초록 ▼

The invention includes apparatus and method for detecting defects in various barrier materials including surgical gloves and food packaging. Voltage is applied across electrodes and a barrier material and the voltage measured and compared with voltage control measurements for the same barrier materi

The invention includes apparatus and method for detecting defects in various barrier materials including surgical gloves and food packaging. Voltage is applied across electrodes and a barrier material and the voltage measured and compared with voltage control measurements for the same barrier material without a defect. Sensitivity of measurements is increased by adjusting partial pressure across the barrier material which is subjected to the passage of an ionized gas detected by suitable instrumentation.

대표청구항 ▼

[We claim:] [1.](a) a barrier formed from a barrier material subjected to voltage from a voltage source across a first electrode and a second electrode;(b) an ionizer;(c) a gas inlet for introducing a gas to be ionized;(d) a vacuum source for drawing a gas to be ionized through an ionizer and throug

[We claim:] [1.](a) a barrier formed from a barrier material subjected to voltage from a voltage source across a first electrode and a second electrode;(b) an ionizer;(c) a gas inlet for introducing a gas to be ionized;(d) a vacuum source for drawing a gas to be ionized through an ionizer and through the barrier;(e) a controller for controlling a pressure differential across the barrier; and(f) a determination source for comparing electrical output for background permeation of ionized gas through the barrier material when the barrier material is free of defects with the output of ionized gas through the barrier.