<\/span><\/h2>\nPrimeCoat\u00ae A109 is a chrome-free pre-treatment chemical product for coiled metal, developed by AD Coil Coating Technologies BV. The product is used to improve the adhesion of coil coatings and enhance bonding properties on metal surfaces.<\/span><\/p>\nUnlike traditional chromate pretreatment chemicals, PrimeCoat\u00ae A109 contains no form of chromium. Furthermore, it is free of fluoride, formaldehyde, and SVHCs, meeting increasingly stringent environmental and chemical safety requirements in industrial production.<\/span><\/p>\nThe bonding properties of PrimeCoat\u00ae A109 have been evaluated in combination with various coating systems such as single-layer systems, primer\/topcoat systems, and powder coatings, including PVDF, polyester, and polyurethane. After exposure to wet conditions such as humidity testing, boiling water testing, and acid salt spray testing, the product achieved the highest quality performance in all tests.<\/span>![\"PrimeCoat\u00ae](\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2026\/07\/A109-1.png\")
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\n<\/span><\/span>Key advantages of PrimeCoat\u00ae A109<\/span><\/strong><\/span><\/span><\/h2>\n1. Water-based product, does not contain Chrome.<\/span><\/strong><\/span><\/h3>\nPrimeCoat\u00ae A109 is a water-based, chrome-free pretreatment chemical that aligns with the trend toward safer and more sustainable surface treatment technologies.<\/span><\/p>\nThis product can replace traditional non-washing chromate pretreatment systems while still ensuring the necessary corrosion resistance and adhesion to metal surfaces.<\/span><\/p>\n2. Improve paint adhesion<\/span><\/strong><\/span><\/h3>\nOne of the key advantages of PrimeCoat\u00ae A109 pretreatment chemical is its ability to improve adhesion between the metal surface and the coating.<\/span><\/p>\nFor coil-coating systems, PrimeCoat\u00ae A109 helps create a stable base layer, supporting better paint adhesion on aluminum or zinc-coated steel surfaces.<\/span><\/p>\n3. Increase adhesive bonding strength<\/span><\/strong><\/span><\/h3>\nIn addition to improving paint adhesion, PrimeCoat\u00ae A109 pre-treatment chemical also enhances the bonding properties of metal surfaces. This is particularly important in applications requiring high bond strength, such as building materials, color-coated aluminum sheets, color-coated galvanized steel, or components requiring bonding.<\/span><\/p>\n4. Good corrosion resistance<\/span><\/strong><\/span><\/h3>\nWhen used with the appropriate primer and topcoat system, PrimeCoat\u00ae A109 can provide good corrosion resistance, comparable to traditional no-wash chromate pretreatment systems.<\/span><\/p>\nAccording to technical specifications, the product can withstand acid and salt spray tests for\u00a0<\/span>1,000 to 2,000 hours<\/span><\/strong>\u00a0with corrosion levels less than\u00a0<\/span>1 mm<\/span><\/strong>\u00a0, depending on the paint system and application conditions.<\/span><\/p>\n5. The primer can be replaced in some paint systems.<\/span><\/strong><\/span><\/h3>\nPrimeCoat\u00ae A109 offers excellent adhesion and corrosion resistance properties, making it a suitable primer replacement in certain paint systems. This simplifies the process, optimizes costs, and increases production efficiency.<\/span><\/p>\n
\n<\/span><\/span>Which materials are suitable for using PrimeCoat\u00ae A109 pretreatment chemical?<\/span><\/strong><\/span><\/span><\/h2>\nPrimeCoat\u00ae A109 is developed for a wide variety of metal substrates, especially:<\/span><\/p>\n\n- Aluminum<\/span><\/li>\n
- Galvalume\u00ae \/ AZ<\/span><\/li>\n
- Rolled materials in continuous production processes<\/span><\/li>\n<\/ul>\n
Thanks to its versatile applications, PrimeCoat\u00ae A109 is suitable for coil sheet, color-coated aluminum, color-coated galvanized steel, and coil-coating lines requiring high surface stability.<\/span><\/p>\n
\n<\/span><\/span>Applications of PrimeCoat\u00ae A109 in manufacturing<\/span><\/strong><\/span><\/span><\/h2>\nPrimeCoat\u00ae A109 is primarily used in the pre-treatment process before painting or bonding metal surfaces.<\/span><\/p>\nThe product is suitable for the following processes:<\/span><\/p>\n\n- Pre-treatment of aluminum before painting<\/span><\/li>\n
- Pre-treatment of galvanized steel<\/span><\/li>\n
- Pre-treatment of zinc-aluminum-magnesium alloy coated steel<\/span><\/li>\n
- Continuous coil-coating process<\/span><\/li>\n
- Single-coat coating system for aluminum<\/span><\/li>\n
- Primer\/Topcoat System<\/span><\/li>\n
- Powder coating<\/span><\/li>\n
- Applications requiring high adhesion and corrosion resistance.<\/span><\/li>\n<\/ul>\n
The PrimeCoat\u00ae A109 pre-treatment chemical has been evaluated against various coating systems such as PVDF, polyester, and polyurethane after exposure to wet conditions, moisture testing, boiling water immersion, and acid salt spray testing.<\/span><\/p>\n
\n<\/span><\/span>Instructions for using PrimeCoat\u00ae A109<\/span><\/strong><\/span><\/span><\/h2>\nStep 1. Prepare the surface.<\/span><\/strong><\/span><\/h3>\nPrimeCoat\u00ae A109 pretreatment chemical should be applied to a clean, dry metal surface. If the metal substrate is oily, the surface should be cleaned beforehand with a suitable alkaline detergent.<\/span><\/p>\nProper surface cleaning ensures even distribution of the pre-treatment layer, thereby improving adhesion and corrosion resistance.<\/span><\/p>\nStep 2. Dilute the product.<\/span><\/strong><\/span><\/h3>\nThe PrimeCoat\u00ae A109 pretreatment chemical needs to be diluted with demineralized water. Using demineralized water helps to limit impurities that affect the quality of the coating and the stability of the treatment solution.<\/span><\/p>\nStep 3. Coating method<\/span><\/strong><\/span><\/h3>\nIn continuous metal strip processing, the preferred method is\u00a0<\/span>chem-coater roll-coat<\/span><\/strong>\u00a0. Alternatively, jet or spray-press methods can also be used to create a wet film of precise thickness.<\/span><\/p>\nThe wet film thickness typically ranges from\u00a0<\/span>1\u20134 microns<\/span><\/strong>\u00a0, depending on technical requirements and production line conditions.<\/span><\/p>\nStep 4. Drying process<\/span><\/strong><\/span><\/h3>\nThe drying process is considered satisfactory when the water evaporates quickly and the coating reaches a\u00a0<\/span>touch-dry<\/span><\/strong>\u00a0state immediately after passing through the drying area or oven.<\/span><\/p>\nWith a wet film thickness of 1\u20134 microns, the peak metal temperature needs to reach a minimum\u00a0<\/span>of 40\u00b0C<\/span><\/strong>\u00a0for rapid water evaporation and stable coating formation.<\/span><\/p>\nAfter drying, PrimeCoat\u00ae A109\u00a0<\/span>should not be washed or cooled with water<\/span><\/strong>\u00a0.<\/span><\/p>\n
\nPrimeCoat\u00ae A109 coating volume<\/span><\/strong><\/span><\/h3>\nAfter drying, the PrimeCoat\u00ae A109 coating contains phosphorus. The phosphorus content can be measured using a suitable XRF analyzer.<\/span><\/p>\nThe measured phosphorus content correlates with the total coating weight. The target coating weight for PrimeCoat\u00ae A109 is:\u00a0<\/span>3\u20139 mg P\/m\u00b2<\/span><\/strong><\/p>\nWhen controlling coatings using XRF, it is essential to ensure that the equipment is properly calibrated for the type of metal substrate being processed in the line.<\/span><\/p>\n
\nAppearance and preservation<\/span><\/strong><\/span><\/h3>\nPrimeCoat\u00ae A109 pretreatment chemical is a clear, colorless liquid.<\/span><\/p>\nMetals treated with PrimeCoat\u00ae A109 must be stored and transported in dry conditions or packaged appropriately. Storage and transport conditions should follow the metal supplier’s procedures to ensure the quality of the treated surface.<\/span><\/p>\n
\n<\/span><\/span>Why should you use the non-chrome PrimeCoat\u00ae A109 pretreatment chemical?<\/span><\/strong><\/span><\/span><\/h2>\nIn the metal surface treatment industry, environmental, safety, and performance requirements are becoming increasingly stringent. The transition from traditional chromate pretreatment systems to chromium-free technology is an inevitable trend for many manufacturers of aluminum, galvanized steel, and color-coated steel.<\/span><\/p>\nPrimeCoat\u00ae A109 pretreatment chemical offers numerous benefits for businesses:<\/span><\/p>\n\n- Reduce reliance on traditional chromate technology.<\/span><\/li>\n
- Improves paint adhesion and glue bonding.<\/span><\/li>\n
- Increases corrosion resistance for metal surfaces.<\/span><\/li>\n
- Suitable for continuous production lines<\/span><\/li>\n
- Support in meeting environmental requirements and international standards.<\/span><\/li>\n
- Suitable for application on aluminum, Galvalume\u00ae, and zinc alloy coated steel.<\/span><\/li>\n<\/ul>\n
With its ability to be combined with a variety of coating systems such as PVDF, polyester, polyurethane, and powder coatings, PrimeCoat\u00ae A109 is a versatile pre-treatment solution for manufacturers of painted metal materials.<\/span><\/p>\n
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