Method of checking the gelling process after pouring a reactive

Details Method of checking the gelling process after pouring a reactive Method of checking the gelling process after pouring a reactive

1991-06-10

1993-03-16

Aftergut, Karen

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

73 6441, 264 406, 264310, 2643281, 374 23, 374 25, 374 53, 425143, 425144, B29C 4500, G01N 2502

Patent

active

051941970

ABSTRACT:
In a method of checking the gelling process after pouring a reactive resin system into a production mould, the gelling behavior of a resin system is detected by means of calibration measurements and stored. Temperature patterns of the resin system are detected and, for each temperature pattern, the temperature at which the gelling point lies is determined. A scalar value and the gelling moment temperature are associated with each temperature pattern. On carrying out a checking measurement inside a production mould, the temperature patterns at various sites inside the production mould are detected using a large number of thermocouples. Scalar values are obtained from the temperature patterns and are compared with the scalar values established during the calibration measurement in order to establish gelling moment temperatures. The particular advantage of the method described is that the checking measurement of a production mould requires the use only of thermocouples and not of gelling point probes.

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