Continuous Coagulation Line Speed and Productivity
topic
PU wet coagulation line productivity is limited by the coagulation bath dwell time required for complete PU precipitation that prevents under-coagulated coating that would collapse during washing, with bath length of 5 to 20 metres and line speed of 5 to 20 metres per minute providing 1 to 4 minutes coagulation time, requiring capital investment in longer bath systems to achieve higher production speeds while maintaining the coagulation quality required for breathable coating performance.
Role
Determines the production economics of wet coagulation coating through the fundamental tradeoff between bath length investment and production speed that is constrained by the coagulation dwell time required for complete PU precipitation, with wet coagulation lines being significantly less productive than dry coating processes and requiring larger capital investment per unit production capacity that must be justified by the premium product value of breathable PU coated fabrics.