Trigger for higher quality
In the early 90’s the Wulfmeyer team developed a process and a particularly suitable adhesive which prevents natural shrinkage and bubbling in aircraft PVC top layers.
This process was later named »Wulfmeyer Process« by Airbus, qualified by same in 1998 and became standard for the installation of PVC top layers in new aircraft.
Since 1992, Wulfmeyer has attracted operators of Boeing aircraft and business jets as customers and, services a mixed fleet today.
The NTFs (Non Textile Flooring) are continuously being further developed. Aside from regulatory requirements Wulfmeyer particularly focuses on durability and weight. The NTFs produced in the Wulfmeyer Process provide further usage and economic potential for the fitting and operation of aircraft:
- avoids corrosion of the underlying aircraft structure
- significantly reduces maintenance costs
- longer life cycles, reduced downtimes, lower repair costs
- extended preservation of aesthetic appeal
Wulfmeyer holds a special market position with this development.
The Wulfmeyer Process
The surface material and a reinforcement (phenolic resin laminate) are bonded in a special process (Wulfmeyer Process). This »sandwich«-process gives the flooring, which is particularly suited for passenger decks, entrance, galley and lavatory areas, significant advantages over conventional NTF:
- No shrinkage: The form stability of the waterproof floor covering ensures a tight alignment with seams, hems and sealing of outer edges. It thereby prevents the penetration of moisture and aggressive matter. This mainly prevents corrosion in the structure situated below.
- No bubbling: The Wulfmeyer Process bonds the sandwich layers without air pockets, and the laminate’s homogeneous contact surface enhances installation on the floor panels. These characteristics along with the special adhesive prevent a “bubbling-effect”. This means that the surface remains plane even under the influence of constant “climate changes” (temperature, humidity, air pressure).
Wulfmeyer Process NTF’s are available in a broad spectrum of colours and surface structures.
Further Information:
NTF Wulfmeyer Process (NTF Data)
NTF Wulfmeyer Process (NTF)
Wulfmeyer-Process
Application | aircraft flooring for galleys, entrance areas and lavatories |
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Material | sandwich of NTF surface layer/reaction adhesive/laminate |
Colour & Weight | various, see NTF catalogue |
Thickness | up to 3.7 mm |
Dimension (mm) width x length | 1500 x 2400, 1000 x 3500, 1300 x 3500, 1000 x 5100, 1500 x 5100 |
Tolerance | swidth ± 5 mm, length ± 5 mm |
Dimension Stability | EN434, test with 70 °C, after 168 h |
Requirement | Shrinkage respectively stretch in any direction ≤ 0.2 % |
Curling | EN434, test with 70 °C, after 168 h |
Requirement | Changing of flatness ≤ 10 mm |
Impact test | in accordance with ISO6603-1 |
Abrasion test | in accordance with ISO9352 |
High Quality NTF | |
Technical specification no.: | 2520M1F020200 |
The assembly has to fulfil the Fireworthiness Requirements according to ABD0031 and FAR 25.853 (b) App. F, part I, amdt. 91 | |
Test methods: | |
Flammability according to | AITM 2.0002B |
Smoke Density according to | AITM 2.0007B |
Toxicity according to | AITM 3.0005 |
Basic Quality NTF | |
Technical specification no.: | 2520M1F020300 |
The assembly has to fulfil the Fireworthiness Requirements according to FAR 25.853 (b) app. F, part I, amdt. 91 and JAR 25.853 (a) app. F, part I, change 14 | |
Test method: | |
Flammability according to | AITM 2.0002B |