Vol 17 #1, Feb. 1990 - Hoppers
Extruders occasionally run out of material from problems with materials feeders, or just plain operator carelessness.
Simple solution: Make the hopper larger; sheet metal is inexpensive. The larger material inventory will allow more time to recover from problems. Be sure to install a low level alarm.
See also
Decreased motor amps
For safety's sake 1
For safety's sake 2
Hopper segregation
Material cleanout