Heat Setting Temperature Profiling and Monitoring
topic
Heat setting process monitoring uses calibrated PT100 resistance temperature sensors and thermocouple probes measuring steam chamber and air oven temperatures at multiple positions through the setting zone, with temperature uniformity within plus or minus 2 degrees Celsius across the full chamber width being required for consistent setting across all yarn positions, and periodic validation using temperature data loggers placed in dummy packages run through the setting cycle.
Role
Maintains heat setting process consistency by verifying that the temperature conditions experienced by all yarn positions in the setting equipment are within the specification range that achieves the target degree of molecular relaxation, with temperature non-uniformity being the primary cause of variable twist liveliness across the autoclave load that creates between-package quality variation manifesting as shade variation in subsequently dyed fabrics.
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