Method of detecting pinholes in hollow fibers

Details Method of detecting pinholes in hollow fibers Method of detecting pinholes in hollow fibers

1980-06-25

1982-11-09

Howell, Kyle L.

Measuring and testing

With fluid pressure

Dimension, shape, or size

73160, 356237, G01N 2189, G01M 338

Patent

active

043578268

ABSTRACT:
A method of and a system for detecting pinholes in hollow fibers by passing a liquid filled fiber into a zone of pressurized gas wherein the pressure of a gas is higher than that of a liquid inside the hollow fiber so that bubbles may be injected through pinholes contained in said hollow fiber and then passing the fiber through a bubble detector. The system can be operated continuously with the pinhole detector being between a device for continuously feeding the hollow fiber and a device for winding up said hollow fiber.

REFERENCES:
patent: 3240945 (1966-03-01), Dixon
patent: 4021217 (1977-05-01), Bondybey et al.

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