WO2007020329A1

WO2007020329A1 - Lead-through arrangement

Info

Publication number: WO2007020329A1
Application number: PCT/FI2006/050355
Authority: WO
Inventors: Seppo Reunanen
Original assignee: Meptek Oy
Priority date: 2005-08-16
Filing date: 2006-08-11
Publication date: 2007-02-22
Also published as: FI20055436A0; FI20055436L; EP1915490A4; EP1915490A1; NO20081302L

Abstract

The invention relates to a penetration (2) for a roof, the penetration comprising a penetration plate (4) substantially parallel with the roof and an opening (6) in the penetration plate (4). In accordance with the invention, the penetration (2) is made of a first material, which is provided seamlessly with at least one seal (19, 12) of a second material to form an integral 2-component structure.

Description

LEAD-THROUGH ARRANGEMENT

BACKGROUND OF THE INVENTION

[0001] The invention relates to a method according to the preamble of claim 1 and particularly to a method of manufacturing a penetration for a roof, the penetration comprising a penetration plate, an opening in the penetration plate and one or more seals, which are arranged to seal a seam area between the roofs roofing and the penetration plate. The present invention further relates to a penetration according to the preamble of claim 15, particularly intended for a roof, the penetration comprising a penetration plate, an opening in the penetration plate and one or more seals, which are arranged to seal a seam area between the roofs roofing and the penetration plate.

[0002] A penetration has to be arranged through the roofing material of a roof for leading ventilation pipes, antenna wiring, sewer ventilation pipes, pipes for smoke ventilation system or the like through the roof and for arranging manholes, roof hatches or the like. Such penetrations usually comprise a penetration plate, which is substantially parallel with the roofs roofing and intended to cover the hole made in the roofing at the penetration, and an opening for a pipe or the like that is to be led through the roofing sheet of the roof or for making a hole through the roofing. Such a penetration is usually mounted by placing the upper edge of the penetration plate under the roofs roofing sheet and the lower edge on top of the roofs roofing sheet.

[0003] Since an opening has to be made in the roofs roofing material at the penetration, the penetration poses the risk of water, dirt and other unwanted material of getting through the roofing material of the roof at the penetration. For this reason, seals have to be arranged between the penetration plate of the penetration and the roofing that seal overlapping seams between the penetration plate and the roofing so that water and other materials cannot enter the building through the penetration. In prior art, this kind of sealing has been implemented by attaching seals to the penetration's penetration plate that assume a position between the roofing material and the penetration plate. Usually, seals are attached both to the upper and the lower edge of the penetration plate, in some embodiments also to the side edges. In accordance with prior art, the seal attached to the upper edge is, in the penetration's use position, mounted at the upper edge of the penetration plate and on top of it so that when the penetration is in place, the upper edge of the penetration plate is under the roofing material, whereby the seal arranged on top of the penetration plate at its upper edge seals the seam area between the roofing material and the penetration plate. Correspondingly, when in use, the lower edge of the penetration plate is on top of the roofing material, in which case the seal is at- tached to the bottom of the lower edge of the penetration plate so as to seal the seam area between the penetration plate and the roofing material. If necessary, seals may also be attached to the side edges of the penetration plate in a corresponding manner.

[0004] The seals to be attached to the penetration are preferably flexible and can be shaped to suit the profile of the penetration plate and roofing material. These prior art seals are separate seals, which are attached to the penetration plate during assembly. Seals are attached by gluing, mechanically or in another similar manner. A seal is typically attached at the construction site immediately before the installation of the penetration. [0005] A problem associated with the arrangement described above is that, due to the use of a separate seal to be attached to the penetration, the seal does not always adhere to the penetration plate accurately and properly. In that case, the sealing of the penetration does not function in the best possible manner as a gap may be left between the penetration plate and the seal or between the penetration plate and the roofing material, and thus water, for example, may get under the roofing material. Furthermore, since the thermal movement of tin roofs, in particular, is considerable due to variations in the temperature, thermal movement may displace or at least partly tear such separate seals. In addition, one may forget to attach them at the construction site or they may be attached incorrectly.

BRIEF DESCRIPTION OF THE INVENTION

[0006] The object of the invention is to provide a method of manufacturing a penetration and a penetration so as to solve the above-mentioned problems. The object of the invention is achieved by a method according to the characterizing part of claim 1 , the method being characterized in that it comprises the following steps: making a penetration of a first material; providing the penetration with at least one seal of a second material so that the first and the second material join seamlessly to each other and form a 2-component structure. The object of the invention is further achieved by a penetration ac- cording to the characterizing part of claim 15, the penetration being character- ized in that it is made of a first material, which is seamlessly provided with at least one seal of a second material to form an integral 2-component structure. The object of the invention is further achieved by the use of a multi-component mould according to claim 25 and by the use of a multi-component structure according to claim 27.

[0007] Preferred embodiments of the invention are disclosed in the dependent claims.

[0008] The invention is based on providing seals made of a second material seamlessly in a penetration made of a first material as an integral part of the penetration. This produces a 2-component structure where the penetration and seals made of different materials integrally join to each other. Such a 2-component structure is achieved by preferably using a 2-component mould comprising a first moulding space, which defines a penetration, and at least one second moulding space, which defines at least one seal. In that case, first material rendered to a fluid state is supplied to the first moulding space of the 2-component mould to form a penetration, and second material rendered to a fluid state is supplied to at least one second moulding space of the 2- component mould to form at least one seal so that the first and the second material join seamlessly to each other and form a 2-component structure. [0009] An advantage of the method and system according to the invention is that the penetration and seals have an integral structure where the seals and penetration can be made of different materials that suit the application concerned. This kind of seamless and integral 2-component structure ensures that the seal remains attached and is always securely in place and at a correct location when a penetration is being installed. Furthermore, the thermal movement of the roofing material cannot displace it.

BRIEF DESCRIPTION OF THE FIGURES

[0010] The invention will now be described in greater detail by means of preferred embodiments with reference to the accompanying draw- ings, in which:

Figure 1 illustrates a penetration according to the present invention obliquely from above; and

Figure 2 illustrates a penetration according to Figure 1 obliquely from below. DETAILED DESCRIPTION OF THE INVENTION

[0011] Figure 1 illustrates an axonometric view of an embodiment of the penetration 2 according to the invention obliquely from above. The penetration 2 preferably comprises a penetration plate 4, which is intended to be substantially parallel with the roofing material of a roof when the penetration is in place. In the embodiment of Figure 1 , the penetration plate 4 has a wavy profile, which corresponds to the wavy shape of a conventional tile roofing. The profile of the penetration plate 4 may also be completely straight or waved in another manner or another kind of profile. However, the most important thing is that the penetration's profile at least reasonably corresponds to the profile of the roofing. The penetration plate 4 is typically four-sided, in which case it comprises, when the penetration is installed in the roof structure, an upper edge 18, a lower edge 20 and two side edges 22, which connect the upper and the lower edge. The penetration plate 4 may naturally be shaped in another manner; for example, it may be circular, elliptical, triangular, etc.

[0012] The penetration plate 4 of the penetration is provided with an opening 6, through which a ventilation pipe, for example, may be introduced. The opening may have any size and shape depending on the application in question. According to Figure 1 , at least the top part of the opening 6 may be provided with a collar protruding upwards from the penetration plate 4. The collar 8 may also be replaced by various bulb arrangements or various bulbs or covers may be arranged in the collar 8. If necessary, the bottom of the penetration plate 4 may also be provided with a collar protruding downwards from the penetration plate. [0013] The penetration 2 shown in Figure 1 further comprises a hole or holes 16 made in the penetration plate 4 for attaching the penetration to a roof structure by screws or other similar fastening means, for example.

[0014] In accordance with Figure 1 , the upper edge 18 of the penetration plate 4 is provided with a seal 10 protruding upwards from the top sur~ face of the penetration plate 4. Correspondingly, as shown in Figure 2, the lower edge 20 of the penetration plate 4 is provided with a seal protruding downwards from the bottom surface of the penetration plate 4. In the solution according to Figures 1 and 3, the seals are provided in the manner described above only at the upper and lower edges 18, 20 of the penetration plate 4 but seals may also be provided at the side edges 22. Furthermore, the seals may extend upwards, downwards or upwards and downwards from the plane of the penetration plate 4. The seals may also extend parallel with the penetration plate 4 from the edges 18, 20 and 22. Alternatively, the seals may be provided in the vicinity of the edges 18, 20 and 22 or around the penetration's opening 6 on the lower surface of the penetration plate 4 or at another suitable location. [0015] The penetration 2 according to Figures 1 and 2 is a typical penetration to be mounted on a roof. When such a roof penetration 2 is installed in an opening made in the roofing, the upper edge of the penetration plate 4 is placed under the roofing, whereby the seal 10 seals the seam area between the roofing and the penetration plate 4. The lower edge 20 of the penetration plate 4, on the other hand, is placed on top of the roofing, whereby the seal 12 seals the seam area between the penetration plate 4 and the roofing. The side edges 22 of the penetration plate 4 may be placed either under or on top of the roofing or so that one of them is under the roofing and the other on top of the roofing. In that case, the side edges 22 may be, if neces- sary, provided with suitable seals.

[0016] In accordance with the present invention, the roof penetration 2 comprises a penetration plate 4, which, when the penetration is in place, is preferably parallel with the roofs roofing, and an opening 6 in the penetration plate and a collar 8 or the like extending around the opening 6. The pene- tration 2 is made of a first material, which is seamlessly provided with at least one seal 10, 12 made of a second material to form an integral 2-component structure. In that case, the seal or seals 10, 12 are provided at the edge of the penetration's 2 penetration plate 4 or in the vicinity of the edge either below and/or above the penetration plate 4. In that case, in a preferred embodiment, the seal, seals or some of the seals 10, 12 are arranged to extend along the whole length of the edge of the penetration's 2 penetration plate.

[0017] According to the invention, the penetration 2 and the seals provided therein are made of different materials and they seamlessly join to each other forming a 2-component structure. The first and the second material are typically plastic-based materials which are seamlessly joined to each other to form a 2-component structure. The penetration's 2 material is usually relatively hard, whereas the seal's material is usually flexible and softer. Alternatively, the seal may also be made of rubber-based material. The materials of the penetration and seal may vary according to the application and may be any materials suitable for forming a 2-component structure. [0018] In an embodiment, such a 2-component penetration with a 2- component structure formed of two materials is formed by using a 2- component mould in extrusion or in another similar technique. As the materials of the seals and penetration are plastic-based, the seal and the penetration join seamlessly to each other as a result of vulcanization. Vulcanization between the materials binds the seals and the penetration made of different materials seamlessly together, forming one solid and integral structure.

[0019] In accordance with Figure 2, the penetration may further be provided with elevation pieces 14, which have been made of a third material. The purpose of the elevation pieces 14 is to prevent generation of stress corrosion at the attachment points 16 of the penetration's 2 penetration plate 2 and facilitate the installation of the penetration plate at a suitable height from its base in the roof structure. It should be noted, however, that the elevation pieces may also be placed somewhere else than at the attachment points of the penetration plate 4. In the same manner as the seals, the elevation pieces 14 are provided seamlessly as an integral part of the penetration 2 below the penetration plate 4. In that case, the elevation pieces may also be formed in a 2-component mould, in which case they are made of the same material as the penetration or the seals. In that case, the third material is the same as the first or the second material. The elevation pieces 14 are preferably made of the same material as the seals, in which case they are flexible. If the elevation pieces 14 are made of a material different from that of the penetration 2 and seals 10, 12, a 3-component mould may be used in the manufacture to produce a 3-component structure. [0020] The method of manufacturing a roof penetration 2 according to the present invention, where the penetration 2 comprises a penetration plate 4 parallel with the roof and an opening in the penetration plate, the method comprising making a penetration 2 of a first material and providing at least one seal 10, 12 of a second material in the penetration 2 so that the first and the second material join seamlessly to each other and form a 2-component structure. The method described above for forming a penetration 2 according to the invention can be carried out by 2-component moulding. In that case, a 2- component mould is produced for manufacturing a penetration, and the penetration 2 is formed by supplying first material in a fluid state to a first moulding space of the 2-component mould, which defines the penetration. The method further comprises providing the penetration 2 with at least one seal 10, 12 by supplying second material in a fluid state to at least one second supplying second material in a fluid state to at least one second moulding space of the 2-component mould, which defines the seal. In a preferred case, the penetration 2 is formed in the 2-component mould before forming the seal or seals 10, 12. More precisely, the method comprises providing a 2- component mould comprising a first moulding space, which defines a penetration 2, and at least one second moulding space, which defines at least one seal 10, 12. After this, first material rendered to a fluid state is supplied to the first moulding space of the 2-component mould, and second material rendered to a fluid state is supplied to at least one second moulding space of the 2- component mould to form at least one seal 10, 12 so that the first and the second material join seamlessly to each other and form a 2-component structure. In such a 2-component mould, the second moulding space that defines the seal may be opened and closed hydraulically/mechanically when it is held in a closed position by barrier means between the first and the second moulding space. Before the formed product with a 2-component structure is removed from the mould, the first and the second material are cooled down. Cooling means for cooling the materials are preferably integrated into the mould.

[0021] In the method, the seal or seals 10, 12 may be provided at the edge of the penetration's 2 penetration plate 4 or in the vicinity of the edge and further below and/or above the penetration's 2 penetration plate 4. Furthermore, the seal, seals or some of the seals 10, 12 are formed to extend substantially along the whole length of the edge of the penetration's penetration plate 4. Some of the seals may, however, extend only along part of the length of the penetration plate 4. [0022] The method may further comprise a step of providing at least one elevation piece 14 of a third material below the penetration's 2 penetration plate 4 so that the first and the third material join seamlessly to each other. In that case, at least one elevation piece 14 is provided in the penetration 14 by supplying third material in a fluid state to at least one third moulding space, which defines the elevation piece 14. When the second and the third material are different materials, the method is carried out by means of a 3-component mould. The elevation piece 14 may also be attached to the penetration plate 4 by vulcanization.

[0023] As regards the invention described above, it should further be noted that if the penetration comprises several seals and/or elevation pieces, these seals and/or elevation pieces may be formed of different materi- als, which provides a multi-component structure that may consist of several different materials. In that case, a multi-component mould with several moulding spaces is used.

[0024] It will be obvious to a person skilled in the art that as technology advances, the inventive concept can be implemented in various ways. The invention and its embodiments are thus not limited to the examples described above but they may vary within the scope of the claims.

Claims

1 . A method of producing a penetration (2) for a roof, the penetration (2) comprising a penetration plate (4), an opening (6) in the penetration plate and one or more seals (10, 12), which are arranged to seal a seam area between the roofs roofing and the penetration plate, characterized in that the method comprises the following steps: making a penetration (2) of a first material; and providing the penetration (2) with at least one seal (10, 12) of a second material so that the first and the second material join seamlessly to each other and form a 2-component structure.

2. A method according to claim 1 , characterized in that the method is carried out by 2-component moulding.

3. A method according to claim 1 or 2, characterized in that the penetration (2) is formed by supplying first material in a fluid state to a first moulding space of a 2-component mould, which defines the penetration.

4. A method according to any one of claims 1 to 3, characterized in that the penetration (2) is provided with at least one seal (10, 12) by supplying second material in a fluid state to at least one second moulding space of the 2-component mould, which defines the seal.

5. A method according to claim 1 , characterized in that the method comprises: forming a 2-component mould which comprises a first moulding space, which defines the penetration (2), and at least a second moulding space, which defines at least one seal (10, 12), supplying first material rendered to a fluid state to the first moulding space of the 2-component mould to form a penetration, supplying second material rendered to a fluid state to at least one second moulding space to form at least one seal (10, 12) so that the first and the second material join seamlessly to each other and from a 2-component structure, cooling the first and the second material, and removing the formed product from the 2-component mould.

6. A method according to any one of claims 3 to 5, ch aracterized in that the first and the second moulding space have been separated from each other by openable barrier means.

7. A method according to any one of claims 1 to 6, characterized in that the seal or seals (10, 12) are provided at the edge of the penetration's (2) penetration plate (4) or in the vicinity of the edge.

8. A method according to claim 7, characterized in that the seal, seals or some of the seals (10, 12) are provided below and/or above the penetration's (2) penetration plate (4).

9. A method according to claim 7 or 8, characterized in that the seal, seals or some of the seals (10, 12) are provided to extend substantially along the whole length of the edge of the penetration's (2) penetration plate.

10. A method according to any one of claims 1 to 9, characterized in that the first and the second material are plastic-based materials, which are joined seamlessly to each other by vulcanization to form a 2- component structure.

11. A method according to any one of claims 1 to 10, character- ized in that the method further comprises a step of providing at least one elevation piece (14) of a third material below the penetration's (2) penetration plate (4) so that the first and the third material join seamlessly to each other.

12. A method according to claim 11 , characterized in that the penetration (2) is provided with at least one elevation piece (14) by supplying third material in a fluid state to at least one third moulding space, which defines the elevation piece (14).

13. A method according to claim 11 or 12, characterized in that the second and the third material are the same.

14. A method according to any one of claims 11 to 13, charac- terized in that the second and the third material are different, in which case the method is carried out by a 3-component mould.

15. A penetration (2) for a roof, the penetration (2) comprising a penetration plate (4), an opening (6) in the penetration plate and one or more seals (10, 12), which are arranged to seal a seam area between the roofs roofing and the penetration plate (4), characterized in that the penetration (2) is made of a first material, which is seamlessly provided with at least one seal (10, 12) of a second material to form an integral 2-component structure.

16. A penetration (2) according to claim 15, characterized in that the seal or seals (10, 12) are provided at the edge of the penetration's (2) penetration plate (4) or in the vicinity of the edge.

17. A penetration (2) according to claim 16, characterized in that the seal, seals or some of the seals (10, 12) are provided below and/or above the penetration's (2) penetration plate (4).

18. A penetration (2) according to claim 16 or 17, characterized in that the seal, seals or some of the seals (10, 12) are provided to extend substantially along the whole length of the edge of the penetration's (2) penetration plate.

19. A penetration (2) according to any one of preceding claims 16 to 18, cha racterized in that at least one seal (10) is arranged to extend in the use position above the penetration plate (4) at the upper edge of the penetration plate (4) or in its vicinity and at least one seal (12) is arranged to extend below the penetration plate (4) at the lower edge of the penetration plate (4) or in its vicinity.

20. A penetration (2) according to any one of claims 15 to 19, characte rized in that the first and the second material are plastic-based materials, which are joined seamlessly to each other to form a 2-component structure.

21 . A penetration (2) according to claim 20, ch aracterized in that the first and the second material are joined to each other by vulcanization.

22. A penetration (2) according to any one of claims 15 to 21 , characterized in that at least the penetration (2) and at least one seal (10, 12) have been manufactured in a 2-component mould.

23. A penetration (2) according to any one of claims 15 to 22, characterized in that the penetration (2) further comprises at least one ele- vation piece (14), which has been provided seamlessly of a third material below the penetration plate (4).

24. A penetration (2) according to claim 23, ch aracterized in that the second and the third material are the same.

25. Use of a multi-component mould for manufacturing a multi- component structure, which comprises a roof penetration (2) made of a first material, which includes a penetration plate (4) and an opening (6) in the penetration plate and at least one seal (10, 12) made of a second material, which is arranged to seal a seam area between the roofs roofing and the penetration plate (4).

26. Use according to claim 25, characterized in that the multi- component mould is a 2-component mould.

27. Use of a seamless multi-component structure in a roof penetration (2), the multi-component structure comprising a penetration (2) made of a first material, which comprises a penetration plate (4) and an opening (6) in the plate, and at least one seal (10, 12) of a second material provided in the penetration (2), the seal being arranged to seal a seam area between the roofs roofing and the penetration plate.

28. Use according to claim 27, characterized in that the multi- component structure is a 2-component structure.