--- title: "Coating Technology & Processes | Grünig-SignTronic AG" description: "Coating systems for screen production: direct emulsion, capillary film and pre-coated PCF mesh – with automated, reproducible coating processes." image: https://www.grunig-signtronic.com/images/og-image.jpg --- > Documentation Index > Fetch the complete site index at: https://www.grunig-signtronic.com/llms.txt > Use this file to discover all available pages before exploring further. # Automated coating Perfect layer build-up at the push of a button Automation of the coating process enables controlled application of emulsions onto screen meshes. Precise parameter control ensures defined Rz values and consistent layer thicknesses. This forms the technical foundation for reproducibility in exposure and the subsequent printing process. Full-surface uniformity Minimize tolerances through synchronized, double-sided coating. Our technology ensures a level of surface consistency that manual processes simply cannot achieve. Intelligent process integration Integrate coating seamlessly into your workflow. From stand-alone solutions to fully automated magazine operation – we scale with your production. Efficient material usage Precise coating edges and optimized trough profiles significantly reduce emulsion consumption and lower your cost per screen. ## Secure the foundation for sharp print results The screen defines resolution Uneven coating cannot be compensated by any printing machine setting. Control over layer thickness and surface roughness is the only guarantee for consistent ink volume and precise edge definition. ### Layer thickness (EOM) Precisely controlled coating ensures consistent and reproducible ink volume. ### Surface quality (Rz) Minimal roughness depth ensures optimal sealing on the substrate and prevents light undercutting. ### Process stability Automated application eliminates human error and reduces emulsion consumption. Fundamentals ## Process reliability as the key quality factor 1\. Process configuration Definition of coating parameters based on mesh specification and required ink deposit (EOM). 2\. System alignment Selection of the appropriate coating solution based on frame geometry, throughput and available space. 3\. Controlled application Automated, synchronized double-sided coating to eliminate manual tolerances and ensure sharp edges. 4\. Finalization & verification Horizontal drying stabilizes the emulsion, followed by verification of layer thickness and surface roughness (Rz). Portfolio ## Coating systems at a glance From compact stand-alone units to fully automated IN-LINE systems for all frame formats [](/en/products/accessories/g-401) ### G-COAT 401 – Coating trough Patented trough with interchangeable radii for maximum coating quality and process reliability. [View product](/en/products/accessories/g-401) [](/en/products/coating/g-404) ### G-COAT 404 – PLUG & COAT Compact entry-level model with automated workflow and reproducible coating results. [View product](/en/products/coating/g-404) [](/en/products/coating/g-406) ### G-COAT 406 – Compact & flexible Tabletop unit for single- or double-sided coating with high precision and flexible application. [View product](/en/products/coating/g-406) [](/en/products/coating/g-414) ### G-COAT 414 – Double-sided coating Individually controlled system with touchscreen and freely programmable coating processes. [View product](/en/products/coating/g-414) [](/en/products/coating/g-415) ### G-COAT 415 – MODULAR / IN-LINE Automated coating system with maximum flexibility and expandability up to full IN-LINE integration. [View product](/en/products/coating/g-415) [](/en/products/coating/g-421) ### G-COAT 421 – Large-format specialist High-end coating system for large frame formats with automated processes and maximum precision. [View product](/en/products/coating/g-421) Consulting & Contact ## Custom system configuration We find the optimal solution for your process. Let us define the ideal G-COAT configuration for your requirements. Our experts support you in selection and integration. 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