Treatment element for a treatment element shaft of a screw machine, and method for producing a treatment element

A treatment element for a treatment element shaft of a screw machine, comprising:

• a main body with an outer wall,
• wherein:
• the outer wall has several first wall sections and several second wall sections, wherein the first wall sections are harder than the second wall sections,
• the first wall sections are of strip-like form such that an aspect ratio of each of the first wall sections is at least 5,
• wherein the first wall sections and the second wall sections are oriented parallel to one another and are arranged alternately with respect to one another, and
• the treatment element is one of the following:
• a screw element, wherein a main extent direction of the first wall sections is oriented obliquely with respect to a helical line of the screw element, or
• a kneading element, wherein a main extent direction of the first wall sections is oriented obliquely with respect to an axis of rotation of the treatment element and obliquely with respect to a cross-sectional area of the kneading element.