The petroleum resin is a thermoplastic resin produced by a process of pretreatment, polymerization, flash evaporation, etc., which is a raw material having a molecular weight of 300 to 3000. Petroleum resin has insoluble properties in water, is easily soluble in organic solvents, and is resistant to acids, alkalis, water, chemicals and aging.
C5 petroleum resin has low production cost and large application, and can be made into a block shape or a granular shape, and is used as a tackifier in a pressure sensitive adhesive. Hot melt adhesive is a kind of adhesive which is heated and melted to produce fluidity, coated on the bonded object, and solidified after cooling. It is an industrial adhesive and has a wide range of applications, including paper box seals for food, beverage and beer. Box; wood furniture; wireless binding of books; labels, tape; cigarette filter rods; clothing, adhesive lining, and cable, car, refrigerator, footwear, etc.
Hot melt adhesives must be formulated with a tackifier to adhere firmly. In the past, most of the tackifiers used natural resins such as rosin resins or terpene resins, but the price was high and the source was unstable. In recent years, the use of petroleum resins as tackifiers has gradually dominated.