Method for making an aerosol housing with threaded neck

Abstract

Process for manufacturing a metal can (1) equipped with a threaded neck on which any type of removable head can be fitted, comprising at least the following steps: a) production of a can with a bottom and a cylindrical or shaped wall b) formation of a neck (4) at the open end of the can c) use of a ring (5) equipped with a spindle hole (52) and a thread (54) over its outer surface (55), and sleeve fitting of the spindle hole (52) in the said ring (5) around the neck (4) formed in the previous step, and characterized in that it also includes the following step: d) plastic expansion of the said neck (4), the diameter of the outer surface (42) of the neck (4) being expanded to exceed the value of the inner diameter of the spindle hole (52) of the ring (5) when at rest.

Dependencies are inferred from the claim text.