Aiming at the particle?and foaming problems during waterborne intercoat-free coating process,thecauses were analyzed,and the resolution process was introduced.In the design process,the selection shouldnot only meet the performance requirements of the material itself,but also consider the influence of theintermediate material on the pest-seruential process,while referring to the process,the performance of thematerial also nccds rcfcrcncc and vcrification.