Primer application is a challenge in many industries. They\u2019re distinguished between water-based primers and solvent based primers. Axel Wirth Maschinen GmbH offers different solutions for those types of primer.<\/p>\n
1. Water-based primer:<\/strong><\/p>\n Application of the primer, using a dosing roller machine type DWO<\/a>. The primer is being pumped into the rollers and circulates within the machine. When using the machine in hot environments, the viscosity can be measured and automatically adapted. Rubber coated rollers<\/a>, are being used for that, which can be smooth, grooved or porous, depending on the desired application amount. Following that, a infra-red dryer can be patched in. Our machines are currently being used with the following water-based<\/strong> applications in the<\/p>\n 2. Solvent-based Primer:<\/strong><\/p>\n Using solvent based primers will become necessary in different fields. Challenges resulting from that were mastered by us multiple times in the past. Following things need to be considered:<\/p>\n Explosion protection of the plant,<\/strong> or EX-protection of roller coating machines in short. The solvent-based primers usually have an extremely low flashpoint, that makes the usage of EX-protected motors, sensors, circuitry, etc. necessary. We can assure this also in cooperation with specialized audit companies. This of course does have it\u2019s price, but sometimes it\u2019s not possible otherwise.<\/p>\n Die l\u00f6semittelhaltigen Primer haben in der Regel einen extrem niedrigen Flammpunkt, der den Einsatz von EX-gesch\u00fctzten Motoren, Sensoren, Schaltung.... n\u00f6tig macht. Dies k\u00f6nnen wir auch in Zusammenarbeit mit Pr\u00fcfgesellschaften sicherstellen. Das Ganze hat seinen Preis, aber manchmal geht es nicht anders.<\/p>\n Keeping the viscosity stable.<\/strong> As additional point, it needs to be considered, that the solvents volatilize and thus the viscosity will change. That\u2019s why it\u2019s mandatory to monitor the viscosity and to adapt it with the addition of solvent. Otherwise you take the risk of the application amount changing through the change in viscosity.<\/p>\n Solvent-based primers and the rubber coating of rollers<\/a><\/strong>.Depending on the producer of the primer and the type of primer, the mixture of the solvents are a challenge for the rubber mixtures of the roller coaters. We always examine the compatibility of the rubber mixtures and the used primers in advance. Currently we got over 80 different rubber mixtures in use, so mostly a existing rubber can be found for the different types of primer.<\/p>\n Areas of application:<\/strong><\/p>\n To verify if we can offer the right solution for your primer application, a test in our technical center<\/a> is an important step.<\/p>\n\n
\n