Gasketing (FIPFG) | Sonderhoff
Chemical or physical foaming. The chemical reaction of components A (polyol) and B (isocyanate) with water produces CO2, which acts as a blowing agent and foams the material. A mixed-cell soft foam seal is formed. During physical foaming, under direct air supply into the dosing head mixing chamber, a closed-cell polyurethane foam seal is formed.
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