Method for detecting thermodynamic phase transitions during poly

Details Method for detecting thermodynamic phase transitions during poly Method for detecting thermodynamic phase transitions during poly

1993-01-06

1995-01-24

Vargot, Mathieu D.

Plastic and nonmetallic article shaping or treating: processes

Shaping or treating luminescent material

2504591, 264 22, 264 402, 26432818, B29C 4576

Patent

active

053840798

ABSTRACT:
A method is provided for measuring the onset of polymer solidification, i phase transitions from liquid to crystal or liquid to glass, during injection molding to detect characteristic fluorescence radiation from a dye which has been doped into the polymer at very low concentration. The method involves the use of a calibration relationship between the fluorescence intensity and temperature of the doped polymer in order to determine distinct features which characterize the onset of solidification.

REFERENCES:
patent: 3659974 (1972-05-01), Neugroschl
patent: 4529306 (1985-07-01), Kilham et al.
patent: 4651011 (1987-03-01), Ors et al.
patent: 4672218 (1987-07-01), Chrisman et al.
patent: 4798954 (1989-01-01), Stevenson
patent: 4827121 (1989-05-01), Vidrine, Jr. et al.
patent: 4904080 (1990-02-01), Afromowitz
patent: 5009102 (1991-04-01), Afromowitz
patent: 5037763 (1991-08-01), Petisce
patent: 5063297 (1991-11-01), Hardenbrook et al.

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