PUR hot melt adhesive, namely polyurethane hot melt adhesive, its scientific name is moisture curing reactive polyurethane hot melt adhesive. As a one component, organic solvent free hot melt adhesive, PUR's mechanism of action is that the isocyanate (- NCO) group in polyurethane reacts with water in the air or active hydrogen groups such as hydroxyl groups on the surface of the substrate, curing and crosslinking to form a stable chemical structure.

Different from traditional hot-melt adhesives, it contains active chemical functional groups, so when it melts, it will bridge with water vapor or active hydrogen groups to form an irreversible substance, that is, it cannot be melted again, so it is more stable and safe, and has many advantages such as high temperature, low temperature, water resistance, good sealing, high aesthetics, and good environmental protection.

Now, the PUR process has covered the customized household production and processing processes such as furniture edge banding, wrapping, flat pasting, assembly thickening, etc. The PUR process has also been used by more and more people, and has become the general trend of the household industry.