Express logistics pressure sensitive adhesive

In the current rapid development of the social environment, logistics transportation, express and other industries inevitably use PE based materials of ordinary express bags and anti-counterfeiting express bags, at the same time, the application of environmental protection hot melt pressure sensitive adhesive in the express bag adhesion just greatly improve the production efficiency of this kind of industry.

The traditional hot-melt pressure-sensitive adhesive for express bags is mainly made by using SBC system, SBS or SIS rubber as the base material, and adding a certain proportion of naphthenic oil, viscosifying resin and antioxidant. On the basis of this technology, there are also public reports that emphasize the use of dissolved polystyrene butadiene rubber SSBR and liquid rubber to improve the SBC system, such as the Chinese patent CN 108410402 A; Or emphasizing the characteristics of low temperature lamination and high viscosity and using star SIS and polybutadiene to improve the SBC system, as shown in Chinese patent CN 106398606 A.

These traditional SBC system or improved SBC system of hot-melt pressure-sensitive adhesive in the use of ordinary express bags and anti-counterfeiting express bags, there is an inevitable problem: with the change of temperature after the express bag adhesion, hot-melt pressure-sensitive adhesive appears creep, which wrinkles the adhesive of the express bag, seriously affecting the appearance. This is acceptable in the ordinary express bag bonding, but it is unacceptable in the anti-counterfeiting express bag bonding.

Therefore, it is necessary to invent a kind of hot melt pressure sensitive adhesive with low creep and high viscosity to make up for the deficiency of the above two types of hot melt pressure sensitive adhesive, which is also a more perfect adhesive solution that the current consumption upgrade forces logistics, transportation and express industry to provide. The invention provides the following technical scheme: A hot melt pressure-sensitive adhesive for express logistics with low creep and high viscosity, the components include metallocene olefin polymers (25%-35%) by mass percentage, rubber-reinforced chain polymers (15%-25%), viscose resins (26%-35%), low molecular polyisobutene (8%-15%), naphthenic oil (5%-20%), and antioxidants (0.5-1.5%).