In manufacturing, surface treatment is a process that makes different treatments attach together properly. Whether it’s gluing, painting, printing or sealing, the surfaces being joined need to be prepared. Good surface preparation makes strong bonds, which are important for the final product to work well and last. Without it, paint may peel, glue might not stick and coatings could fail.
What Is a Surface Treatment?
Surface treatment is a way of changing the outer layer of a material to help it connect better with adhesives, coatings, inks or paint. This change happens at the chemical level, and the adhesion works because the top few molecular layers of the surface react with the materials that are being applied. If the surface isn’t treated correctly, it won’t stick as well. Surface treatments are used in lots of different industries, and that includes space exploration.
Common Surface Treatments
There are lots of ways to treat surfaces, like the examples seen at //www.poeton.co.uk/surface-treatments/, and they depend on the material and the job. Plasma, corona and flame treatments are all methods that change the chemical structure of the surface.
Plasma treatment comes in two types: atmospheric and vacuum. Vacuum plasma is done in a sealed chamber and gives more control, and it is used in more detailed jobs like coating eyeglasses. Atmospheric plasma uses surrounding air and is better for fast-moving production lines. Corona treatment uses electricity to change the surface, and a high-voltage spark runs between a metal roller and an electrode. This treats the surface as it moves through. Flame treatment uses a mix of gas and air to make a hot flame. The heat removes dirt, and the flame chemically activates the surface. It works well on hard-to-stick plastics, but it can damage more sensitive materials if not done properly.
Chemical Etching
Chemical etching is another surface treatment that uses chemical baths to clean and activate metal surfaces. It’s used when very precise surface treatment is needed for electronics or medical equipment. If the chemicals are not controlled properly, it can cause issues like contamination or an uneven finish.