Importance

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Abstract

A knife is arranged for being fitted in a cutting apparatus for obtaining incision lines and notches on a cap made of plastics intended for closing a container and is suitable for making notches and incisions on a side wall of the cap when the cap, by rotating around its own rotation axis, is moved along a path for interacting with the knife in an advancement direction; the knife includes an arrangement of cutting edges that project from a peripheral region of the knife, the arrangement of cutting edges including:

an opening formation part that extends parallel to a horizontal plane orthogonal to the rotation axis, the at least one opening formation part being arranged for making at least one circumferential notch on the side wall at a first height on a vertical axis that is substantially parallel to the rotation axis to define a tamper-evident ring and a main body in the cap;at least one connection formation part that occupies a region extending between the first quote and a second height that is greater than the first height on the vertical axis, the connection formation part being arranged for making at least one notch on the side wall to determine at least one connection portion connecting the tamper-evident ring and the main body;wherein the knife consists of a single piece, the arrangement of cutting edges being obtained in the single piece.

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First Claim