Use this Primer Intelligence article as a guide for choosing and using the correct plumbing system and materials that will work in concert with the chemistry of the primer to help prevent quality issues and other contaminations that may cause adhesion issues or delays in production.
This Primer Intelligence contains information about how to prevent primer discoloration.
This is a quick guide on how to properly dispense Mica product from IBC totes.
Click above to find out which container option is ideal for your application needs.
Water-based MICA primers are formulated to adhere to polymeric films, paper, and foil. However, many of the primers are also prone to bonding with chrome and ceramic applicator cylinders, metal machine parts and other equipment when dried. The recommendations in this document are the culmination of more than 40 years of priming and clean up experience.
Don't over-apply. Don't under-
Many flexible plastics converters extrude low-density polyethylene ("LDPE") on a daily basis. This resin is easy to process and meets the customers' requirements for adhesion, cohesion, and chemical resistance.
Mica extrusion coating primers have been developed for single-pass processes. The best performance will always be achieved when the primer is applied immediately prior to extrusion coating.
Sometimes, however, there is a need to perform a multiple-pass process, where a substrate is primed, dried, rewound and stored for later use.
Do we have to prime if we treat? Do we have to treat if we prime? The answer is YES to both
The function of a chemical primer is to enhance adhesion and contribute product resistance to a converted structure.
In our last issue of Primer Intelligence, we described the heroic effects of flame and corona discharge treatment. Now it is time to back-peddle a little and warn of the risks inherent in too much of a good thing.
Primer application is not limited to gravure systems. Many converters have found smooth roll applicators well suited to apply MICA
Adequate oxidation of an extrusion coating resin in the air gap is critical for adhesion to the primer.