MEASURING DEVICE OF PHYSICAL PROPERTY OF HIGH MOLECULAR SUBSTANCE WHICH IS BEING PROCESSED

PURPOSE:To prevent generation of a raw material loss and yellowing, by a method wherein about a shell-like core is arranged within a pipe line of a barrel of a head of a processing machine through a spider so as to possess an annular space and a pipe line wall on an upstream side and the pipe line wall of the annular space of the core are provided with a pressure sensor and temperature sensor. CONSTITUTION:About a shell-like core 3 is arranged within a pipe line 2 of a barrel 1 of a head of a processing machine such as an extruding machine or an injection molding machine through a spider 4 so as to possess an annular apace 5. A pipe line 2 wall of an upstream side and the pipe line 2 wall of the annular space 5 of the core 3 are provided respectively with pressure sensors 6a, 6b and a temperature sensor 8. Although high molecular substance 10 is pressed from the tip of the processing machine, that is, the upstream side of the core 3 of the pipe line 2 and moves to a downstream side through the annular space 5, pressure of each point is measured by the pressure sensors 6a, 6b in the meantime. It is unnecessary to provide a measuring pipe line and metering pump separately as usual, therefore, the title device becomes one where parts are few, structure is simple and a cost is low. Such a material loss as to abandon the high molecular substance after measurement as usual is not generated and it becomes difficult to generate yellowing of a material further.