Method and equipment for detecting pinholes of hollow filament

Details Method and equipment for detecting pinholes of hollow filament Method and equipment for detecting pinholes of hollow filament

1984-03-08

1987-12-08

Levy, Stewart J.

Measuring and testing

With fluid pressure

Dimension, shape, or size

73160, G01M 300

Patent

active

047111216

ABSTRACT:
An improved method and an equipment for detecting a pinhole in hollow filament, wherein the improvement comprises passing the hollow filament through a liquid maintained at a pressure higher than that of the gas in the interior of said hollow filament to allow the liquid to intrude through the pinhole into the interior of the hollow filament and detecting the intruded liquid.

REFERENCES:
patent: 4357826 (1982-11-01), Tahara et al.

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