5. If a batch refuses to mix at any

5. If a batch refuses to mix at any time during mixing cycle, usually indicated by temperature failing to rise, the batch may be forced to mix by seeding or adding approximately 25 lbs of hot mixed stock. When none of the same stock is available, add 25 lbs of polymer as called for in formula for stock and segregate such batches with a suspicious stock tag. 6. In particular no clay like materials (clay,Talc,Mica etc.) is to be added to the Banbury, dump sinks extruder or mills to prevent sticking of the stocks. Except when a batch fails to mix, no material is to be added to the Banbury unless called for on the formula card. When this rule is violated, batches are to be sent to suspicious stock for disposition. 7. Thermocouple correlation - During each shift of operation, the operating thermocouple and the safety thermocouple must be checked for correlation. If they are more than 15 degrees F (8.3 degrees C) apart, the thermocouples must be checked and corrective action (replace if necessary). Cleaning may eliminate the problem if a build-up exists.