There are two reasons, the influence of the temperature of a machine, the temperature is too low, the thin consistency of the glue itself increases, and the phenomenon of wire drawing is produced. It is very important to increase the heating temperature of hot melt glue, the curing time of two hot melt glue, and the curing time of hot melt glue to produce wire drawing phenomenon. Generally speaking, the shorter the curing time of hot melt glue, the lower the probability of wire drawing, because the fine wire formed when hot melt glue is emitted from the muzzle, cannot continue to be stretched due to rapid curing, and it is easy to break. Sometimes you can't even see the drawing.