Testing of properties in flowable materials

Details Testing of properties in flowable materials Testing of properties in flowable materials

1996-12-18

1998-09-15

Glick, Edward J.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

25033912, G01N 2125, G01N 2135

Patent

active

058083014

ABSTRACT:
Method of testing a property of a flowable substance. In particular this invention relates to the testing of the cross-linkability of an adhesive and is particularly relevant to an in-line process for mounting electronic components upon a printed circuit board. In the process, infrared light is passed through adhesive being fed to a dispensing position. Some of the light is absorbed by chemicals in the adhesive. Unabsorbed light after passing through the adhesive is analyzed and wavelengths of the light relating to cross-linkable materials in adhesive are monitored.

REFERENCES:
patent: 4227083 (1980-10-01), Sherinski
patent: 4649711 (1987-03-01), Sibley et al.
patent: 4717827 (1988-01-01), Harvey
patent: 4888484 (1989-12-01), Harvey

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