DD158881A5 - BIEGSAMER, MULTILAYER BELAG FOR SEALING AND / OR SOUND INSULATION - Google Patents

Abstract

The covering, which consists of a bituminous sealing covering which is covered with a protective layer resistant to various atmospheric contaminants, is used, for example, for sealing roofs. The aim of the invention is a cheaper, easy-to-use coating. The object of the invention is to avoid interruptions and stresses on the wheels of the laid pavement paths, caused as a result of a "creeping" of the protective layer. According to the invention, this is achieved by the protective layer consisting essentially of a continuous, previously stabilized with respect to any contraction pulling plastic film. The stabilization is carried out by laminating with the aid of a Kelbstoffes, extruding, applying plastisols on the metal foil or any spraying method. The invention can be used in the manufacture of flexible, multi-layered liners for sealing and / or soundproofing, in particular of roof linings.

Description

97 69

Berlin, 14.8.1981 B 32 B / 229 769 59 066/26

Flexible, multi-layer covering for waterproofing and / or sound insulation

Field of application of the invention

The invention relates to a flexible, multi-layer covering for sealing and / or soundproofing with a bituminous non-porous coating coated with a weatherproof protective layer resistant to various atmospheric contaminants of chemical or biological origin. The atmospheric contaminants may include acids, bases, solvents and any precipitate be able to go down in the most general insight to a roof,

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Because of the various gaseous, liquid or solid emissions which are released into the atmosphere continuously or as a result of an accident, one encounters considerable problems everywhere with regard to the tightness of roofs,

Characteristic of the known technical solutions

The simple bitumen boards are heavily attacked by precipitates of aromatic or chlorinated solvents, which are produced in numerous industrial processes. The damaging attack takes place through progressive dissolution and decomposition of the bitumen. In addition, the oxidizing emissions (sulfur dioxide, various acids) lead to embrittlement of the bitumen, and therefore it is necessary to frequently renew the sealing of the respective roof surface. "

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The bituminous sealing foils coated with aluminum foil are also rapidly attacked by sulfur dioxide emissions as well as alkaline and acidic emissions.

Materials have already been proposed for the protection of the bituminous layer to ensure the continued existence of this protection in the case of corrosive attacks au, such as films made of stainless steel. However, stainless steel is very expensive and has a high rigidity.

There have also been proposed plastic be läge, however, are difficult to handle on the site. They include, among others, plasticizers which tend to migrate along the surface and form a sticky layer to which dust adheres.

Object of the invention

The aim of the invention is the development of a cheap, easy-to-use, corrosion-resistant, flexible, multilayer coating for sealing and / or sound insulation, especially of roofs.

Explanation of the essence of the invention

The technical problem to be solved by the invention is to provide discontinuities and interruptions and the risk of tensions at the edges of the laid tracks of the flexible, multi-layer covering for sealing and / or soundproofing with a bituminous sealing covering having

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a weatherproof, coated against various atmospheric impurities of chemical or biological origin resistant protective layer, caused by a "Kriechaffektes" of the protective layer to avoid.

The feature of the invention, by which the above technical problem is solved, is that in the flexible, multilayer Balag for sealing and / or sound insulation with a bituminous Abdichtbelag coated with a weatherproof, resistant to various atmospheric impurities chemical or biological origin protective layer is, the scum layer consists essentially of a continuous, previously with respect to Qedes possible contraction stabilized plastic film. *

Another feature of the invention is that the plastic film is stabilized on a metal foil as a support by a method selected roup from a ^G, the laminating using an adhesive, extruding that A _u ftragen of plastisols to the metal foil or each spraying method comprises _o Also therein is a feature of the invention that the metal foil of the carrier is an aluminum foil.

According to the invention, furthermore, that the composite complex of plastic film and carrier has an embossing.

Also to be regarded as an inventive feature is that the Kuaststoffolie consists of polyvinyl chloride. Another feature of the invention is that the plastic film has a thickness between 10 and 100 microns, preferably

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37.5 microns. The invention also includes the feature that the plastic film of the carrier has a thickness between 9 and 200 microns, preferably between 40 and 80 microns,

According to another feature of the invention, the plastic film is laminated on the metal foil of the carrier by means of a reactive adhesive.

Finally, a feature of the invention is that the bituminous Abdichtbeläg has on its underside a self-adhesive layer which is protected by an absiehbare layer,

embodiment

The invention will be explained in more detail with reference to an exemplary embodiment. In the drawing show:

1: section of a multilayer coating in perspective view,

2: ^B elag according to the invention, partly in section, in a perspective view,

3 shows another embodiment of the invention in a perspective view, partly in section,

Fig. 4: further embodiment according to the invention in a perspective sectional view.

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In Fig. 1 there is shown a composite complex of a plastic film 10 free of plasticizers and resistant to corrosive agents, and a bituminous sealing coating 12 forming a sheet or panel resistant to all types of external attack is, wherein the composite complex according to the conventional method is usable as roofing.

However, during manufacture, the plastic films 10 experience thermal shock and, as a result, tend to contract significantly as a result of a "creep" effect when performing the process. This results in discontinuities and interruptions in the protective layer and the risk of tensions at the edges of the laid tracks.

The plastic film 10 must therefore be stabilized according to the invention against this shrinkage, which arises with the implementation of the method.

One might consider stabilizing the plastic film 10 by adhering it to a rigid substrate, such as a glass fiber mat 14 or asbestos film shown in Figure 1, but there is a risk of incompatibility between the bituminous sealant 12 and the adhesive used for this process , In addition, there is still the risk of air pockets under the plastic film 10, which may result in blisters or bumps.

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According to the invention, the plastic film 10 is adhered to a continuous support 16 by means of an active adhesive, wherein the reactive adhesive must of course be fully compatible with the two elements of the lamination, that is with the plastic film 10 and the material of the carrier 16. The continuous carrier 16th prevents the direct contact between the adhesive and the bituminous sealant 12, and thus prevents the above-mentioned incompatibility phenomena.

In an advantageous and preferred manner, the carrier 16 of the lamination consists of a metal foil, which is shown in FIG. 2 and preferably consists of aluminum. It has a thickness of 9 Ό is 200 microns, preferably 20 to 80 microns.

A method for laminating the plastic film 10 on its carrier 16 can have the following method steps:

Coating the carrier 16 with a reactive adhesive dissolved in a solvent;

- evaporation of the solvent in an oven;

Applying the plastic film 10 by calendering at room temperature in order to prevent the plastic film 10 from deforming, the compound obtained being stronger than the self-cohesion of the plastic film 10,

All synthetic plastic films 10 made of thermoplastics or elastomers can be used for this process,

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provided they meet the requirements for protection against harmful atmospheric influences. Advantageously, a plastic film 10 of polyvinyl fluoride or polyvinyl chloride of small thickness, for example, a thickness between 10 and 100 microns, use. Advantageously else ^w, the plastic film 10 is an optimum thickness of 37.5 microns, you must deformable, resistant to atmospheric attacks, chemically inert and mass pigmented be without plasticizer.

Because of the technologies commonly used in the sealing technique, the composite complex thus formed is embossed (grouting) or, as shown in Fig. 3, bulged to reduce the areas of dilatation and contraction to elementary portions, prior to conventional Methods of Making Bitumen Covers Apply a Coating of a Reinforced or Non-Reinforced Bituminous Sealing Pad 12

The stability of this composite complex was experimentally confirmed on a coating prepared by this method by subjecting it to a thermal cycle, and it was found that after numerous phases neither elongation nor contraction of the composite complex took place,

The unit made in this way can be adhered to each support 16 with the aid of a bitumen bath suitable for receiving an insulating layer prepared in accordance with conventional methods. "

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In practice it is convenient to provide on the web of each web a region 18 as shown in Figure 2 which is not covered by the composite complex, plastic film 10 and substrate 16, and which is laterally overlapped by the respective adjacent web serves.

In order to prevent the bitumen used for bonding from smearing the composite complex of the adjacent webs, they are expediently painted over with soap water until they are bonded, so that the overflowed bitumen can be removed from the plastic film 10 without damaging it. The edges on the webs of the webs are either protected by a paint which is resistant to chemical attack and made, for example, from polyurethane, or they are protected by self-adhesive tapes of the complex described above or by any other suitable means.

In this way, as a composite complex, a covering for sealing and / or sound insulation is created with the following advantages:

The bituminous sealant 12 is protected against the various atmospheric attacks;

the protection is both durable and aesthetically appealing, incorporating itself into the architecture of the building and the landscape;

the process is simple and there is no risk of cracks or bumps forming holes;

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the composite complex can adapt to all dimensional changes of the supporting structure;

- The outer surface can be cleaned and is under the sole effect of Eegenwassers as it were self-cleaning;

the entire coating is refractory due to the metallic layer of the carrier 16, but if so desired one may use an inflammable plastic film 10,

The "Ve round complex, consisting of the bituminous Abdichtbelag 12 and composed of the plastic film 10 and the 'carrier complex can be coated on its underside with a thin or thick adhesive layer with or without Sinlage, the thickness between a few microns and some Millimeters, thereby permitting their use in areas where a flame could damage the plastic film 10 during performance of the process, even where one can not work with conventional molten bitumen techniques.

4, the adhesive substance is protected with a layer 20 of a crimped paper-polyethylene-silicone complex which can be stripped off the bituminous sealing coating 12.

The embossing or corrugation according to FIG. 3 provides the possibility of an extension without substantial tension, so that the covering can serve to bridge over hiss, fireplaces,

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Lining gutters, beams or other projections to create an aesthetically pleasing insulating layer without paint or other coating.

In addition, the covering according to the invention can be used as a soundproofing plate on machine parts or structural parts which are exposed to atmospheric attacks »

Without departing from the spirit of the invention, the composite complex of the plastic film 10 and its carrier 16 can be made by techniques equivalent to the lamination techniques. Thus, this composite complex can be prepared by extrusion, by brushing plastisols or any spraying methods before the polymerization on the metallic support 16, wherein the thickness of the resulting film film can be between 1 and 500 microns.

Claims (9)

Claim 1. Flexible, multi-layer covering for waterproofing and / or soundproofing with a bituminous Abdichtbelag, which is übersogen with a weatherproof, resistant to various atmospheric contaminants chemical or biological origin protective layer, characterized in that the protective layer consists essentially of a continuous, previously with respect Plastic film (10) stabilized for any contraction it. 2. The coating according to item 1, characterized in that the plastic film (10) on a metal foil as a support (16) is stabilized by a method which is selected from a group, the lamination with the aid of an adhesive, the extrusion, the application of plastisols on the metal foil or any spraying method. 3 · covering according to point 2, characterized in that the metal foil of the carrier (16) is an aluminum foil _o 4, covering according to one of the preceding points 2 and 3, »characterized in that the composite of plastic film (10) and carrier (16) has an embossing. 2297 69 2 -> ₂ - B 23 B / 229 769 59 066/26 5. covering according to one of the items 1 to 4, characterized in that the plastic film (10) consists of polyvinyl chloride. 6. covering according to one of the items 1 to 5, characterized in that the plastic film (10) has a thickness between 10 and 100 microns, preferably 37.5 microns. A covering according to any one of items 2 to 6, characterized in that the metal foil of the carrier (16) has a thickness of between 9 'and 200 micrometers, preferably between 40 and 80 micrometers, 8. covering according to one of the items 2 to 7, characterized in that the plastic film (10) on the metal foil of the carrier (16) is laminated by means of an eective adhesive. 9. covering according to one of the items 1 to 8, characterized in that the bituminous Abdichtbelag (12) on its underside has a self-adhesive layer which is protected by a peelable layer (20). See 1See drawings