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MDF V20 Fibrabel varnishable

FIBRABEL PRIME

Type L-MDF according to DIN EN 622-5    Datenblatt zum Download
 

ca. 600 kg/m3 Rohdichte                                                                                           icon mdf ready to paint    Stencil Original Spanolux

 MDF V20 Fibrabel leicht lackierfähig

Area of application

High-quality MDF, sanded on two sides, with a white and plane UV primer coat, for an outstanding but economical coat of paint. MDF Prime® can be directly processed in the desired final colour with varnish (on solvent as well as water basis) or with latex paint (with suitable primer).

 

Description

Industrially painted MDF with outstandingly millable core, with a white and plane UV primer coat with a pleasant “touch” on both sides. The UV primer coat has a very high solid content which makes is non-polluting. The UV paint is cured with ultraviolet light and this way ensures an impact-resistant and wear-resistance surface. This varnishing technology is environmentally friendly because no solvents are released. This industrially varnished MDF is ready for painting and can be processed without pre-treatment, d. h. without primer.

 

The industrially applied white UV primer coat on both sides provides the following advantages:

- no additional primer coat required

- better final result than if you were to apply the primer yourself

- minimisation of curing faults

- no swelling MDF fibres which eliminates the need for sanding in between

- excellent adhesion, even with water-based varnish

- precise colour rendering and thus a flawless final colour result

- cost-saving: little paint consumption because of lower absorption

- time-saving: less coating work

- processing at the height of the seams and screws with fine putty and intermediate sanding:

very easy


The special UV primer coat provides perfect adhesion for varnishes (and primers), in dry as well as in humid environments. The UV primer coat was developed so that the applied paint easily penetrates the primer which guarantees outstanding adhesion. It is possible to paint the board with a minimum of prior degreasing and sanding. The extent of the pre-treatment depends on the quality and the combination of colours used, but in most cases, as with the colours on water and solvent basis, no additional primer is required and the paint can applied directly
 

MDF Prime® emits little formaldehyde (class E1) and can be used for all interior applications. The boards can be used for interior decoration, furniture work and for home improvement.
 

Using the product

 

General painting preparation

It is best to climatise medium-density fibreboard before it is varnished. The top layer is best attached under approximately the same climate conditions as those of the location where the boards are ultimately to be used. This prevents tears and tension in the top layer that might occur with greatly fluctuating temperatures or humidity. Any damage, e.g. at the height of visible screws or on the surface are repaired with a material that is compatible with the subsequently used colour system, e.g. polyester putty. The surface must subsequently be sanded lightly with abrasive paper (granulation P180-P220). The grinding dust should always be disposed of properly.


Pre-treatment of the boards

A pre-treatment of MDF Prime® can be advantageous for optimal adhesion with specific paint types. The boards are degreased with e.g. ammonia solution or a regular detergent. After that, the boards are sanded again with abrasive paper with relatively fine granulation (P180 to P320). A thorough cleaning and drying of the boards is then required. We recommend keeping the boards clean during processing or attachment.

MDF Prime® is suitable for processing with

- varnishes on solvent basis (e.g. Boss Satin Vos)

- varnishes on water basis (e.g. Boss Hydromat, Boss Hydrosilk)

- primers and latex paints (e.g. Boss Omniprim plus, processed with Boss Optimat). This means that the boards can be painted directly achieving, with regard to processing quality as well as adhesion, a perfectly varnished final result.

Varnish processing of the boards

MDF Prime® with its white primed paint surfaces on both sides is the ideal varnish plate for varnish. The MDF can in principle be processed directly and without additional primer with solvent-based varnishes. The European Paint Directive has started to severely limit the use of conventional alkyd paints in 2007, which is why paint manufacturers are more and more switching to water-based acrylic paints. Water based varnishes may also be used directly on the medium MDF Prime® without additional primer, while excellent adhesion is guaranteed. The boards are best painted at temperatures between 12 and 20°C and with a relatively humidity below 85 %. Conditions that are too cold or too warm influence the drying times too much so that the paint does not flow as required. Too much humidity prevents evaporation of the water in the paint which causes the paint to dry too slowly. Processing with water-based varnish requires a higher layer thickness than processing with varnishes on solvent basis. Special rollers and brushes are commercially available for the processing with varnishes on water basis. Drying solvent-based varnishes usually takes a little longer that with water-based varnishes

 

Next to the good adhesion of the varnish on the board, the scratch resistance of the varnish that is used is also important for the final quality of the varnished surface. The scratch resistance of the varnish is crucial for the selection of the varnish, especially for water-based varnishes. Severe strain of the coated varnish (like scratching with a fingernail) on water-based varnish is possible only after at least one week of curing. Varnish is never fully cured after 24 hours but hard to apply a second coat of paint. A prefabricated varnish system will in most cases take more than one week until the varnish is fully cured (varnish systems on solvent basis as well as on water basis).

 

Processing with latex paint

During the processing with latex paints, we recommend using a humidity resistant primer because latex paints are the most difficult when it comes to adhesion. A universal primer for inorganic surfaces is therefore ideal and has a good structure. This primer assures good adhesion and forms an excellent basic coat for special paint processing. In some cases, this primer is not required but we recommend it to be on the safe side.

 

Edge processing

PDF Prime® consists of 100 % coniferous wood from sustainable forestry. The edges of medium-density fibreboard have a lower density than the surface and thus absorb the paint better. Processing the edges requires thorough sanding and filling the edges with a suitable filling primer (several times, if necessary). After filler coats have been applied to the edges, the fibres may swell from the influence of moisture which will make intermediate sanding necessary. Different filling primer or polyester putties for the narrow sides of wooden boards are available commercially. Such products are usually applied with a spatula, brush or roller.

 

General regulations

The boards must be used with use class 1 (restrictions for ambient temperature and humidity) and can be used only with the biological hazard class 1, EN 335-3. The boards must be protected against any direct contact with water. Any stacking must be done flat on a pallet or with a sufficient number of crossbeams while contact with the floor must be prevented. Under fluctuating humidity conditions, the boards will either expand or shrink. Use suitable tools for sawing, milling and drilling.

 

Dimensions and stock program

Thickness: 9, 10, 12, 16 and 18 mm, other thicknesses available upon request. Width: 1220 mm and length: 2440 mm or 3050 mm. Smaller dimensions or

other thicknesses are possible upon request.

 

Comment on the range:

The product MDF Prime® is also available as humidity resistant MDF, namely Umidax® Prime. This is suitable for general, non-structural use in humid environments. 

 

Stock programme

Thickness Dimensions
in mm in mm
  1220 x 2440 1220 x 3050
9 80 80
10 72 72
12 60 60
16 45 45
18 40 40

Refer to the individual items for details on packaging units in pcs.
You can find the data sheet with technical details in the   Downloadcenter.

 

 

 

 

Technical data

General properties + standard

 Unit

Average values

Thickness EN 324-1

 mm

9

10

12

16

18

Thickness EN 323

 Kg/m³

650

640

600

600

600

Moisture content EN 322

%

6-10

6-10

6-10

6-10

6-10

Technical properties + standard

 

5/95 quantile values

Swelling/24u EN 317

%

16

16

16

14

14

Tensile strength EN 319

N/mm²

0.45

0.45

0.45

0.45

0.45

Bending strength EN 310

N/mm²

20

20

20

18

18

Bending elasticity modulus EN 310

N/mm²

1700

1700

1700

1600

1600

 

General information

Property 

Standard

 Unit

Fibreboard specifications

Part 1: General requirements

     Nominal diameter classes (mm) 

19

  >19

Tolerances with nominal dimensions:

 

Thickness

EN 324-1

mm

± 0.2

  ± 0.3

Length and width

EN 324-1

mm/m

± 2.0 mm/m, max. ± 5.0 mm

Perpendicularity

EN 324-2

mm/m

2.0 mm/m

Deviations from the straightness of length and width

EN 324-2

mm/m

1.5 mm/m

Tolerance for board thickness

EN 323

%

± 7.0

Formaldehyde perforator class E1

EN 120

mg/100g

8