Sterlco SF Series Volumetric Additive Feeder - Manual (Page 11)

Additive Feeders Chapter 2: Functional Description 11 of 55
Chapter 2: Functional Description
2-1 Models Covered in This Manual
This manual provides operation, installation, and maintenance instructions for 1 and 2
component additive feeders. Model numbers are listed on the serial tag. Make sure you know
the model and serial number of your equipment before contacting the manufacturer for parts
or service.
Our additive feeders are designed to precisely feed up to two components before being used
in the injection molding, blow molding or extrusion processes. Additive Feeders are
configured to meet the specific requirements stated by the Customer at the time of purchase.
2-2 General Description
Our additive feeder is a highly accurate unit designed to feed one or two additives into a
stream of virgin plastic pellets prior to injection molding, blow molding, or extrusion. Such
additives may include color, regrind, or other free-flowing pelletized or granular materials.
The additive feeder may also be appropriate for other applications. Consult the manufacturer
for additional information.
2-3 Standard Features
Mechanical Features
Transport Tube
• Stainless steel augers available in ½”, ¾”, 1”, 1-1/4” and 1-1/2” sizes
• Augers/insert assemblies are interchangeable without tools
• UHMW polyethylene auger insert is durable and easily cleaned
• Calibration hatch opens without tools
• Cleanout hatch below the flood zone opens without tools and allows the supply hopper
to dump completely.
• Lightweight aluminum casting
Main Throat
• Low profile design adds only 6 inches to supply system headroom requirements
• Accommodates one or two additive feeders
• Sturdy steel construction with sight glasses to visually confirm proper operation
Supply Hopper
• 1 or 2 cubic-foot capacity
• Design based on dynamic/static material flow characteristics
• Angled hopper geometry allows use with 60º machine supply hoppers
• Easy, fast, and complete cleanout
• Sight glasses give visual level indication
• Manual fill cover standard