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Metallic Surfaces

Metallic Surfaces - Sol-Gel Hybrid Systems

Since 2005, we have been developing, formulating and producing functionalised special coating systems for metallic & mineral surfaces.
Another focus of our development work is the special coatings with antimicrobial effect on metal surfaces, mineral and plastic surfaces.

Hybrid network - Graphic

Sol-gel network with corrosion protection particles
and functionalised, hydrophobic surface.

Hybrid Network - Photo

Functionalised easy-to-clean coating
on a steel soot filter
1. Water drop

2. Functionality for exc.: Hydrophobia

3. Hybrid network

4. Metallic surface

Inorganic - organofunctional sol-gel hybrid systems for metal surfaces

Aluminium 3003
Cr-free pre-treatment
3 µm sol-gel hybrid system
Coil Coating
60 sec curing at 260 °C

> 1000 h acid spray test
No delamination at the scratch
Easy-to-clean effect

- High-performance thin layer coatings
- Transparent, glazing or coloured covering
- Reliable corrosion protection at low film thicknesses
- Short curing time (coil coatable)
- Functionalised surfaces
- High coverage
- Easy-to-clean effect
- Heavy metal free
- Very high UV resistance
- Solutions for primer and topcoat applications
- Smooth levelling
Advantages of InterLotus
coating systems
Coating thickness comparison
Enlarged illustration x 300.000
Chemical bond to the Substrate
> No Delamination

1     Functionality
2     Inorganic-organofunctionally
        modified Sol-gel-hybrid
3     Covalent bond
4     Metal substrate

Metallic Surfaces

Scratch-resistant after scratch test

1 kg scratch test

Highly transparent & high
Temperature resistance
at 300 ° C

Transparent &
translucent colour /
Scratch resistant settings

Further advantages of the Interlotus
aluminium coatings:

- High temperature resistance
- Self-cleaning
- Non-stick
- Antimicrobial
- Coil coatable


Interlotus aluminium coatings are preferred by industrial
manufacturers and users on coil coating lines. They offer multiple
advantages for a finished and high-quality aluminium surface.
- High transparency
- Glazing
- Anti-fingerprint
- Easy-to-clean
- Scratch resistance

Stainless steel

Stainless steel in various qualities is "quite soft" and very sensitive to
scratches and is therefor foiled before further processing. Usually plastic
foils are used. At the end user, the foil has to be removed and the
sensitive surface comes into operation.

Therefore, stainless steel surfaces should already be protected before
foiling. Interlotus products protect against scratches, facilitate cleaning
with an easy-to-clean effect and prevent unsightly fingerprints with an antifingerprint effect. If required, the stainless steel coating can be equipped
with an antimicrobial effect
Anti-fingerprint & easy-to-clean properties
Both properties create hygienic advantages in
clinically demanding situations

Stainless steel -
clean cut edges
with oak recess

Stainless steel
coated - Easy-to-clean
Soot filter inside view

Stainless steel - scratch test
left uncoated
right coated

Stainless steel
Soot filter inside view

Advantages of Interlotus
coatings on stainless steel:


Galvanised steel

Feuerverzinkter- und galvanisch verzinkter Stahl besitzen je nach Schutzschicht, einen mittleren bis guten Korrosionsschutz. Für anspruchsvolle und langlebige Oberflächen bieten wir zusätzliche ultra-dünnschichtige, lackierfähige Konversionsschichten an. Hierbei handelt es sich um Coil Coating Produkte, die den Korrosionsschutz und die Gleiteigenschaften mit sehr dünnen Schichten ≤ 1 µm wesentlich verbessern können.


Interlotus Produkte für verzinkten Stahl
haben folgende Eigenschaften:

- Applizierbare Konversionsschicht
- Diverse Korrosionsschutzklassen von temporär bis 1000 h NSS
- Korrosionsschutz bei S ≤ 10 µm, 1000 h NSS
- Primer Funktion
- Antifingerprint
- Verbesserung der Gleiteigenschaften bei der Weiterverarbeitung
- Kundenspezifische Farben / Farbeinstellungen

Mit diesen Produkten schaffen wir dünnschichtigen Mehrwert, der positiv zur Produktionsverbesserung, zur Langlebigkeit und zum Umweltschutz beiträgt.

Interlotus product - Konversil

Uncoated sheet
after 48 hours in the
salt spray test

                Coated sheet
after 200 hours in the salt spray
  test Coating less than < 1µm
       Interlotus Konversil®

Movie Example

Steel / Black steel

Untreated black steel gets red rust very quickly. Depending on the
requirement profile, Interlotus can offer you a temporary corrosion

Steel pipe - temporary corrosion protection

The aim of temporary corrosion protection is to achieve a sufficient
corrosion protection effect on the components during the production
process, storage and transport.


Zinc surfaces are known for their natural long-term resistance.
They pass through the natural process of ageing, Patina
education with slight optical changes. In order to create these
natural processes in an artificially controlled process, technically
complex conversion layers or phosphating’s are applied to the
zinc material. These protective layers are in turn sensitive to
mechanical damage and corrosion.

Therefore, Interlotus has developed thin-layer, long-lasting
corrosion protection coatings especially for phosphated surfaces.
We have also developed coil-coating paints for various
applications on bright rolled zinc surfaces with extreme long-term
corrosion protection (NSST > 2.000 h).


Zinc sheet with easy-to-clean &
Dirt-repellent effect.

Zinc - Corrosion Protection
HPC PP - High Performance
Coating for phosphated

InterLotus HPC Color -
Bright Rolled Zinc

InterLotus HPC - High Performance Coating can be
applied directly onto bright rolled zinc sheet. The
coating process is environmentally friendly and saves
resources. The phosphatisation can be eliminated.
You save costs, time and material.

InterLotus HPC Color -
Colour settings

Zinc - anti-fingerprint for
phosphated surfaces

Zinc Color

Excelent finishing
Cross cu

InterLotus HPC Colour / Primer /
Bright Rolled Zinc / Brushed Zinc

InterLotus HPC Color
NSST > 2400 h

Test methods / Quality assurance

Test Methods -
Cross Cut / Erichsen Deepening / T-Bend Test

The adhesion, delamination and flexibility of Interlotus coatings are
tested with all test methods. In the T-bend test, we test the
flexibility and adhesion of the coating. All Interlotus Coating
relevant test methods are performed in our own in-house Technical
Centre & Laboratory.
T-Bend Test                     T-Bend Test
         grid cut                           grid cut after tape
                                                 removal under
                                               the microscope
Laboratory & Tests
Interlotus "High Performance Coatings" are
individually developed and formulated in our
own laboratory. This is how our nanomodified hybrid systems are created.

Scratch test, T-bend test
Tests in the pilot plant & laboratory,
dispersion tests, colour measurements,
laboratory passivation, scratch resistance.