DE1619291A1 - Roof sealing membrane impregnated in a known manner and preferably provided with cover layers - Google Patents

Description

PATENTANVVÄl

DIPL.-ING, FRITZ THlELEKE DR.4NG, RUDOLF DÖRINQ Ditüunw ...,. FRlCK

BRAUNSOHWEiG - monks

- 1-619.29t "

F. Schacht Konmianditgesellschaft, Srauiischweig. ■

Bültenweg 48 _;

^{"Roofing membrane 11} impregnated in known catfish and preferably provided with cover layers _:

It is known to provide roofing membranes with cover layers, where under the designation deck sheets th · bitumen »- or tar-. layers are understood to be on both sides of the web, if necessary. in different layer thicknesses.

In the case of the known roof waterproofing membranes with cover layers, the membrane must be prevented from sticking together during manufacture, "especially when rolling up, and when the cover layer is in use at higher outside temperatures, for example in strong sunlight Sand, slate, mica or other inorganic comminuted material was provided, which was often used to color the surface of the web by adding dyes. The endeavor not only prevents the web from sticking and the surface layer from flowing off, but also fulfills the task of To protect web resistant to atmospheric influences, in particular sawing rain, sun and wind: to prevent emaciation *

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Because the liability of the sprinkling over a long period of time is generally not sufficient, such sprinkled strips must be marked with a-n after a certain period of use preservative coating, which can also be provided as a paint coating ..

In order to eliminate the described disadvantages of the sprinkling, which is still predominantly used today, it has become known that Impregnated, colored roofing membrane on their surface with a layer of paint applied to the top layer to provide and to apply a transparent or translucent crystal clear plastic film to this layer of paint. This measure is relatively expensive, as a top layer and then a paint application as well as on the normally impregnated roofing felt the plastic film must be applied or when using a colored cover layer this is to be covered by a plastic film. The application of the plastic film requires one additional work step and brings with it considerable production difficulties, since the plastic film on the entire surface of the must be firmly glued to the surface. Glues are required for this, which despite the weather influences after the laying of the j .hn guarantee the adhesion of the plastic film to the web. The side edges of the web are particularly at risk, da.dcrt moisture can penetrate between the layers, which leads to a progressive detachment of the plastic film from the web and thus a drainage of the top layer when exposed to sunlight enables. In addition, as is well known, a plastic film is relatively sensitive to mechanical damage.

BATH

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statements that, for example, "when walking," one with such Salt pans covered roof, onavoidable.

The known plastic film provided with at its top "of roof sealing strips as they are described for example in patent 1,147,911 could not in practice in the expected JJmfang for the above _reasons: to introduce.

The object of the invention is to create a waterproofing membrane, in which the disadvantages of the known webs provided with sprinkling or plastic film are avoided and in the simpler Manufacture to manufacture with significantly lower weight than before wherein the web can have any desired surface shade.

To solve the above problem, the invention provides that at of the roofing membrane mentioned in the introduction is that in the installed state naöli suiin knowing "Since © dta? Bato with tisör dii Austafläslie digge Plasticizer-free plastic or synthetic resin dispersion layer forming the web side, preferably in the form of a dispersion paint application, is provided. The train can with all currently known Inlays, such as raw felt cardboard, glass fleece, jute and metal foils, " be equipped.

Through the closed plastic or synthetic resin dispersion layer the railway receives a weather protection, that of the usual ■ sprinkling. is superior because it has a high resistance to aging and a has a high density and when formed as a parb film the bitumen

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"or tar top layer of the waterproofing membrane against the direct effects protects from the elements and ultraviolet rays. In this way, the premature embrittlement of the roofing membrane is avoided prevented and achieved a long durability of the color appearance when applying a dispersion paint application.

It is important that the plastic or synthetic resin dispersion layer is plasticizer-free, since this causes the plasticizer to migrate into the bituminous substrate and thus a disadvantageous one Changes to the bitumen or tar top layer are prevented. Sufficient flexibility and good adhesiveness of the art '. Experience shows that a material or synthetic resin dispersion layer can be used without further ado.

The plastic "or synthetic resin dispersion layer can also be applied to the only impregnated roof sealing membrane, i.e. applied without a top layer be, so that there is a significant weight saving of the Sealing membrane without accepting major disadvantages results.

According to a further feature of the invention, you can both after on the outside as well as the side of the web facing the base each provided with a plastic or synthetic resin dispersion layer, so that the otherwise necessary sprinkling of the lower top layer can also be omitted.

Used when coating on both sides with a plastic or synthetic resin dispersion on the application of the tar or bitumen top layers If it is completely dispensed with, one obtains a thin one, over time in its Resistance to webs provided with deodorant layers.

BADORiGWAL

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ringer resilient design, but a very significant weight saving with. brings itself.

The practical implementation of the new geomembrane has shown that that the web suitably with a dispersion layer on the Based on polyvinyl propionate, polyvinyl acetate or acrylic or Polystyrene-butadiene or iblyacrylic and methacrylic acid derivatives or Polyurethane with sodium hexametaphosphate and PCP-Na as wetting and preservative agents and optionally with color pigments, such as Ci | romoxydgründ or husk oxide red. By the latter two Color pigments will make a green or red-looking waterproofing membrane created. Instead of these color pigments, correspondingly different pigments can be used for other color combinations.

In addition to the basic components mentioned, the coating also has various fillers and thickeners as well as a predetermined proportion of water. Practice has shown that such dispersions, if the amounts of the individual components are adjusted appropriately, lead to the required properties such as flexibility, adhesiveness and weather resistance, as well as lightfastness.

For the production of the Dachdiohtungsbahnen according to the invention. a Method provided, which is characterized in that on the Sealing membrane after impregnation of the insert and, if necessary. after this Applying the top layer or top layers and sprinkling the underside the plastic or synthetic resin dispersion layer in a coloring application zone, preferably in the form of an application of emulsion paint, sprayed on, rolled on, brushed on or knife-coated and

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the track then with warm air and then with cold air handles wifcd. .

Usually the production is done in such a way that the web "at Application of a lower and upper top layer first with the The lower cover layer and the associated sprinkling is provided before the upper cover layer is applied and cooled and subsequently is provided with the dispersion paint before the action of the warm air and the subsequent cooling is carried out.

In the case of sheets without a top layer, the paint is applied immediately on the underside of the impregnated insert with the top layer and the sprinkling.

According to another feature of the new process, the web will be in front the application of the plastic or synthetic resin dispersion layer the side to be provided with this layer is previously sprayed with preferably relaxed water. This treatment with spray Water has the advantage that the dispersion layer adheres very intensively is reached on the web, even with strong bending stress the train and.in longer use and changing Weather conditions are preserved over very long periods of time.

If you do not want to sprinkle the track completely, so is provided that the web is initially provided with a cover, plastic or synthetic resin dispersion layer on only one side and then

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following by appropriate treatment, the other side is also coated there in the same Y / Eise, with if necessary. the application of a top layer can still be omitted. '■ ·. .

Devices for performing .the new method and for Production of the new roof waterproofing membranes are with Arrangement for applying the top layer and one of the winding, Equipped and marked for the cooling station upstream of the machine according to the invention in that the arrangement for the deek layer application an application device for the plastics or Resin dispersion layer downstream - is - to which a Drying "pass-through station, which is connected to a heating device is equipped. When producing -. 'Of tracks without The top layer on one side or the other is accordingly left out of the top layer application arrangement during manufacture Operation. However, one has in this embodiment described the device the possibility of both lanes with and without Manufacture top layers. - -.- ■ '. ., ■

Another feature of the new device is the drying pass-through station equipped with hot air nozzles and the downstream cooling station accordingly with cold air nozzles. It is true that ■ the effects of heat in the drying station are also shared with others Achieve means, just as cooling is also possible without the aid of cold air, but the arrangement of such hot air and cold air nozzles leads to a particularly simple one Structure of the device.

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To increase the adhesion of the dispersion layer on the web According to a further feature of the invention, it is recommended to arrange water spray nozzles directed at the web in front of the paint application device, through which the web is moistened with a fetter mist.

The drawing shows an example of a device for Implementation 'of the new method shown in FIG. 1 as well in Fig. 2 a schematic representation of the novel sealing membrane in partial section.

In the exemplary embodiment for the novel device according to FIG. 1 is the web 1, on the right side in the drawing over pulleys 2 and a covering compound made of tar or bitumen is applied to its upper side by means of an application device 5.

The lower cover layer is also applied to the web T via application and distribution rollers 4, 5 », which are arranged in a holding device 6, and the excess portion of the cover layer is retained by means of strippers 7. This stripped portion of the cover layer arrives in a storage container 8 for the cover mass, which is provided with a heating jacket 9 in order to keep the deodorant lake heated in the condition suitable for application.

Downstream of the application device is a cold air nozzle 10., which is directed to the top of the web 1 and if necessary. The top layer located there cools sufficiently so that it is at

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the subsequent deflection through 'the role 11, which in one

■ - ■ 'SS' ■ '■. ■ - ■■■ ■: ...- ■■■■ Γ; - :, ^: .. ".-.: ■■' - · ■■ Support frame + & held is not stuck on the roll.

Hach the deflection performed by the roller 11, the web forth under a Bestreuungsbehärter 12 with a metering device, so that the underside of the required, ■ -Iestreuung: -erhält, '''■■;■.' ■ '■' ■. ■ '..

Below the Beh'älters 12 or the deflection pulley * 1i is a drip pan 44 _t · arranged for the excess Bestreuungsgut which does not adhere to the pelvic layer during the further movement of the web. 1 ; -

In the further course of its movement, the web 1 is deflected upwards by means of the roller 14 and there arrives at a further deflection roller Ϊ5. In the area of the roller 15 there is arranged a spray device 16, indicated only schematically, by means of which the upper side of the web is wetted with a water mist. At the turning roller 15, the web passes under a paint applicator 17, which is either provided with a squeegee 18 or a spray nozzle not shown in the drawing. The .Serbauftr ^ device takes up a corresponding supply of plastics or synthetic resin · »: dispersion paint and is arranged above a collecting container 19, which takes up the excess amount when the dispersion layer is applied, which is returned to the application via a conveying device (not shown)? can be traced back.

The web provided with the dispersion layer on top now passes over further guide rollers 20, 21 under one

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their top directed hot air nozzle 22 and from here over Guiding rollers 23, 24 in a hanger 25 in which they are meandering Forms loops and in which it is exposed to the hot air from nozzles 26, 27. '

After the exit of the path -1 from the hanger 25, it is again guided under a cold air nozzle 28 and in the direction of the arrow 29 of a winding machine not shown in the drawing forwarded. ■

From the Pig. 1 it can be seen that the device can be produced both for the production of waterproofing membranes with a double-sided or single-sided cover layer and without a cover layer with a dispersion layer arranged on the top, if the corresponding application devices for the cover layer are left out of operation and, if there is no cover layer, also the sprinkling the bottom by stopping the metering device 13 does not take place. ·

Should the web be provided with a dispersion layer on both sides are, 'so only the par bauf.fangbehält it 19 by a to replace the corresponding order facility and a free one The web is then guided up to the guide rollers 23, 24 Required if the membrane has been exposed to hot air from both sides in the meantime. The subsequent warm air treatment in the hanger 25 and the application of cold air can in the provided way if necessary. through the additional arrangement of corresponding hot air and cold air nozzles to act on the

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Subpage in the form described »-" "

When the lower and upper cover layers are applied, a Web which, in section, has the stratification shown in FIG.

we is. . . - ■ '..-: ".

In uVr Fig. 2, the impregnated insert is designated by 30 "which on the -Unters e it e with a top layer 31 made of bitumen or the like. as well as a sprinkling 32 "is provided.;

The top of the web has a cover layer 33, which in turn through the plastic dispersion or synthetic resin dispersion layer 34 is covered. . ·.

By correspondingly small dimensioning of the Peckschiehten · 31, 33 or by completely omitting a top layer, an essential Weight saving of the sealing membrane can be achieved without this being disadvantageous compared to the known membranes with regard to the mechanical strength must be taken into account.

Claims (9)

Claims 1 Rl Q9Q-I 1. Oj; od-Afe3 ^ a * tg-ßweise impregnated roofing membrane with cover layers in a known manner, characterized in that the side of the membrane facing outwards in the installed state is covered with a plasticizer-free plastic or synthetic resin dispersion layer forming the outer surface of this side of the membrane ( 34), vo -sw & L & e. in the form of an application of dispersion paint ... '' 2. Roof sealing membrane according to claim 1, characterized in that that the outward and also the side of the web facing the base each with a plastic or Synthetic resin dispersion layer are provided. 3 «roof sealing membrane according to claim 1 or 2, thereby g e ken η shows that the web looks with a dispersion on the bastion of. iölyvinylpropionat, Polyvinyllaoetat or acrylate or polystyrene butadiene or polyacrylic and methacrylic acid derivatives or polyurethane with Na hexametaphosphate and PCP-Na al3 wetting agents and preservatives as well as colored pigments such as chromium oxide green or iron oxide red. 4. A method for producing roof sealing sheets according to one or more of the preceding claims. through this characterized in that on the web after impregnation the deposit and, if applicable. Application of the top coats and Sprinkle the underside in a "paint application zone the plastic or Synthetic resin dispersion layer, preferably in the form of a BAD ORIGINAL _ / -] 3 i 10982.3 / 173V _COpY Dispersion paint sprayed on, rolled on, painted on or unrolled and the web then with warm air and then is treated with cold air. 5 · The method according to the preceding claim, characterized in that g e k e η η ζ eic h η e t that the web before the application of the Plastic or synthetic resin dispersion layer is sprayed on the side to be coated with preferably relaxed water. 6>. Method according to one or both of the preceding claims, characterized in that the path initially only on one side with a cover, synthetic or synthetic resin dispersion layer provided and then coated there in the same way by appropriate treatment of the other side. 7. The device according to one or more of claims 4 to 6 with an arrangement for applying the top layer and a cooling station upstream of the winding machine, d a du r c h g e - ■ Ic e η η ζ eic h. net that the arrangement for the top layer application (1 to 9) has an application device for the plastics or synthetic resin dispersion layer (17, 18, 19). is downstream, to which a TroOknungs ^ DurchlRufstation (25) is attached, which is equipped with a heating device. 8. Apparatus according to claim 7 »d a d ure h ge k e η η ζ e i c h.n e t that the drying Durohiaufstation (25) with hot air nozzles (26, 27) and the next-level cooling station BAD .ORIGINAL 10982 ^ / 1734 _copy is equipped with cold air nozzles (28). 9. Device according to one of the preceding claims 7 or 8, characterized in that facing the web in front of the paint application device (17, 18, 19) Water spray nozzles (16) are arranged. BAD OBiOlNAL 109823/1734