WO2011042272A2

WO2011042272A2 - Flat, angled molded body made of plastic and use thereof as a component in buildings and on facades, preferably as a corner window

Info

Publication number: WO2011042272A2
Application number: PCT/EP2010/063064
Authority: WO
Inventors: Carlo SCHÜTZ; Wolfgang Stuber; Ralf DÜSSEL; Udo Daniel
Original assignee: Evonik Röhm Gmbh
Priority date: 2009-10-07
Filing date: 2010-09-07
Publication date: 2011-04-14
Also published as: WO2011042272A3; DE102009045443A1

Abstract

The invention relates to a flat, angled molded plastic body (1), characterized in that it consists of at least two panel sections (2) and (3), wherein the interior angles and the exterior angles are different from 180° between the panel sections. The molded plastic body (1) is produced by means of cast polymerization. The invention further relates to the use of said molded plastic body, in particular as a corner window, facade component or bay element for the interior and preferably for the exterior area.

Description

Flat, angled molded plastic and its use as a component in buildings and on facades, preferably as corner windows

The invention relates to corner windows and transparent

Wall elements in the interior and exterior. In particular, the invention relates to the use of

transparent or translucent plastic moldings in an angular arrangement, that is, the use of a

transparent or translucent plastic molding comprising two disc elements which abut each other so that they form a corner, wherein both the inner angle and the outer angle between the two disc elements of 180 ° is different.

The following publications are mentioned in the state of the art:

Dl = DE 862 947 (April 27, 1953);

D2 = US 5,589,248 (December 31, 1996);

D3 = DE 103 00 389 AI (29.07.2004);

D4 = EP 1 811 114 A2 (25.07.2007);

D5 = US 4,598,513 (July 8, 1986); and

D6 = EP 0 467 191 AI (22.01.1992).

To the extent, as on buildings and facades or in the

Interior fittings increasingly glass or other transparent or translucent materials are installed, transparent or translucent corner solutions are increasingly in demand.

In an early period of building architecture you have

tried "corner solutions" with the help of

To realize single pane glasses. So are from the at that time practice transparent "Eckfenster" or oriels in the form of curved or rounded, only a few millimeters thick, mineral Einscheibengläser known

Bends and curves of the single-pane lenses can be produced, for example, by thermoforming. Today, however, these elements no longer meet the technical requirements for thermal insulation and / or sound insulation in window and façade technology. In addition, such

Solutions made of glass usually very fragile and economically most expensive to produce.

The Dl reveals an edge protection for all-glass corners, especially for shop windows. at

Shop window frame constructions in which the

Windows are angled, glass panes can collide with the edges. The edges of the panes are either cemented directly to each other or one pushes between the sensitive cut edges of the glass panes a light metal profile, which in turn is cemented with the glass edges. Even these solutions no longer meet today's increased requirements

as far as possible transparency also in the corner area as well as good insulation effect.

In more modern façade construction - preferably in glass façade construction - transparent corner solutions become angular

Arrangement of modern insulating glass produced. This

The term "corner window" used in this context differs from the term "corner window" as it is used in the automotive industry.In automotive construction, corner windows are usually small-scale, fixed side windows in the doors or close the A or C columns. "Corner" in the context of the manufacture of automobiles refers exclusively to the form of a window as a triangle or an irregular polygon

Contrary to the use of the term "corner window" as used in the invention.

An example of practical practice corner windows is the combination of standard windows into one

Angle arrangement. Two methods are common in practice. Either the frame frames of the

Window elements connected to each other directly or via an adapter profile, or else the double ^¬ or triple insulating glass panes without the frame section are joined directly to each other. Although such arrangements very well meet today's technical requirements, but both solutions have in common that the so

Corner not completely transparent,

transparent and clear. In the first variant is always a profile system to see, which used the

Surrounds the standard window. The corner is never

transparent.

In the second case, it can not be prevented by the angular bonding of frameless

Insulating glass panes whose edge seal - usually recognizable as black rubber gaskets - becomes visible. The result is the so-called shiplap. This fold is clearly visible like the profile system. As a rule, the stepped rebate is covered externally by an aluminum panel. If you glued on the other hand thick transparent discs

Sealing compounds, it is inherent in this solution that the adhesive seams are either not transparent or usually not permanently weather-resistant and over time Gray, yellow, erode and pollute. This is disadvantageous in places that you can not reach after obstruction.

D3 describes a typical corner arrangement for

Insulating glass elements. To seal the corner

used sealing elements 11 and 12 according to Figure 1 of the D3 and the insulating element 10 made of solid or fibrous or felt-like materials are prohibitive for a high

Transparency or translucency of the corner solution.

The D6 describes a residential building arrangement with

Corner windows, which have been realized in the usual form of the installation of two windows in an angular arrangement by the frames of the windows are joined together. However, such a "corner solution" can not do justice to the desire for a transparent or translucent corner solution with respect to the two edges forming the corner, since the corner is formed by the frames of the window panes and the permeability of the respective

Frame for light remains well behind the permeability of the disc material.

In D5 a building facade is described, which consists of several juxtaposed window elements, wherein at least one unit is described as a corner window on which both sides of window elements are adjacent and fixed. The indicated in US 4,598,513

Eckfensterlösung represents a unit that consists of angularly arranged insulating glass panes, with a clearly visible multi-chamber profile with square cross section is visible in the corner. So that's also here corner windows in its corner neither clear nor transparent.

From the D2 curved single-pane glazing with sharp radius known as well as their combination to an insulating glass-like corner arrangement, as to

Example from Figure 7A of D2 shows. In order to create a practical and transparent corner solution, according to the D2, you have two curved discs with each other

combine and build together. Thus, the D2 significantly describes the manufacturing process of a Glasabkantung and only in relation to mineral glass, which

For example, it is already confirmed by the heating and forming temperatures. The dimensions that can be realized according to D2 are found to be relatively thin-walled. Overall, designs according to the D2 show an increased

Fracture susceptibility of the Eckausbildung, in particular and not least because of frozen stresses in the bending process, the thin-walled glass and the framelessness of the corner itself.

According to D4, a full glass corner made of insulating glass is disclosed. Here, different possibilities are shown for the connection and sealing of the edges of the float glass panes, which form an all-glass corner. On the one hand, adhesive strips of pure acrylate are proposed, which should have the same refractive index as mineral glass. On the other hand, silicone-based hot-melt adhesives are used in a transparent and crystal-clear embodiment

mentioned. In that sense, it depends on the use

mineral insulating glass limited D4 at least at the abutting edge regularly a separate, additional

Bonding. Due to this Mehrkomponentigkeit (mineral glass and adhesive), the structure of two parallel Slices for obtaining an isolating effect relative

consuming. In addition, the transparency or translucency in the joint area is usually deteriorated significantly due to the multi-component in general.

The previously known transparent corner solutions or corner or angle windows thus generally show three decisive disadvantages, if one wishes to use these as window or wall elements in buildings or on facades. Either these solutions are only insufficiently transparent in partial regions (for example in the region of a peripheral frame or over the corner) or else they are not rendered necessary by the known single-pane lenses

physical properties of modern day modern

Glazing elements achieved, such. The required thermal insulation or the corner solutions are complex and expensive to manufacture, which is especially true in the case of two- or Mehrscheibenisoliergläsern.

Even indoors, transparent corner solutions are known. In the sanitary area one knows many times

Shower wall systems with curved glass or plastic elements, or where flat slices are joined together by profiles to form transparent "over-the-corner solutions." Again, these interior solutions have in common that only thin single-pane glass sheets are used or that for the realization of a corner frame members are required, which in terms of their transparency unacceptable behind the transparency of the discs

fall behind. In conclusion, it must be stated that all listed solutions for corner windows or for transparent wall elements either to transparency in the corner or on

technical characteristics that allow a shoring as a window or the like is lacking.

There is therefore the task of providing a technical solution for the building, facade and window construction, which makes it possible to produce a visually completely transparent corner solution and at the same time to meet the requirement to build this solution according to the current technical rules of architecture as a window can or with

continue standardized window elements, with customary technical requirements for window elements are taken into account.

These are solved as well as other unspecified tasks, which are however without further ado from the

can derive introductory discussion by flat, angled plastic moldings with all the features of claim 1. Advantageous embodiments of

flat, angled, according to the invention

Plastic moldings are in the on claim 1

described back-related product claims. A

Use of the molded plastic according to the

Invention is disclosed in the independent claim of the corresponding category. Advantageous modifications of

Uses of the subject invention are protected by the claims to corresponding independent claims. Characterized in that a flat, angled plastic molded body, characterized in that it consists of at least 2 plate sections, wherein both the inner angle and the outer angle between the

Plate sections of 180 ° are different, and the plastic molded body is produced by cast polymerization, manages the provision of transparent corner solutions for facade, window and building construction, which according to the current technical rules of architecture all

Meet requirements for windows and which with

standardized window elements can be continued, taking into account all the usual technical requirements for window elements.

In addition, with the flat and angled moldings made of plastic according to the invention, a number of other not foreseeable advantages can be achieved. These include:

• The corner glazing with insulation values similar

Insulating glass, but without multilayer structure

• A high static load capacity

• A particularly pronounced shear stress stability

• Due to the monolithic design (cast glass)

no risk of condensation or fogging, such as with insulating glass

• It is a virtually any design of

Geometries of corner solutions possible

• The corner solution is joint-free and / or bum-free

producible. • Corner windows can take over and derive load, which normal window elements can not take over.

• An essential point for a component - especially in the form of a corner window, is its suitability

Installability or the connection options

further elements or masonry.

• The plastic molding is mechanical

repairable.

The invention provides plastic moldings

Protection that are flat and two panel sections

have, wherein the two plate portions form an angle with each other, which is different from 180 °. This implies that the two sections of the panels must always define an angled plastic molding. If the two sections defining the plastic molded body are viewed from above in section or in plan view, an outer angle and an inner angle result between the sections at their abutting edge.

These are within the meaning of the invention both of 180

different, so that is a real angled

Plastic molding results. expedient

Plastic moldings of the invention have an internal angle in the range of 45 ° to 135 °, wherein the external angle with respect to the two plate sections is preferably in the range of 315 ° to 225 °. Most notably

advantageous modifications of the invention

Plastic moldings have an internal angle in the range of 60 ° to 120 °, while the external angle is in the range of 300 ° to 240 °. Another special

Design relates to flat plastic moldings in

Angle shape, with the inner angle between the Plate portions is about a right angle of about 90. This then corresponds particularly advantageous a

Outside angle of about 270 °. The two plate sections in this case form an approximately right angle

together .

It is of particular importance for the flat and angled plastic moldings according to the invention that they are produced in a casting or casting polymerization process. These methods are familiar to the person skilled in the art.

As a result, highly transparent shaped bodies are obtained. The production of plastic moldings by a casting or casting process is usually carried out by the so-called chamber process. The chamber method is one of the oldest methods for the bulk polymerization of ethylenically unsaturated monomers and is z. B. already in the

Patent US Pat. No. 2,154,639. Nonetheless, it is still of great technical importance today. During the chamber process, a mixture of ethylenically unsaturated monomers and optionally the corresponding one is poured

Polymers having a proportion of usually up to 25% by weight of polymer, together with radical initiator (s) and possibly other additives, e.g. Crosslinkers and

Comonomers, in a shaping chamber, for example, from two spaced plates, for. As silicate glass panes, and a sealing cord is formed, and polymerizes the reaction mixture. Corresponding modifications are made to the chamber for the polymerization for the production of bent cast glass molded bodies. Furthermore, the casting process can also be carried out continuously (continous cast). This is known to the person skilled in the art.

The use of prepolymerized material reduces the shrinkage, reduces the heat development in the further polymerization and shortens the reaction time. The polymerization is often carried out in a warming cabinet initially at low temperature, for. B. at 20 ° C to 60 ° C, and then usually at a higher temperature, for. B. at 100 ° C to 130 ° C completed. This results in a volume shrinkage of up to 20%, which is compensated by compressing the plates, so that stresses are avoided. For this purpose, brackets are usually used

used, embrace the two plates and the intervening sealing cord and compress.

The material for plastic molding according to the invention can be selected from a wider range of suitable plastic materials. These include, among others

Polystyrenes, polycarbonates, polyoxymethylenes,

Poly (meth) acrylates, polyphenol oxides, polyethylenes,

Polyvinyl chlorides and the like more. In this

The term poly (meth) acrylates stands for

Polymethachrylate and / or polyacrylate.

With a view to a desired use as windows, transparent or translucent plastic materials are particularly useful. But not transparent

Plastics can be used successfully as building or façade elements. Of the plastics mentioned, in particular the acrylic glass (= poly (meth) acrylate) and the polycarbonate are used as structural building materials.

In a very particular embodiment, the plastic molding according to the invention is characterized in that it consists of poly (meth) acrylate. Here are due to their superior transparency plastic moldings particularly useful, which consist of polymethyl methacrylate = PMMA.

Alternatively, plastic moldings made of polycarbonate are particularly interesting. Polycarbonates (PC) are polyesters of the carboxylic acid (H ₂ CO ₃ ). at

transparent polycarbonates formed by using phosgene gas (COCI ₂ ) by polycondensation of a polymer of bi-phenol acetone and the carbonate. It arises

Hydrochloric acid as by-product. Polycarbonates are

Thermoplastics with a very strong

Network structure and they are therefore much more impact resistant, thermally and chemically resistant, but also more brittle than acrylic glass.

Both acrylic and polycarbonate are basically very good with suitable, transparent adhesives

glued together. Both building materials can be cold formed as well as thermoformed. When hot deformation is important to ensure that plates for

Reduction of residual stresses must be tempered before stripping from the mold.

An inventive flat and angled

Plastic moldings can in so far as several pieces or

be one piece. In multi-piece plastic moldings in Angle shape, for example, two flat plates connected to each other via a common abutting edge to form an angled plastic molded body, for example, be glued. A preferred variant of the

Plastic molded body is therefore that the two disc sections are produced as individual elements and then by means of a suitable adhesive

glued together.

Far more preferred is within the scope of the invention

However, the one-piece design of the flat, angled plastic molded body. It is the

one-piece mold comprising the formation of the angle between the plate sections advantageously already adapted to the later application or intended use. In an advantageous embodiment of the plastic molded body is therefore characterized in that it is made in one piece and no longer needs to be deformed after the polymerization for further use.

The two plate sections of the plastic molding form an angle different from 180 ° with each other. The two disc sections do not have to

necessarily flat or flat. Rather, it is also possible that one or both of the sections have a non-flat, for example curved or curved shape

exhibit. Both are by using appropriate

Molds feasible. In a particularly convenient

Embodiment, the plastic molding of the invention is characterized in that the two

Plate sections can each be flat or curved independently. In this way you can

For example, corner window solutions or facade solutions with curved discs are realized so that the overall impression of a round window arises. This can be further enhanced, if not only the

Surface portions of the discs have a curvature, but also the angle itself are "curved".

Of course, a "curvature" of the angle can be realized even without curvature of the disc sections.

A particularly interesting embodiment of the invention therefore relates to plastic moldings, in which the angle is an arc shape and a defined radius

having. By such a "rounded angle" a continuous sheet impression of the angled plastic molded body is particularly advantageous.

An inventive plastic molding whose corner can be angular, angular or radiused with a defined radius, should suitably meet certain technical requirements that significantly affect the appearance and the dimension of the element. One of these aspects relates to the thickness of the plastic molding.

If the plastic molding is to be used as corner window solution, bay window or façade component, its general thickness can vary over a wide range.

In particular, the thickness of the two plate sections may be the same or different. Basically

Material thicknesses in the range of a few millimeters to a few tens of centimeters are thinkable and producible. to

Fulfillment of certain specifications in facade and window construction with respect to connection solutions to existing glazing, heat insulation and insulation, it is particularly preferred if the two plate sections independently have a thickness of between 20 mm and 160 mm. The U- Value indicating a measure of the thermal insulation of window elements should, if possible, be very small. For plastics, which are also known to be poor conductors of heat, a low U-value can be achieved by increasing the thickness of the material. The moldings here preferably have a minimum thickness of 20 mm, more preferably of 40 mm and most preferably of 50 mm or 60 mm, in order to have a comparable or better insulation than current window elements made of silicate glass. To one

Furthermore, thicknesses of greater than 55 mm, more preferably of more than 65 mm and very particularly preferably of more than 75 mm are ideally suited for connection to other standard windows. Particularly useful is the range of 40 to 85 mm, advantageously from 50 to 80 mm and in particular, the thicknesses 55 - 75 mm are of interest.

With regard to the dimensioning of the corner windows, there is otherwise no special limitation. Sizes of up to 2 x 3 meters, 2 x 4 meters or even larger can be imagined and produced. Other limiting sizes for corner windows can be their mass and manageability. Although these requirements may have some influence on practical element heights and leg lengths, they do not imply restrictions for larger corner solutions.

A particular aspect of the planar and angled plastic molded article according to the invention is its preferred transparency or translucency, in particular in the corner or angular region. Transparency is generally the

Ability of matter electromagnetic waves, in the

Generally from the area visible to humans, pass therethrough. Translucency in turn stands for one

Property to pass the light only partially. In contrast to the transparency (= image or

Blight permeability) one can translucence as

To describe permeability.

Incidentally, in the context of the invention for the definition of the term transparent, the definitions from the

international standard ISO 14872: 1999 (E)

taken up.

The cited standard describes a method for measuring haze in transparent plastics, and thus, indirectly, a definition of the term "transparent" is also given. Haze is an optical property that results from the wide-angle light scattering of light in

transparent and results in essentially colorless plastics

The procedure given is only valid for measuring haze values less than 40%. However, the terms translucent and opaque also result from a distinction between transparent and translucent. Transparent therefore means a transmission between 5 and 100% with a haze of 0 to 40%. Translucent means a transmission of 5 to 100% with a haze of greater than 40 to 100%. Opak covers the range from zero to less than 5%

Transmission at at the same time 0 to 100% Haze.

The terms transmission and haze and their determination in turn are familiar to the expert. For the invention, it has now been found to be particularly interesting that the edge or the angle of

Plastic molding can be made so that there is no or at most slight changes in the transparency or translucency of the corner solution,

compared with the passage of light outside the corner or angle range. This property shows in particular the superiority of the plastic molding according to the invention over the previously known in practice and the literature transparent corner solutions in which always

Transparency losses due to frame connections or

Adhesive templates.

A particularly useful plastic molding according to the invention is characterized in that the transparency or translucency, determined by the angle, substantially the transparency or translucency of the disc, determined at any point of the disc,

corresponds.

If you determine the transparency of the plastic molding over the corner or the angle, it results very astonishing as good as no loss. This depends, among other things, on the slight influence on the transmission of the light

together .

A particularly expedient embodiment of the

The plastic molding according to the invention is characterized in that the transmission ratio Tl: T2 is greater than or equal to 0.7, preferably greater than or equal to 0.9, where ΤΊ indicates the transmission through the plastic molded body along a distance is measured whose direction is determined by two intersections, with one of the points of intersection of the imaginary extensions of substantially plan

Sections of the outer side of the disc elements results, and the other of the intersection points in the same plane as the first intersection point results from the imaginary extensions of the substantially planar sections of the inner sides of the disc elements on the other hand, and T2 indicates that transmission along the thickness of one of the

Slices are measured at any point. In other words, T1 is the transmission or

Permeability over angle or corner and T2 is the

Transmission along the thickness of any

Disk portion. Even more preferred is in a plastic molding according to the invention the

Transmission ratio Tl: T2 less than or equal to 1.0.

Another particular aspect of the invention

Plastic molding is his optioneile color. Thus, it may be advantageous to pigment the plastic molding, so that a colored transparent

Plastic molding results. In addition, it can also be advantageous to provide the surface completely or even partially with functional layers. Here you can to the self-cleaning of the discs supporting functional layers, no-drop coatings, no-drip coatings, anti-fogging layers, the

Scratch-sensitive layers, anti-graffiti layers, combinations of one or more of these layers, and many other functional layers already known to those skilled in the art for finishing and equipping the

Think surface. In addition, the plastic molding according to the invention is also particularly static resilient and can thus be used as a supporting or co-bearing element in the construction sector. When installed, the plastic molding is

preferably shear stress stable at a shear stress which is greater than 40 MPa, preferably greater than 50 MPa, more preferably greater than 60 MPa. Here, the stability at shear stress of glass (less than or equal to 30 MPa) is clearly exceeded.

Furthermore, the plastic molding of the invention has relatively low thermal conductivity values.

Preferably, the thermal conductivity is less than 0.30 W / mK, suitably less than or equal to 0.25 W / mK and even more preferably less than or equal to 0.23 W / mK. Again, there are special advantages over glazings made of mineral glass.

The invention also relates to the use of the flat and angular elements described herein

Plastic moldings as corner windows, bay windows or

Facade element.

Preference is given to the use of a transparent or translucent plastic molded article is under protection, which has two disc sections which abut each other so that they form a corner. The term of the corner is understood in the sense of the invention as meaning that it is a real or imaginary point in which two linear sections or their extensions collide. The angle between the two routes can be arbitrary. Also bow shapes (corners with

Roundings) can be considered as corners, if it is valid that the leg sections or their extensions in collide with a crossing point. Corners can thus also have a defined bending or radius of curvature in the sense of the invention.

For the purposes of the use according to the invention, it may be of particular advantage if the two disk edges opposite the corner formation have mechanical connections for coupling further plastic moldings.

Thus, a plastic element according to the invention

be easily installed with other or other elements. In this case, an embodiment is particularly useful in which the plastic molding with

Facade elements can be continued.

The invention will be explained in more detail below with reference to the attached figures.

In the figures show:

1a is a perspective view of a one-part embodiment of a planar,

angled plastic moldings;

FIG. 1b shows a perspective view of a multi-part embodiment of a planar,

angled plastic moldings;

Figures 2a-i schematically in cross-section representations of different variants a - i of the installation and the

Combination of plastic moldings according to the invention (corner windows) with standard windows made of mineral glass and / or block windows made of transparent plastic; 3a shows a cross section through a molded body according to the invention to illustrate the determination of

Transmission values Tl and T2; and

3b shows a cross section through a molded body according to the invention with rounded corners to illustrate the determination of the transmission values Tl and T2 in such an embodiment.

In the figure la is an inventive

To recognize plastic molded body 1. This is in one piece, i. built monolithic. With respect to the edge 4 can be seen a plate section 2 and a

Plate section 3, which together the edge 4 of

Define plastic moldings in. The outside angle

(indicated by the angle symbol) is about 270

while the interior angle (not shown) makes up about 90. Overall, Figure 1a represents one

rectangular corner window arrangement.

In contrast to the one-piece variant of FIG. 1a, a two-piece corner arrangement 1 with a 90 ° corner is shown in FIG. 1b. It can be seen that the two plate sections 2 and 3 are connected to each other, wherein the connection may have been obtained by adhesives or adhesives, not shown in detail but also by hot connection, i. melt and freeze again

Plastic body in the contact area between the

Plate areas 2 and 3.

In the figures 2a-i are different

Possible combinations when installing

Corner window solutions according to the invention with existing Walls, standard windows and block windows made of transparent plastic.

In FIGS. 2a-1, 1 denotes a plastic molding according to the invention in the form of a corner window. With 5 is a wall section (plaster, masonry and

the like). 6 means a block window,

for example, a plastic plate. 7 stands for a standard window made of mineral glass with frame.

According to FIG. 2 a, a corner window according to the invention can be installed over the corner between the corresponding walls / wall sections 5. Just as well as the one-sided attachment to a block window made of plastic 6 is possible, what

The subject of Figure 2b. In question comes the

Combination of the corner window only with one or more plastic windows (block windows 6) which is best seen in Figure 2c.

In the variant illustrated in FIG. 2d, two corner window solutions 1 are combined with one another and then placed between the wall sections. In FIG. 2g, a solution is realized only from combinations of corner windows, while FIG. 2i shows an embodiment of the invention in which two corner solutions installed together are attached to a standard window 7.

Finally, Figures 2e, f and h show different variants of the combination with two standard windows 7 (Figure 2 f) with a standard window 7 and a

Wall section 5 (Figure 2e) and a standard wheel 7 and a block window 6 (Figure 2h). Figures 3a and 3b illustrate the determination of

Measuring sections for the transmissions Tl and T2. The intersection points S1 (outside) and S2 (inside) are determined, and then the transmission is measured along the distance S1-S2. In Figure 3a, the outer imaginary lines are shown slightly removed from the outer wall for better identification. It is understood that the imaginary lines run exactly on the outer wall. FIG. 3b shows an embodiment with rounded corners. The procedure for determining the ratio T1: T2, however, remains unchanged. Tl is measured along an imaginary line through the two intersections Sl and S2. The determination of T2 can be made anywhere on the thickness of the plate.

In curved plate sections occurs in place of the

Extension of the two plate sections the tangent applied to the respective section.

Claims

claims

1. A flat, angled plastic molded body, characterized in that

this consists of at least 2 plate sections, wherein both the inner angle and the outer angle between the plate sections of 180 ° are different, and the plastic molded body through

Cast polymerization is produced.

2. Plastic molding according to claim 1, characterized

characterized in that it consists of poly (meth) acrylate.

3. Plastic molding according to claim 1 or 2, characterized in that it is produced in one piece and after the polymerization to further

Use no longer needs to be deformed.

4. Plastic moldings according to claim 1 or 2, characterized in that the two disc sections are produced as individual elements and then glued together.

5. Plastic molding according to one of claims 1 to

4, characterized in that the two

Plate sections can each be flat or curved independently.

6. Plastic molding according to one of claims 1 to

5, characterized in that the angle a

Arch shape and has a defined radius.

7. Plastic molding according to one of claims 1 to

6, characterized in that the two

Plate sections independently one

Material thickness between 20 mm and 160 mm.

8. Plastic molding according to one of claims 1 to

7, characterized in that the transparency or translucency, determined by the angle, substantially the transparency or translucency of

Disc, determined at any point of

Disc, corresponds.

9. plastic molding according to claim 8, characterized

characterized in that the transmission ratio Tl: T2 is greater than or equal to 0.7, preferably greater than or equal to 0.9, where ΤΊ indicates the transmission, which is measured through the plastic molded body along a distance whose direction is determined by two points of intersection one of the intersections resulting from the imaginary extensions of the substantially planar portions of the outside of the disc elements, and the other of the

Intersections in the same plane as the first

On the other hand, and T2 indicates the transmission measured along the thickness of one of the disks at an arbitrary point

10. Plastic molding according to claim 9, characterized

characterized in that the transmission ratio Tl: T2 is less than or equal to 1.0.

11. Use of a plastic molding according to one of claims 1 to 10 as a corner window, bay or façade element.

12. Use according to claim 11, characterized in that the two disc edges opposite the Eckausbildung have mechanical connections for coupling further plastic moldings.

13. Use according to claim 12, characterized in that the plastic molding can be continued with facade elements.