DE19822876C2 - Insulation and waterproofing membrane - Google Patents

Description

The invention relates to an insulating and sealing membrane on a bitumen basis.

Bitumen sheets, especially made of polymer bitumen, have been around since Decades of state of the art and in particular become Sealing surfaces, roads, bridges and buildings everyone Kind used.

The sheets are usually laid overlapping and either welded hot together or cold welded together glued.

While large areas are problem-free with such bitumen sheets can be "glued" again and again Difficulty with sealing when out a flat body like supports, railings, chimneys or stick out. The bitumen sheet must then be open be cut or cut out. The connection area must be with separate strips of bitumen sheeting or with Liquid bitumen can be sealed.  

Experience has shown that this seal is common failed or over time the above Connection areas become leaky again.

It has therefore been proposed to seal in Connection area with highly elastic plastics, for accessories game based on polyester, polyurethane or epoxy resin to execute. In this way, improvements have been made visibly bridging any cracks, regarding water permeability, chemical resistance, Temperature resistance and shear resistance result.

However, the contact area remains as the "weak point" between the plastic coating and the bitumen membrane. This is especially true if the surfaces of the Bitumen sheet with a granular coating, for example Sand, grit or coated with laminating foils are.

DE 90 02 221 U1 describes a bituminous welding track known in which the to be welded to a surface lower surface with a thin fleece made of plastic fibers is covered. The fleece is to the bottom of the Welded so glued that it is not from the bituminous Sweat is soaked. Regarding liability versus plastic systems on the top surface are given, the scripture gives no information because the known welding track should solve the task that To improve heat transfer.

The invention has for its object an insulation and Bitumen-based waterproofing membrane to offer the opposite  the plastic systems mentioned an improved liability and thus a secure seal even in the area allows upstanding connections.

The invention has recognized that this goal can be reached if a "mechanical adhesion promoter" in the Surface area of the bitumen membrane is anchored and over the surface of the bitumen sheet protrudes so that it at the same time a reinforcement function within the on the Bitumen membrane applied plastic met.

In other words: in the bitumen membrane is a Reinforcing insert integrated, which on the one hand in the bitumen membrane is anchored and on the other hand in the Plastic matrix can be anchored if this on the Bitumen membrane is applied.

In this respect, the invention relates in its most general form an insulating and waterproofing membrane on bitumen basis with the features of the main claim.

The term "fleece-like reinforcement insert" is included to understand that they are responsible for the reinforcement literal sections of the insert cover larger ones Extend surface sections of the bitumen sheet. Basically the reinforcement insert can be made from individual fibers or fiber bundle exist. For manufacturing reasons, however, it is  preferred, the reinforcement insert also web-like form (fleece-like) so that they are in the manufacture the bitumen sheet lightly on the appropriate surfaces section placed and part in the surface section can be led in there to after solidification of the bitumen to be anchored.

As stated, the reinforcement insert can be made of one fiber fleece exist. For example, a nonwoven based Be mineral fibers.

Other suitable materials for the reinforcement insert are Plastic materials such as polyester, polypropylene or Polyamide. In addition, for example, are also nonwovens or cellulosic or glass-based fabric easily suitable to take over the desired function.

The bitumen sheet itself can also be conventional To be built wisely. It can be a bitumen sheet for hot be glued. The bitumen membrane can also be cold glued have layer at least on the surface area that is opposite the reinforcement insert, i.e. on the upper surface that rests on the surface to be insulated.

A bitumen sheet usually has a thickness from 1 to 5 mm. Accordingly, the thickness of the Reinforcement insert, for example, 0.1 to 5.0 mm.

30 to 70% of the thickness of the reinforcement insert in the Surface area of the web set and 70 to 30% of the The thickness of the reinforcement insert is above the Surface area before.  

The bitumen membrane can be built up with or without a carrier insert his.

Further features of the invention emerge from the note paint the subclaims and other registration documents.

The invention is based on an embodiment example described in more detail, this description also contains generally applicable features of the invention, the independent depending on the specific embodiment can.

Show:

Fig. 1: a section through an insulating and sealing sheet according to the invention

FIG. 2 shows a section through a threaded connection in the area, one upright member sealing sheet.

In Fig. 1, reference numeral 10 describes an inventive bitumen sheet overall. This consists of a matrix 12 based on polymer bitumen, in which a carrier layer 14 is integrated in the form of a textile fabric, which runs approximately parallel to the two surfaces 16 , 18 of the bitumen sheet.

In the upper surface area 20 a plastic fleece 22 can be seen, which has an overall thickness D.

The plastic fleece 22 is integrated approximately over half the thickness D in the surface region 20 of the web 10 and projects approximately at the height D / 2 over the surface 18 of the web 10 .

The plastic fleece 22 is first placed on the surface 18 in the manufacture of the bitumen web 10 and then cut into the surface 20 was introduced under light pressure.

Due to the fact that the lower portion of the nonwoven 22 lies completely in the matrix material 12 of the web 10 , it forms a reinforcement insert which has the function explained below with reference to FIG. 2.

In Fig. 2 a roof surface 40 can be seen, from which a chimney 42 rises, of which only the left wall section is shown.

The roof surface 40 has first been sealed with conventional bitumen sheets 1 . These conventional bitumen sheets 1 end at a distance A in front of the chimney 42 .

A bitumen sheet 10 according to the invention with an overlap (area U) is now placed on the bitumen sheet 1 in such a way that the bitumen sheet 10 has one end 10 s up to the wall of the chimney 42 and the other end 10 b over the corresponding section (U ) the bitumen sheet 1 is laid.

It goes without saying that both the bitumen sheet 1 and the bitumen sheet 10 are glued (welded) to one another, for example hot or cold, on the corresponding sub-surface (roof area 40 ) or in the overlap area U.

Subsequently, a liquid to viscous plastic mass 30 is applied to the bitumen sheet 10 , which penetrates accordingly into the protruding section of the plastic fleece 22 , so that this section of the plastic fleece 22 is surrounded on all sides by the plastic matrix 30 and, after the plastic material has set, a material-locking connection between the reinforcement insert (the plastic fleece 22 ) and the plastic coating 30 is formed.

The plastic material 30 is also led up the wall of the chimney 42 in order to additionally seal this particularly critical connection area. It may be advantageous to use a bitumen sheet 10 , the reinforcement insert 22 laterally protrudes above the bitumen sheet 10 , so that this part of the reinforcement insert 22 is now guided upwards (parallel to the wall of the chimney 42 ) and embedded in the plastic matrix 30 can, as shown in Fig. 2 (section 22 a of the reinforcing insert 22 ).

Alternatively or cumulatively, a separate reinforcing fleece or reinforcing fabric 24 can be inserted into the plastic matrix 30 and enveloped by the plastic matrix 30 , as is also shown in FIG. 2. This reinforcing insert 24 is then also preferably raised in the wall area of the chimney 42 .

The adhesive bond is significantly improved by reinforcing the interface between the two sealing materials (bitumen sheet 10 , plastic 30 ). This also applies to the peeling forces, which are improved by a factor of <10 compared to sealing with a conventional bitumen membrane.

Basically, the sealing system described is also suitable for large areas of composite gaskets made of invent bitumen sheets and plastic coatings according to the invention to manufacture.

To improve the sealing function of the plastic can, for example, from a reaction resin such as an unsaturated polyester, polyurethane or one Epoxy resin or mixtures thereof, with additional Additives such as thixotropic agents can be added.

The composite system described creates a complete one and permanent waterproofing that is also walkable readily possible.

Claims (6)

1. Insulating and sealing sheet ( 10 ) on a bitumen basis with a fleece-like reinforcement insert ( 22 ) which is fixed with 30 to 70% of its thickness in the matrix material ( 12 ) of the insulating and sealing sheet ( 10 ) and with 30 to 70% of its thickness to create a material connection between the reinforcing insert ( 22 ) and a plastic coating ( 30 ) applied thereon protrudes above the surface area ( 20 ). 2. The web of claim 1, wherein the reinforcing insert ( 22 ) consists of a nonwoven fabric. 3. The web of claim 1, wherein the reinforcement insert ( 22 ) additionally projects freely along an edge of the web. 4. The web of claim 1, wherein the reinforcing insert ( 22 ) consists of one of the following materials: polyester, polypropylene, polyamide, cellulose, glass, natural fibers. 5. The web of claim 1 with a cold adhesive layer at least on the surface area which is opposite the upper surface area ( 20 ) in which the reinforcing insert ( 22 ) is arranged. 6. The web of claim 1, wherein the reinforcing insert ( 22 ) has a thickness of 0.1 to 5.0 mm.