Available from Linde LLC
In the production of polymer foams, liquid carbon dioxide is used as a blowing agent instead of environmentally hazardous substances. Carbon dioxide is a physical blowing agent with properties desired for ideal foaming, while simultaneously fulfilling many requirements related to quality, efficiency and ecology.
The technology uses far less blowing agent than existing alternatives and the product retains its properties for a longer period. Successful use of CO2 blowing agent technology in manufacturing of polymer foams depends on several key parameters, of which the most important is to supply CO2 to the process in liquid form and at a desired pressure. At the same time, the fluctuation in carbon dioxide flow should be minimized.