KTX 20 Anti-graffiti Coating – a durable system
The coating is fully transparent, one layer is sufficient for complete protection.
KTX 20 is a unique, single component polymer product which is colorless after drying and is used for protecting surfaces against graffiti. KTX 20 has anti-poster, anti-adhesive and anti-static properties. The preparation dries fast and features very good adhesiveness and durability. Treated surfaces are ideally protected against aerosol graffiti paints and most commercially available markers, dirt, acid rain, alkalis, oil. It hinders permanent sticking of posters, stickers, and adhesive tapes. On its application, KTX 20 constitutes a release liner that prevents substrate penetration and its anti-adhesive properties reduces adhesiveness, often spurring the so-called 'beading' effect in liquid substances/pigments. Surfaces protected with KTX 20, owing to its anti-static properties, remain clean for a long time, which positively limits the costs of cleaning and maintenance, and thus extending service intervals for such surfaces. Protected substrate exposed to atmospheric conditions facilitate rainwater and snow run-off, thus improving visibility in adverse conditions.
KTX 20 features preservative properties and UV filters, owing to which it preserves the colour of protected substrates, and in the case of old, damaged, dull and oxidized surfaces the coating restores their natural look. The preparation is available in gloss version.
Technical Data After Application
Appearance on surface: transparent coating with gloss.
Coating durability: at least 20 years. Graffiti removal: multiple cycles. Dry coating thickness: approx. 5-10 µm. Full anti-graffiti protection: after 24 hours. Full curing: after 7 days. The preparation also features anti-corrosive, water-repelling, anti-adhesive and anti-poster properties with high durability and resistance to adverse external factors: thermal, biological or chemical, UV radiation, alkali, corrosion, salt and ammonia solutions, and the majority of solvents. KTX 20 is a durable system facilitating multiple removals of graffiti paints, without the need for coating restoration after graffiti removal.
Areas of Application
KTX 20 is suitable for use on smooth, non-absorptive substrates, for example: varnish coatings, powder paint coatings, polyurethane coatings, epoxy coatings, industrial paint coatings; plastics, e.g., polystyrene, ABS, polycarbonates, acrylic glass (plexiglass, poly(methyl methacrylate); glass, steel, zinc plated substrates, aluminium, as well as natural stone, such as polished granite. It is applicable on interior and exterior surfaces of trams, buses, train cars, as well as ticket vending machines, parking meters and lighting poles. Due to its unique chemical resistance it is especially recommended for protection elements of urban infrastructure.
After opening the container the preparation is ready for use. Before use, do not stir nor shaken the container due to a possibility of and excessive pressure build-up. After pouring the desired amount of the preparation (through a varnish strainer of approx. 125 μm) close the container to prevent impact of humidity and evaporation of the preparation. Apply small portions of the preparation at a time. Do not pour the unused preparation back to the original packaging. The preparation shall be applied in a single thin layer. If too thick a layer is applied, dried coating is susceptible to cracking.
Coating application: +5°C to +30°C.
Optimum application temperature: +15°C to +20°C.
Relative air humidity: up to 70%.
Due to the preparation's evaporation and drying rate, any corrections should be executed immediately.
Anti-adhesive properties of the coating render it impossible to apply second layer.
Mean coating correction time after application on a substrate is at temperature 22°C: approx. 5 minutes.
The coating is touch dry at 22°C: approx. 15 minutes.
During this time make sure no impurities, as well as no water, come in contact with the coating. After approx. 12 hours of drying at 22°C the coating is cured to form the so-called resistance to weather conditions. Initial anti-graffiti protection properties the coating features after 24 hours; full mechanical, chemical, and anti-graffiti properties are obtained after 7 days at 20°C - during this period, the coating should not be forcibly wiped/scrubbed. The proper temperature range must be maintained throughout the coating curing time; avoid direct sunlight and humidity. Humidity accelerates cross-linking of the coating and affects its quality and tightness. When the anti-graffiti coating is cured, it is impossible to permanently apply another layer of the preparation. The coating should be applied precisely, so that the treated surface is entirely covered with a film of liquid and a homogeneous layer is created. Failure to do apply the preparation precisely may limit the effectiveness of the anti-graffiti protection. Make sure that no excessive coating should be applied. If the anti-graffiti coating is applied on newly paint coated substrates, maintain sufficient break time for curing of the paint coating, following Technical Data Sheet of a paint coating system. The coating may be applied outdoors and indoors with proper ventilation. Pay special attention to potential sources of fire. Wind spreads vapours over significant distances.
Spraying: the product is applied by means of a pneumatic low pressure (HVLP) spray gun with a 0.7 to 1.3 mm nozzle, under the pressure of 2 to 3 bar.
Manual: microfibre cloth, varnish rollers, window-glass washing pads or lint-free, absorptive fabrics. Another way is to wrap the rubber part of a squeegee or the fabric part of a washing pad with a microfibre cloth. Select suitable application equipment to the size and shape of the treated surface. Apply the coating directly onto a microfibre cloth, and not onto the treated substrate. Replace microfibre when it is dirty. Use the preparation as concentrate. Do not mix it with any other liquids.
The basic principle is to apply 1 layer of full/tight coating.
The coating thickness of approx. 5 μm provides for sufficient protection.
Theoretical spread rate (coverage): 5 μm: 66 m²/L (15 ml/m²) up to 10 μm: 33 m²/L (30 ml/m²).
Theoretical spread rate (coverage) is an approximate value defining the extreme consumption figures, which differ depending on the type of the protected substrate.
Practical spread rate (coverage): depends on conditions during application, methods of application and preparation application losses.
A layer with thickness of 10 µm is applied to matte, absorbent and uneven surfaces.