Systems and methods for controlling the operation of a blow molder are disclosed. An indication of a crystallinity of at least one container produced by the blow molder may be received along with a material distribution of the at least one container. A model may be executed, where the model relates a plurality of blow molder input parameters to the indication of crystallinity and the material distribution and where a result of the model comprises changes to at least one of the plurality of blow molder input parameters to move the material distribution towards a baseline material distribution and the crystallinity towards a baseline crystallinity. The changes to the at least one of the plurality of blow molder input parameters may be implemented.

An apparatus for treating plastics material preforms has a transport device which transports the plastics material preforms along a predetermined transport path, at least one heating unit to heat the transported plastics material preforms, and a forming device arranged downstream of the heating device for forming the heated plastics material preforms into plastics material containers. The apparatus has at least one temperature detection device for detecting to detect a temperature of the plastics material preforms heated by the heating device, in a spatially resolved manner at least in a longitudinal direction of the plastics material preforms, and an image recording device to record a spatially resolved image of the plastics material preforms, wherein the image recording device is configurable taking into account at least one parameter characteristic of the plastics material preforms to be inspected.