aluminum plain sheets for pp caps

Introduction of aluminum plain sheets for pp caps
The aluminum plain sheets for pp caps -generally adopts alloy 8011, 827B (Alcan alloy), 3003.3203, 3005, 3105, etc., which have good deep drawing formability and cannot be strengthened by heat treatment, and some use heat treatment to strengthen and corrosion resistant 6070 alloy D1]
 
The typical production process of aluminum plain sheets for pp caps is:
Melting and casting → homogenization of ingot milling surface + hot rolling → cold rolling + intermediate annealing, one sheet of force straightening, ten surface degreasing, slitting + inspection → packaging.
 
Mechanical properties of aluminum plain sheets for pp caps
The level of tensile strength affects the opening performance of the cover. There are two main forces when opening the cap: one is the starting torque, which is the force required for the cap to start rotating; the other is the twisting torque, which is the force required to twist off the anti-theft ring from the cap. Different types of lid gaskets have different frictional forces on the bottle mouth and different twisting moments. The GB/T14803-93 (Twist-off aluminum anti-theft caps for packaging containers) stipulates the torsion moments of different lid gaskets.