Glossary//F.A.Q. Textile architecture of MDT-tex

Textile Architecture

What is the principle of lightweight construction?

Lightweight construction describes a design principle which, in contrast to massive construction methods, shows savings in weight, resources and component complexity. In order to realize lightweight constructions, it is necessary to use lighter materials that can keep up with their massive competitors due to their high functionality. The constructions should have the same degree of stability despite the savings in weight and resources. Due to their reduced weight, lightweight constructions offer a potential for energy savings, as they require less energy in production, transport and application. MDT-tex uses the lightweight construction method in the form of textile architecture, in which textile membranes assume a load-bearing function and constitute an essential component of the constructions.

What is textile architecture?

Textile architecture is a variant of lightweight construction in which textiles play a decisive role. In order to reduce weight, textiles are used that are significantly lighter than solid building materials such as wood, steel, stone and glass. Textile membranes are mainly used in connection with support systems made of ropes or supporting structures made of solid building materials. In general, textile architecture is all about finding lightweight solutions that combine optimum statics, high functionality and an extraordinary appearance. MDT-tex uses textile architecture to create open, weather-protected rooms outdoors or to clad solid buildings with textile facades.

What is membrane construction?

Membrane structures are lightweight flat supporting structures used in membranes to create rooms or cover facades. In general, materials which are extremely thin in relation to their length and width are used for flat supporting structures. The membrane construction additionally benefits from the flexibility of the membrane materials, which are extremely adaptable in their shape. Due to their thickness and flexibility, however, membranes can only be loaded in the surface axes and only in the tensile direction as a load-bearing building material. The support systems of the membrane structures apply a preload to the membrane and due to the high strength of the membrane materials they can absorb additional loads such as wind pressure or snow. MDT-tex uses the membrane construction method to create a sun and weather protection for façade or parasol constructions.

Support systems

In general, the carrier systems in membrane construction serve as a substructure and form the edges and corners into which the membrane is clamped as a filling surface. MDT-tex understands the carrier system both as a tension construction for the membrane and as an optical component of textile architecture. Frames, supports and ropes are therefore made of powder-coated aluminium or stainless steel and can be supplied in different colours depending on the model. The stability and strength of the support system is just as important for the resistance and service life of the construction as that of the membrane itself.

What is a membrane?

The term "membrane" originates from the Latin "membrana", which means skin. Textile architecture also uses this term for tensioned, flexible surfaces, because they form the protective skin of the construction. Flexible textiles or foils are usually used for the membrane materials. Textiles in particular have an extremely high strength in relation to their low surface weight and can thus withstand the high demands of outdoor areas. MDT-tex only uses coated fabrics for its textile membranes. These are extremely resistant due to their high strength and low elongation and can also be used in foldable constructions due to their flexibility and resistance to buckling. However, more elastic fabrics or foil membranes can also be used, depending on customer requirements.

Form finding and statics

In contrast to classic solid structures, the shape of the membrane construction cannot be freely chosen. Membrane statics play a major role in form finding and always determine the feasibility of a particular design. Due to the flexibility of the membrane, the design language of textile architecture is mostly fluid and organic. The forms strive for the minimal surface principle, which has been adopted from the nature of self-forming materials such as soap bubbles. This principle enables an optimal distribution of forces in the construction and also ensures a flowing and dynamic design. Today, the statics of the forms are calculated with the least amount of material using 3-dimensional computer models. In addition to the geometric surface shapes of classic parasols, MDT-tex now also works with double-curved surfaces for tulip parasols and façade constructions, in which form finding plays an immense role.

What is membrane load?

For the static calculation and form finding of the construction, the loads of the membrane must always be taken into account. In addition to the dead weight of the membrane, external loads also play a role here. These external loads can occur in the form of wind pressure and snow and precipitation loads. The strength of the membrane should therefore be at least 5 times the preload force in order to withstand the additional loads.

Membrane materials

What are technical textiles?

When used for exterior membrane constructions, textiles must have a high degree of functionality. The applied pretension, as well as the additional wind and snow loads, require a high degree of strength. The appearance is usually of secondary importance here, which is why the membranes are made of technical textiles, usually woven with a coating or impregnation. Technical fabrics have optimal mechanical properties for use in membrane constructions due to their solid base material and their processing. An additional coating creates the membrane material, which then exhibits a high degree of resistance to environmental influences such as chemicals, moisture and solar radiation.

What does the base fabric look like?

The fabric is made up of warp and weft thread systems that cross at right angles and according to pattern. The cohesion and the pattern of the fabric are determined by the weave, which determines the position of the respective thread at the crossing points. In general, they are characterised by their high strength and extremely low elongation. The fabrics used by MDT are made of polyester, acrylic or PTFE and usually have a simple and strong basic weave. The fabric gives the MDT membrane its strength and dimensional stability.

What is the difference between a coating and an impregnation?

Coatings or impregnations are applied to the base fabrics to improve their functionality. The difference between the types of application is as follows. Impregnations penetrate the fabric and then sit between and on the fibres. An impregnation improves the fabric properties without having a significant influence on the haptics and appearance. Coatings, on the other hand, are applied as a second layer to the fabric surface and remain there. As a result, the coating takes away the roughness of the textile and produces a smooth, foil-like surface. Depending on the material applied, the fabric becomes waterproof, self-cleaning and weather-resistant and can withstand the harsh outdoor conditions. In addition, the burning behaviour of the textile can be improved to make it suitable for use in public areas. An overview of the materials used by MDT-tex can be found under "Which material should I choose?

 Which material should I choose?

The choice of material always depends on the objective requirements, such as size, location and screen model, but also on the subjective requirements of the customer, i.e. colour, optics and price. For coloured membranes and a long colour stability the MDT-tex 300 Acrylic should be chosen. This Va-riante offers a constant optics for years, for a small surcharge. If you want to apply a large print to the fabric, the MDT-tex 260FR can be used, which can also be printed with large, colourful print motifs in its raw-white state and then later receives a flame-retardant coating. Choose our MDT-tex PTFE for an extremely long service life and low maintenance. For large constructions we recommend MDT-tex 480 Precontraint, MDT-tex 680 PVC or MDT-tex PTFE. They all have a high strength and are ideal for outdoor use. Each of our diaphragms fulfils its own purpose. Find out which material suits your property by taking a look at the descriptions below or contact our well-trained staff for more information.

MDT-tex 260FR

MDT-tex 260 FR is a raw white polyester fabric with a polyurethane coating that contains dyes to give the fabric its colour. Po lyester fibres have high strength and excellent recovery properties and are therefore well suited for foldable membrane constructions. The coating with polyurethane reduces the soiling of the membrane and also influences properties such as fire behaviour, colour fastness and resistance to microorganisms. In its raw-white version, the fabric can be printed in ink-jet digital printing and then coated colourless. The MDT-tex 260FR is the cheapest variant of the MDT-tex membrane textiles. However, due to its colouring in the coating, it has a less consistent colour fastness and brilliance than, for example, the MDT-tex 300 Acrylic.

MDT-tex 300 Acrylic

The MDT-tex 300 acrylic is a fabric made of polyacrylic fibres which have already been dyed in the spinning process and then processed into fibre yarns. The fabric is subsequently treated with a special impregnation to make it waterproof and dirt-resistant. This material impresses above all with its colour fastness and in-tensive dyeing, as the dyes are contained in the fibres and are protected by the acrylic. In addition, the fabric has a very textile surface structure and is very similar to natural fibres. However, MDT-tex 300 Acrylic should mainly be used for small constructions, as the membrane load would otherwise be too high and the strength of this material would not be sufficient.

MDT-tex 480 PVC, MDT-tex 680 PVC

The MDT-tex 480 and 680 are polyester base fabrics with a PVC coating in various application thicknesses. The polyester fabric has excellent mechanical properties and, in combination with the PVC coating, is very suitable for use in large membrane constructions. The PVC coatings increase the resistance of the membrane and give the material its colour. Due to the coating, the polyester fabric loses its textile appearance and the material appears smooth and foil-like. In addition, the coating leads to a high water column of the materials, as the pores of the fabric are completely sealed. The coating gives the material a B1 fire protection classification. The MDT-tex 680 PVC stands out from the MDT-tex 480 PVC mainly due to its higher weight and the resulting higher strength. MDT-tex is aware of the PVC environmental problem and is trying to replace these materials with an appropriate alternative in the future.

MDT-tex PTFE 300, 450, 700

The MDT-tex PTFE is a membrane made of PTFE fibres combined with a one-sided fluorine coating, which gives the fabric a higher water column and an improved self-cleaning effect. Due to their polymer structure, PTFE fibers are very strong and are hardly affected by UV radiation and chemicals. They therefore have a very long service life and can also be used for large constructions and rigid structures that can be found outdoors all year round. The high durability of the material, however, goes hand in hand with the fact that it can hardly be dyed and cannot be printed. This is why MDT-tex offers the material exclusively in the colours white and beige. PTFE is flame retardant and B1 certified, which makes it very suitable for use in the public sector. Due to the high temperature resistance of PTFE, it can also be used in climatically extreme regions where other materials are already breaking down. Altogether PTFE offers a perfect, but price-intensive alternative to simple PVC membranes.

What is a mesh fabric?

Mesh fabrics are open mesh fabrics with clear distances between the individual warp and weft threads. They are produced using a special technique in which a third thread system rotates around the crossing points of warp and weft and fixes them. After an additional Vi-nyl chloride coating, a high shear strength can be guaranteed despite the open fabric structure. MDT-tex uses these special fabrics in order to protect the opening of the screen mast for the water drain from coarse impurities. The mesh fabric is therefore used almost exclusively for foldable and rigid tulip umbrella constructions, as well as for the upper membrane of the double diaphragm umbrellas.

Properties of the membrane materials

What does 260, 300 or 680 mean?

The 300 stands for 300g/m² for MDT-tex materials. This is the weight per unit area of the membrane. In other words, the mass of the material in its unprocessed state. This weight represents the basic standard for the membrane loads and affects the applied preload force.

What does the strength say?

The material and the processing in the fabric are decisive for the strength of a membrane. However, the mechanical properties of the applied coating can have an additional effect on the strength of the membrane. The mechanical behaviour of textiles is measured with the tensile force test according to the DIN EN ISO 13934-1 standard. Here textile strips with a width of 5 cm and a length of 20 cm are placed between two clamps and then stretched by a predetermined force until they break. Above all, it is important that the fabrics be tested both in warp and weft direction, as these values usually differ from one another. The results of the tensile strength test are the strength of the fabric (in N/5cm) and the elongation (in %), which should be as low as possible for textiles used for membrane constructions.

What does the water column say?

The water column describes the property of clothing, building materials or other materials to form a perfect barrier between water and the object behind it. Since impermeability cannot be increased, but a material is either impermeable or leaky, it depends on the water pressure under which the material is still considered to be impermeable or already permeable. At which pressure the fabric is still definitely waterproof is given by the value of the water column (in mm). This can be taken as the water level above the membrane surface at which the membrane remains watertight. If we assume that our material has a water column of 350mm, the water level on the membrane can be a height of 35cm above the surface. In general, textiles with a water column of 1300mm are considered waterproof, but membranes with low values can still be used, as both the gradient and the curvature of membrane constructions drain off the water and the water level thus usually remains below a value of 1300mm.

Why is UV protection so important outdoors?

The membranes guarantee a certain degree of UV protection for the shaded areas. Ultraviolet rays are the wavelengths of light that are less than 390nm, which is less than the range visible to the human eye. The UV rays hit our skin with the sun's rays and have both a positive and negative effect. On the one hand, the UV radiation stimulates the Vita-min D production of our body, but with too long and intensive irradiation it can cause considerable damage to our eyes and skin. Nevertheless, we would like to spend time outside during the warm seasons without risking sunburn. Sun protection systems, such as the sunshade or awning, protect against harmful radiation and allow us to be outdoors even in warm climates. The membranes are therefore always marked with a certain degree of UV protection, which can lead to a radiolucency of less than 5%.

Why can a self-cleaning effect be advantageous?

Since the membrane materials used are constantly exposed to the harsh weather conditions, a low soiling of their surface is very important. Pollen, dust or vegetabilia are easily deposited on the membrane and can lead to unattractive soiling. Oil stains in particular can usually only be removed from the material by washing, as they adhere relatively strongly to the fibre surfaces. Certain coatings or films, such as PVC, can help here, as they create a smoother surface and the dirt has a smaller adhesion surface on the membrane. This effect is achieved with MDT480 PVC and MDT680 PVC. Other materials, on the other hand, have a low soilability due to their fibre polymers. This is usually associated with the so-called self-cleaning effect. The fabrics or coatings have a very low coefficient of friction. Water molecules cannot find a hold on the surface and slide off. While the water droplets roll off the membrane, they take dust and dirt from the surface with them and clean the membrane without additional mechanical effort. Membranes with a self-cleaning effect, such as MDT-tex PTFE, are an excellent solution for low maintenance.

What effect does UV radiation have on the membrane?

The aggressive UV radiation does not only have an effect on our skin. The membrane materials are also attacked by UV rays, depending on the fibre material used and the coating or impregnation. This also affects the dyes that give the membranes the desired colour. The UV rays increase the energy in the dye molecule and ensure that these chemical compounds with the oxygen enter from the air and lose their molecular structure. This inevitably leads to fading of the colour. The resistance of the colour to UV radiation is also called light fastness. The higher the light fastness, the longer the original colour of the membrane is retained. The light fastness of the colouring is tested by artificial exposure of a xenon lamp according to the standard DIN EN ISO 105-B02 and evaluated with grades 1-8 (8=excellent). Light fastness, for example, can be improved by incorporating the colour molecules in the fibre. This is the case with MDT-tex 300 Acrylic. However, UV radiation also has an effect on the fibre polymers, since many fibre polymers whose binding electrons react with oxygen through UV radiation disintegrate into smaller molecules. In the long run, the membranes become brittle and lose their strength. This can be remedied by UV blockers or UV-resistant polymers such as PTFE.

What effect do wrinkles have on the membrane?

Collapsibility or buckling resistance describes the resistance of the membrane to bending stresses and buckled wrinkles. Since folds occur again and again when the foldable screen constructions are closed and, above all, when the membrane is secured by the webbing, a certain resistance to buckling of the material is a prerequisite for a long service life of the construction. However, this is particularly important with glass fibre membranes, as the brittle fibres break during too frequent and prolonged bending cycles. The membrane materials used by MDT-tex are exclusively plastic-based and therefore have a higher flexibility and resistance to buckling than glass fibres. For this reason, the membranes used by MDT-tex are sufficiently foldable.

What does B1 mean?

Textiles and membranes can be classified into different building material classes according to their flammability and fire behaviour. This is done according to the DIN 4102 standard according to German law and is structured as follows: Building material class Flammability Comment A1 Non-combustible No smoke or burning dripping/dropping of material Contains no or hardly any combustible material Example: Concrete, sand and gravel A2 Non-combustible No smoke or burning dripping/dropping of material Building material contains only small amounts of combustible material Example: Concrete, sand and gravel A2 Non-combustible No smoke or burning dripping/dropping of material Contains only a small amount of combustible material Gypsum plasterboard with closed surface B1 Flame retardant Partial smoke or burning drip/waste Building material definitely does not burn when the source of the fire is removed According to example: MDT polyester, MDT PVC and MDT PTFE B2 Normal flammable Partial smoke or burning drip/waste Building material burns when the source of the fire is removed According to building material: wood, textile floor coverings etc. B3 Highly flammable Smoke and burning drip/waste Not to be used in architecture without fire retardant measures Building material: paper, straw and foam plastics.

Textile processing

How do we put your logo on the membrane?

In addition to the coating, a coloured imprint can also be applied to the fabric. MDT-tex imprints are used to personalize or close advertising space on the membrane construction. In printing, the surface of the membrane is partially dyed before or after coating using various techniques in order to print patterns or logos. MDT-tex offers digital printing, screen printing and through-printing to apply the desired motif to the membrane.

What happens with flat screen printing?

In screen printing, the printing paste is pressed through screens made of flat film stencils and applied to the textile at the desired points. The screen stencils consist of a light gauze fabric and a photoactive coating, which remains on the fabric surface by UV radiation. By applying a print motif, the adhesion of the coating to certain areas can be avoided. At these points the coating is washed off later and a screen is created. A separate screen must be created for each colour component and no colour gradients are possible. The stencils are clamped in a printing machine above the fabric to be printed and placed on the fabric during the printing process. With the help of a rubber squeegee, the printing paste is spread over the screen and pressed onto the fabric at the permeable points of the gauze. Screen printing can be carried out on coated, impregnated and coloured fabrics.

What happens during printing?

The through-printing process is a form of the screen printing process in which the colour is pressed through the fabric and can thus also be seen on the reverse side of the membrane. This process can only be carried out on permeable materials without coating. MDT-tex therefore does not offer the process for every membrane material.

What happens with digital printing?

MDT-tex uses digital inkjet printing. Here special textile dyes are applied to the textile similar to the principle of a paper printer. An ink jet transfers the dyes drop by drop onto the textile and can thus print continuously over a large area. The colours are mixed directly in the printer from several basic colours. Therefore, no special colours in the form of neon or gold are possible. In digital printing, MDT-tex prints raw white polyester fabrics, which are then coated with polyurethane or acrylate. This serves to protect the print motif and to improve the fabric properties. Pigment dyes and dispersion dyes are used for digital printing.

What are pigment dyes?

Pigments are tiny, insoluble particles that are not dissolved in the printing paste but finely distributed. They themselves hardly interact with the textile surface and are bonded to the fabric via a binder. Pigment prints therefore sit on the material surface and do not penetrate into the fiber, which leads to a harder grip on the printed areas. Pigment prints, however, are usually very opaque and have good colour fastness. MDT-tex uses pigment dyes in screen printing as well as in digital printing.

What are dispersion dyes?

Disperse dyes are particularly suitable for dyeing polyester fibers and are therefore partly used for MDT- tex 260FR. Polyester polymers are nonpolar molecules, which is why the also nonpolar dyestuffs adhere well to the fiber surface. By additionally heating the fabric after applying the dye, the fibres soften slightly and allow the dye molecules to diffuse into the fibre. The subsequent cooling causes the molecular chains of the fibres to solidify again and enclose the colour molecules. Disperse dyes thus penetrate into the fabric and do not change the handle of the fabric. Disperse dyes make through-printing possible.

When is which printing process used?

Which printing method is used depends on the material used, the motif and the amount of motif applied. Parameters Screen printing Inkjet digital printing MDT-tex 260 FR coated X MDT-tex 260 FR uncoated (raw-white) X X MDT-tex 300 Acryl X MDT-tex 480 & 680 X MDT-tex PTFE Large application quantity X X Small application quantity X Print repeat < 4m X X Print repeat > 4m X Special colours X Through print X Pigment dyes X X Disperse dyes X

The MDT-tex inkjet printer only prints raw white polyester goods, which are then given a transparent coating. All other membrane materials are printed using the screen printing process, as this provides more opacity and adhesive strength on the sometimes very smooth membranes. PTFE membranes cannot be printed because they do not bond with the dyestuffs or the binding agents. Screen printing production is usually only worthwhile for large print jobs, as screen production is costly and once produced, screens cannot be used for other print motifs. Digital printing is also suitable for smaller run lengths as no screen production is necessary. In addition, the size of the print is unlimited here, while in the screen printing of MDT-tex maxi times 4m wide motifs are printed. In digital printing colour gradients can be re-alized, but no special colours can be mixed. In screen printing this is exactly the other way round. In principle, almost any customer request can be fulfilled using these printing processes and colours. Please contact us for a detailed consultation.

How are the textiles made into membranes?

The production, i.e. the cutting of the membrane segments to size and the sewing of the membrane is also referred to as the assembly. The cut parts are cut out of the long material webs by MDT-tex employees by hand or with a digital cutter using stencils and so-called impact knife machines. In the sewing process, the segments are then joined using different seams. Depending on the type of screen and the desired look, flaps, eyelets and hem tapes are attached. Tabs and eyelets can be attached to the carrier system to allow the membrane to be tensioned. Hem bands visually close off the membrane and give the flounces a higher quality look.

Why is my new peak leaking at the seams?

With umbrellas whose individual segments are connected by seams, water permeability can occur at these connection points, especially during the first outdoor use. This is due to the fact that the needle, which is pierced through the membrane, connects the different membrane components via the sewing thread. Holes are made in the membrane which are necessarily larger than the sewing thread itself. As a result, the sewing thread does not completely fill the puncture hole and water can penetrate through the seams. However, this problem will subside after some time, as the seams will be clogged by dust or other deposits. So the membrane becomes waterproof after a short time. This effect can be avoided by other joining processes, such as textile welding of thermoplastic materials.

Sun and weather protection systems

Sun protection system and weather protection system

In addition to the optical effect, textile architecture always offers functional added value. In most cases, it protects us from sunlight, rain or other weather conditions. Membrane constructions which are primarily dedicated to weather protection, i.e. to providing shade and protection against precipitation, can therefore be described as sun or weather protection systems. MDT uses this term especially in the context of individual and composite solutions consisting of several optically connected constructions. The constructions can be foldable or rigid, mobile or fixed umbrella or sail constructions. Even a single sunshade can be a sun protection system.

Parasols (Umbrellas)

The classic large parasol is a frame made of solid materials, such as wood and metal, which stretches over struts a textile membrane to protect against sunlight and weather conditions. But besides the pure protective function, the umbrella has also proven itself as an advertising medium and MDT has also made more and more additional functions possible in recent years. In addition, the design has moved away from classic geometric screen sides towards curved membrane surfaces and new shapes. In the following all foldable umbrella designs of the company MDT-tex are presented and explained in detail.

Which shade should I choose?

In order to make the decision for an umbrella a little easier for you, you will find below all types of umbrellas from MDT-tex together with a short description. For more detailed information, please contact our staff, who will be happy to help you make the right choice.

Telelight Umbrella | Type G

The umbrella type G follows a classic umbrella design and is available in both a round and a square version. Type G is a light model which can also be used for mobile use and is therefore perfectly suited for seasonal use. The special feature of the design is above all the small membrane cap, which covers the mast end of the screen. The type G was improved by MDT-tex again and again after the customer's requests, the predecessor models G07 and G09 are however also still in the assortment. The umbrella type captivates by its simplicity and is normally not supplemented by lighting or heating elements. The shade is available square and rectangular in the sizes 3x3m, 3x4m and 4x4m. Round, however, with diameters of 3m and 4m. The umbrella is opened on all models with a clamping handle on the umbrella pole. The current model, the type G15 is a full aluminium umbrella, whereas the other models still partly contain plastic parts. We recommend a MDT-tex 260FR diaphragm for this type of glider. This membrane keeps the price of the glider at a comfortable level, can be printed very well and is also flame retardant. The umbrella can be anchored either mobile with a cross, frame or steel plate stand for a possible relocation of the umbrella during the day, or firmly with a ground sleeve. The umbrella is ideal for your advertising purposes at gastro-nomy or leisure objects.

Tension parasol | Type S, Type S07, Type S16

The tension umbrella type S has a classic umbrella design. Its special feature lies above all in its easy handling. Due to its simple elegance, it does not appear overloaded even in connection with the use of light, sound and heating technologies. The type S is available in the standard sizes 3x3m, 3x4m and 4x4m and round with a diameter of 3m or 4m. From the type S the following models type S07 and type S16 were developed, which are produced in the sizes 2,5x2,5m, 3x3m and 3,5x3,5m and round with a diameter of 4m. With the Type S, the umbrella can be easily tensioned via aluminium handles on both sides of the umbrella pole. The handles are pulled downwards and the struts unfold upwards. Type S07/S16, on the other hand, is opened via an aluminium handle on the strut ring. Not only the clamping mechanism is different here, but also the frame has changed, as these types have two struts to ensure even more stability. Type S07 and S16 differ only in their frame construction, as the S07 has a much lower angle of inclination and therefore a much flatter appearance. All three models have high-quality aluminium frames, which can be coated in various colours. MDT-tex recommends a MDT-tex 260FR or MDT-tex 300 acrylic membrane, which can be printed using various printing processes to convey advertising messages. The type S can be permanently installed over ground anchors or sta-bilised over frame or steel plate stands, which allows the umbrella to be relocated. The Type S series is very easy to operate thanks to its simple tensioning mechanisms and fits into any ambience thanks to its simple but high-quality appearance. That is why this model is very popular for gastronomy objects and hotel complexes.

Telescopic Umbrella | Type T, Type TS, Type TXXL

The telescopic umbrella type T has a classic umbrella design and is available both round and square. The type T is a particularly versatile umbrella, which is also available in a storm-proof variant type TS. Due to its simple elegance, it does not appear overloaded even in conjunction with lighting, sound and heating technologies. Type T is available in square sizes 4x4m, 5x5m and 6x6m, rectangular sizes 4x5m and 5x6m and round sizes 5m and 6m in diameter. In contrast to the tension screen, the type T is opened via a removable hand crank. With the type T XXL MDT-tex also offers special formats up to a size of 10x10m or a diameter of 14m or 16m. MDT-tex manufactures its telescopic umbrella frames from aluminium. As a storm-proof model, the TS type has a thicker mast and can therefore withstand wind speeds of up to 80 km/h. The telescopic umbrella frames are made of aluminium. Therefore, it can also be used in exposed locations with high wind loads. The membrane material type T can be selected from all materials offered by MDT-tex. However, we will be happy to advise you on the type T XXL in order to find the optimum membrane with sufficient strength and durability. The type T can be anchored mobile with a frame stand, or also firmly with a ground sleeve. Type TS and T XXL can only be anchored with ground sockets due to their higher stability. Type T is an umbrella for any location and the wind-resistant version can also be used in exposed locations. Type T XXL, on the other hand, can be used above all when strict building permits and specifications make a fixed sunshade system almost impossible.

Design models

Keder rail parasol | Type TK

The type TK is a modified, special form of the type T series. The special feature here, however, is the piping rail struts. The number of struts is increased and the struts are also visible from the top of the screen, as the membrane is anchored in the struts and not stretched over them. This also makes it possible to replace the individual membrane segments. The screen design can be supplemented by additional lighting. Type TK is available with side lengths of 4m, 5m, 6m and 7m or with a diameter of 5m, 6m, 7m or 8m. Type TK can be easily opened or closed with a removable hand crank. The frame of the umbrella is made of powder-coated aluminium. Here you can get individual advice to choose from our membrane collection. This umbrella is firmly anchored with a foundation construction at your desired location. The type TK offers a very special look and is versatile. It is also a particularly windproof model and can also be used excellently in exposed, windy locations. Its elegant design, however, makes it a solution for every catering and hotel object.

Side arm umbrella | Type SA, Type SA Home

The side arm umbrella is a special type of umbrella in which the mast is moved from the centre of the umbrella to the side. The membrane structure follows a classic design, but is supported from the side instead of from below. This ensures a high ground clearance under the screen. In addition, the shade can be optically enhanced by additional effects such as LED lighting. The shade is simply opened or closed via a removable hand crank. It is available rectangular or square in the sizes 3x3m, 4x4m, 5x5m and 3x4m, 4x5m. The umbrella has an aluminium frame which can be powder-coated in white, black or silver. The umbrella pole of the standard type SA has an oval shape to ensure more stability, while the type SA Home has a round pole. This umbrella is only available in size 3x3. We recommend the MDT-tex 260FR or MDT-tex 300 acrylic membranes for this type of screen, as they are sufficient for the sizes offered. Other membrane types can also be used for special requirements. You can find more information about the membranes under Membrane materials or simply contact us. The screen should be anchored in the ground, ground sleeves or a core bore with piercing sleeve are possible. The types SA and SA Home are ideally suited for objects that require a high ground clearance, as the mast no longer forms the centre of the screen. Gastronomy objects or hotels can use the space here ideally for seating without affecting the sociability of the round with a mast.

Wooden umbrella | Type H

The wooden umbrella has a particularly high-quality, almost nostalgic appearance. The eucalyptus wood frame enhances every location and creates an elegant atmosphere. This umbrella can be taken along everywhere by a transport or event case. A protective cover with telescopic rod can protect the membrane during transport and unwanted contamination is avoided. The wooden umbrella type H is available in the sizes 2x2m and 3x3m and can also be produced round with the diameter 2.5m, 3m and 4m for you. The glider can be opened easily with a pulley block. The struts and turned parts of the umbrella are made of eucalyptus wood and are polished, sanded and rounded off on the sides. The glider can be easily and mobile anchored to the floor by means of a concrete stand. It is ideal for creating a nostalgic atmosphere and can be used for catering objects as well as for special occasions.

Tulip umbrellas (type E/EH/Exxl)

The tulip umbrella is a design model specially developed by MDT-tex whose shape was derived from nature. The membrane resembles an upward flower and its surfaces form a kind of funnel due to their curvature. The screen struts are not visible from below when stretched over the membrane. The special feature of the tulip umbrella is not only its appearance, but above all its functionality. Rainwater can be collected and drained between the plexiglass cover and the umbrella mast by the upward directed flower form. Depending on the anchoring of the umbrella, the water can now be drained into the ground by means of drainage or, in the mobile version, drained off in the upper Irish direction. In addition to water drainage, the screen can also be equipped with Smart Systems, such as a water filtration system. In addition, the tulip umbrellas can be individually designed with effects such as lighting, scent emission or printing on the membrane, thus creating an extraordinary ambience for every location.

The standard model of the tulip umbrella, type E, becomes square, available in sizes 4x4m, 5x5m and 6x6m and round with diameters of 4m, 5m and 6m. Type E can be opened or closed with a removable hand crank. MDT-tex also offers the Type E Home series for smaller external surfaces. Here the umbrella is available in the sizes 2.5x2.5m or 3x3m and can be opened using two-part aluminium handles guided on the umbrella. The type E XXL can be used for size dimensions that are to exceed those of the standard model. These special sizes are opened and closed via a hand crank or optionally also via electric motors. The tulip umbrella has an aluminium frame with a plexiglass cover that surrounds the umbrella mast and makes water drainage possible. MDT-tex offers various materials as membrane cloths. Let us advise you individually to make a choice between MDT260 FR, MDT480 Precontraint or MDT680 PVC. The tulip umbrellas can be installed as a mobile solution, with an umbrella stand or as a fixed construction with a foundation.

This special design umbrella can be used for various locations and events. Its special design creates a very special ambience and represents the perfect alternative to the classic parasol. Due to the wide spectrum of different span widths, the tulip umbrella can be used in small gardens at home or in large public places. The individual design with light effects and printable membranes make the tulip umbrella the perfect brand ambassador for your catering object or trade fair event.

Double membrane parasol | Type AV, Type AV Home

The type AV is a very special umbrella model, with a double membrane for a special look. The membranes create a cushion-shaped, light appearance and the screen is highly functional due to internal lighting and a water drain into the floor. The upper membrane consists of a water-permeable mesh fabric, which is why the lower membrane catches the water and drains it into the floor. The chromed mast is kept very dark so that the membrane looks like a floating air cushion at night due to the interior lighting. The type AV is available in the sizes 3x3m, 4x4m and 5x5, while the smaller type AV Home is only available in a size of 3x3m. The type AV is opened with a crank handle, whereas the type AV Home can be easily clamped with aluminium handles. Mesh fabric is used on the upper membrane, but for the underside we recommend the MTD-tex 480 Precontraint for the AV Home, but MDT-tex 260FR is usually sufficient. The umbrella frame is largely made of aluminium and ensures high stability of the umbrella. Both types of umbrellas can be mounted mobile via a frame or steel plate stand or fixed via a base sleeve. A folding adapter is also possible for type AV. Due to the double membrane and the interior lighting, the umbrella is an absolute eye-catcher for events and public places, by day as well as by night.

Tensilation | Type EV

The tensilation construction consists of any number of individual shield modules. These shield modules are oriented upwards in their design, similar to the tulip shield, and are available in both a square and a diamond-shaped ground plan. Both basic shapes can be freely combined in a modular system. This design was first developed and realised in cooperation between MDT-tex and the architects of GRIMSHAW. The umbrellas are connected to each other via membrane connectors and thus form an integral roof. The Tensilation modules are connected statically not only via the membrane, but also via the aluminium scaffolding. This means that the more modules are combined with each other, the more stable and windproof the whole system becomes. The central masts of the individual modules also drain the water, similar to the tulip umbrella.

The type EV is available in both square and diamond form, with side lengths of 4m. The individual modules are opened via a coated polyester rope, which is secured by an automatically closing chamber. After opening, the pull rope is conveniently stowed in the mast. With a weight of less than 30kg, the frame of type EV is very light and can be assembled by 3 fitters within one minute per square meter. The system's covering consists of a double membrane on each module and connectors between the modules. The upper membrane of the module consists of a mesh fabric (see mesh fabric), which protects the lower membrane and the water drain from coarse contamination. The MDT260FR serves as the lower membrane, which can act as a brand ambassador by means of personalised imprints. The connecting pieces are made of polyester with a PVDF coating in order to connect the membranes of the individual modules without gaps. The support column of the module can be made by permanently installed ground anchors. For mobile event applications, however, a special, height-adjustable steel floor system can also be used to ensure perfect positioning of the modules. The system can also be freely designed with a choice of surface claddings.

Due to the fast assembly and the effective design, the type EV Tensila-tion are particularly interesting for events, trade fairs or outdoor celebrations. By means of a personal imprint on the membrane, an additional message in the form of logos and pictures can be displayed on the screen. Due to the seamless connection between the modules, even extensive areas can be covered and open spaces can be created outside.

Rigid constructions (Parasols)

Shade Structure | Type SHT, Type SHP

MDT offers foldable shade constructions as well as fixed and rigid shade structures. These membrane constructions are intended for permanent outdoor use and cannot be closed. These are offered in tulip form, similar to type E or pagoda form. The pagoda shape has an inverted tulip shape. Both the frame and the membrane of these constructions are very weather resistant and due to their stability also resistant to snow and water loads. Due to its upwardly directed flower shape, the tulip shape SHT can collect rainwater and drain it into the ground or pass it on above ground. In addition to water drainage, additional functions such as Smart Systems or design elements can complement the construction. Effects such as prints or lighting can be used to make the Shade Structure even more individual. The tulip constructions are available in sizes between 3-5m side length or 3-6m diameter. Our pagoda is available in a side length or a diameter of 3-5m. The frame of this model is made of steel due to the year-round loads and the struts are additionally secured with high-strength steel cables. The recommended membrane material is MDT-tex 480 Precontraint or MDT-tex 680 PVC. The construction is firmly anchored in the ground by means of a foundation. Our Shade Structures are ideal for large structures that need to be roofed all year round without requiring much maintenance. In addition, their special design makes them an excellent alternative to classic, functional roofs. Due to their high wind resistance, they are also ideal for exposed, windy locations in mountainous or coastal regions.

Shieldable | Type GC, Type UB

The umbrella bar represents a pavilion which is made of one umbrella, but due to its fixed side walls and the floor construction offers a wind-proof event possibility. The umbrella bar is best known as an après-ski event loca-tion and plays out its advantages as a temporary construction. The umbrella bar can be adapted to your individual needs with additional effects such as lighting, radiant heaters or loudspeakers. The type Gastrokonzepte GC is available in side lengths of 4m, 5m, 6m and 7m. Everything that goes beyond that is offered as screen bar type UB. This is also produced with up to 16m in diameter by MDT-tex. The frame of the type GC umbrellas consists of aluminium and the floor construction of a steel frame with insertable floor panels. For this type of umbrella, MDT-tex 260FR, MDT-tex 300 Acryl or MDT-tex 680 PVC can be used. MDT-tex 680 PVC is particularly suitable for extreme weather conditions. Type UB is also made of aluminium, but has a floor construction consisting of a base frame and adapter. The middle plate is hot-dip galvanised and consists of a single frame with intermediate reinforcement. In this case, we recommend MDT-tex 680 PVC as the membrane cloth in order to guarantee optimum stability even with large constructions.

Tent

The tent is a real eye-catcher with its arched shape, which is held by several supports. Within shortest time MDT-tex made this construction for the summer festival of the president of the Bundestag and created an open, light and comfortable venue. The large span makes the tent a perfect venue for events and ceremonies. It can be manufactured in the sizes 36x7.5m and 30x7.5m. The membrane is stretched over a ridge arch and a construction made of DIN ropes, tension anchors and ground nails. The MDT-tex 480 Precontraint is recommended as the membrane cloth for this large construction. The membrane sheets are welded together to ensure optimum watertightness and strength. The tent is anchored via a steel frame construction, which is provided with floor panels. The ground nails provide additional support. As already mentioned, the tent is the perfect temporary location for open-air events, somersaults or ceremonies.

What can I imagine a Smart System to be?

Smart Systems developed MDT mainly in connection with the tulip-shaped membrane structures. These are additional products in the form of design and functional elements. Besides a visually appealing and extremely practical seat cube made of eucalyptus, the umbrella can also be supplemented by a table top or a terrace floor. In order to generate added value from the designer umbrella, it is also possible to install filter systems in the water drain. Thus, rainwater can be used to regenerate drinking water and to spit it out again. In addition, a mobile, plant-covered wall can not only create an extraordinary ambience, but can also be used for a variety of applications.

facade systems

What are textile facade systems?

Textile facade systems are an innovative form of facade cladding. Here, membrane constructions are attached to the building facade or between two buildings to meet both optical and functional requirements. In addition to cladding a less attractive, bare façade, sun protection and privacy can also be created for the rooms behind. The membranes create a diffuse light and therefore there is no need for an additional sun visor inside or outside. However, façade elements also achieve energy savings, as they provide a certain insulating effect upstream of the building envelope. This leads to lower heating costs in winter and less air conditioning in summer. Placed between two building envelopes, the textile façade constructions can also create roofing for passageways and visually connect two buildings with each other. Textile facade constructions prove themselves above all due to their low weight, their quick installation even when retrofitted and their very special, versatile design possibilities. MDT-tex also offers individually designed textile facade systems due to its high vertical range of manufacture. Talk to our employees to find a solution that is perfectly tailored to your object.

Cirrus systems

The Cirrus system is a textile façade system specially developed by MDT-tex in cooperation with the architects of UNStudios. Here, aluminium panels are assembled using stainless steel leakage elements according to a modular system to produce individually adapted façade claddings or pavilions. The aluminium surrounding panels are supplemented with textile membranes in flowing forms to form a closed yet open shell. The clamped membranes are high-quality MDT-tex PTFE fabrics which offer high weather resistance and dirt repellency. The Cirrus systems therefore represent an ideal solution for extremely robust and durable façade elements which nevertheless have a high design standard. The construction is specially adapted to the façade to be enclosed in order to maintain the characteristics and individuality of the building or to create new forms. The Cirrus system could already be admired at the Amsterdam Light Festival in cooperation with UNStudios and at TechTextil in Frankfurt am Main. You can find more information under references on our website.

Solar systems

Textile & Solar how does it work?

MDT-tex solar systems are movable and rigid membrane constructions with integrated photovoltaic panels. These panels produce solar power that can be fed directly into the grid or stored on batteries, depending on the customer's requirements. Additional systems such as USB connections, e-bikes or car charging stations make the power directly usable. These systems from MDT-tex make a statement for green energy in an extraordinary design. The movable structures are equipped with semi-flexible solar panels on the screen struts, while the fixed tulip-shaped Shade Structure has a surface of fixed panels in aluminium frames. Both panels are multicrystalline silicon solar cells and convert the incident solar energy into electricity. These two constructions were developed by MDT-tex to combine a sophisticated design with ecological awareness and high functionality. These constructions can also be equipped with Smart Systems.

Solar parasol (Solarumbrella)

The design of the Solarumbrella is similar to that of an MDT-tex type E, but the principle can also be transferred to other umbrella types. The shape resembles a flower opened upwards and your surfaces form a kind of funnel due to the curvature. Unlike the classic type E, however, design and sustainable energy generation merge here. Also with this model the parasol catches water and can divert it through the parasol mast and Plexiglas cover into the ground. In addition, the parasol has four semi-flexible photovoltaic panels on the parasol struts. These are positioned so that the sunshade can be opened and closed without any problems. Smartphones, tablets or computers can be charged directly via the electricity generated by the Solar-umbrella, and other Smart Systems can also supplement the design. The Solarum-brella is available with a side length of 3m or 4m and can be conveniently opened or closed via a removable hand crank. The aluminium frame is enclosed on the mast by a plexiglass cover, which makes water drainage possible without damaging the electrics on the screen. The photovoltaic panels are located on the aluminium corner struts. We recommend the MDT-tex PTFE for an extremely long durability of the membrane. However, let us advise you individually on this topic. In order to achieve maximum stability, the screen is anchored in the ground. This model is perfect for public spaces such as parks, green areas and schools. The Solarumbrella creates the perfect balance between a sun protection system and effective energy generation.

Solar Carport

The design of the solar port is similar to that of an MDT-tex Shade Structure in tulip form. It is a rigid construction designed for year-round use. The special feature of the solar port is the surface of 15 fixed photovoltaic panels with aluminium frames in the size of 1.7mx1m on the top of the screen. This allows the sunlight to act on the panels and generate electricity. Also with this model water can run off between the panels and is led off by the screen mast. Since the surface of the photovoltaic material is significantly enlarged here, this also has an effect in the form of higher energy generation. The electricity generated can be used directly in the form of charging stations for e-bikes, e-carts or e-mobiles to refuel the respective vehicle with solar power. The port is available with side lengths of 3m, 4.5m and 5.5m. Depending on the size, one car is covered on each side, so 6 cars can be parked under three solar ports. In order to meet the extreme demands of year-round use, the substructure is made of steel. Welded MDT-tex 480 Precontraint or MDT-tex 680 PVC membranes are used as the membrane material. The solar port is especially suitable for public places or companies, as the charging stations can be used to charge electric vehicles directly. However, it can also be an innovative solution for golf courses to load their golf carts.

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