Hot-melt pressure-sensitive adhesive (HMPSA) is a specific type of pressure-sensitive adhesive. It is primarily manufactured by blending synthetic rubber, resins, and rubber oils; heating this mixture into a molten state; and then coating it onto various substrates-such as tissue paper, fabric, or plastic film-to create a novel type of adhesive tape. Its greatest advantage lies in its low cost. It is widely used for sealing cartons and boxes, packaging paper products, labeling beverage bottles, sealing aluminum foil, waterproofing membranes, shipping labels, flexible packaging, other general packaging applications, and eco-friendly paper pallets, and is compatible with a diverse range of materials.
Hot-melt pressure-sensitive adhesive represents the third generation of pressure-sensitive adhesive products, following solvent-based and emulsion-based varieties. Compared to its predecessors, the hot-melt type is solvent-free, thereby promoting greater environmental sustainability and workplace safety. Furthermore, it offers high production efficiency and relatively low manufacturing costs; consequently, nations worldwide are currently investing heavily in the development of hot-melt pressure-sensitive adhesives. A prime example is the industry leader, Chengdu Guibao Science & Technology, whose annual adhesive production capacity has reached 370,000 tons, supported by a strategic network of nine major production bases established across the country.
