What is aluminum foil rewinding and aluminum foil slitting?

What is aluminum foil rewinding? What is the purpose of aluminum foil slitting?

(1) Aluminum foil rewinding

Aluminum foil rewinding(slitting, shearing) refers to dividing the double-rolled double-layer aluminum foil into two or more rolls of single-layer foil, and cutting a single rolled aluminum foil into one or more rolls of aluminum foil.

(2) Purpose of aluminum foil slitting

a. Roll the cut aluminum foil onto the die that suits the user's requirements.

b. Cut into the width and length (diameter) required by the user. In addition to the width of the finished product, the slitting requirements for the incoming material width of the rolling mill should also consider 5-10mm on each side and 2-6mm in the middle.

c. Roll the smooth or dark side of the aluminum foil on the outer surface according to the user's requirements, weld the broken ends firmly and neatly by ultrasonic waves or other methods, and make obvious marks on the end faces. Generally, the aluminum foil with a thickness of more than 0.04mm is not allowed to have joints.

d. Inspect the quality of incoming materials from the rolling mill, such as surface quality, thickness, plate shape, number of pinholes, etc. The defects in incoming materials from the rolling mill should be changed, downgraded or stripped according to their impact on product quality. material method.