SENSOR FOR MONITORING HIGH POLYMER MATERIAL INJECTION MOLDING PROCESS

摘要

A sensor used for monitoring a high polymer material injection molding process by means of ultrasonic wave comprises a metal plate (1), a polyimide pressing plate (2), two fastening screws (3, 7), a piezoelectric film (4), an electrode (5) polarized by the piezoelectric film electrode, an electrode wire (6), and a ground line (8). The sensor can be manufactured as required to be small sized and with varied shapes, but is also characterized by high-temperature resistance; and can be used for ultrasonic detection in the high polymer material injection molding process.