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MDF is a type of material that is actively used in various construction fields, most often used in everyday life for the manufacture of furniture. Essentially, MDF board is pressed wood.

MDF is an excellent material, its dimensions are ideal for making furniture, tables, cabinets, walls, baseboards and much more.

MDF panels, which are used for wall cladding and for forming cabinet furniture, are obtained by sintering under pressure. It is based on a waste wood resource, namely small chips, as well as an adhesive to form a complete board.

Length

The typical length of a wall panel is 2.62 m, while some manufacturers have launched products with lengths of 2.44 and 2.8 meters.

The parameters and sizes of the boards vary depending on the MDF manufacturer. So, for example, the popular brand Kronospan produces panels in sizes 2600X200 mm, 2600X325 mm, 2600X153 mm and 2600X200 mm.

The world-famous manufacturer HDM offers panels with parameters of 1300X198 mm and 2600X198 mm. Finally, the Russian one produces panels in a single size 2600X238.

Each manufacturer (within its size range) produces a wide variety of panels, differing in texture and color.

Features of EGGER MDF

The Egger Group has been a manufacturer of particle boards since 1961. It is one of the leaders in the European market. Egger's headquarters are located in the Austrian Tyrol. 19 enterprises in different countries are involved in production, two of which are located in Russia, in the cities of Shuya and Gagarin. Egger's Russian factories are equipped with modern equipment that allows them to produce more than half a million cubic meters of slabs per year. In particular, in the Smolensk region, MDF is produced using the latest ContiRoll Siempelkamp press.

NORDEX is the official dealer of Egger. Therefore, purchasing original products in our online store is not associated with markups from intermediaries, which has a positive effect on the price.

Thickness

Depending on the brand of the manufacturer and the chosen model, the thickness of MDF varies from 3 to 30 mm. In addition, some enterprises produce veneered modifications, the thickness of which reaches 60 mm.

Thanks to this variety, each consumer can always choose the best option taking into account the dimensions of their room.

By the way, the thickness of the panel is quite important when choosing a suitable finishing material: the weight of the product and the load that it can withstand depend on it.

Standard panels weigh:

• with a thickness of 3 mm – 16 kg;
• 6 mm – 31 kg;
• 12 mm – 60 kg;
• 22 mm – 106 kg;
• 28 mm – 142 kg.

Features and Benefits

In the Egger MDF production process, fine wood chips are dry pressed under high pressure and temperature conditions. Thanks to a carefully controlled process, the resulting material is distinguished by:

• possibility of profiling;
• high volumetric density and uniformity of structure;
• edge strength;
• flat surface;
• low degree of swelling;
• resistance to pulling out screws.

In terms of mechanical, technological and physical properties, Egger MDF board is similar to the characteristics of hard wood. The company produces sheets with thicknesses from 6 to 40 mm. Egger products comply with the requirements of GOST EN 622-5.

Weight

The external dimensions and thickness of the panel play a key role. Weight according to dimensions is given in the tables above.

Let's see how the weight of an MDF panel measuring 2,800*2,050 mm (the maximum value on the market) will change, depending on the thickness of the product:

• 3 mm – 16 kg.
• 6 mm – 31 kg.
• 12 mm – 60 kg.
• 22 mm – 106 kg.
• 28 mm – 142 kg.

It is worth noting that the weight of the decorated panels will vary slightly upward.

Manufacturing technology

A special technology is used to prepare this material.

Procurement of raw materials

Initially, the resource is harvested. Now the company purchases wood chips or collects them from the production workshop.

The type, quantity of chips and quality of wood depends on the required sizes of MDF sheets and their price changes accordingly.

Wood shavings

Recycled materials are not always used to prepare wood chips; large logs are often taken, which are first cleared of bark and placed in special chopping devices. Next, the chips are washed and heated with steam.

Fiber preparation

Pre-cooking of fibres.

The resulting material is placed in a refiner, which allows the resulting mass to be combined with lignite, as well as some resins, which allows for a bond between wood particles.

Prices for MDF panels depend on the size, type of material, and resins used; the final material can be assessed by photo before purchasing. Next, air is removed from the raw material, and it is dried. Ultimately, the result is an environmentally friendly material, since synthetic components are not used;

Creating a slab

The size of the MDF board and sheet at this stage depends on the size of the walls of the equipment. Essentially, different sizes can be created as long as strength is not lost. The device independently levels the raw materials and creates an even plane, like a carpet, then the edges are trimmed to give an even shape.

Now the pressing process begins. Its main task is to eliminate air inside the stove, which ensures better technical performance.

Final pressing

Now the final stage of preparation begins, when the material is placed under the main press.

Next, the slab is trimmed using a dividing saw. Ultimately, the finished MDF sheet is dried for 30 minutes.

The popularity of the material is due to its affordable price, high strength, and the ability to simply create wide sheets of wood.

Its main properties:

• qualitatively high density indicators - about 800 kg/m3;
• the material is moisture resistant. It is used to produce bathroom furniture;
• thanks to resin impregnation, MDF is not damaged by harmful microorganisms ;
• is resistant to high temperatures;
• the material always remains quite flexible. Resistance to destruction 15 MPa.

Dimensions depending on application

Depending on the area of ​​application of MDF, the dimensions of the facing material also change.

Here you can derive the following standards:

Wall panels

The standard length of a wall panel is 2.6 meters, however, some manufacturers produce products with a length of 2.44 and 2.7 m. The width can vary between 150-900 mm.

Depending on the width, panels are divided into types P-1, P-2, P-3, P-4, P-5 (100, 125, 150, 175, 250). With panel thickness 3-30 mm. The thickness of veneered MDF can reach 60 mm.

Material Density

Fiberboard is made from fine sawdust. The slabs are made from roundwood and its waste. At the production stage, the raw materials are ground and subjected to high-pressure steam treatment. The ground raw materials are dried and sent for gluing and pressing.

The density of MDF kg per m3 is on average from 600 to 850. These values ​​can be more or less. Before purchasing the material, it is imperative to determine this characteristic. Quality depends on this indicator, while the type of wood does not play a special role. The concept of density is a scalar physical quantity defined by the ratio of mass to volume. The density of MDF boards can vary, so this material is divided into categories and denoted by the abbreviations LDF and HDF.

The first marking should be understood as “low-density particle board”. This figure varies from 200 to 600 kg/m3. The second of the varieties mentioned is a high-density board. This figure here can exceed 800 kg/m3. The upper layers of the material, whose thickness is 1 mm, have a high and almost always the same hardness. Deeper the density drops by half.

If you mill through the layer and open the material from the inside, you can see that as the density decreases, the fibers are less connected to each other. When processing boards that are close to LDF, the loosely bonded fibers peel off at a sufficient depth. Because of this, unevenness appears on the finish. To correct the situation, additional processing is carried out by grinding and thermal rolling. This may entail additional costs and an increase in the cost of MDF.

Additional characteristics of MDF

This material is still among the most popular because it has good hardness, density and undeniable environmental friendliness. The fact that it contains an insignificant percentage of formaldehyde resins makes it possible to equate MDF to the category of safe.

And the presence of only one binding component - lingin - allows us to consider fiberboard environmentally safe. At least for this indicator alone, the material deserves the highest rating.

Regarding the nominal density, it is as follows for MDF: minimum 600 kg/m3, maximum 850 kg/m3. This indicator is directly responsible for the quality of the material. For MDF it is calculated in the same way as for all other materials. Weight is divided by volume. The resulting answer will convey the density indicator as accurately as possible.

In labeling, manufacturers distinguish two types:

• LDF is low density fiberboard. It can be a minimum of 200 kg/m3, but reaches 600 kg/m3;
• HDF is a board whose density exceeds 800 kg/m3.

Although the manufacturer is somewhat disingenuous when he puts out such indicators in the MDF labeling. The fact is that only the upper layers of the material have such a high density. But it is precisely these couple of millimeters that the manufacturer makes of the highest quality and density.

Largely due to this, manufacturers declare with full responsibility that MDF is a non-flammable material. The density indicator is not only responsible for the quality of MDF, but also for its price.

Fire safety certificate

The very fact that MDF contains sawdust and resins indicates that the material is quite flammable. At the same time, fire inspectors must take into account the indicators of the probable release of toxic hazardous compounds that are formed during the combustion of MDF. The poorer the quality of the material, the more smoke it produces when burning.

The mechanism for issuing a fire safety certificate is as follows:

• You must submit an application to the local Ministry of Emergency Situations.
• Samples of MDF must be attached to the application.
• If samples and documents are available, EMERCOM specialists must not only carry out testing activities, but also compare the samples with the main production product.

The following documents must be provided:

• a document confirming that the manufacturer has been registered and registered with the tax office;
• data on technical conditions;
• instructions and list of technological processes;
• if fire safety certificates and test reports were previously drawn up.

Most factories that have large production volumes have the necessary fire safety certificate.

Tips for DIY Coloring

MDF boards are well suited for kitchen furniture and are used as an alternative to plastic. You can purchase a kitchen made of MDF with photo printing, but if finances do not allow, then you can paint the surface of the slab in the color that you prefer. In this case, you need to adhere to a certain algorithm of actions. At the first stage, the surface is well cleaned, washed and sanded.

Then you need to wipe it with a solvent. At the next stage, the primer is applied in 2 layers with a break for drying. Using a brush or balloon, a layer of paint is applied to the surface. You can use a spray gun, it will cost more, but the result will be better. After the paint has dried, you can apply a layer of varnish on top, which will add shine to the product and perform a protective function.

Description

Recommendations for choosing material

As for the materials used when processing MDF, it is better to choose a polyurethane-based mixture containing water as a primer. This way you can hide the structure of the slab. It is better if the composition is in a can. For painting, it is best to use acrylic paint or polyurethane enamel for MDF. One of the main advantages of the 2nd option is the absence of odor. For the finishing coat it is recommended to use polyurethane varnish. You can choose a matte or glossy version.

High Density Material and Its Applications

High density MDF is similar to its low and medium density counterparts. This material has high strength and is therefore more reliable. The standard thickness is 4 millimeters. Such plates are used to achieve the following purposes:

• leveling walls;
• floor coverings;
• production of interior doors;
• carriage building;
• when lining the car interior;
• manufacturing of trade and exhibition equipment;
• hide communications if necessary.

Description

Tips for cutting

When you already know the density of MDF, you can study tips on cutting the material. It is best to purchase products with standard sizes and factory processing. If there is a need to carry out sawing, it is better to entrust this to specialists. In this case, special format-cutting machines are used.

Craftsmen know that workpieces are laid with the back side up if cutting is carried out on a machine. When starting the saw, the movement of the plates should be progressive and smooth. The teeth are immersed by 1 mm. Proper cutting allows you to obtain precise workpieces to the required dimensions. This process is labor-intensive, but allows you to obtain parts for making furniture and doors.