界面剂可以改善光滑基层的附着力，也适用于墙布和壁纸的粘接。由于涂抹方便，胶膜薄，初粘性适宜，特别适宜墙布和壁纸的粘接平整，不易产生死褶和鼓包。也可用于基面“造毛”。界面剂起到的作用就是承上启下，巩固住基底并且允许其他物质覆盖在其上。
The interfacial agent can improve the adhesion of the smooth base, and it is also suitable for the adhesion of wall cloth and wallpaper. Because of easy application, thin adhesive film and suitable initial adhesion, it is especially suitable for the smooth adhesion of wall cloth and wallpaper, and it is not easy to produce dead pleats and bulges. It can also be used to "make hair" on the base surface. The interface agent serves as a link between the preceding and the following, consolidating the substrate and allowing other substances to cover it.