EP3141673A1 - Folded sheet - Google Patents

Abstract

The invention relates to a folded or edged or roll-formed sheet metal (1, 1 ') of a roof skin or a wall cladding, or gutter or the like with an outer side (2) and an inner side (3), wherein bent at the edging sheet metal sections (1 b, 1b ', 1c, 1c', 1d, 1e, 1f) of the sheet (1, 1 ') has at least one coating (4, 4'), and the coating (4, 4 ') over the entire surface or part of the surface on the - ( 3) - of the sheet (1, 1 ') is formed, the coating (4, 4') has permanently elastic properties, and the coating (4, 4 ') at least one rubber-containing material or the like, for. As EPDM, TPO, etc. has.

Description

The invention relates to a folded or edged sheet metal roofing or wall cladding, with an outside and an inside, said bevelled sheet metal portions of the sheet of the connection with other such sheets and the sheet has at least one coating which is applied on the inside ,

Such a coated sheet of a roofing or wall paneling is for example from the DE 44 24 751 A 1, in the inside, a protective layer of epoxy resin paint is to be applied to the sheet, which is to prevent corrosion in Titanzinkblechen by accumulating under the roof skin moisture and condensate precipitation. This coating of epoxy resin paint is characterized by an extremely small layer thickness between 1 .mu.m and 6 .mu.m.

Finally, it is pointed to as further prior art DE 2058762 . DE 3909498 . DE 10006637 . DE 1141071 . DE U-1783415 ,

Furthermore, reference is made to the prior art according to US-A-5,001,881 such as JP-2003-020757 , This document proposes a rubber coating with a layer thickness of 0.8 to 2mm.

In practice, however, it has been shown that processing of metal sheets with such a layer thickness is fundamentally completely unsuitable.

In order to achieve in addition to the corrosion protection and a seal two adjacent, for example, via a standing seam interconnected sheets or an insulating, in particular sound-insulating effect, further measures must be taken. Corresponding measures can be introduced into the standing seam sealing means, such as sealing strips, or layers of insulating material, which can be arranged between a substructure and the sheets of the roof or wall cladding.

The object of the invention is a roof or wall cladding. to provide both protection against corrosion and an impermeable moisture sealing effect and insulating effect.

The solution of this object is achieved with the features of patent claim 1 and the features of claim 12. Further developments and advantageous embodiments are given in the subordinate claims.

The folded or edged sheet of a roof cladding or a wall cladding, with an outer side and an inner side, wherein bevelled sheet metal portions of the sheet of the sheet serve with other such sheets and the sheet has at least one coating which is applied on the inside, is characterized according to the invention, characterized in that the coating is formed over the entire surface of the inside of the sheet, that the coating is formed over part of the surface or on the inside of the sheet and that the coating has permanently elastic properties, and that the coating preferably comprises a rubber-containing material. The use of an olefin-based thermoplastic elastomer (TPO), an ethylene-propylene-diene rubber (EPDM), ie a synthetic rubber material is also suitable. EPDM materials belong to the static copolymers with a saturated polymer backbone.

The rubber-containing material is permanently elastic and suitable for permanently sealing the sheets of a covered roof skin or wall cladding against penetrating moisture without the need for further aids such as foam tapes or rubber bands to be arranged in the area between the sheets. In addition, the full-surface coated inside of the sheet is also protected against corrosion. The coating preferably consists of the rubber-containing material, which in a further embodiment is cellular rubber or silicone rubber or a mixture of silicone rubber and cellular rubber. As mentioned, instead of a rubberhaltign material such. As EPDM, alternatively, a thermoplastic elastomer based on olefin, z. TPO or PP (polypropylene) / EPDM, e.g. B. Santoprene Suitable material, as well as TPA (Thermoplastic Copolyamides, TPC (Thermoplastic Polyester Elastomers), Thermoplastic Copolyesters, TPS (Styrene Block Copolymers, SBS, SEBS, SEPS, SEEPS, MBS), TPU (urethane-based thermoplastic elastomers, eg Elastollan or Desmopan or also a TPV (crosslinked thermoplastic elastomers based on olefins, mainly PP / EPDM, eg Salink (DSM), Forprene (SoFter).) The aforementioned materials, ie the rubber-containing material, be it natural rubber or synthetic rubber or the thermoplastic elastomers, etc. have the advantage that they behave at room temperature like classical representatives, but become deformable when heated.An advantage of the aforementioned elastic plastic is also the ability to weld them, so as to produce waterproof joints.

Insofar as it is also described in the present application that the coating does not take place over the whole area but over part of the area, this means an area coverage of at least approximately 40%, preferably at least approximately 60% -80%, whereby the application of parallel strips or crossed stripes in the Essentially, an overall uniform distribution of the coating is provided.

According to a development, the coating is foamed on the inside of the folded or provided for edging sheet on the inside, wherein the foaming an even higher elasticity of the coating is achieved. According to a preferred embodiment, the rubber-containing material may also have been applied by vulcanization to the inside of the sheet.

The fact that the coating is applied over the entire surface or part of the surface on the inside, preferably foamed and has a thickness of at least 0.1 mm, in particular a thickness of at most 1 mm, in particular a thickness between 0.2 mm and 0.6 mm, is also insulation against sound, but at least given a sound reduction function. This can ideally be several 2-6 dB or more.

For example, rainfall on the roof cladding or wall cladding is perceived less loudly within a building clad with the roof cladding or wall cladding.

In order to connect the sheets side by side in a simple manner, the edgings are advantageously provided on the edge side on two opposite sides of the sheet, so that juxtaposed sheets abut each with a canted edge.

In a further embodiment of the sheet, two edgings are formed or provided in a predetermined, same direction at a first edge, wherein the first edging, viewed from a sheet metal center portion, takes place to the outside of the sheet. According to another embodiment, three edgings are formed or provided on a second edge of the sheet metal, the first edging proceeding from the sheet metal center portion towards the outside and the edgings further away from the sheet metal center portion in the opposite direction to the first edging.

The first edge thus has two folded sheet metal sections and the second edge has three folded sheet metal sections, wherein the folded sheet metal sections of the second edge enclose those of the first edge when a sheet is applied with the second edge to a first edge of another sheet. The folded or edged sheet metal sections form on the coated inside of the sheet bearing surfaces, on each of which a folded sheet metal portion of an adjacent sheet can be brought into abutment. The contact surfaces of the first edge are advantageously each determined for contact with contact surfaces of the second edge. Accordingly, the bent sheet metal sections of the first and second edge starting from the central sheet metal section are the same size or the folded sheet metal sections of the second edge slightly larger than that of the first edge, that is, the distances of the edgings on the second edge are at least the thickness of the coated sheet, in particular by twice the thickness of the coated sheet, greater than the distances of the edgings at the first edge.

In a preferred embodiment, the sheet is deflected at the edges each at an angle of 90 °, so that the sheet metal center portion and the folded sheet metal sections are each arranged at right angles to adjacent sections.

With the folded sheet metal sections of two adjacent to each other and to be joined sheets then a standing seam or Doppelstehfalz can be easily formed. Alternatively, a sheet roof can be formed with a metal sheet with bevelled on both sides according to the first edge sheet metal sections, in which case each formed between the two edgings sheet metal sections abut each other with their contact surfaces and a strip is pushed onto the outer folded sheet metal sections, which on the outer sheet metal sections is jammed and this encloses it. Other alternative designs, such as trapezoidal bent sheets, are also possible.

Furthermore, the invention also relates to a composite of sheets which form a roof cladding or wall cladding. This composite of sheets is inventively characterized in that the roof or wall cladding of the aforementioned, folded or provided for edging sheets is formed. The connection between the sheets is preferably formed as a standing seam or Doppelstehfalz.

In order to be able to connect this composite of sheets with a substructure, according to a further development in the standing seams or Doppelstehfalze connectors are clamped with which the roof or wall cladding can be attached to a substructure. These connectors are according to the sheets folded, dimensionally stable metal or plastic bands, which are connectable to a inside with respect to the roof cladding or wall panel forming sheets projecting end with a substructure. For this purpose, in particular bores may be provided in the connectors, in which screws, nails, clamps or other connecting means can be fixed, which are then in or with the substructure, usually a wooden battens or the like, fixable or connectable.

As an alternative to an edging of the sheet, it is also possible for the sheet to be roll-formed and thus to have a desired cross-sectional profile through a roll-forming process, for example by means of a roll forming process. B. wavy or the like, and thus the sheet according to the invention is also suitable to form a gutter, in which upwards so inside in facing side, the coating is.

The already described sound-insulating or sound-reducing effect is possible not only by a full-surface coating, but also a partial coating.

Incidentally, the coating according to the invention also has the technical function and the advantage that it represents a condensate stop which completely prevents or at least reduces the formation of condensate.

Figur 1:

ein Querschnitt durch ein erfindungsgemäß gekantetes Blech;

Figur2:

eine erste Ausführung einer Verbindung zweier erfindungsgemäßer Bleche gemäß Fig. 1 im Querschnitt;

Figur3:

eine zweite Ausführung einer Verbindung zweier gekanteter Bleche gemäß Figur 1 im Querschnitt;

Figur4:

eine andere Ausführung einer Verbindung zwischen zwei erfindungsgemäßen Blechen im Querschnitt; und

Figur5:

eine weitere Verbindung zweier erfindungsgemäßer Bleche mit einer alternativ gekanteten Ausführung.

An embodiment of the invention is shown in the drawing. Show it:

FIG. 1:

a cross section through a folded sheet metal according to the invention;

Figur2:

a first embodiment of a compound according to the invention of two sheets Fig. 1 in cross-section;

Figur3:

a second embodiment of a compound of two folded sheets according to FIG. 1 in cross-section;

Figur4:

another embodiment of a connection between two inventive Sheets in cross section; and

Figur5:

a further connection of two sheets according to the invention with an alternatively folded version.

The cross section according to FIG. 1 shows a folded according to the invention sheet 1 with an outer side 2 and an inner side 3, wherein on the inner side 3 has a permanently elastic property having coating 4 of silicone rubber or cellular rubber is foamed. The sheet metal 1 is subdivided into a sheet metal center section 1a and into a plurality of sheet metal sections 1b, 1c, 1d, 1e, 1f bent to form the sheet metal center section 1a. At a first edge 5, this coated sheet 1 has two bends of 90 ° each. These edgings of the first edge 5 are each made in the same direction, so that the outer folded sheet metal section 1 b of the first edge 5 is aligned parallel to the sheet metal center portion 1 a of the sheet 1. The first edging, starting from the sheet metal center section 1a, takes place towards the outside 2. At a second edge 6 of the sheet metal 1, three edgings are formed, of which the first edging is deflected in the direction of the outside 2 starting from the sheet metal middle section 1a and the two further edgings take place in the opposite direction to the first edging of the second edge 6.

With this sheet 1 according to FIG. 1 can be produced a roof skin or wall cladding, in which the sheets are 1,1 'according to FIG. 2 or FIG. 3 connected to each other. The second plate 1 'is in the following FIGS. 2 to 4 always identical to the sheet metal 1, wherein like parts are supplemented with the same reference numerals by "'" are marked. In FIG. 2 a first edge 5 of a first sheet 1 is applied to a second edge 6 of a second sheet 1 ', wherein the bent sheet metal sections 1b', 1c ', 1d, 1e, 1f abut each other with their coated inner sides 3 formed as abutment surfaces. Between the folded sheet metal sections 1b ', 1c', 1d, 1e, 1f of the edges 5 ', 6, a connector 7 is inserted, which consists of an elongated as well as the sheets 1 folded metal strip. This connector 7 is connected via fastening means 8 to a substructure 9 of the roof cladding or wall cladding. A weatherproof connection between the sheets 1 takes place by the edge-side sheet metal portion 1f of the second edge is bent again by 90 °, so that the two outer sheet metal portions 1e, 1f of the second edge 6 are arranged parallel to each other and each with its inside to the outer Sheet metal section 1b 'of the first edge 5', this surrounding, rest. The connector 7 is clamped at least in a partial area between the sheets 1,1 '.

According to FIG. 3 In addition, the mean edging of the second edge is again bent by 90 °, so that all bent sheet metal sections 1b ', 1c', 1d, 1e, 1f parallel are arranged to each other. Otherwise points FIG. 3 no differences too Figur2 on.

In FIG. 4 are two sheets 1, 1 'interconnected, each one according to the first edge 5 in FIG. 1 edged edge 5, 5 'and are connected to each other by means of a deferred bar 10, wherein edge portions 10', 10 'of the bar 10 are deflected by 180 ° and with the outermost sheet portions 1b, 1b' of the edges 5, 5 'of the sheets 1, 1 'are compressed.

According to FIG. 5 an alternative roof skin or wall cladding is shown, wherein the sheets 1, 1 'each have a trapezoidal folded and the trapezoidal portions 11 of a sheet 1 are brought into contact with the respective adjacent trapezoidal regions 11' of another sheet 1 '. In contrast to the aforementioned embodiments, in each case the coated inner side 3 lies on an outer side 2 of the respectively adjacent metal sheet 1 '.

All the features mentioned in the preceding description and in the claims can be combined in any selection with the features of the independent claim. The disclosure of the invention is thus not limited to the described or claimed combinations of features, but all meaningful combinations of features within the scope of the invention are to be regarded as disclosed.

As already stated, the subject of the invention is not only a folded or provided for edging sheet, but also a roll-formed sheet, z. B such a sheet, which is used as the end product z. B. forms a gutter or a wavy profile in cross section and which is then equipped on the upper side with the coating.

As far as the coated sheets are joined together - such. B. after FIG. 2 . 3 . 4 or 5 Under some circumstances, it is also advantageous to provide the coating in the region, at least where the metal sheets which come into contact with one another or touch each other or over the entire surface, with a lubricating varnish, which preferably has a layer thickness of approximately 2-15 μm having. This bonded coating then has the advantage that the connection standing sheets can be easily processed in machines, eg. B also in a rollformer because the lubricating varnish makes the important pages less dull. As an anti-friction coating is known sliding paint in question, for example, a molybdenum-based glide or other known bonded coatings, which reduce or minimize the friction on surfaces, and can also ensure that under circumstances may reduce movement of other rubbing surfaces audible creaking or be eliminated.

Claims (20)

Edged or edged or roll-formed sheet metal (1, 1 ') of a roof skin or a wall cladding, or gutter or the like with an outer side (2) and an inner side (3), wherein bent at the edges sheet metal sections (1b, 1b', 1c , 1c ', 1d, 1e, 1f) of the sheet metal (1, 1') has at least one coating (4, 4 '), and
the coating (4, 4 ') is formed on the entire surface or part of the surface on the - inside (3) - of the sheet metal (1, 1'),
the coating (4, 4 ') has permanently elastic properties, and
the coating (4, 4 ') comprises at least one rubber-containing material or the like, e.g. As EPDM, TPO, etc. has. Sheet metal according to claim 1, characterized in that the coating consists of the rubber-containing material or EPDM, TPO or the like. Sheet according to claim 1 or 2, characterized in that the rubber-containing material is cellular rubber or silicone rubber or a mixture of silicone rubber and cellular rubber. Sheet according to one of claims 1 or 3, characterized in that the coating (4, 4 ') is foamed onto the inside (3). Sheet according to one of claims 1 to 4, characterized in that the coating is applied by vulcanization on the inside. Sheet according to one of claims 1 to 5, characterized in that the coating (4, 4 ') has a thickness of 0.1 mm to 0.8 mm, preferably at least 0.2 mm. Sheet according to one of claims 1 to 6, characterized in that the coating (4, 4 ') has a thickness between 0.2 mm and 0.6 mm. Sheet according to one of claims 1 to 7, characterized in that the coating (4, 4 ') has a thickness between 0.15 mm and 0.6 mm, preferably about 0.2 mm to 0.3 mm. Sheet according to one of claims 1 to 8, characterized in that the edging is provided at the edge on two opposite sides of the sheet (1, 1 '). Sheet metal according to one of claims 1 to 9, characterized in that at a first edge (5, 5 ') two edgings are formed in a predetermined, same direction or are provided wherein the first edging to the outside (2) of the sheet metal (1, 1 ') takes place. Sheet metal according to one of claims 1 to 10, characterized in that three edgings are formed or provided on a second edge (6), the first edging proceeding from a sheet metal center section (1a) towards the outside (2) and that of the sheet metal center section (1a) more distant edgings take place in the opposite direction to the first edging. Sheet metal according to one of claims 1 to 11, characterized in that edged or bevelled sheet metal sections (1b, 1b ', 1c, 1c', 1d, 1e, 1f) form contact surfaces on the coated inner side (2). Sheet metal according to claim 12, characterized in that the abutment surfaces of the first edge (5, 5 ') are each intended to rest against contact surfaces of the second edge (6). Sheet metal according to one of claims 1 to 13, characterized in that a standing seam can be formed between the sheet metal sections (1b, 1b ', 1c, 1d, 1e, 1f) bent over at the edges between two sheets (1, 1') to be joined together. Sheet according to one of claims 1 to 14, characterized in that with the beveled at the edges sheet metal sections (1b, 1b ', 1c, 1c', 1d, 1e, 1f) between two sheets to be joined together (1, 1 ') a Doppelstehfalz can be formed. Composite of sheets (1, 1 ') forming a roof cladding or wall cladding, characterized
in that the roof cladding or wall cladding is formed from folded or edged sheets (1, 1 ') according to one of claims 1 to 15. Composite according to claim 16, characterized in that the sheets (1, 1 ') are connected to each other via standing seams or Doppelstehfalze. Composite according to one of claims 16 or 17, characterized in that in the standing seams or Doppelstehfalze connectors (7) are clamped, with which the roof cladding or wall cladding to a substructure (9) can be fastened. Sheet metal or a composite of sheets according to one of the preceding claims, characterized in that the sheet or the sheets is formed at least in the areas in which the sheet metal sections contact with a lubricating varnish on the coating. Sheet metal or a composite of sheets according to one of the preceding claims, characterized in that at a partial coating at least 50%, preferably about 80% of the surface of the sheet of the coating is formed, the coating preferably in the manner of mutually parallel stripes or themselves is formed crossing stripes.

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