Application guides

by Fakolith Chemical Systems

Colorless foodgrade varnish suitable for direct and indirect food contact, wood, mineral surfaces, food displays, utensils for the food industry and open areas

Description of the problem

There are many different surfaces in the food industry which must be properly varnished to be suitable for direct and indirect contact with food. Surfaces are as varied as barrels, casks, cooperage of wine and alcoholic beverages, displays, shelves, trays, wood elements, slate and other materials where food is served, pieces from 3D printers, utensils, open surfaces of ceilings and walls... Fakolith offers various solutions certified by both EU 10/2011 (latest revision EU 2018/213) and FDA 21 CFR 175.300. Most of the Fakolith FoodGrade paints and varnishes are treated with the antibacterial food technology BioFilmStop which contributes positively preventing from the nesting of the bacteria, main cause of food poisoning, and improves the food safety and hygiene. 

Summary of the most common basic solution and procedure

Because of surfaces diversity, does not exist just one foodgrade varnish to cover all applications, so we recommend try the following options. Starting from clean bases and free of dust, and considering especially in wood the processes of sanding and aspiration, currently there are the following options: 


· Option A- DISPERLITH FOODGRADE ELASTIC Varnish: it is the first water based foodgrade varnish suitable for direct and indirect contact with food that complies with the European regulation EU 10/2011. It is a foodgrade acrylic varnish, easy to apply and renew for low stress surfaces, mainly for absorbent bases in indirect and direct contact with foods.


· Option B- VARNIPACK FOODGRADE: It is a novel water-based varnish and Overprint varnish, quick-drying, suitable for direct contact with food that, in addition, is presented as the most avant-garde option for the MDF, cardboard and similar packaging industry, as well as with other multiple wood surfaces or derivatives, and counts with a double certification EU 10/2011 and FDA 21 CFR 175.300, fact that expands its scope.


· Option C- FAKOLITH FK-45 FOODGRADE: for maximum physicochemical resistance and greater direct food contact compatibility according EU 10/2011, the epoxy varnish FK-45 foodgrade (BPA Compliant) is undoubtedly the best option.   

Application process

1.- Option A - DISPERLITH FoodGrade Elastic

PROPERTIES: DISPERLITH FoodGrade Elastic special FoodGrade paint or varnish, tested for suitability for coming into direct contact with foods, water-based dispersion with modified acrylates copolymers, low emissions and low odour (Low Voc), free of APEO, ammonium, formaldehyde and heavy metals, highly resistant to dampness and humidity, for interior and exterior use. DISPERLITH FoodGrade Elastic forms a well-balanced and elastic film of paint, with a satin finish, that is easy to clean and disinfect, easy to apply and, quick drying, also at low temperatures, from 3ºC, with low odour and providing an excellent finish, in line with the DIN EN 13300 Standard, wet scrub resistance Class 1, covering Class 1 (>250 ml/m²), highly impermeable to water vapour, Class 3 (SD = 1.57), and water permeability Class 1 (W = 0.03). DISPERLITH FoodGrade Elastic is a paint with (EC) UNE-EN 1504-2:2005 marking and that is highly resistant to Class 1 and 2 aggressive chemical attack, with testing of the food simulants, along with the usual cleaning and disinfecting agents in their maximum recommended solutions, TECNALIA Report 050844 and Tests DIN EN ISO 4628-2: 2004-01 by TÜV SÜD Germany and/or Fakolith R&D+i. (For more security, before use, ask your case to our Tech. Department). Available in white and other colours.

FOODGRADE TECHNOLOGY: DISPERLITH FoodGrade Elastic is certified as a FoodGrade paint, apt for being in direct contact with foods and drinks, and that duly complies with all current European regulations regarding materials that come into contact with foods, (EC) Regulation 852/2004, (EC) Regulation 1935/2004, (EC) HACCP Regulation 1895/2005, and (EC) GMP Regulation 2023/2006, as well as Spanish RD 847/2011 and (EU) Commission Regulation No. 10/2011, along with the subsequent amendments thereto, regarding plastic objects and materials designed to come into contact with foods. To this end DISPERLITH FoodGrade Elastic has been tested with simulants A, B, C (OM2-40ºC) and D2 (OM2, 20ºC), as shown in the trials run by Fakolith, through independent certificating entities such as Tecnalia and the CNTA (Spanish National Food Technology Centre), among others, insofar as there is compliance in all of the tested cases with the overall and specific migration limits imposed by the Regulation for the above-mentioned simulants, which are equivalent to all simulants and food groups. DISPERLITH FoodGrade Elastic has been awarded the Declaration of Food Conformity – Health Register FAKOLITH RGSEAA ES-39.005259/T y ROESP E-0043-E.

BIOFILMSTOP SANITARY TECHNOLOGY (Treated Article BPR Art.3): DISPERLITH FoodGrade Elastic is an intelligent sanitary paint, treated with BioFilmStop Inhibition Technology, highly resistant to biofilm and bacteria, ISO 22196:2011 (Escherichia coli, Listeria monocytogenes, Bacillus subtillis, Pseudonomas aeruginosa, Staphylococcus aureus, Salmonella enteritidis, Legionella pneumophila...) also notably improving HACCP, food safety and asepsis in the user company, while combining Fakolith’s innovative FOODTECH film protection technology, based on food preservatives.

RECOMMENDED USE: Even though DISPERLITH FoodGrade Elastic does not allow the migration of toxic substances to foods, because of its dispersion quality it has mainly been designed for use on exposed surfaces (walls, ceilings, skirting boards, basic food packaging, interiors and exteriors, in contact to dripping or occasional condensation, and in drinking water tanks but not in those where there are other foods or drinks, where we recommend the use of the FK-45 epoxy range, due to its higher level of physicochemical resistance (in case of doubt consult the use of this paint for potable water deposits or other possible cases). Compatible with most surfaces, duly primed should such be required, lacquer-finish sandwich panels and to cover well-adhered previous coats of dispersion and/or priming paints, resistant to cross-cut test Class 0-1 UNE-DIN EN ISO 2409:2007. The excellent covering and water-vapour barrier qualities mean that it functions as an excellent waterproofing film, particularly in severe industrial, climate or sanitary conditions, for the food industry, health sector, and pharmaceutical or cosmetics industry in general, construction and civil engineering.

HOW TO APPLY: Carefully protect all surfaces that are not to be treated from splashing. Application can take place at ambient and surface temperatures as low as 2-3ºC and up to a maximum relative humidity of 75%. Following adequate preparation of the surface DISPERLITH FoodGrade Elastic should be applied undiluted, in two coats, using brushes, rollers or airless spray guns. The surface must be clean, free of hygroscopic salts, microorganisms, etc. and, should such be required, duly primed. Do not apply the second until the first coat has lost its wet sheen and is dry to the touch (in normal conditions, of around 20ºC with a humidity of around 60%, this will be in approx. 2-3 hours). Clean utensils immediately after use with water. For more information consult the specifications sheet and/or application guidelines, along with the safety sheet.

AVERAGE YIELD: DISPERLITH FoodGrade Elastic has a yield of approx. 3-5 m²/l, applied in two hands although this can vary considerably, depending on how it is applied and the texture and absorption of the surface.

1.- Option B - VARNIPACK FoodGrade

VARNIPACK FOODGRADE is a special thin layer fast drying water based varnish with modified acrylic copolymers, free of APEO, formaldehyde, phthalates, BPA, heavy metals, with satin finish. It is suitable for direct contact with food according to European (10/2011) and American (FDA 21 CFR 175.300) regulations for the food and beverage groups indicated in the declaration of conformity, for packaging and other situation of single or repeated use.

Suitable as "overprint varnish for printed packaging" in the sector of the printed food packaging of MDF, wood and derivatives, plywood, cardboard, etc. Also for food displays, such as wooden shelves, wine barrels, and to mark and protect inedible food shells.

• Industrial application by roller train
• In flexographic industry
• With spray equipment
• Brush or roller, for small applications
• Suitable for direct and indirect contact with food.
• Transparent satin finish.
• Excellent resistance to moisture.
• Excellent resistance to temperature.
• Excellent adhesion.
• Excellent balance between resistance and flexibility.
• Excellent transfer with anilox rollers.
• Good resistance to tacking and blocking.
• Resistance to wet scrub Class 1
• Very low odor.
• Fast dry.
• Barrier function.
• Formulated without Bisphenol A. BPA free

VARNIPACK FoodGrade complies with the limits of global and specific migration established in Regulation EU 10/2011 and subsequent modifications, for contact with all foods and beverages encompassed by simulants distilled water, A, B and D2 (equivalent to all EU simulants), for storage prolonged at room temperature and below, including hot filling conditions and / or heating to 70 ° C ≤ T ≤ 100 ° C for a maximum of t = 120/2 ^ [(T - 70) / 10] minutes of in accordance with the tests carried out by AIMPLAS in the framework of the official R & D & I project "FDA & EU FOODGRADE COATINGS".

VARNIPACK FoodGrade complies with the limit of extractable fraction established in CFR 21, 175.300 (c) (3 and 4) for repeated use contact with the food groups and conditions described on Compliance Declaration.

BIOFILMSTOP ANTIBACTERIAL TECHNOLOGY (treated article BPR Art.3 and FDA 21 CFR 175.300): Varnipack FoodGrade combines FoodGrade Technology with BioFilmStop Inhibition Technology, highly resistant to biofilm and bacteria, ISO 22196:2011 (Escherichia coli, Listeria monocytogenes, Bacillus subtillis, Pseudonomas aeruginosa, Staphylococcus aureus, Salmonella enteritidis, Legionella pneumophila...) also notably improving HACCP, food safety and higiene.

1.- Option C - FK-45 FoodGrade

DESCRIPTION: FAKOLITH FK-45 FoodGrade is a high-performance, two-component, modified epoxy FoodGrade paint with a high solids content, low voc, low odour and EC marking. FK-45 FoodGrade is a FoodGrade epoxy paint that ensures limitation of migrations, generates a high-gloss impermeable film that is easy to clean and disinfect, with water at temperatures of up to 90ºC. The excellent covering and vapour barrier effect qualities of this paint ensure that it will function as an excellent waterproofing agent and long term anticorrosion treatment, when applied to metals in combination with a correct anticorrosion primer system. Compatible with most of primed surfaces, the duly primed metallic surfaces, lacquer-finish sandwich panels and compatible previous paints and/or primers with good adherence and resistant to cross-cut test Class 0-1 UNE-DIN EN ISO 2409:2007. FK-45 FoodGrade is highly resistant to abrasion UNE EN ISO 5470-1:1999 and highly resistant to aggressive chemical attacks UNE EN 1504-2:2005 (chemicals compatible for epoxy), with UNE Shore hardness of 80±5 units, Shore D EN ISO 868:2003 (23±2ºC; 50±5%Hr), covering Class 1 (300 µm dry film) and damp rubbing Class 1, DIN EN 13300. Paint resistant to the most disinfectant cleaners according to Tests DIN EN ISO 4628-2: 2004-01 by TÜV SÜD Germany and/or Fakolith R&D+i (For more security, before use, ask your case to our Tech. Department).

FOOD GRADE PAINT CERTIFIED AS APT FOR DIRECT CONTACT: FK-45 FoodGrade epoxy paint duly complies with all current European regulations regarding materials that come into contact with foods, (EC) Regulation 852/2004, (EC) Regulation 1935/2004, (EC) HACCP Regulation 1895/2005, and (EC) GMP Regulation 2023/2006, as well as Spanish RD 847/2011 and (EU) Commission Regulation No.10/2011, and lasts amendments EU 2018/213 (BPA Compliant), regarding plastic objects and materials designed to come into contact with foods. To this end FK-45 FoodGrade Hygienic has been tested with simulants A, B, C (OM2-40ºC) and D2 (OM2, 20ºC), as shown in the trials run by Fakolith, through independent certificating entities such as Tecnalia and the CNTA (Spanish National Food Technology Centre), among others, insofar as there is compliance in all of the tested cases with the overall and specific migration limits imposed by the Regulation for the above-mentioned simulants, which are equivalent to all of the simulants and, as a result are apt for direct contact with all foods and drinks (with the exception of vinegar, which damages epoxy resin. Not suitable for foods intended for infants or young children according definitions at regulation (EU) No. 609/2013.). FK-45 FoodGrade has Declaration of Compliance – Health Register FAKOLITH RGSEAA ES-39.005259/T. Available in transparent and the most standard industrial colours for the food industry and the health sector.

RECOMMENDED USE: FK-45 FoodGrade epoxy paint is specifically formulated for the protection and finishing of surfaces that come into direct contact with all manner of foods and drinks, in line with current European regulations, and is for application to the interiors of food tanks and silos, food transport elements, skirting boards, floors, walls, ceilings, objects, machinery, installations, structures, etc. located in interiors. Generally, for use in the food industry, the health sector, the pharmaceuticals and cosmetics industry, construction and civil engineering.

HOW TO APPLY: Following adequate preparation of the surface and having confirmed the suitability of the environment, FK-45 FoodGrade paint can be applied by brush or roller, or for finishes and optimum applications using AirMix or Airlles with heated hose type spraying equipment. Slowly pour component A into component B (never the other way round), mix together gently using an electric mixer, for at least 2 minutes or until the components have blended completely together, and then leave to rest for 1 minute before starting to apply. When mixing always use complete batches of component A and component B, to avoid errors in the mixing ratio. Plan carefully its application, bearing in mind its short pot-life of the mix. It can be applied over fibreglass netting systems, in tanks and on floors, mixed with non-slip quartz sand. Should it be necessary adjust the viscosity of the paint by thinning with 5-10% of special FoodGrade solvent, FK-45 Solvent OEM FG.

ATTENTION TO THE CONDITIONS OF APPLICATION AND CURING: Drying time and the waiting time for the second coat depend on layer thickness, temperature, relative humidity and ventilation. The environment and base temperature should never be lower than + 10ºC and higher than 35ºC, and the relative humidity should not be higher than 70-75%. The surface temperature of the base to be painted should always be at least 3 ° C above the dew point to avoid condensation. It is estimated that the ideal application temperature is around 20ºC and 60% relative humidity. In the event that environmental conditions are not appropriate for its application and curing, these should be adapted with extraction and ventilation of air, either at room temperature, with cold or heat, with dehumidifiers, etc., until the environmental conditions are adequate and stable during the application and curing, and always avoiding the generation of moisture condensation, since this would prevent the proper curing of the paint, especially made to monitor in tanks and confined spaces. Epoxy paint should not be in contact with water or surface condensation during the first 72 hours of curing, or the paint may not cure properly, appearing "Amine Blush" wash spots.

DEPOSITS OF FOOD LIQUIDS: In general, the film will present its complete curing, from 14 to 28 days for contact with food and drinks (cured at 23ºC, 50% relative humidity, layer> 300 microns dry). At a lower temperature and / or higher humidity and layer, the curing time can be significantly increased. On the other hand, if the temperature conditions are higher, the humidity is lower and / or there is less coating, the curing time can be significantly reduced. It is necessary to maintain suitable environmental conditions during application and curing, for which it is necessary to use ventilation systems with air extraction and forced hot air, preferably dehydrated, avoiding condensation, to maximize the curing conditions. Before filling a tank that has been coated with FK-45 FoodGrade paints range, the complete curing of the film should be checked, as well as at least an initial cleaning on the entire surface, with clear water, or preferably with neutral soap and later rinse.

FORCED DRYING: in general, applications with forced drying with hot air dehydrated can greatly reduce the drying, curing and commissioning time. An example of this can be the application in interior of pipes, where specialist companies after the application with systems and special equipment, artificially circulate a current of hot dehydrated air, and after checking the correct curing, make a later washing with water, before of the definitive commissioning. The contribution of heat at a higher temperature shortens the programming of the curing cycle. For more details, consult technical data sheet and / or application guides, and safety data sheet.

OTHER GENERAL APPLICATIONS: the painting offers good general resistance, at least after 72 hours of curing, although we recommend not exposing the paint film to severe chemical-physical aggressions until it has been cured for at least 1 week (walls, floors, ceilings, indirect contact).

AVERAGE YIELD PAINT: according to recommended coat thickness, depending on use of FK-45 FoodGrade

- Dry thickness 200 µm = wet 302 gr/m² (222 ml/m²) - yield 3,31 m²/kg (4,5 m²/L).
- Dry thickness 300 µm = wet 453 gr/m² (333 ml/m²)- yield of 2,21 m²/kg (3,00 m²/L).
- Dry thickness 350µm = wet 528 gr/m² (389 ml/m²)- yield of 1,90 m²/kg (2,57 m²/L).
- Dry thickness 400 µm = wet 604 gr/m² (444 ml/m²)- yield of 1,66 m²/kg (2,25 m²/L).
- Dry thickness 500 µm = wet 755 gr/m² (555 ml/m²)- yield of 1,32 m²/kg (1,80 m²/L).
- Dry thickness 700µm = wet 1058 gr/m² (778 ml/m²)- yield of 0,95 m²/kg (1,28 m²/L).

AVERAGE YIELD TRANSPARENT VARNISH:

- Dry thickness 50 µm = wet 58 gr/m² (53 ml/m²)- yield of 17,27 m²/kg (18,87 m²/L).
- Dry thickness 75 µm = wet 87 gr/m² (79 ml/m²)- yield of 11,49 m²/kg (12,66 m²/L).
- Dry thickness 100 µm = wet 116 gr/m² (105 ml/m²)- yield of 8,63 m²/kg (9,52 m²/L).

Back to list

Images

Fruits and vegetables packaging



Shelves for bread



Bakery exhibitors



Wooden utensils



Wine barrels and cooperage



Packaging customizacion



Mineral surfaces