening side 15.

[0042] For proper placement and attachment, the abutment strip 11 has a height of at least 15 mm. Usually, a height of 50 mm is sufficient. In most embodiments, in particular with tongue-and-groove panels, a height of between 15 and 30 mm is selected. In particular, a height of between 17 and 25 mm is selected.

[0043] The abutment strip 11 can be provided with a longitudinal groove 16 or positioning groove for an attachment means, for instance a screw. This can be a screw with a head for drilling the selected material. Such a groove 16 can be 0.4-0.6 mm.

[0044] The abutment strip can furthermore be provided with a deepened strip 18 at its drainage side for housing a screw-head. Usually between 1 and 2 mm deep. For proper closing off of the ventilation space and abutment against the rear surface of the facade panels, the abutment strip 11 has a flat surface strip 19 at a lower end of the abutment strip 11, along the deepened strip. The abutment strip along the opposite side to the deepened strip 18 can be provided with a ledge that in a mounted condition presses against the rear surface of the facade panel 1.

[0045] The abutment strip 11 at the battening side usually is provided with a flat surface 21 for properly aligning and closing off.

[0046] In order to provide a proper alignment for the facade panels 1, the lower ventilation profile 8 is of a relative ridged material. It can be made from a more ridged polymer material, for instance fiber reinforced. In a preferred embodiment, the lower ventilation profile 8 is from aluminium. For aesthetic purposes, the aluminium usually is coated, for instance anodised. Usually, the lower ventilation profile 8 is between 1 and 2 mm thick. In a particular embodiment, the ventilation profile is between 1.2 and 1.7 mm thick. In particular, it was found that a thickness of between 1.4 and 1.6 mm is sufficient to provide a sufficiently ridged lower ventilation profile 8. In particular in combination with material selection and the orientation of the ventilation strip 9, drainage sill 10 and abutment strip 11.

[0047] In figure 4, an alternative attachment system is illustrated. Here a battening 7 of two layers is shown. In order to provide a ventilation profile that closes off the ventilation space 3 behind the facade panels 1, a wider perforated lower ventilation profile strip 9 is illustrated. In figure 5, this lower ventilation profile 8 is shown in perspective view. The wider perforated lower ventilation profile strip 9 in this embodiment has a longitudinal groove that allows easy removal of part of the perforated lower ventilation profile strip 9 in order to make it as wide as the version of figure 2 and 3. In this way, only one version of the lower ventilation profile 8 needs to be produced and distributed.

[0048] In am embodiment, the attachment system at an opposite end of a facade cladding with the facade panels 1 can be provided with an upper ventilation profile comprising a perforated upper ventilation profile strip extending above the facade panels 1. In this way a ventilation channel can be provided from the perforated lower ventilation profile strip 9 along the ventilation space 3 and the ventilation profile strip of the upper ventilation profile. The ventilation profile strip of the upper ventilation profile this in fact at one end provides a physical closure of the ventilation space 3 in order to prevent unwanted insects, and other creatures to invest the ventilation space 3. The upper ventilation profile in an embodiment comprises a strip extending over the upper line of facade panels 1. The upper ventilation profile in an embodiment further comprises a holding groove for taking up a lower edge of the facade panels 1. In an embodiment, the upper ventilation profile comprises the ventilation strip extending above the holding groove. The ventilation strip in a further embodiment comprises a sealing strip at a side opposite the holding groove and designed for closing off further access to the ventilation space 3, the battening 7 and the facade 2. In an embodiment the sealing strip abuts the facade 2.

[0049] It will also be clear that the above description and drawings are included to illustrate some embodiments of the invention, and not to limit the scope of protection. Starting from this disclosure, many more embodiments will be evident to a skilled person. These embodiments are within the scope of protection and the essence of this invention and are obvious combinations of prior art techniques and the disclosure of this patent.Reference numbers

[0050] 1 Facade panels 2 Facade 3 Ventilation space 4 Tongue 5 Groove 6 Facade panel rear surface 7 Battening 8 Ventilation profile 9 perforated lower ventilation profile strip 10 drainage sill 11 abutment strip 12 ventilation holes or ventilation perforation 13 drainage sill nose 14 abutment strip external side 15 abutment strip battening side 16 abutment strip positioning groove 17 abutment strip height 18 deepened strip 19 flat surface strip 20 ledge 21 abutment strip flat surface 22 lower ventilation profile strip width 23 drainage sill downward running end 24 drainage sill flat alignment strip 25 drainage sill ventilation step

Examples

Embodiment Construction

[0029]Figure 1 schematically depicts a facade 2 with battening 7, partly taken away panels, and a lower ventilation profile 8. The battening 7 provides a ventilation space 3 between the facade 2 and the rear surface 6 of the panels or facade panels 1. In this embodiment, a single layer of battening 7 is shown. In order to allow proper ventilation through this ventilation space 3 yet also to prevent bugs to take over the ventilation space 3, separate ventilation strips 9 have been suggested. These plastic ventilation strips 9 from plastic rolls are fixed at positions to close off the ventilation space 3 from being invested with bugs.

[0030]The known plastic ventilation strips are very flexible as they are provided on a roll. The do not assist in proper alignment of panels, for instance.

[0031]In the embodiment of figure 1, the battening 7 is fixed to a facade 2. Then, the lower ventilation profile 8 (see figure 2 and 3) is applied onto a lower battening strip. The lower ventilation pro...

field of the invention

[0001] The invention relates to an attachment system for attaching panels to a facade, and a ventilation profile for such a system.Background of the invention

[0002] DE10322346 according to its abstract relates to "The panel mounts (4-6) of the ventilated curtain facade are clipped in from the front, free from noise and vibrations, and not mounted from the top. The bottom groove (8) of each panel (3) and rear side (7) of each panel form a lock which prevents the panels and panel mounts from falling out of the horizontal holding profiles (2) so that in conjunction with the upper panel mounts the panels remain anchored in the horizontal profile and the panel mounts are locked by a snap-in locking mechanism (9,10)".Summary of the invention

[0003] A disadvantage of prior art is that for attaching panels and aligning theses panels, additional measurements are required.

[0004] Hence, it is an aspect of the invention to provide an alternative attachment system, and a ventilation profile, which preferably further at least partly obviates one or more of above-described drawbacks.

[0005] There is provide an attachment system for attaching panels to a facade, in particular rabat parts or tongue-and-groove panels, with said panels at a distance from said facade for allowing ventilation space between the panels and the facade, the panels comprising a rear surface, said attachment system comprising a sub-frame or battening attached to the facade and rear surfaces of said panels for providing the ventilation space; a lower ventilation profile to be attached along a, in mounted state of the panels, lower edge of the panels, the lower ventilation profile comprising a perforated lower ventilation profile strip extending between the facade and the edge of the panels, ventilatingly closing a space between the facade and the rear surface of the panels the lower ventilation profile comprises a drainage sill extending along a side of the perforated lower ventilation profile strip, in particular the drainage sill in transverse direction inclined from a plane of the perforated lower ventilation profile strip, the lower ventilation profile further comprising an abutment strip extending between the perforated lower ventilation profile strip and the drainage sill, in particular extending away from the perforated lower ventilation profile strip and the drainage sill, more in particular extending substantially vertical with respect to the perforated lower ventilation profile strip.

[0006] There is further provided a method for attaching panels to a facade, in particular rabat parts or tongue-and-groove panels, with said panels at a distance from said facade for allowing ventilation space between the panels and the facade, the panels comprising a rear surface, the method comprising: attaching a battening to the facade; providing a lower ventilation profile comprising a perforated lower ventilation profile strip extending between the facade and the edge of the panels, ventilatingly closing a space between the facade and the rear surface of the panels; attaching the lower ventilation profile lower battening, the perforated lower ventilation profile strip aligned with the lower edge of the panels.

[0007] The current ventilation profile provides a proper alignment for panels for mounting, and retaining the panels in position. Furthermore, the current ventilation profile provides a proper ventilation possibility at the rear face, between the panels and a facade of insulation material. The dimensions of battening and lower battening strips and ventilation is easily set. Furthermore, the lower ventilation profile due to the various strips provides a solid basis for building a facade panel system using rabat or tongue-and-groove panels.Detailed description of the invention

[0008] In this detailed description, various embodiments are described. As indicated, these embodiments can be combined.

[0009] In an embodiment, the lower ventilation profile is an aluminium extrusion profile. Alternatively, the lower ventilation profile is produced using additive manufacturing, like 3D printing. It can also be extruded or through additional manufacturing produced from polymer material, like thermoplastic material. This may comprise filling material, for instance cellulose natural fiber.

[0010] In an embodiment, the attachment system further comprises an upper ventilation profile that comprises a perforated lower ventilation profile strip extending above the panels. This completes the alignment and / or confinement of the panels.

[0011] In an embodiment, the attachment system further comprises a cover strip comprising an attachment rail and a cover strip attachment profile comprising a perforated attachment profile strip extending parallel to the panel rear surface, and comprising a complementary cover strip attachment rail for in cooperation with the cover strip attachment rail mounting the cover strip at an edge of the panels.

[0012] In an embodiment, the cover strip is an L-profile having the attachment rail.

[0013] In an embodiment of the method, the perforated lower ventilation profile strip comprises a drainage sill extending along a side of the perforated lower ventilation profile strip. This guides away water, preventing it from getting in the battering and insulation behind the panels. In a particular embodiment, the drainage sill in transverse direction inclined from a plane of the perforated lower ventilation profile strip. This helps removal of water in a better way. In an embodiment, the ventilation profile further comprises an abutment strip extending between the perforated lower ventilation profile strip and the drainage sill. In particular the abutment strip extends away from the perforated lower ventilation profile strip and the drainage sill. More in particular, the abutment strip extends substantially vertical with respect to the perforated lower ventilation profile strip. The abutment profile provides an alignment for the panels and adds to the rigidity of the ventilation profile.

[0014] In an embodiment, the ventilation profile abutment strip is aligned with the designed or intended rear panel surface position.

[0015] There is further provided a kit of parts comprising at least two rabat or tongue-and-groove panels and at least one lower ventilation profile to be attached along a, in mounted state of the panels, lower edge of the panels, the lower ventilation profile comprising a perforated lower ventilation profile strip extending between the facade and the edge of the panels, ventilatingly closing a space between the facade and the rear surface of the panels.

[0016] In an embodiment of the kit of parts, the lower ventilation profile comprises a drainage sill extending along a side of the perforated lower ventilation profile strip.

[0017] In particular the drainage sill is in transverse direction inclined from a plane of the perforated lower ventilation profile strip.

[0018] In an embodiment, the lower ventilation profile further comprising an abutment strip extending between the perforated lower ventilation profile strip and the drainage sill.

[0019] In particular, the abutment strip extends away from the perforated lower ventilation profile strip and the drainage sill. More in particular, it extends substantially vertical with respect to the perforated lower ventilation profile strip.

[0020] The term "substantially" herein, such as in "substantially consists", will be understood by the person skilled in the art. The term "substantially" may also include embodiments with "entirely", "completely", "all", etc. Hence, in embodiments the adjective substantially may also be removed. Where applicable, the term "substantially" may also relate to 90% or higher, such as 95% or higher, especially 99% or higher, even more especially 99.5% or higher, including 100%. The term "comprise" includes also embodiments wherein the term "comprises" means "consists of'.

[0021] The term "functionally" will be understood by, and be clear to, a person skilled in the art. The term "substantially" as well as "functionally" may also include embodiments with "entirely", "completely", "all", etc. Hence, in embodiments the adjective functionally may also be removed. When used, for instance in "functionally parallel", a skilled person will understand that the adjective "functionally" includes the term substantially as explained above. Functionally in particular is to be understood to include a configuration of features that allows these features to function as if the adjective "functionally" was not present. The term "functionally" is intended to cover variations in the feature to which it refers, and which variations are such that in the functional use of the feature, possibly in combination with other features it relates to in the invention, that combination of features is able to operate or function. For instance, if an antenna is functionally coupled or functionally connected to a communication device, received electromagnetic signals that are receives by the antenna can be used by the communication device. The word "functionally" as for instance used in "functionally parallel" is used to cover exactly parallel, but also the embodiments that are covered by the word "substantially" explained above. For instance, "functionally parallel" relates to embodiments that in operation function as if the parts are for instance parallel. This covers embodiments for which it is clear to a skilled person that it operates within its intended field of use as if it were parallel.

[0022] Furthermore, the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances and that the embodiments of the invention described herein are capable of operation in other sequences than described or illustrated herein.

[0023] The devices or apparatus herein are amongst others described during operation. As will be clear to the person skilled in the art, the invention is not limited to methods of operation or devices in operation.

[0024] It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design many alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. Use of the verb "to comprise" and its conjugations does not exclude the presence of elements or steps other than those stated in a claim. The article "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements. In the device or apparatus claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage.

[0025] The invention further applies to an apparatus or device comprising one or more of the characterising features described in the description and / or shown in the attached drawings. The invention further pertains to a method or process comprising one or more of the characterising features described in the description and / or shown in the attached drawings.

[0026] The various aspects discussed in this patent can be combined in order to provide additional advantages. Furthermore, some of the features can form the basis for one or more divisional applications.Brief description of the drawings

[0027] Embodiments of the invention will now be described, by way of example only, with reference to the accompanying schematic drawings in which corresponding reference symbols indicate corresponding parts, and in which: Figure 1 schematically depicts an embodiment of a facade assembly of battening, facade panels and lower ventilation profile; Figure 2 a lower ventilation profile in perspective view; Figure 3 a lower ventilation profile in cross-section, Figure 4 an other embodiment of a lower ventilation profile, and Figure 5 the lower ventilation profile of figure 4 in perspective view.

[0028] The drawings are not necessarily on scaleDescription of preferred embodiments

[0029] Figure 1 schematically depicts a facade 2 with battening 7, partly taken away panels, and a lower ventilation profile 8. The battening 7 provides a ventilation space 3 between the facade 2 and the rear surface 6 of the panels or facade panels 1. In this embodiment, a single layer of battening 7 is shown. In order to allow proper ventilation through this ventilation space 3 yet also to prevent bugs to take over the ventilation space 3, separate ventilation strips 9 have been suggested. These plastic ventilation strips 9 from plastic rolls are fixed at positions to close off the ventilation space 3 from being invested with bugs.

[0030] The known plastic ventilation strips are very flexible as they are provided on a roll. The do not assist in proper alignment of panels, for instance.

[0031] In the embodiment of figure 1, the battening 7 is fixed to a facade 2. Then, the lower ventilation profile 8 (see figure 2 and 3) is applied onto a lower battening strip. The lower ventilation profile 8 then provides amongst others an alignment provision for the lower edge of facade panels1. These facade panels can be mounted horizontally. These facade panels 1can also be mounted vertically as indicated in figure 1.

[0032] The lower ventilation profile 8 provides a perforated lower ventilation profile strip 9. The lower ventilation profile strip 9 has ventilation holes 12. The through holes or perforations 12 are selected so small that most insects or larvae cannot pass. Furthermore, a open passage area to total area of the lower ventilation profile strip 9 is selected to be between 0.4 and .95. In particular, this ratio is between 0.5 and 0.99. More in particular, the relation is between 0,6 and 0.95. The holes have at least one diameter below 5 mm. In particular at least one diameter below 4.5 mm. In an embodiment, the at least one diameter is 2-4.5 mm. In most embodiments the diameter is between 3.5 and 4.2 mm. In an embodiment, these holes are substantially oval. The second axis is in an embodiment between 6 and 10 mm. In particular the second axis is between 7 and 9 mm. Often, the second axis is between 7.5 and 85 mm. It provides sufficient ventilation and prevents bugs and larvae from passing.

[0033] The lower ventilation profile strip 9 can be provided with a weakening groove along its length to facilitate reducing a width. In this way, a lower ventilation profile strip 9 can have a width 22of about 15-35 mm or about 35-55 mm. Usually the lower ventilation profile strip 9 has a width of about 20-30 mm or about 45-55 mm.

[0034] The lower ventilation profile 8 further comprises a drainage sill 10. This drainage sill 10 extends along a side of the perforated lower ventilation profile strip 9.

[0035] In particular, the drainage sill 10 is in transverse direction inclined from a plane of the perforated lower ventilation profile strip 9. The drainage sill 10 here has several functions. It should provide a support and alignment for the facade panels 1. The drainage sill 10 should furthermore add in providing a closing off of the space between the lower edge of the facade panels 1 and the ventilation space. Finally, the drainage sill 10 should aid in taking / guiding away water that can run down along the outer surface of the facade panels 1.

[0036] The drainage sill 10 has a (in mounted state) downward running end 23 of about 10-25 mm. Sufficient for guiding water way from the facade. It runs down at an angle of between 10 and 14 degrees for proper drainage. Often, this angle is between 11 and 13 degrees. At its end, it is provided with a nose 13 for rigidity and further drainage.

[0037] The drainage sill 10 adjacent to the abutment strip 11 comprises a flat alignment strip 24 for providing an alignment basis for the facade panels 1. A width of such an alignment strip 24 is between 3 and 6 mm. In particular, such a strip 24 has a width of 4-5 mm.

[0038] Adjacent to the alignment strip 24 the drainage sill 10 of the lower ventilation profile comprises a ventilation step 25 for allowing moisture ventilation. In particular in case of extruded hollow chamber tongue and groove panels, the hollow longitudinal chambers can thus be ventilated. A step height of between 0.5 and 2 mm is sufficient, in particular a step height of 0.7 to 1.5 mm. The step width is about 2-5 mm. In particular, a width of 3-4 mm is sufficient.

[0039] A second step 26 is provided adjacent to the ventilation step 25. This second step 26 is provided to allow water from the ventilation step 25 to flow away, and to allow water from the outer surface of the facade panels to freely flow via the further drainage sill 10. The second step 26 has a height of between 2-5 mm, in particular 2.5-4 mm. The width of the second step is about 4-10 mm, in particular 5-8 mm.

[0040] The lower ventilation profile 8 further comprises an abutment strip 11. This abutment strip 11 extends between the perforated lower ventilation profile strip 9 and the drainage sill 10. In particular the abutment strip 11 extends away from the perforated lower ventilation profile strip 9 and the drainage sill 10. More in particular, the abutment strip 11 extends substantially vertical with respect to the perforated lower ventilation profile strip 9. The abutment strip 11 at one side provides an abutment for the facade panel rear surface 6. This is also referred to as its drainage side or external side 14.

[0041] Furthermore, in an embodiment the abutment strip 11 provides an abutment for the battening 7. This side abutting the battening 7 is also referred to as its inner side or facade side or battening side 15.

[0042] For proper placement and attachment, the abutment strip 11 has a height of at least 15 mm. Usually, a height of 50 mm is sufficient. In most embodiments, in particular with tongue-and-groove panels, a height of between 15 and 30 mm is selected. In particular, a height of between 17 and 25 mm is selected.

[0043] The abutment strip 11 can be provided with a longitudinal groove 16 or positioning groove for an attachment means, for instance a screw. This can be a screw with a head for drilling the selected material. Such a groove 16 can be 0.4-0.6 mm.

[0044] The abutment strip can furthermore be provided with a deepened strip 18 at its drainage side for housing a screw-head. Usually between 1 and 2 mm deep. For proper closing off of the ventilation space and abutment against the rear surface of the facade panels, the abutment strip 11 has a flat surface strip 19 at a lower end of the abutment strip 11, along the deepened strip. The abutment strip along the opposite side to the deepened strip 18 can be provided with a ledge that in a mounted condition presses against the rear surface of the facade panel 1.

[0045] The abutment strip 11 at the battening side usually is provided with a flat surface 21 for properly aligning and closing off.

[0046] In order to provide a proper alignment for the facade panels 1, the lower ventilation profile 8 is of a relative ridged material. It can be made from a more ridged polymer material, for instance fiber reinforced. In a preferred embodiment, the lower ventilation profile 8 is from aluminium. For aesthetic purposes, the aluminium usually is coated, for instance anodised. Usually, the lower ventilation profile 8 is between 1 and 2 mm thick. In a particular embodiment, the ventilation profile is between 1.2 and 1.7 mm thick. In particular, it was found that a thickness of between 1.4 and 1.6 mm is sufficient to provide a sufficiently ridged lower ventilation profile 8. In particular in combination with material selection and the orientation of the ventilation strip 9, drainage sill 10 and abutment strip 11.

[0047] In figure 4, an alternative attachment system is illustrated. Here a battening 7 of two layers is shown. In order to provide a ventilation profile that closes off the ventilation space 3 behind the facade panels 1, a wider perforated lower ventilation profile strip 9 is illustrated. In figure 5, this lower ventilation profile 8 is shown in perspective view. The wider perforated lower ventilation profile strip 9 in this embodiment has a longitudinal groove that allows easy removal of part of the perforated lower ventilation profile strip 9 in order to make it as wide as the version of figure 2 and 3. In this way, only one version of the lower ventilation profile 8 needs to be produced and distributed.

[0048] In am embodiment, the attachment system at an opposite end of a facade cladding with the facade panels 1 can be provided with an upper ventilation profile comprising a perforated upper ventilation profile strip extending above the facade panels 1. In this way a ventilation channel can be provided from the perforated lower ventilation profile strip 9 along the ventilation space 3 and the ventilation profile strip of the upper ventilation profile. The ventilation profile strip of the upper ventilation profile this in fact at one end provides a physical closure of the ventilation space 3 in order to prevent unwanted insects, and other creatures to invest the ventilation space 3. The upper ventilation profile in an embodiment comprises a strip extending over the upper line of facade panels 1. The upper ventilation profile in an embodiment further comprises a holding groove for taking up a lower edge of the facade panels 1. In an embodiment, the upper ventilation profile comprises the ventilation strip extending above the holding groove. The ventilation strip in a further embodiment comprises a sealing strip at a side opposite the holding groove and designed for closing off further access to the ventilation space 3, the battening 7 and the facade 2. In an embodiment the sealing strip abuts the facade 2.

[0049] It will also be clear that the above description and drawings are included to illustrate some embodiments of the invention, and not to limit the scope of protection. Starting from this disclosure, many more embodiments will be evident to a skilled person. These embodiments are within the scope of protection and the essence of this invention and are obvious combinations of prior art techniques and the disclosure of this patent.Reference numbers

[0050] 1 Facade panels 2 Facade 3 Ventilation space 4 Tongue 5 Groove 6 Facade panel rear surface 7 Battening 8 Ventilation profile 9 perforated lower ventilation profile strip 10 drainage sill 11 abutment strip 12 ventilation holes or ventilation perforation 13 drainage sill nose 14 abutment strip external side 15 abutment strip battening side 16 abutment strip positioning groove 17 abutment strip height 18 deepened strip 19 flat surface strip 20 ledge 21 abutment strip flat surface 22 lower ventilation profile strip width 23 drainage sill downward running end 24 drainage sill flat alignment strip 25 drainage sill ventilation step

Examples

Embodiment Construction

[0029]Figure 1 schematically depicts a facade 2 with battening 7, partly taken away panels, and a lower ventilation profile 8. The battening 7 provides a ventilation space 3 between the facade 2 and the rear surface 6 of the panels or facade panels 1. In this embodiment, a single layer of battening 7 is shown. In order to allow proper ventilation through this ventilation space 3 yet also to prevent bugs to take over the ventilation space 3, separate ventilation strips 9 have been suggested. These plastic ventilation strips 9 from plastic rolls are fixed at positions to close off the ventilation space 3 from being invested with bugs.

[0030]The known plastic ventilation strips are very flexible as they are provided on a roll. The do not assist in proper alignment of panels, for instance.

[0031]In the embodiment of figure 1, the battening 7 is fixed to a facade 2. Then, the lower ventilation profile 8 (see figure 2 and 3) is applied onto a lower battening strip. The lower ventilation pro...

Claims

1. An attachment system for attaching panels (1) to a facade (2), in particular rabat parts or tongue-and-groove panels, with said panels at a distance from said facade for allowing ventilation space (3) between the panels (1) and the facade (2), the panels comprising a rear surface (6), said attachment system comprising a sub-frame or battening (7) attached to the facade (2) and rear surfaces (6) of said panels for providing the ventilation space (3); a lower ventilation profile (8) to be attached along a, in mounted state of the panels, lower edge of the panels (1), the lower ventilation profile (8) comprising a perforated lower ventilation profile strip (9) extending between the facade and the edge of the panels, ventilatingly closing a space between the facade and the rear surface of the panels the lower ventilation profile (8) comprises a drainage sill (10) extending along a side of the perforated lower ventilation profile strip (9), in particular the drainage sill in transverse direction inclined from a plane of the perforated lower ventilation profile strip, the lower ventilation profile (8) further comprising an abutment strip (11) extending between the perforated lower ventilation profile strip (9) and the drainage sill 10), in particular extending away from the perforated lower ventilation profile strip (9) and the drainage sill (10), more in particular extending substantially vertical with respect to the perforated lower ventilation profile strip.

2. The attachment system of claim 1, wherein the lower ventilation profile (8) is an aluminium extrusion profile, or an extruded or through additional manufacturing produced polymer profile.

3. The attachment system according to any one of the preceding claims, further comprising an upper ventilation profile comprising a perforated lower ventilation profile strip extending above the panels.

4. The attachment system according to any one of the preceding claims, further comprising a cover strip comprising an attachment rail and a cover strip attachment profile comprising a perforated attachment profile strip extending parallel to the panel rear surface, and comprising a complementary cover strip attachment rail for in cooperation with the cover strip attachment rail mounting the cover strip at an edge of the panels.

5. The attachment system according to the previous claim, wherein the cover strip is an L-profile having the attachment rail.

6. A method for attaching panels to a facade, in particular rabat parts or tongue-and-groove panels, with said panels at a distance from said facade for allowing ventilation space between the panels and the facade, the panels comprising a rear surface, the method comprising: - attaching a battening to the facade; - providing a lower ventilation profile comprising a perforated lower ventilation profile strip extending between the facade and the edge of the panels, ventilatingly closing a space between the facade and the rear surface of the panels; - attaching the lower ventilation profile lower battening, the perforated lower ventilation profile strip aligned with the lower edge of the panels.

7. The method of claim 6, wherein the perforated lower ventilation profile strip comprises a drainage sill extending along a side of the perforated lower ventilation profile strip, in particular the drainage sill in transverse direction inclined from a plane of the perforated lower ventilation profile strip, and an abutment strip extending between the perforated lower ventilation profile strip and the drainage sill, in particular extending away from the perforated lower ventilation profile strip and the drainage sill, more in particular extending substantially vertical with respect to the perforated lower ventilation profile strip, wherein the ventilation profile abutment strip is aligned with the designed rear panel surface position.

8. A kit of parts comprising a series of the rabat or tongue-and-groove panels (1) and at least one lower ventilation profile (8) to be attached along a, in mounted state of the panels, lower edge of the panels (1), the lower ventilation profile (8) comprising a perforated lower ventilation profile strip (9) extending between the facade and the edge of the panels, ventilatingly closing a space between the facade and the rear surface of the panels the lower ventilation profile (8) comprises a drainage sill (10) extending along a side of the perforated lower ventilation profile strip (9), in particular the drainage sill in transverse direction inclined from a plane of the perforated lower ventilation profile strip, the lower ventilation profile (8) further comprising an abutment strip (11) extending between the perforated lower ventilation profile strip (9) and the drainage sill 10), in particular extending away from the perforated lower ventilation profile strip (9) and the drainage sill (10), more in particular extending substantially vertical with respect to the perforated lower ventilation profile strip.

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