EP1230303A1

EP1230303A1 - Ribbed strip for roofs or similar

Info

Publication number: EP1230303A1
Application number: EP99974190A
Authority: EP
Inventors: Dieter Hailer; Andreas HÖRNIG
Original assignee: Dr Kohl & Cie Dachbelag- und Bautenschutzmittel-Fabrik GmbH
Current assignee: M&A MASCHINEN- UND ANLAGENBAU ERBACH GMBH
Priority date: 1999-11-18
Filing date: 1999-11-18
Publication date: 2002-08-14
Also published as: WO2001036538A1

Abstract

The invention relates to a ribbed strip for roofs or similar, which comprises an upper- (3) and a lower-surface layer (4), on the underside of which ribs (5) are formed. Said ribbed strip (1) comprises ribs (5), which are made from a plastomer bitumen containing a filler, on the underside of the lower layer, which form continuous cavities between the ribbed strip (1) and the roof or similar to be sealed; said cavities provide universal vapour pressure equalization. The aim of the invention is to improve this conventional ribbed strip and to simplify the handling thereof, which is achieved, whereby the ribbed strip is characterized in that the installation thereof is performed in a single layer and the cold malleability is guaranteed down to a temperature of -15 deg. C, by the ribbed strip.

Description

, Stollenbahn for roofers or the like. "

The invention relates to a Stollenbahr for roofs or the like., With an upper and a lower Dec <schιcht, on the underside cleats are formed which z _schen the gallery and the roof to be sealed or the like. e_n an all-round vapor pressure equalizing system serving context forming cavity form and the L-ausgeo gymnastics of a _^ e with NEM F llstoff staflilisierten Plastomero oet _SL.

In known tunnel lanes of this type, it sets a polymer component of the plastic bitumen stabilized with the filler from a comparatively hard APP polymer with a penetration of 15/10 mm to 25/10 mm unα, to stiffen the mass, from an IPP polymer together. The total polymer content of the filler stabilized P_astomerbιtum is chosen low according to the recipe known for two-layer laying tunnel lanes. F _^ a correspondingly designed lower deck not of a tunnel run can guarantee the desired cold-drying curing up to z _^ a temperature of -8 degrees C, thereby only fulfilling the DIN 52131/52130. The further DIN 52133/52132, which applies to polymer bitumen welding sheets, and JO_S at a temperature of -15 degrees C the desired cold bending behavior or the EPTA guideline for single-layer installation, which requires the desired cold bending behavior up to a temperature of -20 degrees C, cannot be met. The lower cover layer of the gallery, designed in a known manner, has a penetration at 25 degrees C of 40/10 mm as a measure of the strength of the galleries at room temperature; the penetration as a measure of the strength of the tunnels at elevated temperature, for example due to strong sunlight on a roof, is 199/10 mm at 60 degrees C.

The invention has for its object the Stollenoahn for roofers or the like described at the outset. to be further developed such that, on the one hand, the cold bending behavior and, on the other hand, the heat resistance of the studs on the underside of the lower cover layer are considerably improved.

D ± ese Aufgaoe Stollen lane can be laid in one layer and has the required cold-curing to a temperature of -15 degrees C, with an additional increase in the polymer content of the filler-stabilized plastomer bitumen of the lower cover layer. This enables DIN 52133/52132 to be met for polymer bitumen welding sheets.

The tunnel web according to the invention preferably fulfills the required cold bending processing up to a temperature of -18 degrees C.

The further EPTA guideline for single-layer laying

Tunnel lanes are achieved when the tunnel lane according to the invention can be cold-bent to a level of one Has temperature of -20 degrees C, preferably striving to ensure the required cold bending behavior down to a temperature of -22 degrees C.

According to an advantageous embodiment of the tunnel web according to the invention, the galleries have a penetration <150/10 mm, preferably from 115/10 to 125/10 mm, on the underside of the lower cover layer of the tunnel web at a temperature of 60 degrees C.

If the polymer component of the plastomer bitumen stabilized with the filler of the lower cover layer is a significantly softer main APP polymer with a penetration of 25/10 to 40/10 mm and a viscosity> 175,000 cps, a copolymer with a penetration of 20/10 up to 40/10 mm and a viscosity> 2,500 cps and for stiffening IPP polymer entnait, erg _^ sicn - depending on the total polymer age - De., the inventively designed lower cover layer a temperature of -18 to -27 degrees C, up to which the required cold bending behavior can be guaranteed. In any case, the cold bending behavior required in the context of DIN 52133/52132, which must be achieved for plastomer bitumen down to a temperature of -15 degrees C, is guaranteed in the case of the tunnel lane according to the invention, with the corresponding polymer content also the requirements according to EPTA guidelines -20

Degree C. The heat resistance of the tunnels is also increased; the penetration at 60 degrees C gives 115/10 to 125/10 mm in the case of the lower cover layer of the gallery in this way compared to 199/10 mm in the case of the gallery according to the prior art. A further advantage of the tunnel web designed according to the invention lies in the considerably reduced laying effort that can be achieved due to the single-layer laying thereof in comparison to the previously usual two-layer laying.

It has also been found to be advantageous if the copolymer of the polymer component of the filler-stabilized plastomer bitumen of the lower cover does not have a viscosity of up to 10,000 cps.

The polymer component of the filler-stabilized plastomer bitumen of the lower outer layer expediently makes up 27.5 to 32.5% by weight of the same.

Here, a combination has proven to be advantageous in which the soft main APP polymer 18.75 DIS 22.50% by weight, the copolymer 6.25 c _^ s 7.50 ew.-τ3 unα aas IPP polymer 2.50% by weight of the filler-stabilized plastomer bitumen of the lower cover layer. The technical values achieved result only to a small extent from the increase in the polymer content. State-of-the-art formulations with analog polymer contents of one grade - as already described at the beginning - bring about lower penetrations, but result in insufficient cold-bending behavior of the tunnel lanes.

If the upper cover layer of the tunnel web is formed from an elastomer bitumen stabilized with a filler, which contains a suitable SBS polymer as bitumen and distillation bitumen, as a polymer component, and the filler, the required cold bending properties can be required. guaranteed up to a temperature of up to -35 degrees C. However, the use of elastomer bitumen for the upper surface layer means that only comparatively lower heat resistance of up to 115 degrees C and a comparatively poor aging behavior can be accepted.

Accordingly, in the case of a specific requirement profile with regard to the tunnel web according to the invention, it can be advantageous if its upper cover layer, which is formed from a plastomer bitumen stabilized with filler and which contains a bitumen as distillation, a polymer component and the filler, contains the polymer component αes with the filler stabilized plastomer bitumen of the upper cover layer soft main APP polymer with a penetration of 25/10 to 40/10 mm and a viscosity> 175,000 cps, high molecular CO-APP polymer with a penetration of 30/10 to 60/10 mm and a viscosity> 200,000 cps and contains IPP polymer for stiffening. In a corresponding embodiment, a cold bending behavior is guaranteed up to a temperature of up to -27 to -30 degrees C, a penetration at 25 degrees C from 49/10 to 46/10 mm and a penetration at 60 degrees C of 225 / 10 to 223/10 mm. Compared to the prior art, the combined use of the soft main APP polymer with the very high molecular second polymer for the polymer component of the plastic-stabilized plastomer bitumen results in significantly improved cold bending behavior, which is an essential property for the upper cover layer of a gallery is. The resistance to aging of the appropriately designed upper cover layer of the tunnel web according to the invention is also excellent. The penetration, ie the heat resistance of the mixture, which has no or no significant significance with regard to the upper cover layer of the Stollenoahn according to the invention. tung, is located in the upper cladding layer as described vorstehenα designed in the range known in the prior art upper cover layer ^n.

The polymer constituent of the plastomer bitumen of the upper cover layer stabilized with the filler expediently makes up 27.0 to 33.0% by weight, 20.0 to 24.5% by weight advantageously being based on the soft main APP polymer, on the high molecular CO-APP-polymer 6.0 to 7.5 wt .-% and aas IPP polymer 1.0 wt .-% of stabilized with the Fu__stoff Plastomerbitumens αer upper deck Chic ^h t omitted.

Provided that a colorable fleece lamination is provided on the top of the top cover layer, the aesthetic requirements of the top cover layer can be met. If the upper cover layer is made of elastomer bitumen _st, ..st e_ne αerart_ι_ge .__. Es_cascn_er.-ng aαc absolutely necessary due to UV aging.

Med-weight PP nonwovens can advantageously be used as fleece lamination. The colorable nonwoven lamination, which is advantageously made from low-weight PP nonwovens, does not impair the cold bending behavior of the tunnel web.

If, for other reasons, e.g. because of the greater durability of the visual and aesthetic impression of the upper side of the tunnel web, the upper cover layer is provided with screen chippings as surface protection, it is possible that the cold bending behavior of the tunnel web according to the invention can only be reliably guaranteed up to a temperature which 5 to 7 degrees C lower than usual; even then however, the provisions according to the aforementioned DIN standards and the EPTA guidelines are still met.

A support bracket is advantageously arranged between the upper and lower deck slides, which is formed from a combination fabric made of polyester and glass according to one embodiment of the tunnel web according to the invention and according to a further embodiment of the tunnel web according to the invention from a combination carrier with polyester fleece, glass fleece and optionally Glass-polyester fabric is formed. In this way, sufficient dimensional stability of the tunnel train according to the invention is ensured in each case.

In the case of the tunnel web designed in accordance with the invention, a long overlap of 8 cm of the side-by-side tunnel webs is completely sufficient, since mechanical fastening elements, as are otherwise customary for Dacnoahner laid by emιlag ___ g, are not required. The welding of the studs on the surface below, by means of which approx. 30% of the lower surface of the lower cover layer acts as a welding surface, results in better resistance to wind suction than mechanically fastened stud tracks.

The invention is explained in more detail below with reference to an exemplary embodiment with reference to the drawing, which in principle contains the essential components of a tunnel run for roofers and the like which are essential with respect to the present invention. are shown.

A m of the single figure shown with regard to its elements 1 essential to the invention has an upper cover layer 3 and a lower cover layer 4.

For reasons of stability, a carrier insert 2 is embedded between the two cover layers 3, 4.

As a carrier layer 2, a combination fabric made of polyester and glass or a combination carrier with polyester fleece, glass fleece and optionally glass-polyester scrims is preferably used. This configuration of the carrier insert 2 ensures sufficient dimensional stability. The dimensional stability achieved in this way is sufficient to meet a non-mandatory manufacturer's guideline for single-layer polymer bitumen carrier seals, which is particularly interesting for mechanically fastened roofing membranes, although in the case of the tunnel membrane according to the invention, this is due to the welding between the underside of the tunnel membrane 1 and the membrane Dac.i or the like would not be required.

In the case of the tunnel web 1 according to the invention, a separate mechanical fastening of the tunnel web 1 on the surface to be sealed, which is otherwise customary for single-layer systems, is of course dispensed with due to the partial welding of the lower cover layer 4 to the surface to be sealed. The welding, which takes place on approximately 30% of the contact area between the lower cover layer 4 and the area to be sealed, leads to a high wind suction resistance; Instead of a long overlap of 13 cm, which would be necessary for mechanical fastening, a long overlap of only 8 cm can be selected in the case of the tunnel track 1 according to the invention. The carrier insert 2 is soaked with a mass of plastomer bitumen. This drinking step is carried out before the carrier layer 2 is provided with the top 3 and bottom cover layer 4.

On its underside, the lower cover layer 4 has projections m in the form of downwardly projecting studs 5 or the like with their free end faces on the roof (not shown). rest and be glued or welded to it by flaming. The spaces between the tunnels 5 or the like form after the installation of the tunnel bier 1 on the roof. a coherent cavity system between the gallery 1 and the roof to be sealed or the like. out. This cavity system is used to permanently compensate for vapor pressure caused by trapped moisture.

The lower cover layer 4n of the 3to__enoann 1 according to the invention is formed from a plastomer bitumen stabilized with a filler. The plastomer bitumen contains as bitumen a distillation bitumen, the filler and a "polymer component, which in turn is made of a soft main APP polymer with a penetration of 25/10 to 40/10 mm and a viscosity> 175,000 cps, from a copolymer with a Penetration from 20/10 to 40/10 mm and a viscosity> 2,500 cps and composed of an IPP polymer suitable for stiffening

The viscosity of the copolymer in the illustrated embodiment of the tunnel lane 1 is between 2,500 and 10,000 cps. The polymer component of the plastomer bitumen of the lower cover layer 4 stabilized with the filler makes up between 27.5 and 32.5% by weight of the same. Here, 18.75 to 22.50% by weight are accounted for by the soft main APP polymer, 6.25 to 7.50% by weight on the copolymer and 2.50% by weight on the IPP polymer. As a result of the comparatively high polymer content of the plastomer bitumen of the lower cover layer 4 stabilized with filler and because of the properties of the soft main APP polymer used and of the copolymer also used, there are considerable improvements in the tunnel spell 1 according to the invention and in the lower cover layer 4 thereof the cold bending behavior and with regard to the stud strength. The desired cold bending behavior of the tunnel web 1 according to the invention can be ensured up to temperatures of -18 to -27 degrees C; the lower cover layer 4 of the tunnel web 1 designed according to the invention has a penetration between 34/10 and 40/10 mm at a temperature of 25 degrees C and a penetration of 115/10 to 125/10 i at a temperature of 60 degrees C. The above-described configuration of the lower cover layer 4 of the tunnel sheet 1 according to the invention accordingly improves both the cold bending behavior of the lower cover layer 4 and the heat resistance of the tunnels 5 provided on the underside of the lower cover layer 4.

According to a first embodiment, the upper cover layer 3 of the Stollenba 1 according to the invention is likewise formed from a plastomer bitumen stabilized with filler. As bitumen, the plastomer bitumen contains a distillation oil, furthermore the filler and a polymer component, which in turn is derived from that already in connection with αer _ ii

bottom top layer 4 described main APP polymer with a penetration of 25/10 to 40/10 mm and a viscosity> 175,000 cps, from a high molecular weight CO-APP polymer with a penetration of 30/10 to 60/10 mm and one Viscosity> 200,000 cps and is composed of the stiffening IPP polymer.

The polymer component of the plas omerbitumens of the upper cover layer 3 is 27.0 to 33.0% by weight of the same. Of these, the soft main APP polymer makes up 20.0 to 24.5% by weight, the high molecular weight CO-APP polymer 6.0 to 7.5% by weight. and the IPP polymer is 1.0% by weight. The upper cover layer 3 of the tunnel web according to the invention produced in accordance with the above explanations ensures the desired cold bending behavior up to a temperature of -27 to -30 degrees C, these values being able to be achieved in the unscattered state of the upper cover rail 3. In the case of sprinkling or similar measures, the cold bending behavior required by the EPTA guidelines can be achieved down to a temperature of -20 degrees Celsius. The penetration of the upper cover layer 3 is 49/10 to 46/10 mm at 25 degrees C and 225/10 to 223/10 mm at a temperature of 60 degrees C. In any case, the cold bending behavior is considerably improved in the upper cover layer 3 of the tunnel web 1 according to the invention composed as described above.

If further improved cold bending properties of the top cover layer 3 of the tunnel web 1 according to the invention are desired, it is possible, according to an alternative embodiment of the tunnel web 1 according to the invention, to form the top cover layer 3 from an elastomer bitumen stabilized with filler, a bitumen then being a distillation bitumen, as a polymer component a suitable SBS polymer and the filler form the elastomer bitumen. As a result, the desired cold bending properties down to a temperature of down to -35 degrees C can also be achieved in the form of the upper cover layer 3 of the tunnel web 1. However, there are impairments with regard to the heat resistance and the aging behavior.

If the top cover layer 3 of the Jen Stollen 1m according to the invention is realized in the first described embodiment, surface protection is not necessary due to the UV stability of the top cover layer 3 which is guaranteed in any case. However, customers sometimes want it for aesthetic and optical reasons. In the case of the design of the upper cover layer 3 with the elastomer bitumen stabilized with the filler, surface protection is necessary due to the UV aging zwmgenα.

In the case of the embodiment shown in the single figure, a fleece lamination 6 is provided as surface protection, which can be produced from the desired embossed nonwovens. The fleece lamination 6 m of the above-mentioned configuration does not impair the cold bending behavior of the tunnel web 1. Low-weight PP nonwovens can be used as nonwovens.

The also possible configuration of the surface use of the tunnel lane 1 according to the invention by means of slate chippings applied reduces the temperature up to which the desired cold bending behavior can be ensured by approximately 5 to 7 degrees C, since the slab chip material has a pre-notching effect. Regarding the durability of the However, with the surface protection also aimed for aesthetic-optical effect, the design of the surface protection by means of slate chippings offers some advantages.

Claims

PATENT CLAIMS

1. Stollenbahn for roofs or the like. With an upper (3) and a lower cover layer (4), on the underside of which tunnels (5) are formed, or the like between the tunnels (1) and the roof to be sealed , Form a coherent cavity system which serves to equalize the vapor pressure on all sides, and which is formed from a plastomer bitumen stabilized with a filler, characterized in that the tunnel web (1) can be laid in one layer and has the required cold bending behavior down to a temperature of -15 ° C.

2. Stollenbahn according to claim 1, which has the required cold bending behavior up to a temperature of -18 degrees C.

3. Stollenbahn according to claim 1 or 2, the required before cold bending behavior up to a temperature of -20

Degree C.

4. Stollenbahn according to claim 3, which has the required cold bending behavior up to a temperature of -22 degrees C.

5. Stollenbahn according to any one of claims 1 to 4, the cleats (5) on the underside of the lower cover layer (4) of the cleat track (1) at a temperature of 60 degrees C, a penetration <150/10 mm, preferably 115/10 up to 125/10 mm.

6. Stollenbahn according to any one of claims 1 to 5, wherein a polymer component of the plastomer stabilized with the filler of the lower cover layer (4) is a soft main APP polymer with a penetration of 25/10 to 40/10 mm and a viscosity> 175,000 cps, a copolymer with a penetration of 20/10 to 40/10 mm and a viscosity> 2,500 cps and contains IPP polymer for stiffening.

7. Stollenbahn according to claim 6, wherein the copolymer of the polymer component e ne viscosity of up to 10,000 cps.

8. Stollenbahn according to claim 6 or 7, in which the polymer component makes up 27.5 to 32.5% by weight of the plastomer bitumen stabilized with the filler of the lower cover layer (4).

9. Stollenbahn according to claim 8, wherein the main soft APP polymer 18.75 to 22.50 wt .-%, the copolymer 6.25 to 7.50 wt .-% and the IPP polymer 2.50 wt .-% of the plastomer bitumen stabilized with the filler of the lower cover layer (4).

10. Stollenbahn according to any one of claims 6 to 9, wherein the upper cover layer (3) is formed from a stabilized with a filler elastomer bitumen containing bitumen as a distillation bitumen, as a polymer component, a suitable SBS polymer and the filler.

11. Stollenbahn for roofs or the like, with an upper cover layer (3) which consists of a filler rod. based plastomer bitumen is formed, and a lower cover layer (4), on the underside of which studs (5) are formed, or the like between the stud block (1) and the roof to be sealed. Form a coherent cavity system which serves to equalize the vapor pressure on all sides, preferably according to one of Claims 1 to 10, characterized in that a polymer component of the plastomer bitumen stabilized with the filler of the upper cover layer (3) is a soft main APP polymer with a penetration of 25/10 to 40/10 mm and a viscosity> 175,000 cps, high molecular CO-APP polymer with a penetration of 30/10 to 60/10 mm and a viscosity> 200,000 cps and contains IPP polymer for stiffening.

12. Stollen track according to claim 11, in which the polymer component makes up 27.0 to 33.0% by weight of the plastomer bitumen of the upper cover layer (3) stabilized with the filler.

13. Stollenbahn according to claim 10, wherein the soft main APP polymer 20.0 to 24.5 wt .-%, the high molecular weight CO-APP polymer 6.0 to 7.5 wt .-% and the IPP- Polymer accounts for 1.0% by weight of the plastomer serum stabilized with the filler of the upper cover layer (3).

14. Stollen track according to one of claims 1 to 13, in which an e-colorable fleece lamination (6) is provided on the upper side of the upper cover layer (4).

15. Stollenbahn according to claim 14, wherein the fleece lamination (6) is made of low-weight PP nonwovens.

16. Stollenbahn according to any one of claims 1 to 15, in which on the top of the upper cover layer (4) slate grit is provided as surface protection.

17. Stollenbahn according to any one of claims 1 to 16, in which between the upper (3) and the lower cover layer (4) a carrier insert (2) is arranged, which is formed from a combination fabric of polyester and glass.

18. Stollenbahn according to any one of claims 1 to 16, in which between the upper (3) and the lower cover layer (4) a carrier insert (2) is arranged, which is formed from a combination carrier with polyester fleece, glass fleece and optionally glass-polyester fabrics is.