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Digital Dosing Units
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• Recipe parameters are different for Injection Molding, Extrusion-Constant, and
Extrusion-Proportional operation. See each individual section for details.
• The calibration method is the same for all processes.
• Once the unit is online, the user may want to save recipes for later recall (10
maximum).
• This section will show how to calibrate the unit, bring the unit on line, enter a
recipe, and store and recall recipes.
3.3 Injection Molding
During each molding cycle the Digital Dosing unit doses the correct amount of additive evenly
throughout the screw recovery cycle. The Digital Dosing unit determines the correct amount of
additive from the recipe and automatically adjusts the duration and speed of dosing by
measuring the molding machine screw recovery time each cycle.
Recipe Input - Injection Molding
To enter a recipe for injection molding, the following process data is required:
• Percentage of additive
• Total shot weight in grams (includes parts and runner system)
• Screw recovery time of the machine in seconds
• Calibration weight in grams
Step 1:
• Press Input
once.
• The LED symbol flashes.
• “1” will quickly flash on the display, before a number in the format xxx.xx
comes up on the display.