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