Manufacturing PU Foam
The Polyurethane Foam Association (PFA.org) identifies polyurethane foam as “the reaction of two key chemicals, a polyol and an isocyanate with water.”
These two compounds are combined with the other key ingredients and mixed together with the assistance of a blowing agent.
The foaming begins instantly with the expanding formation of a bubbly froth.
The froth hardens; resulting is a slabstock bun of polyurethane foam ready for fabrication.
This all happens in a matter of minutes and is similar to bread rising.
It is during this manufacturing process that flame retardant additives can be introduced to meet various fire code standards, as well as anti-microbial, anti-static, conductive and electrostatic dissipation (ESD) additives.