What do you mean by the viscosity of the packing belt?
The viscosity of the packing belt shall mean the degree of adhesion of the belt joint (bond).
Under normal circumstances, in the packing belt joints completely flat welding, adhesive degree can reach the 60%-80% of the packaging belt itself tension.
Pack by perm heating hot melt packing machine and stick together, then the joints are cooled down after the tension can be called adhesion (adhesion).
