Method and apparatus for testing glassware

Details Method and apparatus for testing glassware Method and apparatus for testing glassware

1986-05-12

1988-03-29

Yasich, Daniel M.

Thermal measuring and testing

Leak or flaw detection

With heating or cooling of specimen for test

73 493, 141 94, 374 57, G01M 2572

Patent

active

047339730

ABSTRACT:
A glass container to be tested for resistance to thermal schock and impact simulation is first filled with hot water to a point of overflowing. The hot water fill is terminated and the excess permitted to run off. Thereafter the bottle is closed and the external surface is sprayed with cold water to induce a thermal stress upon the container. After the cold water spray a low level internal pressure load is applied to the container following the thermal shock load. The application of the internal pressure extends partial fractures resulting in complete breakage of the container or a break resulting in a decrease of pressure in the container, indicating a failure.

REFERENCES:
patent: 2167185 (1939-07-01), Preston
patent: 3365930 (1968-01-01), Arias
patent: 3805593 (1974-04-01), Sandoz et al.
patent: 3911972 (1975-10-01), Hubers et al.
patent: 4109508 (1978-08-01), Fukuyama
patent: 4291573 (1981-09-01), Richter et al.
patent: 4575257 (1986-03-01), Ogura et al.

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