Machine readable plastic preform and injection mould

摘要

The plastic preform (1) comprises a base body (2) having a dome area terminating the base body, a threaded area (4) disposed on the base body and integrally formed with the base body, an annular portion (6), which is arranged below the threaded area and extends outwards in a radial direction of the plastic preform and integrally formed with the base body. The plastic preform includes a marking (10) that is a characteristic property of the plastic preform. The annular portion has a first surface facing the base body and a second surface facing the threaded area. The plastic preform (1) comprises a base body (2) having a dome area terminating the base body, a threaded area (4) disposed on the base body and integrally formed with the base body, an annular portion (6), which is arranged below the threaded area and extends outwards in a radial direction of the plastic preform and integrally formed with the base body. The plastic preform includes a marking (10) that is a characteristic property of the plastic preform. The annular portion has a first surface facing the base body and a second surface facing the threaded area. The marking is: arranged on a predetermined surface section lying below the threaded area of the plastic preform in a longitudinal direction, where the surface section extends in an angle deviating from 0[deg] with respect to the longitudinal direction of the plastic preform; polished; observable by an observation device, which observes the plastic preform in its longitudinal direction; and a recess or elevation formed in the surface section. The annular portion is unpolished in sections. The characteristic property includes geometric data of the plastic preform, a weight of the plastic preform, a material of the plastic preform, a color of the plastic preform, a manufacturing date of the plastic preform, a manufacturer of plastic preform, a raw material of the plastic preform, and/or machine-related information. The marking is arranged in a region to be stretched or not to be stretched of the plastic preform. A portion of the marking serves with respect to its longitudinal axis for detecting a rotational position of the plastic preform. An independent claim is included for an injection mold for producing a plastic preform.