Knurling machine is a patent equipment to improve adhesive properties between thermal insulating PU adhesive and coating surface of some aluminum profiles ，and increase shearing force of profiles. The equipment uses a mechanical method to make teeth at the notch of aluminum profiles by operating opening teeth knife fast,so that chemicals contact with the aluminum part. A better physical connection is formed.

Voltage:380V,Power:3.5KW, Processing capacity: 5-48m/min(dependent on the gap)