Measurement of hot container wall thickness

摘要

A method and apparatus of measuring wall thickness of hollow glass articles (12), such as molded glass containers having interior and exterior wall surfaces, includes the steps of measuring intensity of radiation emitted by the article at a wavelength (at 24) at which intensity varies as a function of temperature at the surface substantially independent of wall thickness between the surfaces. Wall thickness between the surfaces can be determined (at 26) as a combined function of an average wall thickness and intensity measurements.