Hot melt adhesive has been widely used in various fields due to its convenience, speed, and environmental friendliness. In the packaging industry, hot melt adhesive is used for sticking packaging materials such as paper boxes, cartons, and plastic bags; In the footwear industry, hot melt adhesive is used for bonding components such as shoe uppers and soles; In the electronics industry, hot melt adhesive is used for fixing circuit boards, electronic components, etc; In addition, hot melt adhesive also plays an important role in handicraft production, toy production, book binding and other fields.