Hot melt adhesive is a plastic adhesive that changes its physical state with temperature within a certain temperature range, while its chemical properties remain unchanged. It is non-toxic and odorless, and is an environmentally friendly chemical product. Due to its solid nature, the product is easy to package, transport, store, solvent-free, pollution-free, non-toxic, and has the advantages of simple production process, high added value, high adhesive strength, and fast speed, making it highly favored.