Basic System Types
We can probably break systems down into four basic types and each of those types is generally used by certain types of processors.
Processor Business: Extrusion, Pre-forms & Thermo Forming = basic system type: Single Source - Single Destination.
Processor Business: Caps, Containers, Containers & Extrusion= basic system type: Single Source - Multiple Destination.
Processor Business: Extrusion = basic system type: Multiple Source - Single Destination.
Processor Business: Injection Molders, Tubing, Wire & Cable = basic system type: Multiple Source - Multiple Destination.
These aren’t hard and fast rules because there are many crossover situations but typically, the processors in the businesses listed above will employ the resin conveying system type shown opposite their business category.
There are other factors to consider like:
- Does the resin require drying?
- Are the multiple source materials very similar…like PE and PP?
- Is common or dedicated line conveying preferred?
- Dry or ambient air conveying?
- Are material selection manifolds required?
- Is verification and validation of materials a factor?
- Is line purging required?
All of these questions are best discussed with the systems engineer who will help guide you through this maze.
Then, there are other sub-systems, which are usually considered separately but may be integrated into the primary resin conveying system.
System Integration
When you consider a central resin handling system, it’s best to include all parts of the process if possible. Anything you can do to get pallets & forklifts off the production floor results in better workflow, fewer employees and increased profits.
