① For bonding brittle or rigid materials (such as ceramics, glass, cement, and stone), it is recommended to use thermosetting resin adhesives with high strength, high hardness, and good dimensional stability for on-line coating, such as epoxy resin adhesives, phenolic resin adhesives, and unsaturated resin adhesives.


② For bonding elastic or tough materials (such as rubber, leather, plastics, and films), adhesives with good elasticity and certain toughness should be selected, such as neoprene adhesives, polyurethane adhesives, modified silane adhesives, and rubber-based adhesives.


③ For bonding porous materials (such as foam plastics, sponges, and fabrics), adhesives with higher viscosity are suitable, including epoxy resin adhesives, polyurethane adhesives, modified silane adhesives, hot-melt adhesives, polyvinyl acetate adhesives, and rubber-based adhesives.


④ Select adhesives according to the thermal expansion coefficient of the base material. Generally, the expansion coefficients of most base materials are similar at room temperature, so no detailed consideration is needed. However, when used under high or low temperatures or when the bonding area is too large, it is essential to ensure that the expansion coefficient of the adhesive is close to that of the base material.