EP2913456A1 - Process to manufacture a floor structure with edge-insulating strip - Google Patents

Abstract

According to the invention, multi-layer edge insulation strips (1, 3) are formed by folded plastic foam strips.

Description

The invention relates to a floor structure with edge insulation strips made of plastic foam. The preferred plastic foam is polyethylene. But other plastics can be used for edge insulation strips.

Also known are edge insulation strips of other materials, for example made of cardboard.

Edge insulation strips are part of the usual construction structure for a floor.

Very often, an insulating layer is first laid on a bare floor, optionally a cover sheet, but at least a screed. The screed occurs as cement screed or as dry screed or as liquid screed. The insulating layer is not necessary for a composite screed (DIN 18560, Part 3) or for screed on separating layer (DIN 18560, Part 4).

By the use of flowable screed mortar a simple and fast screed laying is possible. Here, a prefabricated dry mortar is mixed at the construction site by mixing pumps with water and passed through a hose into the building interior. There, the viscous liquid screed is spread. The advantage of a liquid screed is that it dispenses with physically demanding work steps such as the removal of the surface or compaction by pounding or knocking. The mixture is liquid enough to level itself to a flat surface. Self-leveling screeds are available in a variety of forms (for example, anhydrite or cement). Cement screed consists of cement, sand and water. Cement screed has universal application possibilities and good properties: Simple production, good compressive strength values, insensitive to moisture due to water-insoluble lime compounds.

The cement screed is mixed with low water content and nevertheless binds to a solid screed layer. The dry screed must be laid very precisely by the screed layer. That requires some practice. Less practice is needed for floating screed. The floating screed is like water flowable and forms virtually a horizontal surface.

Dry screed is also called precast or dry subfloor. Prefabricated, force-transmitting plates are used, which are installed dry and mostly floating. The plates used include gypsum plasterboard, wood-based panels, cement-bonded chipboard, and concrete or natural stone slabs.

The insulation described above is a thermal insulation and / or a footfall sound insulation. Especially on concrete ceilings and wooden ceilings is the problem of sound insulation. This problem is not yet done with the horizontal laying on the floor insulation. In addition, a sound insulation between the screed and the building wall is required. This insulation is usually shown with edge insulation strips. The edge insulation strips are laid at the bottom of the building walls.

• a) der einfache Randdämmstreifen aus Polyethylen(PE)schaum, der als Rollenmaterial geliefert wird bzw. von der Rolle abgezogen wird.
• b) Randdämmstreifen aus PE-Schaum mit einem abwinkelbaren Fuß. Der Fuß untergreift oder übergreift die Horizontaldämmung oder die darüber liegende Abdeckung
• c) Randdämmstreifen aus PE-Schaum mit einer angeschweißten oder angeklebten Folie. Mit der Folie soll der Randdämmstreifen die Horizontaldämmung bzw. die Abdeckung übergreifen. Dadurch wird verhindert, daß Estrich in einen Spalt zwischen Horizontaldämmung und Randdämmung dringen kann.
• d) Randdämmstreifen aus PE-Schaum mit Längsschlitzung, auch Abreißschlitzung genannt
• e) Randdämmstreifen aus PE-Schaum mit Querschlitzung, die eine Verlegung um Ecken erleichtert
• f) Randdämmstreifen aus PE-Schaum mit Klebestreifen zur Befestigung an einer Gebäudewand
• g) Randdämmstreifen mit gewelltem Kunststoffschaumkern, der zum Verlegen eingeschnitten wird
• h) Mehrschichtige Randdämmstreifen, mit einer Kernschicht aus Vlies und Deckschichten aus Kunststoff
• i) Mehrschichtige Randdämmstreifen mit einer schalldämmenden PE-Schaumschicht als Kernschicht und versteifenden Außenschichten

Such edge insulation strips are known in many forms. Because of the details is on the DE 29714625 U1 . DE 4326441 A1 . DE 4442569 A1 . DE 3806676 C2 . DE 9409699.4 U1 . DE 3544514 C1 . DE 19606126 A1 . DE 29710474 U1 . DE 19803948 A1 . DE 19636621 C1 . EP 1211366 A2 . DE 3425038 C2 . DE 20105333 U1 . DE 19722756A1 . DE 3527507 C2 directed. As essential designs for the edge insulation strips are to be distinguished:

• a) the simple edge insulation strip of polyethylene (PE) foam, which is supplied as roll material or is withdrawn from the roll.
• b) Edge insulation strips made of PE foam with an angled foot. The foot engages or overlaps the horizontal insulation or the overlying cover
• c) Edge insulation strips made of PE foam with a welded or glued foil. With the film, the edge insulation strip should overlap the horizontal insulation or the cover. This prevents screed can penetrate into a gap between the horizontal insulation and edge insulation.
• d) edge insulation strips made of PE foam with longitudinal slit, also called tear-off slit
• e) Edge insulation strips made of PE foam with transverse slits, which facilitates laying around corners
• f) Edge insulation strips made of PE foam with adhesive strips for attachment to a building wall
• g) edge insulation strips with corrugated plastic foam core, which is cut for laying
• h) Multilayer edge insulation strips, with a core layer of fleece and cover layers of plastic
• i) Multilayer edge insulation strips with a sound-absorbing PE foam layer as core layer and stiffening outer layers

These edge insulation strips show problems when laying at the corners or when laying in the corners. The foam can be badly adapted to the corners. The adaptation becomes worse, the stiffer or thicker the foam is. This leads to the fact that in the corner areas often only an insufficient screed layer is created. It can form holes, because the edge insulation strip protrudes from the wall. This requires a rework and regularly causes considerable delay in construction progress. Although it is known to weaken the Randdämmstreifen by Querschlitzung so that they can easily bend at corners. The weakening is not limited to the corners, but extends with the transverse slits over the entire length of Randdämmstreifen. This causes the unstable foam to bulge slightly away from the walls. The curvature of the wall should be prevented by older proposals by sticking to the building wall.

The plastic foam preferably has a thickness of 5 to 10 mm. The thickness of the Randdämmstreifens is not at the discretion of the publisher. The thickness of the Randdämmstreifens should not only take into account the needs of sound insulation but also the needs of stretching as far as possible. The larger the screed surfaces, the larger should be the Schalldämmrandstreifen-thicknesses. In addition, depending on the nature of the screed considerable movements in the screed. A screed with a large proportion of gypsum tends to harden during setting. In contrast, the thermal expansions are lower than for a screed with a strong cement content.

To determine the correct edge insulation strip thickness / edge joint width, there are various dimensioning aids / information sheets for architects / civil engineers and screed layers.

In practice, the Randdämmstreifendicke is often chosen wrong and left to the screed, which edge insulation strips he uses. The screed layer usually buys the cheapest edge insulation strips, if it is not made concrete specifications.

As a rule, thinner edge insulation strips are chosen by the screed layer, which are not only cheap but can also be laid more easily than thick edge insulation strips. The question of which edge insulation strip thickness is correct in view of the expected screed strains is often not clarified, although the risk of damage, which is based on a too small selected edge strip thickness, out of proportion to the advantage of using to thin edge insulation strips.

Even if the screed wants to buy extra thick edge strips in the building materials trade, this will usually fail because of the existing supply.

The plastic foam is preferably made of polyethylene with a density of 15 to 30 kg per cubic meter and even more preferably 18 to 25 kg per cubic meter.

The edge insulation strips have proven themselves. Nevertheless, the invention has the task of improving the known edge insulation strips.

According to the invention, this is achieved with the help of Randdämmstreifen, which are at least doppelbar by folding. Thus, a Randdämmstreifen of, for example, 5mm thickness can be used for a low edge insulation / elongation and brought by folding to a double thickness, so that a Randdämmstreifen with a thickness of 10mm and doubled insulation effect / expansion compensation arises. With a 8mm thick edge insulation strip is created by folding a 16mm thick Dämmstreifen. With a 10mm insulation strip by folding over a 20mm thick Dämmstreifen. This makes the laying of insulation strips with greater thickness much easier.

Edge insulation strips having an initial thickness of at least 2.5 mm, even more preferably of at least 4 mm initial thickness, are preferably used.

The refolding preferably begins with the lower edge being attached to the building wall and the upper edge grasped and pulled down becomes. This creates a double-layer edge insulation strip. The refolding can also be continued. Another fold from bottom to top leads to a three-ply edge insulation strip.

The edge insulation makes sense, especially when under the screed a footfall sound insulation is provided. But it may also happen that, for example, in industrial buildings or the like no impact sound insulation is provided under the screed. Then, however, the use of a Randdämmstreifens makes sense to effect a strain compensation between the screed and the building walls.

This means that in all variants (floating screed according to DIN 18560, part 2, composite screed and screed on separating layer) edge insulation strips are required for sound decoupling and / or as expansion compensation or to avoid constraining stresses.

Due to the multi-layered training, there are further advantages. The sound insulation is better than a single-ply edge insulation strip due to the material discontinuity caused by the multilayer. Alternatively, the edge insulation strip can be folded over a third time, so that the initial thickness not only doubles, but triples.

The edge insulation strips according to the invention can be glued in a conventional manner or attached comparable.

Surprisingly, folding the invention also opens up the possibility of attachment of the edge insulation strips by tacking on the building wall. Suitable staplers / bats are in the DE202010001033 described. The term staplers / bats results from the operation of the device. The hammers / hit staplers are beaten against the raised edge insulation strips.

The Tackern is very popular with the screed publishers, however, frowned upon by other construction professionals, especially the architects, because when tacking U-shaped brackets made of metal or plastic are beaten into the plaster on the building wall. The brackets form a detectable sound bridge.

In addition, depressions / dents are caused in the Randdämmstreifen during tacking. The depressions / dents fill with screed. The screed comes into contact with the clamps, so that the sound waves can easily spread over the brackets in the building wall.

In addition, the expansion compensation function of the edge insulation strip is disturbed by the screed that penetrates into the depression / dent. In case of an expansion, the screed touches the building wall much faster than intended (without consideration of the intermediate plastic foam). After contact (without taking into account the intermediate plastic foam) immediately builds up a significant compressive stress. The result may be a crack in the screed and / or a bulge of the screed. In this case, any further expansion of the screed is more or less strongly translated into bulge. Such damage leads to costly remedial measures.

Advantageously, the sound bridges can be prevented in that the edge insulation strips are first placed in the unfolded state on the building wall and stapled before folding. Folding is only possible inside (in the direction away from the building wall). After folding, the brackets are within the resulting two-ply Randdämmstreifens so that a sufficient coverage of the brackets and resulting from the tacking depressions in the Schalldämmrand is given.

To produce inventive edge insulation strips find plastic foam strips with a width use that is greater than the desired width of Randdämmstreifens. This is referred to as overwidth in the following. For a normally 100mm wide, ridge-shaped / I-shaped edge insulation strip, the width is doubled by 200mm. A tripling results in a tripling of the output width. Also, excess widths may arise which include more than a doubling or more than a tripling of the output width or less than a doubling or more than a tripling of the output width. The deviations according to the invention are explained below.

Optionally, the edge insulation strip is needled on one side or on several sides, preferably on an inner side after folding. When needling on the inside, the diameter of the needles can vary widely. When a needling on the contact surface with the screed so thin needles are selected so that the screed can not penetrate into the edge insulation strip.

With the needling, the sound insulation can be improved. For details of the needling, reference is made to the following references: DE4325879 . DE202010003965 . DE1933292 . DE102004018550 . DE10212729 , Optionally, the needling is also used to change the compliance / softness of the Randdämmstreifens wholly or partially, to facilitate the processing of Randdämmstreifens and to improve the formation of the corners. This may include needling, for example around the corners, during laying / after tacking and / or after folding.

By surface treatment of the plastic foam the screed can be given an advantageous adhesion to the edge insulation strip. Possible surface treatments include, for example, grinding or milling or needling.

Optionally, the edge insulation strip according to the invention can also be completely or partially surface-treated and / or coated in another way. The coating can be of any type, for example known or novel layers of cardboard, cork, textile (in particular nonwoven), films. The films can be unfoamed or foamed. Adhesive layers may also be included. For surfaces or layers which are intended to interact with the screed, the coating or surface treatment is limited to the contact surface of the edge insulation strip with the screed. Taking into account the refolding, the surface-treated or coated surface is in the starting position of the Randdämmstreifens on the building wall after attachment and prior to folding on the building wall facing Randdämmstreifen side. Preferably, apart from a coating or surface treatment in the area of the refolding, as far as a stiffening of the edge insulation strip is connected to the coating. Alternatively, the coating can be cut in the region of the fold line / bend line in order to facilitate the folding according to the invention. In this case, an incision or a plurality of incisions may be provided which extend in the longitudinal direction of the fold line.

The above-mentioned installation, attachment and subsequent folding facilitate the installation of Randdämmstreifens, because the edge insulation strips at half thickness fold much easier in corners and around corners and can bend. This creates one with the same care better installation. In addition, the edge insulation strip according to the invention is much better than other edge insulation strips.

Greatest benefits are found on the inside corners and on the outside corners of a room. Inside corners are the inward-facing corners in relation to the space. Outside corners are the outward-facing corners of the room and often correspond to outside corners of the house.

When inside corners created by the folding in the wall facing away from the building wall layer of Randdämmstens a tensile stress, which causes a sharp corner in Randdämmstreifen that is unattainable in comparable conventional edge insulation strips. The tensile stress arises because the layer facing away from the building wall has undergone an elongation with respect to the layer facing the building wall due to the folding over.

In the case of outside corners, the folding creates a compressive stress in the layer facing away from the building wall, because this layer experiences compression / compression in the longitudinal direction of the edge insulation strip with respect to the layer facing the building wall. At the same time, the layer of the edge insulation strip tacked to the building wall can not completely yield to the pressure of the other layer by elongation.

The result is that also forms on the outer corners a sharp corner in Randdämmstreifen that is unattainable in comparable conventional edge insulation strips.

The advantages of the inventive formation of Innecken and outer corners can also be used to form the corners / corner pieces according to the invention and to provide edge insulation between the corners connecting pieces of conventional Randdämmstreifen. The corners preferably have a leg length of 30 cm to 150 cm, more preferably a leg length of 50 cm to 100cm. The use of special corners to solve the corner problems when laying edge insulation strips is known per se. However, these are molded parts. The production of molded parts requires forms. The forms are expensive. The molded parts only pay for themselves when large series of molded parts are required. Further disadvantages of the molded parts are a volume-consuming storage and transport.

All this is much easier and more economical in the corners of the invention.

Another advantage of the inventively foldable edge insulation strips is that production-related curvatures, which can be found in the cross section of the edge insulation strips, can be eliminated. By folding over the layers of Randdämmstreifens can be placed on each other so that the curvatures cancel each other. In conventional edge insulation strips such curvatures are a problem because the Randdämmstreifen can lift off due to the curvature of the building wall, so that a gap is formed in which dirt can collect. The dirt affects the sound insulation function and the expansion compensation by the edge insulation strip.

The folding of the invention can be applied both to edge insulation strips which are placed on the insulation, as well as on edge insulation strips, which are placed directly on the floor or the floor slab. In addition, the invention allows the edge insulation strip to be set up with a part on the floor or the floor slab to get up with another part on the insulation or the cover.

The edge insulation strips on the insulation can be glued to the insulation or loosely stand up on the insulation.

Alternatively, the edge insulation strips are also on a cover, with which the joints of the insulation are covered. Or the edge insulation strip under the cover film.

Optionally, the edge insulation strip is folded over so far that the folded part abuts the insulation and is frictionally held by the belching. The belching occurs when the width of the folded part of the edge insulation strip is greater than the distance of the sound insulation from the upper edge of the refolding. The advantage is a difference of up to 5mm. The thicker the edge insulation strip, the smaller the difference can be. However, the distance according to the invention does not rule out that are provided on the edge insulation strips in a known manner foils which rest on the floor designed sound insulation and prevent in particular with a further cover that screed penetrates into joints and gaps in the footfall sound insulation and forms sound bridges.

Optionally, the edge insulation strips are also attached to the building wall, that the building wall facing part does not overlap the resting on the floor impact sound insulation to the bottom, so does not bump on the floor on which the footfall sound insulation is designed. This can be used to bring the upper edge of the fold and / or the lower edge of the Randdämmstreifens to a certain distance to the floor of the building. The desired distance measurement can be easily transferred to all adjacent building walls and mark there after a single measurement using a commercial laser spirit level. With little practice, the edge insulation strip can be easily positioned with its lower edge on the respective marking. Similarly, the refolding with little practice can be easily done so that the top edge is located on the associated marker.

This procedure can be carried out so precisely that a usual removal of the opposite edge of the screed edge edge strip end is unnecessary. This is particularly advantageous for edge insulation strips whose resilient foam is provided with a stiffening, for example with a textile layer, in particular a nonwoven layer. Such reinforcement layers can form a considerable resistance to cutting through the Randdämmstreifens with a knife. The cutting of edge insulation strips is preferred when separating protruding edge insulation strips. Although the possibility for the separation of protruding Randdämmstreifenenden is repeatedly highlighted by means of a Abreißschlitzung. However, this solution often fails because the Randdämmstreifen not exactly horizontal, but usually fleeting in a more or less large up and down movements, ie waves, run on the building walls / are laid. The reason is that the laying of edge insulation strips is a product of the screed layer, which ends with the laying of the screed. On the finished screed, the top layer of the floor structure is laid (for example, carpet, wooden floor, tile or stone floor). One component of this product is to cut off the protruding edge insulation strip.

By appropriate planning of the construction project, a laying of the edge insulation strip according to the invention can be specified.

The advantage of the invention Randdämmstreifenverlegung is not only a substantially clean solution and avoiding the workload for the separation of the above edge insulation strip end, but also a significant reduction in the cost of materials. Not only the savings by eliminating the demolished, protruding end, but also the material, which can be omitted because the edge insulation strips can be spaced from the ground to the saved material costs. in the Medium can be assumed roughly half the thickness of the designed on the floor impact sound insulation.

In addition, the same edge insulation strips can be found in different structures with different floor structure application. Different heights of the screed and / or the footfall sound insulation laid on the floor are then laid at a different distance to the floor.

• der Zusammenhang zwischen Randstreifendicke und der Dehnung des Estrichs
• Dicke der Trittschalldämmung/Wärmedämmung
• Dicke des Estrichs
• Dicke der obersten Schicht/Verschleißschicht des Bodenaufbaus

The planning of all details for the edge insulation strip can build on familiar. This includes

• the relationship between edge strip thickness and the elongation of the screed
• Thickness of impact sound insulation / thermal insulation
• Thickness of the screed
• Thickness of uppermost layer / wear layer of floor structure

The invention of folding offers a solution even in the case that there is little interest in detailed planning. Then an over-wide edge strip can be used, which is dimensioned so that two refoldings take place; the first time to bring about a double layering of the edge dam strip and the second time to fold over the protruding end of the folded section from the edge insulation strip to a foot with which the edge insulation strip engages under the screed. It is advantageous if the folded / unfolded / angled foot is overlapped by a cover. This causes a seal of the underlying insulation against the screed, especially against liquid screed.

Incidentally, the above-described survey for the introduction of screed is anyway expedient if a horizontal screed surface is to be maintained.

Advantageously, the installation according to the invention with the distance between the bottom and the lower edge / top edge of Randdämmstreifens and the associated marking on the building wall is also applicable to conventional edge insulation strips without foldable foot. The handling of these conventional edge insulation strips is then (except for the difference of the folding over) in the same manner as that of inventively foldable edge insulation strips.

When laying edge bordering strips according to the invention, a usual tacking can take place. When tacking U-shaped brackets are beaten by the edge insulation strips in the plaster on the building wall. The brackets are usually chosen in their dimensions so that the brackets with their tips do not penetrate beyond the plaster and push against the building wall. At the same time the tips are spaced so that the plaster is not significantly affected by the penetration of the tips in the strength. The distance between two adjacent tackers is usually less than 1 meter and usually more than 0.5m. This does not exclude that two tackings occur at close intervals when the publisher feels there is a need for further tacking.

Optionally, a three-layer edge insulation strip can be used. For this purpose, the edge insulation strip can be folded zigzag-shaped.

Thinner edge insulation strips, for example with a thickness of 5 mm, can easily be folded in accordance with the invention. In this case, the upper edge is detected and pulled down over the held on the building wall part of Randdämmstreifens. The upper edge can optionally up to a determined height above the ground to be pulled down. Preferably, the upper edge is pulled down to the ground.

In order to make the folding easy, the foam strips provided for the edge insulation strips can be provided with cuts. This has the advantage, especially for larger thicknesses.

The incisions extend in the longitudinal direction of the foam strips or edge insulation strips. The thicker the cuts, the easier it is to fold. However, the incisions should leave so much material that there is still a sufficient connection between the material webs on both sides of an incision. Preferably, a material thickness of less than or equal to 1 mm is provided, more preferably less than or equal to 0.7 mm and most preferably less than or equal to 0.5 mm. Surprisingly, there is still a sufficient remaining material thickness at 0.3mm, even at even lower material thickness.

The incisions are preferably made so that a gap opens at an incision during folding. The material remaining at the incisions forms a joint.

In a fold to a three-ply edge insulation strips, the incisions are alternately preferably introduced from the one side and from the other side in the plastic foam strip, so that the zig-zag folding can be done so that opens a gap at each incision.

Optionally, folding areas are also provided on each edge insulation strip according to the invention which, like the previously explained incisions, run parallel to the longitudinal direction of the foam strips but allow the folding at different heights.

As with the first folding over, the second folding / bending over of wide edge insulation strips can be facilitated by a slit in order to reach under the screed with the upper end of the folded-over / angled edge insulation strip.

These slots also run in the longitudinal direction of the edge insulation strip or parallel to the fold line / bend line.

If a plurality of slots are provided, there is preferably between the slots a distance which is at least equal to the third thickness of the Randdämmstreifens before the first Umfalten, more preferably at least equal to half the thickness of the Randdämmstreifens before the first folding over.

The cuts, which are not expressly intended as tear-off, should leave so much material that it does not come to an unexpected tearing when handling the Randdämmstreifen. The material thickness which accidentally excludes tearing may also be less than 1 mm, for example less than or equal to 0.7 mm or less than or equal to 0.4 mm. Even a material thickness of 0.1 mm may be sufficient for Randdämmstreifen with usual density. With a given over the length of the Randdämmstreifen material thickness of at least 0.2 mm, preferably of at least 0.3 mm all imponderables are excluded. Other preferred limits of thickness may result when the material thickness at the incision interface varies, particularly when the incisions in sections result in perforation of the material or at material cutting intervals.

The perforation can also be wanted. It can be between two adjacent perforations a uniform or uneven distance. Preferably, the distance is the same.

Optionally, at the incisions also a transection of the plastic foam strip. Subsequently, the two plastic foam strips are again joined together by a joint-forming film. The joint-forming film is known per se. However, this technique is used in the known edge insulation strips only to angle one foot by 90 degrees, not for a 180 degree convolution.

The film replaces the known in the above-described edge insulation strip joint. The film may have the same nature as the known joint-forming films, i. be reset. The film may also be thicker than the known joint-forming films, so that of the foam strips connected by the film when initially set up prior to tacking, the upper foam strip is substantially perpendicular to the lower foam strip.

The joint-forming film has the advantage that it is also suitable for the connection of two films which are not adjacent to one another as a result of the above-described severing of the foam film, but are suitable for joining any desired films. This includes the joining of foam strip sections which are cut to length from a roll and placed side by side to join them. This also includes the combination of foam strip sections which have been cut to length from different rolls and placed side by side. This also includes the use of different thickness foam strip sections placed side by side. In the case of foam strip sections of the same thickness, the folding results in a doubling or tripling of the thickness. This can be called an integer multiplication of the thickness. Usually, each manufacturer has Randdämmstreifen different thickness in its product range, for example, 5mm, 8mm and 10mm. By the integral multiplication according to the invention, there are other products with thicknesses of for example 10mm, 16mm and 20mm. By combining plastic foam material of different thickness results in a much larger number of products. In this case, the use of differently thick starting foam strips preferably serves to obtain a desired Randdämmstreifendicken and / or preferably to facilitate the folding at the joints.

A further increase in the product number results from a combination with further foam material, for example commercially available thinner foam webs. Of particular interest may be the combination with heavy foam. For the purposes of the invention, the heavy foam at a density of at least 50kg per cubic meter, preferably of at least 60kg per cubic meter, but also a combination with lighter foam with a density greater than 30 kg per cubic meter and less than 50 kg per may be of interest.

The heavy foam webs according to the invention preferably have at least a thickness of 1 mm, more preferably of at least 1.5 mm and most preferably of at least 2 mm.

The invention also includes the use of foam strip sections having a different volume weight.

Incidentally, the edge insulation strip according to the invention can be provided at the bottom with a known foot or at the top with a known Abreißschlitzung. The foot may consist of unfoamed foil flaps or PE foam strips or other materials. Other materials may also be nonwovens or hollow profiles or plates. The foot can also be made of paper or cardboard.

The foot, like other edge insulation strips, has the task of underlining the screed. The foot can lie on the insulation. But the foot can also subdue the insulation.

Optionally, the foot is provided with an adhesive tape so that it can be positioned on a floor or on / under an insulation or on / under a cover sheet.

Optionally, the various layers of a Randdämmstreifens invention are glued together after folding over. This can be done in known adhesive strips.

Likewise, an adhesion of the edge insulation strips according to the invention can be carried out with parts of the floor structure.

The bonding can be done by applied adhesives.

But even double-sided self-adhesive strips are suitable for bonding.

In the drawing, an embodiment of the invention is shown.

Fig. 1 shows a Randdämmstreifen with an incision 2, which divides the Randdämmstreifen into an upper part 1 and a lower part. The incision is located in the embodiment exactly in the middle.

The edge insulation strip lies behind Fig. 1 on the plaster layer 4 of the building wall. The edge strip is fastened in a manner not shown on the lower part 2 of the plaster layer 4 by tacking. When tacking staples are beaten by the edge insulation strips in the plaster. The stapler is a common tool whose essential component in construction matches the stapling tools with which paper sheets are stapled together. These stapling tools are pressed together like a pliers. In each case, a clip through the paper pressed. The stapling tools are also called tackers. The staplers often (and undesirably) used by the screed layers differ from the staplers used to staple paper by a moving, hammer-like weight. The hammer-like weight brings the pressure that is necessary to beat in the inventive tacking the brackets by the edge insulation strips in the plaster. These tackers are referred to as punch tacklers or staplers.

Fig. 1 describes a starting position before folding over the upper part 1 as shown in FIG Fig. 2

By folding the original 5mm thick edge insulation strip is doubled to 10mm.

Fig. 3 shows a Randdämmstreifen with two cuts 14, through which a lower part 11, an upper part 13 and a middle part 12 result. The lower part 11 is as after Fig. 1 stapled to the plaster layer 10.

By folding down the middle part 12 and folding up the upper part 13, a three-ply marginal strip can be produced. For graphic reasons, the three parts of the Randdämmstreifens in Figure 4 shown at a distance from each other. Due to the folding, the various parts should but close to each other.

The three-ply results in a final thickness of 15mm with a starting thickness of 5mm.

In the embodiments according to 3 and 4 have been introduced from one side and from the other side incisions in the plastic foam. The incision between the lower part of the Randdämmstreifens and the overlying part has been introduced plaster layer side in the edge insulation strip.

In 3 and 4 the notch 14 has been inserted from the opposite side.

The incisions have a depth of 4.5 mm with a foam thickness of 5mm, so that a foam bar of 0.5mm thickness connects the adjacent parts together.

Fig. 5 shows a Randdämmstreifen which is composed of two foam strips 21 and 22 of the same dimensions together, which are connected to each other with a film 23. The film has low restoring forces in the embodiment, which hold the foam strip 21 in the illustrated position on the foam strip 22, but still allow a slight folding.

The embodiment according to Fig. 6 differs from the embodiment according to Fig. 5 by foam strips 26 and 27 of different thickness, which are interconnected by a film 28.

Fig. 7 shows a screed publisher when attaching a Randdämmstreifens 30 with 3 mm thickness and double width compared to a usual for this case edge insulation strip. The edge strip is stapled in the lower half against the building wall. This is done with a staple hammer / Schlagtacker 32, the stapler / Schlagtacker 32 is beaten against the Randdämmstreifen. As a result, penetrate U-shaped staples through the plastic foam in the plaster layer on the building wall.

With the thin foam film / Randdämmstreifen 30 a contour-accurate installation at the corners 31 can be easily realized. The corner 31 is an inner corner. Fig. 9 shows an outer corner 34.

Fig. 8 shows the further installation of Randdämmstreifens 30 in the region of the outer corner 31. In this case, the upper edge 30a of the Randdämmstreifens of Hand detected and pulled down to the floor 33 and creates a double-edged edge insulation strip with 6 mm total thickness.

In other embodiments, for example Fig. 9 , the foam strip has different thickness, smaller or larger than 4mm. In this case, from foam strips having a thickness smaller than the usual minimum thickness Randdämmstreifen with a thickness above the usual minimum thickness arise.

Fig. 10 shows a floor 40 and a building wall 41.

On the building wall 41, a Randdämmstreifen has been angegetackert.

Prior to tacking, the lower edge of the edge insulation strip 46 has been measured at a distance from the bottom 40, which is smaller than the thickness of the intended impact sound insulation. For the measure, a mark has been attached to the building wall 41. Subsequently, the marking has been transferred to all building walls by means of a laser scale, which adjoin an intended screed layer 43.

The distance dimension results from the thickness of the intended footfall sound insulation 42, the thickness of the screed layer provided and the width of the PE plastic foam strip used as Randdämmstreifens and from the shown refolding. Thereafter, the edge insulation strip in the area of the impact sound insulation is single-layered and in the area of the screed layer double-layered. At the same time, the edge insulation strip at the upper edge of the fold should be completed with the screed layer. This way of laying has the advantage that the impact sound insulation in the edge insulation strip laying an aid. The impact sound insulation presses the edge insulation strip against the building wall. This makes it possible to attach the Randdämmstreifen with less staples or less tack on the building wall. After tacking the part 44 of the Randdämmstreifens the footfall sound insulation 42 is laid. Subsequently, the part 45 of the Randdämmstreifens is folded over, so that the part belonging to the Randdämmstreifen part 45 abuts on the impact sound insulation 42.

Fig. 11 shows a further embodiment.

It is after Fig. 11 on a concrete floor 50 on the plastered building wall 51 an over-wide edge insulation strips 52 made of PE foam have been set up. The edge insulation strip 52 consists of two sections 52a and 52b. The lower section 52b in the view is tacked to the building wall 51. In this case, clamps penetrate the edge insulation strips and into the plaster layer of the building wall 51. Section 52a is 5 mm wider than section 52b. In other embodiments, the difference is 1 to 10mm, preferably 3 to 6mm. The edge insulation strip is as in the embodiment after Fig. 10 folded. In contrast to the embodiment according to Fig. 10 But the section does not hit the insulation, but the concrete ceiling. Due to the corresponding length, the folded-over part of the edge insulation strip jams on the concrete floor.

The floor structure after Fig. 12 is also provided on a concrete floor 55 on a building wall 56. The structure has an edge insulation strip 57 made of polyethylene with sections 57a and 57b, the up to a foil flap 58 with the edge insulation strip after Fig. 11 matches, also in terms of refolding.

To Fig. 12 the folded-over section is equipped with the film flap 58 made of unfoamed polyethylene.

In the initial position of the Randdämmstreifens 57 before folding over the film tab is still on the wall side of the portion 57 a. After this Umfalten engages the film tab 58 on the insulation 61. The insulation 61 butt against the folded edge insulation strip.

Over the insulation 61 and the film flap 58 is a polyethylene cover 59, which prevents the penetration of screed into the joints of the insulation 61.

Over the cover sheet 59, a screed layer 60 has been applied.

The embodiment according to Fig. 13 also shows a floor structure on a concrete floor 65 on a building wall 66 with an insulation 68, a cover 69, a screed layer 70 and a foldable edge insulation strip 67th

In contrast to the embodiment according to Fig. 12 the portion 67a is so much longer than the portion 67b that the folded-over portion can reach under the cover sheet 69. In this case, the thin foam foot can be easily bent as a Randdämmstreifen full thickness.

In other embodiments, the bend is facilitated by a slit of the foam foot.

FIGS. 15 and 16 show a Randdämmstreifen, consisting of sections 107 and 108. While the foldable edge insulation strips described above are folded from top to bottom, the in FIGS. 15 and 16 shown edge insulation strips folded from bottom to top.

FIGS. 15 and 16 show the edge insulation strips when laid on a wall 105 and on a floor slab 106. In the first step, the edge insulation strip is positioned in an L-shape on the wall 105 and on the floor slab 106.

Subsequently, the upright on the wall 105 and upstanding portion 107 is stapled to the wall 105.

This is followed by a refolding of section 108 upwards. In the position after Fig. 16 the edge insulation strip is held by laying the insulation 109.

In Fig. 17 shows a further embodiment of the invention with a foldable from top to bottom edge insulation strips, consisting of sections 87,88 and 92. In this case, the sections 87 and 88 form the upright web of an L-shaped laid Randdämmstreifens. The section 92 forms a horizontally angled foot.

When laying the edge insulation strip is erected upright on the wall 85 and on the floor 86 as a whole. In the position, the portion 88 can be easily tacked to the wall 85. It follows the folding of the section 87 from top to bottom. At the same time, the foot 92 is angled. The insulation 90 is laid on the foot 92 and on the floor 86. About the insulation a cover sheet 89 is laid; above the screed 91 applied.

When laying / folding over and bending off, cuts at the fold lines facilitate folding over.

The embodiment according to Fig. 14 shows a Randdämmstreifen, after the Randämmstreifen in shape and placement Fig. 17 corresponds, but not on the floor 96 but on the insulation 100 stands. As a result, the portions 97 and 98 of the Randdämmstreifens are smaller than the sections 87 and 88. The cover 101 engages over the foot 99 and seals against the liquid applied screed 102 until its hardening. Thereafter, no sealing effect is required.

The edge insulation strips after Fig. 14 stands on the floor slab 96 and is tacked with its portion 97 on the wall 95. To measure the height of the Randdämmstreifens laser car are very beneficial. After measuring a Height, this amount can be easily transferred to other locations / building walls by rotation of the laser balance.

Claims (14)

Production of a floor structure with a edge insulation strip made of plastic foam, in particular PE foam, wherein the edge insulation strip is laid on the building wall below before a screed is introduced, and wherein at least partially an over-width plastic foam strip is attached to the building wall so that the plastic foam strip is foldable, and that
after the attachment, a folding to an at least double-layer edge insulation strips or a multiple refolding into a multi-layer edge insulation strip takes place. A method according to claim 1, wherein the plastic foam strip for refolding detected at the top and pulled down so that a double-layer edge insulation strip is formed, or that the plastic foam strip is folded from bottom to top, so that a double-layer edge insulation strip is formed. A method according to claim 1 or 2, characterized in that corner pieces are produced by folding over a plastic foam strip and the corner pieces are connected to each other by other edge insulation strips, wherein the corner pieces preferably have a leg length of 0.3 to 1.5m, more preferably 0.5 up to 1m. Method according to one of claims 1 to 3, characterized in that over-wide plastic foam strips are used for the production of inventive edge insulation strips or multiple starting plastic foam strips are connected with a joint-forming film to an over-width plastic foam strip, wherein the hinge-forming film glued or welded to the output plastic foam strips can be
or wherein the starting plastic foam strips are joined together by paper strips glued to the starting plastic foam strips. Method according to one of claims 1 to 4, characterized in that plastic foam strips a) uniform thickness can be used as a starting foam strip for a multi-layer edge insulation strip, preferably with a Minimum thickness of 2.5 mm, more preferably with a minimum thickness of 4mm
or b) different thickness can be used as the starting foam strip for a multi-layer edge insulation strip to adapt to a desired thickness and / or to facilitate bending or c) different thicknesses are used as the starting foam strip for a multi-layer edge insulation strip, wherein starting foam strips are used with a minimum thickness of 2.5mm, preferably at least 4mm, with a starting foam strip having a thickness of less than 2.5mm, preferably an initial thickness of 1 to 2mm A method according to claim 5, characterized in that plastic foam strips of different thickness are used as the starting foam strips for a multilayer edge insulation strip, using starting foam strips having a thickness of greater than or equal to 2.5 mm with a density of up to 30 kg per cubic meter and wherein starting foam strips having a thickness less than 2.5 mm with a volume weight of more than 30 kg per cubic meter, in particular starting foam strips having a thickness of 1 to 2 mm with a density of 50 kg per cubic meter or more. Method according to one of claims 1 to 6, characterized in that the plastic foam strips on the plaster layer of the building wall with the part or section to be tacked, which should lie even after folding directly to the building wall. Method according to one of claims 1 to 6, characterized by the use of a plastic foam strip, a) wherein the portion of the plastic foam strip attached to the building wall has the same or different width than other portions of the plastic foam strip,
and or b) wherein all sections of the plastic foam strip stand up on the floor or on the insulation
or c) wherein at least the attached to the building wall portion of the plastic foam strip rests on the ground and at least the wall facing away from the building wall portion of the plastic foam strip rests on the insulation
or d) wherein the attached to the building wall portion of the plastic foam strip is spaced from the ground or at a distance from the insulation and is preferably measured by means of laser scales on the building wall
or e) wherein the side facing away from the building wall of the plastic foam strip presses on the floor or on the insulation, so that the associated end is held frictionally
or f) the edge insulation strip comprises the insulation laterally g) the edge insulation strips the screed underlined with the end of the folded section of the plastic foam strip. Method according to claim 8, characterized by the use of an edge insulation strip a) wherein the edge insulation strips with the attached to the building wall portion of the plastic foam strip on the insulation and stands up with the end of the folded portion of the plastic foam strip on the insulation, wherein the folded portion of the plastic foam strip preferably has a greater width than the fixed portion
or b) wherein the edge insulating strip with the attached to the building wall portion of the plastic foam strip rests on the floor and with the end of the folded portion of the plastic foam strip also on the floor, wherein the folded portion of the plastic foam strip preferably has a greater width than the fixed portion of the plastic foam strip
or c) wherein the edge insulating strip includes the insulation laterally by the attached to the building wall portion of the plastic foam strip rests on the ground on which rests the insulation, and with the end of the folded portion of the plastic foam strip on the insulation, wherein the folded portion, preferably has a greater width than the fixed portion of the plastic foam strip
or d) wherein the edge insulating strip with the attached to the building wall portion of the plastic foam strip from the ground on which the insulation rests, distance and stands with the end of the folded portion on the insulation, wherein the distance measure of the insulation of the upper edge of the refolding smaller than the width of the folded portion of the plastic foam strip is
or e) wherein the edge insulating strip includes the insulation laterally by the attached to the building wall section rests on the ground or at a distance from the ground on which the insulation rests, wherein the distance is smaller than the thickness of the insulation and wherein the edge insulation strips the bottom of the folded portion of the plastic foam strip engages the screed, Method according to one of claims 1 to 9, characterized in that the edge insulation strip is tacked to the building wall side portion of the plastic foam strip on the building wall, wherein the Tackerstellen be covered by the folding of the Randdämmstreifens. Method according to one of claims 1 to 10, characterized by the use of plastic foam strips with at least one joint-forming incision in the Umfaltungsbereich, a) preferably with a plurality of mutually parallel incisions in the Umfaltungsbereich with a distance to each other, which is at least equal to 1/3 of the thickness of the plastic foam strip before the folding, even more preferably at least equal to half the thickness of the plastic foam strip before folding it
and or b) wherein after the incisions preferably still a material thickness of less than / equal to 1mm, more preferably less than / equal to 0.7mm and most preferably less than or equal to 0.4mm remains on the plastic foam strip
and c) wherein after the incisions on the plastic foam strip preferably a minimum material thickness of 0.3 mm remains Method according to claim 11, characterized by the use of plastic foam strips with incisions arranged alternately on the plastic foam strip and / or
wherein along the fold line in the folding a plurality of incisions are provided at a distance from each other in succession, which perforate the plastic foam strip. Method according to one of Claims 1 to 12, characterized in that the section of the plastic foam strip fastened on the building wall side is stapled at intervals of 0.3 to 1 m. Method according to one of claims 1 to 13, characterized by a surface treatment and / or coating of the plastic foam strip, preferably by a needling of Randdämmstreifens on the plastic foam strip surfaces, which lie after folding on the edge insulation strip inside and / or outside.

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