Patent ID: 6192569
Filing Date: 2001-02-27
Classification: B29C,B29L,B65D,Y02W,Y10T

Abstract:
A method for manufacturing a top for closing a container, comprising steps of:forming a plastic top member with an open end configured to connect to an opening in said container, said plastic top member having,a neck having a ring-shaped inner rim that defines an outlet opening,a tearable ring-shaped part,a cover connected to said ring-shaped inner rim by said tearable ring-shaped part so as to provide an impervious stopper for said container prior to a user tearing open said tearable ring-shape d part when opening said container for a first time, said cover having a same axis of symmetry as said outlet opening, and having,a circular plate extending perpendicularly from said axis of symmetry, andat least three lugs projecting radially from a periphery of said circular plate;forming a skirt with a common axis of symmetry as said axis of symmetry of said cover, said skirt having,an open end, wherein an inner surface of said open end is at least partially cylindrical and follows a same shape as said periphery of said circular plate, except for at least three cavities formed in said inner surface that are positioned to receive said at least three lugs of said periphery of said cover; andpassing said skirt along a direction of said axis of symmetry over said cover such that said at least three cavities of said skirt receive said at least three lugs of said cover and said skirt becomes immobilized with respect to said plastic top member and said skirt closely encircles an outer surface of said neck so as to protect said neck from contaminants.